vendor: update github.com/VictoriaMetrics/metrics from v1.20.1 to v1.21.0

This adds the following push-related metrics when -pushmetrics.url is set:

- metrics_push_interval_seconds
- metrics_push_total
- metrics_push_errors_total
- metrics_push_bytes_pushed_total
- metrics_push_duration_seconds
- metrics_push_block_size_bytes

Updates https://github.com/VictoriaMetrics/metrics/issues/35

go.mod

@@ -9,7 +9,7 @@ require (
 	// Do not use the original github.com/valyala/fasthttp because of issues
 	// like https://github.com/valyala/fasthttp/commit/996610f021ff45fdc98c2ce7884d5fa4e7f9199b
 	github.com/VictoriaMetrics/fasthttp v1.1.0
-	github.com/VictoriaMetrics/metrics v1.20.1
+	github.com/VictoriaMetrics/metrics v1.21.0
 	github.com/VictoriaMetrics/metricsql v0.44.1
 	github.com/aws/aws-sdk-go v1.44.67
 	github.com/cespare/xxhash/v2 v2.1.2

go.sum

@@ -109,8 +109,8 @@ github.com/VictoriaMetrics/fastcache v1.10.0/go.mod h1:tjiYeEfYXCqacuvYw/7UoDIeJ
 github.com/VictoriaMetrics/fasthttp v1.1.0 h1:3crd4YWHsMwu60GUXRH6OstowiFvqrwS4a/ueoLdLL0=
 github.com/VictoriaMetrics/fasthttp v1.1.0/go.mod h1:/7DMcogqd+aaD3G3Hg5kFgoFwlR2uydjiWvoLp5ZTqQ=
 github.com/VictoriaMetrics/metrics v1.18.1/go.mod h1:ArjwVz7WpgpegX/JpB0zpNF2h2232kErkEnzH1sxMmA=
-github.com/VictoriaMetrics/metrics v1.20.1 h1:XqQbRKYzwkmo0DKKDbvp6V7upUqErlqd0vXPoeBsEbU=
-github.com/VictoriaMetrics/metrics v1.20.1/go.mod h1:ArjwVz7WpgpegX/JpB0zpNF2h2232kErkEnzH1sxMmA=
+github.com/VictoriaMetrics/metrics v1.21.0 h1:cjbToD4xrR+ZaDO49h2t67sdmmbCKfHfyTyAH3Sx+DM=
+github.com/VictoriaMetrics/metrics v1.21.0/go.mod h1:ArjwVz7WpgpegX/JpB0zpNF2h2232kErkEnzH1sxMmA=
 github.com/VictoriaMetrics/metricsql v0.44.1 h1:qGoRt0g84uMUscVjS7P3uDZKmjJubWKaIx9v0iHKgck=
 github.com/VictoriaMetrics/metricsql v0.44.1/go.mod h1:6pP1ZeLVJHqJrHlF6Ij3gmpQIznSsgktEcZgsAWYel0=
 github.com/VividCortex/ewma v1.2.0 h1:f58SaIzcDXrSy3kWaHNvuJgJ3Nmz59Zji6XoJR/q1ow=

vendor/github.com/VictoriaMetrics/metrics/metrics.go

@@ -99,6 +99,7 @@ func WritePrometheus(w io.Writer, exposeProcessMetrics bool) {
 func WriteProcessMetrics(w io.Writer) {
 	writeGoMetrics(w)
 	writeProcessMetrics(w)
+	writePushMetrics(w)
 }
 
 // WriteFDMetrics writes `process_max_fds` and `process_open_fds` metrics to w.

vendor/github.com/VictoriaMetrics/metrics/push.go

@@ -112,6 +112,12 @@ func InitPushExt(pushURL string, interval time.Duration, extraLabels string, wri
 	c := &http.Client{
 		Timeout: interval,
 	}
+	pushesTotal := pushMetrics.GetOrCreateCounter(fmt.Sprintf(`metrics_push_total{url=%q}`, pushURLRedacted))
+	pushErrorsTotal := pushMetrics.GetOrCreateCounter(fmt.Sprintf(`metrics_push_errors_total{url=%q}`, pushURLRedacted))
+	bytesPushedTotal := pushMetrics.GetOrCreateCounter(fmt.Sprintf(`metrics_push_bytes_pushed_total{url=%q}`, pushURLRedacted))
+	pushDuration := pushMetrics.GetOrCreateHistogram(fmt.Sprintf(`metrics_push_duration_seconds{url=%q}`, pushURLRedacted))
+	pushBlockSize := pushMetrics.GetOrCreateHistogram(fmt.Sprintf(`metrics_push_block_size_bytes{url=%q}`, pushURLRedacted))
+	pushMetrics.GetOrCreateFloatCounter(fmt.Sprintf(`metrics_push_interval_seconds{url=%q}`, pushURLRedacted)).Set(interval.Seconds())
 	go func() {
 		ticker := time.NewTicker(interval)
 		var bb bytes.Buffer
@@ -136,15 +142,22 @@ func InitPushExt(pushURL string, interval time.Duration, extraLabels string, wri
 			if err := zw.Close(); err != nil {
 				panic(fmt.Errorf("BUG: cannot flush metrics to gzip writer: %s", err))
 			}
+			pushesTotal.Inc()
+			blockLen := bb.Len()
+			bytesPushedTotal.Add(blockLen)
+			pushBlockSize.Update(float64(blockLen))
 			req, err := http.NewRequest("GET", pushURL, &bb)
 			if err != nil {
-				log.Printf("ERROR: metrics.push: cannot initialize request for metrics push to %q: %s", pushURLRedacted, err)
+				panic(fmt.Errorf("BUG: metrics.push: cannot initialize request for metrics push to %q: %w", pushURLRedacted, err))
 			}
 			req.Header.Set("Content-Type", "text/plain")
 			req.Header.Set("Content-Encoding", "gzip")
+			startTime := time.Now()
 			resp, err := c.Do(req)
+			pushDuration.UpdateDuration(startTime)
 			if err != nil {
 				log.Printf("ERROR: metrics.push: cannot push metrics to %q: %s", pushURLRedacted, err)
+				pushErrorsTotal.Inc()
 				continue
 			}
 			if resp.StatusCode/100 != 2 {
@@ -152,6 +165,7 @@ func InitPushExt(pushURL string, interval time.Duration, extraLabels string, wri
 				_ = resp.Body.Close()
 				log.Printf("ERROR: metrics.push: unexpected status code in response from %q: %d; expecting 2xx; response body: %q",
 					pushURLRedacted, resp.StatusCode, body)
+				pushErrorsTotal.Inc()
 				continue
 			}
 			_ = resp.Body.Close()
@@ -160,6 +174,12 @@ func InitPushExt(pushURL string, interval time.Duration, extraLabels string, wri
 	return nil
 }
 
+var pushMetrics = NewSet()
+
+func writePushMetrics(w io.Writer) {
+	pushMetrics.WritePrometheus(w)
+}
+
 func addExtraLabels(dst, src []byte, extraLabels string) []byte {
 	for len(src) > 0 {
 		var line []byte

vendor/modules.txt

@@ -25,7 +25,7 @@ github.com/VictoriaMetrics/fastcache
 github.com/VictoriaMetrics/fasthttp
 github.com/VictoriaMetrics/fasthttp/fasthttputil
 github.com/VictoriaMetrics/fasthttp/stackless
-# github.com/VictoriaMetrics/metrics v1.20.1
+# github.com/VictoriaMetrics/metrics v1.21.0
 ## explicit; go 1.12
 github.com/VictoriaMetrics/metrics
 # github.com/VictoriaMetrics/metricsql v0.44.1