lib/promrelabel: support action: graphite relabeling

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2737

README.md

@@ -478,6 +478,8 @@ The `/api/v1/export` endpoint should return the following response:
 {"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277406000]}
 ```
 
+[Graphite relabeling](https://docs.victoriametrics.com/vmagent.html#graphite-relabeling) can be used if the imported Graphite data is going to be queried via [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html).
+
 ## Querying Graphite data
 
 Data sent to VictoriaMetrics via `Graphite plaintext protocol` may be read via the following APIs:
@@ -492,6 +494,9 @@ VictoriaMetrics supports `__graphite__` pseudo-label for selecting time series w
 
 The `__graphite__` pseudo-label supports e.g. alternate regexp filters such as `(value1|...|valueN)`. They are transparently converted to `{value1,...,valueN}` syntax [used in Graphite](https://graphite.readthedocs.io/en/latest/render_api.html#paths-and-wildcards). This allows using [multi-value template variables in Grafana](https://grafana.com/docs/grafana/latest/variables/formatting-multi-value-variables/) inside `__graphite__` pseudo-label. For example, Grafana expands `{__graphite__=~"foo.($bar).baz"}` into `{__graphite__=~"foo.(x|y).baz"}` if `$bar` template variable contains `x` and `y` values. In this case the query is automatically converted into `{__graphite__=~"foo.{x,y}.baz"}` before execution.
 
+VictoriaMetrics also supports Graphite query language - see [these docs](#graphite-render-api-usage).
+
+
 ## How to send data from OpenTSDB-compatible agents
 
 VictoriaMetrics supports [telnet put protocol](http://opentsdb.net/docs/build/html/api_telnet/put.html)
@@ -1132,7 +1137,9 @@ Example contents for `-relabelConfig` file:
   regex: true
 ```
 
-See [these docs](https://docs.victoriametrics.com/vmagent.html#relabeling) for more details about relabeling in VictoriaMetrics.
+VictoriaMetrics components provide additional relabeling features such as Graphite-style relabeling.
+See [these docs](https://docs.victoriametrics.com/vmagent.html#relabeling) for more details.
+
 
 ## Federation
 

app/vmagent/README.md

@@ -252,12 +252,13 @@ Labels can be added to metrics by the following mechanisms:
 VictoriaMetrics components (including `vmagent`) support Prometheus-compatible relabeling.
 They provide the following additional actions on top of actions from the [Prometheus relabeling](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config):
 
-* `replace_all`: replaces all of the occurences of `regex` in the values of `source_labels` with the `replacement` and stores the results in the `target_label`.
+* `replace_all`: replaces all of the occurences of `regex` in the values of `source_labels` with the `replacement` and stores the results in the `target_label`
-* `labelmap_all`: replaces all of the occurences of `regex` in all the label names with the `replacement`.
+* `labelmap_all`: replaces all of the occurences of `regex` in all the label names with the `replacement`
-* `keep_if_equal`: keeps the entry if all the label values from `source_labels` are equal.
+* `keep_if_equal`: keeps the entry if all the label values from `source_labels` are equal
-* `drop_if_equal`: drops the entry if all the label values from `source_labels` are equal.
+* `drop_if_equal`: drops the entry if all the label values from `source_labels` are equal
-* `keep_metrics`: keeps all the metrics with names matching the given `regex`.
+* `keep_metrics`: keeps all the metrics with names matching the given `regex`
-* `drop_metrics`: drops all the metrics with names matching the given `regex`.
+* `drop_metrics`: drops all the metrics with names matching the given `regex`
+* `graphite`: applies Graphite-style relabeling to metric name. See [these docs](#graphite-relabeling)
 
 The `regex` value can be split into multiple lines for improved readability and maintainability. These lines are automatically joined with `|` char when parsed. For example, the following configs are equivalent:
 
@@ -305,6 +306,38 @@ You can read more about relabeling in the following articles:
 * [Extracting labels from legacy metric names](https://www.robustperception.io/extracting-labels-from-legacy-metric-names)
 * [relabel_configs vs metric_relabel_configs](https://www.robustperception.io/relabel_configs-vs-metric_relabel_configs)
 
+## Graphite relabeling
+
+VictoriaMetrics components support `action: graphite` relabeling rules, which allow extracting various parts from Graphite-style metrics
+into the configued labels with the syntax similar to [Glob matching in statsd_exporter](https://github.com/prometheus/statsd_exporter#glob-matching).
+Note that the `name` field must be substituted with explicit `__name__` option under `labels` section.
+If `__name__` option is missing under `labels` section, then the original Graphite-style metric name is left unchanged.
+
+For example, the following relabeling rule generates `requests_total{job="app42",instance="host124:8080"}` metric
+from "app42.host123.requests.total" Graphite-style metric:
+
+```yaml
+- action: graphite
+  match: "*.*.*.total"
+  labels:
+    __name__: "${3}_total"
+    job: "$1"
+    instance: "${2}:8080"
+```
+
+Important notes about `action: graphite` relabeling rules:
+
+- The relabeling rule is applied only to metrics, which match the given `match` expression. Other metrics remain unchanged.
+- The `*` matches the maximum possible number of chars until the next dot or until the next part of the `match` expression whichever comes first.
+  It may match zero chars if the next char is `.`.
+  For example, `match: "app*foo.bar"` matches `app42foo.bar` and `42` becomes available to use at `labels` section via `$1` capture group.
+- The `$0` capture group matches the original metric name.
+- The relabeling rules are executed in order defined in the original config.
+
+The `action: graphite` relabeling rules are easier to write and maintain than `action: replace` for labels extraction from Graphite-style metric names.
+Additionally, the `action: graphite` relabeling rules usually work much faster than the equivalent `action: replace` rules.
+
+
 ## Prometheus staleness markers
 
 `vmagent` sends [Prometheus staleness markers](https://www.robustperception.io/staleness-and-promql) to `-remoteWrite.url` in the following cases:

docs/CHANGELOG.md

@@ -34,6 +34,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
 * FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): expose `/api/v1/status/config` endpoint in the same way as Prometheus does. See [these docs](https://prometheus.io/docs/prometheus/latest/querying/api/#config).
 * FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add `-promscrape.suppressScrapeErrorsDelay` command-line flag, which can be used for delaying and aggregating the logging of per-target scrape errors. This may reduce the amounts of logs when `vmagent` scrapes many unreliable targets. See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2575). Thanks to @jelmd for [the initial implementation](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2576).
 * FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add `-promscrape.cluster.name` command-line flag, which allows proper data de-duplication when the same target is scraped from multiple [vmagent clusters](https://docs.victoriametrics.com/vmagent.html#scraping-big-number-of-targets). See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2679).
+* FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add `action: graphite` relabeling rules optimized for extracting labels from Graphite-style metric names. See [these docs](https://docs.victoriametrics.com/vmagent.html#graphite-relabeling) and [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2737).
 * FEATURE: [VictoriaMetrics enterprise](https://victoriametrics.com/products/enterprise/): expose `vm_downsampling_partitions_scheduled` and `vm_downsampling_partitions_scheduled_size_bytes` metrics, which can be used for tracking the progress of initial [downsampling](https://docs.victoriametrics.com/#downsampling) for historical data. See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2612).
 
 * BUGFIX: support for data ingestion in [DataDog format](https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html#how-to-send-data-from-datadog-agent) from legacy clients / agents. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2670). Thanks to @elProxy for the fix.

docs/README.md

@@ -268,7 +268,8 @@ See the [example VMUI at VictoriaMetrics playground](https://play.victoriametric
 VictoriaMetrics provides an ability to explore time series cardinality at `cardinality` tab in [vmui](#vmui) in the following ways:
 
 - To identify metric names with the highest number of series.
-- To idnetify labels with the highest number of series.
+- To identify labels with the highest number of series.
+- To identify values with the highest number of series for the selected label (aka `focusLabel`).
 - To identify label=name pairs with the highest number of series.
 - To identify labels with the highest number of unique values.
 
@@ -477,6 +478,8 @@ The `/api/v1/export` endpoint should return the following response:
 {"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277406000]}
 ```
 
+[Graphite relabeling](https://docs.victoriametrics.com/vmagent.html#graphite-relabeling) can be used if the imported Graphite data is going to be queried via [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html).
+
 ## Querying Graphite data
 
 Data sent to VictoriaMetrics via `Graphite plaintext protocol` may be read via the following APIs:
@@ -491,6 +494,9 @@ VictoriaMetrics supports `__graphite__` pseudo-label for selecting time series w
 
 The `__graphite__` pseudo-label supports e.g. alternate regexp filters such as `(value1|...|valueN)`. They are transparently converted to `{value1,...,valueN}` syntax [used in Graphite](https://graphite.readthedocs.io/en/latest/render_api.html#paths-and-wildcards). This allows using [multi-value template variables in Grafana](https://grafana.com/docs/grafana/latest/variables/formatting-multi-value-variables/) inside `__graphite__` pseudo-label. For example, Grafana expands `{__graphite__=~"foo.($bar).baz"}` into `{__graphite__=~"foo.(x|y).baz"}` if `$bar` template variable contains `x` and `y` values. In this case the query is automatically converted into `{__graphite__=~"foo.{x,y}.baz"}` before execution.
 
+VictoriaMetrics also supports Graphite query language - see [these docs](#graphite-render-api-usage).
+
+
 ## How to send data from OpenTSDB-compatible agents
 
 VictoriaMetrics supports [telnet put protocol](http://opentsdb.net/docs/build/html/api_telnet/put.html)
@@ -1131,7 +1137,9 @@ Example contents for `-relabelConfig` file:
   regex: true
 ```
 
-See [these docs](https://docs.victoriametrics.com/vmagent.html#relabeling) for more details about relabeling in VictoriaMetrics.
+VictoriaMetrics components provide additional relabeling features such as Graphite-style relabeling.
+See [these docs](https://docs.victoriametrics.com/vmagent.html#relabeling) for more details.
+
 
 ## Federation
 
@@ -1441,6 +1449,7 @@ VictoriaMetrics returns TSDB stats at `/api/v1/status/tsdb` page in the way simi
 
 * `topN=N` where `N` is the number of top entries to return in the response. By default top 10 entries are returned.
 * `date=YYYY-MM-DD` where `YYYY-MM-DD` is the date for collecting the stats. By default the stats is collected for the current day. Pass `date=1970-01-01` in order to collect global stats across all the days.
+* `focusLabel=LABEL_NAME` returns label values with the highest number of time series for the given `LABEL_NAME` in the `seriesCountByFocusLabelValue` list.
 * `match[]=SELECTOR` where `SELECTOR` is an arbitrary [time series selector](https://prometheus.io/docs/prometheus/latest/querying/basics/#time-series-selectors) for series to take into account during stats calculation. By default all the series are taken into account.
 * `extra_label=LABEL=VALUE`. See [these docs](#prometheus-querying-api-enhancements) for more details.
 

docs/Single-server-VictoriaMetrics.md

@@ -482,6 +482,8 @@ The `/api/v1/export` endpoint should return the following response:
 {"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277406000]}
 ```
 
+[Graphite relabeling](https://docs.victoriametrics.com/vmagent.html#graphite-relabeling) can be used if the imported Graphite data is going to be queried via [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html).
+
 ## Querying Graphite data
 
 Data sent to VictoriaMetrics via `Graphite plaintext protocol` may be read via the following APIs:
@@ -496,6 +498,9 @@ VictoriaMetrics supports `__graphite__` pseudo-label for selecting time series w
 
 The `__graphite__` pseudo-label supports e.g. alternate regexp filters such as `(value1|...|valueN)`. They are transparently converted to `{value1,...,valueN}` syntax [used in Graphite](https://graphite.readthedocs.io/en/latest/render_api.html#paths-and-wildcards). This allows using [multi-value template variables in Grafana](https://grafana.com/docs/grafana/latest/variables/formatting-multi-value-variables/) inside `__graphite__` pseudo-label. For example, Grafana expands `{__graphite__=~"foo.($bar).baz"}` into `{__graphite__=~"foo.(x|y).baz"}` if `$bar` template variable contains `x` and `y` values. In this case the query is automatically converted into `{__graphite__=~"foo.{x,y}.baz"}` before execution.
 
+VictoriaMetrics also supports Graphite query language - see [these docs](#graphite-render-api-usage).
+
+
 ## How to send data from OpenTSDB-compatible agents
 
 VictoriaMetrics supports [telnet put protocol](http://opentsdb.net/docs/build/html/api_telnet/put.html)
@@ -1136,7 +1141,9 @@ Example contents for `-relabelConfig` file:
   regex: true
 ```
 
-See [these docs](https://docs.victoriametrics.com/vmagent.html#relabeling) for more details about relabeling in VictoriaMetrics.
+VictoriaMetrics components provide additional relabeling features such as Graphite-style relabeling.
+See [these docs](https://docs.victoriametrics.com/vmagent.html#relabeling) for more details.
+
 
 ## Federation
 

docs/vmagent.md

@@ -256,12 +256,13 @@ Labels can be added to metrics by the following mechanisms:
 VictoriaMetrics components (including `vmagent`) support Prometheus-compatible relabeling.
 They provide the following additional actions on top of actions from the [Prometheus relabeling](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config):
 
-* `replace_all`: replaces all of the occurences of `regex` in the values of `source_labels` with the `replacement` and stores the results in the `target_label`.
+* `replace_all`: replaces all of the occurences of `regex` in the values of `source_labels` with the `replacement` and stores the results in the `target_label`
-* `labelmap_all`: replaces all of the occurences of `regex` in all the label names with the `replacement`.
+* `labelmap_all`: replaces all of the occurences of `regex` in all the label names with the `replacement`
-* `keep_if_equal`: keeps the entry if all the label values from `source_labels` are equal.
+* `keep_if_equal`: keeps the entry if all the label values from `source_labels` are equal
-* `drop_if_equal`: drops the entry if all the label values from `source_labels` are equal.
+* `drop_if_equal`: drops the entry if all the label values from `source_labels` are equal
-* `keep_metrics`: keeps all the metrics with names matching the given `regex`.
+* `keep_metrics`: keeps all the metrics with names matching the given `regex`
-* `drop_metrics`: drops all the metrics with names matching the given `regex`.
+* `drop_metrics`: drops all the metrics with names matching the given `regex`
+* `graphite`: applies Graphite-style relabeling to metric name. See [these docs](#graphite-relabeling)
 
 The `regex` value can be split into multiple lines for improved readability and maintainability. These lines are automatically joined with `|` char when parsed. For example, the following configs are equivalent:
 
@@ -309,6 +310,38 @@ You can read more about relabeling in the following articles:
 * [Extracting labels from legacy metric names](https://www.robustperception.io/extracting-labels-from-legacy-metric-names)
 * [relabel_configs vs metric_relabel_configs](https://www.robustperception.io/relabel_configs-vs-metric_relabel_configs)
 
+## Graphite relabeling
+
+VictoriaMetrics components support `action: graphite` relabeling rules, which allow extracting various parts from Graphite-style metrics
+into the configued labels with the syntax similar to [Glob matching in statsd_exporter](https://github.com/prometheus/statsd_exporter#glob-matching).
+Note that the `name` field must be substituted with explicit `__name__` option under `labels` section.
+If `__name__` option is missing under `labels` section, then the original Graphite-style metric name is left unchanged.
+
+For example, the following relabeling rule generates `requests_total{job="app42",instance="host124:8080"}` metric
+from "app42.host123.requests.total" Graphite-style metric:
+
+```yaml
+- action: graphite
+  match: "*.*.*.total"
+  labels:
+    __name__: "${3}_total"
+    job: "$1"
+    instance: "${2}:8080"
+```
+
+Important notes about `action: graphite` relabeling rules:
+
+- The relabeling rule is applied only to metrics, which match the given `match` expression. Other metrics remain unchanged.
+- The `*` matches the maximum possible number of chars until the next dot or until the next part of the `match` expression whichever comes first.
+  It may match zero chars if the next char is `.`.
+  For example, `match: "app*foo.bar"` matches `app42foo.bar` and `42` becomes available to use at `labels` section via `$1` capture group.
+- The `$0` capture group matches the original metric name.
+- The relabeling rules are executed in order defined in the original config.
+
+The `action: graphite` relabeling rules are easier to write and maintain than `action: replace` for labels extraction from Graphite-style metric names.
+Additionally, the `action: graphite` relabeling rules usually work much faster than the equivalent `action: replace` rules.
+
+
 ## Prometheus staleness markers
 
 `vmagent` sends [Prometheus staleness markers](https://www.robustperception.io/staleness-and-promql) to `-remoteWrite.url` in the following cases:

lib/promrelabel/config.go

@@ -23,6 +23,22 @@ type RelabelConfig struct {
 	Replacement  *string         `yaml:"replacement,omitempty"`
 	Action       string          `yaml:"action,omitempty"`
 	If           *IfExpression   `yaml:"if,omitempty"`
+
+	// Match is used together with Labels for `action: graphite`. For example:
+	// - action: graphite
+	//   match: 'foo.*.*.bar'
+	//   labels:
+	//     job: '$1'
+	//     instance: '${2}:8080'
+	Match string `yaml:"match,omitempty"`
+
+	// Labels is used together with Match for `action: graphite`. For example:
+	// - action: graphite
+	//   match: 'foo.*.*.bar'
+	//   labels:
+	//     job: '$1'
+	//     instance: '${2}:8080'
+	Labels map[string]string `yaml:"labels,omitempty"`
 }
 
 // MultiLineRegex contains a regex, which can be split into multiple lines.
@@ -114,12 +130,12 @@ func (pcs *ParsedConfigs) String() string {
 	if pcs == nil {
 		return ""
 	}
-	var sb strings.Builder
+	var a []string
 	for _, prc := range pcs.prcs {
-		fmt.Fprintf(&sb, "%s,", prc.String())
+		s := "[" + prc.String() + "]"
+		a = append(a, s)
 	}
-	fmt.Fprintf(&sb, "relabelDebug=%v", pcs.relabelDebug)
+	return fmt.Sprintf("%s, relabelDebug=%v", strings.Join(a, ","), pcs.relabelDebug)
-	return sb.String()
 }
 
 // LoadRelabelConfigs loads relabel configs from the given path.
@@ -200,11 +216,38 @@ func parseRelabelConfig(rc *RelabelConfig) (*parsedRelabelConfig, error) {
 	if rc.Replacement != nil {
 		replacement = *rc.Replacement
 	}
+	var graphiteMatchTemplate *graphiteMatchTemplate
+	if rc.Match != "" {
+		graphiteMatchTemplate = newGraphiteMatchTemplate(rc.Match)
+	}
+	var graphiteLabelRules []graphiteLabelRule
+	if rc.Labels != nil {
+		graphiteLabelRules = newGraphiteLabelRules(rc.Labels)
+	}
 	action := rc.Action
 	if action == "" {
 		action = "replace"
 	}
 	switch action {
+	case "graphite":
+		if graphiteMatchTemplate == nil {
+			return nil, fmt.Errorf("missing `match` for `action=graphite`; see https://docs.victoriametrics.com/vmagent.html#graphite-relabeling")
+		}
+		if len(graphiteLabelRules) == 0 {
+			return nil, fmt.Errorf("missing `labels` for `action=graphite`; see https://docs.victoriametrics.com/vmagent.html#graphite-relabeling")
+		}
+		if len(rc.SourceLabels) > 0 {
+			return nil, fmt.Errorf("`source_labels` cannot be used with `action=graphite`; see https://docs.victoriametrics.com/vmagent.html#graphite-relabeling")
+		}
+		if rc.TargetLabel != "" {
+			return nil, fmt.Errorf("`target_label` cannot be used with `action=graphite`; see https://docs.victoriametrics.com/vmagent.html#graphite-relabeling")
+		}
+		if rc.Replacement != nil {
+			return nil, fmt.Errorf("`replacement` cannot be used with `action=graphite`; see https://docs.victoriametrics.com/vmagent.html#graphite-relabeling")
+		}
+		if rc.Regex != nil {
+			return nil, fmt.Errorf("`regex` cannot be used with `action=graphite`; see https://docs.victoriametrics.com/vmagent.html#graphite-relabeling")
+		}
 	case "replace":
 		if targetLabel == "" {
 			return nil, fmt.Errorf("missing `target_label` for `action=replace`")
@@ -274,6 +317,14 @@ func parseRelabelConfig(rc *RelabelConfig) (*parsedRelabelConfig, error) {
 	default:
 		return nil, fmt.Errorf("unknown `action` %q", action)
 	}
+	if action != "graphite" {
+		if graphiteMatchTemplate != nil {
+			return nil, fmt.Errorf("`match` config cannot be applied to `action=%s`; it is applied only to `action=graphite`", action)
+		}
+		if len(graphiteLabelRules) > 0 {
+			return nil, fmt.Errorf("`labels` config cannot be applied to `action=%s`; it is applied only to `action=graphite`", action)
+		}
+	}
 	return &parsedRelabelConfig{
 		SourceLabels: sourceLabels,
 		Separator:    separator,
@@ -284,6 +335,9 @@ func parseRelabelConfig(rc *RelabelConfig) (*parsedRelabelConfig, error) {
 		Action:       action,
 		If:           rc.If,
 
+		graphiteMatchTemplate: graphiteMatchTemplate,
+		graphiteLabelRules:    graphiteLabelRules,
+
 		regexOriginal:                regexOriginalCompiled,
 		hasCaptureGroupInTargetLabel: strings.Contains(targetLabel, "$"),
 		hasCaptureGroupInReplacement: strings.Contains(replacement, "$"),

lib/promrelabel/config_test.go

@@ -45,6 +45,13 @@ func TestRelabelConfigMarshalUnmarshal(t *testing.T) {
   - null
   - nan
 `, "- regex:\n  - \"-1.23\"\n  - \"false\"\n  - \"null\"\n  - nan\n")
+	f(`
+- action: graphite
+  match: 'foo.*.*.aaa'
+  labels:
+    instance: '$1-abc'
+    job: '${2}'
+`, "- action: graphite\n  match: foo.*.*.aaa\n  labels:\n    instance: $1-abc\n    job: ${2}\n")
 }
 
 func TestLoadRelabelConfigsSuccess(t *testing.T) {
@@ -53,8 +60,9 @@ func TestLoadRelabelConfigsSuccess(t *testing.T) {
 	if err != nil {
 		t.Fatalf("cannot load relabel configs from %q: %s", path, err)
 	}
-	if n := pcs.Len(); n != 14 {
+	nExpected := 16
-		t.Fatalf("unexpected number of relabel configs loaded from %q; got %d; want %d", path, n, 14)
+	if n := pcs.Len(); n != nExpected {
+		t.Fatalf("unexpected number of relabel configs loaded from %q; got %d; want %d", path, n, nExpected)
 	}
 }
 
@@ -77,6 +85,51 @@ func TestLoadRelabelConfigsFailure(t *testing.T) {
 	})
 }
 
+func TestParsedConfigsString(t *testing.T) {
+	f := func(rcs []RelabelConfig, sExpected string) {
+		t.Helper()
+		pcs, err := ParseRelabelConfigs(rcs, false)
+		if err != nil {
+			t.Fatalf("unexpected error: %s", err)
+		}
+		s := pcs.String()
+		if s != sExpected {
+			t.Fatalf("unexpected string representation for ParsedConfigs;\ngot\n%s\nwant\n%s", s, sExpected)
+		}
+	}
+	f([]RelabelConfig{
+		{
+			TargetLabel:  "foo",
+			SourceLabels: []string{"aaa"},
+		},
+	}, "[SourceLabels=[aaa], Separator=;, TargetLabel=foo, Regex=^(.*)$, Modulus=0, Replacement=$1, Action=replace, If=, "+
+		"graphiteMatchTemplate=<nil>, graphiteLabelRules=[]], relabelDebug=false")
+	var ie IfExpression
+	if err := ie.Parse("{foo=~'bar'}"); err != nil {
+		t.Fatalf("unexpected error when parsing if expression: %s", err)
+	}
+	f([]RelabelConfig{
+		{
+			Action: "graphite",
+			Match:  "foo.*.bar",
+			Labels: map[string]string{
+				"job": "$1-zz",
+			},
+			If: &ie,
+		},
+	}, "[SourceLabels=[], Separator=;, TargetLabel=, Regex=^(.*)$, Modulus=0, Replacement=$1, Action=graphite, If={foo=~'bar'}, "+
+		"graphiteMatchTemplate=foo.*.bar, graphiteLabelRules=[replaceTemplate=$1-zz, targetLabel=job]], relabelDebug=false")
+	f([]RelabelConfig{
+		{
+			Action:       "replace",
+			SourceLabels: []string{"foo", "bar"},
+			TargetLabel:  "x",
+			If:           &ie,
+		},
+	}, "[SourceLabels=[foo bar], Separator=;, TargetLabel=x, Regex=^(.*)$, Modulus=0, Replacement=$1, Action=replace, If={foo=~'bar'}, "+
+		"graphiteMatchTemplate=<nil>, graphiteLabelRules=[]], relabelDebug=false")
+}
+
 func TestParseRelabelConfigsSuccess(t *testing.T) {
 	f := func(rcs []RelabelConfig, pcsExpected *ParsedConfigs) {
 		t.Helper()
@@ -271,4 +324,110 @@ func TestParseRelabelConfigsFailure(t *testing.T) {
 			},
 		})
 	})
+	t.Run("uppercase-missing-sourceLabels", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action:      "uppercase",
+				TargetLabel: "foobar",
+			},
+		})
+	})
+	t.Run("lowercase-missing-targetLabel", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action:       "lowercase",
+				SourceLabels: []string{"foobar"},
+			},
+		})
+	})
+	t.Run("graphite-missing-match", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action: "graphite",
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+			},
+		})
+	})
+	t.Run("graphite-missing-labels", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action: "graphite",
+				Match:  "foo.*.bar",
+			},
+		})
+	})
+	t.Run("graphite-superflouous-sourceLabels", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action: "graphite",
+				Match:  "foo.*.bar",
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+				SourceLabels: []string{"foo"},
+			},
+		})
+	})
+	t.Run("graphite-superflouous-targetLabel", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action: "graphite",
+				Match:  "foo.*.bar",
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+				TargetLabel: "foo",
+			},
+		})
+	})
+	replacement := "foo"
+	t.Run("graphite-superflouous-replacement", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action: "graphite",
+				Match:  "foo.*.bar",
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+				Replacement: &replacement,
+			},
+		})
+	})
+	var re MultiLineRegex
+	t.Run("graphite-superflouous-regex", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action: "graphite",
+				Match:  "foo.*.bar",
+				Labels: map[string]string{
+					"foo": "bar",
+				},
+				Regex: &re,
+			},
+		})
+	})
+	t.Run("non-graphite-superflouos-match", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action:       "uppercase",
+				SourceLabels: []string{"foo"},
+				TargetLabel:  "foo",
+				Match:        "aaa",
+			},
+		})
+	})
+	t.Run("non-graphite-superflouos-labels", func(t *testing.T) {
+		f([]RelabelConfig{
+			{
+				Action:       "uppercase",
+				SourceLabels: []string{"foo"},
+				TargetLabel:  "foo",
+				Labels: map[string]string{
+					"foo": "Bar",
+				},
+			},
+		})
+	})
 }

lib/promrelabel/graphite.go

@@ -0,0 +1,212 @@
+package promrelabel
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+var graphiteMatchesPool = &sync.Pool{
+	New: func() interface{} {
+		return &graphiteMatches{}
+	},
+}
+
+type graphiteMatches struct {
+	a []string
+}
+
+type graphiteMatchTemplate struct {
+	sOrig string
+	parts []string
+}
+
+func (gmt *graphiteMatchTemplate) String() string {
+	return gmt.sOrig
+}
+
+type graphiteLabelRule struct {
+	grt         *graphiteReplaceTemplate
+	targetLabel string
+}
+
+func (glr graphiteLabelRule) String() string {
+	return fmt.Sprintf("replaceTemplate=%s, targetLabel=%s", glr.grt, glr.targetLabel)
+}
+
+func newGraphiteLabelRules(m map[string]string) []graphiteLabelRule {
+	a := make([]graphiteLabelRule, 0, len(m))
+	for labelName, replaceTemplate := range m {
+		a = append(a, graphiteLabelRule{
+			grt:         newGraphiteReplaceTemplate(replaceTemplate),
+			targetLabel: labelName,
+		})
+	}
+	return a
+}
+
+func newGraphiteMatchTemplate(s string) *graphiteMatchTemplate {
+	sOrig := s
+	var parts []string
+	for {
+		n := strings.IndexByte(s, '*')
+		if n < 0 {
+			parts = appendGraphiteMatchTemplateParts(parts, s)
+			break
+		}
+		parts = appendGraphiteMatchTemplateParts(parts, s[:n])
+		parts = appendGraphiteMatchTemplateParts(parts, "*")
+		s = s[n+1:]
+	}
+	return &graphiteMatchTemplate{
+		sOrig: sOrig,
+		parts: parts,
+	}
+}
+
+func appendGraphiteMatchTemplateParts(dst []string, s string) []string {
+	if len(s) == 0 {
+		// Skip empty part
+		return dst
+	}
+	return append(dst, s)
+}
+
+// Match matches s against gmt.
+//
+// On success it adds matched captures to dst and returns it with true.
+// Of failre it returns false.
+func (gmt *graphiteMatchTemplate) Match(dst []string, s string) ([]string, bool) {
+	dst = append(dst, s)
+	parts := gmt.parts
+	if len(parts) > 0 {
+		if p := parts[len(parts)-1]; p != "*" && !strings.HasSuffix(s, p) {
+			// fast path - suffix mismatch
+			return dst, false
+		}
+	}
+	for i := 0; i < len(parts); i++ {
+		p := parts[i]
+		if p != "*" {
+			if !strings.HasPrefix(s, p) {
+				// Cannot match the current part
+				return dst, false
+			}
+			s = s[len(p):]
+			continue
+		}
+		// Search for the matching substring for '*' part.
+		if i+1 >= len(parts) {
+			// Matching the last part.
+			if strings.IndexByte(s, '.') >= 0 {
+				// The '*' cannot match string with dots.
+				return dst, false
+			}
+			dst = append(dst, s)
+			return dst, true
+		}
+		// Search for the the start of the next part.
+		p = parts[i+1]
+		i++
+		n := strings.Index(s, p)
+		if n < 0 {
+			// Cannot match the next part
+			return dst, false
+		}
+		tmp := s[:n]
+		if strings.IndexByte(tmp, '.') >= 0 {
+			// The '*' cannot match string with dots.
+			return dst, false
+		}
+		dst = append(dst, tmp)
+		s = s[n+len(p):]
+	}
+	return dst, len(s) == 0
+}
+
+type graphiteReplaceTemplate struct {
+	sOrig string
+	parts []graphiteReplaceTemplatePart
+}
+
+func (grt *graphiteReplaceTemplate) String() string {
+	return grt.sOrig
+}
+
+type graphiteReplaceTemplatePart struct {
+	n int
+	s string
+}
+
+func newGraphiteReplaceTemplate(s string) *graphiteReplaceTemplate {
+	sOrig := s
+	var parts []graphiteReplaceTemplatePart
+	for {
+		n := strings.IndexByte(s, '$')
+		if n < 0 {
+			parts = appendGraphiteReplaceTemplateParts(parts, s, -1)
+			break
+		}
+		if n > 0 {
+			parts = appendGraphiteReplaceTemplateParts(parts, s[:n], -1)
+		}
+		s = s[n+1:]
+		if len(s) > 0 && s[0] == '{' {
+			// The index in the form ${123}
+			n = strings.IndexByte(s, '}')
+			if n < 0 {
+				parts = appendGraphiteReplaceTemplateParts(parts, "$"+s, -1)
+				break
+			}
+			idxStr := s[1:n]
+			s = s[n+1:]
+			idx, err := strconv.Atoi(idxStr)
+			if err != nil {
+				parts = appendGraphiteReplaceTemplateParts(parts, "${"+idxStr+"}", -1)
+			} else {
+				parts = appendGraphiteReplaceTemplateParts(parts, "${"+idxStr+"}", idx)
+			}
+		} else {
+			// The index in the form $123
+			n := 0
+			for n < len(s) && s[n] >= '0' && s[n] <= '9' {
+				n++
+			}
+			idxStr := s[:n]
+			s = s[n:]
+			idx, err := strconv.Atoi(idxStr)
+			if err != nil {
+				parts = appendGraphiteReplaceTemplateParts(parts, "$"+idxStr, -1)
+			} else {
+				parts = appendGraphiteReplaceTemplateParts(parts, "$"+idxStr, idx)
+			}
+		}
+	}
+	return &graphiteReplaceTemplate{
+		sOrig: sOrig,
+		parts: parts,
+	}
+}
+
+// Expand expands grt with the given matches into dst and returns it.
+func (grt *graphiteReplaceTemplate) Expand(dst []byte, matches []string) []byte {
+	for _, part := range grt.parts {
+		if n := part.n; n >= 0 && n < len(matches) {
+			dst = append(dst, matches[n]...)
+		} else {
+			dst = append(dst, part.s...)
+		}
+	}
+	return dst
+}
+
+func appendGraphiteReplaceTemplateParts(dst []graphiteReplaceTemplatePart, s string, n int) []graphiteReplaceTemplatePart {
+	if len(s) > 0 {
+		dst = append(dst, graphiteReplaceTemplatePart{
+			s: s,
+			n: n,
+		})
+	}
+	return dst
+}

lib/promrelabel/graphite_test.go

@@ -0,0 +1,93 @@
+package promrelabel
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestGraphiteTemplateMatchExpand(t *testing.T) {
+	f := func(matchTpl, s, replaceTpl, resultExpected string) {
+		t.Helper()
+		gmt := newGraphiteMatchTemplate(matchTpl)
+		matches, ok := gmt.Match(nil, s)
+		if !ok {
+			matches = nil
+		}
+		grt := newGraphiteReplaceTemplate(replaceTpl)
+		result := grt.Expand(nil, matches)
+		if string(result) != resultExpected {
+			t.Fatalf("unexpected result; got %q; want %q", result, resultExpected)
+		}
+	}
+	f("", "", "", "")
+	f("test.*.*.counter", "test.foo.bar.counter", "${2}_total", "bar_total")
+	f("test.*.*.counter", "test.foo.bar.counter", "$1_total", "foo_total")
+	f("test.*.*.counter", "test.foo.bar.counter", "total_$0", "total_test.foo.bar.counter")
+	f("test.dispatcher.*.*.*", "test.dispatcher.foo.bar.baz", "$3-$2-$1", "baz-bar-foo")
+	f("*.signup.*.*", "foo.signup.bar.baz", "$1-${3}_$2_total", "foo-baz_bar_total")
+}
+
+func TestGraphiteMatchTemplateMatch(t *testing.T) {
+	f := func(tpl, s string, matchesExpected []string, okExpected bool) {
+		t.Helper()
+		gmt := newGraphiteMatchTemplate(tpl)
+		tplGot := gmt.String()
+		if tplGot != tpl {
+			t.Fatalf("unexpected template; got %q; want %q", tplGot, tpl)
+		}
+		matches, ok := gmt.Match(nil, s)
+		if ok != okExpected {
+			t.Fatalf("unexpected ok result for tpl=%q, s=%q; got %v; want %v", tpl, s, ok, okExpected)
+		}
+		if okExpected {
+			if !reflect.DeepEqual(matches, matchesExpected) {
+				t.Fatalf("unexpected matches for tpl=%q, s=%q; got\n%q\nwant\n%q\ngraphiteMatchTemplate=%v", tpl, s, matches, matchesExpected, gmt)
+			}
+		}
+	}
+	f("", "", []string{""}, true)
+	f("", "foobar", nil, false)
+	f("foo", "foo", []string{"foo"}, true)
+	f("foo", "", nil, false)
+	f("foo.bar.baz", "foo.bar.baz", []string{"foo.bar.baz"}, true)
+	f("*", "foobar", []string{"foobar", "foobar"}, true)
+	f("**", "foobar", nil, false)
+	f("*", "foo.bar", nil, false)
+	f("*foo", "barfoo", []string{"barfoo", "bar"}, true)
+	f("*foo", "foo", []string{"foo", ""}, true)
+	f("*foo", "bar.foo", nil, false)
+	f("foo*", "foobar", []string{"foobar", "bar"}, true)
+	f("foo*", "foo", []string{"foo", ""}, true)
+	f("foo*", "foo.bar", nil, false)
+	f("foo.*", "foobar", nil, false)
+	f("foo.*", "foo.bar", []string{"foo.bar", "bar"}, true)
+	f("foo.*", "foo.bar.baz", nil, false)
+	f("*.*.baz", "foo.bar.baz", []string{"foo.bar.baz", "foo", "bar"}, true)
+	f("*.bar", "foo.bar.baz", nil, false)
+	f("*.bar", "foo.baz", nil, false)
+}
+
+func TestGraphiteReplaceTemplateExpand(t *testing.T) {
+	f := func(tpl string, matches []string, resultExpected string) {
+		t.Helper()
+		grt := newGraphiteReplaceTemplate(tpl)
+		tplGot := grt.String()
+		if tplGot != tpl {
+			t.Fatalf("unexpected template; got %q; want %q", tplGot, tpl)
+		}
+		result := grt.Expand(nil, matches)
+		if string(result) != resultExpected {
+			t.Fatalf("unexpected result for tpl=%q; got\n%q\nwant\n%q\ngraphiteReplaceTemplate=%v", tpl, result, resultExpected, grt)
+		}
+	}
+	f("", nil, "")
+	f("foo", nil, "foo")
+	f("$", nil, "$")
+	f("$1", nil, "$1")
+	f("${123", nil, "${123")
+	f("${123}", nil, "${123}")
+	f("${foo}45$sdf$3", nil, "${foo}45$sdf$3")
+	f("$1", []string{"foo", "bar"}, "bar")
+	f("$0-$1", []string{"foo", "bar"}, "foo-bar")
+	f("x-${0}-$1", []string{"foo", "bar"}, "x-foo-bar")
+}

lib/promrelabel/graphite_timing_test.go

@@ -0,0 +1,93 @@
+package promrelabel
+
+import (
+	"fmt"
+	"testing"
+)
+
+func BenchmarkGraphiteMatchTemplateMatch(b *testing.B) {
+	b.Run("match-short", func(b *testing.B) {
+		tpl := "*.bar.baz"
+		s := "foo.bar.baz"
+		benchmarkGraphiteMatchTemplateMatch(b, tpl, s, true)
+	})
+	b.Run("mismtach-short", func(b *testing.B) {
+		tpl := "*.bar.baz"
+		s := "foo.aaa"
+		benchmarkGraphiteMatchTemplateMatch(b, tpl, s, false)
+	})
+	b.Run("match-long", func(b *testing.B) {
+		tpl := "*.*.*.bar.*.baz"
+		s := "foo.bar.baz.bar.aa.baz"
+		benchmarkGraphiteMatchTemplateMatch(b, tpl, s, true)
+	})
+	b.Run("mismatch-long", func(b *testing.B) {
+		tpl := "*.*.*.bar.*.baz"
+		s := "foo.bar.baz.bar.aa.bb"
+		benchmarkGraphiteMatchTemplateMatch(b, tpl, s, false)
+	})
+}
+
+func benchmarkGraphiteMatchTemplateMatch(b *testing.B, tpl, s string, okExpected bool) {
+	gmt := newGraphiteMatchTemplate(tpl)
+	b.ReportAllocs()
+	b.SetBytes(1)
+	b.RunParallel(func(pb *testing.PB) {
+		var matches []string
+		for pb.Next() {
+			var ok bool
+			matches, ok = gmt.Match(matches[:0], s)
+			if ok != okExpected {
+				panic(fmt.Errorf("unexpected ok=%v for tpl=%q, s=%q", ok, tpl, s))
+			}
+		}
+	})
+}
+
+func BenchmarkGraphiteReplaceTemplateExpand(b *testing.B) {
+	b.Run("one-replacement", func(b *testing.B) {
+		tpl := "$1"
+		matches := []string{"", "foo"}
+		resultExpected := "foo"
+		benchmarkGraphiteReplaceTemplateExpand(b, tpl, matches, resultExpected)
+	})
+	b.Run("one-replacement-with-prefix", func(b *testing.B) {
+		tpl := "x-$1"
+		matches := []string{"", "foo"}
+		resultExpected := "x-foo"
+		benchmarkGraphiteReplaceTemplateExpand(b, tpl, matches, resultExpected)
+	})
+	b.Run("one-replacement-with-prefix-suffix", func(b *testing.B) {
+		tpl := "x-$1-y"
+		matches := []string{"", "foo"}
+		resultExpected := "x-foo-y"
+		benchmarkGraphiteReplaceTemplateExpand(b, tpl, matches, resultExpected)
+	})
+	b.Run("two-replacements", func(b *testing.B) {
+		tpl := "$1$2"
+		matches := []string{"", "foo", "bar"}
+		resultExpected := "foobar"
+		benchmarkGraphiteReplaceTemplateExpand(b, tpl, matches, resultExpected)
+	})
+	b.Run("two-replacements-with-delimiter", func(b *testing.B) {
+		tpl := "$1-$2"
+		matches := []string{"", "foo", "bar"}
+		resultExpected := "foo-bar"
+		benchmarkGraphiteReplaceTemplateExpand(b, tpl, matches, resultExpected)
+	})
+}
+
+func benchmarkGraphiteReplaceTemplateExpand(b *testing.B, tpl string, matches []string, resultExpected string) {
+	grt := newGraphiteReplaceTemplate(tpl)
+	b.ReportAllocs()
+	b.SetBytes(1)
+	b.RunParallel(func(pb *testing.PB) {
+		var b []byte
+		for pb.Next() {
+			b = grt.Expand(b[:0], matches)
+			if string(b) != resultExpected {
+				panic(fmt.Errorf("unexpected result; got\n%q\nwant\n%q", b, resultExpected))
+			}
+		}
+	})
+}

lib/promrelabel/if_expression.go

@@ -18,6 +18,14 @@ type IfExpression struct {
 	lfs []*labelFilter
 }
 
+// String returns string representation of ie.
+func (ie *IfExpression) String() string {
+	if ie == nil {
+		return ""
+	}
+	return ie.s
+}
+
 // Parse parses `if` expression from s and stores it to ie.
 func (ie *IfExpression) Parse(s string) error {
 	expr, err := metricsql.Parse(s)

lib/promrelabel/if_expression_test.go

@@ -2,6 +2,7 @@ package promrelabel
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"testing"
 
@@ -36,6 +37,36 @@ func TestIfExpressionParseSuccess(t *testing.T) {
 	f(`foo{bar=~"baz", x!="y"}`)
 }
 
+func TestIfExpressionMarshalUnmarshalJSON(t *testing.T) {
+	f := func(s, jsonExpected string) {
+		t.Helper()
+		var ie IfExpression
+		if err := ie.Parse(s); err != nil {
+			t.Fatalf("cannot parse ifExpression %q: %s", s, err)
+		}
+		data, err := json.Marshal(&ie)
+		if err != nil {
+			t.Fatalf("cannot marshal ifExpression %q: %s", s, err)
+		}
+		if string(data) != jsonExpected {
+			t.Fatalf("unexpected value after json marshaling;\ngot\n%s\nwant\n%s", data, jsonExpected)
+		}
+		var ie2 IfExpression
+		if err := json.Unmarshal(data, &ie2); err != nil {
+			t.Fatalf("cannot unmarshal ifExpression from json %q: %s", data, err)
+		}
+		data2, err := json.Marshal(&ie2)
+		if err != nil {
+			t.Fatalf("cannot marshal ifExpression2: %s", err)
+		}
+		if string(data2) != jsonExpected {
+			t.Fatalf("unexpected data after unmarshal/marshal cycle;\ngot\n%s\nwant\n%s", data2, jsonExpected)
+		}
+	}
+	f("foo", `"foo"`)
+	f(`{foo="bar",baz=~"x.*"}`, `"{foo=\"bar\",baz=~\"x.*\"}"`)
+}
+
 func TestIfExpressionUnmarshalFailure(t *testing.T) {
 	f := func(s string) {
 		t.Helper()

lib/promrelabel/relabel.go

@@ -25,6 +25,9 @@ type parsedRelabelConfig struct {
 	Action       string
 	If           *IfExpression
 
+	graphiteMatchTemplate *graphiteMatchTemplate
+	graphiteLabelRules    []graphiteLabelRule
+
 	regexOriginal                *regexp.Regexp
 	hasCaptureGroupInTargetLabel bool
 	hasCaptureGroupInReplacement bool
@@ -32,8 +35,8 @@ type parsedRelabelConfig struct {
 
 // String returns human-readable representation for prc.
 func (prc *parsedRelabelConfig) String() string {
-	return fmt.Sprintf("SourceLabels=%s, Separator=%s, TargetLabel=%s, Regex=%s, Modulus=%d, Replacement=%s, Action=%s",
+	return fmt.Sprintf("SourceLabels=%s, Separator=%s, TargetLabel=%s, Regex=%s, Modulus=%d, Replacement=%s, Action=%s, If=%s, graphiteMatchTemplate=%s, graphiteLabelRules=%s",
-		prc.SourceLabels, prc.Separator, prc.TargetLabel, prc.Regex.String(), prc.Modulus, prc.Replacement, prc.Action)
+		prc.SourceLabels, prc.Separator, prc.TargetLabel, prc.Regex, prc.Modulus, prc.Replacement, prc.Action, prc.If, prc.graphiteMatchTemplate, prc.graphiteLabelRules)
 }
 
 // Apply applies pcs to labels starting from the labelsOffset.
@@ -147,6 +150,26 @@ func (prc *parsedRelabelConfig) apply(labels []prompbmarshal.Label, labelsOffset
 		return labels
 	}
 	switch prc.Action {
+	case "graphite":
+		metricName := GetLabelValueByName(src, "__name__")
+		gm := graphiteMatchesPool.Get().(*graphiteMatches)
+		var ok bool
+		gm.a, ok = prc.graphiteMatchTemplate.Match(gm.a[:0], metricName)
+		if !ok {
+			// Fast path - name mismatch
+			graphiteMatchesPool.Put(gm)
+			return labels
+		}
+		// Slow path - extract labels from graphite metric name
+		bb := relabelBufPool.Get()
+		for _, gl := range prc.graphiteLabelRules {
+			bb.B = gl.grt.Expand(bb.B[:0], gm.a)
+			valueStr := string(bb.B)
+			labels = setLabelValue(labels, labelsOffset, gl.targetLabel, valueStr)
+		}
+		relabelBufPool.Put(bb)
+		graphiteMatchesPool.Put(gm)
+		return labels
 	case "replace":
 		// Store `replacement` at `target_label` if the `regex` matches `source_labels` joined with `separator`
 		bb := relabelBufPool.Get()

lib/promrelabel/relabel_test.go

@@ -1580,7 +1580,6 @@ func TestApplyRelabelConfigs(t *testing.T) {
 			},
 		})
 	})
-
 	t.Run("upper-lower-case", func(t *testing.T) {
 		f(`
 - action: uppercase
@@ -1618,8 +1617,7 @@ func TestApplyRelabelConfigs(t *testing.T) {
 				Value: "bar;foo",
 			},
 		})
-	})
+		f(`
-	f(`
 - action: lowercase
   source_labels: ["foo"]
   target_label: baz
@@ -1627,15 +1625,58 @@ func TestApplyRelabelConfigs(t *testing.T) {
   source_labels: ["bar"]
   target_label: baz
 `, []prompbmarshal.Label{
-		{
+			{
-			Name:  "qux",
+				Name:  "qux",
-			Value: "quux",
+				Value: "quux",
-		},
+			},
-	}, true, []prompbmarshal.Label{
+		}, true, []prompbmarshal.Label{
-		{
+			{
-			Name:  "qux",
+				Name:  "qux",
-			Value: "quux",
+				Value: "quux",
-		},
+			},
+		})
+	})
+	t.Run("graphite-match", func(t *testing.T) {
+		f(`
+- action: graphite
+  match: foo.*.baz
+  labels:
+    __name__: aaa
+    job: ${1}-zz
+`, []prompbmarshal.Label{
+			{
+				Name:  "__name__",
+				Value: "foo.bar.baz",
+			},
+		}, true, []prompbmarshal.Label{
+			{
+				Name:  "__name__",
+				Value: "aaa",
+			},
+			{
+				Name:  "job",
+				Value: "bar-zz",
+			},
+		})
+	})
+	t.Run("graphite-mismatch", func(t *testing.T) {
+		f(`
+- action: graphite
+  match: foo.*.baz
+  labels:
+    __name__: aaa
+    job: ${1}-zz
+`, []prompbmarshal.Label{
+			{
+				Name:  "__name__",
+				Value: "foo.bar.bazz",
+			},
+		}, true, []prompbmarshal.Label{
+			{
+				Name:  "__name__",
+				Value: "foo.bar.bazz",
+			},
+		})
 	})
 }
 

lib/promrelabel/testdata/relabel_configs_valid.yml

@@ -38,4 +38,12 @@
   action: uppercase
 - source_labels: [__tmp_uppercase]
   target_label: lower_aaa
-  action: lowercase
+  action: lowercase
+- if: '{foo=~"bar.*",baz="aa"}'
+  target_label: aaa
+  replacement: foobar
+- action: graphite
+  match: 'foo.*.bar'
+  labels:
+    instance: 'foo-$1'
+    job: '${1}-bar'