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HADOOP-7749. Add a NetUtils createSocketAddr call which provides more help in exception messages. Contributed by Todd Lipcon.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1187103 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Todd Lipcon 2011-10-20 22:26:32 +00:00
parent 49baada6cc
commit 6cd5a1b0f7
3 changed files with 60 additions and 3 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -486,6 +486,9 @@ Release 0.23.0 - Unreleased
HADOOP-7705. Add a log4j back end that can push out JSON data,
one per line. (stevel)
HADOOP-7749. Add a NetUtils createSocketAddr call which provides more
help in exception messages. (todd)
OPTIMIZATIONS
HADOOP-7333. Performance improvement in PureJavaCrc32. (Eric Caspole

39
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetUtils.java
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@ -150,12 +150,38 @@ public static InetSocketAddress createSocketAddr(String target) {
*/
public static InetSocketAddress createSocketAddr(String target,
int defaultPort) {
return createSocketAddr(target, defaultPort, null);
}
/**
* Create an InetSocketAddress from the given target string and
* default port. If the string cannot be parsed correctly, the
* <code>configName</code> parameter is used as part of the
* exception message, allowing the user to better diagnose
* the misconfiguration.
*
* @param target a string of either "host" or "host:port"
* @param defaultPort the default port if <code>target</code> does not
* include a port number
* @param configName the name of the configuration from which
* <code>target</code> was loaded. This is used in the
* exception message in the case that parsing fails.
*/
public static InetSocketAddress createSocketAddr(String target,
int defaultPort,
String configName) {
String helpText = "";
if (configName != null) {
helpText = " (configuration property '" + configName + "')";
}
if (target == null) {
throw new IllegalArgumentException("Target address cannot be null.");
throw new IllegalArgumentException("Target address cannot be null." +
helpText);
}
int colonIndex = target.indexOf(':');
if (colonIndex < 0 && defaultPort == -1) {
throw new RuntimeException("Not a host:port pair: " + target);
throw new RuntimeException("Not a host:port pair: " + target +
helpText);
}
String hostname;
int port = -1;
@ -165,7 +191,14 @@ public static InetSocketAddress createSocketAddr(String target,
} else {
// must be the old style <host>:<port>
hostname = target.substring(0, colonIndex);
port = Integer.parseInt(target.substring(colonIndex + 1));
String portStr = target.substring(colonIndex + 1);
try {
port = Integer.parseInt(portStr);
} catch (NumberFormatException nfe) {
throw new IllegalArgumentException(
"Can't parse port '" + portStr + "'"
+ helpText);
}
}
} else {
// a new uri

21
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestNetUtils.java
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@ -164,6 +164,27 @@ public void testWrapUnknownHostException() throws Throwable {
assertInException(wrapped, "/UnknownHost");
}
@Test
public void testCreateSocketAddress() throws Throwable {
InetSocketAddress addr = NetUtils.createSocketAddr(
"127.0.0.1:12345", 1000, "myconfig");
assertEquals("127.0.0.1", addr.getAddress().getHostAddress());
assertEquals(12345, addr.getPort());
addr = NetUtils.createSocketAddr(
"127.0.0.1", 1000, "myconfig");
assertEquals("127.0.0.1", addr.getAddress().getHostAddress());
assertEquals(1000, addr.getPort());
try {
addr = NetUtils.createSocketAddr(
"127.0.0.1:blahblah", 1000, "myconfig");
fail("Should have failed to parse bad port");
} catch (IllegalArgumentException iae) {
assertInException(iae, "myconfig");
}
}
private void assertRemoteDetailsIncluded(IOException wrapped)
throws Throwable {
assertInException(wrapped, "desthost");