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HADOOP-15377. Improve debug messages in MetricsConfig.java 

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
This commit is contained in:
BELUGA BEHR 2018-05-02 17:09:22 +09:00 committed by Akira Ajisaka
parent 1a95a4524a
commit 33768724ff
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GPG Key ID: C1EDBB9CA400FD50
1 changed files with 30 additions and 20 deletions
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50
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsConfig.java
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@ -118,20 +118,23 @@ class MetricsConfig extends SubsetConfiguration {
.setListDelimiterHandler(new DefaultListDelimiterHandler(',')))
.getConfiguration()
.interpolatedConfiguration();
LOG.info("loaded properties from "+ fname);
LOG.debug(toString(cf));
LOG.info("Loaded properties from {}", fname);
if (LOG.isDebugEnabled()) {
LOG.debug("Properties: {}", toString(cf));
}
MetricsConfig mc = new MetricsConfig(cf, prefix);
LOG.debug(mc.toString());
LOG.debug("Metrics Config: {}", mc);
return mc;
} catch (ConfigurationException e) {
// Commons Configuration defines the message text when file not found
if (e.getMessage().startsWith("Could not locate")) {
LOG.debug("Could not locate file {}", fname, e);
continue;
}
throw new MetricsConfigException(e);
}
}
LOG.warn("Cannot locate configuration: tried "+
LOG.warn("Cannot locate configuration: tried " +
Joiner.on(",").join(fileNames));
// default to an empty configuration
return new MetricsConfig(new PropertiesConfiguration(), prefix);
@ -168,7 +171,6 @@ class MetricsConfig extends SubsetConfiguration {
Iterable<String> keys() {
return new Iterable<String>() {
@SuppressWarnings("unchecked")
@Override
public Iterator<String> iterator() {
return (Iterator<String>) getKeys();
@ -186,21 +188,21 @@ class MetricsConfig extends SubsetConfiguration {
Object value = super.getPropertyInternal(key);
if (value == null) {
if (LOG.isDebugEnabled()) {
LOG.debug("poking parent '"+ getParent().getClass().getSimpleName() +
"' for key: "+ key);
LOG.debug("poking parent '" + getParent().getClass().getSimpleName() +
"' for key: " + key);
}
return getParent().getProperty(key.startsWith(PREFIX_DEFAULT) ? key
: PREFIX_DEFAULT + key);
}
if (LOG.isDebugEnabled()) {
LOG.debug("returning '"+ value +"' for key: "+ key);
}
LOG.debug("Returning '{}' for key: {}", value, key);
return value;
}
<T extends MetricsPlugin> T getPlugin(String name) {
String clsName = getClassName(name);
if (clsName == null) return null;
if (clsName == null) {
return null;
}
try {
Class<?> cls = Class.forName(clsName, true, getPluginLoader());
@SuppressWarnings("unchecked")
@ -213,9 +215,9 @@ class MetricsConfig extends SubsetConfiguration {
}
String getClassName(String prefix) {
String classKey = prefix.isEmpty() ? "class" : prefix +".class";
String classKey = prefix.isEmpty() ? "class" : prefix.concat(".class");
String clsName = getString(classKey);
LOG.debug(clsName);
LOG.debug("Class name for prefix {} is {}", prefix, clsName);
if (clsName == null || clsName.isEmpty()) {
return null;
}
@ -223,25 +225,29 @@ class MetricsConfig extends SubsetConfiguration {
}
ClassLoader getPluginLoader() {
if (pluginLoader != null) return pluginLoader;
if (pluginLoader != null) {
return pluginLoader;
}
final ClassLoader defaultLoader = getClass().getClassLoader();
Object purls = super.getProperty(PLUGIN_URLS_KEY);
if (purls == null) return defaultLoader;
if (purls == null) {
return defaultLoader;
}
Iterable<String> jars = SPLITTER.split((String) purls);
int len = Iterables.size(jars);
if ( len > 0) {
if (len > 0) {
final URL[] urls = new URL[len];
try {
int i = 0;
for (String jar : jars) {
LOG.debug(jar);
LOG.debug("Parsing URL for {}", jar);
urls[i++] = new URL(jar);
}
} catch (Exception e) {
throw new MetricsConfigException(e);
}
if (LOG.isDebugEnabled()) {
LOG.debug("using plugin jars: "+ Iterables.toString(jars));
LOG.debug("Using plugin jars: {}", Iterables.toString(jars));
}
pluginLoader = doPrivileged(new PrivilegedAction<ClassLoader>() {
@Override public ClassLoader run() {
@ -259,9 +265,13 @@ class MetricsConfig extends SubsetConfiguration {
MetricsFilter getFilter(String prefix) {
// don't create filter instances without out options
MetricsConfig conf = subset(prefix);
if (conf.isEmpty()) return null;
if (conf.isEmpty()) {
return null;
}
MetricsFilter filter = getPlugin(prefix);
if (filter != null) return filter;
if (filter != null) {
return filter;
}
// glob filter is assumed if pattern is specified but class is not.
filter = new GlobFilter();
filter.init(conf);