+++ /dev/null
-/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
- *
- * Libmemcached library
- *
- * Copyright (C) 2011 Data Differential, http://datadifferential.com/
- * Copyright (C) 2006-2009 Brian Aker All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * * 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.
- *
- * * The names of its contributors may not be used to endorse or
- * promote products derived from this software without specific prior
- * written permission.
- *
- * 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
- * OWNER 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.
- *
- */
-
-#include <libmemcached/common.h>
-
-memcached_return_t memcached_delete(memcached_st *shell, const char *key, size_t key_length,
- time_t expiration)
-{
- return memcached_delete_by_key(shell, key, key_length, key, key_length, expiration);
-}
-
-static inline memcached_return_t ascii_delete(memcached_instance_st* instance,
- uint32_t ,
- const char *key,
- const size_t key_length,
- const bool reply,
- const bool is_buffering)
-{
- libmemcached_io_vector_st vector[]=
- {
- { NULL, 0 },
- { memcached_literal_param("delete ") },
- { memcached_array_string(instance->root->_namespace), memcached_array_size(instance->root->_namespace) },
- { key, key_length },
- { " noreply", reply ? 0 : memcached_literal_param_size(" noreply") },
- { memcached_literal_param("\r\n") }
- };
-
- /* Send command header, only flush if we are NOT buffering */
- return memcached_vdo(instance, vector, 6, is_buffering ? false : true);
-}
-
-static inline memcached_return_t binary_delete(memcached_instance_st* instance,
- uint32_t server_key,
- const char *key,
- const size_t key_length,
- const bool reply,
- const bool is_buffering)
-{
- protocol_binary_request_delete request= {};
-
- bool should_flush= is_buffering ? false : true;
-
- initialize_binary_request(instance, request.message.header);
-
- if (reply)
- {
- request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETE;
- }
- else
- {
- request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETEQ;
- }
- request.message.header.request.keylen= htons(uint16_t(key_length + memcached_array_size(instance->root->_namespace)));
- request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
- request.message.header.request.bodylen= htonl(uint32_t(key_length + memcached_array_size(instance->root->_namespace)));
-
- libmemcached_io_vector_st vector[]=
- {
- { NULL, 0 },
- { request.bytes, sizeof(request.bytes) },
- { memcached_array_string(instance->root->_namespace), memcached_array_size(instance->root->_namespace) },
- { key, key_length }
- };
-
- memcached_return_t rc= memcached_vdo(instance, vector, 4, should_flush);
-
- if (memcached_has_replicas(instance))
- {
- request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETEQ;
-
- for (uint32_t x= 0; x < memcached_has_replicas(instance); ++x)
- {
- ++server_key;
-
- if (server_key == memcached_server_count(instance->root))
- {
- server_key= 0;
- }
-
- memcached_instance_st* replica= memcached_instance_fetch(instance->root, server_key);
-
- if (memcached_success(memcached_vdo(replica, vector, 4, should_flush)))
- {
- memcached_server_response_decrement(replica);
- }
- }
- }
-
- return rc;
-}
-
-memcached_return_t memcached_delete_by_key(memcached_st *shell,
- const char *group_key, size_t group_key_length,
- const char *key, size_t key_length,
- time_t expiration)
-{
- Memcached* memc= memcached2Memcached(shell);
- LIBMEMCACHED_MEMCACHED_DELETE_START();
-
- memcached_return_t rc;
- if (memcached_fatal(rc= initialize_query(memc, true)))
- {
- return rc;
- }
-
- if (memcached_fatal(rc= memcached_key_test(*memc, (const char **)&key, &key_length, 1)))
- {
- return memcached_last_error(memc);
- }
-
- if (expiration)
- {
- return memcached_set_error(*memc, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
- memcached_literal_param("Memcached server version does not allow expiration of deleted items"));
- }
-
- uint32_t server_key= memcached_generate_hash_with_redistribution(memc, group_key, group_key_length);
- memcached_instance_st* instance= memcached_instance_fetch(memc, server_key);
-
- bool is_buffering= memcached_is_buffering(instance->root);
- bool is_replying= memcached_is_replying(instance->root);
-
- // If a delete trigger exists, we need a response, so no buffering/noreply
- if (memc->delete_trigger)
- {
- if (is_buffering)
- {
- return memcached_set_error(*memc, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
- memcached_literal_param("Delete triggers cannot be used if buffering is enabled"));
- }
-
- if (is_replying == false)
- {
- return memcached_set_error(*memc, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
- memcached_literal_param("Delete triggers cannot be used if MEMCACHED_BEHAVIOR_NOREPLY is set"));
- }
- }
-
- if (memcached_is_binary(memc))
- {
- rc= binary_delete(instance, server_key, key, key_length, is_replying, is_buffering);
- }
- else
- {
- rc= ascii_delete(instance, server_key, key, key_length, is_replying, is_buffering);
- }
-
- if (rc == MEMCACHED_SUCCESS)
- {
- if (is_buffering == true)
- {
- rc= MEMCACHED_BUFFERED;
- }
- else if (is_replying == false)
- {
- rc= MEMCACHED_SUCCESS;
- }
- else
- {
- char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
- rc= memcached_response(instance, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
- if (rc == MEMCACHED_DELETED)
- {
- rc= MEMCACHED_SUCCESS;
- if (memc->delete_trigger)
- {
- memc->delete_trigger(memc, key, key_length);
- }
- }
- }
- }
-
- LIBMEMCACHED_MEMCACHED_DELETE_END();
- return rc;
-}
projects / awesomized / libmemcached / blobdiff