* (will) include Amazon S3 and a simple local store for testing purposes.
* Operations may be performed asynchronously. */
-struct _BlueSkyStore {
+struct BlueSkyStore {
const BlueSkyStoreImplementation *impl;
gpointer handle;
g_free(store);
}
+char *bluesky_store_lookup_last(BlueSkyStore *store, const char *prefix)
+{
+ return store->impl->lookup_last(store->handle, prefix);
+}
+
BlueSkyStoreAsync *bluesky_store_async_new(BlueSkyStore *store)
{
BlueSkyStoreAsync *async;
async->op = STORE_OP_NONE;
async->key = NULL;
async->data = NULL;
+ async->start = async->len = 0;
+ async->range_done = FALSE;
async->result = -1;
async->notifiers = NULL;
async->notifier_count = 0;
async->barrier = NULL;
async->store_private = NULL;
+ async->profile = NULL;
return async;
}
g_mutex_unlock(async->store->lock);
}
+ /* If the request was a range request but the backend read the entire
+ * object, select out the appropriate bytes. */
+ if (async->op == STORE_OP_GET
+ && !async->range_done
+ && async->result == 0
+ && async->data != NULL) {
+ if (async->start != 0 || async->len != 0) {
+ /* If the caller requesteda read outside the object, return an
+ * error. */
+ if (async->start + async->len > async->data->len) {
+ g_warning("Range request outside object boundaries!\n");
+ async->result = -1;
+ } else {
+ if (async->len == 0)
+ async->len = async->data->len - async->start;
+ BlueSkyRCStr *newstr = bluesky_string_new(g_memdup(&async->data->data[async->start], async->len), async->len);
+ bluesky_string_unref(async->data);
+ async->data = newstr;
+ async->range_done = TRUE;
+ }
+ }
+ }
+
async->status = ASYNC_COMPLETE;
g_cond_broadcast(async->completion_cond);
g_thread_pool_push(notifier_thread_pool, nl, NULL);
}
+ if (async->profile) {
+ bluesky_profile_add_event(
+ async->profile,
+ g_strdup_printf("%s for %s complete",
+ async->op == STORE_OP_GET ? "GET"
+ : async->op == STORE_OP_PUT ? "PUT"
+ : async->op == STORE_OP_DELETE ? "DELETE"
+ : async->op == STORE_OP_BARRIER ? "BARRIER" : "???",
+ async->key)
+ );
+ }
+
if (bluesky_verbose) {
g_log("bluesky/store", G_LOG_LEVEL_DEBUG,
"[%p] complete: elapsed = %"PRIi64" ns, latency = %"PRIi64" ns",
// processing was started, if there could be a delay from submission time.
async->exec_time = bluesky_now_hires();
+ if (async->profile) {
+ bluesky_profile_add_event(
+ async->profile,
+ g_strdup_printf("Start %s for %s",
+ async->op == STORE_OP_GET ? "GET"
+ : async->op == STORE_OP_PUT ? "PUT"
+ : async->op == STORE_OP_DELETE ? "DELETE"
+ : async->op == STORE_OP_BARRIER ? "BARRIER" : "???",
+ async->key)
+ );
+ }
+
if (bluesky_verbose) {
g_log("bluesky/store", G_LOG_LEVEL_DEBUG, "[%p] submit: %s %s",
async,
{
}
+static char *filestore_lookup_last(gpointer store, const char *prefix)
+{
+ char *last = NULL;
+ GDir *dir = g_dir_open(".", 0, NULL);
+ if (dir == NULL) {
+ g_warning("Unable to open directory for listing");
+ return NULL;
+ }
+
+ const gchar *file;
+ while ((file = g_dir_read_name(dir)) != NULL) {
+ if (strncmp(file, prefix, strlen(prefix)) == 0) {
+ if (last == NULL || strcmp(file, last) > 0) {
+ g_free(last);
+ last = g_strdup(file);
+ }
+ }
+ }
+ g_dir_close(dir);
+
+ return last;
+}
+
static BlueSkyStoreImplementation filestore_impl = {
.create = filestore_create,
.destroy = filestore_destroy,
.submit = filestore_submit,
.cleanup = filestore_cleanup,
+ .lookup_last = filestore_lookup_last,
+};
+
+/* A store implementation which simply discards all data, for testing. */
+static gpointer nullstore_create(const gchar *path)
+{
+ return (gpointer)nullstore_create;
+}
+
+static void nullstore_destroy(gpointer store)
+{
+}
+
+static void nullstore_submit(gpointer s, BlueSkyStoreAsync *async)
+{
+ bluesky_store_async_mark_complete(async);
+}
+
+static void nullstore_cleanup(gpointer store, BlueSkyStoreAsync *async)
+{
+}
+
+static BlueSkyStoreImplementation nullstore_impl = {
+ .create = nullstore_create,
+ .destroy = nullstore_destroy,
+ .submit = nullstore_submit,
+ .cleanup = nullstore_cleanup,
};
void bluesky_store_init()
bluesky_max_threads, FALSE, NULL);
bluesky_store_register(&memstore_impl, "mem");
bluesky_store_register(&filestore_impl, "file");
+ bluesky_store_register(&nullstore_impl, "null");
}