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databasemiddleware.go
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databasemiddleware.go
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package dbplugin
import (
"context"
"time"
metrics "github.com/armon/go-metrics"
log "github.com/mgutz/logxi/v1"
)
// ---- Tracing Middleware Domain ----
// databaseTracingMiddleware wraps a implementation of Database and executes
// trace logging on function call.
type databaseTracingMiddleware struct {
next Database
logger log.Logger
typeStr string
transport string
}
func (mw *databaseTracingMiddleware) Type() (string, error) {
return mw.next.Type()
}
func (mw *databaseTracingMiddleware) CreateUser(ctx context.Context, statements Statements, usernameConfig UsernameConfig, expiration time.Time) (username string, password string, err error) {
defer func(then time.Time) {
mw.logger.Trace("database", "operation", "CreateUser", "status", "finished", "type", mw.typeStr, "transport", mw.transport, "err", err, "took", time.Since(then))
}(time.Now())
mw.logger.Trace("database", "operation", "CreateUser", "status", "started", "type", mw.typeStr, "transport", mw.transport)
return mw.next.CreateUser(ctx, statements, usernameConfig, expiration)
}
func (mw *databaseTracingMiddleware) RenewUser(ctx context.Context, statements Statements, username string, expiration time.Time) (err error) {
defer func(then time.Time) {
mw.logger.Trace("database", "operation", "RenewUser", "status", "finished", "type", mw.typeStr, "transport", mw.transport, "err", err, "took", time.Since(then))
}(time.Now())
mw.logger.Trace("database", "operation", "RenewUser", "status", "started", mw.typeStr, "transport", mw.transport)
return mw.next.RenewUser(ctx, statements, username, expiration)
}
func (mw *databaseTracingMiddleware) RevokeUser(ctx context.Context, statements Statements, username string) (err error) {
defer func(then time.Time) {
mw.logger.Trace("database", "operation", "RevokeUser", "status", "finished", "type", mw.typeStr, "transport", mw.transport, "err", err, "took", time.Since(then))
}(time.Now())
mw.logger.Trace("database", "operation", "RevokeUser", "status", "started", "type", mw.typeStr, "transport", mw.transport)
return mw.next.RevokeUser(ctx, statements, username)
}
func (mw *databaseTracingMiddleware) Initialize(ctx context.Context, conf map[string]interface{}, verifyConnection bool) (err error) {
defer func(then time.Time) {
mw.logger.Trace("database", "operation", "Initialize", "status", "finished", "type", mw.typeStr, "transport", mw.transport, "verify", verifyConnection, "err", err, "took", time.Since(then))
}(time.Now())
mw.logger.Trace("database", "operation", "Initialize", "status", "started", "type", mw.typeStr, "transport", mw.transport)
return mw.next.Initialize(ctx, conf, verifyConnection)
}
func (mw *databaseTracingMiddleware) Close() (err error) {
defer func(then time.Time) {
mw.logger.Trace("database", "operation", "Close", "status", "finished", "type", mw.typeStr, "transport", mw.transport, "err", err, "took", time.Since(then))
}(time.Now())
mw.logger.Trace("database", "operation", "Close", "status", "started", "type", mw.typeStr, "transport", mw.transport)
return mw.next.Close()
}
// ---- Metrics Middleware Domain ----
// databaseMetricsMiddleware wraps an implementation of Databases and on
// function call logs metrics about this instance.
type databaseMetricsMiddleware struct {
next Database
typeStr string
}
func (mw *databaseMetricsMiddleware) Type() (string, error) {
return mw.next.Type()
}
func (mw *databaseMetricsMiddleware) CreateUser(ctx context.Context, statements Statements, usernameConfig UsernameConfig, expiration time.Time) (username string, password string, err error) {
defer func(now time.Time) {
metrics.MeasureSince([]string{"database", "CreateUser"}, now)
metrics.MeasureSince([]string{"database", mw.typeStr, "CreateUser"}, now)
if err != nil {
metrics.IncrCounter([]string{"database", "CreateUser", "error"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "CreateUser", "error"}, 1)
}
}(time.Now())
metrics.IncrCounter([]string{"database", "CreateUser"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "CreateUser"}, 1)
return mw.next.CreateUser(ctx, statements, usernameConfig, expiration)
}
func (mw *databaseMetricsMiddleware) RenewUser(ctx context.Context, statements Statements, username string, expiration time.Time) (err error) {
defer func(now time.Time) {
metrics.MeasureSince([]string{"database", "RenewUser"}, now)
metrics.MeasureSince([]string{"database", mw.typeStr, "RenewUser"}, now)
if err != nil {
metrics.IncrCounter([]string{"database", "RenewUser", "error"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "RenewUser", "error"}, 1)
}
}(time.Now())
metrics.IncrCounter([]string{"database", "RenewUser"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "RenewUser"}, 1)
return mw.next.RenewUser(ctx, statements, username, expiration)
}
func (mw *databaseMetricsMiddleware) RevokeUser(ctx context.Context, statements Statements, username string) (err error) {
defer func(now time.Time) {
metrics.MeasureSince([]string{"database", "RevokeUser"}, now)
metrics.MeasureSince([]string{"database", mw.typeStr, "RevokeUser"}, now)
if err != nil {
metrics.IncrCounter([]string{"database", "RevokeUser", "error"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "RevokeUser", "error"}, 1)
}
}(time.Now())
metrics.IncrCounter([]string{"database", "RevokeUser"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "RevokeUser"}, 1)
return mw.next.RevokeUser(ctx, statements, username)
}
func (mw *databaseMetricsMiddleware) Initialize(ctx context.Context, conf map[string]interface{}, verifyConnection bool) (err error) {
defer func(now time.Time) {
metrics.MeasureSince([]string{"database", "Initialize"}, now)
metrics.MeasureSince([]string{"database", mw.typeStr, "Initialize"}, now)
if err != nil {
metrics.IncrCounter([]string{"database", "Initialize", "error"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "Initialize", "error"}, 1)
}
}(time.Now())
metrics.IncrCounter([]string{"database", "Initialize"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "Initialize"}, 1)
return mw.next.Initialize(ctx, conf, verifyConnection)
}
func (mw *databaseMetricsMiddleware) Close() (err error) {
defer func(now time.Time) {
metrics.MeasureSince([]string{"database", "Close"}, now)
metrics.MeasureSince([]string{"database", mw.typeStr, "Close"}, now)
if err != nil {
metrics.IncrCounter([]string{"database", "Close", "error"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "Close", "error"}, 1)
}
}(time.Now())
metrics.IncrCounter([]string{"database", "Close"}, 1)
metrics.IncrCounter([]string{"database", mw.typeStr, "Close"}, 1)
return mw.next.Close()
}