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53 changes: 53 additions & 0 deletions
53
src/main/java/com/pinterest/secor/common/monitoring/PrometheusHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * 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 com.pinterest.secor.common.monitoring; | ||
|
|
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| import com.sun.net.httpserver.HttpExchange; | ||
| import com.twitter.ostrich.admin.CustomHttpHandler; | ||
| import io.micrometer.core.instrument.Metrics; | ||
| import io.micrometer.prometheus.PrometheusMeterRegistry; | ||
| import org.apache.http.HttpStatus; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| import java.util.Optional; | ||
|
|
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| /** | ||
| * Initializes Http Endpoint for Prometheus | ||
| * | ||
| * @author Paulius Dambrauskas ([email protected]) | ||
| */ | ||
| public class PrometheusHandler extends CustomHttpHandler { | ||
| private static final Logger LOG = LoggerFactory.getLogger(PrometheusHandler.class); | ||
|
|
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| @Override | ||
| public void handle(HttpExchange exchange) { | ||
| Optional<PrometheusMeterRegistry> registry = Metrics.globalRegistry.getRegistries().stream() | ||
| .filter(meterRegistry -> meterRegistry instanceof PrometheusMeterRegistry) | ||
| .map(meterRegistry -> (PrometheusMeterRegistry) meterRegistry) | ||
| .findFirst(); | ||
| if (registry.isPresent()) { | ||
| this.render(registry.get().scrape(), exchange, HttpStatus.SC_OK); | ||
| } else { | ||
| LOG.warn("Trying to scrape prometheus, while it is disabled, " + | ||
| "set \"secor.monitoring.metrics.collector.micrometer.prometheus.enabled\" to \"true\""); | ||
| this.render("Not Found", exchange, HttpStatus.SC_NOT_FOUND); | ||
| } | ||
| } | ||
| } |
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41 changes: 41 additions & 0 deletions
41
src/test/java/com/pinterest/secor/monitoring/PrometheusTest.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,41 @@ | ||
| package com.pinterest.secor.monitoring; | ||
|
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| import com.pinterest.secor.common.SecorConfig; | ||
| import com.pinterest.secor.common.monitoring.PrometheusHandler; | ||
| import com.sun.net.httpserver.HttpExchange; | ||
| import org.apache.commons.configuration.PropertiesConfiguration; | ||
| import org.junit.Test; | ||
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|
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| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| import static org.junit.Assert.assertTrue; | ||
| import static org.mockito.Mockito.mock; | ||
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| public class PrometheusTest { | ||
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| @Test | ||
| public void testPrometheusIntegration() throws IOException { | ||
| PropertiesConfiguration properties = new PropertiesConfiguration(); | ||
| properties.addProperty("secor.monitoring.metrics.collector.micrometer.prometheus.enabled", true); | ||
| SecorConfig config = new SecorConfig(properties); | ||
| MetricCollector collector = new MicroMeterMetricCollector(); | ||
| collector.initialize(config); | ||
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| final List<String> responses = new ArrayList<>(); | ||
| PrometheusHandler handler = new PrometheusHandler() { | ||
| @Override | ||
| public void render(String body, HttpExchange exchange, int code) { | ||
| responses.add(body); | ||
| } | ||
| }; | ||
| HttpExchange exchange = mock(HttpExchange.class); | ||
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| collector.gauge("test", 1, "topic"); | ||
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| handler.handle(exchange); | ||
| assertTrue(responses.get(0).contains("test{topic=\"topic\",} 1.0")); | ||
| } | ||
|
|
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| } |
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