diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.java
index 910e3d67b3b..a011ddf7b96 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.java
@@ -16,25 +16,21 @@
package org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus;
-import java.net.UnknownHostException;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
-
-import javax.annotation.PreDestroy;
+import java.time.Duration;
+import java.util.Map;
import io.micrometer.core.instrument.Clock;
import io.micrometer.prometheus.PrometheusConfig;
import io.micrometer.prometheus.PrometheusMeterRegistry;
import io.prometheus.client.CollectorRegistry;
import io.prometheus.client.exporter.PushGateway;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnEnabledEndpoint;
import org.springframework.boot.actuate.autoconfigure.metrics.CompositeMeterRegistryAutoConfiguration;
import org.springframework.boot.actuate.autoconfigure.metrics.MetricsAutoConfiguration;
import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusPushGatewayManager;
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusPushGatewayManager.ShutdownOperation;
import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusScrapeEndpoint;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
@@ -53,6 +49,7 @@ import org.springframework.core.env.Environment;
*
* @since 2.0.0
* @author Jon Schneider
+ * @author David J. M. Karlsen
*/
@Configuration
@AutoConfigureBefore({ CompositeMeterRegistryAutoConfiguration.class,
@@ -100,108 +97,42 @@ public class PrometheusMetricsExportAutoConfiguration {
/**
* Configuration for Prometheus
* Pushgateway.
- *
- * @author David J. M. Karlsen
*/
@Configuration
@ConditionalOnClass(PushGateway.class)
@ConditionalOnProperty(prefix = "management.metrics.export.prometheus.pushgateway", name = "enabled")
public static class PrometheusPushGatewayConfiguration {
+ /**
+ * The fallback job name. We use 'spring' since there's a history of Prometheus
+ * spring integration defaulting to that name from when Prometheus integration
+ * didn't exist in Spring itself.
+ */
+ private static final String FALLBACK_JOB = "spring";
+
@Bean
- public PushGatewayHandler pushGatewayHandler(CollectorRegistry collectorRegistry,
+ @ConditionalOnMissingBean
+ public PrometheusPushGatewayManager prometheusPushGatewayManager(
+ CollectorRegistry collectorRegistry,
PrometheusProperties prometheusProperties, Environment environment) {
- return new PushGatewayHandler(collectorRegistry, prometheusProperties,
- environment);
+ PrometheusProperties.Pushgateway properties = prometheusProperties
+ .getPushgateway();
+ PushGateway pushGateway = new PushGateway(properties.getBaseUrl());
+ Duration pushRate = properties.getPushRate();
+ String job = getJob(properties, environment);
+ Map groupingKey = properties.getGroupingKey();
+ ShutdownOperation shutdownOperation = properties.getShutdownOperation();
+ return new PrometheusPushGatewayManager(pushGateway, collectorRegistry,
+ pushRate, job, groupingKey, shutdownOperation);
}
- static class PushGatewayHandler {
-
- private final Logger logger = LoggerFactory
- .getLogger(PrometheusPushGatewayConfiguration.class);
-
- private final CollectorRegistry collectorRegistry;
-
- private final PrometheusProperties.PushgatewayProperties pushgatewayProperties;
-
- private final PushGateway pushGateway;
-
- private final Environment environment;
-
- private final ScheduledExecutorService executorService;
-
- PushGatewayHandler(CollectorRegistry collectorRegistry,
- PrometheusProperties prometheusProperties, Environment environment) {
- this.collectorRegistry = collectorRegistry;
- this.pushgatewayProperties = prometheusProperties.getPushgateway();
- this.pushGateway = new PushGateway(
- this.pushgatewayProperties.getBaseUrl());
- this.environment = environment;
- this.executorService = Executors.newSingleThreadScheduledExecutor((r) -> {
- Thread thread = new Thread(r);
- thread.setDaemon(true);
- thread.setName("micrometer-pushgateway");
- return thread;
- });
- this.executorService.scheduleAtFixedRate(this::push, 0,
- this.pushgatewayProperties.getPushRate().toMillis(),
- TimeUnit.MILLISECONDS);
- }
-
- void push() {
- try {
- this.pushGateway.pushAdd(this.collectorRegistry, getJobName(),
- this.pushgatewayProperties.getGroupingKeys());
- }
- catch (UnknownHostException ex) {
- this.logger.error("Unable to locate host '"
- + this.pushgatewayProperties.getBaseUrl()
- + "'. No longer attempting metrics publication to this host");
- this.executorService.shutdown();
- }
- catch (Throwable throwable) {
- this.logger.error("Unable to push metrics to Prometheus Pushgateway",
- throwable);
- }
- }
-
- @PreDestroy
- void shutdown() {
- this.executorService.shutdown();
- if (this.pushgatewayProperties.isPushOnShutdown()) {
- push();
- }
- if (this.pushgatewayProperties.isDeleteOnShutdown()) {
- delete();
- }
- }
-
- private void delete() {
- try {
- this.pushGateway.delete(getJobName(),
- this.pushgatewayProperties.getGroupingKeys());
- }
- catch (Throwable throwable) {
- this.logger.error(
- "Unable to delete metrics from Prometheus Pushgateway",
- throwable);
- }
- }
-
- private String getJobName() {
- String job = this.pushgatewayProperties.getJob();
- if (job == null) {
- job = this.environment.getProperty("spring.application.name");
- }
- if (job == null) {
- // There's a history of Prometheus spring integration defaulting the
- // getJobName name to "spring" from when
- // Prometheus integration didn't exist in Spring itself.
- job = "spring";
- }
- return job;
- }
-
+ private String getJob(PrometheusProperties.Pushgateway properties,
+ Environment environment) {
+ String job = properties.getJob();
+ job = (job != null) ? job
+ : environment.getProperty("spring.application.name");
+ job = (job != null) ? job : FALLBACK_JOB;
+ return job;
}
}
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusProperties.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusProperties.java
index a1650e1937d..0fc7a9ccb1a 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusProperties.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusProperties.java
@@ -20,6 +20,7 @@ import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusPushGatewayManager.ShutdownOperation;
import org.springframework.boot.context.properties.ConfigurationProperties;
/**
@@ -42,7 +43,7 @@ public class PrometheusProperties {
* Configuration options for using Prometheus Pushgateway, allowing metrics to be
* pushed when they cannot be scraped.
*/
- private PushgatewayProperties pushgateway = new PushgatewayProperties();
+ private Pushgateway pushgateway = new Pushgateway();
/**
* Step size (i.e. reporting frequency) to use.
@@ -65,18 +66,18 @@ public class PrometheusProperties {
this.step = step;
}
- public PushgatewayProperties getPushgateway() {
+ public Pushgateway getPushgateway() {
return this.pushgateway;
}
- public void setPushgateway(PushgatewayProperties pushgateway) {
+ public void setPushgateway(Pushgateway pushgateway) {
this.pushgateway = pushgateway;
}
/**
* Configuration options for push-based interaction with Prometheus.
*/
- public static class PushgatewayProperties {
+ public static class Pushgateway {
/**
* Enable publishing via a Prometheus Pushgateway.
@@ -84,34 +85,29 @@ public class PrometheusProperties {
private Boolean enabled = false;
/**
- * Required host:port or ip:port of the Pushgateway.
+ * Base URL for the Pushgateway.
*/
private String baseUrl = "localhost:9091";
/**
- * Required identifier for this application instance.
- */
- private String job;
-
- /**
- * Frequency with which to push metrics to Pushgateway.
+ * Frequency with which to push metrics.
*/
private Duration pushRate = Duration.ofMinutes(1);
/**
- * Push metrics right before shut-down. Mostly useful for batch jobs.
+ * Job identifier for this application instance.
*/
- private boolean pushOnShutdown = true;
+ private String job;
/**
- * Delete metrics from Pushgateway when application is shut-down.
+ * Grouping key for the pushed metrics.
*/
- private boolean deleteOnShutdown = true;
+ private Map groupingKey = new HashMap<>();
/**
- * Used to group metrics in pushgateway. A common example is setting
+ * Operation that should be performed on shutdown.
*/
- private Map groupingKeys = new HashMap<>();
+ private ShutdownOperation shutdownOperation = ShutdownOperation.NONE;
public Boolean getEnabled() {
return this.enabled;
@@ -129,14 +125,6 @@ public class PrometheusProperties {
this.baseUrl = baseUrl;
}
- public String getJob() {
- return this.job;
- }
-
- public void setJob(String job) {
- this.job = job;
- }
-
public Duration getPushRate() {
return this.pushRate;
}
@@ -145,28 +133,28 @@ public class PrometheusProperties {
this.pushRate = pushRate;
}
- public boolean isPushOnShutdown() {
- return this.pushOnShutdown;
+ public String getJob() {
+ return this.job;
}
- public void setPushOnShutdown(boolean pushOnShutdown) {
- this.pushOnShutdown = pushOnShutdown;
+ public void setJob(String job) {
+ this.job = job;
}
- public boolean isDeleteOnShutdown() {
- return this.deleteOnShutdown;
+ public Map getGroupingKey() {
+ return this.groupingKey;
}
- public void setDeleteOnShutdown(boolean deleteOnShutdown) {
- this.deleteOnShutdown = deleteOnShutdown;
+ public void setGroupingKey(Map groupingKey) {
+ this.groupingKey = groupingKey;
}
- public Map getGroupingKeys() {
- return this.groupingKeys;
+ public ShutdownOperation getShutdownOperation() {
+ return this.shutdownOperation;
}
- public void setGroupingKeys(Map groupingKeys) {
- this.groupingKeys = groupingKeys;
+ public void setShutdownOperation(ShutdownOperation shutdownOperation) {
+ this.shutdownOperation = shutdownOperation;
}
}
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfigurationTests.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfigurationTests.java
index 56155d6739b..52f80208d80 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfigurationTests.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfigurationTests.java
@@ -22,8 +22,8 @@ import io.micrometer.prometheus.PrometheusMeterRegistry;
import io.prometheus.client.CollectorRegistry;
import org.junit.Test;
-import org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus.PrometheusMetricsExportAutoConfiguration.PrometheusPushGatewayConfiguration;
import org.springframework.boot.actuate.autoconfigure.web.server.ManagementContextAutoConfiguration;
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusPushGatewayManager;
import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusScrapeEndpoint;
import org.springframework.boot.autoconfigure.AutoConfigurations;
import org.springframework.boot.test.context.runner.ApplicationContextRunner;
@@ -137,8 +137,8 @@ public class PrometheusMetricsExportAutoConfigurationTests {
.withPropertyValues(
"management.metrics.export.prometheus.pushgateway.enabled=true")
.withUserConfiguration(BaseConfiguration.class)
- .run((context) -> assertThat(context).hasSingleBean(
- PrometheusPushGatewayConfiguration.PushGatewayHandler.class));
+ .run((context) -> assertThat(context)
+ .hasSingleBean(PrometheusPushGatewayManager.class));
}
@Configuration
diff --git a/spring-boot-project/spring-boot-actuator/pom.xml b/spring-boot-project/spring-boot-actuator/pom.xml
index ba0b2dd3419..a02ba2d1e77 100644
--- a/spring-boot-project/spring-boot-actuator/pom.xml
+++ b/spring-boot-project/spring-boot-actuator/pom.xml
@@ -1,5 +1,6 @@
-
4.0.0
@@ -61,6 +62,11 @@
micrometer-registry-prometheus
true
+
+ io.prometheus
+ simpleclient_pushgateway
+ true
+
io.reactivex
rxjava-reactive-streams
diff --git a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/export/prometheus/PrometheusPushGatewayManager.java b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/export/prometheus/PrometheusPushGatewayManager.java
new file mode 100644
index 00000000000..9e9e50b3024
--- /dev/null
+++ b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/export/prometheus/PrometheusPushGatewayManager.java
@@ -0,0 +1,201 @@
+/*
+ * Copyright 2012-2018 the original author or authors.
+ *
+ * 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.
+ */
+
+package org.springframework.boot.actuate.metrics.export.prometheus;
+
+import java.net.UnknownHostException;
+import java.time.Duration;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+
+import io.prometheus.client.CollectorRegistry;
+import io.prometheus.client.exporter.PushGateway;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.springframework.scheduling.TaskScheduler;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
+
+/**
+ * Class that can be used to managed the pushing of metrics to a {@link PushGateway
+ * Prometheus PushGateway}. Handles the scheduling of push operations, error handling and
+ * shutdown operations.
+ *
+ * @author David J. M. Karlsen
+ * @author Phillip Webb
+ * @since 2.1.0
+ */
+public class PrometheusPushGatewayManager {
+
+ private static final Logger logger = LoggerFactory
+ .getLogger(PrometheusPushGatewayManager.class);
+
+ private final PushGateway pushGateway;
+
+ private final CollectorRegistry registry;
+
+ private final String job;
+
+ private final Map groupingKey;
+
+ private final ShutdownOperation shutdownOperation;
+
+ private final TaskScheduler scheduler;
+
+ private ScheduledFuture scheduled;
+
+ /**
+ * Create a new {@link PrometheusPushGatewayManager} instance using a single threaded
+ * {@link TaskScheduler}.
+ * @param pushGateway the source push gateway
+ * @param registry the collector registry to push
+ * @param pushRate the rate at which push operations occur
+ * @param job the job ID for the operation
+ * @param groupingKeys an optional set of grouping keys for the operation
+ * @param shutdownOperation the shutdown operation that should be performed when
+ * context is closed.
+ */
+ public PrometheusPushGatewayManager(PushGateway pushGateway,
+ CollectorRegistry registry, Duration pushRate, String job,
+ Map groupingKeys, ShutdownOperation shutdownOperation) {
+ this(pushGateway, registry, new PushGatewayTaskScheduler(), pushRate, job,
+ groupingKeys, shutdownOperation);
+ }
+
+ /**
+ * Create a new {@link PrometheusPushGatewayManager} instance.
+ * @param pushGateway the source push gateway
+ * @param registry the collector registry to push
+ * @param scheduler the scheduler used for operations
+ * @param pushRate the rate at which push operations occur
+ * @param job the job ID for the operation
+ * @param groupingKey an optional set of grouping keys for the operation
+ * @param shutdownOperation the shutdown operation that should be performed when
+ * context is closed.
+ */
+ public PrometheusPushGatewayManager(PushGateway pushGateway,
+ CollectorRegistry registry, TaskScheduler scheduler, Duration pushRate,
+ String job, Map groupingKey,
+ ShutdownOperation shutdownOperation) {
+ Assert.notNull(pushGateway, "PushGateway must not be null");
+ Assert.notNull(registry, "Registry must not be null");
+ Assert.notNull(scheduler, "Scheduler must not be null");
+ Assert.notNull(pushRate, "PushRate must not be null");
+ Assert.hasLength(job, "Job must not be empty");
+ this.pushGateway = pushGateway;
+ this.registry = registry;
+ this.job = job;
+ this.groupingKey = groupingKey;
+ this.shutdownOperation = (shutdownOperation != null) ? shutdownOperation
+ : ShutdownOperation.NONE;
+ this.scheduler = scheduler;
+ this.scheduled = this.scheduler.scheduleAtFixedRate(this::push, pushRate);
+ }
+
+ private void push() {
+ try {
+ this.pushGateway.pushAdd(this.registry, this.job, this.groupingKey);
+ }
+ catch (UnknownHostException ex) {
+ String host = ex.getMessage();
+ String message = "Unable to locate prometheus push gateway host";
+ message += StringUtils.hasLength(host) ? " '" + host + "'" : "";
+ message += ". No longer attempting metrics publication to this host";
+ logger.error(message, ex);
+ shutdown(ShutdownOperation.NONE);
+ }
+ catch (Throwable ex) {
+ logger.error("Unable to push metrics to Prometheus Pushgateway", ex);
+ }
+ }
+
+ private void delete() {
+ try {
+ this.pushGateway.delete(this.job, this.groupingKey);
+ }
+ catch (Throwable ex) {
+ logger.error("Unable to delete metrics from Prometheus Pushgateway", ex);
+ }
+ }
+
+ /**
+ * Shutdown the manager, running any {@link ShutdownOperation}.
+ */
+ public void shutdown() {
+ shutdown(this.shutdownOperation);
+ }
+
+ private void shutdown(ShutdownOperation shutdownOperation) {
+ if (this.scheduler instanceof PushGatewayTaskScheduler) {
+ ((PushGatewayTaskScheduler) this.scheduler).shutdown();
+ }
+ this.scheduled.cancel(false);
+ switch (shutdownOperation) {
+ case PUSH:
+ push();
+ break;
+ case DELETE:
+ delete();
+ break;
+ }
+ }
+
+ /**
+ * The operation that should be performed on shutdown.
+ */
+ public enum ShutdownOperation {
+
+ /**
+ * Don't perform any shutdown operation.
+ */
+ NONE,
+
+ /**
+ * Perform a 'push' before shutdown.
+ */
+ PUSH,
+
+ /**
+ * Perform a 'delete' before shutdown.
+ */
+ DELETE
+
+ }
+
+ /**
+ * {@link TaskScheduler} used when the user doesn't specify one.
+ */
+ static class PushGatewayTaskScheduler extends ThreadPoolTaskScheduler {
+
+ PushGatewayTaskScheduler() {
+ setPoolSize(1);
+ setDaemon(true);
+ setThreadGroupName("prometheus-push-gateway");
+ }
+
+ @Override
+ public ScheduledExecutorService getScheduledExecutor()
+ throws IllegalStateException {
+ return Executors.newSingleThreadScheduledExecutor(this::newThread);
+ }
+
+ }
+
+}
diff --git a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/export/prometheus/PrometheusPushGatewayManagerTests.java b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/export/prometheus/PrometheusPushGatewayManagerTests.java
new file mode 100644
index 00000000000..acb382213a0
--- /dev/null
+++ b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/export/prometheus/PrometheusPushGatewayManagerTests.java
@@ -0,0 +1,215 @@
+/*
+ * Copyright 2012-2018 the original author or authors.
+ *
+ * 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.
+ */
+
+package org.springframework.boot.actuate.metrics.export.prometheus;
+
+import java.net.UnknownHostException;
+import java.time.Duration;
+import java.util.Collections;
+import java.util.Map;
+import java.util.concurrent.ScheduledFuture;
+
+import io.prometheus.client.CollectorRegistry;
+import io.prometheus.client.exporter.PushGateway;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusPushGatewayManager.PushGatewayTaskScheduler;
+import org.springframework.boot.actuate.metrics.export.prometheus.PrometheusPushGatewayManager.ShutdownOperation;
+import org.springframework.scheduling.TaskScheduler;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.ArgumentMatchers.isA;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.BDDMockito.willThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyZeroInteractions;
+
+/**
+ * Tests for {@link PrometheusPushGatewayManager}.
+ *
+ * @author Phillip Webb
+ */
+public class PrometheusPushGatewayManagerTests {
+
+ @Mock
+ private PushGateway pushGateway;
+
+ @Mock
+ private CollectorRegistry registry;
+
+ private TaskScheduler scheduler;
+
+ private Duration pushRate = Duration.ofSeconds(1);
+
+ private Map groupingKey = Collections.singletonMap("foo", "bar");
+
+ @Captor
+ private ArgumentCaptor task;
+
+ @Mock
+ private ScheduledFuture