[libvirt] [PATCH 13/23] Add a qemuMonitorGetMachines() method for QMP query-machines command
Daniel P. Berrange
berrange at redhat.com
Fri Sep 14 15:21:03 UTC 2012
From: "Daniel P. Berrange" <berrange at redhat.com>
Add a new qemuMonitorGetMachines() method to support invocation
of the 'query-machines' JSON monitor command. No HMP equivalent
is required, since this will only be present for QEMU >= 1.2
Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
---
src/qemu/qemu_monitor.c | 30 +++++++++++++
src/qemu/qemu_monitor.h | 15 +++++++
src/qemu/qemu_monitor_json.c | 101 +++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_monitor_json.h | 4 ++
tests/qemumonitorjsontest.c | 76 ++++++++++++++++++++++++++++++++
5 files changed, 226 insertions(+)
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index f2618ff..a2b2736 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -3025,3 +3025,33 @@ int qemuMonitorGetVersion(qemuMonitorPtr mon,
return qemuMonitorJSONGetVersion(mon, major, minor, micro, package);
}
+
+int qemuMonitorGetMachines(qemuMonitorPtr mon,
+ qemuMonitorMachineInfoPtr **machines)
+{
+ VIR_DEBUG("mon=%p machines=%p",
+ mon, machines);
+
+ 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 qemuMonitorJSONGetMachines(mon, machines);
+}
+
+void qemuMonitorMachineInfoFree(qemuMonitorMachineInfoPtr machine)
+{
+ if (!machine)
+ return;
+ VIR_FREE(machine->name);
+ VIR_FREE(machine->alias);
+ VIR_FREE(machine);
+}
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 018b067..e654d61 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -585,6 +585,21 @@ int qemuMonitorGetVersion(qemuMonitorPtr mon,
char **package)
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4);
+
+typedef struct _qemuMonitorMachineInfo qemuMonitorMachineInfo;
+typedef qemuMonitorMachineInfo *qemuMonitorMachineInfoPtr;
+
+struct _qemuMonitorMachineInfo {
+ char *name;
+ bool isDefault;
+ char *alias;
+};
+
+int qemuMonitorGetMachines(qemuMonitorPtr mon,
+ qemuMonitorMachineInfoPtr **machines);
+
+void qemuMonitorMachineInfoFree(qemuMonitorMachineInfoPtr machine);
+
/**
* When running two dd process and using <> redirection, we need a
* shell that will not truncate files. These two strings serve that
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 442e92c..279452c 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -3899,3 +3899,104 @@ cleanup:
virJSONValueFree(reply);
return ret;
}
+
+
+int qemuMonitorJSONGetMachines(qemuMonitorPtr mon,
+ qemuMonitorMachineInfoPtr **machines)
+{
+ int ret;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+ virJSONValuePtr data;
+ qemuMonitorMachineInfoPtr *infolist = NULL;
+ int n = 0;
+ size_t i;
+
+ *machines = NULL;
+
+ if (!(cmd = qemuMonitorJSONMakeCommand("query-machines", 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-machines reply was missing return data"));
+ goto cleanup;
+ }
+
+ if ((n = virJSONValueArraySize(data)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-machines reply data was not an array"));
+ goto cleanup;
+ }
+
+ if (VIR_ALLOC_N(infolist, n) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ for (i = 0 ; i < n ; i++) {
+ virJSONValuePtr child = virJSONValueArrayGet(data, i);
+ const char *tmp;
+ qemuMonitorMachineInfoPtr info;
+
+ if (VIR_ALLOC(info) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ infolist[i] = info;
+
+ if (!(tmp = virJSONValueObjectGetString(child, "name"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-machines reply data was missing 'name'"));
+ goto cleanup;
+ }
+
+ if (!(info->name = strdup(tmp))) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectHasKey(child, "is-default") &&
+ virJSONValueObjectGetBoolean(child, "is-default", &info->isDefault) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-machines reply has malformed 'is-default' data"));
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectHasKey(child, "alias")) {
+ if (!(tmp = virJSONValueObjectGetString(child, "alias"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-machines reply has malformed 'alias' data"));
+ goto cleanup;
+ }
+ if (!(info->alias = strdup(tmp))) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ }
+ }
+
+ ret = n;
+ *machines = infolist;
+
+cleanup:
+ if (ret < 0 && infolist) {
+ for (i = 0 ; i < n ; i++)
+ qemuMonitorMachineInfoFree(infolist[i]);
+ VIR_FREE(infolist);
+ }
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+ return ret;
+}
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index c2dfaf2..c09805d 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -290,4 +290,8 @@ int qemuMonitorJSONGetVersion(qemuMonitorPtr mon,
char **package)
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4);
+int qemuMonitorJSONGetMachines(qemuMonitorPtr mon,
+ qemuMonitorMachineInfoPtr **machines)
+ ATTRIBUTE_NONNULL(2);
+
#endif /* QEMU_MONITOR_JSON_H */
diff --git a/tests/qemumonitorjsontest.c b/tests/qemumonitorjsontest.c
index 21d5252..66f89fc 100644
--- a/tests/qemumonitorjsontest.c
+++ b/tests/qemumonitorjsontest.c
@@ -224,6 +224,81 @@ cleanup:
}
static int
+testQemuMonitorJSONGetMachines(const void *data)
+{
+ virCapsPtr caps = (virCapsPtr)data;
+ qemuMonitorTestPtr test = qemuMonitorTestNew(true, caps);
+ int ret = -1;
+ qemuMonitorMachineInfoPtr *info;
+ int ninfo;
+ const char *null = NULL;
+
+ if (!test)
+ return -1;
+
+ if (qemuMonitorTestAddItem(test, "query-machines",
+ "{ "
+ " \"return\": [ "
+ " { "
+ " \"name\": \"pc-1.0\" "
+ " }, "
+ " { "
+ " \"name\": \"pc-1.1\" "
+ " }, "
+ " { "
+ " \"name\": \"pc-1.2\", "
+ " \"is-default\": true, "
+ " \"alias\": \"pc\" "
+ " } "
+ " ]"
+ "}") < 0)
+ goto cleanup;
+
+ if ((ninfo = qemuMonitorGetMachines(qemuMonitorTestGetMonitor(test),
+ &info)) < 0)
+ goto cleanup;
+
+ if (ninfo != 3) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ "ninfo %d is not 3", ninfo);
+ goto cleanup;
+ }
+
+#define CHECK(i, wantname, wantisDefault, wantalias) \
+ do { \
+ if (STRNEQ(info[i]->name, (wantname))) { \
+ virReportError(VIR_ERR_INTERNAL_ERROR, \
+ "name %s is not %s", \
+ info[i]->name, (wantname)); \
+ goto cleanup; \
+ } \
+ if (info[i]->isDefault != (wantisDefault)) { \
+ virReportError(VIR_ERR_INTERNAL_ERROR, \
+ "isDefault %d is not %d", \
+ info[i]->isDefault, (wantisDefault)); \
+ goto cleanup; \
+ } \
+ if (STRNEQ_NULLABLE(info[i]->alias, (wantalias))) { \
+ virReportError(VIR_ERR_INTERNAL_ERROR, \
+ "alias %s is not %s", \
+ info[i]->alias, NULLSTR(wantalias)); \
+ goto cleanup; \
+ } \
+ } while (0)
+
+ CHECK(0, "pc-1.0", false, null);
+ CHECK(1, "pc-1.1", false, null);
+ CHECK(2, "pc-1.2", true, "pc");
+
+ ret = 0;
+
+cleanup:
+ qemuMonitorTestFree(test);
+ return ret;
+}
+
+
+static int
mymain(void)
{
int ret = 0;
@@ -243,6 +318,7 @@ mymain(void)
DO_TEST(GetStatus);
DO_TEST(GetVersion);
+ DO_TEST(GetMachines);
virCapabilitiesFree(caps);
--
1.7.11.4
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