postgres

type Config struct {
	Port     int    `env:"POSTGRES_PORT" envDefault:"5432"`
	Host     string `env:"POSTGRES_HOST" envDefault:"postgres"`
	Password string `env:"POSTGRES_PASSWORD" envDefault:"mysecretpassword"`
	User     string `env:"POSTGRES_USER" envDefault:"postgres"`
	Database string `env:"POSTGRES_DB" envDefault:"postgres"`

	// ApplicationName is the application name. Used in logs on Pg side.
	// Only availaible from pg-9.0.
	ApplicationName string `env:"POSTGRES_APPLICATION_NAME" envDefault:"-"`
	// Maximum number of retries before giving up.
	MaxRetries int `env:"POSTGRES_MAX_RETRIES" envDefault:"5"`
	// Whether to retry queries cancelled because of statement_timeout.
	RetryStatementTimeout bool `env:"POSTGRES_RETRY_STATEMENT_TIMEOUT" envDefault:"false"`
	// Minimum backoff between each retry.
	// -1 disables backoff.
	MinRetryBackoff time.Duration `env:"POSTGRES_MIN_RETRY_BACKOFF" envDefault:"250ms"`
	// Maximum backoff between each retry.
	// -1 disables backoff.
	MaxRetryBackoff time.Duration `env:"POSTGRES_MAX_RETRY_BACKOFF" envDefault:"4s"`
	// Dial timeout for establishing new connections.
	DialTimeout time.Duration `env:"POSTGRES_DIAL_TIMEOUT" envDefault:"5s"`
	// Timeout for socket reads. If reached, commands will fail
	// with a timeout instead of blocking.
	ReadTimeout time.Duration `env:"POSTGRES_READ_TIMEOUT" envDefault:"30s"`
	// Timeout for socket writes. If reached, commands will fail
	// with a timeout instead of blocking.
	WriteTimeout time.Duration `env:"POSTGRES_WRITE_TIMEOUT" envDefault:"30s"`
	// Maximum number of socket connections.
	PoolSize int `env:"POSTGRES_POOL_SIZE" envDefault:"100"`
	// Minimum number of idle connections which is useful when establishing
	// new connection is slow.
	MinIdleConns int `env:"POSTGRES_MIN_IDLE_CONNECTIONS" envDefault:"10"`
	// Connection age at which client retires (closes) the connection.
	// It is useful with proxies like PgBouncer and HAProxy.
	MaxConnAge time.Duration `env:"POSTGRES_MAX_CONN_AGE" envDefault:"30m"`
	// Time for which client waits for free connection if all
	// connections are busy before returning an error.
	PoolTimeout time.Duration `env:"POSTGRES_POOL_TIMEOUT" envDefault:"31s"`
	// Amount of time after which client closes idle connections.
	// Should be less than server's timeout.
	// -1 disables idle timeout check.
	IdleTimeout time.Duration `env:"POSTGRES_IDLE_TIMEOUT" envDefault:"5m"`
	// Frequency of idle checks made by idle connections reaper.
	// -1 disables idle connections reaper,
	// but idle connections are still discarded by the client
	// if IdleTimeout is set.
	IdleCheckFrequency time.Duration `env:"POSTGRES_IDLE_CHECK_FREQUENCY" envDefault:"1m"`
	// Name of the Table that is created to try if database is writeable
	HealthCheckTableName string `env:"POSTGRES_HEALTH_CHECK_TABLE_NAME" envDefault:"healthcheck"`
	// Amount of time to cache the last health check result
	HealthCheckResultTTL time.Duration `env:"POSTGRES_HEALTH_CHECK_RESULT_TTL" envDefault:"10s"`
	// Indicator whether write (insert,update,delete) queries should be logged
	LogWrite bool `env:"POSTGRES_LOG_WRITES" envDefault:"true"`
	// Indicator whether read (select) queries should be logged
	LogRead bool `env:"POSTGRES_LOG_READS" envDefault:"false"`
}

type ConfigOption func(cfg *Config)

type ConnectionPoolMetrics struct {
	// contains filtered or unexported fields
}

type HealthCheck struct {
	Pool postgresQueryExecutor
	// contains filtered or unexported fields
}

type MetricsAdapter struct {
	// contains filtered or unexported fields
}

type OpenTracingAdapter struct{}

type QueryLogger struct{}