spring LiquibaseChangelogMissingFailureAnalyzer 源码

2022-08-12
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springboot LiquibaseChangelogMissingFailureAnalyzer 代码

文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/liquibase/LiquibaseChangelogMissingFailureAnalyzer.java

/*
 * Copyright 2012-2021 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.liquibase;

import liquibase.exception.ChangeLogParseException;

import org.springframework.boot.diagnostics.AbstractFailureAnalyzer;
import org.springframework.boot.diagnostics.FailureAnalysis;

/**
 * An {@link AbstractFailureAnalyzer} that analyzes exceptions of type
 * {@link ChangeLogParseException} caused by a Liquibase changelog not being present.
 *
 * @author Sebastiaan Fernandez
 */
class LiquibaseChangelogMissingFailureAnalyzer extends AbstractFailureAnalyzer<ChangeLogParseException> {

	private static final String MESSAGE_SUFFIX = " does not exist";

	@Override
	protected FailureAnalysis analyze(Throwable rootFailure, ChangeLogParseException cause) {
		if (cause.getMessage().endsWith(MESSAGE_SUFFIX)) {
			String changelogPath = extractChangelogPath(cause);
			return new FailureAnalysis(getDescription(changelogPath),
					"Make sure a Liquibase changelog is present at the configured path.", cause);
		}
		return null;
	}

	private String extractChangelogPath(ChangeLogParseException cause) {
		return cause.getMessage().substring(0, cause.getMessage().length() - MESSAGE_SUFFIX.length());
	}

	private String getDescription(String changelogPath) {
		return "Liquibase failed to start because no changelog could be found at '" + changelogPath + "'.";
	}

}

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本文标签： Spring Boot Java Spring
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