store::memory: Add a plugin providing an in-memory store.

[sysdb.git] / src / plugins / store / memory.c

diff --git a/src/plugins/store/memory.c b/src/plugins/store/memory.c
new file mode 100644 (file)
index 0000000..3cbc1e8
--- /dev/null
+++ b/src/plugins/store/memory.c
@@ -0,0 +1,99 @@
+/*
+ * SysDB - src/plugins/backend/store/memory.c
+ * Copyright (C) 2015 Sebastian 'tokkee' Harl <sh@tokkee.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS 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.
+ */
+
+#if HAVE_CONFIG_H
+#      include "config.h"
+#endif
+
+#include "sysdb.h"
+#include "core/plugin.h"
+#include "core/store.h"
+#include "utils/error.h"
+
+SDB_PLUGIN_MAGIC;
+
+/*
+ * plugin API
+ */
+
+static int
+mem_init(sdb_object_t *user_data)
+{
+       sdb_store_t *store = SDB_STORE(user_data);
+
+       if (! store) {
+               sdb_log(SDB_LOG_ERR, "store: Failed to allocate store");
+               return -1;
+       }
+       if (sdb_plugin_register_writer("memstore",
+                               &sdb_store_writer, SDB_OBJ(store))) {
+               sdb_object_deref(SDB_OBJ(store));
+               return -1;
+       }
+       if (sdb_plugin_register_reader("memstore",
+                               &sdb_store_reader, SDB_OBJ(store))) {
+               sdb_object_deref(SDB_OBJ(store));
+               return -1;
+       }
+       return 0;
+} /* mem_init */
+
+static int
+mem_shutdown(sdb_object_t *user_data)
+{
+       sdb_object_deref(user_data);
+       return 0;
+} /* mem_shutdown */
+
+int
+sdb_module_init(sdb_plugin_info_t *info)
+{
+       /* store singleton */
+       static sdb_store_t *store;
+
+       sdb_plugin_set_info(info, SDB_PLUGIN_INFO_DESC, "in-memory object store");
+       sdb_plugin_set_info(info, SDB_PLUGIN_INFO_COPYRIGHT,
+                       "Copyright (C) 2015 Sebastian 'tokkee' Harl <sh@tokkee.org>");
+       sdb_plugin_set_info(info, SDB_PLUGIN_INFO_LICENSE, "BSD");
+       sdb_plugin_set_info(info, SDB_PLUGIN_INFO_VERSION, SDB_VERSION);
+       sdb_plugin_set_info(info, SDB_PLUGIN_INFO_PLUGIN_VERSION, SDB_VERSION);
+
+       if (! store) {
+               if (! (store = sdb_store_create())) {
+                       sdb_log(SDB_LOG_ERR, "store::memory plugin: "
+                                       "Failed to create store object");
+                       return -1;
+               }
+       }
+
+       sdb_plugin_register_init("main", mem_init, SDB_OBJ(store));
+       sdb_plugin_register_shutdown("main", mem_shutdown, SDB_OBJ(store));
+       return 0;
+} /* sdb_module_init */
+
+/* vim: set tw=78 sw=4 ts=4 noexpandtab : */
+