001/*
002 * Copyright 2012-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.boot.actuate.autoconfigure.metrics.web.client;
018
019import io.micrometer.core.instrument.MeterRegistry;
020import io.micrometer.core.instrument.config.MeterFilter;
021
022import org.springframework.boot.actuate.autoconfigure.metrics.MetricsAutoConfiguration;
023import org.springframework.boot.actuate.autoconfigure.metrics.MetricsProperties;
024import org.springframework.boot.actuate.autoconfigure.metrics.OnlyOnceLoggingDenyMeterFilter;
025import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
026import org.springframework.boot.autoconfigure.AutoConfigureAfter;
027import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
028import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
029import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
030import org.springframework.context.annotation.Bean;
031import org.springframework.context.annotation.Configuration;
032import org.springframework.context.annotation.Import;
033import org.springframework.core.annotation.Order;
034
035/**
036 * {@link EnableAutoConfiguration Auto-configuration} for HTTP client-related metrics.
037 *
038 * @author Jon Schneider
039 * @author Phillip Webb
040 * @author Stephane Nicoll
041 * @since 2.1.0
042 */
043@Configuration
044@AutoConfigureAfter({ MetricsAutoConfiguration.class,
045                SimpleMetricsExportAutoConfiguration.class })
046@ConditionalOnClass(MeterRegistry.class)
047@ConditionalOnBean(MeterRegistry.class)
048@Import({ RestTemplateMetricsConfiguration.class, WebClientMetricsConfiguration.class })
049public class HttpClientMetricsAutoConfiguration {
050
051        private final MetricsProperties properties;
052
053        public HttpClientMetricsAutoConfiguration(MetricsProperties properties) {
054                this.properties = properties;
055        }
056
057        @Bean
058        @Order(0)
059        public MeterFilter metricsHttpClientUriTagFilter() {
060                String metricName = this.properties.getWeb().getClient().getRequestsMetricName();
061                MeterFilter denyFilter = new OnlyOnceLoggingDenyMeterFilter(() -> String
062                                .format("Reached the maximum number of URI tags for '%s'. Are you using "
063                                                + "'uriVariables'?", metricName));
064                return MeterFilter.maximumAllowableTags(metricName, "uri",
065                                this.properties.getWeb().getClient().getMaxUriTags(), denyFilter);
066        }
067
068}