[Beats Management] APIs: List beats (elastic#19086)

* WIP checkin

* Add API integration test

* Converting to Jest test

* WIP checkin

* Fixing API for default case + adding test for it

* Fixing copy pasta typos

* Fixing variable name

* Using a single index

* Implementing GET /api/beats/agents API

* Updating mapping

x-pack/plugins/beats/server/routes/api/index.js

@@ -6,8 +6,10 @@
 
 import { registerCreateEnrollmentTokensRoute } from './register_create_enrollment_tokens_route';
 import { registerEnrollBeatRoute } from './register_enroll_beat_route';
+import { registerListBeatsRoute } from './register_list_beats_route';
 
 export function registerApiRoutes(server) {
   registerCreateEnrollmentTokensRoute(server);
   registerEnrollBeatRoute(server);
+  registerListBeatsRoute(server);
 }

x-pack/plugins/beats/server/routes/api/register_list_beats_route.js

@@ -0,0 +1,47 @@
+/*
+ * 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.
+ */
+
+import {
+  get,
+  omit
+} from "lodash";
+import { INDEX_NAMES } from "../../../common/constants";
+import { callWithRequestFactory } from '../../lib/client';
+import { wrapEsError } from "../../lib/error_wrappers";
+
+async function getBeats(callWithRequest) {
+  const params = {
+    index: INDEX_NAMES.BEATS,
+    type: '_doc',
+    q: 'type:beat'
+  };
+
+  const response = await callWithRequest('search', params);
+  return get(response, 'hits.hits', []);
+}
+
+// TODO: add license check pre-hook
+export function registerListBeatsRoute(server) {
+  server.route({
+    method: 'GET',
+    path: '/api/beats/agents',
+    handler: async (request, reply) => {
+      const callWithRequest = callWithRequestFactory(server, request);
+      let beats;
+
+      try {
+        beats = await getBeats(callWithRequest);
+      } catch (err) {
+        return reply(wrapEsError(err));
+      }
+
+      const response = {
+        beats: beats.map(beat => omit(beat._source.beat, ['access_token']))
+      };
+      reply(response);
+    }
+  });
+}

x-pack/test/api_integration/apis/beats/index.js

@@ -19,5 +19,6 @@ export default function ({ getService, loadTestFile }) {
 
     loadTestFile(require.resolve('./create_enrollment_tokens'));
     loadTestFile(require.resolve('./enroll_beat'));
+    loadTestFile(require.resolve('./list_beats'));
   });
 }

x-pack/test/api_integration/apis/beats/list_beats.js

@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+
+import expect from 'expect.js';
+
+export default function ({ getService }) {
+  const supertest = getService('supertest');
+  const esArchiver = getService('esArchiver');
+
+  describe('list_beats', () => {
+    const archive = 'beats/list';
+
+    beforeEach('load beats archive', () => esArchiver.load(archive));
+    afterEach('unload beats archive', () => esArchiver.unload(archive));
+
+    it('should return all beats', async () => {
+      const { body: apiResponse } = await supertest
+        .get(
+          '/api/beats/agents'
+        )
+        .expect(200);
+
+      const beatsFromApi = apiResponse.beats;
+
+      expect(beatsFromApi.length).to.be(3);
+      expect(beatsFromApi.filter(beat => beat.hasOwnProperty('verified_on')).length).to.be(1);
+      expect(beatsFromApi.find(beat => beat.hasOwnProperty('verified_on')).id).to.be('foo');
+    });
+
+    it('should not return access tokens', async () => {
+      const { body: apiResponse } = await supertest
+        .get(
+          '/api/beats/agents'
+        )
+        .expect(200);
+
+      const beatsFromApi = apiResponse.beats;
+
+      expect(beatsFromApi.length).to.be(3);
+      expect(beatsFromApi.filter(beat => beat.hasOwnProperty('access_token')).length).to.be(0);
+    });
+  });
+}

x-pack/test/functional/es_archives/beats/list/mappings.json

@@ -0,0 +1,82 @@
+{
+  "type": "index",
+  "value": {
+    "index": ".management-beats",
+    "settings": {
+      "index": {
+        "codec": "best_compression",
+        "number_of_shards": "1",
+        "auto_expand_replicas": "0-1",
+        "number_of_replicas": "0"
+      }
+    },
+    "mappings": {
+      "_doc": {
+        "dynamic": "strict",
+        "properties": {
+          "type": {
+            "type": "keyword"
+          },
+          "enrollment_token": {
+            "properties": {
+              "token": {
+                "type": "keyword"
+              },
+              "expires_on": {
+                "type": "date"
+              }
+            }
+          },
+          "configuration_block": {
+            "properties": {
+              "tag": {
+                "type": "keyword"
+              },
+              "type": {
+                "type": "keyword"
+              },
+              "block_yml": {
+                "type": "text"
+              }
+            }
+          },
+          "beat": {
+            "properties": {
+              "id": {
+                "type": "keyword"
+              },
+              "access_token": {
+                "type": "keyword"
+              },
+              "verified_on": {
+                "type": "date"
+              },
+              "type": {
+                "type": "keyword"
+              },
+              "host_ip": {
+                "type": "ip"
+              },
+              "host_name": {
+                "type": "keyword"
+              },
+              "ephemeral_id": {
+                "type": "keyword"
+              },
+              "local_configuration_yml": {
+                "type": "text"
+              },
+              "central_configuration_yml": {
+                "type": "text"
+              },
+              "metadata": {
+                "dynamic": "true",
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}