Merge branch 'improvement/UTAPI-73/wait_for_redis_before_starting_server' into user/tmacro/utapi_metrics

libV2/cache/backend/redis.js

@@ -19,7 +19,10 @@ class RedisCache {
         moduleLogger.debug('Connecting to redis...');
         this._redis = new RedisClient(this._options);
         this._redis.connect();
-        return true;
+        return new Promise((resolve, reject) => {
+            this._redis.once('ready', () => resolve(true));
+            this._redis.once('error', error => reject(error));
+        });
     }
 
     async disconnect() {

libV2/tasks/BaseTask.js

@@ -48,6 +48,11 @@ class BaseTask extends Process {
         }
 
         if (this._enableMetrics) {
+            promClient.collectDefaultMetrics({
+                timeout: 10000,
+                gcDurationBuckets: [0.001, 0.01, 0.1, 1, 2, 5],
+            });
+
             this._metricsHandlers = {
                 ...this._registerDefaultMetricHandlers(),
                 ...this._registerMetricHandlers(),

libV2/tasks/CreateCheckpoint.js

@@ -29,8 +29,26 @@ class CreateCheckpoint extends BaseTask {
             labelNames: ['origin', 'containerName'],
         });
 
+        const getLastCheckpoint = this._getLastCheckpoint.bind(this);
+        const lastCheckpoint = new promClient.Gauge({
+            name: 'utapi_create_checkpoint_last_checkpoint_seconds',
+            help: 'Timestamp of the last successfully created checkpoint',
+            labelNames: ['origin', 'containerName'],
+            async collect() {
+                try {
+                    const timestamp = await getLastCheckpoint();
+                    if (timestamp !== null) {
+                        this.set(timestamp);
+                    }
+                } catch (error) {
+                    logger.error('error during metric collection', { error });
+                }
+            },
+        });
+
         return {
             created,
+            lastCheckpoint,
         };
     }
 
@@ -55,6 +73,25 @@ class CreateCheckpoint extends BaseTask {
         }
     }
 
+    async _getLastCheckpoint() {
+        const resp = await this.withWarp10(async warp10 => warp10.fetch({
+            className: 'utapi.checkpoint.master',
+            labels: {
+                node: warp10.nodeId,
+            },
+            start: 'now',
+            stop: -1,
+        }));
+
+        if (resp.result && (resp.result.length === 0 || resp.result[0] === '' || resp.result[0] === '[]')) {
+            return null;
+        }
+
+        const result = JSON.parse(resp.result[0])[0];
+        const timestamp = result.v[0][0];
+        return timestamp / 1000000;// Convert timestamp from microseconds to seconds
+    }
+
     async _execute(timestamp) {
         logger.debug('creating checkpoints', { checkpointTimestamp: timestamp });
         const status = await this.withWarp10(async warp10 => {

libV2/tasks/CreateSnapshot.js

@@ -29,8 +29,26 @@ class CreateSnapshot extends BaseTask {
             labelNames: ['origin', 'containerName'],
         });
 
+        const getLastSnapshot = this._getLastSnapshot.bind(this);
+        const lastSnapshot = new promClient.Gauge({
+            name: 'utapi_create_snapshot_last_snapshot_seconds',
+            help: 'Timestamp of the last successfully created snapshot',
+            labelNames: ['origin', 'containerName'],
+            async collect() {
+                try {
+                    const timestamp = await getLastSnapshot();
+                    if (timestamp !== null) {
+                        this.set(timestamp);
+                    }
+                } catch (error) {
+                    logger.error('error during metric collection', { error });
+                }
+            },
+        });
+
         return {
             created,
+            lastSnapshot,
         };
     }
 
@@ -55,6 +73,25 @@ class CreateSnapshot extends BaseTask {
         }
     }
 
+    async _getLastSnapshot() {
+        const resp = await this.withWarp10(async warp10 => warp10.fetch({
+            className: 'utapi.snapshot.master',
+            labels: {
+                node: warp10.nodeId,
+            },
+            start: 'now',
+            stop: -1,
+        }));
+
+        if (resp.result && (resp.result.length === 0 || resp.result[0] === '' || resp.result[0] === '[]')) {
+            return null;
+        }
+
+        const result = JSON.parse(resp.result[0])[0];
+        const timestamp = result.v[0][0];
+        return timestamp / 1000000;// Convert timestamp from microseconds to seconds
+    }
+
     async _execute(timestamp) {
         logger.debug('creating snapshots', { snapshotTimestamp: timestamp });
 

libV2/tasks/DiskUsage.js

@@ -1,4 +1,6 @@
 const async = require('async');
+const Path = require('path');
+const fs = require('fs');
 const promClient = require('prom-client');
 const BaseTask = require('./BaseTask');
 const config = require('../config');
@@ -55,9 +57,15 @@ class MonitorDiskUsage extends BaseTask {
             labelNames: ['origin', 'containerName'],
         });
 
-        const diskUsage = new promClient.Gauge({
-            name: 'utapi_monitor_disk_usage_bytes',
-            help: 'Total bytes used by warp 10',
+        const leveldbBytes = new promClient.Gauge({
+            name: 'utapi_monitor_disk_usage_leveldb_bytes',
+            help: 'Total bytes used by warp 10 leveldb',
+            labelNames: ['origin', 'containerName'],
+        });
+
+        const datalogBytes = new promClient.Gauge({
+            name: 'utapi_monitor_disk_usage_datalog_bytes',
+            help: 'Total bytes used by warp 10 datalog',
             labelNames: ['origin', 'containerName'],
         });
 
@@ -75,7 +83,8 @@ class MonitorDiskUsage extends BaseTask {
 
         return {
             isLocked,
-            diskUsage,
+            leveldbBytes,
+            datalogBytes,
             hardLimitRatio,
             hardLimitSetting,
         };
@@ -85,7 +94,8 @@ class MonitorDiskUsage extends BaseTask {
      * Metrics for MonitorDiskUsage
      * @typedef {Object} MonitorDiskUsageMetrics
      * @property {boolean} isLocked - Indicates if writes have been disabled for the monitored warp10
-     * @property {number} diskUsage - Total bytes used by warp 10
+     * @property {number} leveldbBytes - Total bytes used by warp 10 leveldb
+     * @property {number} datalogBytes - Total bytes used by warp 10 datalog
      * @property {number} hardLimitRatio - Percent of the hard limit used by warp 10
      * @property {number} hardLimitSetting - The hard limit setting in bytes
      */
@@ -104,8 +114,12 @@ class MonitorDiskUsage extends BaseTask {
             this._metricsHandlers.isLocked.set(metrics.isLocked ? 1 : 0);
         }
 
-        if (metrics.diskUsage !== undefined) {
-            this._metricsHandlers.diskUsage.set(metrics.diskUsage);
+        if (metrics.leveldbBytes !== undefined) {
+            this._metricsHandlers.leveldbBytes.set(metrics.leveldbBytes);
+        }
+
+        if (metrics.datalogBytes !== undefined) {
+            this._metricsHandlers.datalogBytes.set(metrics.datalogBytes);
         }
 
         if (metrics.hardLimitRatio !== undefined) {
@@ -129,9 +143,13 @@ class MonitorDiskUsage extends BaseTask {
         return this._program.lock !== undefined;
     }
 
-    _getUsage() {
-        moduleLogger.debug(`calculating disk usage for ${this._path}`);
-        return getFolderSize(this._path);
+    // eslint-disable-next-line class-methods-use-this
+    async _getUsage(path) {
+        moduleLogger.debug(`calculating disk usage for ${path}`);
+        if (!fs.existsSync(path)) {
+            throw Error(`failed to calculate usage for non-existent path ${path}`);
+        }
+        return getFolderSize(path);
     }
 
     async _expireMetrics(timestamp) {
@@ -249,16 +267,19 @@ class MonitorDiskUsage extends BaseTask {
             return;
         }
 
-        let size = null;
+        let leveldbBytes = null;
+        let datalogBytes = null;
         try {
-            size = await this._getUsage();
+            leveldbBytes = await this._getUsage(Path.join(this._path, 'leveldb'));
+            datalogBytes = await this._getUsage(Path.join(this._path, 'datalog'));
         } catch (error) {
             moduleLogger.error(`error calculating disk usage for ${this._path}`, { error });
             return;
         }
 
-        this._pushMetrics({ diskUsage: size });
+        this._pushMetrics({ leveldbBytes, datalogBytes });
 
+        const size = leveldbBytes + datalogBytes;
         if (this._hardLimit !== null) {
             moduleLogger.info(`warp 10 leveldb using ${formatDiskSize(size)} of disk space`, { usage: size });
 

tests/functional/hardLimit/testHardLimit.js

@@ -1,4 +1,5 @@
 const assert = require('assert');
+const fs = require('fs');
 const sinon = require('sinon');
 const uuid = require('uuid');
 const promClient = require('prom-client');
@@ -17,6 +18,7 @@ describe('Test MonitorDiskUsage hard limit', function () {
 
     beforeEach(async () => {
         path = `/tmp/diskusage-${uuid.v4()}`;
+        fs.mkdirSync(`${path}/datalog`, { recursive: true });
         promClient.register.clear();
         task = new MonitorDiskUsage({ warp10: warp10Clients, enableMetrics: true });
         await task.setup();
@@ -27,7 +29,7 @@ describe('Test MonitorDiskUsage hard limit', function () {
     afterEach(async () => task.join());
 
     it('should trigger a database lock if above the limit', async () => {
-        fillDir(path, { count: 1, size: 100 });
+        fillDir(`${path}/leveldb`, { count: 1, size: 100 });
         task._hardLimit = 1;
         const checkSpy = sinon.spy(task, '_checkHardLimit');
         const lockSpy = sinon.spy(task, '_disableWarp10Updates');
@@ -43,7 +45,7 @@ describe('Test MonitorDiskUsage hard limit', function () {
     });
 
     it('should trigger a database unlock if below the limit', async () => {
-        fillDir(path, { count: 1, size: 100 });
+        fillDir(`${path}/leveldb`, { count: 1, size: 100 });
         task._hardLimit = 10240;
         const checkSpy = sinon.spy(task, '_checkHardLimit');
         const lockSpy = sinon.spy(task, '_disableWarp10Updates');
@@ -56,7 +58,7 @@ describe('Test MonitorDiskUsage hard limit', function () {
     });
 
     it('should not throw when failing to calculate disk usage', async () => {
-        fillDir(path, { count: 1, size: 100 });
+        fillDir(`${path}/leveldb`, { count: 1, size: 100 });
         task._hardLimit = 1;
         sinon.stub(task, '_getUsage').throws();
         const _task = task.execute();

tests/functional/v2/task/testDiskUsage.js

@@ -1,4 +1,5 @@
 const assert = require('assert');
+const fs = require('fs');
 const promClient = require('prom-client');
 const uuid = require('uuid');
 
@@ -9,9 +10,10 @@ const { fillDir } = require('../../../utils/v2Data');
 const { assertMetricValue } = require('../../../utils/prom');
 
 class MonitorDiskUsageShim extends MonitorDiskUsage {
-    async _getUsage() {
-        this.usage = await super._getUsage();
-        return this.usage;
+    async _getUsage(path) {
+        const usage = await super._getUsage(path);
+        this.usage = (this.usage || 0) + usage;
+        return usage;
     }
 }
 
@@ -45,6 +47,7 @@ describe('Test MonitorDiskUsage', () => {
 
     beforeEach(async () => {
         path = `/tmp/diskusage-${uuid.v4()}`;
+        fs.mkdirSync(path);
         task = new MonitorDiskUsageShim({ warp10: [], enableMetrics: true });
         task._path = path;
         task._enabled = true;
@@ -56,12 +59,23 @@ describe('Test MonitorDiskUsage', () => {
         promClient.register.clear();
     });
 
-    testCases.map(testCase =>
+    testCases.map(testCase => {
         it(`should calculate disk usage for ${testCase.count} files of ${testCase.size} bytes each`,
             async () => {
-                fillDir(path, testCase);
+                fillDir(`${path}/leveldb`, testCase);
+                fillDir(`${path}/datalog`, testCase);
                 await task._execute();
-                assert.strictEqual(task.usage, testCase.expected + emptyDirSize + (emptyFileSize * testCase.count));
-                await assertMetricValue('utapi_monitor_disk_usage_bytes', task.usage);
-            }));
+                const expectedSingleSize = emptyDirSize + testCase.expected + (emptyFileSize * testCase.count);
+                const expectedTotalSize = expectedSingleSize * 2;
+                assert.strictEqual(task.usage, expectedTotalSize);
+                // Should equal the usage minus the empty datalog
+                await assertMetricValue('utapi_monitor_disk_usage_leveldb_bytes', expectedSingleSize);
+                await assertMetricValue('utapi_monitor_disk_usage_datalog_bytes', expectedSingleSize);
+            });
+    });
+
+    it('should fail if a subpath does not exists', () => {
+        assert.doesNotThrow(() => task._execute());
+        assert.strictEqual(task.usage, undefined);
+    });
 });

warpscript/utapi/createCheckpoint.mc2

@@ -115,7 +115,16 @@
       %> FOREACH
      %>
     <%
-       DROP 0 STOP
+      // If no new events were found
+      // - drop the empty list
+      // - write a new master checkpoint
+      // - return 0
+      DROP
+      NEWGTS $master_checkpoint_class RENAME
+      $endTimestamp NaN NaN NaN 0 ADDVALUE
+      { 'node' $nodeId } RELABEL
+      $write_token UPDATE
+      0 STOP
     %> IFTE
 
     0 'checkpoints' STORE