/* Interaction with cloud storage. We expose very simple GET/PUT style
* interface, which different backends can implement. Available backends
- * (will) include Amazon S3 and a simple local store for testing purposes. */
+ * (will) include Amazon S3 and a simple local store for testing purposes.
+ * Operations may be performed asynchronously. */
struct _BlueSkyStore {
const BlueSkyStoreImplementation *impl;
g_free(store);
}
+BlueSkyStoreAsync *bluesky_store_async_new(BlueSkyStore *store)
+{
+ BlueSkyStoreAsync *async;
+
+ async = g_new(BlueSkyStoreAsync, 1);
+ async->store = store;
+ async->lock = g_mutex_new();
+ async->completion_cond = g_cond_new();
+ async->status = ASYNC_NEW;
+ async->op = STORE_OP_NONE;
+ async->key = NULL;
+ async->data = NULL;
+ async->result = -1;
+ async->store_private = NULL;
+
+ return async;
+}
+
+/* Block until the given operation has completed. */
+void bluesky_store_async_wait(BlueSkyStoreAsync *async)
+{
+ g_return_if_fail(async != NULL);
+ g_mutex_lock(async->lock);
+
+ if (async->status == ASYNC_NEW) {
+ g_error("bluesky_store_async_wait on a new async object!\n");
+ g_mutex_unlock(async->lock);
+ return;
+ }
+
+ while (async->status != ASYNC_COMPLETE) {
+ g_cond_wait(async->completion_cond, async->lock);
+ }
+}
+
+/* Mark an asynchronous operation as complete. This should only be called by
+ * the store implementations. The lock must be held when calling this
+ * function. */
+void bluesky_store_async_mark_complete(BlueSkyStoreAsync *async)
+{
+ async->status = ASYNC_COMPLETE;
+ g_cond_broadcast(async->completion_cond);
+}
+
+/* Convenience wrappers that perform a single operation synchronously. */
BlueSkyRCStr *bluesky_store_get(BlueSkyStore *store, const gchar *key)
{
- return store->impl->get(store->handle, key);
+ BlueSkyStoreAsync *async = bluesky_store_async_new(store);
+ async->op = STORE_OP_GET;
+ async->key = g_strdup(key);
+ store->impl->submit(store->handle, async);
+
+ bluesky_store_async_wait(async);
+
+ BlueSkyRCStr *data = async->data;
+ bluesky_string_ref(data);
+ return data;
}
void bluesky_store_put(BlueSkyStore *store,
const gchar *key, BlueSkyRCStr *val)
{
- store->impl->put(store->handle, key, val);
+ BlueSkyStoreAsync *async = bluesky_store_async_new(store);
+ async->op = STORE_OP_PUT;
+ async->key = g_strdup(key);
+ bluesky_string_ref(val);
+ async->data = val;
+ store->impl->submit(store->handle, async);
+
+ bluesky_store_async_wait(async);
}
+#if 0
/* Simple in-memory data store for test purposes. */
typedef struct {
GMutex *lock;
.get = filestore_get,
.put = filestore_put,
};
+#endif
void bluesky_store_init()
{
store_implementations = g_hash_table_new(g_str_hash, g_str_equal);
- bluesky_store_register(&memstore_impl, "mem");
- bluesky_store_register(&filestore_impl, "file");
+ //bluesky_store_register(&memstore_impl, "mem");
+ //bluesky_store_register(&filestore_impl, "file");
}