From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
Add a new qemuMonitorGetEvents() method to support invocation
of the 'query-events' JSON monitor command. No HMP equivalent
is required, since this will only be used when JSON is available
The existing qemuMonitorJSONCheckEvents() method is refactored
to use this new method
Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
---
src/qemu/qemu_monitor.c | 22 ++++++++
src/qemu/qemu_monitor.h | 2 +
src/qemu/qemu_monitor_json.c | 119 ++++++++++++++++++++++++++++++-------------
src/qemu/qemu_monitor_json.h | 3 ++
4 files changed, 110 insertions(+), 36 deletions(-)
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 0dba842..d237c89 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -3098,3 +3098,25 @@ int qemuMonitorGetCommands(qemuMonitorPtr mon,
return qemuMonitorJSONGetCommands(mon, commands);
}
+
+
+int qemuMonitorGetEvents(qemuMonitorPtr mon,
+ char ***events)
+{
+ VIR_DEBUG("mon=%p events=%p",
+ mon, events);
+
+ if (!mon) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("monitor must not be NULL"));
+ return -1;
+ }
+
+ if (!mon->json) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("JSON monitor is required"));
+ return -1;
+ }
+
+ return qemuMonitorJSONGetEvents(mon, events);
+}
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 9b3ac17..de1097f 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -605,6 +605,8 @@ int qemuMonitorGetCPUDefinitions(qemuMonitorPtr mon,
int qemuMonitorGetCommands(qemuMonitorPtr mon,
char ***commands);
+int qemuMonitorGetEvents(qemuMonitorPtr mon,
+ char ***events);
/**
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 516bb8a..7c6b759 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -1007,49 +1007,23 @@ int
qemuMonitorJSONCheckEvents(qemuMonitorPtr mon,
qemuCapsPtr caps)
{
- int ret = -1;
- virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-events", NULL);
- virJSONValuePtr reply = NULL;
- virJSONValuePtr data;
- int i, n;
-
- if (!cmd)
- return ret;
-
- if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
- goto cleanup;
-
- if (qemuMonitorJSONHasError(reply, "CommandNotFound")) {
- ret = 0;
- goto cleanup;
- }
-
- if (qemuMonitorJSONCheckError(cmd, reply) < 0)
- goto cleanup;
-
- if (!(data = virJSONValueObjectGet(reply, "return")) ||
- data->type != VIR_JSON_TYPE_ARRAY ||
- (n = virJSONValueArraySize(data)) <= 0)
- goto cleanup;
+ char **events = NULL;
+ int nevents;
+ size_t i;
- for (i = 0; i < n; i++) {
- virJSONValuePtr entry;
- const char *name;
+ if ((nevents = qemuMonitorJSONGetEvents(mon, &events)) < 0)
+ return -1;
- if (!(entry = virJSONValueArrayGet(data, i)) ||
- !(name = virJSONValueObjectGetString(entry, "name")))
- goto cleanup;
+ for (i = 0 ; i < nevents ; i++) {
+ char *name = events[i];
if (STREQ(name, "BALLOON_CHANGE"))
qemuCapsSet(caps, QEMU_CAPS_BALLOON_EVENT);
+ VIR_FREE(name);
}
+ VIR_FREE(events);
- ret = 0;
-
-cleanup:
- virJSONValueFree(cmd);
- virJSONValueFree(reply);
- return ret;
+ return 0;
}
@@ -4129,3 +4103,76 @@ cleanup:
return ret;
}
+
+int qemuMonitorJSONGetEvents(qemuMonitorPtr mon,
+ char ***events)
+{
+ int ret;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+ virJSONValuePtr data;
+ char **eventlist = NULL;
+ int n = 0;
+ size_t i;
+
+ *events = NULL;
+
+ if (!(cmd = qemuMonitorJSONMakeCommand("query-events", NULL)))
+ return -1;
+
+ ret = qemuMonitorJSONCommand(mon, cmd, &reply);
+
+ if (ret == 0)
+ ret = qemuMonitorJSONCheckError(cmd, reply);
+
+ if (ret < 0)
+ goto cleanup;
+
+ ret = -1;
+
+ if (!(data = virJSONValueObjectGet(reply, "return"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-events reply was missing return data"));
+ goto cleanup;
+ }
+
+ if ((n = virJSONValueArraySize(data)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-events reply data was not an array"));
+ goto cleanup;
+ }
+
+ if (VIR_ALLOC_N(eventlist, n) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ for (i = 0 ; i < n ; i++) {
+ virJSONValuePtr child = virJSONValueArrayGet(data, i);
+ const char *tmp;
+
+ if (!(tmp = virJSONValueObjectGetString(child, "name"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-events reply data was missing 'name'"));
+ goto cleanup;
+ }
+
+ if (!(eventlist[i] = strdup(tmp))) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ }
+
+ ret = n;
+ *events = eventlist;
+
+cleanup:
+ if (ret < 0 && eventlist) {
+ for (i = 0 ; i < n ; i++)
+ VIR_FREE(eventlist[i]);
+ VIR_FREE(eventlist);
+ }
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+ return ret;
+}
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index 0cbeaf8..dc815a5 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -301,5 +301,8 @@ int qemuMonitorJSONGetCPUDefinitions(qemuMonitorPtr mon,
int qemuMonitorJSONGetCommands(qemuMonitorPtr mon,
char ***commands)
ATTRIBUTE_NONNULL(2);
+int qemuMonitorJSONGetEvents(qemuMonitorPtr mon,
+ char ***events)
+ ATTRIBUTE_NONNULL(2);
#endif /* QEMU_MONITOR_JSON_H */
--
1.7.11.4
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