Adding delete_by_key function to complete partitioning by key feature.

[awesomized/libmemcached] / lib / memcached_delete.c

diff --git a/lib/memcached_delete.c b/lib/memcached_delete.c
index 64036c7998bbb84a0034765986853b799b099292..7c026cbcd9835005833220fd008f4e07c7856801 100644 (file)
--- a/lib/memcached_delete.c
+++ b/lib/memcached_delete.c
@@ -3,19 +3,30 @@
 memcached_return memcached_delete(memcached_st *ptr, char *key, size_t key_length,
                                   time_t expiration)
 {
-  size_t send_length, sent_length;
+  return memcached_delete_by_key(ptr, key, key_length,
+                                 key, key_length, expiration);
+}
+
+memcached_return memcached_delete_by_key(memcached_st *ptr, 
+                                         char *master_key, size_t master_key_length,
+                                         char *key, size_t key_length,
+                                         time_t expiration)
+{
+  char to_write;
+  size_t send_length;
   memcached_return rc;
   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
   unsigned int server_key;
 
   LIBMEMCACHED_MEMCACHED_DELETE_START();
 
-  rc= memcached_connect(ptr);
+  if (key_length == 0)
+    return MEMCACHED_NO_KEY_PROVIDED;
 
-  if (rc != MEMCACHED_SUCCESS)
-    return rc;
+  if (ptr->hosts == NULL || ptr->number_of_hosts == 0)
+    return MEMCACHED_NO_SERVERS;
 
-  server_key= memcached_generate_hash(key, key_length) % ptr->number_of_hosts;
+  server_key= memcached_generate_hash(ptr, master_key, master_key_length);
 
   if (expiration)
     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, 
@@ -26,18 +37,33 @@ memcached_return memcached_delete(memcached_st *ptr, char *key, size_t key_lengt
                           "delete %.*s\r\n", (int)key_length, key);
 
   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
-    return MEMCACHED_WRITE_FAILURE;
-
-  sent_length= send(ptr->hosts[server_key].fd, buffer, send_length, 0);
+  {
+    rc= MEMCACHED_WRITE_FAILURE;
+    goto error;
+  }
 
-  if (sent_length == -1 || sent_length != send_length)
-    return MEMCACHED_WRITE_FAILURE;
+  if ((ptr->flags & MEM_NO_BLOCK))
+    to_write= 0;
+  else
+    to_write= 1;
 
-  rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
-  LIBMEMCACHED_MEMCACHED_DELETE_END();
+  rc= memcached_do(ptr, server_key, buffer, send_length, to_write);
+  if (rc != MEMCACHED_SUCCESS)
+    goto error;
 
-  if (rc == MEMCACHED_DELETED)
+  if ((ptr->flags & MEM_NO_BLOCK))
+  {
     rc= MEMCACHED_SUCCESS;
+    memcached_server_response_increment(ptr, server_key);
+  }
+  else
+  {
+    rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
+    if (rc == MEMCACHED_DELETED)
+      rc= MEMCACHED_SUCCESS;
+  }
 
+error:
+  LIBMEMCACHED_MEMCACHED_DELETE_END();
   return rc;
 }