/
config_resolver.go
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/
config_resolver.go
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/*
* Copyright (c) 2002-2018 "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 (
"net/url"
"github.com/neo4j-drivers/gobolt"
)
// ServerAddress represents a host and port. Host can either be an IP address or a DNS name.
// Both IPv4 and IPv6 hosts are supported.
type ServerAddress interface {
// Hostname returns the host portion of this ServerAddress.
Hostname() string
// Port returns the port portion of this ServerAddress.
Port() string
}
// ServerAddressResolver is a function type that defines the resolver function used by the routing driver to
// resolve the initial address used to create the driver.
type ServerAddressResolver func(address ServerAddress) []ServerAddress
func newServerAddressURL(hostname string, port string) *url.URL {
if hostname == "" {
return nil
}
hostAndPort := hostname
if port != "" {
hostAndPort = hostAndPort + ":" + port
}
return &url.URL{Host: hostAndPort}
}
// NewServerAddress generates a ServerAddress with provided hostname and port information.
func NewServerAddress(hostname string, port string) ServerAddress {
return newServerAddressURL(hostname, port)
}
func wrapAddressResolverOrNil(addressResolver ServerAddressResolver) gobolt.URLAddressResolver {
if addressResolver == nil {
return nil
}
return func(address *url.URL) []*url.URL {
var result []*url.URL
for _, address := range addressResolver(address) {
result = append(result, newServerAddressURL(address.Hostname(), address.Port()))
}
return result
}
}