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This commit introduces HealthIndicatorRegistry which handles registration of HealthIndicator instances. Registering new HealthIndicator instances is now possible in runtime.
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69 changes: 69 additions & 0 deletions
69
...src/main/java/org/springframework/boot/actuate/health/DefaultHealthIndicatorRegistry.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| * Copyright 2012-2016 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. | ||
| */ | ||
|
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| package org.springframework.boot.actuate.health; | ||
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| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| import org.springframework.util.Assert; | ||
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| /** | ||
| * Default implementation of {@link HealthIndicatorRegistry}. | ||
| * | ||
| * @author Vedran Pavic | ||
| */ | ||
| public class DefaultHealthIndicatorRegistry implements HealthIndicatorRegistry { | ||
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| private final Map<String, HealthIndicator> healthIndicators = | ||
| new HashMap<String, HealthIndicator>(); | ||
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| @Override | ||
| public void register(String name, HealthIndicator healthIndicator) { | ||
| Assert.notNull(healthIndicator, "HealthIndicator must not be null"); | ||
| synchronized (this.healthIndicators) { | ||
| if (this.healthIndicators.get(name) != null) { | ||
| throw new IllegalStateException( | ||
| "HealthIndicator with name '" + name + "' already registered"); | ||
| } | ||
| this.healthIndicators.put(name, healthIndicator); | ||
| } | ||
| } | ||
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| @Override | ||
| public HealthIndicator unregister(String name) { | ||
| synchronized (this.healthIndicators) { | ||
| return this.healthIndicators.remove(name); | ||
| } | ||
| } | ||
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| @Override | ||
| public HealthIndicator get(String name) { | ||
| synchronized (this.healthIndicators) { | ||
| return this.healthIndicators.get(name); | ||
| } | ||
| } | ||
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| @Override | ||
| public Map<String, HealthIndicator> getAll() { | ||
| synchronized (this.healthIndicators) { | ||
| return Collections.unmodifiableMap( | ||
| new HashMap<String, HealthIndicator>(this.healthIndicators)); | ||
| } | ||
| } | ||
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| } |
65 changes: 65 additions & 0 deletions
65
...tuator/src/main/java/org/springframework/boot/actuate/health/HealthIndicatorRegistry.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| * Copyright 2012-2016 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. | ||
| */ | ||
|
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| package org.springframework.boot.actuate.health; | ||
|
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| import java.util.Map; | ||
|
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| /** | ||
| * A registry of {@link HealthIndicator}s. | ||
| * <p> | ||
| * Implementations <strong>must</strong> be thread-safe. | ||
| * | ||
| * @author Andy Wilkinson | ||
| * @author Vedran Pavic | ||
| */ | ||
| public interface HealthIndicatorRegistry { | ||
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| /** | ||
| * Registers the given {@code healthIndicator}, associating it with the given | ||
| * {@code name}. | ||
| * @param name the name of the indicator | ||
| * @param healthIndicator the indicator | ||
| * @throws IllegalStateException if an indicator with the given {@code name} is | ||
| * already registered. | ||
| */ | ||
| void register(String name, HealthIndicator healthIndicator); | ||
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| /** | ||
| * Unregisters the {@code HealthIndicator} previously registered with the given | ||
| * {@code name}. | ||
| * @param name the name of the indicator | ||
| * @return the unregistered indicator, or {@code null} if no indicator was found in | ||
| * the registry for the given {@code name}. | ||
| */ | ||
| HealthIndicator unregister(String name); | ||
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| /** | ||
| * Returns the health indicator registered with the given {@code name}. | ||
| * @param name the name of the indicator | ||
| * @return the health indicator, or {@code null} if no indicator was registered with | ||
| * the given {@code name}. | ||
| */ | ||
| HealthIndicator get(String name); | ||
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| /** | ||
| * Returns a snapshot of the registered health indicators and their names. The | ||
| * contents of the map do not reflect subsequent changes to the registry. | ||
| * @return the snapshot of registered health indicators | ||
| */ | ||
| Map<String, HealthIndicator> getAll(); | ||
|
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| } |
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