[PATCH v3 09/11] test_driver: Implement virConnectGetAllDomainStats

[Luke Yue]

Implement virConnectGetAllDomainStats in a modular way just like QEMU
driver, though remove some params in GetStatsWorker that we don't need
in test driver currently.

Only add the worker to get state so far, more worker will be added
in the future.

Signed-off-by: Luke Yue <lukedyue at gmail.com>
---
 src/test/test_driver.c | 135 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)

diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index 1d439a89b6..6eebd85cf3 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -9785,6 +9785,140 @@ testDomainSetIOThreadParams(virDomainPtr dom,
     return ret;
 }
 
+static int
+testDomainGetStatsState(virDomainObj *dom,
+                        virTypedParamList *params)
+{
+    if (virTypedParamListAddInt(params, dom->state.state, "state.state") < 0)
+        return -1;
+
+    if (virTypedParamListAddInt(params, dom->state.reason, "state.reason") < 0)
+        return -1;
+
+    return 0;
+}
+
+typedef int
+(*testDomainGetStatsFunc)(virDomainObj *dom,
+                          virTypedParamList *list);
+
+struct testDomainGetStatsWorker {
+    testDomainGetStatsFunc func;
+    unsigned int stats;
+};
+
+static struct testDomainGetStatsWorker testDomainGetStatsWorkers[] = {
+    { testDomainGetStatsState, VIR_DOMAIN_STATS_STATE },
+    { NULL, 0 }
+};
+
+static int
+testDomainGetStats(virConnectPtr conn,
+                   virDomainObj *dom,
+                   unsigned int stats,
+                   virDomainStatsRecordPtr *record)
+{
+    g_autofree virDomainStatsRecordPtr tmp = NULL;
+    g_autoptr(virTypedParamList) params = NULL;
+    size_t i;
+
+    params = g_new0(virTypedParamList, 1);
+
+    for (i = 0; testDomainGetStatsWorkers[i].func; i++) {
+        if (stats & testDomainGetStatsWorkers[i].stats) {
+            if (testDomainGetStatsWorkers[i].func(dom, params) < 0)
+                return -1;
+        }
+    }
+
+    tmp = g_new0(virDomainStatsRecord, 1);
+
+    if (!(tmp->dom = virGetDomain(conn, dom->def->name,
+                                  dom->def->uuid, dom->def->id)))
+        return -1;
+
+    tmp->nparams = virTypedParamListStealParams(params, &tmp->params);
+    *record = g_steal_pointer(&tmp);
+    return 0;
+}
+
+static int
+testConnectGetAllDomainStats(virConnectPtr conn,
+                             virDomainPtr *doms,
+                             unsigned int ndoms,
+                             unsigned int stats,
+                             virDomainStatsRecordPtr **retStats,
+                             unsigned int flags)
+{
+    testDriver *driver = conn->privateData;
+    unsigned int lflags = flags & (VIR_CONNECT_LIST_DOMAINS_FILTERS_ACTIVE |
+                                   VIR_CONNECT_LIST_DOMAINS_FILTERS_PERSISTENT |
+                                   VIR_CONNECT_LIST_DOMAINS_FILTERS_STATE);
+
+    unsigned int supported = VIR_DOMAIN_STATS_STATE;
+    virDomainObj **vms = NULL;
+    size_t nvms;
+    virDomainStatsRecordPtr *tmpstats = NULL;
+    int nstats = 0;
+    int ret = -1;
+    size_t i;
+
+    virCheckFlags(VIR_CONNECT_LIST_DOMAINS_FILTERS_ACTIVE |
+                  VIR_CONNECT_LIST_DOMAINS_FILTERS_PERSISTENT |
+                  VIR_CONNECT_LIST_DOMAINS_FILTERS_STATE |
+                  VIR_CONNECT_GET_ALL_DOMAINS_STATS_NOWAIT |
+                  VIR_CONNECT_GET_ALL_DOMAINS_STATS_BACKING |
+                  VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS, -1);
+
+    if (!stats) {
+        stats = supported;
+    } else if ((flags & VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS) &&
+               (stats & ~supported)) {
+        virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED,
+                       _("Stats types bits 0x%x are not supported by this daemon"),
+                       stats & ~supported);
+        return -1;
+    }
+
+    if (ndoms) {
+        if (virDomainObjListConvert(driver->domains, conn, doms, ndoms, &vms,
+                                    &nvms, NULL, lflags, true) < 0)
+            return -1;
+    } else {
+        if (virDomainObjListCollect(driver->domains, conn, &vms, &nvms,
+                                    NULL, lflags) < 0)
+            return -1;
+    }
+
+    tmpstats = g_new0(virDomainStatsRecordPtr, nvms + 1);
+
+    for (i = 0; i < nvms; i++) {
+        virDomainStatsRecordPtr tmp = NULL;
+        virDomainObj *vm = vms[i];
+
+        virObjectLock(vm);
+
+        if ((testDomainGetStats(conn, vm, stats, &tmp)) < 0)
+            goto cleanup;
+
+        virObjectUnlock(vm);
+
+        if (!tmp)
+            goto cleanup;
+
+        tmpstats[nstats++] = tmp;
+    }
+
+    *retStats = g_steal_pointer(&tmpstats);
+    ret = nstats;
+
+ cleanup:
+    virDomainStatsRecordListFree(tmpstats);
+    virObjectListFreeCount(vms, nvms);
+
+    return ret;
+}
+
 /*
  * Test driver
  */
@@ -9799,6 +9933,7 @@ static virHypervisorDriver testHypervisorDriver = {
     .nodeGetCPUStats = testNodeGetCPUStats, /* 2.3.0 */
     .nodeGetFreeMemory = testNodeGetFreeMemory, /* 2.3.0 */
     .nodeGetFreePages = testNodeGetFreePages, /* 2.3.0 */
+    .connectGetAllDomainStats = testConnectGetAllDomainStats, /* 7.7.0 */
     .connectGetCapabilities = testConnectGetCapabilities, /* 0.2.1 */
     .connectGetSysinfo = testConnectGetSysinfo, /* 2.3.0 */
     .connectGetType = testConnectGetType, /* 2.3.0 */
-- 
2.32.0