106 lines
3.8 KiB
Java
106 lines
3.8 KiB
Java
/*
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* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2022 SAP SE. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import java.io.*;
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import java.util.regex.Pattern;
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public class HsErrFileUtils {
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/**
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* Given the output of a java VM that crashed, extract the name of the hs-err file from the output
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*/
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public static String extractHsErrFileNameFromOutput(OutputAnalyzer output) {
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output.shouldMatch("# A fatal error has been detected.*");
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// extract hs-err file
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String hs_err_file = output.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1);
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if (hs_err_file == null) {
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throw new RuntimeException("Did not find hs-err file in output.\n");
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}
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return hs_err_file;
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}
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/**
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* Given the output of a java VM that crashed, extract the name of the hs-err file from the output,
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* open that file and return its File.
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* @param output
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* @return
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*/
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public static File openHsErrFileFromOutput(OutputAnalyzer output) {
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String name = extractHsErrFileNameFromOutput(output);
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File f = new File(name);
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if (!f.exists()) {
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throw new RuntimeException("Cannot find hs-err file at " + f.getAbsolutePath());
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}
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return f;
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}
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/**
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* Given an open hs-err file, read it line by line and check for pattern. Pattern
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* need to appear in order, but not necessarily uninterrupted.
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*/
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public static void checkHsErrFileContent(File f, Pattern[] patterns, boolean verbose) throws IOException {
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FileInputStream fis = new FileInputStream(f);
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BufferedReader br = new BufferedReader(new InputStreamReader(fis));
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String line = null;
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int currentPattern = 0;
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String lastLine = null;
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while ((line = br.readLine()) != null) {
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if (verbose) {
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System.out.println(line);
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}
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if (currentPattern < patterns.length) {
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if (patterns[currentPattern].matcher(line).matches()) {
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if (!verbose) {
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System.out.println(line);
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}
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System.out.println("^^^ Match " + currentPattern + ": matches " + patterns[currentPattern] + "^^^");
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currentPattern ++;
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}
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}
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lastLine = line;
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}
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br.close();
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if (currentPattern < patterns.length) {
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throw new RuntimeException("hs-err file incomplete (found " + currentPattern + " matching pattern, " +
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"first missing pattern: " + patterns[currentPattern] + ")");
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}
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if (!lastLine.equals("END.")) {
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throw new RuntimeException("hs-err file incomplete (missing END marker.)");
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}
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System.out.println("Found all expected pattern in hs-err file at " + f.getAbsolutePath());
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}
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}
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