Merge pull request #131578 from mweinelt/influxdb-exporter

prometheus-influxdb-exporter: init at 0.8.0

nixos/doc/manual/from_md/release-notes/rl-2111.section.xml

@@ -125,6 +125,14 @@
           <link linkend="opt-services.prometheus.exporters.buildkite-agent.enable">services.prometheus.exporters.buildkite-agent</link>.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          <link xlink:href="https://github.com/prometheus/influxdb_exporter">influxdb-exporter</link>
+          a Prometheus exporter that exports metrics received on an
+          InfluxDB compatible endpoint is now available as
+          <link linkend="opt-services.prometheus.exporters.influxdb.enable">services.prometheus.exporters.influxdb</link>.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
   <section xml:id="sec-release-21.11-incompatibilities">

nixos/doc/manual/release-notes/rl-2111.section.md

@@ -39,6 +39,8 @@ pt-services.clipcat.enable).
 
 - [buildkite-agent-metrics](https://github.com/buildkite/buildkite-agent-metrics), a command-line tool for collecting Buildkite agent metrics, now has a Prometheus exporter available as [services.prometheus.exporters.buildkite-agent](#opt-services.prometheus.exporters.buildkite-agent.enable).
 
+- [influxdb-exporter](https://github.com/prometheus/influxdb_exporter) a Prometheus exporter that exports metrics received on an InfluxDB compatible endpoint is now available as [services.prometheus.exporters.influxdb](#opt-services.prometheus.exporters.influxdb.enable).
+
 ## Backward Incompatibilities {#sec-release-21.11-incompatibilities}
 
 - The `staticjinja` package has been upgraded from 1.0.4 to 3.0.1

nixos/modules/services/monitoring/prometheus/exporters.nix

@@ -33,6 +33,7 @@ let
     "domain"
     "dovecot"
     "fritzbox"
+    "influxdb"
     "json"
     "jitsi"
     "kea"

nixos/modules/services/monitoring/prometheus/exporters/influxdb.nix

@@ -0,0 +1,34 @@
+{ config, lib, pkgs, options }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.exporters.influxdb;
+in
+{
+  port = 9122;
+  extraOpts = {
+    sampleExpiry = mkOption {
+      type = types.str;
+      default = "5m";
+      example = "10m";
+      description = "How long a sample is valid for";
+    };
+    udpBindAddress = mkOption {
+      type = types.str;
+      default = ":9122";
+      example = "192.0.2.1:9122";
+      description = "Address on which to listen for udp packets";
+    };
+  };
+  serviceOpts = {
+    serviceConfig = {
+      RuntimeDirectory = "prometheus-influxdb-exporter";
+      ExecStart = ''
+        ${pkgs.prometheus-influxdb-exporter}/bin/influxdb_exporter \
+        --web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
+        --influxdb.sample-expiry ${cfg.sampleExpiry} ${concatStringsSep " " cfg.extraFlags}
+      '';
+    };
+  };
+}

nixos/tests/prometheus-exporters.nix

@@ -273,6 +273,26 @@ let
       '';
     };
 
+    influxdb = {
+      exporterConfig = {
+        enable = true;
+        sampleExpiry = "3s";
+      };
+      exporterTest = ''
+        wait_for_unit("prometheus-influxdb-exporter.service")
+        succeed(
+          "curl -XPOST http://localhost:9122/write --data-binary 'influxdb_exporter,distro=nixos,added_in=21.09 value=1'"
+        )
+        succeed(
+          "curl -sSf http://localhost:9122/metrics | grep 'nixos'"
+        )
+        execute("sleep 5")
+        fail(
+          "curl -sSf http://localhost:9122/metrics | grep 'nixos'"
+        )
+      '';
+    };
+
     jitsi = {
       exporterConfig = {
         enable = true;

pkgs/servers/monitoring/prometheus/influxdb-exporter.nix

@@ -0,0 +1,38 @@
+{ lib, buildGoModule, fetchFromGitHub, nixosTests }:
+
+buildGoModule rec {
+  pname = "influxdb_exporter";
+  version = "0.8.0";
+  rev = "v${version}";
+
+  src = fetchFromGitHub {
+    inherit rev;
+    owner = "prometheus";
+    repo = "influxdb_exporter";
+    sha256 = "sha256-aNj4ru3yDet+jdcEpckFVaymmjWmKzTMPcTxPMNFbgo=";
+  };
+
+  vendorSha256 = null;
+
+  buildFlagsArray = let
+    goPackagePath = "github.com/prometheus/influxdb_exporter";
+  in ''
+    -ldflags=
+        -s -w
+        -X github.com/prometheus/common/version.Version=${version}
+        -X github.com/prometheus/common/version.Revision=${rev}
+        -X github.com/prometheus/common/version.Branch=unknown
+        -X github.com/prometheus/common/version.BuildUser=nix@nixpkgs
+        -X github.com/prometheus/common/version.BuildDate=unknown
+  '';
+
+  passthru.tests = { inherit (nixosTests.prometheus-exporters) influxdb; };
+
+  meta = with lib; {
+    description = "Prometheus exporter that accepts InfluxDB metrics";
+    homepage = "https://github.com/prometheus/influxdb_exporter";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ hexa ];
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -20165,6 +20165,7 @@ in
   prometheus-fritzbox-exporter = callPackage ../servers/monitoring/prometheus/fritzbox-exporter.nix { };
   prometheus-gitlab-ci-pipelines-exporter = callPackage ../servers/monitoring/prometheus/gitlab-ci-pipelines-exporter.nix { };
   prometheus-haproxy-exporter = callPackage ../servers/monitoring/prometheus/haproxy-exporter.nix { };
+  prometheus-influxdb-exporter = callPackage ../servers/monitoring/prometheus/influxdb-exporter.nix { };
   prometheus-jitsi-exporter = callPackage ../servers/monitoring/prometheus/jitsi-exporter.nix { };
   prometheus-jmx-httpserver = callPackage ../servers/monitoring/prometheus/jmx-httpserver.nix {  };
   prometheus-json-exporter = callPackage ../servers/monitoring/prometheus/json-exporter.nix { };