public NodeStatus getStatus() {
state.state = NodeState.valueOf(getDriver().getState().toString());
return state;
}
public void loadConfig(FlumeConfigData cfg)
throws IOException, RuntimeException, FlumeSpecException {
// got a newer configuration
LOG.debug("Attempt to load config " + cfg);
EventSink newSnk = null;
EventSource newSrc = null;
try {
String errMsg = null;
if (cfg.sinkConfig == null || cfg.sinkConfig.length() == 0) {
errMsg = this.getName() + " - empty sink";
}
if (cfg.sourceConfig == null || cfg.sourceConfig.length() == 0) {
errMsg = this.getName() + " - empty source";
}
if (errMsg != null) {
LOG.info(errMsg);
return; // Do nothing.
}
newSnk = FlumeBuilder.buildSink(ctx, cfg.sinkConfig);
newSrc = FlumeBuilder.buildSource(ctx, cfg.sourceConfig);
// TODO (jon) ERROR isn't quite right here -- the connection is in ERROR
// but the previous connection is ok. Need to just add states to the
// connections, and have each node maintain a list of connections.
// This error conditions should not occur. One way we could have this
// error is if the node does not have all plugins that the master has
// installed. The master could then accept a particular source/sink but
// the node would fail when attempting to instantiate it.
if (newSnk == null) {
LOG.error("failed to create sink config: " + cfg.sinkConfig);
state.state = NodeState.ERROR;
return;
}
if (newSrc == null) {
LOG.error("failed to create sink config: " + cfg.sourceConfig);
state.state = NodeState.ERROR;
return;
}
} catch (RuntimeException e) {
LOG.error("Runtime ex: " + new File(".").getAbsolutePath() + " " + cfg, e);
state.state = NodeState.ERROR;
throw e;
} catch (FlumeSpecException e) {
LOG.error("FlumeSpecExn : " + new File(".").getAbsolutePath() + " " + cfg, e);
state.state = NodeState.ERROR;
throw e;
}
try {
loadNodeDriver(newSrc, newSnk);
// We have successfully opened the source and sinks for the config. We can
// mark this as the last good / successful config. It does not mean that
// this configuration will open without errors!
this.lastGoodCfg = cfg;
LOG.info("Node config successfully set to " + cfg);
} catch (InterruptedException e) {
// TODO figure out what to do on interruption
LOG.error("Load Config interrupted", e);
}
}