/**
* Starts sinks from a given metrics configuration. This is made public for unit test.
*
* @param config the metrics config
*/
public static synchronized void startSinksFromConfig(MetricsConfig config) {
if (sSinks != null) {
LOG.warn("Sinks have already been started.");
return;
}
sSinks = new ArrayList<>();
Map<String, Properties> sinkConfigs =
MetricsConfig.subProperties(config.getProperties(), SINK_REGEX);
for (Map.Entry<String, Properties> entry : sinkConfigs.entrySet()) {
String classPath = entry.getValue().getProperty("class");
if (classPath != null) {
try {
Sink sink =
(Sink)
Class.forName(classPath)
.getConstructor(Properties.class, MetricRegistry.class)
.newInstance(entry.getValue(), METRIC_REGISTRY);
sSinks.add(sink);
} catch (Exception e) {
LOG.error("Sink class {} cannot be instantiated", classPath, e);
}
}
}
}
