Feature #23146
DAQInterface could provide on-demand information about individual artdaq process statuses
100%
Description
During a conversation I had with Eric and Ryan Rivera yesterday concerning how the OTSDAQ framework could benefit from DAQInterface functionality, it was suggested that it would be useful if DAQInterface could provide information to the external world on-demand about what the individual artdaq process statuses are. Currently it just reports whether or not there's a problem with the individual artdaq process statuses (e.g., a transition didn't go through as expected, or a process reported Error), and it does so in a printout to stdout, which is useful for human beings, but less so for controlling programs like OTSDAQ or a Run Control.
Associated revisions
JCF: Issue #23146: rename the process-query function "artdaq_process_info" and have it return the full string over XML-RPC which it also writes to /tmp/artdaq_process_info_$USER_$DAQINTERFACE_PARTITION_NUMBER
History
#1 Updated by John Freeman 5 months ago
- % Done changed from 0 to 100
- Status changed from New to Resolved
This Issue is ready for review using the head of feature/issue23146_artdaq_process_info, commit 09affcb0f2dc46f08db0e2d5e54f6b02dd5ea396. First, to quote the commit comment:
JCF: provide individual artdaq process states on demand
When status_with_side_effects.sh is executed (or, more generally, the
state_with_side_effects XML-RPC command is sent to DAQInterface - yes,
slightly different name than the script) DAQInterface will do the following:
It produces an ASCII file of the form /tmp/artdaq_process_states_<username>_partition<partition #>,
with a list of the existing processes and their statuses. If "debug_level" is set to 5 or higher, the
list will also appear in DAQInterface's stdout - note this very high level since the output tends to
interfere with output from DAQInterface's main thread of execution.
This commit is designed to satisfy Issue #23146
To be concrete, sending this command to DAQInterface for me created a file called /tmp/artdaq_process_states_jcfree_partition1; an example of its contents is:
component_throws_exception Error EventBuilder1 Running EventBuilder2 Running DataLogger1 Running
and another is:
component_throws_exception Initializing EventBuilder1 Ready EventBuilder2 Ready DataLogger1 Ready
i.e., the format is that each artdaq process gets its own row, with its label and then it state listed.
#2 Updated by John Freeman 3 months ago
- Status changed from Resolved to Work in progress
I'm un-resolving this issue thanks to an email Gray sent this morning in which he asked how one could find the port # of an artdaq process. Eric suggested it would be nice if this were something you could query DAQInterface about, and that appears to overlap with this Issue. So, when status_with_side_effects.sh is executed, the output could not only be each artdaq process's state, but also useful info like its host, port, subsystem...basically the info in the ranks.txt file. E.g.:
component_throws_exception at mu2edaq13:10500 (subsystem 1, rank 0) : Initializing EventBuilder1 at mu2edaq11:10501 (subsystem 1, rank 1): Ready EventBuilder2 at mu2edaq11:10502 (subsystem 1, rank 2): Ready DataLogger1 at mu2edaq11:10503 (subsystem 1, rank 3): Ready
#3 Updated by Eric Flumerfelt 3 months ago
Is it also possible to return this string as the XMLRPC result?
#4 Updated by John Freeman 3 months ago
- Status changed from Work in progress to Resolved
- Via XML-RPC, you can call a function in DAQInterface called "artdaq_process_info" which for each artdaq process will list not only its state, but also its socket, subsystem and rank. Executing artdaq_process_info.sh with the desired DAQInterface partition as argument will perform this call.
- This info both gets saved to /tmp/artdaq_process_info_${USER}_partition${DAQINTERFACE_PARTITION_NUMBER} and is returned in string form by the XML-RPC call
#5 Updated by Eric Flumerfelt 3 months ago
- Status changed from Resolved to Reviewed
- Co-Assignees Eric Flumerfelt added
Code reviewed and tested. Merged into develop.
JCF: provide individual artdaq process states on demand
When status_with_side_effects.sh is executed (or, more generally, the
state_with_side_effects XML-RPC command is sent to DAQInterface - yes,
slightly different name than the script) DAQInterface will do the following:
It produces an ASCII file of the form /tmp/artdaq_process_states_<username>_partition<partition #>,
with a list of the existing processes and their statuses. If "debug_level" is set to 5 or higher, the
list will also appear in DAQInterface's stdout - note this very high level since the output tends to
interfere with output from DAQInterface's main thread of execution.
This commit is designed to satisfy Issue #23146