summaryrefslogtreecommitdiffstats
path: root/pkg/driver/driver.go
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--pkg/driver/driver.go114
1 files changed, 0 insertions, 114 deletions
diff --git a/pkg/driver/driver.go b/pkg/driver/driver.go
deleted file mode 100644
index f529db4..0000000
--- a/pkg/driver/driver.go
+++ /dev/null
@@ -1,114 +0,0 @@
-package driver
-
-import (
- "context"
- "database/sql"
- "database/sql/driver"
- "github.com/go-sql-driver/mysql"
- "github.com/icinga/icingadb/pkg/backoff"
- "github.com/icinga/icingadb/pkg/icingaredis/telemetry"
- "github.com/icinga/icingadb/pkg/logging"
- "github.com/icinga/icingadb/pkg/retry"
- "github.com/jmoiron/sqlx"
- "github.com/pkg/errors"
- "go.uber.org/zap"
- "time"
-)
-
-const MySQL = "icingadb-mysql"
-const PostgreSQL = "icingadb-pgsql"
-
-var timeout = time.Minute * 5
-
-// RetryConnector wraps driver.Connector with retry logic.
-type RetryConnector struct {
- driver.Connector
- driver Driver
-}
-
-// Connect implements part of the driver.Connector interface.
-func (c RetryConnector) Connect(ctx context.Context) (driver.Conn, error) {
- var conn driver.Conn
- err := errors.Wrap(retry.WithBackoff(
- ctx,
- func(ctx context.Context) (err error) {
- conn, err = c.Connector.Connect(ctx)
- return
- },
- shouldRetry,
- backoff.NewExponentialWithJitter(time.Millisecond*128, time.Minute*1),
- retry.Settings{
- Timeout: timeout,
- OnError: func(_ time.Duration, _ uint64, err, lastErr error) {
- telemetry.UpdateCurrentDbConnErr(err)
-
- if lastErr == nil || err.Error() != lastErr.Error() {
- c.driver.Logger.Warnw("Can't connect to database. Retrying", zap.Error(err))
- }
- },
- OnSuccess: func(elapsed time.Duration, attempt uint64, _ error) {
- telemetry.UpdateCurrentDbConnErr(nil)
-
- if attempt > 0 {
- c.driver.Logger.Infow("Reconnected to database",
- zap.Duration("after", elapsed), zap.Uint64("attempts", attempt+1))
- }
- },
- },
- ), "can't connect to database")
- return conn, err
-}
-
-// Driver implements part of the driver.Connector interface.
-func (c RetryConnector) Driver() driver.Driver {
- return c.driver
-}
-
-// Driver wraps a driver.Driver that also must implement driver.DriverContext with logging capabilities and provides our RetryConnector.
-type Driver struct {
- ctxDriver
- Logger *logging.Logger
-}
-
-// OpenConnector implements the DriverContext interface.
-func (d Driver) OpenConnector(name string) (driver.Connector, error) {
- c, err := d.ctxDriver.OpenConnector(name)
- if err != nil {
- return nil, err
- }
-
- return &RetryConnector{
- driver: d,
- Connector: c,
- }, nil
-}
-
-// Register makes our database Driver available under the name "icingadb-*sql".
-func Register(logger *logging.Logger) {
- sql.Register(MySQL, &Driver{ctxDriver: &mysql.MySQLDriver{}, Logger: logger})
- sql.Register(PostgreSQL, &Driver{ctxDriver: PgSQLDriver{}, Logger: logger})
- _ = mysql.SetLogger(mysqlLogger(func(v ...interface{}) { logger.Debug(v...) }))
- sqlx.BindDriver(PostgreSQL, sqlx.DOLLAR)
-}
-
-// ctxDriver helps ensure that we only support drivers that implement driver.Driver and driver.DriverContext.
-type ctxDriver interface {
- driver.Driver
- driver.DriverContext
-}
-
-// mysqlLogger is an adapter that allows ordinary functions to be used as a logger for mysql.SetLogger.
-type mysqlLogger func(v ...interface{})
-
-// Print implements the mysql.Logger interface.
-func (log mysqlLogger) Print(v ...interface{}) {
- log(v)
-}
-
-func shouldRetry(err error) bool {
- if errors.Is(err, driver.ErrBadConn) {
- return true
- }
-
- return retry.Retryable(err)
-}