Re: [PATCH 3/6] tests/qtest: migration: Add migrate_incoming_qmp helper

[Fabiano Rosas <farosas@suse.de>]

Peter Xu <peterx@redhat.com> writes:

> On Wed, Jun 28, 2023 at 01:55:39PM -0300, Fabiano Rosas wrote:
>> file-based migration requires the target to initiate its migration after
>> the source has finished writing out the data in the file. Currently
>> there's no easy way to initiate 'migrate-incoming', allow this by
>> introducing migrate_incoming_qmp helper, similarly to migrate_qmp.
>> 
>> Also make sure migration events are enabled and wait for the incoming
>> migration to start before returning. This avoid a race when querying
>> the migration status too soon after issuing the command.
>> 
>> Signed-off-by: Fabiano Rosas <farosas@suse.de>
>> ---
>>  tests/qtest/migration-helpers.c | 28 ++++++++++++++++++++++++++++
>>  tests/qtest/migration-helpers.h |  4 ++++
>>  2 files changed, 32 insertions(+)
>> 
>> diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c
>> index 2df198c99e..bc54b29184 100644
>> --- a/tests/qtest/migration-helpers.c
>> +++ b/tests/qtest/migration-helpers.c
>> @@ -81,6 +81,34 @@ void migrate_set_capability(QTestState *who, const char *capability,
>>                               capability, value);
>>  }
>>  
>> +void migrate_incoming_qmp(QTestState *to, const char *uri, const char *fmt, ...)
>> +{
>> +    va_list ap;
>> +    QDict *args, *rsp, *data;
>> +
>> +    va_start(ap, fmt);
>> +    args = qdict_from_vjsonf_nofail(fmt, ap);
>> +    va_end(ap);
>> +
>> +    g_assert(!qdict_haskey(args, "uri"));
>> +    qdict_put_str(args, "uri", uri);
>> +
>> +    migrate_set_capability(to, "events", true);
>> +
>> +    rsp = qtest_qmp(to, "{ 'execute': 'migrate-incoming', 'arguments': %p}",
>> +                    args);
>> +    g_assert(qdict_haskey(rsp, "return"));
>
> rsp leaked?
>

Good catch. I'll fix it.