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/*
* Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2022, 2024 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import jdk.test.lib.process.OutputAnalyzer;
import java.io.*;
import java.util.*;
import java.util.regex.Pattern;
public class HsErrFileUtils {
/**
* Given the output of a java VM that crashed, extract the name of the hs-err file from the output
*/
public static String extractHsErrFileNameFromOutput(OutputAnalyzer output) {
output.shouldMatch("# A fatal error has been detected.*");
// extract hs-err file
String hs_err_file = output.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1);
if (hs_err_file == null) {
throw new RuntimeException("Did not find hs-err file in output.\n");
}
return hs_err_file;
}
/**
* Given the output of a java VM that crashed, extract the name of the hs-err file from the output,
* open that file and return its File.
*/
public static File openHsErrFileFromOutput(OutputAnalyzer output) {
String name = extractHsErrFileNameFromOutput(output);
File f = new File(name);
if (!f.exists()) {
throw new RuntimeException("Cannot find hs-err file at " + f.getAbsolutePath());
}
return f;
}
/**
* Given an open hs-err file, read it line by line and check for existence of a set of patterns. Will fail
* if patterns are missing, or if the END marker is missing.
* @param f Input file
* @param patterns An array of patterns that need to match, in that order
* @param verbose If true, the content of the hs-err file is printed while matching. If false, only the matched patterns
* are printed.
* @throws RuntimeException, {@link IOException}
*/
public static void checkHsErrFileContent(File f, Pattern[] patterns, boolean verbose) throws IOException {
checkHsErrFileContent(f, patterns, null, true, verbose, false);
}
/**
* Given an open hs-err file, read it line by line and check for various conditions.
* @param f input file
* @param positivePatterns Optional array of patterns that need to appear, in given order, in the file. Missing
* patterns cause the test to fail.
* @param negativePatterns Optional array of patterns that must not appear in the file; test fails if they do.
* Order is irrelevant.
* @param checkEndMarker If true, we check for the final "END" in an hs-err file; if it is missing it indicates
* that hs-err file printing did not complete successfully.
* @param verbose If true, the content of the hs-err file is printed while matching. If false, only the matched patterns
* are printed.
* @throws RuntimeException, {@link IOException}
*/
public static void checkHsErrFileContent(File f, Pattern[] positivePatterns, Pattern[] negativePatterns, boolean checkEndMarker, boolean verbose) throws IOException {
checkHsErrFileContent(f, positivePatterns, negativePatterns, checkEndMarker, verbose, false);
}
/**
* Given an open hs-err file, read it line by line and check for existence of a set of patterns. Will fail
* if patterns are missing, or if the END marker is missing.
* @param f Input file
* @param patterns An array of patterns that need to match, in that order
* @param verbose If true, the content of the hs-err file is printed while matching. If false, only the matched patterns
* are printed.
* @param printHserrOnError If true, the content of the hs-err file is printed in case of a failing check
* @throws RuntimeException, {@link IOException}
*/
public static void checkHsErrFileContent(File f, Pattern[] patterns, boolean verbose, boolean printHserrOnError) throws IOException {
checkHsErrFileContent(f, patterns, null, true, verbose, printHserrOnError);
}
/**
* Given an open hs-err file, read it line by line and check for various conditions.
* @param f input file
* @param positivePatterns Optional array of patterns that need to appear, in given order, in the file. Missing
* patterns cause the test to fail.
* @param negativePatterns Optional array of patterns that must not appear in the file; test fails if they do.
* Order is irrelevant.
* @param checkEndMarker If true, we check for the final "END" in an hs-err file; if it is missing it indicates
* that hs-err file printing did not complete successfully.
* @param verbose If true, the content of the hs-err file is printed while matching. If false, only the matched patterns
* are printed.
* @param printHserrOnError If true, the content of the hs-err file is printed in case of a failing check
* @throws RuntimeException, {@link IOException}
*/
public static void checkHsErrFileContent(File f, Pattern[] positivePatterns, Pattern[] negativePatterns, boolean checkEndMarker, boolean verbose, boolean printHserrOnError) throws IOException {
try (
FileInputStream fis = new FileInputStream(f);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
) {
String line = null;
String lastLine = null;
int lineNo = 0;
Deque<Pattern> positivePatternStack = new ArrayDeque<Pattern>();
if (positivePatterns != null) {
Collections.addAll(positivePatternStack, positivePatterns);
}
Pattern currentPositivePattern = positivePatternStack.pollFirst();
while ((line = br.readLine()) != null) {
if (verbose) {
System.out.println(line);
}
if (currentPositivePattern != null) {
if (currentPositivePattern.matcher(line).matches()) {
if (!verbose) {
System.out.println(line);
}
System.out.println("^^^ Matches " + currentPositivePattern + " at line " + lineNo + "^^^");
currentPositivePattern = positivePatternStack.pollFirst();
if (currentPositivePattern == null && negativePatterns == null && checkEndMarker == false) {
System.out.println("Lazily skipping the rest of the hs-err file...");
break; // Shortcut. Nothing to do.
}
}
}
if (negativePatterns != null) {
for (Pattern negativePattern : negativePatterns) {
if (negativePattern.matcher(line).matches()) {
if (!verbose) {
System.out.println(line);
}
System.out.println("^^^ Forbidden pattern found at line " + lineNo + ": " + negativePattern + "^^^");
if (printHserrOnError) {
printHsErrFile(f);
}
throw new RuntimeException("Forbidden pattern found at line " + lineNo + ": " + negativePattern);
}
}
}
lastLine = line;
lineNo++;
}
// If the current pattern is not null then it didn't match
if (currentPositivePattern != null) {
if (printHserrOnError) {
printHsErrFile(f);
}
throw new RuntimeException("hs-err file incomplete (first missing pattern: " + currentPositivePattern.pattern() + ")");
}
if (checkEndMarker && !lastLine.equals("END.")) {
if (printHserrOnError) {
printHsErrFile(f);
}
throw new RuntimeException("hs-err file incomplete (missing END marker.)");
}
System.out.println("hs-err file " + f.getAbsolutePath() + " scanned successfully.");
}
}
private static void printHsErrFile(File f) throws IOException {
try (
FileInputStream fis = new FileInputStream(f);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
) {
String line;
System.out.println("------------------------ hs-err file ------------------------");
while ((line = br.readLine()) != null) {
System.out.println(line);
}
System.out.println("-------------------------------------------------------------");
}
}
}
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