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impl.go
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/
impl.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 nacos
import (
"strings"
"sync"
)
import (
gxset "github.com/dubbogo/gost/container/set"
nacosClient "github.com/dubbogo/gost/database/kv/nacos"
constant2 "github.com/nacos-group/nacos-sdk-go/common/constant"
"github.com/nacos-group/nacos-sdk-go/vo"
perrors "github.com/pkg/errors"
)
import (
"dubbo.apache.org/dubbo-go/v3/common"
"dubbo.apache.org/dubbo-go/v3/common/constant"
"dubbo.apache.org/dubbo-go/v3/common/logger"
"dubbo.apache.org/dubbo-go/v3/config_center"
"dubbo.apache.org/dubbo-go/v3/config_center/parser"
)
const (
nacosClientName = "nacos config_center"
// the number is a little big tricky
// it will be used in query which looks up all keys with the target group
// now, one key represents one application
// so only a group has more than 9999 applications will failed
maxKeysNum = 9999
)
// nacosDynamicConfiguration is the implementation of DynamicConfiguration based on nacos
type nacosDynamicConfiguration struct {
config_center.BaseDynamicConfiguration
url *common.URL
rootPath string
wg sync.WaitGroup
cltLock sync.Mutex
done chan struct{}
client *nacosClient.NacosConfigClient
keyListeners sync.Map
parser parser.ConfigurationParser
}
func newNacosDynamicConfiguration(url *common.URL) (*nacosDynamicConfiguration, error) {
url.SetParam(constant.NacosNamespaceID, url.GetParam(constant.ConfigNamespaceKey, ""))
url.SetParam(constant.NacosUsername, url.Username)
url.SetParam(constant.NacosPassword, url.Password)
url.SetParam(constant.NacosAccessKey, url.GetParam(constant.ConfigAccessKey, ""))
url.SetParam(constant.NacosSecretKey, url.GetParam(constant.ConfigSecretKey, ""))
url.SetParam(constant.TimeoutKey, url.GetParam(constant.ConfigTimeoutKey, ""))
url.SetParam(constant.NacosGroupKey, url.GetParam(constant.ConfigGroupKey, constant2.DEFAULT_GROUP))
c := &nacosDynamicConfiguration{
url: url,
done: make(chan struct{}),
}
c.GetURL()
logger.Infof("[Nacos ConfigCenter] New Nacos ConfigCenter with Configuration: %+v, url = %+v", c, c.GetURL())
err := ValidateNacosClient(c)
if err != nil {
logger.Errorf("nacos configClient start error ,error message is %v", err)
return nil, err
}
c.wg.Add(1)
go HandleClientRestart(c)
return c, err
}
// AddListener Add listener
func (n *nacosDynamicConfiguration) AddListener(key string, listener config_center.ConfigurationListener, opions ...config_center.Option) {
n.addListener(key, listener)
}
// RemoveListener Remove listener
func (n *nacosDynamicConfiguration) RemoveListener(key string, listener config_center.ConfigurationListener, opions ...config_center.Option) {
n.removeListener(key, listener)
}
// GetProperties nacos distinguishes configuration files based on group and dataId. defalut group = "dubbo" and dataId = key
func (n *nacosDynamicConfiguration) GetProperties(key string, opts ...config_center.Option) (string, error) {
return n.GetRule(key, opts...)
}
// GetInternalProperty Get properties value by key
func (n *nacosDynamicConfiguration) GetInternalProperty(key string, opts ...config_center.Option) (string, error) {
return n.GetProperties(key, opts...)
}
// PublishConfig will publish the config with the (key, group, value) pair
func (n *nacosDynamicConfiguration) PublishConfig(key string, group string, value string) error {
group = n.resolvedGroup(group)
ok, err := n.client.Client().PublishConfig(vo.ConfigParam{
DataId: key,
Group: group,
Content: value,
})
if err != nil {
return perrors.WithStack(err)
}
if !ok {
return perrors.New("publish config to Nocos failed")
}
return nil
}
// GetConfigKeysByGroup will return all keys with the group
func (n *nacosDynamicConfiguration) GetConfigKeysByGroup(group string) (*gxset.HashSet, error) {
group = n.resolvedGroup(group)
page, err := n.client.Client().SearchConfig(vo.SearchConfigParam{
Search: "accurate",
Group: group,
PageNo: 1,
// actually it's impossible for user to create 9999 application under one group
PageSize: maxKeysNum,
})
result := gxset.NewSet()
if err != nil {
return result, perrors.WithMessage(err, "can not find the configClient config")
}
for _, itm := range page.PageItems {
result.Add(itm.DataId)
}
return result, nil
}
// GetRule Get router rule
func (n *nacosDynamicConfiguration) GetRule(key string, opts ...config_center.Option) (string, error) {
tmpOpts := &config_center.Options{}
for _, opt := range opts {
opt(tmpOpts)
}
resolvedGroup := n.resolvedGroup(tmpOpts.Group)
content, err := n.client.Client().GetConfig(vo.ConfigParam{
DataId: key,
Group: resolvedGroup,
})
if err != nil {
return "", perrors.WithStack(err)
} else {
return content, nil
}
}
// Parser Get Parser
func (n *nacosDynamicConfiguration) Parser() parser.ConfigurationParser {
return n.parser
}
// SetParser Set Parser
func (n *nacosDynamicConfiguration) SetParser(p parser.ConfigurationParser) {
n.parser = p
}
// NacosClient Get Nacos Client
func (n *nacosDynamicConfiguration) NacosClient() *nacosClient.NacosConfigClient {
return n.client
}
// SetNacosClient Set Nacos Client
func (n *nacosDynamicConfiguration) SetNacosClient(client *nacosClient.NacosConfigClient) {
n.cltLock.Lock()
n.client = client
n.cltLock.Unlock()
}
// WaitGroup for wait group control, zk configClient listener & zk configClient container
func (n *nacosDynamicConfiguration) WaitGroup() *sync.WaitGroup {
return &n.wg
}
// GetDone For nacos configClient control RestartCallBack() bool
func (n *nacosDynamicConfiguration) GetDone() chan struct{} {
return n.done
}
// GetURL Get URL
func (n *nacosDynamicConfiguration) GetURL() *common.URL {
return n.url
}
// Destroy Destroy configuration instance
func (n *nacosDynamicConfiguration) Destroy() {
close(n.done)
n.wg.Wait()
n.closeConfigs()
}
// resolvedGroup will regular the group. Now, it will replace the '/' with '-'.
// '/' is a special character for nacos
func (n *nacosDynamicConfiguration) resolvedGroup(group string) string {
if len(group) <= 0 {
group = n.url.GetParam(constant.NacosGroupKey, constant2.DEFAULT_GROUP)
return group
}
return strings.ReplaceAll(group, "/", "-")
}
// IsAvailable Get available status
func (n *nacosDynamicConfiguration) IsAvailable() bool {
select {
case <-n.done:
return false
default:
return true
}
}
func (n *nacosDynamicConfiguration) closeConfigs() {
// Close the old configClient first to close the tmp node
n.client.Close()
logger.Infof("begin to close provider n configClient")
}