Migrated to opendistro 1.0.0-rc1

Author: aparo

.gitignore

@@ -21,3 +21,5 @@ gradle-wrapper.properties
 
 # Mac
 .DS_Store
+.metals/
+.vscode/

README.md

@@ -1,9 +1,7 @@
-![CI](https://github.com/vvanholl/elasticsearch-prometheus-exporter/workflows/CI/badge.svg?branch=master)
+# Prometheus Exporter Plugin for OpenSearch
 
-# Prometheus Exporter Plugin for Elasticsearch
-
-This is a builtin exporter from Elasticsearch to Prometheus.
-It collects all relevant metrics and makes them available to Prometheus via the Elasticsearch REST API.
+This is a builtin exporter from OpenSearch to Prometheus based on the code of Vincent Van Hollebeke and others at https://github.com/vvanholl/elasticsearch-prometheus-exporter .
+It collects all relevant metrics and makes them available to Prometheus via the OpenSearch REST API.
 
 **Currently, the available metrics are:**
 
@@ -19,54 +17,19 @@ It collects all relevant metrics and makes them available to Prometheus via the
     - File System
     - Circuit Breaker
 - Indices status
-- Cluster settings (selected [disk allocation settings](https://www.elastic.co/guide/en/elasticsearch/reference/master/disk-allocator.html) only)
+- Cluster settings
 
 ## Compatibility matrix
 
-### Version 7.X
-
-| Elasticsearch  | Plugin         | Release date |
-| -------------- | -------------- | ------------ |
-| 7.13.2         | 7.13.2.0       | Jun 15, 2021 |
-| 7.13.1         | 7.13.1.0       | Jun 12, 2021 |
-| 7.13.0         | 7.13.0.0       | May 27, 2021 |
-| 7.12.1         | 7.12.1.0       | May 01, 2021 |
-| 7.12.0         | 7.12.0.0       | Apr 04, 2021 |
-| 7.11.2         | 7.11.2.0       | Mar 20, 2021 |
-| 7.11.1         | 7.11.1.0       | Feb 22, 2021 |
-| 7.10.2         | 7.10.2.0       | Jan 24, 2021 |
-| 7.10.1         | 7.10.1.0       | Dec 13, 2020 |
-| 7.10.0         | 7.10.0.0       | Nov 15, 2020 |
-| 7.9.3          | 7.9.3.0        | Oct 22, 2020 |
-| 7.9.2          | 7.9.2.0        | Oct 04, 2020 |
-| 7.9.1          | 7.9.1.0        | Sep 06, 2020 |
-| 7.9.0          | 7.9.0.0        | Aug 18, 2020 |
-| 7.8.1          | 7.8.1.0        | Aug 10, 2020 |
-| 7.8.0          | 7.8.0.0        | Jun 22, 2020 |
-| 7.7.1          | 7.7.1.0        | Jun 04, 2020 |
-| 7.7.0          | 7.7.0.0        | May 14, 2020 |
-| 7.6.2          | 7.6.2.0        | Apr  6, 2020 |
-| 7.6.1          | 7.6.1.0        | Mar 30, 2020 |
-| 7.6.0          | 7.6.0.0        | Feb 12, 2020 |
-| 7.5.2          | 7.5.2.0        | Jan 25, 2020 |
-| 7.5.1          | 7.5.1.0        | Jan 21, 2020 |
-| 7.5.0          | 7.5.0.0        | Jan 16, 2020 |
-| 7.4.2          | 7.4.2.0        | Jan 13, 2020 |
-| 7.4.1          | 7.4.1.0        | Jan 13, 2020 |
-| 7.4.0          | 7.4.0.0        | Jan 07, 2020 |
-| 7.3.2          | 7.3.2.0        | Oct 05, 2019 |
-| 7.3.1          | 7.3.1.0        | Sep 18, 2019 |
-| 7.3.0          | 7.3.0.0        | Sep 17, 2019 |
-| 7.2.1          | 7.2.1.0        | Jul 31, 2019 |
-| 7.2.0          | 7.2.0.0        | Jul 12, 2019 |
-| 7.1.1          | 7.1.1.0        | May 31, 2019 |
-| 7.1.0          | 7.1.0.0        | May 23, 2019 |
-| 7.0.1          | 7.0.1.0        | May 08, 2019 |
-| 7.0.0          | 7.0.0.0        | Apr 11, 2019 |
+### Versions
+
+| OpenSearch  | Plugin         | Release date |
+| ----------- | -------------- | ------------ |
+| 1.0.0-RC1   | 1.0.0-RC1      | Jun 24, 2021 |
 
 ## Install
 
-`./bin/elasticsearch-plugin install -b https://github.com/vvanholl/elasticsearch-prometheus-exporter/releases/download/7.13.2.0/prometheus-exporter-7.13.2.0.zip`
+`./bin/opensearch-plugin install -b https://github.com/aparo/opensearch-prometheus-exporter/releases/download/1.0.0-RC1/prometheus-exporter-1.0.0-RC1.zip`
 
 **Do not forget to restart the node after the installation!**
 
@@ -87,19 +50,19 @@ To disable exporting cluster settings use:
 prometheus.cluster.settings: false
 ```
 
-These settings can be also [updated dynamically](https://www.elastic.co/guide/en/elasticsearch/reference/master/cluster-update-settings.html).
+These settings can be also [updated dynamically](https://www.elastic.co/guide/en/opensearch/reference/master/cluster-update-settings.html).
 
 ## Uninstall
 
-`./bin/elasticsearch-plugin remove prometheus-exporter`
+`./bin/opensearch-plugin remove prometheus-exporter`
 
 Do not forget to restart the node after installation!
 
 ## Usage
 
 Metrics are directly available at:
 
-    http://<your-elasticsearch-host>:9200/_prometheus/metrics
+    http://<your-opensearch-host>:9200/_prometheus/metrics
 
 As a sample result, you get:
 
@@ -134,7 +97,7 @@ On your Prometheus servers, configure a new job as usual.
 For example, if you have a cluster of 3 nodes:
 
 ```YAML
-- job_name: elasticsearch
+- job_name: opensearch
   scrape_interval: 10s
   metrics_path: "/_prometheus/metrics"
   static_configs:
@@ -148,34 +111,7 @@ Of course, you could use the service discovery service instead of a static confi
 
 Just keep in mind that `metrics_path` must be `/_prometheus/metrics`, otherwise Prometheus will find no metric.
 
-## Project sources
-
-The Maven project site is available at [GitHub](https://github.com/vvanholl/elasticsearch-prometheus-exporter).
-
-## Testing
-
-Project contains [integration tests](src/test/resources/rest-api-spec) implemented using
-[rest layer](https://github.com/elastic/elasticsearch/blob/master/TESTING.asciidoc#testing-the-rest-layer)
-framework.
-
-To run everything similar to the GitHub Actions pipeline you can do:
-```
-docker run -v $(pwd):/home/gradle gradle:7.0.2-jdk16 su gradle -c 'gradle check'
-```
-NOTE: Please keep version in sync with .github/workflows/ci.yml
-
-
-Complete test suite is run using:
-```
-gradle clean check
-```
-
-To run individual test file use:
-```
-gradle :integTest \
-  -Dtests.class=org.elasticsearch.rest.PrometheusRestHandlerClientYamlTestSuiteIT \
-  -Dtests.method="test {yaml=resthandler/20_metrics/Prometheus metrics can be pulled}"
-```
+If you enable security in OpenSearch, remember to set up the credentials also in Prometheus configuration.
 
 ## Credits
 

build.gradle

@@ -12,7 +12,7 @@ buildscript {
     }
 
     dependencies {
-        classpath "org.elasticsearch.gradle:build-tools:${es_version}"
+        classpath "org.opensearch.gradle:build-tools:${es_version}"
         classpath group: 'javax.xml.bind', name: 'jaxb-api', version: '2.3.0'
         classpath group: 'com.sun.xml.bind', name: 'jaxb-core', version: '2.3.0'
         classpath group: 'com.sun.xml.bind', name: 'jaxb-impl', version: '2.3.0'
@@ -27,9 +27,9 @@ plugins {
 
 apply plugin: 'java'
 apply plugin: 'idea'
-apply plugin: 'elasticsearch.esplugin'
-apply plugin: 'elasticsearch.rest-resources'
-apply plugin: 'elasticsearch.testclusters'
+apply plugin: 'opensearch.opensearchplugin'
+apply plugin: 'opensearch.rest-resources'
+apply plugin: 'opensearch.testclusters'
 
 // Uncomment if you want to use: System.out.println("Emergency!");
 // Logs are found in build/testcluster/integTest-*/logs/ folder.
@@ -43,7 +43,7 @@ licenseFile = rootProject.file('LICENSE.txt')
 noticeFile = rootProject.file('NOTICE.txt')
 
 // POM validation can be enabled
-validateElasticPom.enabled = false
+validatePom.enabled = false
 
 // No unit tests in this plugin
 test.enabled = false
@@ -60,7 +60,7 @@ repositories {
 
 ext {
     versions = [
-        "elasticsearch": es_version,
+        "opensearch": es_version,
         "prometheus"   : "0.8.0",
         "log4j"        : "2.11.1",
         "junit"        : "4.12"
@@ -71,14 +71,14 @@ configurations {
     runtime
     releaseJars {
         extendsFrom runtime
-        exclude group: "org.elasticsearch"
+        exclude group: "org.opensearch"
         exclude group: "com.fasterxml.jackson.core", module: "jackson-core"
         exclude group: "org.apache.logging.log4j"
     }
 }
 
 dependencies {
-    api "org.elasticsearch:elasticsearch:${versions.elasticsearch}"
+    api "org.opensearch:opensearch:${versions.opensearch}"
     api "io.prometheus:simpleclient:${versions.prometheus}"
     api "io.prometheus:simpleclient_common:${versions.prometheus}"
     api "org.apache.logging.log4j:log4j-api:${versions.log4j}"
@@ -92,7 +92,7 @@ tasks.withType(JavaCompile) {
     options.compilerArgs << "-Xlint:unchecked,deprecation"
 }
 
-esplugin {
+opensearchplugin {
     licenseFile rootProject.file('LICENSE.txt')
     noticeFile rootProject.file('NOTICE.txt')
     name pluginName

gradle.properties

@@ -1,11 +1,11 @@
-group = org.elasticsearch.plugin.prometheus
+group = org.opensearch.plugin.prometheus
 
-version = 7.13.2.1-SNAPSHOT
+version = 1.0.0-rc1
 
 pluginName = prometheus-exporter
-pluginClassname = org.elasticsearch.plugin.prometheus.PrometheusExporterPlugin
-pluginDescription = Export Elasticsearch metrics to Prometheus
+pluginClassname = org.opensearch.plugin.prometheus.PrometheusExporterPlugin
+pluginDescription = Export OpenSearch metrics to Prometheus
 
 github_token = secret
-github_owner = vvanholl
-github_repo = elasticsearch-prometheus-exporter
+github_owner = aparo
+github_repo = opensearch-prometheus-exporter

src/main/java/org/compuscene/metrics/prometheus/PrometheusMetricsCatalog.java

@@ -19,7 +19,7 @@
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.elasticsearch.rest.prometheus.RestPrometheusMetricsAction;
+import org.opensearch.rest.prometheus.RestPrometheusMetricsAction;
 
 import java.io.IOException;
 import java.io.StringWriter;

src/main/java/org/compuscene/metrics/prometheus/PrometheusMetricsCollector.java

@@ -17,26 +17,26 @@
 
 package org.compuscene.metrics.prometheus;
 
-import org.elasticsearch.action.ClusterStatsData;
-import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;
-import org.elasticsearch.action.admin.cluster.node.stats.NodeStats;
-import org.elasticsearch.action.admin.indices.stats.CommonStats;
-import org.elasticsearch.action.admin.indices.stats.IndexStats;
-import org.elasticsearch.action.admin.indices.stats.IndicesStatsResponse;
-import org.elasticsearch.cluster.health.ClusterIndexHealth;
-import org.elasticsearch.cluster.node.DiscoveryNodeRole;
-import org.elasticsearch.http.HttpStats;
-import org.elasticsearch.indices.NodeIndicesStats;
-import org.elasticsearch.indices.breaker.AllCircuitBreakerStats;
-import org.elasticsearch.indices.breaker.CircuitBreakerStats;
-import org.elasticsearch.ingest.IngestStats;
-import org.elasticsearch.monitor.fs.FsInfo;
-import org.elasticsearch.monitor.jvm.JvmStats;
-import org.elasticsearch.monitor.os.OsStats;
-import org.elasticsearch.monitor.process.ProcessStats;
-import org.elasticsearch.script.ScriptStats;
-import org.elasticsearch.threadpool.ThreadPoolStats;
-import org.elasticsearch.transport.TransportStats;
+import org.opensearch.action.ClusterStatsData;
+import org.opensearch.action.admin.cluster.health.ClusterHealthResponse;
+import org.opensearch.action.admin.cluster.node.stats.NodeStats;
+import org.opensearch.action.admin.indices.stats.CommonStats;
+import org.opensearch.action.admin.indices.stats.IndexStats;
+import org.opensearch.action.admin.indices.stats.IndicesStatsResponse;
+import org.opensearch.cluster.health.ClusterIndexHealth;
+import org.opensearch.cluster.node.DiscoveryNodeRole;
+import org.opensearch.http.HttpStats;
+import org.opensearch.indices.NodeIndicesStats;
+import org.opensearch.indices.breaker.AllCircuitBreakerStats;
+import org.opensearch.indices.breaker.CircuitBreakerStats;
+import org.opensearch.ingest.IngestStats;
+import org.opensearch.monitor.fs.FsInfo;
+import org.opensearch.monitor.jvm.JvmStats;
+import org.opensearch.monitor.os.OsStats;
+import org.opensearch.monitor.process.ProcessStats;
+import org.opensearch.script.ScriptStats;
+import org.opensearch.threadpool.ThreadPoolStats;
+import org.opensearch.transport.TransportStats;
 
 import java.util.HashMap;
 import java.util.List;
@@ -130,7 +130,7 @@ private void registerNodeMetrics() {
     private void updateNodeMetrics(NodeStats ns) {
         if (ns != null) {
 
-            // Plugins can introduce custom node roles from 7.3.0: https://github.com/elastic/elasticsearch/pull/43175
+            // Plugins can introduce custom node roles from 7.3.0: https://github.com/elastic/opensearch/pull/43175
             // TODO(lukas-vlcek): List of node roles can not be static but needs to be created dynamically.
             Map<String, Integer> roles = new HashMap<>();
 
@@ -413,7 +413,7 @@ private void registerPerIndexMetrics() {
         catalog.registerClusterGauge("index_fielddata_evictions_count", "Count of evictions in field data cache", "index", "context");
 
         // Percolator cache was removed in ES 5.x
-        // See https://github.com/elastic/elasticsearch/commit/80fee8666ff5dd61ba29b175857cf42ce3b9eab9
+        // See https://github.com/elastic/opensearch/commit/80fee8666ff5dd61ba29b175857cf42ce3b9eab9
 
         catalog.registerClusterGauge("index_completion_size_bytes", "Size of completion suggest statistics", "index", "context");
 
@@ -530,7 +530,7 @@ private void updatePerIndexContextMetrics(String indexName, String context, Comm
         catalog.setClusterGauge("index_fielddata_evictions_count", idx.getFieldData().getEvictions(), indexName, context);
 
         // Percolator cache was removed in ES 5.x
-        // See https://github.com/elastic/elasticsearch/commit/80fee8666ff5dd61ba29b175857cf42ce3b9eab9
+        // See https://github.com/elastic/opensearch/commit/80fee8666ff5dd61ba29b175857cf42ce3b9eab9
 
         catalog.setClusterGauge("index_completion_size_bytes", idx.getCompletion().getSizeInBytes(), indexName, context);
 
@@ -902,8 +902,8 @@ private void registerESSettings() {
     private void updateESSettings(ClusterStatsData stats) {
         if (stats != null) {
             catalog.setClusterGauge("cluster_routing_allocation_disk_threshold_enabled", Boolean.TRUE.equals(stats.getThresholdEnabled()) ? 1 : 0);
-            // According to Elasticsearch documentation the following settings must be set either in pct or bytes size.
-            // Mixing is not allowed. We rely on Elasticsearch to do all necessary checks and we simply
+            // According to OpenSearch documentation the following settings must be set either in pct or bytes size.
+            // Mixing is not allowed. We rely on OpenSearch to do all necessary checks and we simply
             // output all those metrics that are not null. If this will lead to mixed metric then we do not
             // consider it our fault.
             if (stats.getDiskLowInBytes() != null) { catalog.setClusterGauge("cluster_routing_allocation_disk_watermark_low_bytes", stats.getDiskLowInBytes()); }

src/main/java/org/compuscene/metrics/prometheus/PrometheusSettings.java

@@ -17,20 +17,20 @@
 
 package org.compuscene.metrics.prometheus;
 
-import org.elasticsearch.common.settings.ClusterSettings;
-import org.elasticsearch.common.settings.Setting;
-import org.elasticsearch.common.settings.Settings;
+import org.opensearch.common.settings.ClusterSettings;
+import org.opensearch.common.settings.Setting;
+import org.opensearch.common.settings.Settings;
 
 /**
  * A container to keep settings for prometheus up to date with cluster setting changes.
  *
  * In order to make the settings dynamically updatable we took some inspiration from implementation
- * and use of DiskThresholdSettings class in Elasticsearch.
+ * and use of DiskThresholdSettings class in OpenSearch.
  */
 public class PrometheusSettings {
 
     // These settings become part of cluster state available via HTTP at
-    // curl <elasticsearch>/_cluster/settings?include_defaults=true&filter_path=defaults.prometheus
+    // curl <opensearch>/_cluster/settings?include_defaults=true&filter_path=defaults.prometheus
     // It is important to keep it under reasonable namespace to avoid collision with
     // other plugins or future/commercial parts of Elastic Stack itself.
     // Namespace "prometheus" sounds like safe bet for now.