X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fmemcached_delete.c;h=bba3c1969fcd5b03674729713b59eab97b5a7f32;hb=0acd9f0be5dbd76e5cd22cf1c3f8cf7d9fc972e4;hp=a105f552e096a29be1075e2cfb3287ffe500faba;hpb=d5ffc30a6f369ea210e92e6a55333121d32b9a55;p=awesomized%2Flibmemcached

diff --git a/libmemcached/memcached_delete.c b/libmemcached/memcached_delete.c
index a105f552..bba3c196 100644
--- a/libmemcached/memcached_delete.c
+++ b/libmemcached/memcached_delete.c
@@ -1,4 +1,5 @@
 #include "common.h"
+#include "memcached/protocol_binary.h"
 
 memcached_return memcached_delete(memcached_st *ptr, const char *key, size_t key_length,
                                   time_t expiration)
@@ -7,12 +8,18 @@ memcached_return memcached_delete(memcached_st *ptr, const char *key, size_t key
                                  key, key_length, expiration);
 }
 
-memcached_return memcached_delete_by_key(memcached_st *ptr, 
+static inline memcached_return binary_delete(memcached_st *ptr,
+                                             unsigned int server_key,
+                                             const char *key,
+                                             size_t key_length,
+					     uint8_t flush);
+
+memcached_return memcached_delete_by_key(memcached_st *ptr,
                                          const char *master_key, size_t master_key_length,
                                          const char *key, size_t key_length,
                                          time_t expiration)
 {
-  char to_write;
+  uint8_t to_write;
   size_t send_length;
   memcached_return rc;
   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
@@ -20,43 +27,89 @@ memcached_return memcached_delete_by_key(memcached_st *ptr,
 
   LIBMEMCACHED_MEMCACHED_DELETE_START();
 
-  unlikely (key_length == 0)
-    return MEMCACHED_NO_KEY_PROVIDED;
+  rc= memcached_validate_key_length(key_length,
+                                    ptr->flags & MEM_BINARY_PROTOCOL);
+  unlikely (rc != MEMCACHED_SUCCESS)
+    return rc;
 
   unlikely (ptr->hosts == NULL || ptr->number_of_hosts == 0)
     return MEMCACHED_NO_SERVERS;
 
   server_key= memcached_generate_hash(ptr, master_key, master_key_length);
+  to_write= (uint8_t)((ptr->flags & MEM_BUFFER_REQUESTS) ? 0 : 1);
+  bool no_reply= (ptr->flags & MEM_NOREPLY);
 
-  if (expiration)
-    send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, 
-                          "delete %s%.*s %llu\r\n", 
-                          ptr->prefix_key,
-                          (int)key_length, key, 
-                          (unsigned long long)expiration);
-  else
-    send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, 
-                          "delete %s%.*s\r\n", 
-                          ptr->prefix_key,
-                          (int)key_length, key);
-
-  if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
+  if (ptr->flags & MEM_BINARY_PROTOCOL)
   {
-    rc= MEMCACHED_WRITE_FAILURE;
-    goto error;
+    likely (!expiration)
+      rc= binary_delete(ptr, server_key, key, key_length, to_write);
+    else
+      rc= MEMCACHED_INVALID_ARGUMENTS;
   }
+  else
+  {
+    unlikely (expiration)
+    {
+       if ((ptr->hosts[server_key].major_version == 1 &&
+            ptr->hosts[server_key].minor_version > 2) ||
+           ptr->hosts[server_key].major_version > 1)
+       {
+         rc= MEMCACHED_INVALID_ARGUMENTS;
+         goto error;
+       }
+       else
+       {
+          if (ptr->hosts[server_key].minor_version == 0)
+          {
+             if (no_reply || !to_write)
+             {
+                /* We might get out of sync with the server if we
+                 * send this command to a server newer than 1.2.x..
+                 * disable no_reply and buffered mode.
+                 */
+                to_write= 1;
+                if (no_reply)
+                   memcached_server_response_increment(&ptr->hosts[server_key]);
+                no_reply= false;
+             }
+          }
+          send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
+                                         "delete %s%.*s %u%s\r\n",
+                                         ptr->prefix_key,
+                                         (int) key_length, key,
+                                         (uint32_t)expiration,
+                                         no_reply ? " noreply" :"" );
+       }
+    }
+    else
+       send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
+                                      "delete %s%.*s%s\r\n",
+                                      ptr->prefix_key,
+                                      (int)key_length, key, no_reply ? " noreply" :"");
 
-  to_write= (ptr->flags & MEM_BUFFER_REQUESTS) ? 0 : 1;
+    if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
+    {
+      rc= MEMCACHED_WRITE_FAILURE;
+      goto error;
+    }
+
+    if (ptr->flags & MEM_USE_UDP && !to_write)
+    {
+      if (send_length > MAX_UDP_DATAGRAM_LENGTH - UDP_DATAGRAM_HEADER_LENGTH)
+        return MEMCACHED_WRITE_FAILURE;
+      if (send_length + ptr->hosts[server_key].write_buffer_offset > MAX_UDP_DATAGRAM_LENGTH)
+        memcached_io_write(&ptr->hosts[server_key], NULL, 0, 1);
+    }
+
+    rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, to_write);
+  }
 
-  rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, to_write);
   if (rc != MEMCACHED_SUCCESS)
     goto error;
 
-  if ((ptr->flags & MEM_BUFFER_REQUESTS))
-  {
+  if (!to_write)
     rc= MEMCACHED_BUFFERED;
-  }
-  else
+  else if (!no_reply)
   {
     rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
     if (rc == MEMCACHED_DELETED)
@@ -70,3 +123,63 @@ error:
   LIBMEMCACHED_MEMCACHED_DELETE_END();
   return rc;
 }
+
+static inline memcached_return binary_delete(memcached_st *ptr,
+                                             unsigned int server_key,
+                                             const char *key,
+					     size_t key_length,
+					     uint8_t flush)
+{
+  protocol_binary_request_delete request= {.bytes= {0}};
+
+  request.message.header.request.magic= PROTOCOL_BINARY_REQ;
+  if (ptr->flags & MEM_NOREPLY)
+    request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETEQ;
+  else
+    request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETE;
+  request.message.header.request.keylen= htons((uint16_t)key_length);
+  request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
+  request.message.header.request.bodylen= htonl((uint32_t) key_length);
+
+  if (ptr->flags & MEM_USE_UDP && !flush)
+  {
+    size_t cmd_size= sizeof(request.bytes) + key_length;
+    if (cmd_size > MAX_UDP_DATAGRAM_LENGTH - UDP_DATAGRAM_HEADER_LENGTH)
+      return MEMCACHED_WRITE_FAILURE;
+    if (cmd_size + ptr->hosts[server_key].write_buffer_offset > MAX_UDP_DATAGRAM_LENGTH)
+      memcached_io_write(&ptr->hosts[server_key], NULL, 0, 1);
+  }
+
+  memcached_return rc= MEMCACHED_SUCCESS;
+
+  if ((memcached_do(&ptr->hosts[server_key], request.bytes,
+                    sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
+      (memcached_io_write(&ptr->hosts[server_key], key,
+                          key_length, (char) flush) == -1))
+  {
+    memcached_io_reset(&ptr->hosts[server_key]);
+    rc= MEMCACHED_WRITE_FAILURE;
+  }
+
+  unlikely (ptr->number_of_replicas > 0)
+  {
+    request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETEQ;
+
+    for (uint32_t x= 0; x < ptr->number_of_replicas; ++x)
+    {
+      ++server_key;
+      if (server_key == ptr->number_of_hosts)
+        server_key= 0;
+
+      memcached_server_st* server= &ptr->hosts[server_key];
+      if ((memcached_do(server, (const char*)request.bytes,
+                        sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
+          (memcached_io_write(server, key, key_length, (char) flush) == -1))
+        memcached_io_reset(server);
+      else
+        memcached_server_response_decrement(server);
+    }
+  }
+
+  return rc;
+}