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Merge pull request apache#135 from sjcsjc123/dubboctl-zk
feat:add dubboctl zk ls command
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| // 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 cmd | ||
|
|
||
| import ( | ||
| "github.com/spf13/cobra" | ||
|
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| "github.com/apache/dubbo-kubernetes/app/dubboctl/internal/registry/zk" | ||
| ) | ||
|
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| func addRegistryCmd(rootCmd *cobra.Command) { | ||
| addZkRegistryCmd(rootCmd) | ||
| } | ||
|
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| func addZkRegistryCmd(rootCmd *cobra.Command) { | ||
| zkRegistryCmd := &cobra.Command{ | ||
| Use: "zk", | ||
| Short: "Commands related to zookeeper registry", | ||
| Long: "Commands help user to operate zookeeper registry", | ||
| } | ||
| addZkLsCmd(zkRegistryCmd) | ||
| rootCmd.AddCommand(zkRegistryCmd) | ||
| } | ||
|
|
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| func addZkLsCmd(zkRegistryCmd *cobra.Command) { | ||
| zkAddr := "127.0.0.1:2181" | ||
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| lsCmd := &cobra.Command{ | ||
| Use: "ls", | ||
| Short: "List services or instances", | ||
| Long: "List all services or list instances of a service\n\n" + | ||
| "Usage:\n\n" + | ||
| "- List all services\n" + | ||
| " dubboctl zk ls\n\n" + | ||
| "- List instances of a service\n" + | ||
| " dubboctl zk ls [APP_NAME] [SERVICE_NAME]\n\n" + | ||
| "Example:\n\n" + | ||
| "- List all services\n" + | ||
| " dubboctl zk ls\n\n" + | ||
| "- List instances of a service\n" + | ||
| " dubboctl zk ls dubbo com.apache.dubbo.sample.basic.IGreeter\n", | ||
| Args: cobra.MaximumNArgs(2), | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| // if no args, list all services | ||
| if len(args) == 0 { | ||
| registry, err := zk.NewZkRegistry(zkAddr) | ||
| if err != nil { | ||
| cmd.Println(err) | ||
| return | ||
| } | ||
| services, err := registry.ListServices(nil) | ||
| if err != nil { | ||
| cmd.Println(err) | ||
| return | ||
| } | ||
| for _, service := range services { | ||
| cmd.Println(service) | ||
| } | ||
| return | ||
| } | ||
| if len(args) == 2 { | ||
| registry, err := zk.NewZkRegistry(zkAddr) | ||
| if err != nil { | ||
| cmd.Println(err) | ||
| return | ||
| } | ||
| instances, err := registry.ListInstances(nil, args[0], args[1]) | ||
| if err != nil { | ||
| cmd.Println(err) | ||
| return | ||
| } | ||
| for _, instance := range instances { | ||
| cmd.Println(instance) | ||
| } | ||
| return | ||
| } | ||
| cmd.Println("Invalid args, you can use `dubboctl zk ls` to list all services or use `dubboctl zk ls [APP_NAME] [SERVICE_NAME]` to list instances of a service") | ||
| }, | ||
| } | ||
|
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| lsCmd.Flags().StringVarP(&zkAddr, "addr", "a", "127.0.0.1:2181", "zookeeper address, if has multiple address, use comma to separate") | ||
| zkRegistryCmd.AddCommand(lsCmd) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| // 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. | ||
|
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| package registry | ||
|
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| import "context" | ||
|
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| // Registry is the interface that wraps the basic methods of registry. | ||
| type Registry interface { | ||
| // ListServices list all services | ||
| ListServices(ctx *context.Context) ([]string, error) | ||
| // ListInstances list all instances of the service | ||
| ListInstances(ctx *context.Context, applicationName string, serviceName string) ([]string, error) | ||
|
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| // TODO add rules | ||
| } | ||
|
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| type Service struct { | ||
| Ip string | ||
| Port int | ||
| // TODO add more info? | ||
| } |
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|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| // 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. | ||
|
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| package zk | ||
|
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "net/url" | ||
| "strings" | ||
| "time" | ||
|
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| "github.com/dubbogo/go-zookeeper/zk" | ||
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| "github.com/apache/dubbo-kubernetes/app/dubboctl/internal/registry" | ||
| ) | ||
|
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| type zkRegistry struct { | ||
| client *zk.Conn | ||
| } | ||
|
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| // NewZkRegistry creates a new zookeeper registry | ||
| func NewZkRegistry(addr string) (registry.Registry, error) { | ||
| addrList := strings.Split(addr, ",") | ||
| conn, _, err := zk.Connect(addrList, 5*time.Second, zk.WithLogInfo(false)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &zkRegistry{ | ||
| client: conn, | ||
| }, nil | ||
| } | ||
|
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| func (z *zkRegistry) ListServices(ctx *context.Context) ([]string, error) { | ||
| children, _, err := z.client.Children("/") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // if contain provider, then it is a service | ||
| var services []string | ||
| for _, firstChild := range children { | ||
| // first level is application name, like "dubbo" | ||
| secondChildren, _, err := z.client.Children("/" + firstChild) | ||
| if err != nil { | ||
| continue | ||
| } | ||
| for _, secondChild := range secondChildren { | ||
| // second level is service name, like "com.example.user.UserProvider" | ||
| thirdChildren, _, err := z.client.Children("/" + firstChild + "/" + secondChild) | ||
| if err != nil { | ||
| continue | ||
| } | ||
| // third level is "providers" or "consumers" | ||
| for _, thirdChild := range thirdChildren { | ||
| if strings.Contains(thirdChild, "providers") { | ||
| seviceName := fmt.Sprintf("application: %s, service: %s", firstChild, secondChild) | ||
| services = append(services, seviceName) | ||
| break | ||
| } | ||
| } | ||
| } | ||
|
|
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| } | ||
| return services, nil | ||
| } | ||
|
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| func (z *zkRegistry) ListInstances(ctx *context.Context, applicationName string, serviceName string) ([]string, error) { | ||
| // get all instances of the service | ||
| children, _, err := z.client.Children("/" + applicationName + "/" + serviceName) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // get all instances | ||
| var instances []string | ||
| for _, child := range children { | ||
| if strings.EqualFold(child, "providers") { | ||
| serviceInstance, _, err := z.client.Children("/" + applicationName + "/" + serviceName + "/" + child) | ||
| if err != nil { | ||
| continue | ||
| } | ||
| for _, instance := range serviceInstance { | ||
| queryUnescape, err := url.QueryUnescape(instance) | ||
| if err != nil { | ||
| continue | ||
| } | ||
| u, err := url.Parse(queryUnescape) | ||
| if err != nil { | ||
| continue | ||
| } | ||
| instances = append(instances, u.Host) | ||
| } | ||
| } | ||
| } | ||
| return instances, nil | ||
| } |
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