tree f819fc69765b051fa76fc9285fa86ca21a47b286
parent 271d143dc372989c57eb6a8bad8de731220e8108
author Matt Spinler <spinler@us.ibm.com> 1671126889 -0600
committer Matt Spinler <spinler@us.ibm.com> 1674592085 +0000

PEL: Capture the journal in UserData sections

If a PEL message registry entry has a 'JournalCapture' section, capture
the listed portions of the journal in UserData sections for that error.

If the JSON looks like:

"JournalCapture": {
    "NumLines": 30
}

Then the code will capture the previous 30 lines from the journal into a
single UserData section.

If the JSON looks like:

"JournalCapture":
{
    "Sections": [
        {
            "SyslogID": "phosphor-bmc-state-manager",
            "NumLines": 20
        },
        {
            "SyslogID": "phosphor-log-manager",
            "NumLines": 15
        }
    ]
}

Then the code will create two UserData sections, the first with the most
recent 20 lines from phosphor-bmc-state-manager, and the second with 15
lines from phosphor-log-manager.

If a section would cause the PEL to exceed its maximum size of 16KB, it
will be dropped.  While the UserData class does have a shrink() method,
it prunes data from the end, which would cause the most recent journal
entries to be removed, which could be misleading.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I2ecbd8002b0e7087eb166a1219c6ab9da14a122a