libvirt/tests/objecteventtest.c
Eric Blake 31b5bad9ff event: make deregister return value match docs
Ever since their introduction (commit 1509b80 in v0.5.0 for
virConnectDomainEventRegister, commit 4445723 in v0.8.0 for
virConnectDomainEventDeregisterAny), the event deregistration
functions have been documented as returning 0 on success;
likewise for older registration (only the newer RegisterAny
must return a non-zero callbackID).  And now that we are
adding virConnectNetworkEventDeregisterAny for v1.2.1, it
should have the same semantics.

Fortunately, all of the stateful drivers have been obeying
the docs and returning 0, thanks to the way the remote_driver
tracks things (in fact, the RPC wire protocol is unable to
send a return value for DomainEventRegisterAny, at least not
without adding a new RPC number).  Well, except for vbox,
which was always failing deregistration, due to failure to
set the return value to anything besides its initial -1.

But for local drivers, such as test:///default, we've been
returning non-zero numbers; worse, the non-zero numbers have
differed over time.  For example, in Fedora 12 (libvirt 0.8.2),
calling Register twice would return 0 and 1 [the callbackID
generated under the hood]; while in Fedora 20 (libvirt 1.1.3),
it returns 1 and 2 [the number of callbacks registered for
that event type].  Since we have changed the behavior over
time, and since it differs by local vs. remote, we can safely
argue that no one could have been reasonably relying on any
particular behavior, so we might as well obey the docs, as well
as prepare callers that might deal with older clients to not be
surprised if the docs are not strictly followed.

For consistency, this patch fixes the code for all drivers,
even though it only makes an impact for vbox and for local
drivers.  By fixing all drivers, future copy and paste from
a remote driver to a local driver is less likely to
reintroduce the bug.

Finally, update the testsuite to gain some coverage of the
issue for local drivers, including the first test of old-style
domain event registration via function pointer instead of
event id.

* src/libvirt.c (virConnectDomainEventRegister)
(virConnectDomainEventDeregister)
(virConnectDomainEventDeregisterAny): Clarify docs.
* src/libxl/libxl_driver.c (libxlConnectDomainEventRegister)
(libxlConnectDomainEventDeregister)
(libxlConnectDomainEventDeregisterAny): Match documentation.
* src/lxc/lxc_driver.c (lxcConnectDomainEventRegister)
(lxcConnectDomainEventDeregister)
(lxcConnectDomainEventDeregisterAny): Likewise.
* src/test/test_driver.c (testConnectDomainEventRegister)
(testConnectDomainEventDeregister)
(testConnectDomainEventDeregisterAny)
(testConnectNetworkEventDeregisterAny): Likewise.
* src/uml/uml_driver.c (umlConnectDomainEventRegister)
(umlConnectDomainEventDeregister)
(umlConnectDomainEventDeregisterAny): Likewise.
* src/vbox/vbox_tmpl.c (vboxConnectDomainEventRegister)
(vboxConnectDomainEventDeregister)
(vboxConnectDomainEventDeregisterAny): Likewise.
* src/xen/xen_driver.c (xenUnifiedConnectDomainEventRegister)
(xenUnifiedConnectDomainEventDeregister)
(xenUnifiedConnectDomainEventDeregisterAny): Likewise.
* src/network/bridge_driver.c
(networkConnectNetworkEventDeregisterAny): Likewise.
* tests/objecteventtest.c (testDomainCreateXMLOld): New test.
(mymain): Run it.
(testDomainCreateXML): Check return values.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-01-07 06:53:40 -07:00

468 lines
12 KiB
C

/*
* Copyright (C) 2014 Red Hat, Inc.
* Copyright (C) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Cedric Bosdonnat <cbosdonnat@suse.com>
*/
#include <config.h>
#include "testutils.h"
#include "virerror.h"
#include "virxml.h"
#define VIR_FROM_THIS VIR_FROM_NONE
static const char domainDef[] =
"<domain type='test'>"
" <name>test-domain</name>"
" <uuid>77a6fc12-07b5-9415-8abb-a803613f2a40</uuid>"
" <memory>8388608</memory>"
" <currentMemory>2097152</currentMemory>"
" <vcpu>2</vcpu>"
" <os>"
" <type>hvm</type>"
" </os>"
"</domain>";
static const char networkDef[] =
"<network>\n"
" <name>test</name>\n"
" <bridge name=\"virbr0\"/>\n"
" <forward/>\n"
" <ip address=\"192.168.122.1\" netmask=\"255.255.255.0\">\n"
" <dhcp>\n"
" <range start=\"192.168.122.2\" end=\"192.168.122.254\"/>\n"
" </dhcp>\n"
" </ip>\n"
"</network>\n";
typedef struct {
int startEvents;
int stopEvents;
int defineEvents;
int undefineEvents;
int unexpectedEvents;
} lifecycleEventCounter;
static void
lifecycleEventCounter_reset(lifecycleEventCounter *counter)
{
counter->startEvents = 0;
counter->stopEvents = 0;
counter->defineEvents = 0;
counter->undefineEvents = 0;
counter->unexpectedEvents = 0;
}
typedef struct {
virConnectPtr conn;
virNetworkPtr net;
} objecteventTest;
static int
domainLifecycleCb(virConnectPtr conn ATTRIBUTE_UNUSED,
virDomainPtr dom ATTRIBUTE_UNUSED,
int event,
int detail ATTRIBUTE_UNUSED,
void *opaque)
{
lifecycleEventCounter *counter = opaque;
switch (event) {
case VIR_DOMAIN_EVENT_STARTED:
counter->startEvents++;
break;
case VIR_DOMAIN_EVENT_STOPPED:
counter->stopEvents++;
break;
case VIR_DOMAIN_EVENT_DEFINED:
counter->defineEvents++;
break;
case VIR_DOMAIN_EVENT_UNDEFINED:
counter->undefineEvents++;
break;
default:
/* Ignore other events */
break;
}
return 0;
}
static void
networkLifecycleCb(virConnectPtr conn ATTRIBUTE_UNUSED,
virNetworkPtr net ATTRIBUTE_UNUSED,
int event,
int detail ATTRIBUTE_UNUSED,
void* opaque)
{
lifecycleEventCounter *counter = opaque;
if (event == VIR_NETWORK_EVENT_STARTED)
counter->startEvents++;
else if (event == VIR_NETWORK_EVENT_STOPPED)
counter->stopEvents++;
else if (event == VIR_NETWORK_EVENT_DEFINED)
counter->defineEvents++;
else if (event == VIR_NETWORK_EVENT_UNDEFINED)
counter->undefineEvents++;
}
static int
testDomainCreateXMLOld(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
virDomainPtr dom = NULL;
int ret = -1;
bool registered = false;
lifecycleEventCounter_reset(&counter);
if (virConnectDomainEventRegister(test->conn,
domainLifecycleCb,
&counter, NULL) != 0)
goto cleanup;
registered = true;
dom = virDomainCreateXML(test->conn, domainDef, 0);
if (dom == NULL || virEventRunDefaultImpl() < 0)
goto cleanup;
if (counter.startEvents != 1 || counter.unexpectedEvents > 0)
goto cleanup;
if (virConnectDomainEventDeregister(test->conn, domainLifecycleCb) != 0)
goto cleanup;
registered = false;
ret = 0;
cleanup:
if (registered)
virConnectDomainEventDeregister(test->conn, domainLifecycleCb);
if (dom) {
virDomainDestroy(dom);
virDomainFree(dom);
}
return ret;
}
static int
testDomainCreateXML(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
int eventId = VIR_DOMAIN_EVENT_ID_LIFECYCLE;
virDomainPtr dom = NULL;
int id;
int ret = -1;
lifecycleEventCounter_reset(&counter);
id = virConnectDomainEventRegisterAny(test->conn, NULL, eventId,
VIR_DOMAIN_EVENT_CALLBACK(&domainLifecycleCb),
&counter, NULL);
if (id < 0)
goto cleanup;
dom = virDomainCreateXML(test->conn, domainDef, 0);
if (dom == NULL || virEventRunDefaultImpl() < 0)
goto cleanup;
if (counter.startEvents != 1 || counter.unexpectedEvents > 0)
goto cleanup;
if (virConnectDomainEventDeregisterAny(test->conn, id) != 0)
goto cleanup;
id = -1;
ret = 0;
cleanup:
if (id >= 0)
virConnectDomainEventDeregisterAny(test->conn, id);
if (dom) {
virDomainDestroy(dom);
virDomainFree(dom);
}
return ret;
}
static int
testDomainDefine(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
int eventId = VIR_DOMAIN_EVENT_ID_LIFECYCLE;
virDomainPtr dom = NULL;
int id;
int ret = 0;
lifecycleEventCounter_reset(&counter);
id = virConnectDomainEventRegisterAny(test->conn, NULL, eventId,
VIR_DOMAIN_EVENT_CALLBACK(&domainLifecycleCb),
&counter, NULL);
/* Make sure the define event is triggered */
dom = virDomainDefineXML(test->conn, domainDef);
if (dom == NULL || virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.defineEvents != 1 || counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
/* Make sure the undefine event is triggered */
virDomainUndefine(dom);
if (virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.undefineEvents != 1 || counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
cleanup:
virConnectDomainEventDeregisterAny(test->conn, id);
if (dom != NULL)
virDomainFree(dom);
return ret;
}
static int
testDomainStartStopEvent(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
int eventId = VIR_DOMAIN_EVENT_ID_LIFECYCLE;
int id;
int ret = 0;
virDomainPtr dom;
lifecycleEventCounter_reset(&counter);
dom = virDomainLookupByName(test->conn, "test");
if (dom == NULL)
return -1;
id = virConnectDomainEventRegisterAny(test->conn, dom, eventId,
VIR_DOMAIN_EVENT_CALLBACK(&domainLifecycleCb),
&counter, NULL);
/* Test domain is started */
virDomainDestroy(dom);
virDomainCreate(dom);
if (virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.startEvents != 1 || counter.stopEvents != 1 ||
counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
cleanup:
virConnectDomainEventDeregisterAny(test->conn, id);
virDomainFree(dom);
return ret;
}
static int
testNetworkCreateXML(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
virNetworkPtr net;
int id;
int ret = 0;
lifecycleEventCounter_reset(&counter);
id = virConnectNetworkEventRegisterAny(test->conn, NULL,
VIR_NETWORK_EVENT_ID_LIFECYCLE,
VIR_NETWORK_EVENT_CALLBACK(&networkLifecycleCb),
&counter, NULL);
net = virNetworkCreateXML(test->conn, networkDef);
if (virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.startEvents != 1 || counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
cleanup:
virConnectNetworkEventDeregisterAny(test->conn, id);
virNetworkDestroy(net);
virNetworkFree(net);
return ret;
}
static int
testNetworkDefine(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
virNetworkPtr net;
int id;
int ret = 0;
lifecycleEventCounter_reset(&counter);
id = virConnectNetworkEventRegisterAny(test->conn, NULL,
VIR_NETWORK_EVENT_ID_LIFECYCLE,
VIR_NETWORK_EVENT_CALLBACK(&networkLifecycleCb),
&counter, NULL);
/* Make sure the define event is triggered */
net = virNetworkDefineXML(test->conn, networkDef);
if (virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.defineEvents != 1 || counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
/* Make sure the undefine event is triggered */
virNetworkUndefine(net);
if (virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.undefineEvents != 1 || counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
cleanup:
virConnectNetworkEventDeregisterAny(test->conn, id);
virNetworkFree(net);
return ret;
}
static int
testNetworkStartStopEvent(const void *data)
{
const objecteventTest *test = data;
lifecycleEventCounter counter;
int id;
int ret = 0;
lifecycleEventCounter_reset(&counter);
id = virConnectNetworkEventRegisterAny(test->conn, test->net,
VIR_NETWORK_EVENT_ID_LIFECYCLE,
VIR_NETWORK_EVENT_CALLBACK(&networkLifecycleCb),
&counter, NULL);
virNetworkCreate(test->net);
virNetworkDestroy(test->net);
if (virEventRunDefaultImpl() < 0) {
ret = -1;
goto cleanup;
}
if (counter.startEvents != 1 || counter.stopEvents != 1 ||
counter.unexpectedEvents > 0) {
ret = -1;
goto cleanup;
}
cleanup:
virConnectNetworkEventDeregisterAny(test->conn, id);
return ret;
}
static int
mymain(void)
{
objecteventTest test;
int ret = EXIT_SUCCESS;
virEventRegisterDefaultImpl();
if (!(test.conn = virConnectOpen("test:///default")))
return EXIT_FAILURE;
virtTestQuiesceLibvirtErrors(false);
/* Domain event tests */
if (virtTestRun("Domain createXML start event (old API)",
testDomainCreateXMLOld, &test) < 0)
ret = EXIT_FAILURE;
if (virtTestRun("Domain createXML start event (new API)",
testDomainCreateXML, &test) < 0)
ret = EXIT_FAILURE;
if (virtTestRun("Domain (un)define events", testDomainDefine, &test) < 0)
ret = EXIT_FAILURE;
if (virtTestRun("Domain start stop events", testDomainStartStopEvent, &test) < 0)
ret = EXIT_FAILURE;
/* Network event tests */
/* Tests requiring the test network not to be set up*/
if (virtTestRun("Network createXML start event ", testNetworkCreateXML, &test) < 0)
ret = EXIT_FAILURE;
if (virtTestRun("Network (un)define events", testNetworkDefine, &test) < 0)
ret = EXIT_FAILURE;
/* Define a test network */
test.net = virNetworkDefineXML(test.conn, networkDef);
if (virtTestRun("Network start stop events ", testNetworkStartStopEvent, &test) < 0)
ret = EXIT_FAILURE;
/* Cleanup */
virNetworkUndefine(test.net);
virNetworkFree(test.net);
virConnectClose(test.conn);
return ret;
}
VIRT_TEST_MAIN(mymain)