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app.go
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app.go
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// Copyright © 2022 99nil.
//
// 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 app
import (
"fmt"
"github.com/99nil/diplomat/core/assistant"
mgtAgent "github.com/99nil/diplomat/core/mgt/agent"
mgtServer "github.com/99nil/diplomat/core/mgt/server"
"github.com/99nil/diplomat/pkg/k8s"
"github.com/99nil/diplomat/pkg/logr"
"github.com/99nil/gopkg/ctr"
"github.com/99nil/gopkg/server"
"github.com/docker/docker/client"
"github.com/spf13/cobra"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/util/flowcontrol"
)
func NewAssistant() *cobra.Command {
use := "assistant"
opt := NewOption(use)
cmd := &cobra.Command{
Use: opt.Module,
Short: "Assistant",
SilenceUsage: true,
RunE: func(_ *cobra.Command, _ []string) error {
cfg := assistant.Environ(opt.EnvPrefix)
if err := server.ParseConfigWithEnv(opt.Config, cfg, opt.EnvPrefix); err != nil {
return fmt.Errorf("parse config failed: %v", err)
}
cfg.Complete()
if err := cfg.Validate(); err != nil {
return fmt.Errorf("validate config failed: %v", err)
}
loggerIns := logr.NewLogrusInstance(&cfg.Logger)
logr.SetDefault(loggerIns)
logr.Infof("logger level: %v", logr.Level())
logr.Debugf("%#v", cfg)
dockerClient, err := client.NewClientWithOpts(client.FromEnv)
if err != nil {
return err
}
return assistant.Run(cfg, dockerClient)
},
}
opt.CompleteFlags(cmd)
return cmd
}
func NewMgtServer() *cobra.Command {
use := "mgt-server"
opt := NewOption(use)
cmd := &cobra.Command{
Use: opt.Module,
Short: "Management Server",
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
cfg := mgtServer.Environ(opt.EnvPrefix)
if err := server.ParseConfigWithEnv(opt.Config, cfg, opt.EnvPrefix); err != nil {
return fmt.Errorf("parse config failed: %v", err)
}
cfg.Complete()
if err := cfg.Validate(); err != nil {
return fmt.Errorf("validate config failed: %v", err)
}
loggerIns := logr.NewLogrusInstance(&cfg.Logger)
logr.SetDefault(loggerIns)
ctr.InitLogger(loggerIns)
logr.Infof("logger level: %v", logr.Level())
logr.Debugf("%#v", cfg)
restConfig, err := k8s.NewRestConfig(cfg.Kubernetes)
if err != nil {
return fmt.Errorf("init kubernetes rest config failed: %v", err)
}
restConfig.RateLimiter = flowcontrol.NewTokenBucketRateLimiter(1000, 1000)
kubeClient, err := kubernetes.NewForConfig(restConfig)
if err != nil {
return fmt.Errorf("init kubernetes client failed: %v", err)
}
dynamicClient, err := dynamic.NewForConfig(restConfig)
if err != nil {
return fmt.Errorf("init dynamic client failed: %v", err)
}
return mgtServer.Run(cfg, kubeClient, dynamicClient)
},
}
opt.CompleteFlags(cmd)
return cmd
}
func NewMgtAgent() *cobra.Command {
use := "mgt-agent"
opt := NewOption(use)
cmd := &cobra.Command{
Use: opt.Module,
Short: "Management Agent",
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
cfg := mgtAgent.Environ(opt.EnvPrefix)
if err := server.ParseConfigWithEnv(opt.Config, cfg, opt.EnvPrefix); err != nil {
return fmt.Errorf("parse config failed: %v", err)
}
cfg.Complete()
if err := cfg.Validate(); err != nil {
return fmt.Errorf("validate config failed: %v", err)
}
loggerIns := logr.NewLogrusInstance(&cfg.Logger)
logr.SetDefault(loggerIns)
logr.Infof("logger level: %v", logr.Level())
logr.Debugf("%#v", cfg)
return mgtAgent.Run(cfg)
},
}
opt.CompleteFlags(cmd)
return cmd
}
func NewProxyServer() *cobra.Command {
cmd := &cobra.Command{
Use: "proxy-server",
Short: "Proxy Server",
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
// TODO 解析配置
// TODO 校验配置
// TODO proxy server 是个有状态的服务
// TODO 需要保证 边缘Node 资源的 InternalIP 为 proxy server 地址,kubeletEndpoint 端口为 proxy server 监听端口
// TODO 当 边缘节点 发起长连接时,更新node资源的 InternalIP 为对应 proxy server 地址
// TODO 开放接口供 k8s APIServer 调用 logs/exec/metrics 等,并透传至边缘节点获取数据
return nil
},
}
return cmd
}
func NewProxyAgent() *cobra.Command {
cmd := &cobra.Command{
Use: "proxy-agent",
Short: "Proxy Agent",
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
// TODO 解析配置
// TODO 校验配置
// TODO 向 proxy server 发起请求
// TODO 根据 proxy server 的请求,发送数据
return nil
},
}
return cmd
}