callstackitem

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1

I would like to log in serveral services the stack-trace.
I can do that in an exception, when I catch an error, I call the service
WmPublic/pub.flow:getLastError and get the pipeline lastError/callStack.
But I would like to get the callStack anytime from anywhere in a service, not only after an error occured, because I need it to log the Stack into my log-files.

Can anybody help me here ?

2

Hi Ralf,

We created the following java service to do this. It will return the stack in a string list.

String[] serviceStack; 
IDataCursor idc_pipeline = pipeline.getCursor();

try {
    Thread t = Thread.currentThread(); 
    com.wm.app.b2b.server.ServerThread st = (com.wm.app.b2b.server.ServerThread)t; 
    java.util.Stack stack = st.getState().getCallStack(); 

	serviceStack = new String[stack.size()];

	if (stack.size() > 0) {		
		for (int i=0;i<stack.size();i++) {
			serviceStack[i] = stack.elementAt(i).toString();
		}
	}
} catch (Exception e) {
  	throw new ServiceException(e);
}

// pipeline
IDataCursor pipelineCursor = pipeline.getCursor();
IDataUtil.put( pipelineCursor, "serviceStack", serviceStack );
pipelineCursor.destroy();

Mvg,

Dave

3

Hi Dave,

Do you know how to do it in wM 7.1?

I get a java error at compile time. The getState method from ServerThread does not exist anymore.

Any ideas how to do it now?

Many Thanks,
Ganesh

4

Hi Ganesh,

what about getCurrentState()?

As this is undocument

5

If you change this line…

java.util.Stack stack = st.getState().getCallStack();

…into this…

java.util.Stack stack = st.getInvokeState().getCallStack();

…then it should work in 7.1.