Add proper per-file copyright notices/licenses and top-level license.

[bluesky.git] / bluesky / store-kv.cc

diff --git a/bluesky/store-kv.cc b/bluesky/store-kv.cc
index 7a6ac71..3805143 100644 (file)
--- a/bluesky/store-kv.cc
+++ b/bluesky/store-kv.cc
@@ -3,7 +3,29 @@
  * Copyright (C) 2009  The Regents of the University of California
  * Written by Michael Vrable <mvrable@cs.ucsd.edu>
  *
- * TODO: Licensing
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  */
 
 /* Interface to John McCullough's simple key/value store. */
@@ -21,24 +43,14 @@ using namespace boost;
 using namespace kvstore;
 using namespace std;
 
-static gpointer kvstore_new()
-{
-    KeyValueClient *client = new KeyValueClient("127.0.0.1", "9090");
-    return client;
-}
-
-static void kvstore_destroy(gpointer store)
-{
-    KeyValueClient *client = (KeyValueClient *)store;
-    delete client;
-}
+static GThreadPool *thread_pool = NULL;
 
-static void kvstore_submit(gpointer store, BlueSkyStoreAsync *async)
+static void kvstore_task(gpointer a, gpointer b)
 {
-    KeyValueClient *client = (KeyValueClient *)store;
+    BlueSkyStoreAsync *async = (BlueSkyStoreAsync *)a;
+    KeyValueClient *client = (KeyValueClient *)bluesky_store_async_get_handle(async);
 
-    g_return_if_fail(async->status == ASYNC_NEW);
-    g_return_if_fail(async->op != STORE_OP_NONE);
+    async->status = ASYNC_RUNNING;
 
     switch (async->op) {
     case STORE_OP_GET:
@@ -49,6 +61,8 @@ static void kvstore_submit(gpointer store, BlueSkyStoreAsync *async)
                                                     value.length()),
                                             value.length());
             async->result = 0;
+        } else {
+            g_warning("Failed to fetch key %s from kvstore", async->key);
         }
         break;
     }
@@ -56,16 +70,73 @@ static void kvstore_submit(gpointer store, BlueSkyStoreAsync *async)
     case STORE_OP_PUT:
     {
         string value(async->data->data, async->data->len);
-        client->Put(async->key, value);
+        if (!client->Put(async->key, value)) {
+            g_warning("Failed to store key %s to kvstore", async->key);
+        }
         break;
     }
 
     default:
-        g_warning("Uknown operation type for MemStore: %d\n", async->op);
-        return;
+        break;
     }
 
     bluesky_store_async_mark_complete(async);
+    bluesky_store_async_unref(async);
+}
+
+static gpointer kvstore_new(const gchar *path)
+{
+    /* TODO: Right now we leak this memory.  We should probably clean up in
+     * kvstore_destroy, but it's not a big deal. */
+    const gchar *host = "127.0.0.1", *port = "9090";
+    if (path != NULL) {
+        gchar **target = g_strsplit(path, ":", 0);
+        if (target[0] != NULL) {
+            host = target[0];
+            if (target[1] != NULL) {
+                port = target[1];
+            }
+        }
+    }
+
+    static volatile gsize once = 0;
+    if (g_once_init_enter(&once)) {
+        thread_pool = g_thread_pool_new(kvstore_task, NULL,
+                                        bluesky_max_threads, FALSE, NULL);
+        g_once_init_leave(&once, 1);
+    }
+
+    g_print("kvstore: %s port %s\n", host, port);
+    KeyValueClient *client = new KeyValueClient(host, port);
+    return client;
+}
+
+static void kvstore_destroy(gpointer store)
+{
+    KeyValueClient *client = (KeyValueClient *)store;
+    delete client;
+}
+
+static void kvstore_submit(gpointer store, BlueSkyStoreAsync *async)
+{
+    KeyValueClient *client = (KeyValueClient *)store;
+
+    g_return_if_fail(async->status == ASYNC_NEW);
+    g_return_if_fail(async->op != STORE_OP_NONE);
+
+    switch (async->op) {
+    case STORE_OP_GET:
+    case STORE_OP_PUT:
+        async->status = ASYNC_PENDING;
+        bluesky_store_async_ref(async);
+        g_thread_pool_push(thread_pool, async, NULL);
+        break;
+
+    default:
+        g_warning("Uknown operation type for kvstore: %d\n", async->op);
+        bluesky_store_async_mark_complete(async);
+        break;
+    }
 }
 
 static void kvstore_cleanup(gpointer store, BlueSkyStoreAsync *async)