聊聊nacos-sdk-go的ConfigProxy

序

本文主要研究一下nacos-sdk-go的ConfigProxy

ConfigProxy

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

type ConfigProxy struct {
    nacosServer  nacos_server.NacosServer
    clientConfig constant.ClientConfig
}

• ConfigProxy定义了nacosServer、clientConfig属性

NewConfigProxy

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func NewConfigProxy(serverConfig []constant.ServerConfig, clientConfig constant.ClientConfig, httpAgent http_agent.IHttpAgent) (ConfigProxy, error) {
    proxy := ConfigProxy{}
    var err error
    proxy.nacosServer, err = nacos_server.NewNacosServer(serverConfig, clientConfig, httpAgent, clientConfig.TimeoutMs, clientConfig.Endpoint)
    proxy.clientConfig = clientConfig
    return proxy, err

}

• NewConfigProxy方法创建ConfigProxy，并设置其nacosServer、clientConfig属性

GetServerList

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func (cp *ConfigProxy) GetServerList() []constant.ServerConfig {
    return cp.nacosServer.GetServerList()
}

• GetServerList方法委托nacosServer.GetServerList()来获取serverList

GetConfigProxy

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func (cp *ConfigProxy) GetConfigProxy(param vo.ConfigParam, tenant, accessKey, secretKey string) (string, error) {
    params := util.TransformObject2Param(param)
    if len(tenant) > 0 {
        params["tenant"] = tenant
    }

    var headers = map[string]string{}
    headers["accessKey"] = accessKey
    headers["secretKey"] = secretKey

    result, err := cp.nacosServer.ReqConfigApi(constant.CONFIG_PATH, params, headers, http.MethodGet, cp.clientConfig.TimeoutMs)
    return result, err
}

• GetConfigProxy方法通过nacosServer.ReqConfigApi获取configProxy

SearchConfigProxy

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func (cp *ConfigProxy) SearchConfigProxy(param vo.SearchConfigParm, tenant, accessKey, secretKey string) (*model.ConfigPage, error) {
    params := util.TransformObject2Param(param)
    if len(tenant) > 0 {
        params["tenant"] = tenant
    }
    if _, ok := params["group"]; !ok {
        params["group"] = ""
    }
    if _, ok := params["dataId"]; !ok {
        params["dataId"] = ""
    }
    var headers = map[string]string{}
    headers["accessKey"] = accessKey
    headers["secretKey"] = secretKey
    result, err := cp.nacosServer.ReqConfigApi(constant.CONFIG_PATH, params, headers, http.MethodGet, cp.clientConfig.TimeoutMs)
    if err != nil {
        return nil, err
    }
    var configPage model.ConfigPage
    err = json.Unmarshal([]byte(result), &configPage)
    if err != nil {
        return nil, err
    }
    return &configPage, nil
}

• SearchConfigProxy方法通过cp.nacosServer.ReqConfigApi发送搜索请求，然后将结果json化为ConfigPage

PublishConfigProxy

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func (cp *ConfigProxy) PublishConfigProxy(param vo.ConfigParam, tenant, accessKey, secretKey string) (bool, error) {
    params := util.TransformObject2Param(param)
    if len(tenant) > 0 {
        params["tenant"] = tenant
    }

    var headers = map[string]string{}
    headers["accessKey"] = accessKey
    headers["secretKey"] = secretKey
    result, err := cp.nacosServer.ReqConfigApi(constant.CONFIG_PATH, params, headers, http.MethodPost, cp.clientConfig.TimeoutMs)
    if err != nil {
        return false, errors.New("[client.PublishConfig] publish config failed:" + err.Error())
    }
    if strings.ToLower(strings.Trim(result, " ")) == "true" {
        return true, nil
    } else {
        return false, errors.New("[client.PublishConfig] publish config failed:" + string(result))
    }
}

• PublishConfigProxy方法通过cp.nacosServer.ReqConfigApi执行POST请求发布configProxy

DeleteConfigProxy

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func (cp *ConfigProxy) DeleteConfigProxy(param vo.ConfigParam, tenant, accessKey, secretKey string) (bool, error) {
    params := util.TransformObject2Param(param)
    if len(tenant) > 0 {
        params["tenant"] = tenant
    }
    var headers = map[string]string{}
    headers["accessKey"] = accessKey
    headers["secretKey"] = secretKey
    result, err := cp.nacosServer.ReqConfigApi(constant.CONFIG_PATH, params, headers, http.MethodDelete, cp.clientConfig.TimeoutMs)
    if err != nil {
        return false, errors.New("[client.DeleteConfig] deleted config failed:" + err.Error())
    }
    if strings.ToLower(strings.Trim(result, " ")) == "true" {
        return true, nil
    } else {
        return false, errors.New("[client.DeleteConfig] deleted config failed: " + string(result))
    }
}

• DeleteConfigProxy方法通过cp.nacosServer.ReqConfigApi发送DELETE请求

ListenConfig

nacos-sdk-go-v0.3.2/clients/config_client/config_proxy.go

func (cp *ConfigProxy) ListenConfig(params map[string]string, tenant, accessKey, secretKey string) (string, error) {
    headers := map[string]string{
        "Content-Type":         "application/x-www-form-urlencoded;charset=utf-8",
        "Long-Pulling-Timeout": strconv.FormatUint(cp.clientConfig.ListenInterval, 10),
    }
    headers["accessKey"] = accessKey
    headers["secretKey"] = secretKey
    log.Printf("[client.ListenConfig] request params:%+v header:%+v \n", params, headers)
    result, err := cp.nacosServer.ReqConfigApi(constant.CONFIG_LISTEN_PATH, params, headers, http.MethodPost, cp.clientConfig.ListenInterval)
    return result, err
}

• ListenConfig方法通过cp.nacosServer.ReqConfigApi执行POST方法发送监听请求

小结

ConfigProxy定义了nacosServer、clientConfig属性；它提供了NewConfigProxy、GetServerList、GetConfigProxy、SearchConfigProxy、PublishConfigProxy、DeleteConfigProxy、ListenConfig方法

doc

• config_proxy