1 /* Blue Sky: File Systems in the Cloud
3 * Copyright (C) 2009 The Regents of the University of California
4 * Written by Michael Vrable <mvrable@cs.ucsd.edu>
9 /* Interface to John McCullough's simple key/value store. */
16 #include "bluesky-private.h"
17 #include "kvservice.h"
20 using namespace boost;
21 using namespace kvstore;
24 static GThreadPool *thread_pool = NULL;
26 static void kvstore_task(gpointer a, gpointer b)
28 BlueSkyStoreAsync *async = (BlueSkyStoreAsync *)a;
29 KeyValueClient *client = (KeyValueClient *)bluesky_store_async_get_handle(async);
31 async->status = ASYNC_RUNNING;
37 if (client->Get(async->key, &value)) {
38 async->data = bluesky_string_new(g_memdup(value.c_str(),
43 g_warning("Failed to fetch key %s from kvstore", async->key);
50 string value(async->data->data, async->data->len);
51 if (!client->Put(async->key, value)) {
52 g_warning("Failed to store key %s to kvstore", async->key);
61 bluesky_store_async_mark_complete(async);
62 bluesky_store_async_unref(async);
65 static gpointer kvstore_new(const gchar *path)
67 /* TODO: Right now we leak this memory. We should probably clean up in
68 * kvstore_destroy, but it's not a big deal. */
69 const gchar *host = "127.0.0.1", *port = "9090";
71 gchar **target = g_strsplit(path, ":", 0);
72 if (target[0] != NULL) {
74 if (target[1] != NULL) {
80 static volatile gsize once = 0;
81 if (g_once_init_enter(&once)) {
82 thread_pool = g_thread_pool_new(kvstore_task, NULL,
83 bluesky_max_threads, FALSE, NULL);
84 g_once_init_leave(&once, 1);
87 g_print("kvstore: %s port %s\n", host, port);
88 KeyValueClient *client = new KeyValueClient(host, port);
92 static void kvstore_destroy(gpointer store)
94 KeyValueClient *client = (KeyValueClient *)store;
98 static void kvstore_submit(gpointer store, BlueSkyStoreAsync *async)
100 KeyValueClient *client = (KeyValueClient *)store;
102 g_return_if_fail(async->status == ASYNC_NEW);
103 g_return_if_fail(async->op != STORE_OP_NONE);
108 async->status = ASYNC_PENDING;
109 bluesky_store_async_ref(async);
110 g_thread_pool_push(thread_pool, async, NULL);
114 g_warning("Uknown operation type for kvstore: %d\n", async->op);
115 bluesky_store_async_mark_complete(async);
120 static void kvstore_cleanup(gpointer store, BlueSkyStoreAsync *async)
122 KeyValueClient *client = (KeyValueClient *)store;
125 static BlueSkyStoreImplementation store_impl = {
132 extern "C" void bluesky_store_init_kv(void)
134 bluesky_store_register(&store_impl, "kv");