Documentation
¶
Index ¶
- Constants
- func ActiveConnections(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func AlterDatabase(pgPool *pgxpool.Pool, dbname string, name string, value string) error
- func AlterSystem(pgPool *pgxpool.Pool, name string, value string) error
- func ArtificiallyFailingQueries(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func Autovacuum(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func BufferCacheHitRatio(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func DataDirectory(pgPool *pgxpool.Pool) (string, error)
- func DatabaseSize(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func DetectConfigFromConfigFile() bool
- func DetectConfigFromEnv() bool
- func GetActiveConfig(pool *pgxpool.Pool, ctx context.Context, logger *logrus.Logger) (agent.ConfigArraySchema, error)
- func MaxConnections(pgPool *pgxpool.Pool) (uint32, error)
- func PGStatStatements(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func PGVersion(pgPool *pgxpool.Pool) (string, error)
- func ReloadConfig(pgPool *pgxpool.Pool) error
- func Select1(pgPool *pgxpool.Pool) error
- func TransactionsPerSecond(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func Uptime(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func WaitEvents(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
- func WaitPostgresReady(pgPool *pgxpool.Pool) error
- type Config
Constants ¶
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const ActiveConnectionsQuery = `
/*dbtune*/
SELECT COUNT(*) AS active_connections
FROM pg_stat_activity
WHERE state = 'active'
`
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const AlterDatabaseQuery = `
/*dbtune*/
ALTER DATABASE %s SET %s = %s;
`
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const AlterSystemQuery = `
/*dbtune*/
ALTER SYSTEM SET %s = %s;
`
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const AutovacuumQuery = `
/*dbtune*/
SELECT COUNT(*) FROM pg_stat_activity WHERE query LIKE 'autovacuum:%';
`
https://stackoverflow.com/a/25012622
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const BufferCacheHitRatioQuery = `` /* 149-byte string literal not displayed */
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const (
DEFAULT_CONFIG_KEY = "postgresql"
)
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const DataDirectoryQuery = `
/*dbtune*/
SHOW data_directory;
`
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const DatabaseSizeQuery = `
/*dbtune*/
SELECT sum(pg_database_size(datname)) as total_size_bytes FROM pg_database;
`
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const MaxConnectionsQuery = `
/*dbtune*/
SELECT setting::integer FROM pg_settings WHERE name = 'max_connections';
`
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const PGVersionQuery = `
/*dbtune*/
SELECT version();
`
PGVersion returns the version of the PostgreSQL instance
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const PgStatStatementsQuery = `` /* 322-byte string literal not displayed */
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const ReloadConfigQuery = `
/*dbtune*/
SELECT pg_reload_conf();
`
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const SELECT_NON_NUMERIC_SETTINGS = `
/*dbtune*/
SELECT name, setting, unit, vartype, context
FROM pg_settings
WHERE vartype NOT IN ('real', 'integer');
`
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const SELECT_NUMERIC_SETTINGS = `` /* 138-byte string literal not displayed */
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const Select1Query = `
/*dbtune*/
SELECT 1;
`
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const SleepQuery = `
/*dbtune*/
SELECT pg_sleep(1000000);
`
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const TransactionsPerSecondQuery = `
/*dbtune*/
SELECT SUM(xact_commit)::bigint
AS server_xact_commits
FROM pg_stat_database;
`
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const UptimeQuery = `
/*dbtune*/
SELECT EXTRACT(EPOCH FROM (current_timestamp - pg_postmaster_start_time())) / 60 as uptime_minutes;
`
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const WaitEventsQuery = `` /* 690-byte string literal not displayed */
Variables ¶
This section is empty.
Functions ¶
func ActiveConnections ¶
func AlterDatabase ¶
func Autovacuum ¶
func BufferCacheHitRatio ¶
func BufferCacheHitRatio(pgPool *pgxpool.Pool) func(ctx context.Context, state *agent.MetricsState) error
BufferCacheHitRatio returns the buffer cache hit ratio. The current implementation gets only the hit ratio for the current database, we intentionally avoid aggregating the hit ratio for all databases, as this may add much noise from unused DBs.
func DatabaseSize ¶
DatabaseSize returns the size of all the databases combined in bytes
func DetectConfigFromConfigFile ¶
func DetectConfigFromConfigFile() bool
func DetectConfigFromEnv ¶
func DetectConfigFromEnv() bool
func GetActiveConfig ¶
func PGStatStatements ¶
func ReloadConfig ¶
func TransactionsPerSecond ¶
func WaitEvents ¶
func WaitPostgresReady ¶
Types ¶
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