Add a request id for each request that hits the wire.

[m6w6/libmemcached] / libmemcached / exist.cc

diff --git a/libmemcached/exist.cc b/libmemcached/exist.cc
index b8d4b0d876a325255d6ec9d36a94098f75b087de..58408fd747d2e0795257e468c6c1982fbfeb5bee 100644 (file)
--- a/libmemcached/exist.cc
+++ b/libmemcached/exist.cc
@@ -38,34 +38,38 @@
 
 static memcached_return_t ascii_exist(memcached_st *memc, memcached_server_write_instance_st instance, const char *key, size_t key_length)
 {
-  struct libmemcached_io_vector_st vector[]=
+  libmemcached_io_vector_st vector[]=
   {
-    { sizeof("add ") -1, "add " },
-    { memcached_array_size(memc->_namespace), memcached_array_string(memc->_namespace) },
-    { key_length, key },
-    { sizeof(" 0") -1, " 0" },
-    { sizeof(" 2678400") -1, " 2678400" },
-    { sizeof(" 0") -1, " 0" },
-    { 2, "\r\n" },
-    { 2, "\r\n" }
+    { NULL, 0 },
+    { memcached_literal_param("add ") },
+    { memcached_array_string(memc->_namespace), memcached_array_size(memc->_namespace) },
+    { key, key_length },
+    { memcached_literal_param(" 0") },
+    { memcached_literal_param(" 2678400") },
+    { memcached_literal_param(" 0") },
+    { memcached_literal_param("\r\n") },
+    { memcached_literal_param("\r\n") }
   };
 
   /* Send command header */
-  memcached_return_t rc=  memcached_vdo(instance, vector, 8, true);
-  if (rc == MEMCACHED_SUCCESS)
+  memcached_return_t rc;
+  if (memcached_fatal(rc= memcached_vdo(instance, vector, 9, true)))
   {
-    char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
-    rc= memcached_response(instance, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
+    return rc;
+  }
 
-    if (rc == MEMCACHED_NOTSTORED)
-      rc= MEMCACHED_SUCCESS;
+  char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
+  rc= memcached_response(instance, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
 
-    if (rc == MEMCACHED_STORED)
-      rc= MEMCACHED_NOTFOUND;
+  if (rc == MEMCACHED_NOTSTORED)
+  {
+    rc= MEMCACHED_SUCCESS;
   }
 
-  if (rc == MEMCACHED_WRITE_FAILURE)
-    memcached_io_reset(instance);
+  if (rc == MEMCACHED_STORED)
+  {
+    rc= MEMCACHED_NOTFOUND;
+  }
 
   return rc;
 }
@@ -75,7 +79,8 @@ static memcached_return_t binary_exist(memcached_st *memc, memcached_server_writ
   protocol_binary_request_set request= {};
   size_t send_length= sizeof(request.bytes);
 
-  request.message.header.request.magic= PROTOCOL_BINARY_REQ;
+  initialize_binary_request(instance, request.message.header);
+
   request.message.header.request.opcode= PROTOCOL_BINARY_CMD_ADD;
   request.message.header.request.keylen= htons((uint16_t)(key_length + memcached_array_size(memc->_namespace)));
   request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
@@ -87,28 +92,32 @@ static memcached_return_t binary_exist(memcached_st *memc, memcached_server_writ
                                                             +memcached_array_size(memc->_namespace)
                                                             +request.message.header.request.extlen));
 
-  struct libmemcached_io_vector_st vector[]=
+  libmemcached_io_vector_st vector[]=
   {
-    { send_length, request.bytes },
-    { memcached_array_size(memc->_namespace), memcached_array_string(memc->_namespace) },
-    { key_length, key }
+    { NULL, 0 },
+    { request.bytes, send_length },
+    { memcached_array_string(memc->_namespace), memcached_array_size(memc->_namespace) },
+    { key, key_length }
   };
 
   /* write the header */
   memcached_return_t rc;
-  if ((rc= memcached_vdo(instance, vector, 3, true)) != MEMCACHED_SUCCESS)
+  if (memcached_fatal(rc= memcached_vdo(instance, vector, 4, true)))
   {
-    memcached_io_reset(instance);
-    return (rc == MEMCACHED_SUCCESS) ? MEMCACHED_WRITE_FAILURE : rc;
+    return rc;
   }
 
   rc= memcached_response(instance, NULL, 0, NULL);
 
   if (rc == MEMCACHED_SUCCESS)
+  {
     rc= MEMCACHED_NOTFOUND;
+  }
 
   if (rc == MEMCACHED_DATA_EXISTS)
+  {
     rc= MEMCACHED_SUCCESS;
+  }
 
   return rc;
 }
@@ -123,27 +132,32 @@ memcached_return_t memcached_exist_by_key(memcached_st *memc,
                                           const char *key, size_t key_length)
 {
   memcached_return_t rc;
-  if (memcached_failed(rc= initialize_query(memc)))
+  if (memcached_failed(rc= initialize_query(memc, true)))
   {
     return rc;
   }
 
-  if (memc->flags.use_udp)
+  if (memcached_is_udp(memc))
   {
-    return MEMCACHED_NOT_SUPPORTED;
+    return memcached_set_error(*memc, MEMCACHED_NOT_SUPPORTED, MEMCACHED_AT);
   }
 
-
   uint32_t server_key= memcached_generate_hash_with_redistribution(memc, group_key, group_key_length);
-  memcached_server_write_instance_st instance;
-  instance= memcached_server_instance_fetch(memc, server_key);
+  memcached_server_write_instance_st instance= memcached_server_instance_fetch(memc, server_key);
 
-  if (memc->flags.binary_protocol)
+  if (memcached_is_binary(memc))
   {
-    return binary_exist(memc, instance, key, key_length);
+    rc= binary_exist(memc, instance, key, key_length);
   }
   else
   {
-    return ascii_exist(memc, instance, key, key_length);
+    rc= ascii_exist(memc, instance, key, key_length);
   }
+
+  if (memcached_fatal(rc))
+  {
+    memcached_io_reset(instance);
+  }
+
+  return rc;
 }