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client.go
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client.go
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/*
* Copyright (c) 2023 Alibaba Group Holding Ltd.
*
* 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 schedulerx
import (
"context"
"fmt"
"net"
"net/http"
"os"
"os/signal"
"sync"
"syscall"
"time"
"github.com/alibaba/schedulerx-worker-go/config"
sxactor "github.com/alibaba/schedulerx-worker-go/internal/actor"
actorcomm "github.com/alibaba/schedulerx-worker-go/internal/actor/common"
"github.com/alibaba/schedulerx-worker-go/internal/discovery"
"github.com/alibaba/schedulerx-worker-go/internal/masterpool"
"github.com/alibaba/schedulerx-worker-go/internal/openapi"
"github.com/alibaba/schedulerx-worker-go/internal/remoting"
"github.com/alibaba/schedulerx-worker-go/internal/remoting/pool"
"github.com/alibaba/schedulerx-worker-go/internal/tasks"
"github.com/alibaba/schedulerx-worker-go/logger"
"github.com/alibaba/schedulerx-worker-go/processor"
"github.com/alibaba/schedulerx-worker-go/tracer"
)
var (
client *Client
err error
once sync.Once
)
type Client struct {
cfg *Config
opts *Options
tasks *tasks.TaskMap
stopChan chan os.Signal
}
func (c *Client) RegisterTask(name string, task processor.Processor) {
c.tasks.Register(name, task)
}
// Shutdown gracefully stop the client
func (c *Client) Shutdown() {
c.stopChan <- syscall.SIGINT
time.Sleep(time.Second * 5)
}
type Config struct {
DomainName string `json:"DomainName"`
Endpoint string `json:"Endpoint"`
Namespace string `json:"Namespace"`
// GroupId may be exited multiple, separated by comma, such as "group1,group2"
GroupId string `json:"GroupId"`
// AppKey may be exited multiple, separated by comma, such as "appKey1,appKey2",
// appKey and groupId are in one-to-one correspondence
AppKey string `json:"AppKey"`
}
func (c *Config) IsValid() bool {
if c == nil {
return false
}
if c.Namespace == "" || c.GroupId == "" || c.AppKey == "" {
return false
}
if c.Endpoint == "" && c.DomainName == "" {
return false
}
return true
}
type Options struct{}
type Option func(*Options)
func WithWorkerConfig(cfg *config.WorkerConfig) Option {
return func(opt *Options) {
config.InitWorkerConfig(cfg)
}
}
func WithTracer(t tracer.Tracer) Option {
return func(opt *Options) {
tracer.InitTracer(t)
}
}
func GetClient(cfg *Config, opts ...Option) (*Client, error) {
once.Do(func() {
client, err = newClient(cfg, opts...)
})
return client, err
}
func newClient(cfg *Config, opts ...Option) (*Client, error) {
if !cfg.IsValid() {
return nil, fmt.Errorf("invalid console config, cfg=%+v", cfg)
}
ctx := context.Background()
options := new(Options)
for _, opt := range opts {
opt(options)
}
// Init discovery
openAPIClient := openapi.NewClient(
openapi.WithHTTPClient(http.Client{Timeout: time.Second * 3}),
openapi.WithNamespace(cfg.Namespace),
openapi.WithGroupId(cfg.GroupId),
openapi.WithOpenAPIDomain(cfg.DomainName),
openapi.WithOpenAPIEndpoint(cfg.Endpoint),
openapi.WithAppKey(cfg.AppKey),
)
openapi.InitOpenAPIClient(openAPIClient)
discovery.GetGroupManager().StartServerDiscovery(cfg.GroupId, cfg.AppKey)
serverDiscover := discovery.GetDiscovery(cfg.GroupId)
getActiveServer := func() string {
return serverDiscover.ActiveServer()
}
// Init connection pool
dialer := func() (net.Conn, error) {
logger.Infof("SchedulerX discovery active server addr=%s", getActiveServer())
return net.DialTimeout("tcp", getActiveServer(), time.Millisecond*500)
}
singleConnPool := pool.NewSingleConnPool(ctx, dialer,
pool.WithPostDialer(remoting.Handshake),
pool.WithAddrChangedSignalCh(serverDiscover.ResultChangedCh()))
pool.InitConnPool(singleConnPool)
if conn, err := singleConnPool.Get(ctx); err != nil {
return nil, fmt.Errorf("cannot connect schedulerx server, maybe network was broken, err=%s", err.Error())
} else {
logger.Infof("SchedulerX server connected, remoteAddr=%s, localAddr=%s", conn.RemoteAddr(), conn.LocalAddr().String())
}
taskMap := tasks.GetTaskMap()
masterpool.InitTaskMasterPool(masterpool.NewTaskMasterPool(taskMap))
// Init actors
actorSystem := actorcomm.GetActorSystem()
if err = sxactor.InitActors(actorSystem); err != nil {
return nil, fmt.Errorf("init actors faild, err=%s", err.Error())
}
stopChan := make(chan os.Signal, 1)
signal.Notify(stopChan, syscall.SIGINT, syscall.SIGTERM)
// Keep heartbeat, and receive message
// KeepHeartbeat must after init actors, so that can get actorSystemPort from actorSystem
go remoting.KeepHeartbeat(ctx, actorSystem, cfg.AppKey, stopChan)
go remoting.OnMsgReceived(ctx)
return &Client{
cfg: cfg,
opts: options,
tasks: taskMap,
stopChan: stopChan,
}, nil
}