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style(alerting): Add comments and rename character bytes constant

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Kalissaac 2022-07-19 10:42:28 -07:00 committed by TwiN
parent 4b339bca37
commit 2fb807632c
1 changed files with 6 additions and 3 deletions
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9
alerting/provider/matrix/matrix.go
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@ -66,6 +66,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
if config.ServerURL == "" {
config.ServerURL = defaultHomeserverURL
}
// The Matrix endpoint requires a unique transaction ID for each event sent
txnId := randStringBytes(24)
request, err := http.NewRequest(
http.MethodPut,
@ -173,14 +174,16 @@ func (provider *AlertProvider) getConfigForGroup(group string) MatrixProviderCon
}
}
const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
func randStringBytes(n int) string {
// All the compatible characters to use in a transaction ID
const availableCharacterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
b := make([]byte, n)
rand.Seed(time.Now().UnixNano())
for i := range b {
b[i] = letterBytes[rand.Intn(len(letterBytes))]
b[i] = availableCharacterBytes[rand.Intn(len(availableCharacterBytes))]
}
return string(b)
}