HADOOP-10775. Shell operations to fail with meaningful errors on windows if winutils.exe not found. (stevel)

This commit is contained in:
Steve Loughran 2015-10-13 21:29:50 +01:00
parent eb50c4f7a2
commit c59af2fdf8
19 changed files with 930 additions and 398 deletions

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@ -885,6 +885,9 @@ Release 2.8.0 - UNRELEASED
HADOOP-12344. Improve validateSocketPathSecurity0 error message (Casey
Brotherton via Colin P. McCabe)
HADOOP-10775. Shell operations to fail with meaningful errors on windows if
winutils.exe not found. (stevel)
OPTIMIZATIONS
HADOOP-11785. Reduce the number of listStatus operation in distcp

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@ -784,35 +784,6 @@ public static int symLink(String target, String linkname) throws IOException{
File linkFile = new File(
Path.getPathWithoutSchemeAndAuthority(new Path(linkname)).toString());
// If not on Java7+, copy a file instead of creating a symlink since
// Java6 has close to no support for symlinks on Windows. Specifically
// File#length and File#renameTo do not work as expected.
// (see HADOOP-9061 for additional details)
// We still create symlinks for directories, since the scenario in this
// case is different. The directory content could change in which
// case the symlink loses its purpose (for example task attempt log folder
// is symlinked under userlogs and userlogs are generated afterwards).
if (Shell.WINDOWS && !Shell.isJava7OrAbove() && targetFile.isFile()) {
try {
LOG.warn("FileUtil#symlink: On Windows+Java6, copying file instead " +
"of creating a symlink. Copying " + target + " -> " + linkname);
if (!linkFile.getParentFile().exists()) {
LOG.warn("Parent directory " + linkFile.getParent() +
" does not exist.");
return 1;
} else {
org.apache.commons.io.FileUtils.copyFile(targetFile, linkFile);
}
} catch (IOException ex) {
LOG.warn("FileUtil#symlink failed to copy the file with error: "
+ ex.getMessage());
// Exit with non-zero exit code
return 1;
}
return 0;
}
String[] cmd = Shell.getSymlinkCommand(
targetFile.toString(),
linkFile.toString());

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@ -122,6 +122,12 @@ String[] linkCount(File file)
@VisibleForTesting
static class HardLinkCGWin extends HardLinkCommandGetter {
/**
* Build the windows link command. This must not
* use an exception-raising reference to WINUTILS, as
* some tests examine the command.
*/
@SuppressWarnings("deprecation")
static String[] getLinkCountCommand = {
Shell.WINUTILS, "hardlink", "stat", null};
@ -130,6 +136,8 @@ static class HardLinkCGWin extends HardLinkCommandGetter {
*/
@Override
String[] linkCount(File file) throws IOException {
// trigger the check for winutils
Shell.getWinutilsFile();
String[] buf = new String[getLinkCountCommand.length];
System.arraycopy(getLinkCountCommand, 0, buf, 0,
getLinkCountCommand.length);

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@ -75,7 +75,7 @@ public static Type valueOf(int id) {
* is chosen depending on the platform.
*/
public static Checksum newCrc32() {
return Shell.isJava7OrAbove()? new CRC32(): new PureJavaCrc32();
return new CRC32();
}
public static DataChecksum newDataChecksum(Type type, int bytesPerChecksum ) {

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@ -18,7 +18,6 @@
package org.apache.hadoop.util;
import org.apache.hadoop.util.NativeCodeLoader;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.crypto.OpensslCipher;
import org.apache.hadoop.io.compress.Lz4Codec;
@ -27,10 +26,17 @@
import org.apache.hadoop.io.compress.zlib.ZlibFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class NativeLibraryChecker {
public static final Logger LOG =
LoggerFactory.getLogger(NativeLibraryChecker.class);
/**
* A tool to test native library availability,
*/
@ -99,12 +105,17 @@ public static void main(String[] args) {
}
}
// winutils.exe is required on Windows
winutilsPath = Shell.getWinUtilsPath();
if (winutilsPath != null) {
winutilsExists = true;
} else {
winutilsPath = "";
if (Shell.WINDOWS) {
// winutils.exe is required on Windows
try {
winutilsPath = Shell.getWinutilsFile().getCanonicalPath();
winutilsExists = true;
} catch (IOException e) {
LOG.debug("No Winutils: ", e);
winutilsPath = e.getMessage();
winutilsExists = false;
}
System.out.printf("winutils: %b %s%n", winutilsExists, winutilsPath);
}
System.out.println("Native library checking:");

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@ -70,9 +70,10 @@ void reset() {
}
String getSystemInfoInfoFromShell() {
ShellCommandExecutor shellExecutor = new ShellCommandExecutor(
new String[] {Shell.WINUTILS, "systeminfo" });
try {
ShellCommandExecutor shellExecutor = new ShellCommandExecutor(
new String[] {Shell.getWinutilsFile().getCanonicalPath(),
"systeminfo" });
shellExecutor.execute();
return shellExecutor.getOutput();
} catch (IOException e) {

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@ -52,13 +52,6 @@ public abstract class SymlinkBaseTest {
abstract protected String testBaseDir2() throws IOException;
abstract protected URI testURI();
// Returns true if the filesystem is emulating symlink support. Certain
// checks will be bypassed if that is the case.
//
protected boolean emulatingSymlinksOnWindows() {
return false;
}
protected IOException unwrapException(IOException e) {
return e;
}
@ -235,7 +228,6 @@ public void testOpenResolvesLinks() throws IOException {
@Test(timeout=10000)
/** Stat a link to a file */
public void testStatLinkToFile() throws IOException {
assumeTrue(!emulatingSymlinksOnWindows());
Path file = new Path(testBaseDir1()+"/file");
Path linkToFile = new Path(testBaseDir1()+"/linkToFile");
createAndWriteFile(file);
@ -362,11 +354,6 @@ public void testRecursiveLinks() throws IOException {
private void checkLink(Path linkAbs, Path expectedTarget, Path targetQual)
throws IOException {
// If we are emulating symlinks then many of these checks will fail
// so we skip them.
//
assumeTrue(!emulatingSymlinksOnWindows());
Path dir = new Path(testBaseDir1());
// isFile/Directory
assertTrue(wrapper.isFile(linkAbs));
@ -663,7 +650,6 @@ public void testCreateDirViaSymlink() throws IOException {
@Test(timeout=10000)
/** Create symlink through a symlink */
public void testCreateLinkViaLink() throws IOException {
assumeTrue(!emulatingSymlinksOnWindows());
Path dir1 = new Path(testBaseDir1());
Path file = new Path(testBaseDir1(), "file");
Path linkToDir = new Path(testBaseDir2(), "linkToDir");
@ -706,7 +692,6 @@ public void testListStatusUsingLink() throws IOException {
@Test(timeout=10000)
/** Test create symlink using the same path */
public void testCreateLinkTwice() throws IOException {
assumeTrue(!emulatingSymlinksOnWindows());
Path file = new Path(testBaseDir1(), "file");
Path link = new Path(testBaseDir1(), "linkToFile");
createAndWriteFile(file);
@ -895,8 +880,7 @@ public void testRenameSymlinkViaSymlink() throws IOException {
assertFalse(wrapper.exists(linkViaLink));
// Check that we didn't rename the link target
assertTrue(wrapper.exists(file));
assertTrue(wrapper.getFileLinkStatus(linkNewViaLink).isSymlink() ||
emulatingSymlinksOnWindows());
assertTrue(wrapper.getFileLinkStatus(linkNewViaLink).isSymlink());
readFile(linkNewViaLink);
}
@ -1034,8 +1018,7 @@ public void testRenameSymlinkNonExistantDest() throws IOException {
createAndWriteFile(file);
wrapper.createSymlink(file, link1, false);
wrapper.rename(link1, link2);
assertTrue(wrapper.getFileLinkStatus(link2).isSymlink() ||
emulatingSymlinksOnWindows());
assertTrue(wrapper.getFileLinkStatus(link2).isSymlink());
readFile(link2);
readFile(file);
assertFalse(wrapper.exists(link1));
@ -1059,11 +1042,8 @@ public void testRenameSymlinkToExistingFile() throws IOException {
}
wrapper.rename(link, file1, Rename.OVERWRITE);
assertFalse(wrapper.exists(link));
if (!emulatingSymlinksOnWindows()) {
assertTrue(wrapper.getFileLinkStatus(file1).isSymlink());
assertEquals(file2, wrapper.getLinkTarget(file1));
}
assertTrue(wrapper.getFileLinkStatus(file1).isSymlink());
assertEquals(file2, wrapper.getLinkTarget(file1));
}
@Test(timeout=10000)
@ -1125,7 +1105,6 @@ public void testRenameSymlinkToItself() throws IOException {
@Test(timeout=10000)
/** Rename a symlink */
public void testRenameSymlink() throws IOException {
assumeTrue(!emulatingSymlinksOnWindows());
Path file = new Path(testBaseDir1(), "file");
Path link1 = new Path(testBaseDir1(), "linkToFile1");
Path link2 = new Path(testBaseDir1(), "linkToFile2");
@ -1223,7 +1202,6 @@ public void testRenameSymlinkToDirItLinksTo() throws IOException {
@Test(timeout=10000)
/** Test rename the symlink's target */
public void testRenameLinkTarget() throws IOException {
assumeTrue(!emulatingSymlinksOnWindows());
Path file = new Path(testBaseDir1(), "file");
Path fileNew = new Path(testBaseDir1(), "fileNew");
Path link = new Path(testBaseDir1(), "linkToFile");

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@ -983,13 +983,7 @@ public void testSymlinkLength() throws Exception {
file.delete();
Assert.assertFalse(file.exists());
if (Shell.WINDOWS && !Shell.isJava7OrAbove()) {
// On Java6 on Windows, we copied the file
Assert.assertEquals(data.length, link.length());
} else {
// Otherwise, the target file size is zero
Assert.assertEquals(0, link.length());
}
Assert.assertEquals(0, link.length());
link.delete();
Assert.assertFalse(link.exists());

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@ -68,16 +68,6 @@ protected URI testURI() {
}
}
@Override
protected boolean emulatingSymlinksOnWindows() {
// Java 6 on Windows has very poor symlink support. Specifically
// Specifically File#length and File#renameTo do not work as expected.
// (see HADOOP-9061 for additional details)
// Hence some symlink tests will be skipped.
//
return (Shell.WINDOWS && !Shell.isJava7OrAbove());
}
@Override
public void testCreateDanglingLink() throws IOException {
// Dangling symlinks are not supported on Windows local file system.
@ -186,7 +176,6 @@ public void testDanglingLink() throws IOException {
* file scheme (eg file://host/tmp/test).
*/
public void testGetLinkStatusPartQualTarget() throws IOException {
assumeTrue(!emulatingSymlinksOnWindows());
Path fileAbs = new Path(testBaseDir1()+"/file");
Path fileQual = new Path(testURI().toString(), fileAbs);
Path dir = new Path(testBaseDir1());

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@ -218,7 +218,8 @@ public void testGetServerSideGroups() throws IOException,
}
// get the groups
pp = Runtime.getRuntime().exec(Shell.WINDOWS ?
Shell.WINUTILS + " groups -F" : "id -Gn");
Shell.getWinutilsPath() + " groups -F"
: "id -Gn");
br = new BufferedReader(new InputStreamReader(pp.getInputStream()));
String line = br.readLine();

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@ -17,11 +17,12 @@
*/
package org.apache.hadoop.util;
import junit.framework.TestCase;
import org.apache.commons.io.FileUtils;
import org.junit.Assert;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
@ -30,8 +31,31 @@
import java.lang.management.ThreadMXBean;
import org.apache.hadoop.fs.FileUtil;
import static org.apache.hadoop.util.Shell.*;
import org.junit.Assume;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;
import org.junit.rules.Timeout;
public class TestShell extends TestCase {
public class TestShell extends Assert {
/**
* Set the timeout for every test
*/
@Rule
public Timeout testTimeout = new Timeout(30000);
@Rule
public TestName methodName = new TestName();
private File rootTestDir = new File(System.getProperty("test.build.data", "target/"));
/**
* A filename generated uniquely for each test method. The file
* itself is neither created nor deleted during test setup/teardown.
*/
private File methodDir;
private static class Command extends Shell {
private int runCount = 0;
@ -45,7 +69,7 @@ protected String[] getExecString() {
// There is no /bin/echo equivalent on Windows so just launch it as a
// shell built-in.
//
return Shell.WINDOWS ?
return WINDOWS ?
(new String[] {"cmd.exe", "/c", "echo", "hello"}) :
(new String[] {"echo", "hello"});
}
@ -60,6 +84,14 @@ public int getRunCount() {
}
}
@Before
public void setup() {
rootTestDir.mkdirs();
assertTrue("Not a directory " + rootTestDir, rootTestDir.isDirectory());
methodDir = new File(rootTestDir, methodName.getMethodName());
}
@Test
public void testInterval() throws IOException {
testInterval(Long.MIN_VALUE / 60000); // test a negative interval
testInterval(0L); // test a zero interval
@ -79,6 +111,7 @@ private void assertInString(String string, String search) {
}
}
@Test
public void testShellCommandExecutorToString() throws Throwable {
Shell.ShellCommandExecutor sce=new Shell.ShellCommandExecutor(
new String[] { "ls", "..","arg 2"});
@ -87,30 +120,28 @@ public void testShellCommandExecutorToString() throws Throwable {
assertInString(command, " .. ");
assertInString(command, "\"arg 2\"");
}
@Test
public void testShellCommandTimeout() throws Throwable {
if(Shell.WINDOWS) {
// setExecutable does not work on Windows
return;
}
String rootDir = new File(System.getProperty(
"test.build.data", "/tmp")).getAbsolutePath();
Assume.assumeFalse(WINDOWS);
String rootDir = rootTestDir.getAbsolutePath();
File shellFile = new File(rootDir, "timeout.sh");
String timeoutCommand = "sleep 4; echo \"hello\"";
PrintWriter writer = new PrintWriter(new FileOutputStream(shellFile));
writer.println(timeoutCommand);
writer.close();
Shell.ShellCommandExecutor shexc;
try (PrintWriter writer = new PrintWriter(new FileOutputStream(shellFile))) {
writer.println(timeoutCommand);
writer.close();
}
FileUtil.setExecutable(shellFile, true);
Shell.ShellCommandExecutor shexc
= new Shell.ShellCommandExecutor(new String[]{shellFile.getAbsolutePath()},
null, null, 100);
shexc = new Shell.ShellCommandExecutor(new String[]{shellFile.getAbsolutePath()},
null, null, 100);
try {
shexc.execute();
} catch (Exception e) {
//When timing out exception is thrown.
}
shellFile.delete();
assertTrue("Script didnt not timeout" , shexc.isTimedOut());
assertTrue("Script did not timeout" , shexc.isTimedOut());
}
private static int countTimerThreads() {
@ -129,7 +160,8 @@ private static int countTimerThreads() {
}
return count;
}
@Test
public void testShellCommandTimerLeak() throws Exception {
String quickCommand[] = new String[] {"/bin/sleep", "100"};
@ -152,16 +184,17 @@ public void testShellCommandTimerLeak() throws Exception {
assertEquals(timersBefore, timersAfter);
}
@Test
public void testGetCheckProcessIsAliveCommand() throws Exception {
String anyPid = "9999";
String[] checkProcessAliveCommand = Shell.getCheckProcessIsAliveCommand(
String[] checkProcessAliveCommand = getCheckProcessIsAliveCommand(
anyPid);
String[] expectedCommand;
if (Shell.WINDOWS) {
expectedCommand =
new String[]{ Shell.WINUTILS, "task", "isAlive", anyPid };
new String[]{getWinutilsPath(), "task", "isAlive", anyPid };
} else if (Shell.isSetsidAvailable) {
expectedCommand = new String[] { "bash", "-c", "kill -0 -- -" + anyPid };
} else {
@ -170,17 +203,18 @@ public void testGetCheckProcessIsAliveCommand() throws Exception {
Assert.assertArrayEquals(expectedCommand, checkProcessAliveCommand);
}
@Test
public void testGetSignalKillCommand() throws Exception {
String anyPid = "9999";
int anySignal = 9;
String[] checkProcessAliveCommand = Shell.getSignalKillCommand(anySignal,
String[] checkProcessAliveCommand = getSignalKillCommand(anySignal,
anyPid);
String[] expectedCommand;
if (Shell.WINDOWS) {
expectedCommand =
new String[]{ Shell.WINUTILS, "task", "isAlive", anyPid };
new String[]{getWinutilsPath(), "task", "kill", anyPid };
} else if (Shell.isSetsidAvailable) {
expectedCommand = new String[] { "bash", "-c", "kill -9 -- -" + anyPid };
} else {
@ -188,7 +222,6 @@ public void testGetSignalKillCommand() throws Exception {
}
Assert.assertArrayEquals(expectedCommand, checkProcessAliveCommand);
}
private void testInterval(long interval) throws IOException {
Command command = new Command(interval);
@ -203,4 +236,190 @@ private void testInterval(long interval) throws IOException {
assertEquals(2, command.getRunCount());
}
}
@Test
public void testHadoopHomeUnset() throws Throwable {
assertHomeResolveFailed(null, "unset");
}
@Test
public void testHadoopHomeEmpty() throws Throwable {
assertHomeResolveFailed("", E_HADOOP_PROPS_EMPTY);
}
@Test
public void testHadoopHomeEmptyDoubleQuotes() throws Throwable {
assertHomeResolveFailed("\"\"", E_HADOOP_PROPS_EMPTY);
}
@Test
public void testHadoopHomeEmptySingleQuote() throws Throwable {
assertHomeResolveFailed("\"", E_HADOOP_PROPS_EMPTY);
}
@Test
public void testHadoopHomeValid() throws Throwable {
File f = checkHadoopHomeInner(rootTestDir.getCanonicalPath());
assertEquals(rootTestDir, f);
}
@Test
public void testHadoopHomeValidQuoted() throws Throwable {
File f = checkHadoopHomeInner('"'+ rootTestDir.getCanonicalPath() + '"');
assertEquals(rootTestDir, f);
}
@Test
public void testHadoopHomeNoDir() throws Throwable {
assertHomeResolveFailed(methodDir.getCanonicalPath(), E_DOES_NOT_EXIST);
}
@Test
public void testHadoopHomeNotADir() throws Throwable {
File touched = touch(methodDir);
try {
assertHomeResolveFailed(touched.getCanonicalPath(), E_NOT_DIRECTORY);
} finally {
FileUtils.deleteQuietly(touched);
}
}
@Test
public void testHadoopHomeRelative() throws Throwable {
assertHomeResolveFailed("./target", E_IS_RELATIVE);
}
@Test
public void testBinDirMissing() throws Throwable {
FileNotFoundException ex = assertWinutilsResolveFailed(methodDir,
E_DOES_NOT_EXIST);
assertInString(ex.toString(), "Hadoop bin directory");
}
@Test
public void testHadoopBinNotADir() throws Throwable {
File bin = new File(methodDir, "bin");
touch(bin);
try {
assertWinutilsResolveFailed(methodDir, E_NOT_DIRECTORY);
} finally {
FileUtils.deleteQuietly(methodDir);
}
}
@Test
public void testBinWinUtilsFound() throws Throwable {
try {
File bin = new File(methodDir, "bin");
File winutils = new File(bin, WINUTILS_EXE);
touch(winutils);
assertEquals(winutils.getCanonicalPath(),
getQualifiedBinInner(methodDir, WINUTILS_EXE).getCanonicalPath());
} finally {
FileUtils.deleteQuietly(methodDir);
}
}
@Test
public void testBinWinUtilsNotAFile() throws Throwable {
try {
File bin = new File(methodDir, "bin");
File winutils = new File(bin, WINUTILS_EXE);
winutils.mkdirs();
assertWinutilsResolveFailed(methodDir, E_NOT_EXECUTABLE_FILE);
} finally {
FileUtils.deleteDirectory(methodDir);
}
}
/**
* This test takes advantage of the invariant winutils path is valid
* or access to it will raise an exception holds on Linux, and without
* any winutils binary even if HADOOP_HOME points to a real hadoop
* directory, the exception reporting can be validated
*/
@Test
public void testNoWinutilsOnUnix() throws Throwable {
Assume.assumeFalse(WINDOWS);
try {
getWinutilsFile();
} catch (FileNotFoundException ex) {
assertExContains(ex, E_NOT_A_WINDOWS_SYSTEM);
}
try {
getWinutilsPath();
} catch (RuntimeException ex) {
assertExContains(ex, E_NOT_A_WINDOWS_SYSTEM);
if ( ex.getCause() == null
|| !(ex.getCause() instanceof FileNotFoundException)) {
throw ex;
}
}
}
/**
* Touch a file; creating parent dirs on demand.
* @param path path of file
* @return the file created
* @throws IOException on any failure to write
*/
private File touch(File path) throws IOException {
path.getParentFile().mkdirs();
FileUtils.writeByteArrayToFile(path, new byte[]{});
return path;
}
/**
* Assert that an attept to resolve the hadoop home dir failed with
* an expected text in the exception string value.
* @param path input
* @param expectedText expected exception text
* @return the caught exception
* @throws FileNotFoundException any FileNotFoundException that was thrown
* but which did not contain the expected text
*/
private FileNotFoundException assertHomeResolveFailed(String path,
String expectedText) throws Exception {
try {
File f = checkHadoopHomeInner(path);
fail("Expected an exception with the text `" + expectedText + "`"
+ " -but got the path " + f);
// unreachable
return null;
} catch (FileNotFoundException ex) {
assertExContains(ex, expectedText);
return ex;
}
}
/**
* Assert that an attept to resolve the {@code bin/winutils.exe} failed with
* an expected text in the exception string value.
* @param hadoopHome hadoop home directory
* @param expectedText expected exception text
* @return the caught exception
* @throws Exception any Exception that was thrown
* but which did not contain the expected text
*/
private FileNotFoundException assertWinutilsResolveFailed(File hadoopHome,
String expectedText) throws Exception {
try {
File f = getQualifiedBinInner(hadoopHome, WINUTILS_EXE);
fail("Expected an exception with the text `" + expectedText + "`"
+ " -but got the path " + f);
// unreachable
return null;
} catch (FileNotFoundException ex) {
assertExContains(ex, expectedText);
return ex;
}
}
private void assertExContains(Exception ex, String expectedText)
throws Exception {
if (!ex.toString().contains(expectedText)) {
throw ex;
}
}
}

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@ -45,13 +45,18 @@ public class TestWinUtils {
private static final Log LOG = LogFactory.getLog(TestWinUtils.class);
private static File TEST_DIR = new File(System.getProperty("test.build.data",
"/tmp"), TestWinUtils.class.getSimpleName());
"target"+File.pathSeparator + "tmp"), TestWinUtils.class.getSimpleName());
String winutils;
@Before
public void setUp() {
public void setUp() throws IOException {
// Not supported on non-Windows platforms
assumeTrue(Shell.WINDOWS);
TEST_DIR.mkdirs();
assertTrue("Failed to create Test directory " + TEST_DIR,
TEST_DIR.isDirectory() );
winutils = Shell.getWinutilsPath();
}
@After
@ -59,46 +64,55 @@ public void tearDown() throws IOException {
FileUtil.fullyDelete(TEST_DIR);
}
private void requireWinutils() throws IOException {
Shell.getWinutilsPath();
}
// Helper routine that writes the given content to the file.
private void writeFile(File file, String content) throws IOException {
byte[] data = content.getBytes();
FileOutputStream os = new FileOutputStream(file);
os.write(data);
os.close();
try (FileOutputStream os = new FileOutputStream(file)) {
os.write(data);
os.close();
}
}
// Helper routine that reads the first 100 bytes from the file.
private String readFile(File file) throws IOException {
FileInputStream fos = new FileInputStream(file);
byte[] b = new byte[100];
fos.read(b);
return b.toString();
byte[] b;
try (FileInputStream fos = new FileInputStream(file)) {
b = new byte[100];
int count = fos.read(b);
assertEquals(100, count);
}
return new String(b);
}
@Test (timeout = 30000)
public void testLs() throws IOException {
requireWinutils();
final String content = "6bytes";
final int contentSize = content.length();
File testFile = new File(TEST_DIR, "file1");
writeFile(testFile, content);
// Verify permissions and file name return tokens
String testPath = testFile.getCanonicalPath();
String output = Shell.execCommand(
Shell.WINUTILS, "ls", testFile.getCanonicalPath());
winutils, "ls", testPath);
String[] outputArgs = output.split("[ \r\n]");
assertTrue(outputArgs[0].equals("-rwx------"));
assertTrue(outputArgs[outputArgs.length - 1]
.equals(testFile.getCanonicalPath()));
assertEquals("-rwx------", outputArgs[0]);
assertEquals(outputArgs[outputArgs.length - 1], testPath);
// Verify most tokens when using a formatted output (other tokens
// will be verified with chmod/chown)
output = Shell.execCommand(
Shell.WINUTILS, "ls", "-F", testFile.getCanonicalPath());
winutils, "ls", "-F", testPath);
outputArgs = output.split("[|\r\n]");
assertEquals(9, outputArgs.length);
assertTrue(outputArgs[0].equals("-rwx------"));
assertEquals("-rwx------", outputArgs[0]);
assertEquals(contentSize, Long.parseLong(outputArgs[4]));
assertTrue(outputArgs[8].equals(testFile.getCanonicalPath()));
assertEquals(outputArgs[8], testPath);
testFile.delete();
assertFalse(testFile.exists());
@ -106,41 +120,42 @@ public void testLs() throws IOException {
@Test (timeout = 30000)
public void testGroups() throws IOException {
requireWinutils();
String currentUser = System.getProperty("user.name");
// Verify that groups command returns information about the current user
// groups when invoked with no args
String outputNoArgs = Shell.execCommand(
Shell.WINUTILS, "groups").trim();
winutils, "groups").trim();
String output = Shell.execCommand(
Shell.WINUTILS, "groups", currentUser).trim();
winutils, "groups", currentUser).trim();
assertEquals(output, outputNoArgs);
// Verify that groups command with the -F flag returns the same information
String outputFormat = Shell.execCommand(
Shell.WINUTILS, "groups", "-F", currentUser).trim();
winutils, "groups", "-F", currentUser).trim();
outputFormat = outputFormat.replace("|", " ");
assertEquals(output, outputFormat);
}
private void chmod(String mask, File file) throws IOException {
Shell.execCommand(
Shell.WINUTILS, "chmod", mask, file.getCanonicalPath());
winutils, "chmod", mask, file.getCanonicalPath());
}
private void chmodR(String mask, File file) throws IOException {
Shell.execCommand(
Shell.WINUTILS, "chmod", "-R", mask, file.getCanonicalPath());
winutils, "chmod", "-R", mask, file.getCanonicalPath());
}
private String ls(File file) throws IOException {
return Shell.execCommand(
Shell.WINUTILS, "ls", file.getCanonicalPath());
winutils, "ls", file.getCanonicalPath());
}
private String lsF(File file) throws IOException {
return Shell.execCommand(
Shell.WINUTILS, "ls", "-F", file.getCanonicalPath());
winutils, "ls", "-F", file.getCanonicalPath());
}
private void assertPermissions(File file, String expected)
@ -151,6 +166,7 @@ private void assertPermissions(File file, String expected)
private void testChmodInternal(String mode, String expectedPerm)
throws IOException {
requireWinutils();
File a = new File(TEST_DIR, "file1");
assertTrue(a.createNewFile());
@ -168,6 +184,7 @@ private void testChmodInternal(String mode, String expectedPerm)
}
private void testNewFileChmodInternal(String expectedPerm) throws IOException {
requireWinutils();
// Create a new directory
File dir = new File(TEST_DIR, "dir1");
@ -190,6 +207,7 @@ private void testNewFileChmodInternal(String expectedPerm) throws IOException {
private void testChmodInternalR(String mode, String expectedPerm,
String expectedPermx) throws IOException {
requireWinutils();
// Setup test folder hierarchy
File a = new File(TEST_DIR, "a");
assertTrue(a.mkdir());
@ -226,6 +244,7 @@ private void testChmodInternalR(String mode, String expectedPerm,
@Test (timeout = 30000)
public void testBasicChmod() throws IOException {
requireWinutils();
// - Create a file.
// - Change mode to 377 so owner does not have read permission.
// - Verify the owner truly does not have the permissions to read.
@ -249,7 +268,7 @@ public void testBasicChmod() throws IOException {
try {
writeFile(a, "test");
assertFalse("writeFile should have failed!", true);
fail("writeFile should have failed!");
} catch (IOException ex) {
LOG.info("Expected: Failed write to a file with permissions 577");
}
@ -261,14 +280,14 @@ public void testBasicChmod() throws IOException {
// - Change mode to 677 so owner does not have execute permission.
// - Verify the owner truly does not have the permissions to execute the file.
File winutilsFile = new File(Shell.WINUTILS);
File winutilsFile = Shell.getWinutilsFile();
File aExe = new File(TEST_DIR, "a.exe");
FileUtils.copyFile(winutilsFile, aExe);
chmod("677", aExe);
try {
Shell.execCommand(aExe.getCanonicalPath(), "ls");
assertFalse("executing " + aExe + " should have failed!", true);
fail("executing " + aExe + " should have failed!");
} catch (IOException ex) {
LOG.info("Expected: Failed to execute a file with permissions 677");
}
@ -278,6 +297,7 @@ public void testBasicChmod() throws IOException {
/** Validate behavior of chmod commands on directories on Windows. */
@Test (timeout = 30000)
public void testBasicChmodOnDir() throws IOException {
requireWinutils();
// Validate that listing a directory with no read permission fails
File a = new File(TEST_DIR, "a");
File b = new File(a, "b");
@ -287,8 +307,7 @@ public void testBasicChmodOnDir() throws IOException {
// Remove read permissions on directory a
chmod("300", a);
String[] files = a.list();
assertTrue("Listing a directory without read permission should fail",
null == files);
assertNull("Listing a directory without read permission should fail", files);
// restore permissions
chmod("700", a);
@ -306,7 +325,7 @@ public void testBasicChmodOnDir() throws IOException {
// FILE_WRITE_DATA/FILE_ADD_FILE privilege is denied on
// the dir.
c.createNewFile();
assertFalse("writeFile should have failed!", true);
fail("writeFile should have failed!");
} catch (IOException ex) {
LOG.info("Expected: Failed to create a file when directory "
+ "permissions are 577");
@ -356,6 +375,7 @@ public void testBasicChmodOnDir() throws IOException {
@Test (timeout = 30000)
public void testChmod() throws IOException {
requireWinutils();
testChmodInternal("7", "-------rwx");
testChmodInternal("70", "----rwx---");
testChmodInternal("u-x,g+r,o=g", "-rw-r--r--");
@ -376,7 +396,7 @@ public void testChmod() throws IOException {
private void chown(String userGroup, File file) throws IOException {
Shell.execCommand(
Shell.WINUTILS, "chown", userGroup, file.getCanonicalPath());
winutils, "chown", userGroup, file.getCanonicalPath());
}
private void assertOwners(File file, String expectedUser,
@ -390,6 +410,7 @@ private void assertOwners(File file, String expectedUser,
@Test (timeout = 30000)
public void testChown() throws IOException {
requireWinutils();
File a = new File(TEST_DIR, "a");
assertTrue(a.createNewFile());
String username = System.getProperty("user.name");
@ -415,12 +436,13 @@ public void testChown() throws IOException {
@Test (timeout = 30000)
public void testSymlinkRejectsForwardSlashesInLink() throws IOException {
requireWinutils();
File newFile = new File(TEST_DIR, "file");
assertTrue(newFile.createNewFile());
String target = newFile.getPath();
String link = new File(TEST_DIR, "link").getPath().replaceAll("\\\\", "/");
try {
Shell.execCommand(Shell.WINUTILS, "symlink", link, target);
Shell.execCommand(winutils, "symlink", link, target);
fail(String.format("did not receive expected failure creating symlink "
+ "with forward slashes in link: link = %s, target = %s", link, target));
} catch (IOException e) {
@ -431,12 +453,13 @@ public void testSymlinkRejectsForwardSlashesInLink() throws IOException {
@Test (timeout = 30000)
public void testSymlinkRejectsForwardSlashesInTarget() throws IOException {
requireWinutils();
File newFile = new File(TEST_DIR, "file");
assertTrue(newFile.createNewFile());
String target = newFile.getPath().replaceAll("\\\\", "/");
String link = new File(TEST_DIR, "link").getPath();
try {
Shell.execCommand(Shell.WINUTILS, "symlink", link, target);
Shell.execCommand(winutils, "symlink", link, target);
fail(String.format("did not receive expected failure creating symlink "
+ "with forward slashes in target: link = %s, target = %s", link, target));
} catch (IOException e) {
@ -447,6 +470,7 @@ public void testSymlinkRejectsForwardSlashesInTarget() throws IOException {
@Test (timeout = 30000)
public void testReadLink() throws IOException {
requireWinutils();
// Create TEST_DIR\dir1\file1.txt
//
File dir1 = new File(TEST_DIR, "dir1");
@ -462,18 +486,18 @@ public void testReadLink() throws IOException {
// symlink to file1.txt.
//
Shell.execCommand(
Shell.WINUTILS, "symlink", dirLink.toString(), dir1.toString());
winutils, "symlink", dirLink.toString(), dir1.toString());
Shell.execCommand(
Shell.WINUTILS, "symlink", fileLink.toString(), file1.toString());
winutils, "symlink", fileLink.toString(), file1.toString());
// Read back the two links and ensure we get what we expected.
//
String readLinkOutput = Shell.execCommand(Shell.WINUTILS,
String readLinkOutput = Shell.execCommand(winutils,
"readlink",
dirLink.toString());
assertThat(readLinkOutput, equalTo(dir1.toString()));
readLinkOutput = Shell.execCommand(Shell.WINUTILS,
readLinkOutput = Shell.execCommand(winutils,
"readlink",
fileLink.toString());
assertThat(readLinkOutput, equalTo(file1.toString()));
@ -483,7 +507,7 @@ public void testReadLink() throws IOException {
try {
// No link name specified.
//
Shell.execCommand(Shell.WINUTILS, "readlink", "");
Shell.execCommand(winutils, "readlink", "");
fail("Failed to get Shell.ExitCodeException when reading bad symlink");
} catch (Shell.ExitCodeException ece) {
assertThat(ece.getExitCode(), is(1));
@ -492,7 +516,7 @@ public void testReadLink() throws IOException {
try {
// Bad link name.
//
Shell.execCommand(Shell.WINUTILS, "readlink", "ThereIsNoSuchLink");
Shell.execCommand(winutils, "readlink", "ThereIsNoSuchLink");
fail("Failed to get Shell.ExitCodeException when reading bad symlink");
} catch (Shell.ExitCodeException ece) {
assertThat(ece.getExitCode(), is(1));
@ -501,7 +525,7 @@ public void testReadLink() throws IOException {
try {
// Non-symlink directory target.
//
Shell.execCommand(Shell.WINUTILS, "readlink", dir1.toString());
Shell.execCommand(winutils, "readlink", dir1.toString());
fail("Failed to get Shell.ExitCodeException when reading bad symlink");
} catch (Shell.ExitCodeException ece) {
assertThat(ece.getExitCode(), is(1));
@ -510,7 +534,7 @@ public void testReadLink() throws IOException {
try {
// Non-symlink file target.
//
Shell.execCommand(Shell.WINUTILS, "readlink", file1.toString());
Shell.execCommand(winutils, "readlink", file1.toString());
fail("Failed to get Shell.ExitCodeException when reading bad symlink");
} catch (Shell.ExitCodeException ece) {
assertThat(ece.getExitCode(), is(1));
@ -519,7 +543,7 @@ public void testReadLink() throws IOException {
try {
// Too many parameters.
//
Shell.execCommand(Shell.WINUTILS, "readlink", "a", "b");
Shell.execCommand(winutils, "readlink", "a", "b");
fail("Failed to get Shell.ExitCodeException with bad parameters");
} catch (Shell.ExitCodeException ece) {
assertThat(ece.getExitCode(), is(1));
@ -529,6 +553,7 @@ public void testReadLink() throws IOException {
@SuppressWarnings("deprecation")
@Test(timeout=10000)
public void testTaskCreate() throws IOException {
requireWinutils();
File batch = new File(TEST_DIR, "testTaskCreate.cmd");
File proof = new File(TEST_DIR, "testTaskCreate.out");
FileWriter fw = new FileWriter(batch);
@ -538,7 +563,7 @@ public void testTaskCreate() throws IOException {
assertFalse(proof.exists());
Shell.execCommand(Shell.WINUTILS, "task", "create", "testTaskCreate" + testNumber,
Shell.execCommand(winutils, "task", "create", "testTaskCreate" + testNumber,
batch.getAbsolutePath());
assertTrue(proof.exists());
@ -550,30 +575,31 @@ public void testTaskCreate() throws IOException {
@Test (timeout = 30000)
public void testTaskCreateWithLimits() throws IOException {
requireWinutils();
// Generate a unique job id
String jobId = String.format("%f", Math.random());
// Run a task without any options
String out = Shell.execCommand(Shell.WINUTILS, "task", "create",
String out = Shell.execCommand(winutils, "task", "create",
"job" + jobId, "cmd /c echo job" + jobId);
assertTrue(out.trim().equals("job" + jobId));
// Run a task without any limits
jobId = String.format("%f", Math.random());
out = Shell.execCommand(Shell.WINUTILS, "task", "create", "-c", "-1", "-m",
out = Shell.execCommand(winutils, "task", "create", "-c", "-1", "-m",
"-1", "job" + jobId, "cmd /c echo job" + jobId);
assertTrue(out.trim().equals("job" + jobId));
// Run a task with limits (128MB should be enough for a cmd)
jobId = String.format("%f", Math.random());
out = Shell.execCommand(Shell.WINUTILS, "task", "create", "-c", "10000", "-m",
out = Shell.execCommand(winutils, "task", "create", "-c", "10000", "-m",
"128", "job" + jobId, "cmd /c echo job" + jobId);
assertTrue(out.trim().equals("job" + jobId));
// Run a task without enough memory
try {
jobId = String.format("%f", Math.random());
out = Shell.execCommand(Shell.WINUTILS, "task", "create", "-m", "128", "job"
out = Shell.execCommand(winutils, "task", "create", "-m", "128", "job"
+ jobId, "java -Xmx256m -version");
fail("Failed to get Shell.ExitCodeException with insufficient memory");
} catch (Shell.ExitCodeException ece) {
@ -584,7 +610,7 @@ public void testTaskCreateWithLimits() throws IOException {
//
try {
jobId = String.format("%f", Math.random());
Shell.execCommand(Shell.WINUTILS, "task", "create", "-c", "-1", "-m",
Shell.execCommand(winutils, "task", "create", "-c", "-1", "-m",
"-1", "foo", "job" + jobId, "cmd /c echo job" + jobId);
fail("Failed to get Shell.ExitCodeException with bad parameters");
} catch (Shell.ExitCodeException ece) {
@ -593,7 +619,7 @@ public void testTaskCreateWithLimits() throws IOException {
try {
jobId = String.format("%f", Math.random());
Shell.execCommand(Shell.WINUTILS, "task", "create", "-c", "-m", "-1",
Shell.execCommand(winutils, "task", "create", "-c", "-m", "-1",
"job" + jobId, "cmd /c echo job" + jobId);
fail("Failed to get Shell.ExitCodeException with bad parameters");
} catch (Shell.ExitCodeException ece) {
@ -602,7 +628,7 @@ public void testTaskCreateWithLimits() throws IOException {
try {
jobId = String.format("%f", Math.random());
Shell.execCommand(Shell.WINUTILS, "task", "create", "-c", "foo",
Shell.execCommand(winutils, "task", "create", "-c", "foo",
"job" + jobId, "cmd /c echo job" + jobId);
fail("Failed to get Shell.ExitCodeException with bad parameters");
} catch (Shell.ExitCodeException ece) {

View File

@ -51,8 +51,11 @@ static class ProcessInfo {
public static boolean isAvailable() {
if (Shell.WINDOWS) {
if (!Shell.hasWinutilsPath()) {
return false;
}
ShellCommandExecutor shellExecutor = new ShellCommandExecutor(
new String[] { Shell.WINUTILS, "help" });
new String[] { Shell.getWinutilsPath(), "help" });
try {
shellExecutor.execute();
} catch (IOException e) {
@ -75,9 +78,10 @@ public WindowsBasedProcessTree(String pid) {
// helper method to override while testing
String getAllProcessInfoFromShell() {
ShellCommandExecutor shellExecutor = new ShellCommandExecutor(
new String[] { Shell.WINUTILS, "task", "processList", taskProcessId });
try {
ShellCommandExecutor shellExecutor = new ShellCommandExecutor(
new String[] {Shell.getWinutilsFile().getCanonicalPath(),
"task", "processList", taskProcessId });
shellExecutor.execute();
return shellExecutor.getOutput();
} catch (IOException e) {

View File

@ -401,7 +401,7 @@ protected String[] getRunCommand(String command, String groupId,
cpuRate = Math.min(10000, (int) (containerCpuPercentage * 100));
}
}
return new String[] { Shell.WINUTILS, "task", "create", "-m",
return new String[] { Shell.getWinutilsPath(), "task", "create", "-m",
String.valueOf(memory), "-c", String.valueOf(cpuRate), groupId,
"cmd /c " + command };
} else {

View File

@ -578,7 +578,8 @@ protected String[] getRunCommand(String command, String groupId,
LOG.debug(String.format("getRunCommand: %s exists:%b",
command, f.exists()));
}
return new String[] { Shell.WINUTILS, "task", "createAsUser", groupId,
return new String[] { Shell.getWinutilsPath(), "task",
"createAsUser", groupId,
userName, pidFile.toString(), "cmd /c " + command };
}

View File

@ -24,7 +24,6 @@
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.nio.ByteBuffer;
import java.util.ArrayList;
@ -747,16 +746,9 @@ protected void link(Path src, Path dst) throws IOException {
File srcFile = new File(src.toUri().getPath());
String srcFileStr = srcFile.getPath();
String dstFileStr = new File(dst.toString()).getPath();
// If not on Java7+ on Windows, then copy file instead of symlinking.
// See also FileUtil#symLink for full explanation.
if (!Shell.isJava7OrAbove() && srcFile.isFile()) {
lineWithLenCheck(String.format("@copy \"%s\" \"%s\"", srcFileStr, dstFileStr));
errorCheck();
} else {
lineWithLenCheck(String.format("@%s symlink \"%s\" \"%s\"", Shell.WINUTILS,
dstFileStr, srcFileStr));
errorCheck();
}
lineWithLenCheck(String.format("@%s symlink \"%s\" \"%s\"",
Shell.getWinutilsPath(), dstFileStr, srcFileStr));
errorCheck();
}
@Override

View File

@ -34,6 +34,7 @@
import static org.junit.Assert.*;
import static org.junit.Assume.assumeTrue;
@SuppressWarnings("deprecation")
public class TestContainerExecutor {
private ContainerExecutor containerExecutor = new DefaultContainerExecutor();

View File

@ -978,7 +978,7 @@ public void testWindowsShellScriptBuilderCommand() throws IOException {
Assume.assumeTrue(Shell.WINDOWS);
// The tests are built on assuming 8191 max command line length
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGHT);
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGTH);
ShellScriptBuilder builder = ShellScriptBuilder.create();
@ -987,11 +987,11 @@ public void testWindowsShellScriptBuilderCommand() throws IOException {
org.apache.commons.lang.StringUtils.repeat("A", 1024)));
builder.command(Arrays.asList(
org.apache.commons.lang.StringUtils.repeat(
"E", Shell.WINDOWS_MAX_SHELL_LENGHT - callCmd.length())));
"E", Shell.WINDOWS_MAX_SHELL_LENGTH - callCmd.length())));
try {
builder.command(Arrays.asList(
org.apache.commons.lang.StringUtils.repeat(
"X", Shell.WINDOWS_MAX_SHELL_LENGHT -callCmd.length() + 1)));
"X", Shell.WINDOWS_MAX_SHELL_LENGTH -callCmd.length() + 1)));
fail("longCommand was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
@ -1026,17 +1026,17 @@ public void testWindowsShellScriptBuilderEnv() throws IOException {
Assume.assumeTrue(Shell.WINDOWS);
// The tests are built on assuming 8191 max command line length
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGHT);
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGTH);
ShellScriptBuilder builder = ShellScriptBuilder.create();
// test env
builder.env("somekey", org.apache.commons.lang.StringUtils.repeat("A", 1024));
builder.env("somekey", org.apache.commons.lang.StringUtils.repeat(
"A", Shell.WINDOWS_MAX_SHELL_LENGHT - ("@set somekey=").length()));
"A", Shell.WINDOWS_MAX_SHELL_LENGTH - ("@set somekey=").length()));
try {
builder.env("somekey", org.apache.commons.lang.StringUtils.repeat(
"A", Shell.WINDOWS_MAX_SHELL_LENGHT - ("@set somekey=").length()) + 1);
"A", Shell.WINDOWS_MAX_SHELL_LENGTH - ("@set somekey=").length()) + 1);
fail("long env was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
@ -1051,17 +1051,17 @@ public void testWindowsShellScriptBuilderMkdir() throws IOException {
Assume.assumeTrue(Shell.WINDOWS);
// The tests are built on assuming 8191 max command line length
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGHT);
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGTH);
ShellScriptBuilder builder = ShellScriptBuilder.create();
// test mkdir
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat("A", 1024)));
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat(
"E", (Shell.WINDOWS_MAX_SHELL_LENGHT - mkDirCmd.length())/2)));
"E", (Shell.WINDOWS_MAX_SHELL_LENGTH - mkDirCmd.length())/2)));
try {
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat(
"X", (Shell.WINDOWS_MAX_SHELL_LENGHT - mkDirCmd.length())/2 +1)));
"X", (Shell.WINDOWS_MAX_SHELL_LENGTH - mkDirCmd.length())/2 +1)));
fail("long mkdir was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
@ -1072,11 +1072,10 @@ public void testWindowsShellScriptBuilderMkdir() throws IOException {
public void testWindowsShellScriptBuilderLink() throws IOException {
// Test is only relevant on Windows
Assume.assumeTrue(Shell.WINDOWS);
String linkCmd = "@" +Shell.WINUTILS + " symlink \"\" \"\"";
String linkCmd = "@" + Shell.getWinutilsPath() + " symlink \"\" \"\"";
// The tests are built on assuming 8191 max command line length
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGHT);
assertEquals(8191, Shell.WINDOWS_MAX_SHELL_LENGTH);
ShellScriptBuilder builder = ShellScriptBuilder.create();
@ -1085,15 +1084,15 @@ public void testWindowsShellScriptBuilderLink() throws IOException {
new Path(org.apache.commons.lang.StringUtils.repeat("B", 1024)));
builder.link(
new Path(org.apache.commons.lang.StringUtils.repeat(
"E", (Shell.WINDOWS_MAX_SHELL_LENGHT - linkCmd.length())/2)),
"E", (Shell.WINDOWS_MAX_SHELL_LENGTH - linkCmd.length())/2)),
new Path(org.apache.commons.lang.StringUtils.repeat(
"F", (Shell.WINDOWS_MAX_SHELL_LENGHT - linkCmd.length())/2)));
"F", (Shell.WINDOWS_MAX_SHELL_LENGTH - linkCmd.length())/2)));
try {
builder.link(
new Path(org.apache.commons.lang.StringUtils.repeat(
"X", (Shell.WINDOWS_MAX_SHELL_LENGHT - linkCmd.length())/2 + 1)),
"X", (Shell.WINDOWS_MAX_SHELL_LENGTH - linkCmd.length())/2 + 1)),
new Path(org.apache.commons.lang.StringUtils.repeat(
"Y", (Shell.WINDOWS_MAX_SHELL_LENGHT - linkCmd.length())/2) + 1));
"Y", (Shell.WINDOWS_MAX_SHELL_LENGTH - linkCmd.length())/2) + 1));
fail("long link was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));