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error.go
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error.go
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/*
* Copyright (c) 2002-2020 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package neo4j
import (
"fmt"
"github.com/neo4j/neo4j-go-driver/neo4j/internal/db"
"github.com/neo4j/neo4j-go-driver/neo4j/internal/pool"
)
type driverError struct {
message string
}
func (failure *driverError) Error() string {
return failure.message
}
func newDriverError(format string, args ...interface{}) *driverError {
return &driverError{message: fmt.Sprintf(format, args...)}
}
// IsSecurityError is a utility method to check if the provided error is related with any
// TLS failure or authentication issues.
func IsSecurityError(err error) bool {
_, is := err.(*tlsError)
return is
}
// IsAuthenticationError is a utility method to check if the provided error is related with any
// authentication issues.
func IsAuthenticationError(err error) bool {
dbErr, is := err.(*db.DatabaseError)
if !is {
return false
}
return dbErr.IsAuthentication()
}
// IsClientError is a utility method to check if the provided error is related with the client
// carrying out an invalid operation.
func IsClientError(err error) bool {
dbErr, is := err.(*db.DatabaseError)
if !is {
return false
}
return dbErr.IsClient()
}
// IsTransientError is a utility method to check if the provided error is related with a temporary
// failure that may be worked around by retrying.
func IsTransientError(err error) bool {
dbErr, is := err.(*db.DatabaseError)
if !is {
return false
}
return dbErr.IsRetriableTransient()
}
// IsSessionExpired is a utility method to check if the session no longer satisfy the criteria
// under which it was acquired, e.g. a server no longer accepts write requests.
func IsSessionExpired(err error) bool {
return false
}
// IsServiceUnavailable is a utility method to check if the provided error can be classified
// to be in service unavailable category.
func IsServiceUnavailable(err error) bool {
_, is := err.(*connectError)
if is {
return true
}
_, is = err.(*pool.PoolTimeout)
if is {
return true
}
_, is = err.(*pool.PoolFull)
return is
}