mirror of
https://github.com/EnterpriseDB/repmgr.git
synced 2026-03-22 22:56:29 +00:00
Clean up dbutils.c
Put functions into the same "section" as noted in the header file.
This commit is contained in:
Ian Barwick
612
dbutils.c
612
dbutils.c
@@ -1414,83 +1414,6 @@ get_primary_node_id(PGconn *conn)
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}
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void
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init_replication_info(ReplInfo *replication_info)
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{
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memset(replication_info->current_timestamp, 0, sizeof(replication_info->current_timestamp));
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replication_info->last_wal_receive_lsn = InvalidXLogRecPtr;
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replication_info->last_wal_replay_lsn = InvalidXLogRecPtr;
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memset(replication_info->last_xact_replay_timestamp, 0, sizeof(replication_info->last_xact_replay_timestamp));
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replication_info->replication_lag_time = 0;
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replication_info->receiving_streamed_wal = true;
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}
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bool
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get_replication_info(PGconn *conn, ReplInfo *replication_info)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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bool success = true;
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initPQExpBuffer(&query);
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appendPQExpBufferStr(&query,
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" SELECT ts, "
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" last_wal_receive_lsn, "
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" last_wal_replay_lsn, "
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" last_xact_replay_timestamp, "
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" CASE WHEN (last_wal_receive_lsn = last_wal_replay_lsn) "
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" THEN 0::INT "
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" ELSE "
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" EXTRACT(epoch FROM (pg_catalog.clock_timestamp() - last_xact_replay_timestamp))::INT "
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" END AS replication_lag_time, "
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" COALESCE(last_wal_receive_lsn, '0/0') >= last_wal_replay_lsn AS receiving_streamed_wal "
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" FROM ( ");
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if (PQserverVersion(conn) >= 100000)
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{
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appendPQExpBufferStr(&query,
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" SELECT CURRENT_TIMESTAMP AS ts, "
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" pg_catalog.pg_last_wal_receive_lsn() AS last_wal_receive_lsn, "
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" pg_catalog.pg_last_wal_replay_lsn() AS last_wal_replay_lsn, "
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" pg_catalog.pg_last_xact_replay_timestamp() AS last_xact_replay_timestamp ");
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}
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else
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{
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appendPQExpBufferStr(&query,
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" SELECT CURRENT_TIMESTAMP AS ts, "
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" pg_catalog.pg_last_xlog_receive_location() AS last_wal_receive_lsn, "
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" pg_catalog.pg_last_xlog_replay_location() AS last_wal_replay_lsn, "
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" pg_catalog.pg_last_xact_replay_timestamp() AS last_xact_replay_timestamp ");
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}
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appendPQExpBufferStr(&query,
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" ) q ");
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log_verbose(LOG_DEBUG, "get_replication_info():\n%s", query.data);
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res = PQexec(conn, query.data);
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if (PQresultStatus(res) != PGRES_TUPLES_OK || !PQntuples(res))
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{
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log_db_error(conn, query.data, _("get_replication_info(): unable to execute query"));
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success = false;
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}
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else
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{
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strncpy(replication_info->current_timestamp, PQgetvalue(res, 0, 0), MAXLEN);
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replication_info->last_wal_receive_lsn = parse_lsn(PQgetvalue(res, 0, 1));
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replication_info->last_wal_replay_lsn = parse_lsn(PQgetvalue(res, 0, 2));
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strncpy(replication_info->last_xact_replay_timestamp, PQgetvalue(res, 0, 3), MAXLEN);
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replication_info->replication_lag_time = atoi(PQgetvalue(res, 0, 4));
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replication_info->receiving_streamed_wal = atobool(PQgetvalue(res, 0, 5));
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}
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termPQExpBuffer(&query);
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PQclear(res);
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return success;
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}
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int
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@@ -1570,57 +1493,6 @@ get_ready_archive_files(PGconn *conn, const char *data_directory)
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}
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int
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get_replication_lag_seconds(PGconn *conn)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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int lag_seconds = 0;
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initPQExpBuffer(&query);
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if (PQserverVersion(conn) >= 100000)
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{
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appendPQExpBufferStr(&query,
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" SELECT CASE WHEN (pg_catalog.pg_last_wal_receive_lsn() = pg_catalog.pg_last_wal_replay_lsn()) ");
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}
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else
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{
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appendPQExpBufferStr(&query,
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" SELECT CASE WHEN (pg_catalog.pg_last_xlog_receive_location() = pg_catalog.pg_last_xlog_replay_location()) ");
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}
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appendPQExpBufferStr(&query,
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" THEN 0 "
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" ELSE EXTRACT(epoch FROM (pg_catalog.clock_timestamp() - pg_catalog.pg_last_xact_replay_timestamp()))::INT "
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" END "
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" AS lag_seconds");
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res = PQexec(conn, query.data);
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log_verbose(LOG_DEBUG, "get_replication_lag_seconds():\n%s", query.data);
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termPQExpBuffer(&query);
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if (PQresultStatus(res) != PGRES_TUPLES_OK)
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{
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log_warning("%s", PQerrorMessage(conn));
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PQclear(res);
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/* XXX magic number */
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return -1;
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}
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if (!PQntuples(res))
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{
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return -1;
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}
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lag_seconds = atoi(PQgetvalue(res, 0, 0));
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PQclear(res);
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return lag_seconds;
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}
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bool
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identify_system(PGconn *repl_conn, t_system_identification *identification)
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@@ -3206,180 +3078,6 @@ update_node_record_slot_name(PGconn *primary_conn, int node_id, char *slot_name)
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}
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void
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get_node_replication_stats(PGconn *conn, t_node_info *node_info)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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initPQExpBuffer(&query);
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appendPQExpBufferStr(&query,
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" SELECT pg_catalog.current_setting('max_wal_senders')::INT AS max_wal_senders, "
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" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_stat_replication) AS attached_wal_receivers, ");
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/* no replication slots in PostgreSQL 9.3 */
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if (PQserverVersion(conn) < 90400)
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{
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appendPQExpBufferStr(&query,
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" 0 AS max_replication_slots, "
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" 0 AS total_replication_slots, "
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" 0 AS active_replication_slots, "
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" 0 AS inactive_replication_slots, ");
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}
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else
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{
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appendPQExpBufferStr(&query,
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" current_setting('max_replication_slots')::INT AS max_replication_slots, "
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" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_replication_slots) AS total_replication_slots, "
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" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_replication_slots WHERE active IS TRUE) AS active_replication_slots, "
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" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_replication_slots WHERE active IS FALSE) AS inactive_replication_slots, ");
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}
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appendPQExpBufferStr(&query,
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" pg_catalog.pg_is_in_recovery() AS in_recovery");
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log_verbose(LOG_DEBUG, "get_node_replication_stats():\n%s", query.data);
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res = PQexec(conn, query.data);
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if (PQresultStatus(res) != PGRES_TUPLES_OK)
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{
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log_warning(_("unable to retrieve node replication statistics"));
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log_detail("%s", PQerrorMessage(conn));
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log_detail("%s", query.data);
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termPQExpBuffer(&query);
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PQclear(res);
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return;
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}
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node_info->max_wal_senders = atoi(PQgetvalue(res, 0, 0));
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node_info->attached_wal_receivers = atoi(PQgetvalue(res, 0, 1));
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node_info->max_replication_slots = atoi(PQgetvalue(res, 0, 2));
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node_info->total_replication_slots = atoi(PQgetvalue(res, 0, 3));
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node_info->active_replication_slots = atoi(PQgetvalue(res, 0, 4));
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node_info->inactive_replication_slots = atoi(PQgetvalue(res, 0, 5));
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node_info->recovery_type = strcmp(PQgetvalue(res, 0, 6), "f") == 0 ? RECTYPE_PRIMARY : RECTYPE_STANDBY;
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termPQExpBuffer(&query);
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PQclear(res);
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return;
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}
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bool
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is_downstream_node_attached(PGconn *conn, char *node_name)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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int c = 0;
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initPQExpBuffer(&query);
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appendPQExpBuffer(&query,
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" SELECT pg_catalog.count(*) FROM pg_catalog.pg_stat_replication "
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" WHERE application_name = '%s'",
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node_name);
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res = PQexec(conn, query.data);
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if (PQresultStatus(res) != PGRES_TUPLES_OK)
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{
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log_verbose(LOG_WARNING, _("unable to query pg_stat_replication"));
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log_detail("%s", PQerrorMessage(conn));
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log_detail("%s", query.data);
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termPQExpBuffer(&query);
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PQclear(res);
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return false;
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}
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if (PQntuples(res) != 1)
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{
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log_verbose(LOG_WARNING, _("unexpected number of tuples (%i) returned"), PQntuples(res));
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termPQExpBuffer(&query);
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PQclear(res);
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return false;
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}
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c = atoi(PQgetvalue(res, 0, 0));
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termPQExpBuffer(&query);
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PQclear(res);
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if (c == 0)
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{
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log_verbose(LOG_WARNING, _("node \"%s\" not found in \"pg_stat_replication\""), node_name);
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return false;
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}
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if (c > 1)
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log_verbose(LOG_WARNING, _("multiple entries with \"application_name\" set to \"%s\" found in \"pg_stat_replication\""),
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node_name);
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return true;
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}
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void
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set_primary_last_seen(PGconn *conn)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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initPQExpBuffer(&query);
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appendPQExpBufferStr(&query,
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"SELECT repmgr.set_primary_last_seen()");
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res = PQexec(conn, query.data);
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if (PQresultStatus(res) != PGRES_TUPLES_OK)
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{
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log_db_error(conn, query.data, _("unable to execute repmgr.set_primary_last_seen()"));
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}
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termPQExpBuffer(&query);
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PQclear(res);
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}
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int
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get_primary_last_seen(PGconn *conn)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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int primary_last_seen = -1;
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initPQExpBuffer(&query);
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appendPQExpBufferStr(&query,
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"SELECT repmgr.get_primary_last_seen()");
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res = PQexec(conn, query.data);
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if (PQresultStatus(res) != PGRES_TUPLES_OK)
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{
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log_db_error(conn, query.data, _("unable to execute repmgr.get_primary_last_seen()"));
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}
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else
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{
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primary_last_seen = atoi(PQgetvalue(res, 0, 0));
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}
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termPQExpBuffer(&query);
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PQclear(res);
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return primary_last_seen;
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}
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void
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@@ -4904,6 +4602,7 @@ get_last_wal_receive_location(PGconn *conn)
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return ptr;
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}
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XLogRecPtr
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get_current_lsn(PGconn *conn)
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{
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@@ -4992,6 +4691,315 @@ get_current_lsn(PGconn *conn)
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return ptr;
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}
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void
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init_replication_info(ReplInfo *replication_info)
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{
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memset(replication_info->current_timestamp, 0, sizeof(replication_info->current_timestamp));
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replication_info->last_wal_receive_lsn = InvalidXLogRecPtr;
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replication_info->last_wal_replay_lsn = InvalidXLogRecPtr;
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memset(replication_info->last_xact_replay_timestamp, 0, sizeof(replication_info->last_xact_replay_timestamp));
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replication_info->replication_lag_time = 0;
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replication_info->receiving_streamed_wal = true;
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}
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bool
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get_replication_info(PGconn *conn, ReplInfo *replication_info)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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bool success = true;
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initPQExpBuffer(&query);
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appendPQExpBufferStr(&query,
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" SELECT ts, "
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" last_wal_receive_lsn, "
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" last_wal_replay_lsn, "
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" last_xact_replay_timestamp, "
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" CASE WHEN (last_wal_receive_lsn = last_wal_replay_lsn) "
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" THEN 0::INT "
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" ELSE "
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" EXTRACT(epoch FROM (pg_catalog.clock_timestamp() - last_xact_replay_timestamp))::INT "
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" END AS replication_lag_time, "
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" COALESCE(last_wal_receive_lsn, '0/0') >= last_wal_replay_lsn AS receiving_streamed_wal "
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" FROM ( ");
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if (PQserverVersion(conn) >= 100000)
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{
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appendPQExpBufferStr(&query,
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" SELECT CURRENT_TIMESTAMP AS ts, "
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" pg_catalog.pg_last_wal_receive_lsn() AS last_wal_receive_lsn, "
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" pg_catalog.pg_last_wal_replay_lsn() AS last_wal_replay_lsn, "
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" pg_catalog.pg_last_xact_replay_timestamp() AS last_xact_replay_timestamp ");
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}
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else
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{
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appendPQExpBufferStr(&query,
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" SELECT CURRENT_TIMESTAMP AS ts, "
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" pg_catalog.pg_last_xlog_receive_location() AS last_wal_receive_lsn, "
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" pg_catalog.pg_last_xlog_replay_location() AS last_wal_replay_lsn, "
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" pg_catalog.pg_last_xact_replay_timestamp() AS last_xact_replay_timestamp ");
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}
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appendPQExpBufferStr(&query,
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" ) q ");
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log_verbose(LOG_DEBUG, "get_replication_info():\n%s", query.data);
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res = PQexec(conn, query.data);
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if (PQresultStatus(res) != PGRES_TUPLES_OK || !PQntuples(res))
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{
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log_db_error(conn, query.data, _("get_replication_info(): unable to execute query"));
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success = false;
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}
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else
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{
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strncpy(replication_info->current_timestamp, PQgetvalue(res, 0, 0), MAXLEN);
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replication_info->last_wal_receive_lsn = parse_lsn(PQgetvalue(res, 0, 1));
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replication_info->last_wal_replay_lsn = parse_lsn(PQgetvalue(res, 0, 2));
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strncpy(replication_info->last_xact_replay_timestamp, PQgetvalue(res, 0, 3), MAXLEN);
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replication_info->replication_lag_time = atoi(PQgetvalue(res, 0, 4));
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replication_info->receiving_streamed_wal = atobool(PQgetvalue(res, 0, 5));
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}
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termPQExpBuffer(&query);
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PQclear(res);
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return success;
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}
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int
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get_replication_lag_seconds(PGconn *conn)
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{
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PQExpBufferData query;
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PGresult *res = NULL;
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int lag_seconds = 0;
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initPQExpBuffer(&query);
|
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|
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if (PQserverVersion(conn) >= 100000)
|
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{
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appendPQExpBufferStr(&query,
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" SELECT CASE WHEN (pg_catalog.pg_last_wal_receive_lsn() = pg_catalog.pg_last_wal_replay_lsn()) ");
|
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}
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else
|
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{
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appendPQExpBufferStr(&query,
|
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" SELECT CASE WHEN (pg_catalog.pg_last_xlog_receive_location() = pg_catalog.pg_last_xlog_replay_location()) ");
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}
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appendPQExpBufferStr(&query,
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" THEN 0 "
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" ELSE EXTRACT(epoch FROM (pg_catalog.clock_timestamp() - pg_catalog.pg_last_xact_replay_timestamp()))::INT "
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||||
" END "
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" AS lag_seconds");
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res = PQexec(conn, query.data);
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log_verbose(LOG_DEBUG, "get_replication_lag_seconds():\n%s", query.data);
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termPQExpBuffer(&query);
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if (PQresultStatus(res) != PGRES_TUPLES_OK)
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{
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log_warning("%s", PQerrorMessage(conn));
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PQclear(res);
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/* XXX magic number */
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return -1;
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}
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||||
|
||||
if (!PQntuples(res))
|
||||
{
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return -1;
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||||
}
|
||||
|
||||
lag_seconds = atoi(PQgetvalue(res, 0, 0));
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||||
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PQclear(res);
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return lag_seconds;
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||||
}
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||||
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||||
|
||||
void
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||||
get_node_replication_stats(PGconn *conn, t_node_info *node_info)
|
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{
|
||||
PQExpBufferData query;
|
||||
PGresult *res = NULL;
|
||||
|
||||
initPQExpBuffer(&query);
|
||||
|
||||
appendPQExpBufferStr(&query,
|
||||
" SELECT pg_catalog.current_setting('max_wal_senders')::INT AS max_wal_senders, "
|
||||
" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_stat_replication) AS attached_wal_receivers, ");
|
||||
|
||||
/* no replication slots in PostgreSQL 9.3 */
|
||||
if (PQserverVersion(conn) < 90400)
|
||||
{
|
||||
appendPQExpBufferStr(&query,
|
||||
" 0 AS max_replication_slots, "
|
||||
" 0 AS total_replication_slots, "
|
||||
" 0 AS active_replication_slots, "
|
||||
" 0 AS inactive_replication_slots, ");
|
||||
}
|
||||
else
|
||||
{
|
||||
appendPQExpBufferStr(&query,
|
||||
" current_setting('max_replication_slots')::INT AS max_replication_slots, "
|
||||
" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_replication_slots) AS total_replication_slots, "
|
||||
" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_replication_slots WHERE active IS TRUE) AS active_replication_slots, "
|
||||
" (SELECT pg_catalog.count(*) FROM pg_catalog.pg_replication_slots WHERE active IS FALSE) AS inactive_replication_slots, ");
|
||||
}
|
||||
|
||||
|
||||
appendPQExpBufferStr(&query,
|
||||
" pg_catalog.pg_is_in_recovery() AS in_recovery");
|
||||
|
||||
log_verbose(LOG_DEBUG, "get_node_replication_stats():\n%s", query.data);
|
||||
|
||||
res = PQexec(conn, query.data);
|
||||
|
||||
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
||||
{
|
||||
log_warning(_("unable to retrieve node replication statistics"));
|
||||
log_detail("%s", PQerrorMessage(conn));
|
||||
log_detail("%s", query.data);
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
node_info->max_wal_senders = atoi(PQgetvalue(res, 0, 0));
|
||||
node_info->attached_wal_receivers = atoi(PQgetvalue(res, 0, 1));
|
||||
node_info->max_replication_slots = atoi(PQgetvalue(res, 0, 2));
|
||||
node_info->total_replication_slots = atoi(PQgetvalue(res, 0, 3));
|
||||
node_info->active_replication_slots = atoi(PQgetvalue(res, 0, 4));
|
||||
node_info->inactive_replication_slots = atoi(PQgetvalue(res, 0, 5));
|
||||
node_info->recovery_type = strcmp(PQgetvalue(res, 0, 6), "f") == 0 ? RECTYPE_PRIMARY : RECTYPE_STANDBY;
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
bool
|
||||
is_downstream_node_attached(PGconn *conn, char *node_name)
|
||||
{
|
||||
PQExpBufferData query;
|
||||
PGresult *res = NULL;
|
||||
int c = 0;
|
||||
|
||||
initPQExpBuffer(&query);
|
||||
|
||||
appendPQExpBuffer(&query,
|
||||
" SELECT pg_catalog.count(*) FROM pg_catalog.pg_stat_replication "
|
||||
" WHERE application_name = '%s'",
|
||||
node_name);
|
||||
|
||||
res = PQexec(conn, query.data);
|
||||
|
||||
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
||||
{
|
||||
log_verbose(LOG_WARNING, _("unable to query pg_stat_replication"));
|
||||
log_detail("%s", PQerrorMessage(conn));
|
||||
log_detail("%s", query.data);
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
if (PQntuples(res) != 1)
|
||||
{
|
||||
log_verbose(LOG_WARNING, _("unexpected number of tuples (%i) returned"), PQntuples(res));
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
c = atoi(PQgetvalue(res, 0, 0));
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
if (c == 0)
|
||||
{
|
||||
log_verbose(LOG_WARNING, _("node \"%s\" not found in \"pg_stat_replication\""), node_name);
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
if (c > 1)
|
||||
log_verbose(LOG_WARNING, _("multiple entries with \"application_name\" set to \"%s\" found in \"pg_stat_replication\""),
|
||||
node_name);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void
|
||||
set_primary_last_seen(PGconn *conn)
|
||||
{
|
||||
PQExpBufferData query;
|
||||
PGresult *res = NULL;
|
||||
|
||||
initPQExpBuffer(&query);
|
||||
|
||||
appendPQExpBufferStr(&query,
|
||||
"SELECT repmgr.set_primary_last_seen()");
|
||||
|
||||
res = PQexec(conn, query.data);
|
||||
|
||||
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
||||
{
|
||||
log_db_error(conn, query.data, _("unable to execute repmgr.set_primary_last_seen()"));
|
||||
}
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
get_primary_last_seen(PGconn *conn)
|
||||
{
|
||||
PQExpBufferData query;
|
||||
PGresult *res = NULL;
|
||||
int primary_last_seen = -1;
|
||||
|
||||
initPQExpBuffer(&query);
|
||||
|
||||
appendPQExpBufferStr(&query,
|
||||
"SELECT repmgr.get_primary_last_seen()");
|
||||
|
||||
res = PQexec(conn, query.data);
|
||||
|
||||
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
||||
{
|
||||
log_db_error(conn, query.data, _("unable to execute repmgr.get_primary_last_seen()"));
|
||||
}
|
||||
else
|
||||
{
|
||||
primary_last_seen = atoi(PQgetvalue(res, 0, 0));
|
||||
}
|
||||
|
||||
termPQExpBuffer(&query);
|
||||
PQclear(res);
|
||||
|
||||
return primary_last_seen;
|
||||
}
|
||||
|
||||
|
||||
/* ============= */
|
||||
/* BDR functions */
|
||||
/* ============= */
|
||||
|
||||
Reference in New Issue
Block a user