org.apache.storm.utils

Interface ShellLogHandler

All Known Implementing Classes:

DefaultShellLogHandler

public interface ShellLogHandler

Handle logging from non-JVM processes.

Method Summary

Modifier and Type	Method and Description
void	log(ShellMsg msg) Called by spouts and bolts when they receive a ‘log’ command from a multilang process.
void	setUpContext(Class<?> ownerCls, ShellProcess process, TopologyContext context) Called at least once before log(org.apache.storm.multilang.ShellMsg) for each spout and bolt.

Method Detail

setUpContext

void setUpContext(Class<?> ownerCls,
                  ShellProcess process,
                  TopologyContext context)

Called at least once before log(org.apache.storm.multilang.ShellMsg) for each spout and bolt. Allows implementing classes to save information about the current running context e.g. pid, thread, task.

Parameters:

ownerCls -

• the class which instantiated this ShellLogHandler.

process -

• the current ShellProcess.

context -

• the current TopologyContext.

log

void log(ShellMsg msg)

Called by spouts and bolts when they receive a ‘log’ command from a multilang process.

Parameters:

msg -

• the ShellMsg containing the message to log.