1 files changed, 111 insertions, 0 deletions
diff --git a/plugins/alsa/alsa-transaction.c b/plugins/alsa/alsa-transaction.c
new file mode 100644
index 0000000..bd32603
--- /dev/null
+++ b/plugins/alsa/alsa-transaction.c
@@ -0,0 +1,111 @@
+#include <malloc.h>
+#include <string.h>
+
+#include "alsa-softmixer.h"
+#include "alsa-transaction.h"
+#include "wrap-json.h"
+
+AlsaMixerTransaction * AlsaMixerTransactionNew(struct SoftMixerT_ * mixer, const char * uid) {
+	AlsaMixerTransaction * newList = (AlsaMixerTransaction *) malloc(sizeof(AlsaMixerTransaction));
+	if (newList == NULL)
+		goto fail;
+
+	CDS_INIT_LIST_HEAD(&newList->list);
+	newList->uid = strdup(uid);
+	if (newList->uid == NULL) {
+		goto fail_list;
+	}
+
+	newList->mixer = mixer;
+
+	return newList;
+
+fail_list:
+	free(newList);
+fail:
+	return NULL;
+}
+
+void AlsaMixerTransactionDataListDestroy(AlsaMixerTransaction* list) {
+	free(list);
+}
+
+bool AlsaMixerTransactionObjectAdd(AlsaMixerTransaction* list, void* object, AlsaTransactionDestructor destructor) {
+	bool ret = false;
+	AlsaMixerTransactionDataItem * newItem = NULL;
+	if (!list)
+		goto fail;
+
+	newItem = (AlsaMixerTransactionDataItem *) malloc(sizeof(AlsaMixerTransactionDataItem));
+	if (newItem == NULL)
+		goto fail;
+
+	CDS_INIT_LIST_HEAD(&newItem->list_entry);
+	newItem->object = object;
+	newItem->destructor = destructor;
+	cds_list_add(&newItem->list_entry, &list->list);
+
+	ret = true;
+fail:
+	return ret;
+
+}
+
+void AlsaMixerTransactionDoCleanup(AlsaMixerTransaction* transaction) {
+	AlsaMixerTransactionDataItem * item, *sav;
+
+	cds_list_for_each_entry_safe(item, sav, &transaction->list, list_entry) {
+		if (item->destructor)
+			item->destructor(transaction->mixer, item->object);
+
+		cds_list_del(&item->list_entry);
+		free(item);
+	}
+}
+
+void AlsaMixerTransactionVerbCB(AFB_ReqT request) {
+	json_object *responseJ = NULL;
+	AlsaMixerTransaction *transaction = (AlsaMixerTransaction*) afb_req_get_vcbdata(request);
+	json_object *argsJ = afb_req_json(request);
+	int error;
+	char * action = NULL;
+	const char * uid;
+
+	error = wrap_json_unpack(argsJ, "{ss!}",
+			"action", &action);
+
+	if (error) {
+		AFB_ReqFailF(request, "missing action", "%s: missing 'action' field: %s", transaction->uid, json_object_get_string(argsJ));
+		goto OnErrorExit;
+	}
+
+	uid = strdup(transaction->uid);
+	if (!uid) {
+		SOFTMIXER_NOMEM(transaction->mixer->api);
+		goto OnErrorExit;
+	}
+
+	if (strcmp(action, "remove") == 0) {
+		AlsaMixerTransactionDoCleanup(transaction);
+		error = afb_api_del_verb(transaction->mixer->api, transaction->uid, (void**)transaction);
+		if (error) {
+			AFB_ReqFail(request, "verb deletion" , "verb was not removed");
+			goto OnErrorExit;
+		}
+
+	} else {
+		AFB_ReqFailF(request, "unsupported action", "%s: unsupported action %s (supported ones are ['remove']", transaction->uid, action);
+		goto OnErrorExit;
+	}
+
+	responseJ=json_object_new_object();
+	json_object_object_add(responseJ, "result", json_object_new_string("OK"));
+	AFB_ReqSuccess(request, responseJ, uid);
+
+	free((char*)uid);
+	return;
+
+OnErrorExit:
+	return;
+
+}