208 lines
7.6 KiB
Go
208 lines
7.6 KiB
Go
/*
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* Copyright 1999-2020 Alibaba Group Holding Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package config_client
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import (
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"encoding/json"
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"net/http"
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"strconv"
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"time"
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"github.com/pkg/errors"
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"github.com/nacos-group/nacos-sdk-go/v2/common/monitor"
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"github.com/nacos-group/nacos-sdk-go/v2/common/remote/rpc"
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"github.com/nacos-group/nacos-sdk-go/v2/common/remote/rpc/rpc_request"
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"github.com/nacos-group/nacos-sdk-go/v2/common/remote/rpc/rpc_response"
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"github.com/nacos-group/nacos-sdk-go/v2/clients/cache"
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"github.com/nacos-group/nacos-sdk-go/v2/common/constant"
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"github.com/nacos-group/nacos-sdk-go/v2/common/http_agent"
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"github.com/nacos-group/nacos-sdk-go/v2/common/logger"
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"github.com/nacos-group/nacos-sdk-go/v2/common/nacos_server"
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"github.com/nacos-group/nacos-sdk-go/v2/model"
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"github.com/nacos-group/nacos-sdk-go/v2/util"
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"github.com/nacos-group/nacos-sdk-go/v2/vo"
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)
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type ConfigProxy struct {
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nacosServer *nacos_server.NacosServer
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clientConfig constant.ClientConfig
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}
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func NewConfigProxy(serverConfig []constant.ServerConfig, clientConfig constant.ClientConfig, httpAgent http_agent.IHttpAgent) (IConfigProxy, error) {
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proxy := ConfigProxy{}
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var err error
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proxy.nacosServer, err = nacos_server.NewNacosServer(serverConfig, clientConfig, httpAgent, clientConfig.TimeoutMs, clientConfig.Endpoint)
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proxy.clientConfig = clientConfig
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return &proxy, err
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}
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func (cp *ConfigProxy) requestProxy(rpcClient *rpc.RpcClient, request rpc_request.IRequest, timeoutMills uint64) (rpc_response.IResponse, error) {
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start := time.Now()
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cp.nacosServer.InjectSecurityInfo(request.GetHeaders())
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cp.injectCommHeader(request.GetHeaders())
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cp.nacosServer.InjectSkAk(request.GetHeaders(), cp.clientConfig)
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signHeaders := nacos_server.GetSignHeadersFromRequest(request.(rpc_request.IConfigRequest), cp.clientConfig.SecretKey)
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request.PutAllHeaders(signHeaders)
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//todo Config Limiter
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response, err := rpcClient.Request(request, int64(timeoutMills))
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monitor.GetConfigRequestMonitor(constant.GRPC, request.GetRequestType(), rpc_response.GetGrpcResponseStatusCode(response)).Observe(float64(time.Now().Nanosecond() - start.Nanosecond()))
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return response, err
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}
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func (cp *ConfigProxy) injectCommHeader(param map[string]string) {
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now := strconv.FormatInt(util.CurrentMillis(), 10)
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param[constant.CLIENT_APPNAME_HEADER] = cp.clientConfig.AppName
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param[constant.CLIENT_REQUEST_TS_HEADER] = now
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param[constant.CLIENT_REQUEST_TOKEN_HEADER] = util.Md5(now + cp.clientConfig.AppKey)
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param[constant.EX_CONFIG_INFO] = "true"
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param[constant.CHARSET_KEY] = "utf-8"
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}
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func (cp *ConfigProxy) searchConfigProxy(param vo.SearchConfigParm, tenant, accessKey, secretKey string) (*model.ConfigPage, error) {
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params := util.TransformObject2Param(param)
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if len(tenant) > 0 {
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params["tenant"] = tenant
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}
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if _, ok := params["group"]; !ok {
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params["group"] = ""
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}
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if _, ok := params["dataId"]; !ok {
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params["dataId"] = ""
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}
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var headers = map[string]string{}
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headers["accessKey"] = accessKey
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headers["secretKey"] = secretKey
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result, err := cp.nacosServer.ReqConfigApi(constant.CONFIG_PATH, params, headers, http.MethodGet, cp.clientConfig.TimeoutMs)
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if err != nil {
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return nil, err
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}
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var configPage model.ConfigPage
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err = json.Unmarshal([]byte(result), &configPage)
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if err != nil {
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return nil, err
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}
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return &configPage, nil
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}
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func (cp *ConfigProxy) queryConfig(dataId, group, tenant string, timeout uint64, notify bool, client *ConfigClient) (*rpc_response.ConfigQueryResponse, error) {
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if group == "" {
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group = constant.DEFAULT_GROUP
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}
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configQueryRequest := rpc_request.NewConfigQueryRequest(group, dataId, tenant)
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configQueryRequest.Headers["notify"] = strconv.FormatBool(notify)
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cacheKey := util.GetConfigCacheKey(dataId, group, tenant)
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// use the same key of config file as the limit checker's key
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if IsLimited(cacheKey) {
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// return error when check limited
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return nil, errors.New("ConfigQueryRequest is limited")
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}
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iResponse, err := cp.requestProxy(cp.getRpcClient(client), configQueryRequest, timeout)
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if err != nil {
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return nil, err
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}
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response, ok := iResponse.(*rpc_response.ConfigQueryResponse)
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if !ok {
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return nil, errors.New("ConfigQueryRequest returns type error")
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}
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if response.IsSuccess() {
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//todo LocalConfigInfoProcessor.saveSnapshot
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cache.WriteConfigToFile(cacheKey, cp.clientConfig.CacheDir, response.Content)
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//todo LocalConfigInfoProcessor.saveEncryptDataKeySnapshot
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if response.ContentType == "" {
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response.ContentType = "text"
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}
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return response, nil
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}
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if response.GetErrorCode() == 300 {
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//todo LocalConfigInfoProcessor.saveSnapshot
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cache.WriteConfigToFile(cacheKey, cp.clientConfig.CacheDir, "")
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//todo LocalConfigInfoProcessor.saveEncryptDataKeySnapshot
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return response, nil
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}
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if response.GetErrorCode() == 400 {
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logger.Errorf(
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"[config_rpc_client] [sub-server-error] get server config being modified concurrently, dataId=%s, group=%s, "+
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"tenant=%s", dataId, group, tenant)
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return nil, errors.New("data being modified, dataId=" + dataId + ",group=" + group + ",tenant=" + tenant)
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}
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if response.GetErrorCode() > 0 {
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logger.Errorf("[config_rpc_client] [sub-server-error] dataId=%s, group=%s, tenant=%s, code=%+v", dataId, group,
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tenant, response)
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}
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return response, nil
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}
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func (cp *ConfigProxy) createRpcClient(taskId string, client *ConfigClient) *rpc.RpcClient {
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labels := map[string]string{
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constant.LABEL_SOURCE: constant.LABEL_SOURCE_SDK,
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constant.LABEL_MODULE: constant.LABEL_MODULE_CONFIG,
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"taskId": taskId,
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}
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iRpcClient, _ := rpc.CreateClient("config-"+taskId+"-"+client.uid, rpc.GRPC, labels, cp.nacosServer)
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rpcClient := iRpcClient.GetRpcClient()
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if rpcClient.IsInitialized() {
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rpcClient.RegisterServerRequestHandler(func() rpc_request.IRequest {
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// TODO fix the group/dataId empty problem
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return rpc_request.NewConfigChangeNotifyRequest("", "", "")
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}, &ConfigChangeNotifyRequestHandler{client: client})
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rpcClient.Tenant = cp.clientConfig.NamespaceId
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rpcClient.Start()
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}
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return rpcClient
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}
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func (cp *ConfigProxy) getRpcClient(client *ConfigClient) *rpc.RpcClient {
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return cp.createRpcClient("0", client)
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}
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type ConfigChangeNotifyRequestHandler struct {
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client *ConfigClient
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}
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func (c *ConfigChangeNotifyRequestHandler) Name() string {
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return "ConfigChangeNotifyRequestHandler"
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}
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func (c *ConfigChangeNotifyRequestHandler) RequestReply(request rpc_request.IRequest, rpcClient *rpc.RpcClient) rpc_response.IResponse {
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configChangeNotifyRequest, ok := request.(*rpc_request.ConfigChangeNotifyRequest)
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if ok {
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logger.Infof("%s [server-push] config changed. dataId=%s, group=%s,tenant=%s", rpcClient.Name,
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configChangeNotifyRequest.DataId, configChangeNotifyRequest.Group, configChangeNotifyRequest.Tenant)
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cacheKey := util.GetConfigCacheKey(configChangeNotifyRequest.DataId, configChangeNotifyRequest.Group,
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configChangeNotifyRequest.Tenant)
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data, ok := c.client.cacheMap.Get(cacheKey)
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if !ok {
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return nil
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}
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cData := data.(*cacheData)
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cData.isSyncWithServer = false
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c.client.notifyListenConfig()
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return &rpc_response.NotifySubscriberResponse{
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Response: &rpc_response.Response{ResultCode: constant.RESPONSE_CODE_SUCCESS},
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}
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}
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return nil
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}
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