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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7155) Add Influxdb metrics reporter
Date Fri, 09 Nov 2018 13:37:01 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16681433#comment-16681433
] 

ASF GitHub Bot commented on FLINK-7155:
---------------------------------------

1u0 commented on a change in pull request #6976: [FLINK-7155][metrics] Add new metrics reporter
to InfluxDB
URL: https://github.com/apache/flink/pull/6976#discussion_r232254767
 
 

 ##########
 File path: flink-metrics/flink-metrics-influxdb/src/test/java/org/apache/flink/metrics/influxdb/MetricMapperTest.java
 ##########
 @@ -0,0 +1,141 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.metrics.influxdb;
+
+import org.apache.flink.metrics.Counter;
+import org.apache.flink.metrics.Gauge;
+import org.apache.flink.metrics.Histogram;
+import org.apache.flink.metrics.HistogramStatistics;
+import org.apache.flink.metrics.Meter;
+
+import org.influxdb.dto.Point;
+import org.junit.Test;
+
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+/**
+ * Test for {@link MetricMapper} checking that metrics are converted to InfluxDB client objects
as expected.
+ */
+public class MetricMapperTest {
+
+	private final String name = "a-metric-name";
+	private final MeasurementInfo info = getMeasurementInfo(name);
+	private final Instant timestamp = Instant.now();
+
+	@Test
+	public void testMapGauge() {
+		verifyPoint(
+			MetricMapper.map(info, timestamp, (Gauge<Number>) () -> 42),
+			"value=42");
+
+		verifyPoint(
+			MetricMapper.map(info, timestamp, (Gauge<Number>) () -> null),
+			"value=null");
+
+		verifyPoint(
+			MetricMapper.map(info, timestamp, (Gauge<String>) () -> "hello"),
+			"value=hello");
+
+		verifyPoint(
+			MetricMapper.map(info, timestamp, (Gauge<Long>) () -> 42L),
+			"value=42");
+	}
+
+	@Test
+	public void testMapCounter() {
+		Counter counter = mock(Counter.class);
+		when(counter.getCount()).thenReturn(42L);
+
+		verifyPoint(
+			MetricMapper.map(info, timestamp, counter),
+			"count=42");
+	}
+
+	@Test
+	public void testMapHistogram() {
+		HistogramStatistics statistics = mock(HistogramStatistics.class);
 
 Review comment:
   Are there any reasons to not use mocks in this test class?

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> Add Influxdb metrics reporter
> -----------------------------
>
>                 Key: FLINK-7155
>                 URL: https://issues.apache.org/jira/browse/FLINK-7155
>             Project: Flink
>          Issue Type: Improvement
>          Components: Metrics
>            Reporter: Patrick Lucas
>            Assignee: Patrick Lucas
>            Priority: Major
>              Labels: pull-request-available
>
> [~jgrier] has a [simple Influxdb metrics reporter for Flink|https://github.com/jgrier/flink-stuff/tree/master/flink-influx-reporter]
that is a thing wrapper around [a lightweight, public-domain Influxdb reporter|https://github.com/davidB/metrics-influxdb]
for Codahale metrics.
> We can implement this very easily in Java in the same as as flink-metrics-graphite.



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