Enabled prepared statements in test pgcat

.circleci/run_tests.sh

@@ -26,7 +26,6 @@ PGPASSWORD=sharding_user pgbench -h 127.0.0.1 -U sharding_user shard1 -i
 PGPASSWORD=sharding_user pgbench -h 127.0.0.1 -U sharding_user shard2 -i
 
 # Start Toxiproxy
-kill -9 $(pgrep toxiproxy) || true
 LOG_LEVEL=error toxiproxy-server &
 sleep 1
 
@@ -107,7 +106,7 @@ cd ../..
 # These tests will start and stop the pgcat server so it will need to be restarted after the tests
 #
 pip3 install -r tests/python/requirements.txt
-pytest || exit 1
+python3 tests/python/tests.py || exit 1
 
 
 #
@@ -178,6 +177,3 @@ killall pgcat -s SIGINT
 
 # Allow for graceful shutdown
 sleep 1
-
-kill -9 $(pgrep toxiproxy)
-sleep 1

.github/workflows/chart-lint-test.yaml

@@ -22,7 +22,7 @@ jobs:
       # Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
       # yamllint (https://github.com/adrienverge/yamllint) which require Python
       - name: Set up Python
-        uses: actions/setup-python@v5.1.0
+        uses: actions/setup-python@v4.1.0
         with:
           python-version: 3.7
 
@@ -43,7 +43,7 @@ jobs:
         run: ct lint --config ct.yaml
 
       - name: Create kind cluster
-        uses: helm/kind-action@v1.10.0
+        uses: helm/kind-action@v1.7.0
         if: steps.list-changed.outputs.changed == 'true'
 
       - name: Run chart-testing (install)

.github/workflows/publish-deb-package.yml

@@ -1,9 +1,6 @@
 name: pgcat package (deb)
 
 on:
-  push:
-    tags:
-      - v*
   workflow_dispatch:
     inputs:
       packageVersion:
@@ -19,14 +16,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - name: Set package version
-      if: github.event_name == 'push'  # For push event
-      run: |
-        TAG=${{ github.ref_name }}
-        echo "packageVersion=${TAG#v}" >> "$GITHUB_ENV"
-    - name: Set package version (manual dispatch)
-      if: github.event_name == 'workflow_dispatch'  # For manual dispatch
-      run: echo "packageVersion=${{ github.event.inputs.packageVersion }}" >> "$GITHUB_ENV"
     - uses: actions-rs/toolchain@v1
       with:
         toolchain: stable
@@ -50,10 +39,10 @@ jobs:
           export ARCH=arm64
         fi
 
-        bash utilities/deb.sh ${{ env.packageVersion }}
+        bash utilities/deb.sh ${{ inputs.packageVersion }}
 
         deb-s3 upload \
           --lock \
           --bucket apt.postgresml.org \
-          pgcat-${{ env.packageVersion }}-ubuntu22.04-${ARCH}.deb \
+          pgcat-${{ inputs.packageVersion }}-ubuntu22.04-${ARCH}.deb \
           --codename $(lsb_release -cs)

.gitignore

@@ -10,5 +10,4 @@ lcov.info
 dev/.bash_history
 dev/cache
 !dev/cache/.keepme
-.venv
+.venv
-**/__pycache__

CONTRIBUTING.md

@@ -6,32 +6,6 @@ Thank you for contributing! Just a few tips here:
 2. Run the test suite (e.g. `pgbench`) to make sure everything still works. The tests are in `.circleci/run_tests.sh`.
 3. Performance is important, make sure there are no regressions in your branch vs. `main`.
 
-## How to run the integration tests locally and iterate on them
-We have integration tests written in Ruby, Python, Go and Rust.
-Below are the steps to run them in a developer-friendly way that allows iterating and quick turnaround.
-Hear me out, this should be easy, it will involve opening a shell into a container with all the necessary dependancies available for you and you can modify the test code and immediately rerun your test in the interactive shell.
-
-
-Quite simply, make sure you have docker installed and then run
-`./start_test_env.sh`
-
-That is it!
-
-Within this test environment you can modify the file in your favorite IDE and rerun the tests without having to bootstrap the entire environment again.
-
-Once the environment is ready, you can run the tests by running
-Ruby:   `cd /app/tests/ruby && bundle exec ruby <test_name>.rb --format documentation`
-Python: `cd /app/ && pytest`
-Rust:   `cd /app/tests/rust && cargo run`
-Go:     `cd /app/tests/go && /usr/local/go/bin/go test`
-
-You can also rebuild PgCat directly within the environment and the tests will run against the newly built binary
-To rebuild PgCat, just run `cargo build` within the container under `/app`
-
-![Animated gif showing how to run tests](https://github.com/user-attachments/assets/2258fde3-2aed-4efb-bdc5-e4f12dcd4d33)
-
-
-
 Happy hacking!
 
 ## TODOs

Cargo.lock

@@ -1526,9 +1526,9 @@ checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
 [[package]]
 name = "sqlparser"
-version = "0.51.0"
+version = "0.41.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fe11944a61da0da3f592e19a45ebe5ab92dc14a779907ff1f08fbb797bfefc7"
+checksum = "5cc2c25a6c66789625ef164b4c7d2e548d627902280c13710d33da8222169964"
 dependencies = [
  "log",
  "sqlparser_derive",

Cargo.toml

@@ -19,7 +19,7 @@ serde_derive = "1"
 regex = "1"
 num_cpus = "1"
 once_cell = "1"
-sqlparser = { version = "0.51", features = ["visitor"] }
+sqlparser = { version = "0.41", features = ["visitor"] }
 log = "0.4"
 arc-swap = "1"
 parking_lot = "0.12.1"

postinst

@@ -7,7 +7,3 @@ systemctl enable pgcat
 if ! id pgcat 2> /dev/null; then
 	useradd -s /usr/bin/false pgcat
 fi
-
-if [ -f /etc/pgcat.toml ]; then
-	systemctl start pgcat
-fi

src/auth_passthrough.rs

@@ -1,4 +1,3 @@
-use crate::config::AuthType;
 use crate::errors::Error;
 use crate::pool::ConnectionPool;
 use crate::server::Server;
@@ -72,7 +71,6 @@ impl AuthPassthrough {
     pub async fn fetch_hash(&self, address: &crate::config::Address) -> Result<String, Error> {
         let auth_user = crate::config::User {
             username: self.user.clone(),
-            auth_type: AuthType::MD5,
             password: Some(self.password.clone()),
             server_username: None,
             server_password: None,

src/client.rs

@@ -14,9 +14,7 @@ use tokio::sync::mpsc::Sender;
 
 use crate::admin::{generate_server_parameters_for_admin, handle_admin};
 use crate::auth_passthrough::refetch_auth_hash;
-use crate::config::{
+use crate::config::{get_config, get_idle_client_in_transaction_timeout, Address, PoolMode};
-    get_config, get_idle_client_in_transaction_timeout, Address, AuthType, PoolMode,
-};
 use crate::constants::*;
 use crate::messages::*;
 use crate::plugins::PluginOutput;
@@ -465,8 +463,8 @@ where
             .count()
             == 1;
 
+        // Kick any client that's not admin while we're in admin-only mode.
         if !admin && admin_only {
-            // Kick any client that's not admin while we're in admin-only mode.
             debug!(
                 "Rejecting non-admin connection to {} when in admin only mode",
                 pool_name
@@ -483,76 +481,72 @@ where
         let process_id: i32 = rand::random();
         let secret_key: i32 = rand::random();
 
+        // Perform MD5 authentication.
+        // TODO: Add SASL support.
+        let salt = md5_challenge(&mut write).await?;
+
+        let code = match read.read_u8().await {
+            Ok(p) => p,
+            Err(_) => {
+                return Err(Error::ClientSocketError(
+                    "password code".into(),
+                    client_identifier,
+                ))
+            }
+        };
+
+        // PasswordMessage
+        if code as char != 'p' {
+            return Err(Error::ProtocolSyncError(format!(
+                "Expected p, got {}",
+                code as char
+            )));
+        }
+
+        let len = match read.read_i32().await {
+            Ok(len) => len,
+            Err(_) => {
+                return Err(Error::ClientSocketError(
+                    "password message length".into(),
+                    client_identifier,
+                ))
+            }
+        };
+
+        let mut password_response = vec![0u8; (len - 4) as usize];
+
+        match read.read_exact(&mut password_response).await {
+            Ok(_) => (),
+            Err(_) => {
+                return Err(Error::ClientSocketError(
+                    "password message".into(),
+                    client_identifier,
+                ))
+            }
+        };
+
         let mut prepared_statements_enabled = false;
 
         // Authenticate admin user.
         let (transaction_mode, mut server_parameters) = if admin {
             let config = get_config();
-            // TODO: Add SASL support.
-            // Perform MD5 authentication.
-            match config.general.admin_auth_type {
-                AuthType::Trust => (),
-                AuthType::MD5 => {
-                    let salt = md5_challenge(&mut write).await?;
 
-                    let code = match read.read_u8().await {
+            // Compare server and client hashes.
-                        Ok(p) => p,
+            let password_hash = md5_hash_password(
-                        Err(_) => {
+                &config.general.admin_username,
-                            return Err(Error::ClientSocketError(
+                &config.general.admin_password,
-                                "password code".into(),
+                &salt,
-                                client_identifier,
+            );
-                            ))
-                        }
-                    };
 
-                    // PasswordMessage
+            if password_hash != password_response {
-                    if code as char != 'p' {
+                let error = Error::ClientGeneralError("Invalid password".into(), client_identifier);
-                        return Err(Error::ProtocolSyncError(format!(
-                            "Expected p, got {}",
-                            code as char
-                        )));
-                    }
 
-                    let len = match read.read_i32().await {
+                warn!("{}", error);
-                        Ok(len) => len,
+                wrong_password(&mut write, username).await?;
-                        Err(_) => {
-                            return Err(Error::ClientSocketError(
-                                "password message length".into(),
-                                client_identifier,
-                            ))
-                        }
-                    };
 
-                    let mut password_response = vec![0u8; (len - 4) as usize];
+                return Err(error);
-
-                    match read.read_exact(&mut password_response).await {
-                        Ok(_) => (),
-                        Err(_) => {
-                            return Err(Error::ClientSocketError(
-                                "password message".into(),
-                                client_identifier,
-                            ))
-                        }
-                    };
-
-                    // Compare server and client hashes.
-                    let password_hash = md5_hash_password(
-                        &config.general.admin_username,
-                        &config.general.admin_password,
-                        &salt,
-                    );
-
-                    if password_hash != password_response {
-                        let error =
-                            Error::ClientGeneralError("Invalid password".into(), client_identifier);
-
-                        warn!("{}", error);
-                        wrong_password(&mut write, username).await?;
-
-                        return Err(error);
-                    }
-                }
             }
+
             (false, generate_server_parameters_for_admin())
         }
         // Authenticate normal user.
@@ -579,143 +573,92 @@ where
             // Obtain the hash to compare, we give preference to that written in cleartext in config
             // if there is nothing set in cleartext and auth passthrough (auth_query) is configured, we use the hash obtained
             // when the pool was created. If there is no hash there, we try to fetch it one more time.
-            match pool.settings.user.auth_type {
+            let password_hash = if let Some(password) = &pool.settings.user.password {
-                AuthType::Trust => (),
+                Some(md5_hash_password(username, password, &salt))
-                AuthType::MD5 => {
+            } else {
-                    // Perform MD5 authentication.
+                if !get_config().is_auth_query_configured() {
-                    // TODO: Add SASL support.
+                    wrong_password(&mut write, username).await?;
-                    let salt = md5_challenge(&mut write).await?;
+                    return Err(Error::ClientAuthImpossible(username.into()));
+                }
 
-                    let code = match read.read_u8().await {
+                let mut hash = (*pool.auth_hash.read()).clone();
-                        Ok(p) => p,
-                        Err(_) => {
-                            return Err(Error::ClientSocketError(
-                                "password code".into(),
-                                client_identifier,
-                            ))
-                        }
-                    };
 
-                    // PasswordMessage
+                if hash.is_none() {
-                    if code as char != 'p' {
+                    warn!(
-                        return Err(Error::ProtocolSyncError(format!(
+                        "Query auth configured \
-                            "Expected p, got {}",
+                          but no hash password found \
-                            code as char
+                          for pool {}. Will try to refetch it.",
-                        )));
+                        pool_name
-                    }
+                    );
 
-                    let len = match read.read_i32().await {
+                    match refetch_auth_hash(&pool).await {
-                        Ok(len) => len,
+                        Ok(fetched_hash) => {
-                        Err(_) => {
+                            warn!("Password for {}, obtained. Updating.", client_identifier);
-                            return Err(Error::ClientSocketError(
-                                "password message length".into(),
-                                client_identifier,
-                            ))
-                        }
-                    };
-
-                    let mut password_response = vec![0u8; (len - 4) as usize];
-
-                    match read.read_exact(&mut password_response).await {
-                        Ok(_) => (),
-                        Err(_) => {
-                            return Err(Error::ClientSocketError(
-                                "password message".into(),
-                                client_identifier,
-                            ))
-                        }
-                    };
-
-                    let password_hash = if let Some(password) = &pool.settings.user.password {
-                        Some(md5_hash_password(username, password, &salt))
-                    } else {
-                        if !get_config().is_auth_query_configured() {
-                            wrong_password(&mut write, username).await?;
-                            return Err(Error::ClientAuthImpossible(username.into()));
-                        }
-
-                        let mut hash = (*pool.auth_hash.read()).clone();
-
-                        if hash.is_none() {
-                            warn!(
-                                "Query auth configured \
-                                  but no hash password found \
-                                  for pool {}. Will try to refetch it.",
-                                pool_name
-                            );
-
-                            match refetch_auth_hash(&pool).await {
-                                Ok(fetched_hash) => {
-                                    warn!(
-                                        "Password for {}, obtained. Updating.",
-                                        client_identifier
-                                    );
-
-                                    {
-                                        let mut pool_auth_hash = pool.auth_hash.write();
-                                        *pool_auth_hash = Some(fetched_hash.clone());
-                                    }
-
-                                    hash = Some(fetched_hash);
-                                }
-
-                                Err(err) => {
-                                    wrong_password(&mut write, username).await?;
-
-                                    return Err(Error::ClientAuthPassthroughError(
-                                        err.to_string(),
-                                        client_identifier,
-                                    ));
-                                }
-                            }
-                        };
-
-                        Some(md5_hash_second_pass(&hash.unwrap(), &salt))
-                    };
-
-                    // Once we have the resulting hash, we compare with what the client gave us.
-                    // If they do not match and auth query is set up, we try to refetch the hash one more time
-                    // to see if the password has changed since the pool was created.
-                    //
-                    // @TODO: we could end up fetching again the same password twice (see above).
-                    if password_hash.unwrap() != password_response {
-                        warn!(
-                            "Invalid password {}, will try to refetch it.",
-                            client_identifier
-                        );
-
-                        let fetched_hash = match refetch_auth_hash(&pool).await {
-                            Ok(fetched_hash) => fetched_hash,
-                            Err(err) => {
-                                wrong_password(&mut write, username).await?;
-
-                                return Err(err);
-                            }
-                        };
-
-                        let new_password_hash = md5_hash_second_pass(&fetched_hash, &salt);
-
-                        // Ok password changed in server an auth is possible.
-                        if new_password_hash == password_response {
-                            warn!(
-                                "Password for {}, changed in server. Updating.",
-                                client_identifier
-                            );
 
                             {
                                 let mut pool_auth_hash = pool.auth_hash.write();
-                                *pool_auth_hash = Some(fetched_hash);
+                                *pool_auth_hash = Some(fetched_hash.clone());
                             }
-                        } else {
+
+                            hash = Some(fetched_hash);
+                        }
+
+                        Err(err) => {
                             wrong_password(&mut write, username).await?;
-                            return Err(Error::ClientGeneralError(
+
-                                "Invalid password".into(),
+                            return Err(Error::ClientAuthPassthroughError(
+                                err.to_string(),
                                 client_identifier,
                             ));
                         }
                     }
+                };
+
+                Some(md5_hash_second_pass(&hash.unwrap(), &salt))
+            };
+
+            // Once we have the resulting hash, we compare with what the client gave us.
+            // If they do not match and auth query is set up, we try to refetch the hash one more time
+            // to see if the password has changed since the pool was created.
+            //
+            // @TODO: we could end up fetching again the same password twice (see above).
+            if password_hash.unwrap() != password_response {
+                warn!(
+                    "Invalid password {}, will try to refetch it.",
+                    client_identifier
+                );
+
+                let fetched_hash = match refetch_auth_hash(&pool).await {
+                    Ok(fetched_hash) => fetched_hash,
+                    Err(err) => {
+                        wrong_password(&mut write, username).await?;
+
+                        return Err(err);
+                    }
+                };
+
+                let new_password_hash = md5_hash_second_pass(&fetched_hash, &salt);
+
+                // Ok password changed in server an auth is possible.
+                if new_password_hash == password_response {
+                    warn!(
+                        "Password for {}, changed in server. Updating.",
+                        client_identifier
+                    );
+
+                    {
+                        let mut pool_auth_hash = pool.auth_hash.write();
+                        *pool_auth_hash = Some(fetched_hash);
+                    }
+                } else {
+                    wrong_password(&mut write, username).await?;
+                    return Err(Error::ClientGeneralError(
+                        "Invalid password".into(),
+                        client_identifier,
+                    ));
                 }
             }
+
             let transaction_mode = pool.settings.pool_mode == PoolMode::Transaction;
             prepared_statements_enabled =
                 transaction_mode && pool.prepared_statement_cache.is_some();

src/config.rs

@@ -208,9 +208,6 @@ impl Address {
 pub struct User {
     pub username: String,
     pub password: Option<String>,
-
-    #[serde(default = "User::default_auth_type")]
-    pub auth_type: AuthType,
     pub server_username: Option<String>,
     pub server_password: Option<String>,
     pub pool_size: u32,
@@ -228,7 +225,6 @@ impl Default for User {
         User {
             username: String::from("postgres"),
             password: None,
-            auth_type: AuthType::MD5,
             server_username: None,
             server_password: None,
             pool_size: 15,
@@ -243,10 +239,6 @@ impl Default for User {
 }
 
 impl User {
-    pub fn default_auth_type() -> AuthType {
-        AuthType::MD5
-    }
-
     fn validate(&self) -> Result<(), Error> {
         if let Some(min_pool_size) = self.min_pool_size {
             if min_pool_size > self.pool_size {
@@ -342,9 +334,6 @@ pub struct General {
     pub admin_username: String,
     pub admin_password: String,
 
-    #[serde(default = "General::default_admin_auth_type")]
-    pub admin_auth_type: AuthType,
-
     #[serde(default = "General::default_validate_config")]
     pub validate_config: bool,
 
@@ -359,10 +348,6 @@ impl General {
         "0.0.0.0".into()
     }
 
-    pub fn default_admin_auth_type() -> AuthType {
-        AuthType::MD5
-    }
-
     pub fn default_port() -> u16 {
         5432
     }
@@ -471,7 +456,6 @@ impl Default for General {
             verify_server_certificate: false,
             admin_username: String::from("admin"),
             admin_password: String::from("admin"),
-            admin_auth_type: AuthType::MD5,
             validate_config: true,
             auth_query: None,
             auth_query_user: None,
@@ -492,15 +476,6 @@ pub enum PoolMode {
     Session,
 }
 
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Copy, Hash)]
-pub enum AuthType {
-    #[serde(alias = "trust", alias = "Trust")]
-    Trust,
-
-    #[serde(alias = "md5", alias = "MD5")]
-    MD5,
-}
-
 impl std::fmt::Display for PoolMode {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {

src/prometheus.rs

@@ -200,17 +200,18 @@ struct PrometheusMetric<Value: fmt::Display> {
 
 impl<Value: fmt::Display> fmt::Display for PrometheusMetric<Value> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let mut sorted_labels: Vec<_> = self.labels.iter().collect();
+        let formatted_labels = self
-        sorted_labels.sort_by_key(|&(key, _)| key);
+            .labels
-        let formatted_labels = sorted_labels
             .iter()
             .map(|(key, value)| format!("{}=\"{}\"", key, value))
             .collect::<Vec<_>>()
             .join(",");
         write!(
             f,
-            "{name}{{{formatted_labels}}} {value}",
+            "# HELP {name} {help}\n# TYPE {name} {ty}\n{name}{{{formatted_labels}}} {value}\n",
             name = format_args!("pgcat_{}", self.name),
+            help = self.help,
+            ty = self.ty,
             formatted_labels = formatted_labels,
             value = self.value
         )
@@ -246,7 +247,7 @@ impl<Value: fmt::Display> PrometheusMetric<Value> {
         labels.insert("pool", address.pool_name.clone());
         labels.insert("index", address.address_index.to_string());
         labels.insert("database", address.database.to_string());
-        labels.insert("username", address.username.clone());
+        labels.insert("user", address.username.clone());
 
         Self::from_name(&format!("databases_{}", name), value, labels)
     }
@@ -263,8 +264,7 @@ impl<Value: fmt::Display> PrometheusMetric<Value> {
         labels.insert("pool", address.pool_name.clone());
         labels.insert("index", address.address_index.to_string());
         labels.insert("database", address.database.to_string());
-        labels.insert("username", address.username.clone());
+        labels.insert("user", address.username.clone());
-
         Self::from_name(&format!("servers_{}", name), value, labels)
     }
 
@@ -276,7 +276,7 @@ impl<Value: fmt::Display> PrometheusMetric<Value> {
         labels.insert("role", address.role.to_string());
         labels.insert("index", address.address_index.to_string());
         labels.insert("database", address.database.to_string());
-        labels.insert("username", address.username.clone());
+        labels.insert("user", address.username.clone());
 
         Self::from_name(&format!("stats_{}", name), value, labels)
     }
@@ -288,15 +288,6 @@ impl<Value: fmt::Display> PrometheusMetric<Value> {
 
         Self::from_name(&format!("pools_{}", name), value, labels)
     }
-
-    fn get_header(&self) -> String {
-        format!(
-            "\n# HELP {name} {help}\n# TYPE {name} {ty}",
-            name = format_args!("pgcat_{}", self.name),
-            help = self.help,
-            ty = self.ty,
-        )
-    }
 }
 
 async fn prometheus_stats(
@@ -322,7 +313,6 @@ async fn prometheus_stats(
 
 // Adds metrics shown in a SHOW STATS admin command.
 fn push_address_stats(lines: &mut Vec<String>) {
-    let mut grouped_metrics: HashMap<String, Vec<PrometheusMetric<u64>>> = HashMap::new();
     for (_, pool) in get_all_pools() {
         for shard in 0..pool.shards() {
             for server in 0..pool.servers(shard) {
@@ -332,10 +322,7 @@ fn push_address_stats(lines: &mut Vec<String>) {
                     if let Some(prometheus_metric) =
                         PrometheusMetric::<u64>::from_address(address, &key, value)
                     {
-                        grouped_metrics
+                        lines.push(prometheus_metric.to_string());
-                            .entry(key)
-                            .or_default()
-                            .push(prometheus_metric);
                     } else {
                         debug!("Metric {} not implemented for {}", key, address.name());
                     }
@@ -343,53 +330,33 @@ fn push_address_stats(lines: &mut Vec<String>) {
             }
         }
     }
-    for (_key, metrics) in grouped_metrics {
-        if !metrics.is_empty() {
-            lines.push(metrics[0].get_header());
-            for metric in metrics {
-                lines.push(metric.to_string());
-            }
-        }
-    }
 }
 
 // Adds relevant metrics shown in a SHOW POOLS admin command.
 fn push_pool_stats(lines: &mut Vec<String>) {
-    let mut grouped_metrics: HashMap<String, Vec<PrometheusMetric<u64>>> = HashMap::new();
     let pool_stats = PoolStats::construct_pool_lookup();
     for (pool_id, stats) in pool_stats.iter() {
         for (name, value) in stats.clone() {
             if let Some(prometheus_metric) =
                 PrometheusMetric::<u64>::from_pool(pool_id.clone(), &name, value)
             {
-                grouped_metrics
+                lines.push(prometheus_metric.to_string());
-                    .entry(name)
-                    .or_default()
-                    .push(prometheus_metric);
             } else {
                 debug!("Metric {} not implemented for ({})", name, *pool_id);
             }
         }
     }
-    for (_key, metrics) in grouped_metrics {
-        if !metrics.is_empty() {
-            lines.push(metrics[0].get_header());
-            for metric in metrics {
-                lines.push(metric.to_string());
-            }
-        }
-    }
 }
 
 // Adds relevant metrics shown in a SHOW DATABASES admin command.
 fn push_database_stats(lines: &mut Vec<String>) {
-    let mut grouped_metrics: HashMap<String, Vec<PrometheusMetric<u32>>> = HashMap::new();
     for (_, pool) in get_all_pools() {
         let pool_config = pool.settings.clone();
         for shard in 0..pool.shards() {
             for server in 0..pool.servers(shard) {
                 let address = pool.address(shard, server);
                 let pool_state = pool.pool_state(shard, server);
+
                 let metrics = vec![
                     ("pool_size", pool_config.user.pool_size),
                     ("current_connections", pool_state.connections),
@@ -398,10 +365,7 @@ fn push_database_stats(lines: &mut Vec<String>) {
                     if let Some(prometheus_metric) =
                         PrometheusMetric::<u32>::from_database_info(address, key, value)
                     {
-                        grouped_metrics
+                        lines.push(prometheus_metric.to_string());
-                            .entry(key.to_string())
-                            .or_default()
-                            .push(prometheus_metric);
                     } else {
                         debug!("Metric {} not implemented for {}", key, address.name());
                     }
@@ -409,14 +373,6 @@ fn push_database_stats(lines: &mut Vec<String>) {
             }
         }
     }
-    for (_key, metrics) in grouped_metrics {
-        if !metrics.is_empty() {
-            lines.push(metrics[0].get_header());
-            for metric in metrics {
-                lines.push(metric.to_string());
-            }
-        }
-    }
 }
 
 // Adds relevant metrics shown in a SHOW SERVERS admin command.
@@ -449,7 +405,7 @@ fn push_server_stats(lines: &mut Vec<String>) {
             crate::stats::ServerState::Idle => entry.idle_count += 1,
         }
     }
-    let mut grouped_metrics: HashMap<String, Vec<PrometheusMetric<u64>>> = HashMap::new();
+
     for (_, pool) in get_all_pools() {
         for shard in 0..pool.shards() {
             for server in 0..pool.servers(shard) {
@@ -472,10 +428,7 @@ fn push_server_stats(lines: &mut Vec<String>) {
                         if let Some(prometheus_metric) =
                             PrometheusMetric::<u64>::from_server_info(address, key, value)
                         {
-                            grouped_metrics
+                            lines.push(prometheus_metric.to_string());
-                                .entry(key.to_string())
-                                .or_default()
-                                .push(prometheus_metric);
                         } else {
                             debug!("Metric {} not implemented for {}", key, address.name());
                         }
@@ -484,14 +437,6 @@ fn push_server_stats(lines: &mut Vec<String>) {
             }
         }
     }
-    for (_key, metrics) in grouped_metrics {
-        if !metrics.is_empty() {
-            lines.push(metrics[0].get_header());
-            for metric in metrics {
-                lines.push(metric.to_string());
-            }
-        }
-    }
 }
 
 pub async fn start_metric_server(http_addr: SocketAddr) {

start_test_env.sh

@@ -1,34 +0,0 @@
-GREEN="\033[0;32m"
-RED="\033[0;31m"
-BLUE="\033[0;34m"
-RESET="\033[0m"
-
-
-cd tests/docker/
-docker compose kill main || true
-docker compose build main
-docker compose down
-docker compose up -d
-# wait for the container to start
-while ! docker compose exec main ls; do
-    echo "Waiting for test environment to start"
-    sleep 1
-done
-echo "==================================="
-docker compose exec -e LOG_LEVEL=error -d main toxiproxy-server
-docker compose exec --workdir /app main cargo build
-docker compose exec -d --workdir /app main ./target/debug/pgcat ./.circleci/pgcat.toml
-docker compose exec --workdir /app/tests/ruby main bundle install
-docker compose exec --workdir /app/tests/python main pip3 install -r requirements.txt
-echo "Interactive test environment ready"
-echo "To run integration tests, you can use the following commands:"
-echo -e "   ${BLUE}Ruby:   ${RED}cd /app/tests/ruby && bundle exec ruby tests.rb --format documentation${RESET}"
-echo -e "   ${BLUE}Python: ${RED}cd /app/ && pytest ${RESET}"
-echo -e "   ${BLUE}Rust:   ${RED}cd /app/tests/rust && cargo run ${RESET}"
-echo -e "   ${BLUE}Go:     ${RED}cd /app/tests/go && /usr/local/go/bin/go test${RESET}"
-echo "the source code for tests are directly linked to the source code in the container so you can modify the code and run the tests again"
-echo "You can rebuild PgCat from within the container by running"
-echo -e "  ${GREEN}cargo build${RESET}"
-echo "and then run the tests again"
-echo "==================================="
-docker compose exec --workdir /app/tests main bash

tests/docker/docker-compose.yml

@@ -1,3 +1,4 @@
+version: "3"
 services:
   pg1:
     image: postgres:14
@@ -47,8 +48,6 @@ services:
   main:
     build: .
     command: ["bash", "/app/tests/docker/run.sh"]
-    environment:
-      - INTERACTIVE_TEST_ENVIRONMENT=true
     volumes:
       - ../../:/app/
       - /app/target/

tests/docker/run.sh

@@ -5,38 +5,6 @@ rm /app/*.profraw || true
 rm /app/pgcat.profdata || true
 rm -rf /app/cov || true
 
-# Prepares the interactive test environment
-# 
-if [ -n "$INTERACTIVE_TEST_ENVIRONMENT" ]; then
-    ports=(5432 7432 8432 9432 10432)
-    for port in "${ports[@]}"; do
-        is_it_up=0
-        attempts=0
-        while [ $is_it_up -eq 0 ]; do
-            PGPASSWORD=postgres psql -h 127.0.0.1 -p $port -U postgres -c '\q' > /dev/null 2>&1
-            if [ $? -eq 0 ]; then
-                echo "PostgreSQL on port $port is up."
-                is_it_up=1
-            else
-                attempts=$((attempts+1))
-                if [ $attempts -gt 10 ]; then
-                    echo "PostgreSQL on port $port is down, giving up."
-                    exit 1
-                fi
-                echo "PostgreSQL on port $port is down, waiting for it to start."
-                sleep 1
-            fi
-        done
-    done
-    PGPASSWORD=postgres psql -e -h 127.0.0.1 -p 5432  -U postgres -f /app/tests/sharding/query_routing_setup.sql
-    PGPASSWORD=postgres psql -e -h 127.0.0.1 -p 7432  -U postgres -f /app/tests/sharding/query_routing_setup.sql
-    PGPASSWORD=postgres psql -e -h 127.0.0.1 -p 8432  -U postgres -f /app/tests/sharding/query_routing_setup.sql
-    PGPASSWORD=postgres psql -e -h 127.0.0.1 -p 9432  -U postgres -f /app/tests/sharding/query_routing_setup.sql
-    PGPASSWORD=postgres psql -e -h 127.0.0.1 -p 10432 -U postgres -f /app/tests/sharding/query_routing_setup.sql
-    sleep 100000000000000000
-    exit 0
-fi
-
 export LLVM_PROFILE_FILE="/app/pgcat-%m-%p.profraw"
 export RUSTC_BOOTSTRAP=1
 export CARGO_INCREMENTAL=0

tests/python/requirements.txt

@@ -1,3 +1,2 @@
-pytest
 psycopg2==2.9.3
-psutil==5.9.1
+psutil==5.9.1

tests/python/test_auth.py

@@ -1,71 +0,0 @@
-import utils
-import signal
-
-class TestTrustAuth:
-    @classmethod
-    def setup_method(cls):
-        config= """
-        [general]
-        host = "0.0.0.0"
-        port = 6432
-        admin_username = "admin_user"
-        admin_password = ""
-        admin_auth_type = "trust"
-
-        [pools.sharded_db.users.0]
-        username = "sharding_user"
-        password = "sharding_user"
-        auth_type = "trust"
-        pool_size = 10
-        min_pool_size = 1
-        pool_mode = "transaction"
-
-        [pools.sharded_db.shards.0]
-        servers = [
-          [ "127.0.0.1", 5432, "primary" ],
-        ]
-        database = "shard0"
-        """
-        utils.pgcat_generic_start(config)
-
-    @classmethod
-    def teardown_method(self):
-        utils.pg_cat_send_signal(signal.SIGTERM)
-
-    def test_admin_trust_auth(self):
-        conn, cur = utils.connect_db_trust(admin=True)
-        cur.execute("SHOW POOLS")
-        res = cur.fetchall()
-        print(res)
-        utils.cleanup_conn(conn, cur)
-
-    def test_normal_trust_auth(self):
-        conn, cur = utils.connect_db_trust(autocommit=False)
-        cur.execute("SELECT 1")
-        res = cur.fetchall()
-        print(res)
-        utils.cleanup_conn(conn, cur)
-
-class TestMD5Auth:
-    @classmethod
-    def setup_method(cls):
-        utils.pgcat_start()
-
-    @classmethod
-    def teardown_method(self):
-        utils.pg_cat_send_signal(signal.SIGTERM)
-
-    def test_normal_db_access(self):
-        conn, cur = utils.connect_db(autocommit=False)
-        cur.execute("SELECT 1")
-        res = cur.fetchall()
-        print(res)
-        utils.cleanup_conn(conn, cur)
-
-    def test_admin_db_access(self):
-        conn, cur = utils.connect_db(admin=True)
-
-        cur.execute("SHOW POOLS")
-        res = cur.fetchall()
-        print(res)
-        utils.cleanup_conn(conn, cur)

tests/python/tests.py

@@ -1,12 +1,84 @@
-
+from typing import Tuple
+import psycopg2
+import psutil
+import os
 import signal
 import time
 
-import psycopg2
-import utils
-
 SHUTDOWN_TIMEOUT = 5
 
+PGCAT_HOST = "127.0.0.1"
+PGCAT_PORT = "6432"
+
+
+def pgcat_start():
+    pg_cat_send_signal(signal.SIGTERM)
+    os.system("./target/debug/pgcat .circleci/pgcat.toml &")
+    time.sleep(2)
+
+
+def pg_cat_send_signal(signal: signal.Signals):
+    try:
+        for proc in psutil.process_iter(["pid", "name"]):
+            if "pgcat" == proc.name():
+                os.kill(proc.pid, signal)
+    except Exception as e:
+        # The process can be gone when we send this signal
+        print(e)
+
+    if signal == signal.SIGTERM:
+        # Returns 0 if pgcat process exists
+        time.sleep(2)
+        if not os.system('pgrep pgcat'):
+            raise Exception("pgcat not closed after SIGTERM")
+
+
+def connect_db(
+    autocommit: bool = True,
+    admin: bool = False,
+) -> Tuple[psycopg2.extensions.connection, psycopg2.extensions.cursor]:
+
+    if admin:
+        user = "admin_user"
+        password = "admin_pass"
+        db = "pgcat"
+    else:
+        user = "sharding_user"
+        password = "sharding_user"
+        db = "sharded_db"
+
+    conn = psycopg2.connect(
+        f"postgres://{user}:{password}@{PGCAT_HOST}:{PGCAT_PORT}/{db}?application_name=testing_pgcat",
+        connect_timeout=2,
+    )
+    conn.autocommit = autocommit
+    cur = conn.cursor()
+
+    return (conn, cur)
+
+
+def cleanup_conn(conn: psycopg2.extensions.connection, cur: psycopg2.extensions.cursor):
+    cur.close()
+    conn.close()
+
+
+def test_normal_db_access():
+    pgcat_start()
+    conn, cur = connect_db(autocommit=False)
+    cur.execute("SELECT 1")
+    res = cur.fetchall()
+    print(res)
+    cleanup_conn(conn, cur)
+
+
+def test_admin_db_access():
+    conn, cur = connect_db(admin=True)
+
+    cur.execute("SHOW POOLS")
+    res = cur.fetchall()
+    print(res)
+    cleanup_conn(conn, cur)
+
 
 def test_shutdown_logic():
 
@@ -14,17 +86,17 @@ def test_shutdown_logic():
     # NO ACTIVE QUERIES SIGINT HANDLING
 
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and send query (not in transaction)
-    conn, cur = utils.connect_db()
+    conn, cur = connect_db()
 
     cur.execute("BEGIN;")
     cur.execute("SELECT 1;")
     cur.execute("COMMIT;")
 
     # Send sigint to pgcat
-    utils.pg_cat_send_signal(signal.SIGINT)
+    pg_cat_send_signal(signal.SIGINT)
     time.sleep(1)
 
     # Check that any new queries fail after sigint since server should close with no active transactions
@@ -36,18 +108,18 @@ def test_shutdown_logic():
         # Fail if query execution succeeded
         raise Exception("Server not closed after sigint")
 
-    utils.cleanup_conn(conn, cur)
+    cleanup_conn(conn, cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # NO ACTIVE QUERIES ADMIN SHUTDOWN COMMAND
 
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction
-    conn, cur = utils.connect_db()
+    conn, cur = connect_db()
-    admin_conn, admin_cur = utils.connect_db(admin=True)
+    admin_conn, admin_cur = connect_db(admin=True)
 
     cur.execute("BEGIN;")
     cur.execute("SELECT 1;")
@@ -66,24 +138,24 @@ def test_shutdown_logic():
         # Fail if query execution succeeded
         raise Exception("Server not closed after sigint")
 
-    utils.cleanup_conn(conn, cur)
+    cleanup_conn(conn, cur)
-    utils.cleanup_conn(admin_conn, admin_cur)
+    cleanup_conn(admin_conn, admin_cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # HANDLE TRANSACTION WITH SIGINT
 
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction
-    conn, cur = utils.connect_db()
+    conn, cur = connect_db()
 
     cur.execute("BEGIN;")
     cur.execute("SELECT 1;")
 
     # Send sigint to pgcat while still in transaction
-    utils.pg_cat_send_signal(signal.SIGINT)
+    pg_cat_send_signal(signal.SIGINT)
     time.sleep(1)
 
     # Check that any new queries succeed after sigint since server should still allow transaction to complete
@@ -93,18 +165,18 @@ def test_shutdown_logic():
         # Fail if query fails since server closed
         raise Exception("Server closed while in transaction", e.pgerror)
 
-    utils.cleanup_conn(conn, cur)
+    cleanup_conn(conn, cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # HANDLE TRANSACTION WITH ADMIN SHUTDOWN COMMAND
 
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction
-    conn, cur = utils.connect_db()
+    conn, cur = connect_db()
-    admin_conn, admin_cur = utils.connect_db(admin=True)
+    admin_conn, admin_cur = connect_db(admin=True)
 
     cur.execute("BEGIN;")
     cur.execute("SELECT 1;")
@@ -122,30 +194,30 @@ def test_shutdown_logic():
         # Fail if query fails since server closed
         raise Exception("Server closed while in transaction", e.pgerror)
 
-    utils.cleanup_conn(conn, cur)
+    cleanup_conn(conn, cur)
-    utils.cleanup_conn(admin_conn, admin_cur)
+    cleanup_conn(admin_conn, admin_cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # NO NEW NON-ADMIN CONNECTIONS DURING SHUTDOWN
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction
-    transaction_conn, transaction_cur = utils.connect_db()
+    transaction_conn, transaction_cur = connect_db()
 
     transaction_cur.execute("BEGIN;")
     transaction_cur.execute("SELECT 1;")
 
     # Send sigint to pgcat while still in transaction
-    utils.pg_cat_send_signal(signal.SIGINT)
+    pg_cat_send_signal(signal.SIGINT)
     time.sleep(1)
 
     start = time.perf_counter()
     try:
-        conn, cur = utils.connect_db()
+        conn, cur = connect_db()
         cur.execute("SELECT 1;")
-        utils.cleanup_conn(conn, cur)
+        cleanup_conn(conn, cur)
     except psycopg2.OperationalError as e:
         time_taken = time.perf_counter() - start
         if time_taken > 0.1:
@@ -155,49 +227,49 @@ def test_shutdown_logic():
     else:
         raise Exception("Able connect to database during shutdown")
 
-    utils.cleanup_conn(transaction_conn, transaction_cur)
+    cleanup_conn(transaction_conn, transaction_cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # ALLOW NEW ADMIN CONNECTIONS DURING SHUTDOWN
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction
-    transaction_conn, transaction_cur = utils.connect_db()
+    transaction_conn, transaction_cur = connect_db()
 
     transaction_cur.execute("BEGIN;")
     transaction_cur.execute("SELECT 1;")
 
     # Send sigint to pgcat while still in transaction
-    utils.pg_cat_send_signal(signal.SIGINT)
+    pg_cat_send_signal(signal.SIGINT)
     time.sleep(1)
 
     try:
-        conn, cur = utils.connect_db(admin=True)
+        conn, cur = connect_db(admin=True)
         cur.execute("SHOW DATABASES;")
-        utils.cleanup_conn(conn, cur)
+        cleanup_conn(conn, cur)
     except psycopg2.OperationalError as e:
         raise Exception(e)
 
-    utils.cleanup_conn(transaction_conn, transaction_cur)
+    cleanup_conn(transaction_conn, transaction_cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # ADMIN CONNECTIONS CONTINUING TO WORK AFTER SHUTDOWN
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction
-    transaction_conn, transaction_cur = utils.connect_db()
+    transaction_conn, transaction_cur = connect_db()
     transaction_cur.execute("BEGIN;")
     transaction_cur.execute("SELECT 1;")
 
-    admin_conn, admin_cur = utils.connect_db(admin=True)
+    admin_conn, admin_cur = connect_db(admin=True)
     admin_cur.execute("SHOW DATABASES;")
 
     # Send sigint to pgcat while still in transaction
-    utils.pg_cat_send_signal(signal.SIGINT)
+    pg_cat_send_signal(signal.SIGINT)
     time.sleep(1)
 
     try:
@@ -205,24 +277,24 @@ def test_shutdown_logic():
     except psycopg2.OperationalError as e:
         raise Exception("Could not execute admin command:", e)
 
-    utils.cleanup_conn(transaction_conn, transaction_cur)
+    cleanup_conn(transaction_conn, transaction_cur)
-    utils.cleanup_conn(admin_conn, admin_cur)
+    cleanup_conn(admin_conn, admin_cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
     # HANDLE SHUTDOWN TIMEOUT WITH SIGINT
 
     # Start pgcat
-    utils.pgcat_start()
+    pgcat_start()
 
     # Create client connection and begin transaction, which should prevent server shutdown unless shutdown timeout is reached
-    conn, cur = utils.connect_db()
+    conn, cur = connect_db()
 
     cur.execute("BEGIN;")
     cur.execute("SELECT 1;")
 
     # Send sigint to pgcat while still in transaction
-    utils.pg_cat_send_signal(signal.SIGINT)
+    pg_cat_send_signal(signal.SIGINT)
 
     # pgcat shutdown timeout is set to SHUTDOWN_TIMEOUT seconds, so we sleep for SHUTDOWN_TIMEOUT + 1 seconds
     time.sleep(SHUTDOWN_TIMEOUT + 1)
@@ -236,7 +308,12 @@ def test_shutdown_logic():
         # Fail if query execution succeeded
         raise Exception("Server not closed after sigint and expected timeout")
 
-    utils.cleanup_conn(conn, cur)
+    cleanup_conn(conn, cur)
-    utils.pg_cat_send_signal(signal.SIGTERM)
+    pg_cat_send_signal(signal.SIGTERM)
 
     # - - - - - - - - - - - - - - - - - -
+
+
+test_normal_db_access()
+test_admin_db_access()
+test_shutdown_logic()

tests/python/utils.py

@@ -1,110 +0,0 @@
-import os
-import signal
-import time
-from typing import Tuple
-import tempfile
-
-import psutil
-import psycopg2
-
-PGCAT_HOST = "127.0.0.1"
-PGCAT_PORT = "6432"
-
-
-def _pgcat_start(config_path: str):
-    pg_cat_send_signal(signal.SIGTERM)
-    os.system(f"./target/debug/pgcat {config_path} &")
-    time.sleep(2)
-
-
-def pgcat_start():
-    _pgcat_start(config_path='.circleci/pgcat.toml')
-
-
-def pgcat_generic_start(config: str):
-    tmp = tempfile.NamedTemporaryFile()
-    with open(tmp.name, 'w') as f:
-        f.write(config)
-    _pgcat_start(config_path=tmp.name)
-
-
-def glauth_send_signal(signal: signal.Signals):
-    try:
-        for proc in psutil.process_iter(["pid", "name"]):
-            if proc.name() == "glauth":
-                os.kill(proc.pid, signal)
-    except Exception as e:
-        # The process can be gone when we send this signal
-        print(e)
-
-    if signal == signal.SIGTERM:
-        # Returns 0 if pgcat process exists
-        time.sleep(2)
-        if not os.system('pgrep glauth'):
-            raise Exception("glauth not closed after SIGTERM")
-
-
-def pg_cat_send_signal(signal: signal.Signals):
-    try:
-        for proc in psutil.process_iter(["pid", "name"]):
-            if "pgcat" == proc.name():
-                os.kill(proc.pid, signal)
-    except Exception as e:
-        # The process can be gone when we send this signal
-        print(e)
-
-    if signal == signal.SIGTERM:
-        # Returns 0 if pgcat process exists
-        time.sleep(2)
-        if not os.system('pgrep pgcat'):
-            raise Exception("pgcat not closed after SIGTERM")
-
-
-def connect_db(
-    autocommit: bool = True,
-    admin: bool = False,
-) -> Tuple[psycopg2.extensions.connection, psycopg2.extensions.cursor]:
-
-    if admin:
-        user = "admin_user"
-        password = "admin_pass"
-        db = "pgcat"
-    else:
-        user = "sharding_user"
-        password = "sharding_user"
-        db = "sharded_db"
-
-    conn = psycopg2.connect(
-        f"postgres://{user}:{password}@{PGCAT_HOST}:{PGCAT_PORT}/{db}?application_name=testing_pgcat",
-        connect_timeout=2,
-    )
-    conn.autocommit = autocommit
-    cur = conn.cursor()
-
-    return (conn, cur)
-
-def connect_db_trust(
-    autocommit: bool = True,
-    admin: bool = False,
-) -> Tuple[psycopg2.extensions.connection, psycopg2.extensions.cursor]:
-
-    if admin:
-        user = "admin_user"
-        db = "pgcat"
-    else:
-        user = "sharding_user"
-        db = "sharded_db"
-
-    conn = psycopg2.connect(
-        f"postgres://{user}@{PGCAT_HOST}:{PGCAT_PORT}/{db}?application_name=testing_pgcat",
-        connect_timeout=2,
-    )
-    conn.autocommit = autocommit
-    cur = conn.cursor()
-
-    return (conn, cur)
-
-
-def cleanup_conn(conn: psycopg2.extensions.connection, cur: psycopg2.extensions.cursor):
-    cur.close()
-    conn.close()

tests/ruby/Gemfile.lock

@@ -24,8 +24,7 @@ GEM
     pg (1.3.2)
     rainbow (3.1.1)
     regexp_parser (2.3.1)
-    rexml (3.3.6)
+    rexml (3.2.5)
-      strscan
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)
@@ -51,7 +50,6 @@ GEM
     rubocop-ast (1.17.0)
       parser (>= 3.1.1.0)
     ruby-progressbar (1.11.0)
-    strscan (3.1.0)
     toml (0.3.0)
       parslet (>= 1.8.0, < 3.0.0)
     toxiproxy (2.0.1)