Prometheus metrics

changelog/fragments/1684437851-Expose-prometheus-metrics.yaml

@@ -0,0 +1,34 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: enhancement
+
+# Change summary; a 80ish characters long description of the change.
+summary: Expose prometheus metrics
+
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# NOTE: This field will be rendered only for breaking-change and known-issue kinds at the moment.
+description: |
+  Expose prometheus metrics on metrics listener (when enabled).
+  Ship prometheus metrics with apm.Tracer when tracer is enabled.
+
+# Affected component; a word indicating the component this changeset affects.
+component:
+
+# PR URL; optional; the PR number that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+pr: 2610
+
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+issue: 2542

go.mod

@@ -20,14 +20,16 @@ require (
 	github.com/mailru/easyjson v0.7.7
 	github.com/miolini/datacounter v1.0.3
 	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58
+	github.com/prometheus/client_golang v1.15.0
 	github.com/rs/xid v1.4.0
 	github.com/rs/zerolog v1.29.0
 	github.com/spf13/cobra v1.7.0
 	github.com/stretchr/testify v1.8.2
 	go.elastic.co/apm/module/apmchiv5/v2 v2.3.0
 	go.elastic.co/apm/module/apmelasticsearch/v2 v2.3.0
 	go.elastic.co/apm/module/apmhttp/v2 v2.3.0
-	go.elastic.co/apm/v2 v2.3.0
+	go.elastic.co/apm/module/apmprometheus/v2 v2.4.1
+	go.elastic.co/apm/v2 v2.4.1
 	go.elastic.co/ecszerolog v0.1.0
 	go.uber.org/zap v1.24.0
 	golang.org/x/sync v0.1.0
@@ -41,6 +43,7 @@ require (
 	github.com/Microsoft/go-winio v0.6.0 // indirect
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/armon/go-radix v1.0.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
@@ -61,13 +64,16 @@ require (
 	github.com/jcchavezs/porto v0.4.0 // indirect
 	github.com/joeshaw/multierror v0.0.0-20140124173710-69b34d4ec901 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
-	github.com/kr/pretty v0.2.1 // indirect
 	github.com/magefile/mage v1.14.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.18 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.42.0 // indirect
 	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/shirou/gopsutil v3.21.11+incompatible // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stretchr/objx v0.5.0 // indirect