Is there a way to monitor and record COM calls, with parameters, made into a specific EXE/DLL module, without explicitly adding logging functionality to the module itself? I'm thinking along the lines of how you can track windows messages in Spy++, but for COM.
The motivation is to record calls for diagnostic and automated testing purposes - e.g. click a button on a window on a client PC, monitor the COM calls sent to a server module, and later 'replay' those calls without needing the client PC.
If tools exist which do this, that is great. If not, is it something one could write and if so how?
Caller of COM method simply calls a function with agreed convention. parameters etc. and there is no middle layer between the caller and the callee, except when proxy/stub pairs are marshaling the call. Even in the latter case, there is ho standard way to hook the call for logging purposes, which you can do without specific preparations of sorts. All in all, you need to take care of tracking calls and diagnostic yourself. In can direct logging in prolog of every method of interest, or you can wrap your object/interface into customized middle layer which tracks a call and passes it further to intended callee (such as described here, for example).