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worker.go
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worker.go
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// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package worker
import (
"sync/atomic"
sdkworker "go.temporal.io/sdk/worker"
"go.uber.org/fx"
"go.temporal.io/server/common"
"go.temporal.io/server/common/log"
"go.temporal.io/server/common/log/tag"
"go.temporal.io/server/common/sdk"
workercommon "go.temporal.io/server/service/worker/common"
)
const DefaultWorkerTaskQueue = "default-worker-tq"
type (
// workerManager maintains list of SDK workers.
workerManager struct {
status int32
logger log.Logger
sdkClientFactory sdk.ClientFactory
workers []sdkworker.Worker
workerComponents []workercommon.WorkerComponent
}
initParams struct {
fx.In
Logger log.Logger
SdkClientFactory sdk.ClientFactory
WorkerComponents []workercommon.WorkerComponent `group:"workerComponent"`
}
)
func NewWorkerManager(params initParams) *workerManager {
return &workerManager{
logger: params.Logger,
sdkClientFactory: params.SdkClientFactory,
workerComponents: params.WorkerComponents,
}
}
func (wm *workerManager) Start() {
if !atomic.CompareAndSwapInt32(
&wm.status,
common.DaemonStatusInitialized,
common.DaemonStatusStarted,
) {
return
}
defaultWorkerOptions := sdkworker.Options{
// TODO: add dynamic config for worker options
}
sdkClient := wm.sdkClientFactory.GetSystemClient(wm.logger)
defaultWorker := sdkworker.New(sdkClient, DefaultWorkerTaskQueue, defaultWorkerOptions)
wm.workers = []sdkworker.Worker{defaultWorker}
for _, wc := range wm.workerComponents {
workerOptions := wc.DedicatedWorkerOptions()
if workerOptions == nil {
// use default worker
wc.Register(defaultWorker)
} else {
// this worker component requires a dedicated worker
dedicatedWorker := sdkworker.New(sdkClient, workerOptions.TaskQueue, workerOptions.Options)
wc.Register(dedicatedWorker)
wm.workers = append(wm.workers, dedicatedWorker)
}
}
for _, w := range wm.workers {
w.Start()
}
wm.logger.Info("", tag.ComponentWorkerManager, tag.LifeCycleStarted)
}
func (wm *workerManager) Stop() {
if !atomic.CompareAndSwapInt32(
&wm.status,
common.DaemonStatusStarted,
common.DaemonStatusStopped,
) {
return
}
for _, w := range wm.workers {
w.Stop()
}
wm.logger.Info("", tag.ComponentWorkerManager, tag.LifeCycleStopped)
}