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esubaalew
18d89937ad
Centralize dedupe map access behind a mutex-safe helper and use it in both WeCom bot and WeCom app channels to eliminate concurrent map access races while preserving current dedupe behavior.
29 lines
712 B
Go
29 lines
712 B
Go
package wecom
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import "sync"
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const wecomMaxProcessedMessages = 1000
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// markMessageProcessed marks msgID as processed and returns false for duplicates.
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// All map reads/writes (including len) are protected by msgMu to avoid races.
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func markMessageProcessed(msgMu *sync.RWMutex, processedMsgs *map[string]bool, msgID string, maxEntries int) bool {
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if maxEntries <= 0 {
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maxEntries = wecomMaxProcessedMessages
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}
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msgMu.Lock()
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defer msgMu.Unlock()
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if (*processedMsgs)[msgID] {
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return false
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}
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(*processedMsgs)[msgID] = true
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// Keep the newest message marker when rotating to bound memory growth.
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if len(*processedMsgs) > maxEntries {
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*processedMsgs = map[string]bool{msgID: true}
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}
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return true
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}
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