[patch] bugfix error assertion

internal/db/rdb/mysql/mysql.go

@@ -135,7 +135,16 @@ func (m *mySQLClient) Ping(ctx context.Context) (err error) {
 	for {
 		select {
 		case <-pctx.Done():
-			return errors.Wrap(errors.Wrap(err, errors.ErrMySQLConnectionPingFailed.Error()), ctx.Err().Error())
+			if err != nil {
+				err = errors.Wrap(errors.ErrMySQLConnectionPingFailed, err.Error())
+			} else {
+				err = errors.ErrMySQLConnectionPingFailed
+			}
+			cerr := ctx.Err()
+			if cerr != nil{
+				err = errors.Wrap(err, cerr.Error())
+			}
+			return err
 		case <-tick.C:
 			err = m.session.PingContext(ctx)
 			if err == nil {

internal/errors/blob.go

@@ -45,7 +45,8 @@ func (e *ErrBlobNoSuchBucket) Unwrap() error {
 }
 
 func IsErrBlobNoSuchBucket(err error) bool {
-	return As(err, &ErrBlobNoSuchBucket{})
+	target := new(ErrBlobNoSuchBucket)
+	return As(err, &target)
 }
 
 type ErrBlobNoSuchKey struct {
@@ -61,5 +62,6 @@ func (e *ErrBlobNoSuchKey) Unwrap() error {
 }
 
 func IsErrBlobNoSuchKey(err error) bool {
-	return As(err, &ErrBlobNoSuchKey{})
+	target := new(ErrBlobNoSuchKey)
+	return As(err, &target)
 }

internal/errors/cassandra.go

@@ -79,7 +79,8 @@ func (e *ErrCassandraNotFoundIdentity) Unwrap() error {
 }
 
 func IsErrCassandraNotFound(err error) bool {
-	return As(err, &ErrCassandraNotFoundIdentity{})
+	target := new(ErrCassandraNotFoundIdentity)
+	return As(err, &target)
 }
 
 type ErrCassandraUnavailableIdentity struct {
@@ -95,5 +96,6 @@ func (e *ErrCassandraUnavailableIdentity) Unwrap() error {
 }
 
 func IsErrCassandraUnavailable(err error) bool {
-	return As(err, &ErrCassandraUnavailableIdentity{})
+	target := new(ErrCassandraUnavailableIdentity)
+	return As(err, &target)
 }

internal/errors/mysql.go

@@ -57,7 +57,8 @@ func (e *ErrMySQLNotFoundIdentity) Unwrap() error {
 }
 
 func IsErrMySQLNotFound(err error) bool {
-	return As(err, &ErrMySQLNotFoundIdentity{})
+	target := new(ErrMySQLNotFoundIdentity)
+	return As(err, &target)
 }
 
 type ErrMySQLInvalidArgumentIdentity struct {
@@ -73,5 +74,6 @@ func (e *ErrMySQLInvalidArgumentIdentity) Unwrap() error {
 }
 
 func IsErrMySQLInvalidArgument(err error) bool {
-	return As(err, &ErrMySQLInvalidArgumentIdentity{})
+	target := new(ErrMySQLInvalidArgumentIdentity)
+	return As(err, &target)
 }

internal/errors/redis.go

@@ -68,5 +68,6 @@ func (e *ErrRedisNotFoundIdentity) Unwrap() error {
 }
 
 func IsErrRedisNotFound(err error) bool {
-	return As(err, &ErrRedisNotFoundIdentity{})
+	target := new(ErrRedisNotFoundIdentity)
+	return As(err, &target)
 }

pkg/meta/cassandra/service/cassandra.go

@@ -116,8 +116,7 @@ func (c *client) GetMultiple(keys ...string) (vals []string, err error) {
 		}
 		vals = append(vals, "")
 		if err != nil {
-			err = errors.Wrap(err, errors.ErrCassandraNotFound(key).Error())
-
+			err = errors.Wrap(errors.ErrCassandraNotFound(key), err.Error())
 			continue
 		}
 		err = errors.ErrCassandraNotFound(key)
@@ -168,8 +167,7 @@ func (c *client) GetInverseMultiple(vals ...string) (keys []string, err error) {
 		}
 		keys = append(keys, "")
 		if err != nil {
-			err = errors.Wrap(err, errors.ErrCassandraNotFound(val).Error())
-
+			err = errors.Wrap(errors.ErrCassandraNotFound(val), err.Error())
 			continue
 		}
 		err = errors.ErrCassandraNotFound(val)

pkg/meta/redis/service/redis.go

@@ -132,9 +132,9 @@ func (c *client) getMulti(ctx context.Context, prefix string, keys ...string) (v
 		err = res.Err()
 		if err != nil {
 			if err == redis.Nil {
-				err = errors.Wrap(err, errors.ErrRedisNotFound(k).Error())
+				err = errors.Wrap(errors.ErrRedisNotFound(k), err.Error())
 			} else {
-				err = errors.Wrap(err, errors.ErrRedisGetOperationFailed(k, err).Error())
+				err = errors.Wrap(errors.ErrRedisGetOperationFailed(k, err), err.Error())
 			}
 			vals = append(vals, "")
 			continue
@@ -156,11 +156,21 @@ func (c *client) Set(ctx context.Context, key, val string) (err error) {
 	}
 	err = kv.Err()
 	if err != nil {
-		return errors.Wrap(c.db.Del(vkKey).Err(), errors.ErrRedisSetOperationFailed(kvKey, err).Error())
+		err = errors.ErrRedisSetOperationFailed(kvKey, err)
+		dberr := c.db.Del(vkKey).Err()
+		if dberr != nil {
+			err = errors.Wrap(err, dberr.Error())
+		}
+		return err
 	}
 	err = vk.Err()
 	if err != nil {
-		return errors.Wrap(c.db.Del(kvKey).Err(), errors.ErrRedisSetOperationFailed(vkKey, err).Error())
+		err = errors.ErrRedisSetOperationFailed(vkKey, err)
+		dberr := c.db.Del(kvKey).Err()
+		if dberr != nil {
+			err = errors.Wrap(err, dberr.Error())
+		}
+		return err
 	}
 	return nil
 }
@@ -185,12 +195,20 @@ func (c *client) SetMultiple(ctx context.Context, kvs map[string]string) (err er
 	}
 	for vkKey, res := range kvress {
 		if err = res.Err(); err != nil {
-			err = errors.Wrap(c.db.Del(vkKey).Err(), errors.ErrRedisSetOperationFailed(vks[vkKey], err).Error())
+			err = errors.ErrRedisSetOperationFailed(vks[vkKey], err)
+			dberr := c.db.Del(vkKey).Err()
+			if dberr != nil {
+				err = errors.Wrap(err, dberr.Error())
+			}
 		}
 	}
 	for kvKey, res := range vkress {
 		if err = res.Err(); err != nil {
-			err = errors.Wrap(c.db.Del(kvKey).Err(), errors.ErrRedisSetOperationFailed(kvs[kvKey], err).Error())
+			err = errors.ErrRedisSetOperationFailed(kvs[kvKey], err)
+			dberr := c.db.Del(kvKey).Err()
+			if dberr != nil {
+				err = errors.Wrap(err, dberr.Error())
+			}
 		}
 	}
 	return err
@@ -260,7 +278,12 @@ func (c *client) deleteMulti(ctx context.Context, pfx, pfxInv string, keys ...st
 	var errs error
 	for k, res := range ress {
 		if err = res.Err(); err != nil {
-			errs = errors.Wrap(errs, errors.ErrRedisDeleteOperationFailed(k, err).Error())
+			err = errors.ErrRedisDeleteOperationFailed(k, err)
+			if errs == nil {
+				errs = err
+			} else {
+				errs = errors.Wrap(err, errs.Error())
+			}
 			continue
 		}
 	}