Java tutorial
package com.kixeye.chassis.support.test.metrics.graphite; /* * #%L * Chassis Support * %% * Copyright (C) 2014 KIXEYE, Inc * %% * Licensed 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. * #L% */ import com.codahale.metrics.MetricRegistry; import com.kixeye.chassis.support.metrics.MetricFilter; import com.kixeye.chassis.support.metrics.aws.MetricsCloudWatchReporter; import com.kixeye.chassis.support.metrics.codahale.MetricsGraphiteConfiguration; import com.kixeye.chassis.support.metrics.codahale.MetricsGraphiteReporterLoader; import com.netflix.config.ConfigurationManager; import org.junit.Assert; import org.junit.BeforeClass; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer; import org.springframework.context.ApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import java.util.Properties; import java.util.concurrent.TimeUnit; /** * @author dturner@kixeye.com */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(classes = { MetricsGraphiteConfigurationTest.class, MetricsGraphiteConfiguration.class }) public class MetricsGraphiteConfigurationTest { @Autowired private MetricsGraphiteConfiguration metricsGraphiteConfiguration; @Autowired private ApplicationContext applicationContext; @BeforeClass public static void beforeClass() { ConfigurationManager.getConfigInstance() .setProperty(removePlaceholder(MetricsCloudWatchReporter.APP_NAME_PROPERTY_NAME), "test"); ConfigurationManager.getConfigInstance() .setProperty(removePlaceholder(MetricsCloudWatchReporter.APP_VERSION_PROPERTY_NAME), "test"); ConfigurationManager.getConfigInstance() .setProperty(removePlaceholder(MetricsCloudWatchReporter.APP_ENVIRONMENT_PROPERTY_NAME), "test"); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_SERVER_PROPERTY_NAME), "localhost"); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PORT_PROPERTY_NAME), "80"); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_FILTER_PROPERTY_NAME), "foo=bar"); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PUBLISH_INTERVAL_PROPERTY_NAME), "1"); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder( MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PUBLISH_INTERVAL_UNIT_PROPERTY_NAME), "MINUTES"); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteConfiguration.METRICS_GRAPHITE_ENABLED_PROPERTY_NAME), "true"); } private static String removePlaceholder(String placeholder) { return placeholder.replaceFirst("\\$", "").replaceFirst("\\{", "").replaceFirst("}", ""); } @Test public void testStartContextWithReporterEnabled() { Assert.assertTrue(metricsGraphiteConfiguration.isEnabled()); Assert.assertNotNull(metricsGraphiteConfiguration.getReporterLoader()); } @Test public void testStopStartedReporter() { Assert.assertTrue(metricsGraphiteConfiguration.isEnabled()); Assert.assertNotNull(metricsGraphiteConfiguration.getReporterLoader()); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteConfiguration.METRICS_GRAPHITE_ENABLED_PROPERTY_NAME), "false"); Assert.assertFalse(metricsGraphiteConfiguration.isEnabled()); Assert.assertNull(metricsGraphiteConfiguration.getReporterLoader()); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteConfiguration.METRICS_GRAPHITE_ENABLED_PROPERTY_NAME), "true"); } @Test public void testRestartReporter() { Assert.assertTrue(metricsGraphiteConfiguration.isEnabled()); Assert.assertNotNull(metricsGraphiteConfiguration.getReporterLoader()); MetricsGraphiteReporterLoader originalLoader = metricsGraphiteConfiguration.getReporterLoader(); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteConfiguration.METRICS_GRAPHITE_ENABLED_PROPERTY_NAME), "false"); Assert.assertFalse(metricsGraphiteConfiguration.isEnabled()); Assert.assertNull(metricsGraphiteConfiguration.getReporterLoader()); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteConfiguration.METRICS_GRAPHITE_ENABLED_PROPERTY_NAME), "true"); Assert.assertTrue(metricsGraphiteConfiguration.isEnabled()); Assert.assertNotNull(metricsGraphiteConfiguration.getReporterLoader()); Assert.assertNotSame(originalLoader, metricsGraphiteConfiguration.getReporterLoader()); } @Test public void testUpdateFilter() { MetricFilter filter = metricsGraphiteConfiguration.getReporterLoader().getFilter(); Assert.assertEquals("foo=bar", filter.getStringValue()); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_FILTER_PROPERTY_NAME), "foo=baz"); Assert.assertNotEquals(filter, metricsGraphiteConfiguration.getReporterLoader().getFilter()); Assert.assertEquals("foo=baz", metricsGraphiteConfiguration.getReporterLoader().getFilter().getStringValue()); } @Test public void testUpdatePublishIntervalUnit() { TimeUnit originalIntervalUnit = metricsGraphiteConfiguration.getReporterLoader().getPublishIntervalUnit(); Assert.assertEquals(originalIntervalUnit, TimeUnit.MINUTES); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder( MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PUBLISH_INTERVAL_UNIT_PROPERTY_NAME), TimeUnit.SECONDS + ""); Assert.assertEquals(TimeUnit.SECONDS, metricsGraphiteConfiguration.getReporterLoader().getPublishIntervalUnit()); ConfigurationManager.getConfigInstance().setProperty( removePlaceholder( MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PUBLISH_INTERVAL_UNIT_PROPERTY_NAME), TimeUnit.MINUTES + ""); } @Test public void testUpdatePublishInterval() { int originalInterval = metricsGraphiteConfiguration.getReporterLoader().getPublishInterval(); int newInterval = originalInterval + 1; ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PUBLISH_INTERVAL_PROPERTY_NAME), newInterval + ""); Assert.assertEquals(newInterval, metricsGraphiteConfiguration.getReporterLoader().getPublishInterval()); } @Test public void testUpdateGraphiteServerPort() { int originalPort = metricsGraphiteConfiguration.getReporterLoader().getGraphitePort(); int newPort = originalPort + 1; ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_PORT_PROPERTY_NAME), newPort + ""); Assert.assertEquals(newPort, metricsGraphiteConfiguration.getReporterLoader().getGraphitePort()); } @Test public void testUpdateGraphiteServerHost() { String originalHost = metricsGraphiteConfiguration.getReporterLoader().getGraphiteServer(); Assert.assertNotEquals("127.0.0.1", originalHost); String newHost = "127.0.0.1"; ConfigurationManager.getConfigInstance().setProperty( removePlaceholder(MetricsGraphiteReporterLoader.METRICS_GRAPHITE_SERVER_PROPERTY_NAME), newHost); Assert.assertEquals(newHost, metricsGraphiteConfiguration.getReporterLoader().getGraphiteServer()); } @Bean public PropertyPlaceholderConfigurer propertyPlaceholderConfigurer() { return new PropertyPlaceholderConfigurer() { @Override protected String resolvePlaceholder(String placeholder, Properties props, int systemPropertiesMode) { return ConfigurationManager.getConfigInstance().getString(placeholder); } }; } @Bean public MetricRegistry metricRegistry() { return new MetricRegistry(); } }