spring DockerConnectionException 源码
springboot DockerConnectionException 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/docker/transport/DockerConnectionException.java
/*
* Copyright 2012-2020 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.buildpack.platform.docker.transport;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Exception thrown when connection to the Docker daemon fails.
*
* @author Scott Frederick
* @since 2.3.0
*/
public class DockerConnectionException extends RuntimeException {
private static final String JNA_EXCEPTION_CLASS_NAME = "com.sun.jna.LastErrorException";
public DockerConnectionException(String host, Exception cause) {
super(buildMessage(host, cause), cause);
}
private static String buildMessage(String host, Exception cause) {
Assert.notNull(host, "Host must not be null");
Assert.notNull(cause, "Cause must not be null");
StringBuilder message = new StringBuilder("Connection to the Docker daemon at '" + host + "' failed");
String causeMessage = getCauseMessage(cause);
if (StringUtils.hasText(causeMessage)) {
message.append(" with error \"").append(causeMessage).append("\"");
}
message.append("; ensure the Docker daemon is running and accessible");
return message.toString();
}
private static String getCauseMessage(Exception cause) {
if (cause.getCause() != null && cause.getCause().getClass().getName().equals(JNA_EXCEPTION_CLASS_NAME)) {
return cause.getCause().getMessage();
}
return cause.getMessage();
}
}
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- 所属分类： 后端技术
- 本文标签： Spring Boot Java Spring
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