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Daniel Hilst
da14ab03bb
The install monitor holds the later connections for a node whose handler
is still running, and forks the next one when it reaps that handler.
SIGCHLD is what brings the parent back to look: it interrupts the accept.
A handler can exit after the parent checks its queue and before the
accept begins. The signal is then handled where there is no accept to
interrupt, and the parent blocks in accept with a connection already
queued and ready to run. That connection waits until some other node
calls in. A single node retrying on its own waits until it times out.
do_installm_service now waits through wait_for_installm_connection, which
selects on the listening socket. The wait is bounded by
$installm_wakeup_seconds while connections are queued, so the parent
looks at its queue again instead of waiting for another client. An idle
monitor with an empty queue still waits without a bound, because a
handler that exits then leaves nothing to do.
The new case asserts the wait ends on its own bound with nothing to
accept, and ends at once when a connection is already there. It fails
when the bound is ignored.
Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
(cherry picked from commit 5ac62ebb51)
xCAT-test
Unit tests that run from the source checkout are split by implementation language:
| Test type | Location | Runner |
|---|---|---|
| Perl unit tests | xCAT-test/unit/*.t |
prove -r xCAT-test/unit |
| Shell unit tests | xCAT-test/bats/*.bats |
bats -r xCAT-test/bats |
| CLI functional tests | xCAT-test/autotest/testcase/ and xCAT-test/autotest/bundle/ |
xcattest -f <cluster.conf> -t <case> or xcattest -f <cluster.conf> -b <bundle> |
Use Perl .t tests for Perl modules, Perl scripts, templates, and repository
artifacts. Use BATS tests for shell-script behavior that can be exercised from
the checkout by sourcing a shell library or script and shadowing external
commands.
Shell behavior should not be tested by Perl tests that grep shell source. Put
those tests under xCAT-test/bats instead.
See unit/README.md and bats/README.md for the detailed rules for
each unit-test suite.