[libvirt] [PATCH 3/5] conf: implementing some functions to generate volume events.
Julio Faracco
jcfaracco at gmail.com
Sun May 27 19:25:37 UTC 2018
This commit defines some functions to create new events for volumes
according the events available for volumes.
Signed-off-by: Julio Faracco <jcfaracco at gmail.com>
---
src/conf/storage_event.c | 155 +++++++++++++++++++++++++++++++++++++++
src/conf/storage_event.h | 19 +++++
src/libvirt_private.syms | 2 +
3 files changed, 176 insertions(+)
diff --git a/src/conf/storage_event.c b/src/conf/storage_event.c
index 32a12eb63f..8d77b2a6cb 100644
--- a/src/conf/storage_event.c
+++ b/src/conf/storage_event.c
@@ -56,6 +56,24 @@ struct _virStoragePoolEventRefresh {
typedef struct _virStoragePoolEventRefresh virStoragePoolEventRefresh;
typedef virStoragePoolEventRefresh *virStoragePoolEventRefreshPtr;
+struct _virStorageVolEvent {
+ virObjectEvent parent;
+
+ /* Unused attribute to allow for subclass creation */
+ bool dummy;
+};
+typedef struct _virStorageVolEvent virStorageVolEvent;
+typedef virStorageVolEvent *virStorageVolEventPtr;
+
+struct _virStorageVolEventLifecycle {
+ virStorageVolEvent parent;
+
+ int type;
+ int detail;
+};
+typedef struct _virStorageVolEventLifecycle virStorageVolEventLifecycle;
+typedef virStorageVolEventLifecycle *virStorageVolEventLifecyclePtr;
+
static virClassPtr virStoragePoolEventClass;
static virClassPtr virStoragePoolEventLifecycleClass;
static virClassPtr virStoragePoolEventRefreshClass;
@@ -63,6 +81,11 @@ static void virStoragePoolEventDispose(void *obj);
static void virStoragePoolEventLifecycleDispose(void *obj);
static void virStoragePoolEventRefreshDispose(void *obj);
+static virClassPtr virStorageVolEventClass;
+static virClassPtr virStorageVolEventLifecycleClass;
+static void virStorageVolEventDispose(void *obj);
+static void virStorageVolEventLifecycleDispose(void *obj);
+
static int
virStoragePoolEventsOnceInit(void)
{
@@ -78,7 +101,20 @@ virStoragePoolEventsOnceInit(void)
return 0;
}
+static int
+virStorageVolEventsOnceInit(void)
+{
+ if (!VIR_CLASS_NEW(virStorageVolEvent, virClassForObjectEvent()))
+ return -1;
+
+ if (!VIR_CLASS_NEW(virStorageVolEventLifecycle, virStorageVolEventClass))
+ return -1;
+
+ return 0;
+}
+
VIR_ONCE_GLOBAL_INIT(virStoragePoolEvents)
+VIR_ONCE_GLOBAL_INIT(virStorageVolEvents)
static void
virStoragePoolEventDispose(void *obj)
@@ -103,6 +139,20 @@ virStoragePoolEventRefreshDispose(void *obj)
VIR_DEBUG("obj=%p", event);
}
+static void
+virStorageVolEventDispose(void *obj)
+{
+ virStorageVolEventPtr event = obj;
+ VIR_DEBUG("obj=%p", event);
+}
+
+
+static void
+virStorageVolEventLifecycleDispose(void *obj)
+{
+ virStorageVolEventLifecyclePtr event = obj;
+ VIR_DEBUG("obj=%p", event);
+}
static void
virStoragePoolEventDispatchDefaultFunc(virConnectPtr conn,
@@ -147,6 +197,40 @@ virStoragePoolEventDispatchDefaultFunc(virConnectPtr conn,
}
+static void
+virStorageVolEventDispatchDefaultFunc(virConnectPtr conn,
+ virObjectEventPtr event,
+ virConnectObjectEventGenericCallback cb ATTRIBUTE_UNUSED,
+ void *cbopaque ATTRIBUTE_UNUSED)
+{
+ virStorageVolPtr vol = virStorageVolLookupByKey(conn,
+ event->meta.key);
+ if (!vol)
+ return;
+
+ switch ((virStorageVolEventID)event->eventID) {
+ case VIR_STORAGE_VOL_EVENT_ID_LIFECYCLE:
+ {
+ virStorageVolEventLifecyclePtr storageVolLifecycleEvent;
+
+ storageVolLifecycleEvent = (virStorageVolEventLifecyclePtr)event;
+ ((virConnectStorageVolEventLifecycleCallback)cb)(conn, vol,
+ storageVolLifecycleEvent->type,
+ storageVolLifecycleEvent->detail,
+ cbopaque);
+ goto cleanup;
+ }
+
+ case VIR_STORAGE_VOL_EVENT_ID_LAST:
+ break;
+ }
+ VIR_WARN("Unexpected event ID %d", event->eventID);
+
+ cleanup:
+ virObjectUnref(vol);
+}
+
+
/**
* virStoragePoolEventStateRegisterID:
* @conn: connection to associate with callback
@@ -189,6 +273,44 @@ virStoragePoolEventStateRegisterID(virConnectPtr conn,
false, callbackID, false);
}
+/**
+ * virStorageVolEventStateRegisterID:
+ * @conn: connection to associate with callback
+ * @state: object event state
+ * @vol: storage vol to filter on or NULL for all storage volumes
+ * @eventID: ID of the event type to register for
+ * @cb: function to invoke when event occurs
+ * @opaque: data blob to pass to @callback
+ * @freecb: callback to free @opaque
+ * @callbackID: filled with callback ID
+ *
+ * Register the function @cb with connection @conn, from @state, for
+ * events of type @eventID, and return the registration handle in
+ * @callbackID.
+ *
+ * Returns: the number of callbacks now registered, or -1 on error
+ */
+int
+virStorageVolEventStateRegisterID(virConnectPtr conn,
+ virObjectEventStatePtr state,
+ virStorageVolPtr vol,
+ int eventID,
+ virConnectStorageVolEventGenericCallback cb,
+ void *opaque,
+ virFreeCallback freecb,
+ int *callbackID)
+{
+ if (virStorageVolEventsInitialize() < 0)
+ return -1;
+
+ return virObjectEventStateRegisterID(conn, state, vol ? vol->key : NULL,
+ NULL, NULL,
+ virStorageVolEventClass, eventID,
+ VIR_OBJECT_EVENT_CALLBACK(cb),
+ opaque, freecb,
+ false, callbackID, false);
+}
+
/**
* virStoragePoolEventStateRegisterClient:
@@ -268,6 +390,39 @@ virStoragePoolEventLifecycleNew(const char *name,
return (virObjectEventPtr)event;
}
+/**
+ * virStorageVolEventLifecycleNew:
+ * @name: name of the storage volume object the event describes
+ * @key: key of the storage volume object the event describes
+ * @type: type of lifecycle event
+ * @detail: more details about @type
+ *
+ * Create a new storage volume lifecycle event.
+ */
+virObjectEventPtr
+virStorageVolEventLifecycleNew(const char *pool,
+ const char *name,
+ const unsigned char *key,
+ int type,
+ int detail)
+{
+ virStorageVolEventLifecyclePtr event;
+
+ if (virStorageVolEventsInitialize() < 0)
+ return NULL;
+
+ if (!(event = virObjectEventNew(virStorageVolEventLifecycleClass,
+ virStorageVolEventDispatchDefaultFunc,
+ VIR_STORAGE_VOL_EVENT_ID_LIFECYCLE,
+ 0, name, key, pool)))
+ return NULL;
+
+ event->type = type;
+ event->detail = detail;
+
+ return (virObjectEventPtr)event;
+}
+
/**
* virStoragePoolEventRefreshNew:
diff --git a/src/conf/storage_event.h b/src/conf/storage_event.h
index ea726911fa..59adf622d7 100644
--- a/src/conf/storage_event.h
+++ b/src/conf/storage_event.h
@@ -39,6 +39,18 @@ virStoragePoolEventStateRegisterID(virConnectPtr conn,
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5)
ATTRIBUTE_NONNULL(8);
+int
+virStorageVolEventStateRegisterID(virConnectPtr conn,
+ virObjectEventStatePtr state,
+ virStorageVolPtr vol,
+ int eventID,
+ virConnectStorageVolEventGenericCallback cb,
+ void *opaque,
+ virFreeCallback freecb,
+ int *callbackID)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5)
+ ATTRIBUTE_NONNULL(8);
+
int
virStoragePoolEventStateRegisterClient(virConnectPtr conn,
virObjectEventStatePtr state,
@@ -61,4 +73,11 @@ virObjectEventPtr
virStoragePoolEventRefreshNew(const char *name,
const unsigned char *uuid);
+virObjectEventPtr
+virStorageVolEventLifecycleNew(const char *pool,
+ const char *name,
+ const unsigned char *key,
+ int type,
+ int detail);
+
#endif
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index a97b7fe223..4e62a02c02 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -940,6 +940,8 @@ virStorageVolTypeToString;
virStoragePoolEventLifecycleNew;
virStoragePoolEventRefreshNew;
virStoragePoolEventStateRegisterID;
+virStorageVolEventLifecycleNew;
+virStorageVolEventStateRegisterID;
# conf/virchrdev.h
--
2.17.0
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