fetch config once

remove unused error
skip flakey test
2026-03-26 10:26:30 +00:00 · 2023-04-30 09:19:39 -07:00 · 2023-04-30 09:07:15 -07:00 · 2023-04-30 09:03:32 -07:00 · 2023-04-30 08:23:30 -07:00 · 2023-04-29 08:38:27 -07:00
31 changed files with 178 additions and 2120 deletions
--- a/CONFIG.md
+++ b/CONFIG.md
@@ -188,22 +188,6 @@ default: "admin_pass"
 Password to access the virtual administrative database
 ### dns_cache_enabled
 ```
 path: general.dns_cache_enabled
 default: false
 ```
 When enabled, ip resolutions for server connections specified using hostnames will be cached
 and checked for changes every `dns_max_ttl` seconds. If a change in the host resolution is found
 old ip connections are closed (gracefully) and new connections will start using new ip.
 ### dns_max_ttl
 ```
 path: general.dns_max_ttl
 default: 30
 ```
 Specifies how often (in seconds) cached ip addresses for servers are rechecked (see `dns_cache_enabled`).
 ## `pools.<pool_name>` Section
 ### pool_mode
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -26,27 +26,6 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bddcadddf5e9015d310179a59bb28c4d4b9920ad0f11e8e14dbadf654890c9a6"
 [[package]]
 name = "async-stream"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dad5c83079eae9969be7fadefe640a1c566901f05ff91ab221de4b6f68d9507e"
 dependencies = [
 "async-stream-impl",
 "futures-core",
 ]
 [[package]]
 name = "async-stream-impl"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10f203db73a71dfa2fb6dd22763990fa26f3d2625a6da2da900d23b87d26be27"
 dependencies = [
 "proc-macro2",
 "quote",
 "syn 1.0.109",
 ]
 [[package]]
 name = "async-trait"
 version = "0.1.68"
@@ -233,12 +212,6 @@ dependencies = [
 "syn 1.0.109",
 ]
 [[package]]
 name = "data-encoding"
 version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3ee2393c4a91429dffb4bedf19f4d6abf27d8a732c8ce4980305d782e5426d57"
 [[package]]
 name = "digest"
 version = "0.10.6"
@@ -250,24 +223,6 @@ dependencies = [
 "subtle",
 ]
 [[package]]
 name = "either"
 version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
 [[package]]
 name = "enum-as-inner"
 version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c9720bba047d567ffc8a3cba48bf19126600e249ab7f128e9233e6376976a116"
 dependencies = [
 "heck",
 "proc-macro2",
 "quote",
 "syn 1.0.109",
 ]
 [[package]]
 name = "env_logger"
 version = "0.10.0"
@@ -320,15 +275,6 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 [[package]]
 name = "form_urlencoded"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a9c384f161156f5260c24a097c56119f9be8c798586aecc13afbcbe7b7e26bf8"
 dependencies = [
 "percent-encoding",
 ]
 [[package]]
 name = "futures"
 version = "0.3.28"
@@ -464,12 +410,6 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 [[package]]
 name = "heck"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
 [[package]]
 name = "hermit-abi"
 version = "0.2.6"
@@ -494,17 +434,6 @@ dependencies = [
 "digest",
 ]
 [[package]]
 name = "hostname"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c731c3e10504cc8ed35cfe2f1db4c9274c3d35fa486e3b31df46f068ef3e867"
 dependencies = [
 "libc",
 "match_cfg",
 "winapi",
 ]
 [[package]]
 name = "http"
 version = "0.2.9"
@@ -562,7 +491,7 @@ dependencies = [
 "httpdate",
 "itoa",
 "pin-project-lite",
- "socket2 0.4.9",
+ "socket2",
 "tokio",
 "tower-service",
 "tracing",
@@ -593,27 +522,6 @@ dependencies = [
 "cxx-build",
 ]
 [[package]]
 name = "idna"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "418a0a6fab821475f634efe3ccc45c013f742efe03d853e8d3355d5cb850ecf8"
 dependencies = [
 "matches",
 "unicode-bidi",
 "unicode-normalization",
 ]
 [[package]]
 name = "idna"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e14ddfc70884202db2244c223200c204c2bda1bc6e0998d11b5e024d657209e6"
 dependencies = [
 "unicode-bidi",
 "unicode-normalization",
 ]
 [[package]]
 name = "indexmap"
 version = "1.9.2"
@@ -631,27 +539,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1abeb7a0dd0f8181267ff8adc397075586500b81b28a73e8a0208b00fc170fb3"
 dependencies = [
 "libc",
- "windows-sys 0.45.0",
+ "windows-sys",
 ]
 [[package]]
 name = "ipconfig"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd302af1b90f2463a98fa5ad469fc212c8e3175a41c3068601bfa2727591c5be"
 dependencies = [
 "socket2 0.4.9",
 "widestring",
 "winapi",
 "winreg",
 ]
 [[package]]
 name = "ipnet"
 version = "2.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f88c5561171189e69df9d98bcf18fd5f9558300f7ea7b801eb8a0fd748bd8745"
 [[package]]
 name = "is-terminal"
 version = "0.4.4"
@@ -661,16 +551,7 @@ dependencies = [
 "hermit-abi 0.3.1",
 "io-lifetimes",
 "rustix",
- "windows-sys 0.45.0",
+ "windows-sys",
 ]
 [[package]]
 name = "itertools"
 version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
 dependencies = [
 "either",
 ]
 [[package]]
@@ -708,17 +589,11 @@ dependencies = [
 "wasm-bindgen",
 ]
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 [[package]]
 name = "libc"
-version = "0.2.144"
+version = "0.2.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b00cc1c228a6782d0f076e7b232802e0c5689d41bb5df366f2a6b6621cfdfe1"
+checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
 [[package]]
 name = "link-cplusplus"
@@ -729,12 +604,6 @@ dependencies = [
 "cc",
 ]
 [[package]]
 name = "linked-hash-map"
 version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 [[package]]
 name = "linux-raw-sys"
 version = "0.1.4"
@@ -760,27 +629,6 @@ dependencies = [
 "cfg-if",
 ]
 [[package]]
 name = "lru-cache"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "31e24f1ad8321ca0e8a1e0ac13f23cb668e6f5466c2c57319f6a5cf1cc8e3b1c"
 dependencies = [
 "linked-hash-map",
 ]
 [[package]]
 name = "match_cfg"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
 [[package]]
 name = "matches"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
 [[package]]
 name = "md-5"
 version = "0.10.5"
@@ -814,7 +662,7 @@ dependencies = [
 "libc",
 "log",
 "wasi 0.11.0+wasi-snapshot-preview1",
- "windows-sys 0.45.0",
+ "windows-sys",
 ]
 [[package]]
@@ -886,18 +734,12 @@ dependencies = [
 "libc",
 "redox_syscall",
 "smallvec",
- "windows-sys 0.45.0",
+ "windows-sys",
 ]
 [[package]]
 name = "percent-encoding"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
 [[package]]
 name = "pgcat"
-version = "1.0.2-alpha3"
+version = "1.0.1"
 dependencies = [
 "arc-swap",
 "async-trait",
@@ -912,7 +754,6 @@ dependencies = [
 "futures",
 "hmac",
 "hyper",
 "itertools",
 "jemallocator",
 "log",
 "md-5",
@@ -929,17 +770,14 @@ dependencies = [
 "rustls-pemfile",
 "serde",
 "serde_derive",
 "serde_json",
 "sha-1",
 "sha2",
- "socket2 0.5.3",
+ "socket2",
 "sqlparser",
 "stringprep",
 "tokio",
 "tokio-rustls",
 "tokio-test",
 "toml",
 "trust-dns-resolver",
 "webpki-roots",
 ]
@@ -1050,12 +888,6 @@ dependencies = [
 "unicode-ident",
 ]
 [[package]]
 name = "quick-error"
 version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 [[package]]
 name = "quote"
 version = "1.0.26"
@@ -1106,9 +938,9 @@ dependencies = [
 [[package]]
 name = "regex"
-version = "1.8.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af83e617f331cc6ae2da5443c602dfa5af81e517212d9d611a5b3ba1777b5370"
+checksum = "ac6cf59af1067a3fb53fbe5c88c053764e930f932be1d71d3ffe032cbe147f59"
 dependencies = [
 "aho-corasick",
 "memchr",
@@ -1117,19 +949,9 @@ dependencies = [
 [[package]]
 name = "regex-syntax"
 version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a5996294f19bd3aae0453a862ad728f60e6600695733dd5df01da90c54363a3c"
 [[package]]
 name = "resolv-conf"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52e44394d2086d010551b14b53b1f24e31647570cd1deb0379e2c21b329aba00"
+checksum = "b6868896879ba532248f33598de5181522d8b3d9d724dfd230911e1a7d4822f5"
 dependencies = [
 "hostname",
 "quick-error",
 ]
 [[package]]
 name = "ring"
@@ -1157,14 +979,14 @@ dependencies = [
 "io-lifetimes",
 "libc",
 "linux-raw-sys",
- "windows-sys 0.45.0",
+ "windows-sys",
 ]
 [[package]]
 name = "rustls"
-version = "0.21.1"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c911ba11bc8433e811ce56fde130ccf32f5127cab0e0194e9c68c5a5b671791e"
+checksum = "07180898a28ed6a7f7ba2311594308f595e3dd2e3c3812fa0a80a47b45f17e5d"
 dependencies = [
 "log",
 "ring",
@@ -1191,12 +1013,6 @@ dependencies = [
 "untrusted",
 ]
 [[package]]
 name = "ryu"
 version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -1224,9 +1040,6 @@ name = "serde"
 version = "1.0.160"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bb2f3770c8bce3bcda7e149193a069a0f4365bda1fa5cd88e03bca26afc1216c"
 dependencies = [
 "serde_derive",
 ]
 [[package]]
 name = "serde_derive"
@@ -1239,17 +1052,6 @@ dependencies = [
 "syn 2.0.9",
 ]
 [[package]]
 name = "serde_json"
 version = "1.0.96"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "057d394a50403bcac12672b2b18fb387ab6d289d957dab67dd201875391e52f1"
 dependencies = [
 "itoa",
 "ryu",
 "serde",
 ]
 [[package]]
 name = "serde_spanned"
 version = "0.6.1"
@@ -1313,24 +1115,14 @@ checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 [[package]]
 name = "socket2"
-version = "0.4.9"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
+checksum = "02e2d2db9033d13a1567121ddd7a095ee144db4e1ca1b1bda3419bc0da294ebd"
 dependencies = [
 "libc",
 "winapi",
 ]
 [[package]]
 name = "socket2"
 version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2538b18701741680e0322a2302176d3253a35388e2e62f172f64f4f16605f877"
 dependencies = [
 "libc",
 "windows-sys 0.48.0",
 ]
 [[package]]
 name = "spin"
 version = "0.5.2"
@@ -1344,18 +1136,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "355dc4d4b6207ca8a3434fc587db0a8016130a574dbcdbfb93d7f7b5bc5b211a"
 dependencies = [
 "log",
 "sqlparser_derive",
 ]
 [[package]]
 name = "sqlparser_derive"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55fe75cb4a364c7f7ae06c7dbbc8d84bddd85d6cdf9975963c3935bc1991761e"
 dependencies = [
 "proc-macro2",
 "quote",
 "syn 1.0.109",
 ]
 [[package]]
@@ -1411,26 +1191,6 @@ dependencies = [
 "winapi-util",
 ]
 [[package]]
 name = "thiserror"
 version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10deb33631e3c9018b9baf9dcbbc4f737320d2b576bac10f6aefa048fa407e3e"
 dependencies = [
 "thiserror-impl",
 ]
 [[package]]
 name = "thiserror-impl"
 version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
 dependencies = [
 "proc-macro2",
 "quote",
 "syn 1.0.109",
 ]
 [[package]]
 name = "time"
 version = "0.1.45"
@@ -1472,9 +1232,9 @@ dependencies = [
 "parking_lot",
 "pin-project-lite",
 "signal-hook-registry",
- "socket2 0.4.9",
+ "socket2",
 "tokio-macros",
- "windows-sys 0.45.0",
+ "windows-sys",
 ]
 [[package]]
@@ -1498,30 +1258,6 @@ dependencies = [
 "tokio",
 ]
 [[package]]
 name = "tokio-stream"
 version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d660770404473ccd7bc9f8b28494a811bc18542b915c0855c51e8f419d5223ce"
 dependencies = [
 "futures-core",
 "pin-project-lite",
 "tokio",
 ]
 [[package]]
 name = "tokio-test"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53474327ae5e166530d17f2d956afcb4f8a004de581b3cae10f12006bc8163e3"
 dependencies = [
 "async-stream",
 "bytes",
 "futures-core",
 "tokio",
 "tokio-stream",
 ]
 [[package]]
 name = "tokio-util"
 version = "0.7.7"
@@ -1584,21 +1320,9 @@ checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
 dependencies = [
 "cfg-if",
 "pin-project-lite",
 "tracing-attributes",
 "tracing-core",
 ]
 [[package]]
 name = "tracing-attributes"
 version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4017f8f45139870ca7e672686113917c71c7a6e02d4924eda67186083c03081a"
 dependencies = [
 "proc-macro2",
 "quote",
 "syn 1.0.109",
 ]
 [[package]]
 name = "tracing-core"
 version = "0.1.30"
@@ -1608,51 +1332,6 @@ dependencies = [
 "once_cell",
 ]
 [[package]]
 name = "trust-dns-proto"
 version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4f7f83d1e4a0e4358ac54c5c3681e5d7da5efc5a7a632c90bb6d6669ddd9bc26"
 dependencies = [
 "async-trait",
 "cfg-if",
 "data-encoding",
 "enum-as-inner",
 "futures-channel",
 "futures-io",
 "futures-util",
 "idna 0.2.3",
 "ipnet",
 "lazy_static",
 "rand",
 "smallvec",
 "thiserror",
 "tinyvec",
 "tokio",
 "tracing",
 "url",
 ]
 [[package]]
 name = "trust-dns-resolver"
 version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aff21aa4dcefb0a1afbfac26deb0adc93888c7d295fb63ab273ef276ba2b7cfe"
 dependencies = [
 "cfg-if",
 "futures-util",
 "ipconfig",
 "lazy_static",
 "lru-cache",
 "parking_lot",
 "resolv-conf",
 "smallvec",
 "thiserror",
 "tokio",
 "tracing",
 "trust-dns-proto",
 ]
 [[package]]
 name = "try-lock"
 version = "0.2.4"
@@ -1698,17 +1377,6 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 [[package]]
 name = "url"
 version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0d68c799ae75762b8c3fe375feb6600ef5602c883c5d21eb51c09f22b83c4643"
 dependencies = [
 "form_urlencoded",
 "idna 0.3.0",
 "percent-encoding",
 ]
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -1810,12 +1478,6 @@ dependencies = [
 "rustls-webpki",
 ]
 [[package]]
 name = "widestring"
 version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "17882f045410753661207383517a6f62ec3dbeb6a4ed2acce01f0728238d1983"
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1853,16 +1515,7 @@ version = "0.45.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
 dependencies = [
- "windows-targets 0.42.1",
+ "windows-targets",
 ]
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
 dependencies = [
 "windows-targets 0.48.0",
 ]
 [[package]]
@@ -1871,28 +1524,13 @@ version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e2522491fbfcd58cc84d47aeb2958948c4b8982e9a2d8a2a35bbaed431390e7"
 dependencies = [
- "windows_aarch64_gnullvm 0.42.1",
+ "windows_aarch64_gnullvm",
- "windows_aarch64_msvc 0.42.1",
+ "windows_aarch64_msvc",
- "windows_i686_gnu 0.42.1",
+ "windows_i686_gnu",
- "windows_i686_msvc 0.42.1",
+ "windows_i686_msvc",
- "windows_x86_64_gnu 0.42.1",
+ "windows_x86_64_gnu",
- "windows_x86_64_gnullvm 0.42.1",
+ "windows_x86_64_gnullvm",
- "windows_x86_64_msvc 0.42.1",
+ "windows_x86_64_msvc",
 ]
 [[package]]
 name = "windows-targets"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b1eb6f0cd7c80c79759c929114ef071b87354ce476d9d94271031c0497adfd5"
 dependencies = [
 "windows_aarch64_gnullvm 0.48.0",
 "windows_aarch64_msvc 0.48.0",
 "windows_i686_gnu 0.48.0",
 "windows_i686_msvc 0.48.0",
 "windows_x86_64_gnu 0.48.0",
 "windows_x86_64_gnullvm 0.48.0",
 "windows_x86_64_msvc 0.48.0",
 ]
 [[package]]
@@ -1901,84 +1539,42 @@ version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8c9864e83243fdec7fc9c5444389dcbbfd258f745e7853198f365e3c4968a608"
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c8b1b673ffc16c47a9ff48570a9d85e25d265735c503681332589af6253c6c7"
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de3887528ad530ba7bdbb1faa8275ec7a1155a45ffa57c37993960277145d640"
 [[package]]
 name = "windows_i686_gnu"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf4d1122317eddd6ff351aa852118a2418ad4214e6613a50e0191f7004372605"
 [[package]]
 name = "windows_i686_msvc"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 [[package]]
 name = "winnow"
 version = "0.3.3"
@@ -1987,12 +1583,3 @@ checksum = "faf09497b8f8b5ac5d3bb4d05c0a99be20f26fd3d5f2db7b0716e946d5103658"
 dependencies = [
 "memchr",
 ]
 [[package]]
 name = "winreg"
 version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
 dependencies = [
 "winapi",
 ]
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pgcat"
-version = "1.0.2-alpha3"
+version = "1.0.1"
 edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -14,12 +14,12 @@ rand = "0.8"
 chrono = "0.4"
 sha-1 = "0.10"
 toml = "0.7"
-serde = { version = "1", features = ["derive"] }
+serde = "1"
 serde_derive = "1"
 regex = "1"
 num_cpus = "1"
 once_cell = "1"
-sqlparser = {version = "0.33", features = ["visitor"] }
+sqlparser = "0.33.0"
 log = "0.4"
 arc-swap = "1"
 env_logger = "0.10"
@@ -34,7 +34,7 @@ hyper = { version = "0.14", features = ["full"] }
 phf = { version = "0.11.1", features = ["macros"] }
 exitcode = "1.1.2"
 futures = "0.3"
-socket2 = { version = "0.5.3", features = ["all"] }
+socket2 = { version = "0.4.7", features = ["all"] }
 nix = "0.26.2"
 atomic_enum = "0.2.0"
 postgres-protocol = "0.6.5"
@@ -42,11 +42,6 @@ fallible-iterator = "0.2"
 pin-project = "1"
 webpki-roots = "0.23"
 rustls = { version = "0.21", features = ["dangerous_configuration"] }
 trust-dns-resolver = "0.22.0"
 tokio-test = "0.4.2"
 serde_json = "1"
 itertools = "0.10"
 [target.'cfg(not(target_env = "msvc"))'.dependencies]
 jemallocator = "0.5.0"
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ PostgreSQL pooler and proxy (like PgBouncer) with support for sharding, load bal
 | Failover | **Stable** | Queries are automatically rerouted around broken replicas, validated by regular health checks. |
 | Admin database statistics | **Stable** | Pooler statistics and administration via the `pgbouncer` and `pgcat` databases. |
 | Prometheus statistics | **Stable** | Statistics are reported via a HTTP endpoint for Prometheus. |
-| SSL/TLS | **Stable** | Clients can connect to the pooler using TLS. Pooler can connect to Postgres servers using TLS. |
+| Client TLS | **Stable** | Clients can connect to the pooler using TLS/SSL. |
 | Client/Server authentication | **Stable** | Clients can connect using MD5 authentication, supported by `libpq` and all Postgres client drivers. PgCat can connect to Postgres using MD5 and SCRAM-SHA-256. |
 | Live configuration reloading | **Stable** | Identical to PgBouncer; all settings can be reloaded dynamically (except `host` and `port`). |
 | Auth passthrough | **Stable** | MD5 password authentication can be configured to use an `auth_query` so no cleartext passwords are needed in the config file.|
--- a/dev/docker-compose.yaml
+++ b/dev/docker-compose.yaml
@@ -25,7 +25,7 @@ x-common-env-pg:
 services:
  main:
-    image: gcr.io/google_containers/pause:3.2
+    image: kubernetes/pause
    ports:
      - 6432
@@ -64,7 +64,7 @@ services:
      <<: *common-env-pg
      POSTGRES_INITDB_ARGS: --auth-local=md5 --auth-host=md5 --auth=md5
      PGPORT: 10432
-    command: ["postgres", "-p", "10432", "-c", "shared_preload_libraries=pg_stat_statements", "-c", "pg_stat_statements.track=all", "-c", "pg_stat_statements.max=100000"]
+    command: ["postgres", "-p", "5432", "-c", "shared_preload_libraries=pg_stat_statements", "-c", "pg_stat_statements.track=all", "-c", "pg_stat_statements.max=100000"]
  toxiproxy:
    build: .
--- a/pgcat.minimal.toml
+++ b/pgcat.minimal.toml
@@ -1,22 +0,0 @@
 # This is an example of the most basic config
 # that will mimic what PgBouncer does in transaction mode with one server.
 [general]
 host = "0.0.0.0"
 port = 6433
 admin_username = "pgcat"
 admin_password = "pgcat"
 [pools.pgml.users.0]
 username = "postgres"
 password = "postgres"
 pool_size = 10
 min_pool_size = 1
 pool_mode = "transaction"
 [pools.pgml.shards.0]
 servers = [
  ["127.0.0.1", 28815, "primary"]
 ]
 database = "postgres"
--- a/pgcat.toml
+++ b/pgcat.toml
@@ -77,58 +77,6 @@ admin_username = "admin_user"
 # Password to access the virtual administrative database
 admin_password = "admin_pass"
 # Default plugins that are configured on all pools.
 [plugins]
 # Prewarmer plugin that runs queries on server startup, before giving the connection
 # to the client.
 [plugins.prewarmer]
 enabled = false
 queries = [
  "SELECT pg_prewarm('pgbench_accounts')",
 ]
 # Log all queries to stdout.
 [plugins.query_logger]
 enabled = false
 # Block access to tables that Postgres does not allow us to control.
 [plugins.table_access]
 enabled = false
 tables = [
  "pg_user",
  "pg_roles",
  "pg_database",
 ]
 # Intercept user queries and give a fake reply.
 [plugins.intercept]
 enabled = true
 [plugins.intercept.queries.0]
 query = "select current_database() as a, current_schemas(false) as b"
 schema = [
  ["a", "text"],
  ["b", "text"],
 ]
 result = [
  ["${DATABASE}", "{public}"],
 ]
 [plugins.intercept.queries.1]
 query = "select current_database(), current_schema(), current_user"
 schema = [
  ["current_database", "text"],
  ["current_schema", "text"],
  ["current_user", "text"],
 ]
 result = [
  ["${DATABASE}", "public", "${USER}"],
 ]
 # pool configs are structured as pool.<pool_name>
 # the pool_name is what clients use as database name when connecting.
 # For a pool named `sharded_db`, clients access that pool using connection string like
@@ -198,61 +146,6 @@ idle_timeout = 40000
 # Connect timeout can be overwritten in the pool
 connect_timeout = 3000
 # When enabled, ip resolutions for server connections specified using hostnames will be cached
 # and checked for changes every `dns_max_ttl` seconds. If a change in the host resolution is found
 # old ip connections are closed (gracefully) and new connections will start using new ip.
 # dns_cache_enabled = false
 # Specifies how often (in seconds) cached ip addresses for servers are rechecked (see `dns_cache_enabled`).
 # dns_max_ttl = 30
 # Plugins can be configured on a pool-per-pool basis. This overrides the global plugins setting,
 # so all plugins have to be configured here again.
 [pool.sharded_db.plugins]
 [pools.sharded_db.plugins.prewarmer]
 enabled = true
 queries = [
  "SELECT pg_prewarm('pgbench_accounts')",
 ]
 [pools.sharded_db.plugins.query_logger]
 enabled = false
 [pools.sharded_db.plugins.table_access]
 enabled = false
 tables = [
  "pg_user",
  "pg_roles",
  "pg_database",
 ]
 [pools.sharded_db.plugins.intercept]
 enabled = true
 [pools.sharded_db.plugins.intercept.queries.0]
 query = "select current_database() as a, current_schemas(false) as b"
 schema = [
  ["a", "text"],
  ["b", "text"],
 ]
 result = [
  ["${DATABASE}", "{public}"],
 ]
 [pools.sharded_db.plugins.intercept.queries.1]
 query = "select current_database(), current_schema(), current_user"
 schema = [
  ["current_database", "text"],
  ["current_schema", "text"],
  ["current_user", "text"],
 ]
 result = [
  ["${DATABASE}", "public", "${USER}"],
 ]
 # User configs are structured as pool.<pool_name>.users.<user_index>
 # This section holds the credentials for users that may connect to this cluster
 [pools.sharded_db.users.0]
--- a/src/admin.rs
+++ b/src/admin.rs
@@ -12,9 +12,9 @@ use tokio::time::Instant;
 use crate::config::{get_config, reload_config, VERSION};
 use crate::errors::Error;
 use crate::messages::*;
 use crate::pool::ClientServerMap;
 use crate::pool::{get_all_pools, get_pool};
 use crate::stats::{get_client_stats, get_pool_stats, get_server_stats, ClientState, ServerState};
 use crate::ClientServerMap;
 pub fn generate_server_info_for_admin() -> BytesMut {
    let mut server_info = BytesMut::new();
--- a/src/client.rs
+++ b/src/client.rs
@@ -16,7 +16,6 @@ use crate::auth_passthrough::refetch_auth_hash;
 use crate::config::{get_config, get_idle_client_in_transaction_timeout, Address, PoolMode};
 use crate::constants::*;
 use crate::messages::*;
 use crate::plugins::PluginOutput;
 use crate::pool::{get_pool, ClientServerMap, ConnectionPool};
 use crate::query_router::{Command, QueryRouter};
 use crate::server::Server;
@@ -766,9 +765,6 @@ where
        self.stats.register(self.stats.clone());
        // Result returned by one of the plugins.
        let mut plugin_output = None;
        // Our custom protocol loop.
        // We expect the client to either start a transaction with regular queries
        // or issue commands for our sharding and server selection protocol.
@@ -819,25 +815,7 @@ where
                'Q' => {
                    if query_router.query_parser_enabled() {
-                        if let Ok(ast) = QueryRouter::parse(&message) {
+                        query_router.infer(&message);
                            let plugin_result = query_router.execute_plugins(&ast).await;
                            match plugin_result {
                                Ok(PluginOutput::Deny(error)) => {
                                    error_response(&mut self.write, &error).await?;
                                    continue;
                                }
                                Ok(PluginOutput::Intercept(result)) => {
                                    write_all(&mut self.write, result).await?;
                                    continue;
                                }
                                _ => (),
                            };
                            let _ = query_router.infer(&ast);
                        }
                    }
                }
@@ -845,13 +823,7 @@ where
                    self.buffer.put(&message[..]);
                    if query_router.query_parser_enabled() {
-                        if let Ok(ast) = QueryRouter::parse(&message) {
+                        query_router.infer(&message);
                            if let Ok(output) = query_router.execute_plugins(&ast).await {
                                plugin_output = Some(output);
                            }
                            let _ = query_router.infer(&ast);
                        }
                    }
                    continue;
@@ -885,18 +857,6 @@ where
                continue;
            }
            // Check on plugin results.
            match plugin_output {
                Some(PluginOutput::Deny(error)) => {
                    self.buffer.clear();
                    error_response(&mut self.write, &error).await?;
                    plugin_output = None;
                    continue;
                }
                _ => (),
            };
            // Get a pool instance referenced by the most up-to-date
            // pointer. This ensures we always read the latest config
            // when starting a query.
@@ -1125,27 +1085,6 @@ where
                match code {
                    // Query
                    'Q' => {
                        if query_router.query_parser_enabled() {
                            if let Ok(ast) = QueryRouter::parse(&message) {
                                let plugin_result = query_router.execute_plugins(&ast).await;
                                match plugin_result {
                                    Ok(PluginOutput::Deny(error)) => {
                                        error_response(&mut self.write, &error).await?;
                                        continue;
                                    }
                                    Ok(PluginOutput::Intercept(result)) => {
                                        write_all(&mut self.write, result).await?;
                                        continue;
                                    }
                                    _ => (),
                                };
                                let _ = query_router.infer(&ast);
                            }
                        }
                        debug!("Sending query to server");
                        self.send_and_receive_loop(
@@ -1185,14 +1124,6 @@ where
                    // Parse
                    // The query with placeholders is here, e.g. `SELECT * FROM users WHERE email = $1 AND active = $2`.
                    'P' => {
                        if query_router.query_parser_enabled() {
                            if let Ok(ast) = QueryRouter::parse(&message) {
                                if let Ok(output) = query_router.execute_plugins(&ast).await {
                                    plugin_output = Some(output);
                                }
                            }
                        }
                        self.buffer.put(&message[..]);
                    }
@@ -1224,24 +1155,6 @@ where
                    'S' => {
                        debug!("Sending query to server");
                        match plugin_output {
                            Some(PluginOutput::Deny(error)) => {
                                error_response(&mut self.write, &error).await?;
                                plugin_output = None;
                                self.buffer.clear();
                                continue;
                            }
                            Some(PluginOutput::Intercept(result)) => {
                                write_all(&mut self.write, result).await?;
                                plugin_output = None;
                                self.buffer.clear();
                                continue;
                            }
                            _ => (),
                        };
                        self.buffer.put(&message[..]);
                        let first_message_code = (*self.buffer.get(0).unwrap_or(&0)) as char;
--- a/src/config.rs
+++ b/src/config.rs
@@ -12,7 +12,6 @@ use std::sync::Arc;
 use tokio::fs::File;
 use tokio::io::AsyncReadExt;
 use crate::dns_cache::CachedResolver;
 use crate::errors::Error;
 use crate::pool::{ClientServerMap, ConnectionPool};
 use crate::sharding::ShardingFunction;
@@ -122,16 +121,6 @@ impl Default for Address {
    }
 }
 impl std::fmt::Display for Address {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        write!(
            f,
            "[address: {}:{}][database: {}][user: {}]",
            self.host, self.port, self.database, self.username
        )
    }
 }
 // We need to implement PartialEq by ourselves so we skip stats in the comparison
 impl PartialEq for Address {
    fn eq(&self, other: &Self) -> bool {
@@ -245,8 +234,6 @@ pub struct General {
    pub port: u16,
    pub enable_prometheus_exporter: Option<bool>,
    #[serde(default = "General::default_prometheus_exporter_port")]
    pub prometheus_exporter_port: i16,
    #[serde(default = "General::default_connect_timeout")]
@@ -268,12 +255,6 @@ pub struct General {
    #[serde(default)] // False
    pub log_client_disconnections: bool,
    #[serde(default)] // False
    pub dns_cache_enabled: bool,
    #[serde(default = "General::default_dns_max_ttl")]
    pub dns_max_ttl: u64,
    #[serde(default = "General::default_shutdown_timeout")]
    pub shutdown_timeout: u64,
@@ -310,10 +291,6 @@ pub struct General {
    pub admin_username: String,
    pub admin_password: String,
    #[serde(default = "General::default_validate_config")]
    pub validate_config: bool,
    // Support for auth query
    pub auth_query: Option<String>,
    pub auth_query_user: Option<String>,
    pub auth_query_password: Option<String>,
@@ -359,10 +336,6 @@ impl General {
        60000
    }
    pub fn default_dns_max_ttl() -> u64 {
        30
    }
    pub fn default_healthcheck_timeout() -> u64 {
        1000
    }
@@ -382,14 +355,6 @@ impl General {
    pub fn default_idle_client_in_transaction_timeout() -> u64 {
        0
    }
    pub fn default_validate_config() -> bool {
        true
    }
    pub fn default_prometheus_exporter_port() -> i16 {
        9930
    }
 }
 impl Default for General {
@@ -413,8 +378,6 @@ impl Default for General {
            log_client_connections: false,
            log_client_disconnections: false,
            autoreload: None,
            dns_cache_enabled: false,
            dns_max_ttl: Self::default_dns_max_ttl(),
            tls_certificate: None,
            tls_private_key: None,
            server_tls: false,
@@ -425,7 +388,6 @@ impl Default for General {
            auth_query_user: None,
            auth_query_password: None,
            server_lifetime: 1000 * 3600 * 24, // 24 hours,
            validate_config: true,
        }
    }
 }
@@ -478,7 +440,6 @@ pub struct Pool {
    #[serde(default = "Pool::default_load_balancing_mode")]
    pub load_balancing_mode: LoadBalancingMode,
    #[serde(default = "Pool::default_default_role")]
    pub default_role: String,
    #[serde(default)] // False
@@ -493,7 +454,6 @@ pub struct Pool {
    pub server_lifetime: Option<u64>,
    #[serde(default = "Pool::default_sharding_function")]
    pub sharding_function: ShardingFunction,
    #[serde(default = "Pool::default_automatic_sharding_key")]
@@ -507,7 +467,6 @@ pub struct Pool {
    pub auth_query_user: Option<String>,
    pub auth_query_password: Option<String>,
    pub plugins: Option<Plugins>,
    pub shards: BTreeMap<String, Shard>,
    pub users: BTreeMap<String, User>,
    // Note, don't put simple fields below these configs. There's a compatibility issue with TOML that makes it
@@ -540,14 +499,6 @@ impl Pool {
        None
    }
    pub fn default_default_role() -> String {
        "any".into()
    }
    pub fn default_sharding_function() -> ShardingFunction {
        ShardingFunction::PgBigintHash
    }
    pub fn validate(&mut self) -> Result<(), Error> {
        match self.default_role.as_ref() {
            "any" => (),
@@ -636,7 +587,6 @@ impl Default for Pool {
            auth_query_user: None,
            auth_query_password: None,
            server_lifetime: None,
            plugins: None,
        }
    }
 }
@@ -715,76 +665,6 @@ impl Default for Shard {
    }
 }
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, Hash, Eq)]
 pub struct Plugins {
    pub intercept: Option<Intercept>,
    pub table_access: Option<TableAccess>,
    pub query_logger: Option<QueryLogger>,
    pub prewarmer: Option<Prewarmer>,
 }
 impl std::fmt::Display for Plugins {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        write!(
            f,
            "interceptor: {}, table_access: {}, query_logger: {}, prewarmer: {}",
            self.intercept.is_some(),
            self.table_access.is_some(),
            self.query_logger.is_some(),
            self.prewarmer.is_some(),
        )
    }
 }
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, Hash, Eq)]
 pub struct Intercept {
    pub enabled: bool,
    pub queries: BTreeMap<String, Query>,
 }
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, Hash, Eq)]
 pub struct TableAccess {
    pub enabled: bool,
    pub tables: Vec<String>,
 }
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, Hash, Eq)]
 pub struct QueryLogger {
    pub enabled: bool,
 }
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, Hash, Eq)]
 pub struct Prewarmer {
    pub enabled: bool,
    pub queries: Vec<String>,
 }
 impl Intercept {
    pub fn substitute(&mut self, db: &str, user: &str) {
        for (_, query) in self.queries.iter_mut() {
            query.substitute(db, user);
            query.query = query.query.to_ascii_lowercase();
        }
    }
 }
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, Hash, Eq)]
 pub struct Query {
    pub query: String,
    pub schema: Vec<Vec<String>>,
    pub result: Vec<Vec<String>>,
 }
 impl Query {
    pub fn substitute(&mut self, db: &str, user: &str) {
        for col in self.result.iter_mut() {
            for i in 0..col.len() {
                col[i] = col[i].replace("${USER}", user).replace("${DATABASE}", db);
            }
        }
    }
 }
 /// Configuration wrapper.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct Config {
@@ -802,13 +682,7 @@ pub struct Config {
    #[serde(default = "Config::default_path")]
    pub path: String,
    // General and global settings.
    pub general: General,
    // Plugins that should run in all pools.
    pub plugins: Option<Plugins>,
    // Connection pools.
    pub pools: HashMap<String, Pool>,
 }
@@ -846,7 +720,6 @@ impl Default for Config {
            path: Self::default_path(),
            general: General::default(),
            pools: HashMap::default(),
            plugins: None,
        }
    }
 }
@@ -993,13 +866,6 @@ impl Config {
            "Server TLS certificate verification: {}",
            self.general.verify_server_certificate
        );
        info!(
            "Plugins: {}",
            match self.plugins {
                Some(ref plugins) => plugins.to_string(),
                None => "not configured".into(),
            }
        );
        for (pool_name, pool_config) in &self.pools {
            // TODO: Make this output prettier (maybe a table?)
@@ -1066,14 +932,6 @@ impl Config {
                    None => "default".to_string(),
                }
            );
            info!(
                "[pool: {}] Plugins: {}",
                pool_name,
                match pool_config.plugins {
                    Some(ref plugins) => plugins.to_string(),
                    None => "not configured".into(),
                }
            );
            for user in &pool_config.users {
                info!(
@@ -1253,7 +1111,6 @@ pub async fn parse(path: &str) -> Result<(), Error> {
 pub async fn reload_config(client_server_map: ClientServerMap) -> Result<bool, Error> {
    let old_config = get_config();
    match parse(&old_config.path).await {
        Ok(()) => (),
        Err(err) => {
@@ -1261,18 +1118,14 @@ pub async fn reload_config(client_server_map: ClientServerMap) -> Result<bool, E
            return Err(Error::BadConfig);
        }
    };
    let new_config = get_config();
-    match CachedResolver::from_config().await {
+    if old_config.pools != new_config.pools {
-        Ok(_) => (),
+        info!("Pool configuration changed");
        Err(err) => error!("DNS cache reinitialization error: {:?}", err),
    };
    if old_config != new_config {
        info!("Config changed, reloading");
        ConnectionPool::from_config(client_server_map).await?;
        Ok(true)
    } else if old_config != new_config {
        Ok(true)
    } else {
        Ok(false)
    }
--- a/src/dns_cache.rs
+++ b/src/dns_cache.rs
@@ -1,410 +0,0 @@
 use crate::config::get_config;
 use crate::errors::Error;
 use arc_swap::ArcSwap;
 use log::{debug, error, info, warn};
 use once_cell::sync::Lazy;
 use std::collections::{HashMap, HashSet};
 use std::io;
 use std::net::IpAddr;
 use std::sync::Arc;
 use std::sync::RwLock;
 use tokio::time::{sleep, Duration};
 use trust_dns_resolver::error::{ResolveError, ResolveResult};
 use trust_dns_resolver::lookup_ip::LookupIp;
 use trust_dns_resolver::TokioAsyncResolver;
 /// Cached Resolver Globally available
 pub static CACHED_RESOLVER: Lazy<ArcSwap<CachedResolver>> =
    Lazy::new(|| ArcSwap::from_pointee(CachedResolver::default()));
 // Ip addressed are returned as a set of addresses
 // so we can compare.
 #[derive(Clone, PartialEq, Debug)]
 pub struct AddrSet {
    set: HashSet<IpAddr>,
 }
 impl AddrSet {
    fn new() -> AddrSet {
        AddrSet {
            set: HashSet::new(),
        }
    }
 }
 impl From<LookupIp> for AddrSet {
    fn from(lookup_ip: LookupIp) -> Self {
        let mut addr_set = AddrSet::new();
        for address in lookup_ip.iter() {
            addr_set.set.insert(address);
        }
        addr_set
    }
 }
 ///
 /// A CachedResolver is a DNS resolution cache mechanism with customizable expiration time.
 ///
 /// The system works as follows:
 ///
 /// When a host is to be resolved, if we have not resolved it before, a new resolution is
 /// executed and stored in the internal cache. Concurrently, every `dns_max_ttl` time, the
 /// cache is refreshed.
 ///
 /// # Example:
 ///
 /// ```
 /// use pgcat::dns_cache::{CachedResolverConfig, CachedResolver};
 ///
 /// # tokio_test::block_on(async {
 /// let config = CachedResolverConfig::default();
 /// let resolver = CachedResolver::new(config, None).await.unwrap();
 /// let addrset = resolver.lookup_ip("www.example.com.").await.unwrap();
 /// # })
 /// ```
 ///
 /// // Now the ip resolution is stored in local cache and subsequent
 /// // calls will be returned from cache. Also, the cache is refreshed
 /// // and updated every 10 seconds.
 ///
 /// // You can now check if an 'old' lookup differs from what it's currently
 /// // store in cache by using `has_changed`.
 /// resolver.has_changed("www.example.com.", addrset)
 #[derive(Default)]
 pub struct CachedResolver {
    // The configuration of the cached_resolver.
    config: CachedResolverConfig,
    // This is the hash that contains the hash.
    data: Option<RwLock<HashMap<String, AddrSet>>>,
    // The resolver to be used for DNS queries.
    resolver: Option<TokioAsyncResolver>,
    // The RefreshLoop
    refresh_loop: RwLock<Option<tokio::task::JoinHandle<()>>>,
 }
 ///
 /// Configuration
 #[derive(Clone, Debug, Default, PartialEq)]
 pub struct CachedResolverConfig {
    /// Amount of time in secods that a resolved dns address is considered stale.
    dns_max_ttl: u64,
    /// Enabled or disabled? (this is so we can reload config)
    enabled: bool,
 }
 impl CachedResolverConfig {
    fn new(dns_max_ttl: u64, enabled: bool) -> Self {
        CachedResolverConfig {
            dns_max_ttl,
            enabled,
        }
    }
 }
 impl From<crate::config::Config> for CachedResolverConfig {
    fn from(config: crate::config::Config) -> Self {
        CachedResolverConfig::new(config.general.dns_max_ttl, config.general.dns_cache_enabled)
    }
 }
 impl CachedResolver {
    ///
    /// Returns a new Arc<CachedResolver> based on passed configuration.
    /// It also starts the loop that will refresh cache entries.
    ///
    /// # Arguments:
    ///
    /// * `config` - The `CachedResolverConfig` to be used to create the resolver.
    ///
    /// # Example:
    ///
    /// ```
    /// use pgcat::dns_cache::{CachedResolverConfig, CachedResolver};
    ///
    /// # tokio_test::block_on(async {
    /// let config = CachedResolverConfig::default();
    /// let resolver = CachedResolver::new(config, None).await.unwrap();
    /// # })
    /// ```
    ///
    pub async fn new(
        config: CachedResolverConfig,
        data: Option<HashMap<String, AddrSet>>,
    ) -> Result<Arc<Self>, io::Error> {
        // Construct a new Resolver with default configuration options
        let resolver = Some(TokioAsyncResolver::tokio_from_system_conf()?);
        let data = if let Some(hash) = data {
            Some(RwLock::new(hash))
        } else {
            Some(RwLock::new(HashMap::new()))
        };
        let instance = Arc::new(Self {
            config,
            resolver,
            data,
            refresh_loop: RwLock::new(None),
        });
        if instance.enabled() {
            info!("Scheduling DNS refresh loop");
            let refresh_loop = tokio::task::spawn({
                let instance = instance.clone();
                async move {
                    instance.refresh_dns_entries_loop().await;
                }
            });
            *(instance.refresh_loop.write().unwrap()) = Some(refresh_loop);
        }
        Ok(instance)
    }
    pub fn enabled(&self) -> bool {
        self.config.enabled
    }
    // Schedules the refresher
    async fn refresh_dns_entries_loop(&self) {
        let resolver = TokioAsyncResolver::tokio_from_system_conf().unwrap();
        let interval = Duration::from_secs(self.config.dns_max_ttl);
        loop {
            debug!("Begin refreshing cached DNS addresses.");
            // To minimize the time we hold the lock, we first create
            // an array with keys.
            let mut hostnames: Vec<String> = Vec::new();
            {
                if let Some(ref data) = self.data {
                    for hostname in data.read().unwrap().keys() {
                        hostnames.push(hostname.clone());
                    }
                }
            }
            for hostname in hostnames.iter() {
                let addrset = self
                    .fetch_from_cache(hostname.as_str())
                    .expect("Could not obtain expected address from cache, this should not happen");
                match resolver.lookup_ip(hostname).await {
                    Ok(lookup_ip) => {
                        let new_addrset = AddrSet::from(lookup_ip);
                        debug!(
                            "Obtained address for host ({}) -> ({:?})",
                            hostname, new_addrset
                        );
                        if addrset != new_addrset {
                            debug!(
                                "Addr changed from {:?} to {:?} updating cache.",
                                addrset, new_addrset
                            );
                            self.store_in_cache(hostname, new_addrset);
                        }
                    }
                    Err(err) => {
                        error!(
                            "There was an error trying to resolv {}: ({}).",
                            hostname, err
                        );
                    }
                }
            }
            debug!("Finished refreshing cached DNS addresses.");
            sleep(interval).await;
        }
    }
    /// Returns a `AddrSet` given the specified hostname.
    ///
    /// This method first tries to fetch the value from the cache, if it misses
    /// then it is resolved and stored in the cache. TTL from records is ignored.
    ///
    /// # Arguments
    ///
    /// * `host`      - A string slice referencing the hostname to be resolved.
    ///
    /// # Example:
    ///
    /// ```
    /// use pgcat::dns_cache::{CachedResolverConfig, CachedResolver};
    ///
    /// # tokio_test::block_on(async {
    /// let config = CachedResolverConfig::default();
    /// let resolver = CachedResolver::new(config, None).await.unwrap();
    /// let response = resolver.lookup_ip("www.google.com.");
    /// # })
    /// ```
    ///
    pub async fn lookup_ip(&self, host: &str) -> ResolveResult<AddrSet> {
        debug!("Lookup up {} in cache", host);
        match self.fetch_from_cache(host) {
            Some(addr_set) => {
                debug!("Cache hit!");
                Ok(addr_set)
            }
            None => {
                debug!("Not found, executing a dns query!");
                if let Some(ref resolver) = self.resolver {
                    let addr_set = AddrSet::from(resolver.lookup_ip(host).await?);
                    debug!("Obtained: {:?}", addr_set);
                    self.store_in_cache(host, addr_set.clone());
                    Ok(addr_set)
                } else {
                    Err(ResolveError::from("No resolver available"))
                }
            }
        }
    }
    //
    // Returns true if the stored host resolution differs from the AddrSet passed.
    pub fn has_changed(&self, host: &str, addr_set: &AddrSet) -> bool {
        if let Some(fetched_addr_set) = self.fetch_from_cache(host) {
            return fetched_addr_set != *addr_set;
        }
        false
    }
    // Fetches an AddrSet from the inner cache adquiring the read lock.
    fn fetch_from_cache(&self, key: &str) -> Option<AddrSet> {
        if let Some(ref hash) = self.data {
            if let Some(addr_set) = hash.read().unwrap().get(key) {
                return Some(addr_set.clone());
            }
        }
        None
    }
    // Sets up the global CACHED_RESOLVER static variable so we can globally use DNS
    // cache.
    pub async fn from_config() -> Result<(), Error> {
        let cached_resolver = CACHED_RESOLVER.load();
        let desired_config = CachedResolverConfig::from(get_config());
        if cached_resolver.config != desired_config {
            if let Some(ref refresh_loop) = *(cached_resolver.refresh_loop.write().unwrap()) {
                warn!("Killing Dnscache refresh loop as its configuration is being reloaded");
                refresh_loop.abort()
            }
            let new_resolver = if let Some(ref data) = cached_resolver.data {
                let data = Some(data.read().unwrap().clone());
                CachedResolver::new(desired_config, data).await
            } else {
                CachedResolver::new(desired_config, None).await
            };
            match new_resolver {
                Ok(ok) => {
                    CACHED_RESOLVER.store(ok);
                    Ok(())
                }
                Err(err) => {
                    let message = format!("Error setting up cached_resolver. Error: {:?}, will continue without this feature.", err);
                    Err(Error::DNSCachedError(message))
                }
            }
        } else {
            Ok(())
        }
    }
    // Stores the AddrSet in cache adquiring the write lock.
    fn store_in_cache(&self, host: &str, addr_set: AddrSet) {
        if let Some(ref data) = self.data {
            data.write().unwrap().insert(host.to_string(), addr_set);
        } else {
            error!("Could not insert, Hash not initialized");
        }
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    use trust_dns_resolver::error::ResolveError;
    #[tokio::test]
    async fn new() {
        let config = CachedResolverConfig {
            dns_max_ttl: 10,
            enabled: true,
        };
        let resolver = CachedResolver::new(config, None).await;
        assert!(resolver.is_ok());
    }
    #[tokio::test]
    async fn lookup_ip() {
        let config = CachedResolverConfig {
            dns_max_ttl: 10,
            enabled: true,
        };
        let resolver = CachedResolver::new(config, None).await.unwrap();
        let response = resolver.lookup_ip("www.google.com.").await;
        assert!(response.is_ok());
    }
    #[tokio::test]
    async fn has_changed() {
        let config = CachedResolverConfig {
            dns_max_ttl: 10,
            enabled: true,
        };
        let resolver = CachedResolver::new(config, None).await.unwrap();
        let hostname = "www.google.com.";
        let response = resolver.lookup_ip(hostname).await;
        let addr_set = response.unwrap();
        assert!(!resolver.has_changed(hostname, &addr_set));
    }
    #[tokio::test]
    async fn unknown_host() {
        let config = CachedResolverConfig {
            dns_max_ttl: 10,
            enabled: true,
        };
        let resolver = CachedResolver::new(config, None).await.unwrap();
        let hostname = "www.idontexists.";
        let response = resolver.lookup_ip(hostname).await;
        assert!(matches!(response, Err(ResolveError { .. })));
    }
    #[tokio::test]
    async fn incorrect_address() {
        let config = CachedResolverConfig {
            dns_max_ttl: 10,
            enabled: true,
        };
        let resolver = CachedResolver::new(config, None).await.unwrap();
        let hostname = "w  ww.idontexists.";
        let response = resolver.lookup_ip(hostname).await;
        assert!(matches!(response, Err(ResolveError { .. })));
        assert!(!resolver.has_changed(hostname, &AddrSet::new()));
    }
    #[tokio::test]
    // Ok, this test is based on the fact that google does DNS RR
    // and does not responds with every available ip everytime, so
    // if I cache here, it will miss after one cache iteration or two.
    async fn thread() {
        let config = CachedResolverConfig {
            dns_max_ttl: 10,
            enabled: true,
        };
        let resolver = CachedResolver::new(config, None).await.unwrap();
        let hostname = "www.google.com.";
        let response = resolver.lookup_ip(hostname).await;
        let addr_set = response.unwrap();
        assert!(!resolver.has_changed(hostname, &addr_set));
        let resolver_for_refresher = resolver.clone();
        let _thread_handle = tokio::task::spawn(async move {
            resolver_for_refresher.refresh_dns_entries_loop().await;
        });
        assert!(!resolver.has_changed(hostname, &addr_set));
    }
 }
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -1,7 +1,7 @@
 //! Errors.
 /// Various errors.
-#[derive(Debug, PartialEq, Clone)]
+#[derive(Debug, PartialEq)]
 pub enum Error {
    SocketError(String),
    ClientSocketError(String, ClientIdentifier),
@@ -19,13 +19,10 @@ pub enum Error {
    ClientError(String),
    TlsError,
    StatementTimeout,
    DNSCachedError(String),
    ShuttingDown,
    ParseBytesError(String),
    AuthError(String),
    AuthPassthroughError(String),
    UnsupportedStatement,
    QueryRouterParserError(String),
 }
 #[derive(Clone, PartialEq, Debug)]
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,17 +1,11 @@
 pub mod admin;
 pub mod auth_passthrough;
 pub mod client;
 pub mod config;
 pub mod constants;
 pub mod dns_cache;
 pub mod errors;
 pub mod messages;
 pub mod mirrors;
 pub mod multi_logger;
 pub mod plugins;
 pub mod pool;
 pub mod prometheus;
 pub mod query_router;
 pub mod scram;
 pub mod server;
 pub mod sharding;
--- a/src/main.rs
+++ b/src/main.rs
@@ -36,7 +36,6 @@ extern crate sqlparser;
 extern crate tokio;
 extern crate tokio_rustls;
 extern crate toml;
 extern crate trust_dns_resolver;
 #[cfg(not(target_env = "msvc"))]
 use jemallocator::Jemalloc;
@@ -61,19 +60,36 @@ use std::str::FromStr;
 use std::sync::Arc;
 use tokio::sync::broadcast;
-use pgcat::config::{get_config, reload_config, VERSION};
+mod admin;
-use pgcat::dns_cache;
+mod auth_passthrough;
-use pgcat::messages::configure_socket;
+mod client;
-use pgcat::pool::{ClientServerMap, ConnectionPool};
+mod config;
-use pgcat::prometheus::start_metric_server;
+mod constants;
-use pgcat::stats::{Collector, Reporter, REPORTER};
+mod errors;
 mod messages;
 mod mirrors;
 mod multi_logger;
 mod pool;
 mod prometheus;
 mod query_router;
 mod scram;
 mod server;
 mod sharding;
 mod stats;
 mod tls;
 use crate::config::{get_config, reload_config, VERSION};
 use crate::messages::configure_socket;
 use crate::pool::{ClientServerMap, ConnectionPool};
 use crate::prometheus::start_metric_server;
 use crate::stats::{Collector, Reporter, REPORTER};
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    pgcat::multi_logger::MultiLogger::init().unwrap();
+    multi_logger::MultiLogger::init().unwrap();
    info!("Welcome to PgCat! Meow. (Version {})", VERSION);
-    if !pgcat::query_router::QueryRouter::setup() {
+    if !query_router::QueryRouter::setup() {
        error!("Could not setup query router");
        std::process::exit(exitcode::CONFIG);
    }
@@ -91,7 +107,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
        let runtime = Builder::new_multi_thread().worker_threads(1).build()?;
        runtime.block_on(async {
-            match pgcat::config::parse(&config_file).await {
+            match config::parse(&config_file).await {
                Ok(_) => (),
                Err(err) => {
                    error!("Config parse error: {:?}", err);
@@ -150,12 +166,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
        // Statistics reporting.
        REPORTER.store(Arc::new(Reporter::default()));
        // Starts (if enabled) dns cache before pools initialization
        match dns_cache::CachedResolver::from_config().await {
                Ok(_) => (),
                Err(err) => error!("DNS cache initialization error: {:?}", err),
        };
        // Connection pool that allows to query all shards and replicas.
        match ConnectionPool::from_config(client_server_map.clone()).await {
            Ok(_) => (),
@@ -285,7 +295,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                    tokio::task::spawn(async move {
                        let start = chrono::offset::Utc::now().naive_utc();
-                        match pgcat::client::client_entrypoint(
+                        match client::client_entrypoint(
                            socket,
                            client_server_map,
                            shutdown_rx,
@@ -316,7 +326,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                            Err(err) => {
                                match err {
-                                    pgcat::errors::Error::ClientBadStartup => debug!("Client disconnected with error {:?}", err),
+                                    errors::Error::ClientBadStartup => debug!("Client disconnected with error {:?}", err),
                                    _ => warn!("Client disconnected with error {:?}", err),
                                }
--- a/src/messages.rs
+++ b/src/messages.rs
@@ -20,10 +20,6 @@ pub enum DataType {
    Text,
    Int4,
    Numeric,
    Bool,
    Oid,
    AnyArray,
    Any,
 }
 impl From<&DataType> for i32 {
@@ -32,10 +28,6 @@ impl From<&DataType> for i32 {
            DataType::Text => 25,
            DataType::Int4 => 23,
            DataType::Numeric => 1700,
            DataType::Bool => 16,
            DataType::Oid => 26,
            DataType::AnyArray => 2277,
            DataType::Any => 2276,
        }
    }
 }
@@ -451,10 +443,6 @@ pub fn row_description(columns: &Vec<(&str, DataType)>) -> BytesMut {
            DataType::Text => -1,
            DataType::Int4 => 4,
            DataType::Numeric => -1,
            DataType::Bool => 1,
            DataType::Oid => 4,
            DataType::AnyArray => -1,
            DataType::Any => -1,
        };
        row_desc.put_i16(type_size);
@@ -493,29 +481,6 @@ pub fn data_row(row: &Vec<String>) -> BytesMut {
    res
 }
 pub fn data_row_nullable(row: &Vec<Option<String>>) -> BytesMut {
    let mut res = BytesMut::new();
    let mut data_row = BytesMut::new();
    data_row.put_i16(row.len() as i16);
    for column in row {
        if let Some(column) = column {
            let column = column.as_bytes();
            data_row.put_i32(column.len() as i32);
            data_row.put_slice(column);
        } else {
            data_row.put_i32(-1 as i32);
        }
    }
    res.put_u8(b'D');
    res.put_i32(data_row.len() as i32 + 4);
    res.put(data_row);
    res
 }
 /// Create a CommandComplete message.
 pub fn command_complete(command: &str) -> BytesMut {
    let cmd = BytesMut::from(format!("{}\0", command).as_bytes());
--- a/src/mirrors.rs
+++ b/src/mirrors.rs
@@ -43,7 +43,6 @@ impl MirroredClient {
            ClientServerMap::default(),
            Arc::new(PoolStats::new(identifier, cfg.clone())),
            Arc::new(RwLock::new(None)),
            None,
        );
        Pool::builder()
--- a/src/plugins/intercept.rs
+++ b/src/plugins/intercept.rs
@@ -1,120 +0,0 @@
 //! The intercept plugin.
 //!
 //! It intercepts queries and returns fake results.
 use async_trait::async_trait;
 use bytes::{BufMut, BytesMut};
 use serde::{Deserialize, Serialize};
 use sqlparser::ast::Statement;
 use log::debug;
 use crate::{
    config::Intercept as InterceptConfig,
    errors::Error,
    messages::{command_complete, data_row_nullable, row_description, DataType},
    plugins::{Plugin, PluginOutput},
    query_router::QueryRouter,
 };
 // TODO: use these structs for deserialization
 #[derive(Serialize, Deserialize)]
 pub struct Rule {
    query: String,
    schema: Vec<Column>,
    result: Vec<Vec<String>>,
 }
 #[derive(Serialize, Deserialize)]
 pub struct Column {
    name: String,
    data_type: String,
 }
 /// The intercept plugin.
 pub struct Intercept<'a> {
    pub enabled: bool,
    pub config: &'a InterceptConfig,
 }
 #[async_trait]
 impl<'a> Plugin for Intercept<'a> {
    async fn run(
        &mut self,
        query_router: &QueryRouter,
        ast: &Vec<Statement>,
    ) -> Result<PluginOutput, Error> {
        if !self.enabled || ast.is_empty() {
            return Ok(PluginOutput::Allow);
        }
        let mut config = self.config.clone();
        config.substitute(
            &query_router.pool_settings().db,
            &query_router.pool_settings().user.username,
        );
        let mut result = BytesMut::new();
        for q in ast {
            // Normalization
            let q = q.to_string().to_ascii_lowercase();
            for (_, target) in config.queries.iter() {
                if target.query.as_str() == q {
                    debug!("Intercepting query: {}", q);
                    let rd = target
                        .schema
                        .iter()
                        .map(|row| {
                            let name = &row[0];
                            let data_type = &row[1];
                            (
                                name.as_str(),
                                match data_type.as_str() {
                                    "text" => DataType::Text,
                                    "anyarray" => DataType::AnyArray,
                                    "oid" => DataType::Oid,
                                    "bool" => DataType::Bool,
                                    "int4" => DataType::Int4,
                                    _ => DataType::Any,
                                },
                            )
                        })
                        .collect::<Vec<(&str, DataType)>>();
                    result.put(row_description(&rd));
                    target.result.iter().for_each(|row| {
                        let row = row
                            .iter()
                            .map(|s| {
                                let s = s.as_str().to_string();
                                if s == "" {
                                    None
                                } else {
                                    Some(s)
                                }
                            })
                            .collect::<Vec<Option<String>>>();
                        result.put(data_row_nullable(&row));
                    });
                    result.put(command_complete("SELECT"));
                }
            }
        }
        if !result.is_empty() {
            result.put_u8(b'Z');
            result.put_i32(5);
            result.put_u8(b'I');
            return Ok(PluginOutput::Intercept(result));
        } else {
            Ok(PluginOutput::Allow)
        }
    }
 }
--- a/src/plugins/mod.rs
+++ b/src/plugins/mod.rs
@@ -1,44 +0,0 @@
 //! The plugin ecosystem.
 //!
 //! Currently plugins only grant access or deny access to the database for a particual query.
 //! Example use cases:
 //!   - block known bad queries
 //!   - block access to system catalogs
 //!   - block dangerous modifications like `DROP TABLE`
 //!   - etc
 //!
 pub mod intercept;
 pub mod prewarmer;
 pub mod query_logger;
 pub mod table_access;
 use crate::{errors::Error, query_router::QueryRouter};
 use async_trait::async_trait;
 use bytes::BytesMut;
 use sqlparser::ast::Statement;
 pub use intercept::Intercept;
 pub use query_logger::QueryLogger;
 pub use table_access::TableAccess;
 #[derive(Clone, Debug, PartialEq)]
 pub enum PluginOutput {
    Allow,
    Deny(String),
    Overwrite(Vec<Statement>),
    Intercept(BytesMut),
 }
 #[async_trait]
 pub trait Plugin {
    // Run before the query is sent to the server.
    async fn run(
        &mut self,
        query_router: &QueryRouter,
        ast: &Vec<Statement>,
    ) -> Result<PluginOutput, Error>;
    // TODO: run after the result is returned
    // async fn callback(&mut self, query_router: &QueryRouter);
 }
--- a/src/plugins/prewarmer.rs
+++ b/src/plugins/prewarmer.rs
@@ -1,28 +0,0 @@
 //! Prewarm new connections before giving them to the client.
 use crate::{errors::Error, server::Server};
 use log::info;
 pub struct Prewarmer<'a> {
    pub enabled: bool,
    pub server: &'a mut Server,
    pub queries: &'a Vec<String>,
 }
 impl<'a> Prewarmer<'a> {
    pub async fn run(&mut self) -> Result<(), Error> {
        if !self.enabled {
            return Ok(());
        }
        for query in self.queries {
            info!(
                "{} Prewarning with query: `{}`",
                self.server.address(),
                query
            );
            self.server.query(&query).await?;
        }
        Ok(())
    }
 }
--- a/src/plugins/query_logger.rs
+++ b/src/plugins/query_logger.rs
@@ -1,38 +0,0 @@
 //! Log all queries to stdout (or somewhere else, why not).
 use crate::{
    errors::Error,
    plugins::{Plugin, PluginOutput},
    query_router::QueryRouter,
 };
 use async_trait::async_trait;
 use log::info;
 use sqlparser::ast::Statement;
 pub struct QueryLogger<'a> {
    pub enabled: bool,
    pub user: &'a str,
    pub db: &'a str,
 }
 #[async_trait]
 impl<'a> Plugin for QueryLogger<'a> {
    async fn run(
        &mut self,
        _query_router: &QueryRouter,
        ast: &Vec<Statement>,
    ) -> Result<PluginOutput, Error> {
        if !self.enabled {
            return Ok(PluginOutput::Allow);
        }
        let query = ast
            .iter()
            .map(|q| q.to_string())
            .collect::<Vec<String>>()
            .join("; ");
        info!("[pool: {}][user: {}] {}", self.user, self.db, query);
        Ok(PluginOutput::Allow)
    }
 }
--- a/src/plugins/table_access.rs
+++ b/src/plugins/table_access.rs
@@ -1,59 +0,0 @@
 //! This query router plugin will check if the user can access a particular
 //! table as part of their query. If they can't, the query will not be routed.
 use async_trait::async_trait;
 use sqlparser::ast::{visit_relations, Statement};
 use crate::{
    errors::Error,
    plugins::{Plugin, PluginOutput},
    query_router::QueryRouter,
 };
 use log::debug;
 use core::ops::ControlFlow;
 pub struct TableAccess<'a> {
    pub enabled: bool,
    pub tables: &'a Vec<String>,
 }
 #[async_trait]
 impl<'a> Plugin for TableAccess<'a> {
    async fn run(
        &mut self,
        _query_router: &QueryRouter,
        ast: &Vec<Statement>,
    ) -> Result<PluginOutput, Error> {
        if !self.enabled {
            return Ok(PluginOutput::Allow);
        }
        let mut found = None;
        visit_relations(ast, |relation| {
            let relation = relation.to_string();
            let parts = relation.split(".").collect::<Vec<&str>>();
            let table_name = parts.last().unwrap();
            if self.tables.contains(&table_name.to_string()) {
                found = Some(table_name.to_string());
                ControlFlow::<()>::Break(())
            } else {
                ControlFlow::<()>::Continue(())
            }
        });
        if let Some(found) = found {
            debug!("Blocking access to table \"{}\"", found);
            Ok(PluginOutput::Deny(format!(
                "permission for table \"{}\" denied",
                found
            )))
        } else {
            Ok(PluginOutput::Allow)
        }
    }
 }
--- a/src/pool.rs
+++ b/src/pool.rs
@@ -17,13 +17,10 @@ use std::sync::{
 use std::time::Instant;
 use tokio::sync::Notify;
-use crate::config::{
+use crate::config::{get_config, Address, General, LoadBalancingMode, PoolMode, Role, User};
    get_config, Address, General, LoadBalancingMode, Plugins, PoolMode, Role, User,
 };
 use crate::errors::Error;
 use crate::auth_passthrough::AuthPassthrough;
 use crate::plugins::prewarmer;
 use crate::server::Server;
 use crate::sharding::ShardingFunction;
 use crate::stats::{AddressStats, ClientStats, PoolStats, ServerStats};
@@ -64,8 +61,6 @@ pub struct PoolIdentifier {
    pub user: String,
 }
 static POOL_REAPER_RATE: u64 = 30_000; // 30 seconds by default
 impl PoolIdentifier {
    /// Create a new user/pool identifier.
    pub fn new(db: &str, user: &str) -> PoolIdentifier {
@@ -96,7 +91,6 @@ pub struct PoolSettings {
    // Connecting user.
    pub user: User,
    pub db: String,
    // Default server role to connect to.
    pub default_role: Option<Role>,
@@ -135,9 +129,6 @@ pub struct PoolSettings {
    pub auth_query: Option<String>,
    pub auth_query_user: Option<String>,
    pub auth_query_password: Option<String>,
    /// Plugins
    pub plugins: Option<Plugins>,
 }
 impl Default for PoolSettings {
@@ -147,7 +138,6 @@ impl Default for PoolSettings {
            load_balancing_mode: LoadBalancingMode::Random,
            shards: 1,
            user: User::default(),
            db: String::default(),
            default_role: None,
            query_parser_enabled: false,
            primary_reads_enabled: true,
@@ -162,7 +152,6 @@ impl Default for PoolSettings {
            auth_query: None,
            auth_query_user: None,
            auth_query_password: None,
            plugins: None,
        }
    }
 }
@@ -202,7 +191,6 @@ pub struct ConnectionPool {
    paused: Arc<AtomicBool>,
    paused_waiter: Arc<Notify>,
    /// Statistics.
    pub stats: Arc<PoolStats>,
    /// AuthInfo
@@ -360,10 +348,6 @@ impl ConnectionPool {
                            client_server_map.clone(),
                            pool_stats.clone(),
                            pool_auth_hash.clone(),
                            match pool_config.plugins {
                                Some(ref plugins) => Some(plugins.clone()),
                                None => config.plugins.clone(),
                            },
                        );
                        let connect_timeout = match pool_config.connect_timeout {
@@ -384,30 +368,15 @@ impl ConnectionPool {
                            },
                        };
                        let reaper_rate = *vec![idle_timeout, server_lifetime, POOL_REAPER_RATE]
                            .iter()
                            .min()
                            .unwrap();
                        debug!(
                            "[pool: {}][user: {}] Pool reaper rate: {}ms",
                            pool_name, user.username, reaper_rate
                        );
                        let pool = Pool::builder()
                            .max_size(user.pool_size)
                            .min_idle(user.min_pool_size)
                            .connection_timeout(std::time::Duration::from_millis(connect_timeout))
                            .idle_timeout(Some(std::time::Duration::from_millis(idle_timeout)))
                            .max_lifetime(Some(std::time::Duration::from_millis(server_lifetime)))
-                            .reaper_rate(std::time::Duration::from_millis(reaper_rate))
+                            .test_on_check_out(false)
-                            .test_on_check_out(false);
+                            .build(manager)
-
+                            .await?;
                        let pool = if config.general.validate_config {
                            pool.build(manager).await?
                        } else {
                            pool.build_unchecked(manager)
                        };
                        pools.push(pool);
                        servers.push(address);
@@ -443,7 +412,6 @@ impl ConnectionPool {
                        // shards: pool_config.shards.clone(),
                        shards: shard_ids.len(),
                        user: user.clone(),
                        db: pool_name.clone(),
                        default_role: match pool_config.default_role.as_str() {
                            "any" => None,
                            "replica" => Some(Role::Replica),
@@ -469,10 +437,6 @@ impl ConnectionPool {
                        auth_query: pool_config.auth_query.clone(),
                        auth_query_user: pool_config.auth_query_user.clone(),
                        auth_query_password: pool_config.auth_query_password.clone(),
                        plugins: match pool_config.plugins {
                            Some(ref plugins) => Some(plugins.clone()),
                            None => config.plugins.clone(),
                        },
                    },
                    validated: Arc::new(AtomicBool::new(false)),
                    paused: Arc::new(AtomicBool::new(false)),
@@ -482,12 +446,10 @@ impl ConnectionPool {
                // Connect to the servers to make sure pool configuration is valid
                // before setting it globally.
                // Do this async and somewhere else, we don't have to wait here.
-                if config.general.validate_config {
+                let mut validate_pool = pool.clone();
-                    let mut validate_pool = pool.clone();
+                tokio::task::spawn(async move {
-                    tokio::task::spawn(async move {
+                    let _ = validate_pool.validate().await;
-                        let _ = validate_pool.validate().await;
+                });
                    });
                }
                // There is one pool per database/user pair.
                new_pools.insert(PoolIdentifier::new(pool_name, &user.username), pool);
@@ -638,10 +600,7 @@ impl ConnectionPool {
            {
                Ok(conn) => conn,
                Err(err) => {
-                    error!(
+                    error!("Banning instance {:?}, error: {:?}", address, err);
                        "Connection checkout error for instance {:?}, error: {:?}",
                        address, err
                    );
                    self.ban(address, BanReason::FailedCheckout, Some(client_stats));
                    address.stats.error();
                    client_stats.idle();
@@ -717,7 +676,7 @@ impl ConnectionPool {
                // Health check failed.
                Err(err) => {
                    error!(
-                        "Failed health check on instance {:?}, error: {:?}",
+                        "Banning instance {:?} because of failed health check, {:?}",
                        address, err
                    );
                }
@@ -726,7 +685,7 @@ impl ConnectionPool {
            // Health check timed out.
            Err(err) => {
                error!(
-                    "Health check timeout on instance {:?}, error: {:?}",
+                    "Banning instance {:?} because of health check timeout, {:?}",
                    address, err
                );
            }
@@ -748,16 +707,13 @@ impl ConnectionPool {
            return;
        }
        error!("Banning instance {:?}, reason: {:?}", address, reason);
        let now = chrono::offset::Utc::now().naive_utc();
        let mut guard = self.banlist.write();
-
+        error!("Banning {:?}", address);
        if let Some(client_info) = client_info {
            client_info.ban_error();
            address.stats.error();
        }
        guard[address.shard].insert(address.clone(), (reason, now));
    }
@@ -920,7 +876,6 @@ pub struct ServerPool {
    client_server_map: ClientServerMap,
    stats: Arc<PoolStats>,
    auth_hash: Arc<RwLock<Option<String>>>,
    plugins: Option<Plugins>,
 }
 impl ServerPool {
@@ -931,7 +886,6 @@ impl ServerPool {
        client_server_map: ClientServerMap,
        stats: Arc<PoolStats>,
        auth_hash: Arc<RwLock<Option<String>>>,
        plugins: Option<Plugins>,
    ) -> ServerPool {
        ServerPool {
            address,
@@ -940,7 +894,6 @@ impl ServerPool {
            client_server_map,
            stats,
            auth_hash,
            plugins,
        }
    }
 }
@@ -973,19 +926,7 @@ impl ManageConnection for ServerPool {
        )
        .await
        {
-            Ok(mut conn) => {
+            Ok(conn) => {
                if let Some(ref plugins) = self.plugins {
                    if let Some(ref prewarmer) = plugins.prewarmer {
                        let mut prewarmer = prewarmer::Prewarmer {
                            enabled: prewarmer.enabled,
                            server: &mut conn,
                            queries: &prewarmer.queries,
                        };
                        prewarmer.run().await?;
                    }
                }
                stats.idle();
                Ok(conn)
            }
--- a/src/query_router.rs
+++ b/src/query_router.rs
@@ -6,16 +6,13 @@ use once_cell::sync::OnceCell;
 use regex::{Regex, RegexSet};
 use sqlparser::ast::Statement::{Query, StartTransaction};
 use sqlparser::ast::{
-    BinaryOperator, Expr, Ident, JoinConstraint, JoinOperator, SetExpr, Statement, TableFactor,
+    BinaryOperator, Expr, Ident, JoinConstraint, JoinOperator, SetExpr, TableFactor, Value,
    Value,
 };
 use sqlparser::dialect::PostgreSqlDialect;
 use sqlparser::parser::Parser;
 use crate::config::Role;
 use crate::errors::Error;
 use crate::messages::BytesMutReader;
 use crate::plugins::{Intercept, Plugin, PluginOutput, QueryLogger, TableAccess};
 use crate::pool::PoolSettings;
 use crate::sharding::Sharder;
@@ -132,10 +129,6 @@ impl QueryRouter {
        self.pool_settings = pool_settings;
    }
    pub fn pool_settings<'a>(&'a self) -> &'a PoolSettings {
        &self.pool_settings
    }
    /// Try to parse a command and execute it.
    pub fn try_execute_command(&mut self, message_buffer: &BytesMut) -> Option<(Command, String)> {
        let mut message_cursor = Cursor::new(message_buffer);
@@ -331,7 +324,10 @@ impl QueryRouter {
        Some((command, value))
    }
-    pub fn parse(message: &BytesMut) -> Result<Vec<sqlparser::ast::Statement>, Error> {
+    /// Try to infer which server to connect to based on the contents of the query.
    pub fn infer(&mut self, message: &BytesMut) -> bool {
        debug!("Inferring role");
        let mut message_cursor = Cursor::new(message);
        let code = message_cursor.get_u8() as char;
@@ -357,29 +353,28 @@ impl QueryRouter {
                query
            }
-            _ => return Err(Error::UnsupportedStatement),
+            _ => return false,
        };
-        match Parser::parse_sql(&PostgreSqlDialect {}, &query) {
+        let ast = match Parser::parse_sql(&PostgreSqlDialect {}, &query) {
-            Ok(ast) => Ok(ast),
+            Ok(ast) => ast,
            Err(err) => {
                // SELECT ... FOR UPDATE won't get parsed correctly.
                debug!("{}: {}", err, query);
-                Err(Error::QueryRouterParserError(err.to_string()))
+                self.active_role = Some(Role::Primary);
                return false;
            }
-        }
+        };
    }
-    /// Try to infer which server to connect to based on the contents of the query.
+        debug!("AST: {:?}", ast);
    pub fn infer(&mut self, ast: &Vec<sqlparser::ast::Statement>) -> Result<(), Error> {
        debug!("Inferring role");
        if ast.is_empty() {
            // That's weird, no idea, let's go to primary
            self.active_role = Some(Role::Primary);
-            return Err(Error::QueryRouterParserError("empty query".into()));
+            return false;
        }
-        for q in ast {
+        for q in &ast {
            match q {
                // All transactions go to the primary, probably a write.
                StartTransaction { .. } => {
@@ -423,7 +418,7 @@ impl QueryRouter {
            };
        }
-        Ok(())
+        true
    }
    /// Parse the shard number from the Bind message
@@ -788,52 +783,6 @@ impl QueryRouter {
        }
    }
    /// Add your plugins here and execute them.
    pub async fn execute_plugins(&self, ast: &Vec<Statement>) -> Result<PluginOutput, Error> {
        let plugins = match self.pool_settings.plugins {
            Some(ref plugins) => plugins,
            None => return Ok(PluginOutput::Allow),
        };
        if let Some(ref query_logger) = plugins.query_logger {
            let mut query_logger = QueryLogger {
                enabled: query_logger.enabled,
                user: &self.pool_settings.user.username,
                db: &self.pool_settings.db,
            };
            let _ = query_logger.run(&self, ast).await;
        }
        if let Some(ref intercept) = plugins.intercept {
            let mut intercept = Intercept {
                enabled: intercept.enabled,
                config: &intercept,
            };
            let result = intercept.run(&self, ast).await;
            if let Ok(PluginOutput::Intercept(output)) = result {
                return Ok(PluginOutput::Intercept(output));
            }
        }
        if let Some(ref table_access) = plugins.table_access {
            let mut table_access = TableAccess {
                enabled: table_access.enabled,
                tables: &table_access.tables,
            };
            let result = table_access.run(&self, ast).await;
            if let Ok(PluginOutput::Deny(error)) = result {
                return Ok(PluginOutput::Deny(error));
            }
        }
        Ok(PluginOutput::Allow)
    }
    fn set_sharding_key(&mut self, sharding_key: i64) -> Option<usize> {
        let sharder = Sharder::new(
            self.pool_settings.shards,
@@ -861,23 +810,12 @@ impl QueryRouter {
    /// Should we attempt to parse queries?
    pub fn query_parser_enabled(&self) -> bool {
        let enabled = match self.query_parser_enabled {
-            None => {
+            None => self.pool_settings.query_parser_enabled,
-                debug!(
+            Some(value) => value,
                    "Using pool settings, query_parser_enabled: {}",
                    self.pool_settings.query_parser_enabled
                );
                self.pool_settings.query_parser_enabled
            }
            Some(value) => {
                debug!(
                    "Using query parser override, query_parser_enabled: {}",
                    value
                );
                value
            }
        };
        debug!("Query parser enabled: {}", enabled);
        enabled
    }
@@ -924,7 +862,7 @@ mod test {
        for query in queries {
            // It's a recognized query
-            assert!(qr.infer(&QueryRouter::parse(&query).unwrap()).is_ok());
+            assert!(qr.infer(&query));
            assert_eq!(qr.role(), Some(Role::Replica));
        }
    }
@@ -943,7 +881,7 @@ mod test {
        for query in queries {
            // It's a recognized query
-            assert!(qr.infer(&QueryRouter::parse(&query).unwrap()).is_ok());
+            assert!(qr.infer(&query));
            assert_eq!(qr.role(), Some(Role::Primary));
        }
    }
@@ -955,7 +893,7 @@ mod test {
        let query = simple_query("SELECT * FROM items WHERE id = 5");
        assert!(qr.try_execute_command(&simple_query("SET PRIMARY READS TO on")) != None);
-        assert!(qr.infer(&QueryRouter::parse(&query).unwrap()).is_ok());
+        assert!(qr.infer(&query));
        assert_eq!(qr.role(), None);
    }
@@ -975,7 +913,7 @@ mod test {
        res.put(prepared_stmt);
        res.put_i16(0);
-        assert!(qr.infer(&QueryRouter::parse(&res).unwrap()).is_ok());
+        assert!(qr.infer(&res));
        assert_eq!(qr.role(), Some(Role::Replica));
    }
@@ -1139,11 +1077,11 @@ mod test {
        assert_eq!(qr.role(), None);
        let query = simple_query("INSERT INTO test_table VALUES (1)");
-        assert!(qr.infer(&QueryRouter::parse(&query).unwrap()).is_ok());
+        assert!(qr.infer(&query));
        assert_eq!(qr.role(), Some(Role::Primary));
        let query = simple_query("SELECT * FROM test_table");
-        assert!(qr.infer(&QueryRouter::parse(&query).unwrap()).is_ok());
+        assert!(qr.infer(&query));
        assert_eq!(qr.role(), Some(Role::Replica));
        assert!(qr.query_parser_enabled());
@@ -1175,8 +1113,6 @@ mod test {
            auth_query: None,
            auth_query_password: None,
            auth_query_user: None,
            db: "test".to_string(),
            plugins: None,
        };
        let mut qr = QueryRouter::new();
        assert_eq!(qr.active_role, None);
@@ -1206,24 +1142,15 @@ mod test {
        QueryRouter::setup();
        let mut qr = QueryRouter::new();
-        assert!(qr
+        assert!(qr.infer(&simple_query("BEGIN; SELECT 1; COMMIT;")));
            .infer(&QueryRouter::parse(&simple_query("BEGIN; SELECT 1; COMMIT;")).unwrap())
            .is_ok());
        assert_eq!(qr.role(), Role::Primary);
-        assert!(qr
+        assert!(qr.infer(&simple_query("SELECT 1; SELECT 2;")));
            .infer(&QueryRouter::parse(&simple_query("SELECT 1; SELECT 2;")).unwrap())
            .is_ok());
        assert_eq!(qr.role(), Role::Replica);
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            "SELECT 123; INSERT INTO t VALUES (5); SELECT 1;"
-                &QueryRouter::parse(&simple_query(
+        )));
                    "SELECT 123; INSERT INTO t VALUES (5); SELECT 1;"
                ))
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.role(), Role::Primary);
    }
@@ -1250,10 +1177,7 @@ mod test {
            auth_query: None,
            auth_query_password: None,
            auth_query_user: None,
            db: "test".to_string(),
            plugins: None,
        };
        let mut qr = QueryRouter::new();
        qr.update_pool_settings(pool_settings.clone());
@@ -1284,84 +1208,47 @@ mod test {
        qr.pool_settings.automatic_sharding_key = Some("data.id".to_string());
        qr.pool_settings.shards = 3;
-        assert!(qr
+        assert!(qr.infer(&simple_query("SELECT * FROM data WHERE id = 5")));
            .infer(&QueryRouter::parse(&simple_query("SELECT * FROM data WHERE id = 5")).unwrap())
            .is_ok());
        assert_eq!(qr.shard(), 2);
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            "SELECT one, two, three FROM public.data WHERE id = 6"
-                &QueryRouter::parse(&simple_query(
+        )));
                    "SELECT one, two, three FROM public.data WHERE id = 6"
                ))
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 0);
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            "SELECT * FROM data
                &QueryRouter::parse(&simple_query(
                    "SELECT * FROM data
            INNER JOIN t2 ON data.id = 5
            AND t2.data_id = data.id
        WHERE data.id = 5"
-                ))
+        )));
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 2);
        // Shard did not move because we couldn't determine the sharding key since it could be ambiguous
        // in the query.
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            "SELECT * FROM t2 INNER JOIN data ON id = 6 AND data.id = t2.data_id"
-                &QueryRouter::parse(&simple_query(
+        )));
                    "SELECT * FROM t2 INNER JOIN data ON id = 6 AND data.id = t2.data_id"
                ))
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 2);
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            r#"SELECT * FROM "public"."data" WHERE "id" = 6"#
-                &QueryRouter::parse(&simple_query(
+        )));
                    r#"SELECT * FROM "public"."data" WHERE "id" = 6"#
                ))
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 0);
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            r#"SELECT * FROM "public"."data" WHERE "data"."id" = 5"#
-                &QueryRouter::parse(&simple_query(
+        )));
                    r#"SELECT * FROM "public"."data" WHERE "data"."id" = 5"#
                ))
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 2);
        // Super unique sharding key
        qr.pool_settings.automatic_sharding_key = Some("*.unique_enough_column_name".to_string());
-        assert!(qr
+        assert!(qr.infer(&simple_query(
-            .infer(
+            "SELECT * FROM table_x WHERE unique_enough_column_name = 6"
-                &QueryRouter::parse(&simple_query(
+        )));
                    "SELECT * FROM table_x WHERE unique_enough_column_name = 6"
                ))
                .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 0);
-        assert!(qr
+        assert!(qr.infer(&simple_query("SELECT * FROM table_y WHERE another_key = 5")));
            .infer(
                &QueryRouter::parse(&simple_query("SELECT * FROM table_y WHERE another_key = 5"))
                    .unwrap()
            )
            .is_ok());
        assert_eq!(qr.shard(), 0);
    }
@@ -1385,61 +1272,11 @@ mod test {
        qr.pool_settings.automatic_sharding_key = Some("data.id".to_string());
        qr.pool_settings.shards = 3;
-        assert!(qr
+        assert!(qr.infer(&simple_query(stmt)));
            .infer(&QueryRouter::parse(&simple_query(stmt)).unwrap())
            .is_ok());
        assert_eq!(qr.placeholders.len(), 1);
        assert!(qr.infer_shard_from_bind(&bind));
        assert_eq!(qr.shard(), 2);
        assert!(qr.placeholders.is_empty());
    }
    #[tokio::test]
    async fn test_table_access_plugin() {
        use crate::config::{Plugins, TableAccess};
        let table_access = TableAccess {
            enabled: true,
            tables: vec![String::from("pg_database")],
        };
        let plugins = Plugins {
            table_access: Some(table_access),
            intercept: None,
            query_logger: None,
            prewarmer: None,
        };
        QueryRouter::setup();
        let mut pool_settings = PoolSettings::default();
        pool_settings.query_parser_enabled = true;
        pool_settings.plugins = Some(plugins);
        let mut qr = QueryRouter::new();
        qr.update_pool_settings(pool_settings);
        let query = simple_query("SELECT * FROM pg_database");
        let ast = QueryRouter::parse(&query).unwrap();
        let res = qr.execute_plugins(&ast).await;
        assert_eq!(
            res,
            Ok(PluginOutput::Deny(
                "permission for table \"pg_database\" denied".to_string()
            ))
        );
    }
    #[tokio::test]
    async fn test_plugins_disabled_by_defaault() {
        QueryRouter::setup();
        let qr = QueryRouter::new();
        let query = simple_query("SELECT * FROM pg_database");
        let ast = QueryRouter::parse(&query).unwrap();
        let res = qr.execute_plugins(&ast).await;
        assert_eq!(res, Ok(PluginOutput::Allow));
    }
 }
--- a/src/server.rs
+++ b/src/server.rs
@@ -7,7 +7,6 @@ use parking_lot::{Mutex, RwLock};
 use postgres_protocol::message;
 use std::collections::HashMap;
 use std::io::Read;
 use std::net::IpAddr;
 use std::sync::Arc;
 use std::time::SystemTime;
 use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, BufStream};
@@ -17,7 +16,6 @@ use tokio_rustls::{client::TlsStream, TlsConnector};
 use crate::config::{get_config, Address, User};
 use crate::constants::*;
 use crate::dns_cache::{AddrSet, CACHED_RESOLVER};
 use crate::errors::{Error, ServerIdentifier};
 use crate::messages::*;
 use crate::mirrors::MirroringManager;
@@ -103,48 +101,6 @@ impl StreamInner {
    }
 }
 #[derive(Copy, Clone)]
 struct CleanupState {
    /// If server connection requires DISCARD ALL before checkin because of set statement
    needs_cleanup_set: bool,
    /// If server connection requires DISCARD ALL before checkin because of prepare statement
    needs_cleanup_prepare: bool,
 }
 impl CleanupState {
    fn new() -> Self {
        CleanupState {
            needs_cleanup_set: false,
            needs_cleanup_prepare: false,
        }
    }
    fn needs_cleanup(&self) -> bool {
        self.needs_cleanup_set || self.needs_cleanup_prepare
    }
    fn set_true(&mut self) {
        self.needs_cleanup_set = true;
        self.needs_cleanup_prepare = true;
    }
    fn reset(&mut self) {
        self.needs_cleanup_set = false;
        self.needs_cleanup_prepare = false;
    }
 }
 impl std::fmt::Display for CleanupState {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "SET: {}, PREPARE: {}",
            self.needs_cleanup_set, self.needs_cleanup_prepare
        )
    }
 }
 /// Server state.
 pub struct Server {
    /// Server host, e.g. localhost,
@@ -173,8 +129,8 @@ pub struct Server {
    /// Is the server broken? We'll remote it from the pool if so.
    bad: bool,
-    /// If server connection requires DISCARD ALL before checkin
+    /// If server connection requires a DISCARD ALL before checkin
-    cleanup_state: CleanupState,
+    needs_cleanup: bool,
    /// Mapping of clients and servers used for query cancellation.
    client_server_map: ClientServerMap,
@@ -192,9 +148,6 @@ pub struct Server {
    last_activity: SystemTime,
    mirror_manager: Option<MirroringManager>,
    // Associated addresses used
    addr_set: Option<AddrSet>,
 }
 impl Server {
@@ -208,24 +161,6 @@ impl Server {
        stats: Arc<ServerStats>,
        auth_hash: Arc<RwLock<Option<String>>>,
    ) -> Result<Server, Error> {
        let cached_resolver = CACHED_RESOLVER.load();
        let mut addr_set: Option<AddrSet> = None;
        // If we are caching addresses and hostname is not an IP
        if cached_resolver.enabled() && address.host.parse::<IpAddr>().is_err() {
            debug!("Resolving {}", &address.host);
            addr_set = match cached_resolver.lookup_ip(&address.host).await {
                Ok(ok) => {
                    debug!("Obtained: {:?}", ok);
                    Some(ok)
                }
                Err(err) => {
                    warn!("Error trying to resolve {}, ({:?})", &address.host, err);
                    None
                }
            }
        };
        let mut stream =
            match TcpStream::connect(&format!("{}:{}", &address.host, address.port)).await {
                Ok(stream) => stream,
@@ -672,9 +607,8 @@ impl Server {
                        in_transaction: false,
                        data_available: false,
                        bad: false,
-                        cleanup_state: CleanupState::new(),
+                        needs_cleanup: false,
                        client_server_map,
                        addr_set,
                        connected_at: chrono::offset::Utc::now().naive_utc(),
                        stats,
                        application_name: String::new(),
@@ -747,10 +681,7 @@ impl Server {
                Ok(())
            }
            Err(err) => {
-                error!(
+                error!("Terminating server because of: {:?}", err);
                    "Terminating server {:?} because of: {:?}",
                    self.address, err
                );
                self.bad = true;
                Err(err)
            }
@@ -765,10 +696,7 @@ impl Server {
            let mut message = match read_message(&mut self.stream).await {
                Ok(message) => message,
                Err(err) => {
-                    error!(
+                    error!("Terminating server because of: {:?}", err);
                        "Terminating server {:?} because of: {:?}",
                        self.address, err
                    );
                    self.bad = true;
                    return Err(err);
                }
@@ -835,12 +763,12 @@ impl Server {
                                    // This will reduce amount of discard statements sent
                                    if !self.in_transaction {
                                        debug!("Server connection marked for clean up");
-                                        self.cleanup_state.needs_cleanup_set = true;
+                                        self.needs_cleanup = true;
                                    }
                                }
                                "PREPARE\0" => {
                                    debug!("Server connection marked for clean up");
-                                    self.cleanup_state.needs_cleanup_prepare = true;
+                                    self.needs_cleanup = true;
                                }
                                _ => (),
                            }
@@ -921,23 +849,7 @@ impl Server {
    /// Server & client are out of sync, we must discard this connection.
    /// This happens with clients that misbehave.
    pub fn is_bad(&self) -> bool {
-        if self.bad {
+        self.bad
            return self.bad;
        };
        let cached_resolver = CACHED_RESOLVER.load();
        if cached_resolver.enabled() {
            if let Some(addr_set) = &self.addr_set {
                if cached_resolver.has_changed(self.address.host.as_str(), addr_set) {
                    warn!(
                        "DNS changed for {}, it was {:?}. Dropping server connection.",
                        self.address.host.as_str(),
                        addr_set
                    );
                    return true;
                }
            }
        }
        false
    }
    /// Get server startup information to forward it to the client.
@@ -970,8 +882,6 @@ impl Server {
    /// It will use the simple query protocol.
    /// Result will not be returned, so this is useful for things like `SET` or `ROLLBACK`.
    pub async fn query(&mut self, query: &str) -> Result<(), Error> {
        debug!("Running `{}` on server {:?}", query, self.address);
        let query = simple_query(query);
        self.send(&query).await?;
@@ -1004,11 +914,10 @@ impl Server {
        // to avoid leaking state between clients. For performance reasons we only
        // send `DISCARD ALL` if we think the session is altered instead of just sending
        // it before each checkin.
-        if self.cleanup_state.needs_cleanup() {
+        if self.needs_cleanup {
-            warn!("Server returned with session state altered, discarding state ({}) for application {}", self.cleanup_state, self.application_name);
+            warn!("Server returned with session state altered, discarding state");
            self.query("DISCARD ALL").await?;
-            self.query("RESET ROLE").await?;
+            self.needs_cleanup = false;
            self.cleanup_state.reset();
        }
        Ok(())
@@ -1020,12 +929,12 @@ impl Server {
            self.application_name = name.to_string();
            // We don't want `SET application_name` to mark the server connection
            // as needing cleanup
-            let needs_cleanup_before = self.cleanup_state;
+            let needs_cleanup_before = self.needs_cleanup;
            let result = Ok(self
                .query(&format!("SET application_name = '{}'", name))
                .await?);
-            self.cleanup_state = needs_cleanup_before;
+            self.needs_cleanup = needs_cleanup_before;
            result
        } else {
            Ok(())
@@ -1050,7 +959,7 @@ impl Server {
    // Marks a connection as needing DISCARD ALL at checkin
    pub fn mark_dirty(&mut self) {
-        self.cleanup_state.set_true();
+        self.needs_cleanup = true;
    }
    pub fn mirror_send(&mut self, bytes: &BytesMut) {
@@ -1186,18 +1095,14 @@ impl Drop for Server {
            _ => debug!("Dirty shutdown"),
        };
        // Should not matter.
        self.bad = true;
        let now = chrono::offset::Utc::now().naive_utc();
        let duration = now - self.connected_at;
        let message = if self.bad {
            "Server connection terminated"
        } else {
            "Server connection closed"
        };
        info!(
-            "{} {:?}, session duration: {}",
+            "Server connection closed {:?}, session duration: {}",
            message,
            self.address,
            crate::format_duration(&duration)
        );
--- a/src/stats.rs
+++ b/src/stats.rs
@@ -107,19 +107,8 @@ impl Collector {
            loop {
                interval.tick().await;
-                // Hold read lock for duration of update to retain all server stats
+                for stats in SERVER_STATS.read().values() {
-                let server_stats = SERVER_STATS.read();
+                    stats.address_stats().update_averages();
                for stats in server_stats.values() {
                    if !stats.check_address_stat_average_is_updated_status() {
                        stats.address_stats().update_averages();
                        stats.set_address_stat_average_is_updated_status(true);
                    }
                }
                // Reset to false for next update
                for stats in server_stats.values() {
                    stats.set_address_stat_average_is_updated_status(false);
                }
            }
        });
--- a/src/stats/address.rs
+++ b/src/stats/address.rs
@@ -1,3 +1,4 @@
 use log::warn;
 use std::sync::atomic::*;
 use std::sync::Arc;
@@ -12,16 +13,6 @@ pub struct AddressStats {
    pub total_query_time: Arc<AtomicU64>,
    pub total_wait_time: Arc<AtomicU64>,
    pub total_errors: Arc<AtomicU64>,
    pub old_total_xact_count: Arc<AtomicU64>,
    pub old_total_query_count: Arc<AtomicU64>,
    pub old_total_received: Arc<AtomicU64>,
    pub old_total_sent: Arc<AtomicU64>,
    pub old_total_xact_time: Arc<AtomicU64>,
    pub old_total_query_time: Arc<AtomicU64>,
    pub old_total_wait_time: Arc<AtomicU64>,
    pub old_total_errors: Arc<AtomicU64>,
    pub avg_query_count: Arc<AtomicU64>,
    pub avg_query_time: Arc<AtomicU64>,
    pub avg_recv: Arc<AtomicU64>,
@@ -30,9 +21,6 @@ pub struct AddressStats {
    pub avg_xact_time: Arc<AtomicU64>,
    pub avg_xact_count: Arc<AtomicU64>,
    pub avg_wait_time: Arc<AtomicU64>,
    // Determines if the averages have been updated since the last time they were reported
    pub averages_updated: Arc<AtomicBool>,
 }
 impl IntoIterator for AddressStats {
@@ -116,15 +104,16 @@ impl AddressStats {
    }
    pub fn update_averages(&self) {
-        let (totals, averages, old_totals) = self.fields_iterators();
+        let (totals, averages) = self.fields_iterators();
-        for (total, average, old_total) in itertools::izip!(totals, averages, old_totals) {
+        for data in totals.iter().zip(averages.iter()) {
-            let total_value = total.load(Ordering::Relaxed);
+            let (total, average) = data;
-            let old_total_value = old_total.load(Ordering::Relaxed);
+            if let Err(err) = average.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |avg| {
-            average.store(
+                let total = total.load(Ordering::Relaxed);
-                (total_value - old_total_value) / (crate::stats::STAT_PERIOD / 1_000),
+                let avg = (total - avg) / (crate::stats::STAT_PERIOD / 1_000); // Avg / second
-                Ordering::Relaxed,
+                Some(avg)
-            ); // Avg / second
+            }) {
-            old_total.store(total_value, Ordering::Relaxed);
+                warn!("Could not update averages for addresses stats, {:?}", err);
            }
        }
    }
@@ -134,42 +123,27 @@ impl AddressStats {
        }
    }
-    fn fields_iterators(
+    fn fields_iterators(&self) -> (Vec<Arc<AtomicU64>>, Vec<Arc<AtomicU64>>) {
        &self,
    ) -> (
        Vec<Arc<AtomicU64>>,
        Vec<Arc<AtomicU64>>,
        Vec<Arc<AtomicU64>>,
    ) {
        let mut totals: Vec<Arc<AtomicU64>> = Vec::new();
        let mut averages: Vec<Arc<AtomicU64>> = Vec::new();
        let mut old_totals: Vec<Arc<AtomicU64>> = Vec::new();
        totals.push(self.total_xact_count.clone());
        old_totals.push(self.old_total_xact_count.clone());
        averages.push(self.avg_xact_count.clone());
        totals.push(self.total_query_count.clone());
        old_totals.push(self.old_total_query_count.clone());
        averages.push(self.avg_query_count.clone());
        totals.push(self.total_received.clone());
        old_totals.push(self.old_total_received.clone());
        averages.push(self.avg_recv.clone());
        totals.push(self.total_sent.clone());
        old_totals.push(self.old_total_sent.clone());
        averages.push(self.avg_sent.clone());
        totals.push(self.total_xact_time.clone());
        old_totals.push(self.old_total_xact_time.clone());
        averages.push(self.avg_xact_time.clone());
        totals.push(self.total_query_time.clone());
        old_totals.push(self.old_total_query_time.clone());
        averages.push(self.avg_query_time.clone());
        totals.push(self.total_wait_time.clone());
        old_totals.push(self.old_total_wait_time.clone());
        averages.push(self.avg_wait_time.clone());
        totals.push(self.total_errors.clone());
        old_totals.push(self.old_total_errors.clone());
        averages.push(self.avg_errors.clone());
-        (totals, averages, old_totals)
+        (totals, averages)
    }
 }
--- a/src/stats/server.rs
+++ b/src/stats/server.rs
@@ -139,17 +139,6 @@ impl ServerStats {
        self.address.stats.clone()
    }
    pub fn check_address_stat_average_is_updated_status(&self) -> bool {
        self.address.stats.averages_updated.load(Ordering::Relaxed)
    }
    pub fn set_address_stat_average_is_updated_status(&self, is_checked: bool) {
        self.address
            .stats
            .averages_updated
            .store(is_checked, Ordering::Relaxed);
    }
    // Helper methods for show_servers
    pub fn pool_name(&self) -> String {
        self.pool_stats.database()
--- a/tests/ruby/admin_spec.rb
+++ b/tests/ruby/admin_spec.rb
@@ -14,12 +14,11 @@ describe "Admin" do
  describe "SHOW STATS" do
    context "clients connect and make one query" do
      it "updates *_query_time and *_wait_time" do
-        connections = Array.new(3) { PG::connect("#{pgcat_conn_str}?application_name=one_query") }
+        connection = PG::connect("#{pgcat_conn_str}?application_name=one_query")
-        connections.each do |c|
+        connection.async_exec("SELECT pg_sleep(0.25)")
-          Thread.new { c.async_exec("SELECT pg_sleep(0.25)") }
+        connection.async_exec("SELECT pg_sleep(0.25)")
-        end
+        connection.async_exec("SELECT pg_sleep(0.25)")
-        sleep(1)
+        connection.close
        connections.map(&:close)
        # wait for averages to be calculated, we shouldn't do this too often
        sleep(15.5)
@@ -27,7 +26,7 @@ describe "Admin" do
        results = admin_conn.async_exec("SHOW STATS")[0]
        admin_conn.close
        expect(results["total_query_time"].to_i).to be_within(200).of(750)
-        expect(results["avg_query_time"].to_i).to be_within(20).of(50)
+        expect(results["avg_query_time"].to_i).to_not eq(0)
        expect(results["total_wait_time"].to_i).to_not eq(0)
        expect(results["avg_wait_time"].to_i).to_not eq(0)
@@ -72,17 +71,15 @@ describe "Admin" do
    context "client connects but issues no queries" do
      it "only affects cl_idle stats" do
        admin_conn = PG::connect(processes.pgcat.admin_connection_string)
        before_test = admin_conn.async_exec("SHOW POOLS")[0]["sv_idle"]
        connections = Array.new(20) { PG::connect(pgcat_conn_str) }
        sleep(1)
        admin_conn = PG::connect(processes.pgcat.admin_connection_string)
        results = admin_conn.async_exec("SHOW POOLS")[0]
        %w[cl_active cl_waiting cl_cancel_req sv_active sv_used sv_tested sv_login maxwait].each do |s|
          raise StandardError, "Field #{s} was expected to be 0 but found to be #{results[s]}" if results[s] != "0"
        end
        expect(results["cl_idle"]).to eq("20")
-        expect(results["sv_idle"]).to eq(before_test)
+        expect(results["sv_idle"]).to eq("1")
        connections.map(&:close)
        sleep(1.1)
@@ -90,7 +87,7 @@ describe "Admin" do
        %w[cl_active cl_idle cl_waiting cl_cancel_req sv_active sv_used sv_tested sv_login maxwait].each do |s|
          raise StandardError, "Field #{s} was expected to be 0 but found to be #{results[s]}" if results[s] != "0"
        end
-        expect(results["sv_idle"]).to eq(before_test)
+        expect(results["sv_idle"]).to eq("1")
      end
    end
--- a/tests/ruby/helpers/pgcat_helper.rb
+++ b/tests/ruby/helpers/pgcat_helper.rb
@@ -41,24 +41,7 @@ module Helpers
            "1" => { "database" => "shard1", "servers" => [["localhost", primary1.port.to_s, "primary"]] },
            "2" => { "database" => "shard2", "servers" => [["localhost", primary2.port.to_s, "primary"]] },
          },
-          "users" => { "0" => user },
+          "users" => { "0" => user }
          "plugins" => {
            "intercept" => {
              "enabled" => true,
              "queries" => {
                "0" => {
                  "query" => "select current_database() as a, current_schemas(false) as b",
                  "schema" => [
                      ["a", "text"],
                      ["b", "text"],
                  ],
                  "result" => [
                    ["${DATABASE}", "{public}"],
                  ]
                }
              }
            }
          }
        }
      }
      pgcat.update_config(pgcat_cfg)
--- a/tests/ruby/misc_spec.rb
+++ b/tests/ruby/misc_spec.rb
@@ -241,18 +241,6 @@ describe "Miscellaneous" do
        expect(processes.primary.count_query("DISCARD ALL")).to eq(10)
      end
      it "Resets server roles correctly" do
        10.times do
          conn = PG::connect(processes.pgcat.connection_string("sharded_db", "sharding_user"))
          conn.async_exec("SET SERVER ROLE to 'primary'")
          conn.async_exec("SELECT 1")
          conn.async_exec("SET statement_timeout to 5000")
          conn.close
        end
        expect(processes.primary.count_query("RESET ROLE")).to eq(10)
      end 
    end
    context "transaction mode" do
--- a/tests/ruby/plugins_spec.rb
+++ b/tests/ruby/plugins_spec.rb
@@ -1,14 +0,0 @@
 require_relative 'spec_helper'
 describe "Plugins" do
  let(:processes) { Helpers::Pgcat.three_shard_setup("sharded_db", 5) }
  context "intercept" do
    it "will intercept an intellij query" do
      conn = PG.connect(processes.pgcat.connection_string("sharded_db", "sharding_user"))
      res = conn.exec("select current_database() as a, current_schemas(false) as b")
      expect(res.values).to eq([["sharded_db", "{public}"]])
    end
  end
 end
Author	SHA1	Message	Date
Lev Kokotov	ee23b374ae	fetch config once	2023-04-30 09:19:39 -07:00
Lev Kokotov	9dffebccbf	remove unused error	2023-04-30 09:07:15 -07:00
Lev Kokotov	4c8358b8b3	skip flakey test	2023-04-30 09:03:32 -07:00
Lev Kokotov	f0d1916a98	dirty shutdown	2023-04-30 08:23:30 -07:00
Lev Kokotov	bba5f10be1	maybe?	2023-04-29 08:38:27 -07:00
Lev Kokotov	a514dbc187	remove dead code	2023-04-28 18:08:20 -07:00
Lev Kokotov	d660e3e565	diff	2023-04-28 18:06:11 -07:00
Lev Kokotov	0d882cc204	thats it	2023-04-28 18:05:28 -07:00
Lev Kokotov	b36746a47b	Finish up TLS	2023-04-28 18:02:48 -07:00
Lev Kokotov	9e51b8110f	Server TLS	2023-04-28 11:20:49 -07:00