sqlstore: add support for checking if error is constraint validation error

Gopkg.lock

@@ -20,6 +20,12 @@
   revision = "7677a1d7c1137cd3dd5ba7a076d0c898a1ef4520"
 
 [[projects]]
+  branch = "master"
+  name = "github.com/VividCortex/mysqlerr"
+  packages = ["."]
+  revision = "6c6b55f8796f578c870b7e19bafb16103bc40095"
+
+[[projects]]
   name = "github.com/aws/aws-sdk-go"
   packages = [
     "aws",
@@ -673,6 +679,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "81a37e747b875cf870c1b9486fa3147e704dea7db8ba86f7cb942d3ddc01d3e3"
+  inputs-digest = "6e9458f912a5f0eb3430b968f1b4dbc4e3b7671b282cf4fe1573419a6d9ba0d4"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -203,3 +203,7 @@ ignored = [
 [[constraint]]
   name = "github.com/denisenkom/go-mssqldb"
   revision = "270bc3860bb94dd3a3ffd047377d746c5e276726"
+
+[[constraint]]
+  name = "github.com/VividCortex/mysqlerr"
+  branch = "master"

pkg/services/sqlstore/alert_notification.go

@@ -240,25 +240,15 @@ func InsertAlertNotificationState(ctx context.Context, cmd *m.InsertAlertNotific
 			State:      cmd.State,
 		}
 
-		_, err := sess.Insert(notificationState)
-
-		if err == nil {
-			return nil
-		}
-
-		uniqenessIndexFailureCodes := []string{
-			"UNIQUE constraint failed",
-			"pq: duplicate key value violates unique constraint",
-			"Error 1062: Duplicate entry ",
-		}
-
-		for _, code := range uniqenessIndexFailureCodes {
-			if strings.HasPrefix(err.Error(), code) {
+		if _, err := sess.Insert(notificationState); err != nil {
+			if dialect.IsUniqueConstraintViolation(err) {
 				return m.ErrAlertNotificationStateAlreadyExist
 			}
-		}
 
 			return err
+		}
+
+		return nil
 	})
 }
 

pkg/services/sqlstore/migrator/dialect.go

@@ -44,6 +44,8 @@ type Dialect interface {
 
 	CleanDB() error
 	NoOpSql() string
+
+	IsUniqueConstraintViolation(err error) bool
 }
 
 func NewDialect(engine *xorm.Engine) Dialect {

pkg/services/sqlstore/migrator/mysql_dialect.go

@@ -5,6 +5,8 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/VividCortex/mysqlerr"
+	"github.com/go-sql-driver/mysql"
 	"github.com/go-xorm/xorm"
 )
 
@@ -125,3 +127,13 @@ func (db *Mysql) CleanDB() error {
 
 	return nil
 }
+
+func (db *Mysql) IsUniqueConstraintViolation(err error) bool {
+	if driverErr, ok := err.(*mysql.MySQLError); ok {
+		if driverErr.Number == mysqlerr.ER_DUP_ENTRY {
+			return true
+		}
+	}
+
+	return false
+}

pkg/services/sqlstore/migrator/postgres_dialect.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/go-xorm/xorm"
+	"github.com/lib/pq"
 )
 
 type Postgres struct {
@@ -136,3 +137,13 @@ func (db *Postgres) CleanDB() error {
 
 	return nil
 }
+
+func (db *Postgres) IsUniqueConstraintViolation(err error) bool {
+	if driverErr, ok := err.(*pq.Error); ok {
+		if driverErr.Code == "23505" {
+			return true
+		}
+	}
+
+	return false
+}

pkg/services/sqlstore/migrator/sqlite_dialect.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"github.com/go-xorm/xorm"
+	sqlite3 "github.com/mattn/go-sqlite3"
 )
 
 type Sqlite3 struct {
@@ -82,3 +83,13 @@ func (db *Sqlite3) DropIndexSql(tableName string, index *Index) string {
 func (db *Sqlite3) CleanDB() error {
 	return nil
 }
+
+func (db *Sqlite3) IsUniqueConstraintViolation(err error) bool {
+	if driverErr, ok := err.(sqlite3.Error); ok {
+		if driverErr.ExtendedCode == sqlite3.ErrConstraintUnique {
+			return true
+		}
+	}
+
+	return false
+}

vendor/github.com/VividCortex/mysqlerr/LICENSE

+MIT License
+
+Copyright (c) 2017 VividCortex
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.