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Spring Boot Actuator AutoConfigure
/*
* Copyright 2012-2019 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
*
* https://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.autoconfigure.condition;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
import org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport;
import org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport.ConditionAndOutcome;
import org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport.ConditionAndOutcomes;
import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Condition;
import org.springframework.util.ClassUtils;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.util.StringUtils;
/**
* {@link Endpoint @Endpoint} to expose the {@link ConditionEvaluationReport}.
*
* @author Greg Turnquist
* @author Phillip Webb
* @author Dave Syer
* @author Andy Wilkinson
* @since 2.0.0
*/
@Endpoint(id = "conditions")
public class ConditionsReportEndpoint {
private final ConfigurableApplicationContext context;
public ConditionsReportEndpoint(ConfigurableApplicationContext context) {
this.context = context;
}
@ReadOperation
public ApplicationConditionEvaluation applicationConditionEvaluation() {
Map contextConditionEvaluations = new HashMap<>();
ConfigurableApplicationContext target = this.context;
while (target != null) {
contextConditionEvaluations.put(target.getId(), new ContextConditionEvaluation(target));
target = getConfigurableParent(target);
}
return new ApplicationConditionEvaluation(contextConditionEvaluations);
}
private ConfigurableApplicationContext getConfigurableParent(ConfigurableApplicationContext context) {
ApplicationContext parent = context.getParent();
if (parent instanceof ConfigurableApplicationContext) {
return (ConfigurableApplicationContext) parent;
}
return null;
}
/**
* A description of an application's condition evaluation, primarily intended for
* serialization to JSON.
*/
public static final class ApplicationConditionEvaluation {
private final Map contexts;
private ApplicationConditionEvaluation(Map contexts) {
this.contexts = contexts;
}
public Map getContexts() {
return this.contexts;
}
}
/**
* A description of an application context's condition evaluation, primarily intended
* for serialization to JSON.
*/
@JsonInclude(Include.NON_EMPTY)
public static final class ContextConditionEvaluation {
private final MultiValueMap positiveMatches;
private final Map negativeMatches;
private final List exclusions;
private final Set unconditionalClasses;
private final String parentId;
public ContextConditionEvaluation(ConfigurableApplicationContext context) {
ConditionEvaluationReport report = ConditionEvaluationReport.get(context.getBeanFactory());
this.positiveMatches = new LinkedMultiValueMap<>();
this.negativeMatches = new LinkedHashMap<>();
this.exclusions = report.getExclusions();
this.unconditionalClasses = report.getUnconditionalClasses();
report.getConditionAndOutcomesBySource().forEach(this::add);
this.parentId = (context.getParent() != null) ? context.getParent().getId() : null;
}
private void add(String source, ConditionAndOutcomes conditionAndOutcomes) {
String name = ClassUtils.getShortName(source);
if (conditionAndOutcomes.isFullMatch()) {
conditionAndOutcomes.forEach((conditionAndOutcome) -> this.positiveMatches.add(name,
new MessageAndCondition(conditionAndOutcome)));
}
else {
this.negativeMatches.put(name, new MessageAndConditions(conditionAndOutcomes));
}
}
public Map> getPositiveMatches() {
return this.positiveMatches;
}
public Map getNegativeMatches() {
return this.negativeMatches;
}
public List getExclusions() {
return this.exclusions;
}
public Set getUnconditionalClasses() {
return this.unconditionalClasses;
}
public String getParentId() {
return this.parentId;
}
}
/**
* Adapts {@link ConditionAndOutcomes} to a JSON friendly structure.
*/
@JsonPropertyOrder({ "notMatched", "matched" })
public static class MessageAndConditions {
private final List notMatched = new ArrayList<>();
private final List matched = new ArrayList<>();
public MessageAndConditions(ConditionAndOutcomes conditionAndOutcomes) {
for (ConditionAndOutcome conditionAndOutcome : conditionAndOutcomes) {
List target = (conditionAndOutcome.getOutcome().isMatch() ? this.matched
: this.notMatched);
target.add(new MessageAndCondition(conditionAndOutcome));
}
}
public List getNotMatched() {
return this.notMatched;
}
public List getMatched() {
return this.matched;
}
}
/**
* Adapts {@link ConditionAndOutcome} to a JSON friendly structure.
*/
@JsonPropertyOrder({ "condition", "message" })
public static class MessageAndCondition {
private final String condition;
private final String message;
public MessageAndCondition(ConditionAndOutcome conditionAndOutcome) {
Condition condition = conditionAndOutcome.getCondition();
ConditionOutcome outcome = conditionAndOutcome.getOutcome();
this.condition = ClassUtils.getShortName(condition.getClass());
if (StringUtils.hasLength(outcome.getMessage())) {
this.message = outcome.getMessage();
}
else {
this.message = outcome.isMatch() ? "matched" : "did not match";
}
}
public String getCondition() {
return this.condition;
}
public String getMessage() {
return this.message;
}
}
}