[libvirt] [libvirt-glib PATCHv4 5/7] gobject: Add API to query connection networks
Christophe Fergeau
cfergeau at redhat.com
Tue Jul 7 09:00:45 UTC 2015
On Wed, Jul 01, 2015 at 09:40:49PM +0100, Zeeshan Ali (Khattak) wrote:
> Add API to query networks from a connection.
> ---
> libvirt-gobject/libvirt-gobject-connection.c | 257 +++++++++++++++++++++++++++
> libvirt-gobject/libvirt-gobject-connection.h | 13 +-
> libvirt-gobject/libvirt-gobject.sym | 6 +
> 3 files changed, 274 insertions(+), 2 deletions(-)
>
> diff --git a/libvirt-gobject/libvirt-gobject-connection.c b/libvirt-gobject/libvirt-gobject-connection.c
> index 47b6861..a055a86 100644
> --- a/libvirt-gobject/libvirt-gobject-connection.c
> +++ b/libvirt-gobject/libvirt-gobject-connection.c
> @@ -45,6 +45,7 @@ struct _GVirConnectionPrivate
> GHashTable *domains;
> GHashTable *pools;
> GHashTable *interfaces;
> + GHashTable *networks;
> };
>
> G_DEFINE_TYPE(GVirConnection, gvir_connection, G_TYPE_OBJECT);
> @@ -257,6 +258,10 @@ static void gvir_connection_init(GVirConnection *conn)
> g_str_equal,
> NULL,
> g_object_unref);
> + priv->networks = g_hash_table_new_full(g_str_hash,
> + g_str_equal,
> + NULL,
> + g_object_unref);
> }
>
>
> @@ -672,6 +677,11 @@ void gvir_connection_close(GVirConnection *conn)
> priv->interfaces = NULL;
> }
>
> + if (priv->networks) {
> + g_hash_table_unref(priv->networks);
> + priv->networks = NULL;
> + }
> +
> if (priv->conn) {
> virConnectDomainEventDeregister(priv->conn, domain_event_cb);
> virConnectClose(priv->conn);
> @@ -1696,6 +1706,253 @@ GVirInterface *gvir_connection_find_interface_by_mac(GVirConnection *conn,
> }
>
> /**
> + * gvir_connection_fetch_networks:
> + * @conn: a #GVirConnection
> + * @cancellable: (allow-none)(transfer none): cancellation object
> + */
> +gboolean gvir_connection_fetch_networks(GVirConnection *conn,
> + GCancellable *cancellable,
> + GError **err)
> +{
> + GVirConnectionPrivate *priv;
> + GHashTable *networks;
> + virNetworkPtr *vnetworks = NULL;
> + gint nnetworks = 0;
> + gboolean ret = FALSE;
> + gint i;
> + virConnectPtr vconn = NULL;
> +
> + g_return_val_if_fail(GVIR_IS_CONNECTION(conn), FALSE);
> + g_return_val_if_fail((cancellable == NULL) || G_IS_CANCELLABLE(cancellable),
> + FALSE);
> + g_return_val_if_fail((err == NULL) || (*err == NULL), FALSE);
> +
> + priv = conn->priv;
> + g_mutex_lock(priv->lock);
> + if (!priv->conn) {
> + g_set_error_literal(err, GVIR_CONNECTION_ERROR,
> + 0,
> + _("Connection is not open"));
> + g_mutex_unlock(priv->lock);
> + goto cleanup;
> + }
> + vconn = priv->conn;
> + /* Stop another thread closing the connection just at the minute */
> + virConnectRef(vconn);
> + g_mutex_unlock(priv->lock);
> +
> + if (g_cancellable_set_error_if_cancelled(cancellable, err))
> + goto cleanup;
> +
> + nnetworks = virConnectListAllNetworks(vconn, &vnetworks, 0);
> + if (nnetworks < 0) {
> + gvir_set_error(err, GVIR_CONNECTION_ERROR,
> + 0,
> + _("Failed to fetch list of networks"));
> + goto cleanup;
> + }
> +
> + if (g_cancellable_set_error_if_cancelled(cancellable, err))
> + goto cleanup;
> +
> + networks = g_hash_table_new_full(g_str_hash,
> + g_str_equal,
> + NULL,
> + g_object_unref);
> +
> + for (i = 0 ; i < nnetworks; i++) {
> + if (g_cancellable_set_error_if_cancelled(cancellable, err))
> + goto cleanup;
> +
> + GVirNetwork *network;
> +
> + network = GVIR_NETWORK(g_object_new(GVIR_TYPE_NETWORK,
> + "handle", vnetworks[i],
> + NULL));
> + g_hash_table_insert(networks,
> + (gpointer)gvir_network_get_uuid(network),
> + network);
> + }
> +
> + g_mutex_lock(priv->lock);
> + if (priv->networks)
> + g_hash_table_unref(priv->networks);
> + priv->networks = networks;
> + g_mutex_unlock(priv->lock);
> +
> + ret = TRUE;
> +
> +cleanup:
> + if (nnetworks > 0) {
> + for (i = 0 ; i < nnetworks; i++)
> + virNetworkFree(vnetworks[i]);
> + free(vnetworks);
> + }
> + if (vconn != NULL)
> + virConnectClose(vconn);
> + return ret;
> +}
> +
> +static void
> +gvir_connection_fetch_networks_helper(GTask *res,
> + gpointer object,
> + gpointer task_data G_GNUC_UNUSED,
> + GCancellable *cancellable)
> +{
> + GVirConnection *conn = GVIR_CONNECTION(object);
> + GError *err = NULL;
> +
> + if (!gvir_connection_fetch_networks(conn, cancellable, &err))
> + g_task_return_error(res, err);
> + else
> + g_task_return_boolean(res, TRUE);
> +}
> +
> +/**
> + * gvir_connection_fetch_networks_async:
> + * @conn: a #GVirConnection
> + * @cancellable: (allow-none)(transfer none): cancellation object
> + * @callback: (scope async): completion callback
> + * @user_data: (closure): opaque data for callback
> + */
> +void gvir_connection_fetch_networks_async(GVirConnection *conn,
> + GCancellable *cancellable,
> + GAsyncReadyCallback callback,
> + gpointer user_data)
> +{
> + GTask *res;
> +
> + g_return_if_fail(GVIR_IS_CONNECTION(conn));
> + g_return_if_fail((cancellable == NULL) || G_IS_CANCELLABLE(cancellable));
> +
> + res = g_task_new(G_OBJECT(conn),
> + cancellable,
> + callback,
> + user_data);
> + g_task_set_source_tag(res,
> + gvir_connection_fetch_networks_async);
> + g_task_run_in_thread(res,
> + gvir_connection_fetch_networks_helper);
> + g_object_unref(res);
> +}
> +
> +/**
> + * gvir_connection_fetch_networks_finish:
> + * @conn: a #GVirConnection
> + * @result: (transfer none): async method result
> + * @err: return location for any errors
> + */
> +gboolean gvir_connection_fetch_networks_finish(GVirConnection *conn,
> + GAsyncResult *result,
> + GError **err)
> +{
> + g_return_val_if_fail(GVIR_IS_CONNECTION(conn), FALSE);
> + g_return_val_if_fail(g_task_is_valid(result, G_OBJECT(conn)),
> + FALSE);
> +
> + return g_task_propagate_boolean(G_TASK(result), err);
> +}
> +
> +/**
> + * gvir_connection_get_networks:
> + * @conn: a #GVirConnection
> + *
> + * Gets a list of all the network networks available through @conn.
> + *
> + * Return value: (element-type LibvirtGObject.Network) (transfer full): List
> + * of #GVirNetwork. The returned list should be freed with g_list_free(),
> + * after its elements have been unreffed with g_object_unref().
> + */
> +GList *gvir_connection_get_networks(GVirConnection *conn)
> +{
> + GVirConnectionPrivate *priv;
> + GList *networks = NULL;
> +
> + g_return_val_if_fail(GVIR_IS_CONNECTION(conn), NULL);
> +
> + priv = conn->priv;
> + g_mutex_lock(priv->lock);
> + if (priv->networks != NULL) {
> + networks = g_hash_table_get_values(priv->networks);
> + g_list_foreach(networks, gvir_domain_ref, NULL);
> + }
> + g_mutex_unlock(priv->lock);
> +
> + return networks;
> +}
> +
> +/**
> + * gvir_connection_get_network:
> + * @conn: a #GVirConnection
+ * @uuid: UUID of the network to lookup
> + *
> + * Get a particular network which has UUID @uuid.
> + *
> + * Return value: (transfer full): A new reference to a #GVirNetwork, or NULL if
> + * no network exists with UUID @uuid. The returned object must be unreffed using
> + * g_object_unref() once used.
> + */
> +GVirNetwork *gvir_connection_get_network(GVirConnection *conn,
> + const gchar *uuid)
> +{
> + GVirConnectionPrivate *priv;
> + GVirNetwork *network;
> +
> + g_return_val_if_fail(GVIR_IS_CONNECTION(conn), NULL);
> + g_return_val_if_fail(uuid != NULL, NULL);
> +
> + priv = conn->priv;
> + g_mutex_lock(priv->lock);
> + network = g_hash_table_lookup(priv->networks, uuid);
> + if (network)
> + g_object_ref(network);
> + g_mutex_unlock(priv->lock);
> +
> + return network;
> +}
> +
> +/**
> + * gvir_connection_find_network_by_name:
> + * @conn: a #GVirConnection
+ * @name: name of the network to search for
Same minor comments as in the previous patch apply here, looks all good
otherwise.
Christophe
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