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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| // Copyright 2023 xCherryIO organization | ||
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| // Copyright (c) 2023 xCherryIO Organization | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| package engine | ||
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| import ( | ||
| "fmt" | ||
| "github.com/xcherryio/xcherry/common/log" | ||
| "sync" | ||
| "time" | ||
| ) | ||
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| type WaitForProcessCompletionChannelsPerShardImpl struct { | ||
| shardId int32 | ||
| logger log.Logger | ||
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| processor ImmediateTaskProcessor | ||
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| // processExecutionId : channel | ||
| channelMap map[string]chan string | ||
| // processExecutionId : a list of timestamps of when the waiting requests were created | ||
| waitingRequestCreatedAt map[string][]int64 | ||
| lock sync.RWMutex | ||
| } | ||
|
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| func NewWaitForProcessCompletionChannelsPerShardImplImpl( | ||
| shardId int32, logger log.Logger, processor ImmediateTaskProcessor) WaitForProcessCompletionChannels { | ||
| return &WaitForProcessCompletionChannelsPerShardImpl{ | ||
| shardId: shardId, | ||
| logger: logger, | ||
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| processor: processor, | ||
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| channelMap: map[string]chan string{}, | ||
| waitingRequestCreatedAt: map[string][]int64{}, | ||
| lock: sync.RWMutex{}, | ||
| } | ||
| } | ||
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) Start() { | ||
| w.processor.AddWaitForProcessCompletionChannels(w.shardId, w) | ||
| } | ||
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) Stop() { | ||
| w.processor.RemoveWaitForProcessCompletionChannels(w.shardId) | ||
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| var procIds []string | ||
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| for procId := range w.channelMap { | ||
| procIds = append(procIds, procId) | ||
| } | ||
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| for _, procId := range procIds { | ||
| w.Signal(procId, WaitForProcessCompletionResultStop) | ||
| } | ||
| } | ||
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) Add(processExecutionId string) chan string { | ||
| w.logger.Info(fmt.Sprintf("Add process execution completion waiting request for %s in shard %d", | ||
| processExecutionId, w.shardId)) | ||
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| w.lock.Lock() | ||
| defer w.lock.Unlock() | ||
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| channel, ok := w.channelMap[processExecutionId] | ||
| if !ok { | ||
| channel = make(chan string) | ||
| w.channelMap[processExecutionId] = channel | ||
| } | ||
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| w.waitingRequestCreatedAt[processExecutionId] = append(w.waitingRequestCreatedAt[processExecutionId], w.now()) | ||
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| return channel | ||
| } | ||
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) Signal(processExecutionId string, result string) { | ||
| channel, ok := w.channelMap[processExecutionId] | ||
| if !ok { | ||
| return | ||
| } | ||
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| w.lock.Lock() | ||
| defer w.lock.Unlock() | ||
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| count := len(w.waitingRequestCreatedAt[processExecutionId]) | ||
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| for i := 0; i < count; i++ { | ||
| select { | ||
| case channel <- result: | ||
| w.logger.Info(fmt.Sprintf("Signal process execution completion waiting result %d for %s: %s", | ||
| i, processExecutionId, result)) | ||
| default: | ||
| w.logger.Info(fmt.Sprintf("Not signal process execution completion waiting result %d for %s: %s", | ||
| i, processExecutionId, result)) | ||
| } | ||
| } | ||
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| w.waitingRequestCreatedAt[processExecutionId] = []int64{} | ||
|
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| go func() { | ||
| // sleep 3 seconds before close the channel | ||
| time.Sleep(time.Second * 3) | ||
|
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| w.cleanup(processExecutionId) | ||
| }() | ||
| } | ||
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) TerminateWaiting(processExecutionId string) { | ||
| w.logger.Info(fmt.Sprintf("Terminate process execution completion waiting for %s in shard %d", | ||
| processExecutionId, w.shardId)) | ||
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| w.lock.Lock() | ||
| defer w.lock.Unlock() | ||
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| var validWaitingRequestCreatedAt []int64 | ||
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| now := w.now() | ||
| for _, createdAt := range w.waitingRequestCreatedAt[processExecutionId] { | ||
| if createdAt+int64(DEFAULT_WAIT_FOR_TIMEOUT_MAX) < now { | ||
| w.logger.Info(fmt.Sprintf( | ||
| "Remove process execution completion waiting request created at %d for %s in shard %d", | ||
| createdAt, processExecutionId, w.shardId)) | ||
| continue | ||
| } | ||
|
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| validWaitingRequestCreatedAt = append(validWaitingRequestCreatedAt, createdAt) | ||
| } | ||
|
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| w.waitingRequestCreatedAt[processExecutionId] = validWaitingRequestCreatedAt | ||
|
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| if len(w.waitingRequestCreatedAt) == 0 { | ||
| w.cleanup(processExecutionId) | ||
| } | ||
| } | ||
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) cleanup(processExecutionId string) { | ||
| w.lock.Lock() | ||
| defer w.lock.Unlock() | ||
|
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| delete(w.waitingRequestCreatedAt, processExecutionId) | ||
|
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| channel, ok := w.channelMap[processExecutionId] | ||
| if !ok { | ||
| return | ||
| } | ||
|
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| delete(w.channelMap, processExecutionId) | ||
| close(channel) | ||
|
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| w.logger.Info(fmt.Sprintf("Close process execution completion waiting channel for %s in shard %d", | ||
| processExecutionId, w.shardId)) | ||
| } | ||
|
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| func (w *WaitForProcessCompletionChannelsPerShardImpl) now() int64 { | ||
| return time.Now().Unix() | ||
| } |
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