/// <summary>Load configuration from a list of files until the first successful load</summary>
/// <param name="conf">the configuration object</param>
/// <param name="files">the list of filenames to try</param>
/// <returns>the configuration object</returns>
internal static Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig LoadFirst(string prefix
, params string[] fileNames)
{
foreach (string fname in fileNames)
{
try
{
Org.Apache.Commons.Configuration.Configuration cf = new PropertiesConfiguration(fname
).InterpolatedConfiguration();
Log.Info("loaded properties from " + fname);
Log.Debug(ToString(cf));
Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig mc = new Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig
(cf, prefix);
Log.Debug(mc);
return(mc);
}
catch (ConfigurationException e)
{
if (e.Message.StartsWith("Cannot locate configuration"))
{
continue;
}
throw new MetricsConfigException(e);
}
}
Log.Warn("Cannot locate configuration: tried " + Joiner.On(",").Join(fileNames));
// default to an empty configuration
return(new Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig(new PropertiesConfiguration
(), prefix));
}
// pluginLoader.close(); // jdk7 is saner
internal virtual MetricsFilter GetFilter(string prefix)
{
// don't create filter instances without out options
Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig conf = ((Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig
)Subset(prefix));
if (conf.IsEmpty())
{
return(null);
}
MetricsFilter filter = GetPlugin(prefix);
if (filter != null)
{
return(filter);
}
// glob filter is assumed if pattern is specified but class is not.
filter = new GlobFilter();
filter.Init(conf);
return(filter);
}
> GetInstanceConfigs(string type)
{
IDictionary <string, Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig> map = Maps.NewHashMap
();
Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig sub = ((Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig
)Subset(type));
foreach (string key in sub.Keys())
{
Matcher matcher = InstanceRegex.Matcher(key);
if (matcher.Matches())
{
string instance = matcher.Group(1);
if (!map.Contains(instance))
{
map[instance] = ((Org.Apache.Hadoop.Metrics2.Impl.MetricsConfig)sub.Subset(instance
));
}
}
}
return(map);
}
