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Feature: Set optional webhook for received messages (#195)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // Package webhook will optionally call a preconfigured endpoint | ||
| package webhook | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/axllent/mailpit/config" | ||
| "github.com/axllent/mailpit/internal/logger" | ||
| "golang.org/x/time/rate" | ||
| ) | ||
|
|
||
| var ( | ||
| // RateLimit is the minimum number of seconds between requests | ||
| RateLimit = 1 | ||
|
|
||
| rl rate.Sometimes | ||
|
|
||
| rateLimiterSet bool | ||
| ) | ||
|
|
||
| // Send will post the MessageSummary to a webhook (if configured) | ||
| func Send(msg interface{}) { | ||
| if config.WebhookURL == "" { | ||
| return | ||
| } | ||
|
|
||
| if !rateLimiterSet { | ||
| if RateLimit > 0 { | ||
| rl = rate.Sometimes{Interval: time.Duration(RateLimit) * time.Second} | ||
| } else { | ||
| // run 1000 per second - ie: do not limit | ||
| rl = rate.Sometimes{First: 1000, Interval: time.Second} | ||
| } | ||
| rateLimiterSet = true | ||
| } | ||
|
|
||
| go func() { | ||
| rl.Do(func() { | ||
| b, err := json.Marshal(msg) | ||
| if err != nil { | ||
| logger.Log().Errorf("[webhook] invalid data: %s", err) | ||
| return | ||
| } | ||
|
|
||
| req, err := http.NewRequest("POST", config.WebhookURL, bytes.NewBuffer(b)) | ||
| if err != nil { | ||
| logger.Log().Errorf("[webhook] error: %s", err) | ||
| return | ||
| } | ||
|
|
||
| req.Header.Set("User-Agent", "Mailpit/"+config.Version) | ||
| req.Header.Set("Content-Type", "application/json") | ||
|
|
||
| client := &http.Client{} | ||
| resp, err := client.Do(req) | ||
| if err != nil { | ||
| logger.Log().Errorf("[webhook] error sending data: %s", err) | ||
| return | ||
| } | ||
|
|
||
| if resp.StatusCode < 200 || resp.StatusCode > 299 { | ||
| logger.Log().Warningf("[webhook] %s returned a %d status", config.WebhookURL, resp.StatusCode) | ||
| return | ||
| } | ||
|
|
||
| defer resp.Body.Close() | ||
| }) | ||
| }() | ||
| } |
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