org.springframework.boot.autoconfigure.condition.OnJavaCondition Maven / Gradle / Ivy
/*
* Copyright 2012-2014 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.autoconfigure.condition;
import java.util.Map;
import org.springframework.boot.autoconfigure.condition.ConditionalOnJava.JavaVersion;
import org.springframework.boot.autoconfigure.condition.ConditionalOnJava.Range;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.core.type.AnnotatedTypeMetadata;
/**
* {@link Condition} that checks for a required version of Java.
*
* @author Oliver Gierke
* @author Phillip Webb
* @see ConditionalOnJava
* @since 1.1.0
*/
@Order(Ordered.HIGHEST_PRECEDENCE + 20)
class OnJavaCondition extends SpringBootCondition {
private static final JavaVersion JVM_VERSION = JavaVersion.getJavaVersion();
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context,
AnnotatedTypeMetadata metadata) {
Map attributes = metadata
.getAnnotationAttributes(ConditionalOnJava.class.getName());
Range range = (Range) attributes.get("range");
JavaVersion version = (JavaVersion) attributes.get("value");
return getMatchOutcome(range, JVM_VERSION, version);
}
protected ConditionOutcome getMatchOutcome(Range range, JavaVersion runningVersion,
JavaVersion version) {
boolean match = runningVersion.isWithin(range, version);
return new ConditionOutcome(match, getMessage(range, runningVersion, version));
}
private String getMessage(Range range, JavaVersion runningVersion,
JavaVersion version) {
String expected = String.format(
range == Range.EQUAL_OR_NEWER ? "%s or newer" : "older than %s", version);
return "Required JVM version " + expected + " found " + runningVersion;
}
}