Function test_important_plugin

tests/test_plugin.py:2106–2162

(node_factory)

def test_important_plugin(node_factory):
    # Cache it here.
    pluginsdir = os.path.join(os.path.dirname(__file__), "plugins")

    n = node_factory.get_node(options={"important-plugin": os.path.join(pluginsdir, "nonexistent")},
                              may_fail=True, expect_fail=True,
                              allow_broken_log=True, start=False)

    n.daemon.start(wait_for_initialized=False, stderr_redir=True)
    # Will exit with failure code.
    assert n.daemon.wait() == 1
    assert n.daemon.is_in_stderr(r"Failed to register .*nonexistent: No such file or directory")

    # Check we exit if the important plugin dies.
    n.daemon.opts['important-plugin'] = os.path.join(pluginsdir, "fail_by_itself.py")

    n.daemon.start(wait_for_initialized=False)
    # Will exit with failure code.
    assert n.daemon.wait() == 1
    n.daemon.wait_for_log(r'fail_by_itself.py: Plugin marked as important, shutting down lightningd')

    # Check if the important plugin is disabled, we run as normal.
    n.daemon.opts['disable-plugin'] = "fail_by_itself.py"
    n.daemon.start()
    # Make sure we can call into a plugin RPC (this is from `bcli`) even
    # if fail_by_itself.py is disabled.
    n.rpc.call("estimatefees", {})
    n.stop()

    # Check if an important plugin dies later, we fail.
    del n.daemon.opts['disable-plugin']
    n.daemon.opts['important-plugin'] = os.path.join(pluginsdir, "suicidal_plugin.py")

    n.start()

    with pytest.raises(RpcError):
        n.rpc.call("die", {})

    # Should exit with exitcode 1
    n.daemon.wait_for_log('suicidal_plugin.py: Plugin marked as important, shutting down lightningd')
    assert n.daemon.wait() == 1
    n.stop()

    # Check that if a builtin plugin dies, we fail.
    start = n.daemon.logsearch_start
    n.start()
    # Reset logsearch_start, since this will predate message that start() looks for.
    n.daemon.logsearch_start = start
    line = n.daemon.wait_for_log(r'.*started\([0-9]*\).*plugins/pay')
    pidstr = re.search(r'.*started\(([0-9]*)\).*plugins/pay', line).group(1)

    # Kill pay.
    os.kill(int(pidstr), signal.SIGKILL)
    n.daemon.wait_for_log('pay: Plugin marked as important, shutting down lightningd')
    # Should exit with exitcode 1
    assert n.daemon.wait() == 1
    n.stop()