[PATCH v4 1/3] qmp.py: change event_wait to use a dict

[John Snow <jsnow@redhat.com>]

It's easier to work with than a list of tuples, because we can check the
keys for membership.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 python/qemu/machine.py        | 10 +++++-----
 tests/qemu-iotests/040        | 12 ++++++------
 tests/qemu-iotests/260        |  5 +++--
 tests/qemu-iotests/iotests.py | 16 ++++++++--------
 4 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/python/qemu/machine.py b/python/qemu/machine.py
index b9a98e2c86..eaedc25172 100644
--- a/python/qemu/machine.py
+++ b/python/qemu/machine.py
@@ -478,21 +478,21 @@ def event_wait(self, name, timeout=60.0, match=None):
         timeout: QEMUMonitorProtocol.pull_event timeout parameter.
         match: Optional match criteria. See event_match for details.
         """
-        return self.events_wait([(name, match)], timeout)
+        return self.events_wait({name: match}, timeout)
 
     def events_wait(self, events, timeout=60.0):
         """
         events_wait waits for and returns a named event from QMP with a timeout.
 
-        events: a sequence of (name, match_criteria) tuples.
+        events: a mapping containing {name: match_criteria}.
                 The match criteria are optional and may be None.
                 See event_match for details.
         timeout: QEMUMonitorProtocol.pull_event timeout parameter.
         """
         def _match(event):
-            for name, match in events:
-                if event['event'] == name and self.event_match(event, match):
-                    return True
+            name = event['event']
+            if name in events:
+                return self.event_match(event, events[name])
             return False
 
         # Search cached events
diff --git a/tests/qemu-iotests/040 b/tests/qemu-iotests/040
index 32c82b4ec6..90b59081ff 100755
--- a/tests/qemu-iotests/040
+++ b/tests/qemu-iotests/040
@@ -485,12 +485,12 @@ class TestErrorHandling(iotests.QMPTestCase):
 
     def run_job(self, expected_events, error_pauses_job=False):
         match_device = {'data': {'device': 'job0'}}
-        events = [
-            ('BLOCK_JOB_COMPLETED', match_device),
-            ('BLOCK_JOB_CANCELLED', match_device),
-            ('BLOCK_JOB_ERROR', match_device),
-            ('BLOCK_JOB_READY', match_device),
-        ]
+        events = {
+            'BLOCK_JOB_COMPLETED': match_device,
+            'BLOCK_JOB_CANCELLED': match_device,
+            'BLOCK_JOB_ERROR': match_device,
+            'BLOCK_JOB_READY': match_device,
+        }
 
         completed = False
         log = []
diff --git a/tests/qemu-iotests/260 b/tests/qemu-iotests/260
index 804a7addb9..729f031122 100755
--- a/tests/qemu-iotests/260
+++ b/tests/qemu-iotests/260
@@ -67,8 +67,9 @@ def test(persistent, restart):
 
     vm.qmp_log('block-commit', device='drive0', top=top,
                filters=[iotests.filter_qmp_testfiles])
-    ev = vm.events_wait((('BLOCK_JOB_READY', None),
-                         ('BLOCK_JOB_COMPLETED', None)))
+    ev = vm.events_wait({
+        'BLOCK_JOB_READY': None,
+        'BLOCK_JOB_COMPLETED': None })
     log(filter_qmp_event(ev))
     if (ev['event'] == 'BLOCK_JOB_COMPLETED'):
         vm.shutdown()
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 6c0e781af7..aada94f4f9 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -635,14 +635,14 @@ def run_job(self, job, auto_finalize=True, auto_dismiss=False,
         """
         match_device = {'data': {'device': job}}
         match_id = {'data': {'id': job}}
-        events = [
-            ('BLOCK_JOB_COMPLETED', match_device),
-            ('BLOCK_JOB_CANCELLED', match_device),
-            ('BLOCK_JOB_ERROR', match_device),
-            ('BLOCK_JOB_READY', match_device),
-            ('BLOCK_JOB_PENDING', match_id),
-            ('JOB_STATUS_CHANGE', match_id)
-        ]
+        events = {
+            'BLOCK_JOB_COMPLETED': match_device,
+            'BLOCK_JOB_CANCELLED': match_device,
+            'BLOCK_JOB_ERROR': match_device,
+            'BLOCK_JOB_READY': match_device,
+            'BLOCK_JOB_PENDING': match_id,
+            'JOB_STATUS_CHANGE': match_id,
+        }
         error = None
         while True:
             ev = filter_qmp_event(self.events_wait(events, timeout=wait))
-- 
2.21.1