[APM] Script for metric aggregation (#67964)

* [APM] Script for metric aggregation

* Retry mechanism

* Docs/comments

* compress histogram; support --filter & --only parameters

* Add flag for significant figures

* Ignore apm scripts

* Add tsconfig project for apm/scripts

src/dev/typescript/projects.ts

@@ -34,6 +34,10 @@ export const PROJECTS = [
     name: 'apm/cypress',
     disableTypeCheck: true,
   }),
+  new Project(resolve(REPO_ROOT, 'x-pack/plugins/apm/scripts/tsconfig.json'), {
+    name: 'apm/scripts',
+    disableTypeCheck: true,
+  }),
 
   // NOTE: using glob.sync rather than glob-all or globby
   // because it takes less than 10 ms, while the other modules

x-pack/plugins/apm/scripts/aggregate-latency-metrics.js

@@ -0,0 +1,31 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+// eslint-disable-next-line import/no-extraneous-dependencies
+require('@babel/register')({
+  extensions: ['.ts'],
+  plugins: [
+    '@babel/plugin-proposal-optional-chaining',
+    '@babel/plugin-proposal-nullish-coalescing-operator',
+  ],
+  presets: [
+    '@babel/typescript',
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+  ],
+});
+
+const {
+  aggregateLatencyMetrics,
+} = require('./aggregate-latency-metrics/index.ts');
+
+aggregateLatencyMetrics().catch((err) => {
+  if (err.meta && err.meta.body) {
+    // error from elasticsearch client
+    console.error(err.meta.body);
+  } else {
+    console.error(err);
+  }
+  process.exit(1);
+});