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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.task.util.process;
import com.yahoo.text.internal.SnippetGenerator;
/**
* Base class for child process related exceptions, with a util to build an error message
* that includes a large part of the output.
*
* @author hakonhall
*/
@SuppressWarnings("serial")
public abstract class ChildProcessException extends RuntimeException {
private static final SnippetGenerator snippetGenerator = new SnippetGenerator();
/**
* An exception with a message of the following format:
* Command 'COMMANDLINE' PROBLEM: stdout/stderr: 'OUTPUT'
*
* If the output of the terminated command is too large it will be sampled.
*
* @param problem E.g. "terminated with exit code 1"
* @param commandLine The command that failed in a concise (e.g. shell-like) format
* @param possiblyHugeOutput The output of the command
*/
protected ChildProcessException(String problem, String commandLine, String possiblyHugeOutput) {
super(makeSnippet(problem, commandLine, possiblyHugeOutput));
}
protected ChildProcessException(RuntimeException cause,
String problem,
String commandLine,
String possiblyHugeOutput) {
super(makeSnippet(problem, commandLine, possiblyHugeOutput), cause);
}
private static String makeSnippet(String problem, String commandLine, String possiblyHugeOutput) {
return "Command '" +
commandLine +
"' " +
problem +
": stdout/stderr: '" +
snippetGenerator.makeSnippet(possiblyHugeOutput, 500) +
"'";
}
}
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