tjiuming commented on code in PR #16197:
URL: https://github.com/apache/pulsar/pull/16197#discussion_r912342379
##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/stats/prometheus/PrometheusMetricsGenerator.java:
##########
@@ -318,4 +298,40 @@ private static void
generateManagedLedgerBookieClientMetrics(PulsarService pulsa
// nop
}
}
+
+
+ private static void writeOutMetricData(OutputStream out, ByteBuf buffer,
boolean exposeBufferMetrics,
+ boolean enableCompress) throws
IOException {
+ try {
+ if (enableCompress) {
+ out = new GZIPOutputStream(out);
Review Comment:
@merlimat But `CompressionCodecZLib` not in GZIP format, and Prometheus
read metrics data in GZIP format:
```java
if s.gzipr == nil {
s.buf = bufio.NewReader(resp.Body)
s.gzipr, err = gzip.NewReader(s.buf)
if err != nil {
return "", err
}
} else {
s.buf.Reset(resp.Body)
if err = s.gzipr.Reset(s.buf); err != nil {
return "", err
}
}
n, err := io.Copy(w, io.LimitReader(s.gzipr, s.bodySizeLimit))
s.gzipr.Close()
if err != nil {
return "", err
}
```
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