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HADOOP-6396. Fix unhelpful exception message when unable to parse umask (jghoman) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@887472 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jakob Homan 2009-12-05 00:46:08 +00:00
parent 3549d30d7e
commit 934deda190
3 changed files with 26 additions and 10 deletions
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3
CHANGES.txt
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@ -147,6 +147,9 @@ Release 0.21.0 - Unreleased
HADOOP-6303. Eclipse .classpath template has outdated jar files and is
missing some new ones. (cos)
HADOOP-6396. Fix uninformative exception message when unable to parse
umask. (jghoman)
NEW FEATURES
HADOOP-4268. Change fsck to use ClientProtocol methods so that the

24
src/java/org/apache/hadoop/fs/permission/FsPermission.java
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@ -21,8 +21,6 @@ import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.io.Writable;
@ -33,8 +31,6 @@ import org.apache.hadoop.io.WritableFactory;
* A class for file/directory permissions.
*/
public class FsPermission implements Writable {
private static final Log LOG = LogFactory.getLog(FsPermission.class);
static final WritableFactory FACTORY = new WritableFactory() {
public Writable newInstance() { return new FsPermission(); }
};
@ -182,7 +178,8 @@ public class FsPermission implements Writable {
otheraction.and(umask.otheraction.not()));
}
/** umask property label Deprecated key may be removed in version .23 */
/** umask property label deprecated key and code in getUMask method
* to accommodate it may be removed in version .23 */
public static final String DEPRECATED_UMASK_LABEL = "dfs.umask";
public static final String UMASK_LABEL =
CommonConfigurationKeys.FS_PERMISSIONS_UMASK_KEY;
@ -198,10 +195,19 @@ public class FsPermission implements Writable {
if(conf != null) {
String confUmask = conf.get(UMASK_LABEL);
if(confUmask != null) { // UMASK_LABEL is set
if(conf.deprecatedKeyWasSet(DEPRECATED_UMASK_LABEL))
umask = Integer.parseInt(confUmask); // Evaluate as decimal value
else
umask = new UmaskParser(confUmask).getUMask();
try {
if(conf.deprecatedKeyWasSet(DEPRECATED_UMASK_LABEL))
umask = Integer.parseInt(confUmask); // Evaluate as decimal value
else
umask = new UmaskParser(confUmask).getUMask();
} catch(IllegalArgumentException iae) {
// Provide more explanation for user-facing message
String type = iae instanceof NumberFormatException ? "decimal"
: "octal or symbolic";
throw new IllegalArgumentException("Unable to parse " + confUmask +
" as " + type + " umask.");
}
}
}

9
src/test/core/org/apache/hadoop/fs/permission/TestFsPermission.java
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@ -157,11 +157,18 @@ public class TestFsPermission extends TestCase {
FsPermission.getUMask(conf);
fail("Shouldn't have been able to parse bad umask");
} catch(IllegalArgumentException iae) {
assertEquals(iae.getMessage(), b);
assertTrue("Exception should specify parsing error and invalid umask: "
+ iae.getMessage(), isCorrectExceptionMessage(iae.getMessage(), b));
}
}
}
private boolean isCorrectExceptionMessage(String msg, String umask) {
return msg.contains("Unable to parse") &&
msg.contains(umask) &&
msg.contains("octal or symbolic");
}
// Ensure that when the deprecated decimal umask key is used, it is correctly
// parsed as such and converted correctly to an FsPermission value
public void testDeprecatedUmask() {