Exceptions and logging

[levi]

Hi,

1) TransactionNum
I'm overriding this method in my own IDACall

@Override
public DSResponse handleDSRequest(DSRequest dsRequest, RPCManager rpc, RequestContext context)

and want to log the transactionNum, but it's null (see screenshot in Eclipse debugger).

I can get the number via

RPCManager.getTransactionNum(dsRequest.context.request)

Is that the normal way?



2) Exception lost
When I call super.handleDSRequest(dsRequest, rpc, context), everything boils down OK, till a point where I throw a RuntimeException (that's OK, I want it).
However, that call catches the exception and puts it in the DSResponse as data.

I see the exception and stacktrace logged in the SmartClient server log file:

[l0-5] WARN  RequestContext - dsRequest.execute() failed: ....

But I'd like to catch it myself (/as well). Is there some override point I can use to pass some more information about the exception to the DSResponse object?


some more info:
This is the stacktrace logged above found in the SmartClient server log file. ZzzIDACall.java:79 is the place where I expected to catch that error.

zzz.server.util.error.ZzzRuntimeException: not found.
	at zzz.server.util.general.ZzzSessionUtil.postSessionInvoke(ZzzSessionUtil.java:33)
	at zzz.server.stores.ZzzAncestorSessStore.postInvoke(ZzzAncestorSessStore.java:268)
	at zzz.server.stores.menu.MNodeSessStore.getM(MNodeSessStore.java:44)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.isomorphic.base.Reflection.adaptArgsAndInvoke(Reflection.java:883)
	at com.isomorphic.datasource.DataSourceDMI.execute(DataSourceDMI.java:575)
	at com.isomorphic.datasource.DataSourceDMI.execute(DataSourceDMI.java:64)
	at com.isomorphic.datasource.DSRequest.execute(DSRequest.java:1413)
	at com.isomorphic.servlet.IDACall.handleDSRequest(IDACall.java:173)
	at zzz.server.custom.ZzzIDACall.handleDSRequest(ZzzIDACall.java:79)
	at com.isomorphic.servlet.IDACall.processRPCTransaction(IDACall.java:130)
	at com.isomorphic.servlet.IDACall.processRequest(IDACall.java:95)
	at com.isomorphic.servlet.IDACall.doPost(IDACall.java:54)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at com.isomorphic.servlet.BaseServlet.service(BaseServlet.java:152)
	at zzz.server.custom.ZzzIDACall.service(ZzzIDACall.java:60)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

thanks
SmartClient Version: SC_SNAPSHOT-2010-10-27

[Isomorphic]

1) there's not currently an official API to get it, but you'll notice it is passed as an HTTP parameter as well

2) not clear on what you want - it seems like your options are the usual ones: either catch the exception yourself, or to throw it through and accept how it's handled.

[levi]

1) Well, there is API for it: RPCManager rpc.getTransactionNum(), but it returns null.

2) Somewhere dsRequest.execute() seems to catch the exception and puts the message in the dsResponse data.
Can I somehow override this behavior (and put the stacktrace etc also in the dsResponse) ?

[Isomorphic]

1) there's no official (meaning: documented and supported) API

2) if you don't want the default handling, catch the exception with logic in a DMI rather than allowing it to be thrown through