[MM-25673] Upgrades and migrations to start using master gorp (#14823)

Database changes needed to reflect gorp master changes

store/sqlstore/upgrade.go

@@ -4,6 +4,7 @@
 package sqlstore
 
 import (
+	"database/sql"
 	"encoding/json"
 	"os"
 	"strings"
@@ -838,9 +839,74 @@ func upgradeDatabaseToVersion527(sqlStore SqlStore) {
 func upgradeDatabaseToVersion528(sqlStore SqlStore) {
 	// TODO: uncomment when the time arrive to upgrade the DB for 5.28
 	//if shouldPerformUpgrade(sqlStore, VERSION_5_27_0, VERSION_5_28_0) {
+	if err := precheckMigrationToVersion528(sqlStore); err != nil {
+		mlog.Error("Error upgrading DB schema to 5.28.0", mlog.Err(err))
+		os.Exit(EXIT_GENERIC_FAILURE)
+	}
+
 	sqlStore.CreateColumnIfNotExistsNoDefault("Commands", "PluginId", "VARCHAR(190)", "VARCHAR(190)")
 	sqlStore.GetMaster().Exec("UPDATE Commands SET PluginId = '' WHERE PluginId IS NULL")
 
-	// saveSchemaVersion(sqlStore, VERSION_5_28_0)
+	sqlStore.AlterColumnTypeIfExists("Teams", "Type", "VARCHAR(255)", "VARCHAR(255)")
+	sqlStore.AlterColumnTypeIfExists("Teams", "SchemeId", "VARCHAR(26)", "VARCHAR(26)")
+	sqlStore.AlterColumnTypeIfExists("IncomingWebhooks", "Username", "varchar(255)", "varchar(255)")
+	sqlStore.AlterColumnTypeIfExists("IncomingWebhooks", "IconURL", "text", "varchar(1024)")
+
+	//saveSchemaVersion(sqlStore, VERSION_5_28_0)
 	//}
 }
+
+func precheckMigrationToVersion528(sqlStore SqlStore) error {
+	teamsQuery, _, err := sqlStore.getQueryBuilder().Select(`COALESCE(SUM(CASE
+				WHEN CHAR_LENGTH(SchemeId) > 26 THEN 1
+				ELSE 0
+			END),0) as schemeidwrong,
+			COALESCE(SUM(CASE
+				WHEN CHAR_LENGTH(Type) > 255 THEN 1
+				ELSE 0
+			END),0) as typewrong`).
+		From("Teams").ToSql()
+	if err != nil {
+		return err
+	}
+	webhooksQuery, _, err := sqlStore.getQueryBuilder().Select(`COALESCE(SUM(CASE
+				WHEN CHAR_LENGTH(Username) > 255 THEN 1
+				ELSE 0
+			END),0) as usernamewrong,
+			COALESCE(SUM(CASE
+				WHEN CHAR_LENGTH(IconURL) > 1024 THEN 1
+				ELSE 0
+			END),0) as iconurlwrong`).
+		From("IncomingWebhooks").ToSql()
+	if err != nil {
+		return err
+	}
+
+	var schemeIdWrong int
+	var typeWrong int
+	row := sqlStore.GetMaster().Db.QueryRow(teamsQuery)
+	if err = row.Scan(&schemeIdWrong, &typeWrong); err != nil && err != sql.ErrNoRows {
+		return err
+	} else if err == nil && schemeIdWrong > 0 {
+		return errors.New("Migration failure: " +
+			"Teams column SchemeId has data larger that 26 characters")
+	} else if err == nil && typeWrong > 0 {
+		return errors.New("Migration failure: " +
+			"Teams column Type has data larger that 255 characters")
+	}
+
+	var usernameWrong int
+	var iconURLWrong int
+	row = sqlStore.GetMaster().Db.QueryRow(webhooksQuery)
+	if err = row.Scan(&usernameWrong, &iconURLWrong); err != nil && err != sql.ErrNoRows {
+		mlog.Error("Error fetching IncomingWebhooks columns data", mlog.Err(err))
+	} else if err == nil && usernameWrong > 0 {
+		return errors.New("Migration failure: " +
+			"IncomingWebhooks column Username has data larger that 255 characters")
+	} else if err == nil && iconURLWrong > 0 {
+		return errors.New("Migration failure: " +
+			"IncomingWebhooks column IconURL has data larger that 1024 characters")
+	}
+
+	return nil
+}