X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fstorage.cc;h=61ca8270cce22d77ac8db9f7c4c32c81709b9329;hb=1be11f8bb8fdf368985d9e1c900b250541dc4791;hp=9d77f51f4e5fd1a6e4ab19c9ebfd0cf7bbcefdee;hpb=32767cce940f7bcde4633cc3cd23efc28ad954bd;p=awesomized%2Flibmemcached diff --git a/libmemcached/storage.cc b/libmemcached/storage.cc index 9d77f51f..61ca8270 100644 --- a/libmemcached/storage.cc +++ b/libmemcached/storage.cc @@ -1,14 +1,41 @@ -/* LibMemcached - * Copyright (C) 2006-2009 Brian Aker - * All rights reserved. +/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab: + * + * Libmemcached library * - * Use and distribution licensed under the BSD license. See - * the COPYING file in the parent directory for full text. + * Copyright (C) 2011 Data Differential, http://datadifferential.com/ + * Copyright (C) 2006-2009 Brian Aker All rights reserved. * - * Summary: Storage related functions, aka set, replace,.. + * 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 enum memcached_storage_action_t { @@ -25,205 +52,356 @@ static inline const char *storage_op_string(memcached_storage_action_t verb) { switch (verb) { - case SET_OP: - return "set "; case REPLACE_OP: return "replace "; + case ADD_OP: return "add "; + case PREPEND_OP: return "prepend "; + case APPEND_OP: return "append "; + case CAS_OP: return "cas "; - default: - return "tosserror"; /* This is impossible, fixes issue for compiler warning in VisualStudio */ + + case SET_OP: + break; + } + + return "set "; +} + +static inline bool can_by_encrypted(const memcached_storage_action_t verb) +{ + switch (verb) + { + case SET_OP: + case ADD_OP: + case CAS_OP: + case REPLACE_OP: + return true; + + case APPEND_OP: + case PREPEND_OP: + break; + } + + return false; +} + +static inline uint8_t get_com_code(const memcached_storage_action_t verb, const bool reply) +{ + if (reply == false) + { + switch (verb) + { + case SET_OP: + return PROTOCOL_BINARY_CMD_SETQ; + + case ADD_OP: + return PROTOCOL_BINARY_CMD_ADDQ; + + case CAS_OP: /* FALLTHROUGH */ + case REPLACE_OP: + return PROTOCOL_BINARY_CMD_REPLACEQ; + + case APPEND_OP: + return PROTOCOL_BINARY_CMD_APPENDQ; + + case PREPEND_OP: + return PROTOCOL_BINARY_CMD_PREPENDQ; + } + } + + switch (verb) + { + case SET_OP: + break; + + case ADD_OP: + return PROTOCOL_BINARY_CMD_ADD; + + case CAS_OP: /* FALLTHROUGH */ + case REPLACE_OP: + return PROTOCOL_BINARY_CMD_REPLACE; + + case APPEND_OP: + return PROTOCOL_BINARY_CMD_APPEND; + + case PREPEND_OP: + return PROTOCOL_BINARY_CMD_PREPEND; } - /* NOTREACHED */ + return PROTOCOL_BINARY_CMD_SET; } -static memcached_return_t memcached_send_binary(memcached_st *ptr, - memcached_server_write_instance_st server, +static memcached_return_t memcached_send_binary(Memcached *ptr, + memcached_instance_st* server, uint32_t server_key, const char *key, - size_t key_length, + const size_t key_length, const char *value, - size_t value_length, - time_t expiration, - uint32_t flags, - uint64_t cas, - memcached_storage_action_t verb); - -static inline memcached_return_t memcached_send(memcached_st *ptr, - const char *group_key, size_t group_key_length, - const char *key, size_t key_length, - const char *value, size_t value_length, - time_t expiration, - uint32_t flags, - uint64_t cas, + const size_t value_length, + const time_t expiration, + const uint32_t flags, + const uint64_t cas, + const bool flush, + const bool reply, memcached_storage_action_t verb) { - bool to_write; - size_t write_length; - char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE]; + protocol_binary_request_set request= {}; + size_t send_length= sizeof(request.bytes); - WATCHPOINT_ASSERT(!(value == NULL && value_length > 0)); + initialize_binary_request(server, request.message.header); - memcached_return_t rc; - if (memcached_failed(rc= initialize_query(ptr))) + request.message.header.request.opcode= get_com_code(verb, reply); + request.message.header.request.keylen= htons((uint16_t)(key_length + memcached_array_size(ptr->_namespace))); + request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES; + if (verb == APPEND_OP or verb == PREPEND_OP) { - return rc; + send_length -= 8; /* append & prepend does not contain extras! */ } - - if (memcached_failed(rc= memcached_validate_key_length(key_length, ptr->flags.binary_protocol))) + else { - return rc; + request.message.header.request.extlen= 8; + request.message.body.flags= htonl(flags); + request.message.body.expiration= htonl((uint32_t)expiration); } - if (memcached_failed(memcached_key_test(*ptr, (const char **)&key, &key_length, 1))) + request.message.header.request.bodylen= htonl((uint32_t) (key_length + memcached_array_size(ptr->_namespace) + value_length + + request.message.header.request.extlen)); + + if (cas) { - return MEMCACHED_BAD_KEY_PROVIDED; + request.message.header.request.cas= memcached_htonll(cas); } - uint32_t server_key= memcached_generate_hash_with_redistribution(ptr, group_key, group_key_length); - memcached_server_write_instance_st instance= memcached_server_instance_fetch(ptr, server_key); - - WATCHPOINT_SET(instance->io_wait_count.read= 0); - WATCHPOINT_SET(instance->io_wait_count.write= 0); + libmemcached_io_vector_st vector[]= + { + { NULL, 0 }, + { request.bytes, send_length }, + { memcached_array_string(ptr->_namespace), memcached_array_size(ptr->_namespace) }, + { key, key_length }, + { value, value_length } + }; - if (ptr->flags.binary_protocol) + /* write the header */ + memcached_return_t rc; + if ((rc= memcached_vdo(server, vector, 5, flush)) != MEMCACHED_SUCCESS) { - rc= memcached_send_binary(ptr, instance, server_key, - key, key_length, - value, value_length, expiration, - flags, cas, verb); - WATCHPOINT_IF_LABELED_NUMBER(instance->io_wait_count.read > 2, "read IO_WAIT", instance->io_wait_count.read); - WATCHPOINT_IF_LABELED_NUMBER(instance->io_wait_count.write > 2, "write_IO_WAIT", instance->io_wait_count.write); + assert(memcached_last_error(server->root) != MEMCACHED_SUCCESS); + return memcached_last_error(server->root); } - else + + if (verb == SET_OP and ptr->number_of_replicas > 0) { + request.message.header.request.opcode= PROTOCOL_BINARY_CMD_SETQ; + WATCHPOINT_STRING("replicating"); - if (cas) + for (uint32_t x= 0; x < ptr->number_of_replicas; x++) { - int check_length; - check_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, - "%s %.*s%.*s %u %llu %lu %llu%s\r\n", - storage_op_string(verb), - memcached_print_array(ptr->_namespace), - (int)key_length, key, flags, - (unsigned long long)expiration, (unsigned long)value_length, - (unsigned long long)cas, - (ptr->flags.no_reply) ? " noreply" : ""); - if (check_length >= MEMCACHED_DEFAULT_COMMAND_SIZE || check_length < 0) + ++server_key; + if (server_key == memcached_server_count(ptr)) { - rc= memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, - memcached_literal_param("snprintf(MEMCACHED_DEFAULT_COMMAND_SIZE)")); - memcached_io_reset(instance); + server_key= 0; + } + + memcached_instance_st* instance= memcached_instance_fetch(ptr, server_key); - return rc; + if (memcached_success(memcached_vdo(instance, vector, 5, false))) + { + memcached_server_response_decrement(instance); } - write_length= check_length; } - else - { - char *buffer_ptr= buffer; - const char *command= storage_op_string(verb); - - /* Copy in the command, no space needed, we handle that in the command function*/ - memcpy(buffer_ptr, command, strlen(command)); - - /* Copy in the key prefix, switch to the buffer_ptr */ - buffer_ptr= (char *)memcpy((char *)(buffer_ptr + strlen(command)), (char *)memcached_array_string(ptr->_namespace), memcached_array_size(ptr->_namespace)); - - /* Copy in the key, adjust point if a key prefix was used. */ - buffer_ptr= (char *)memcpy(buffer_ptr + memcached_array_size(ptr->_namespace), - key, key_length); - buffer_ptr+= key_length; - buffer_ptr[0]= ' '; - buffer_ptr++; - - write_length= (size_t)(buffer_ptr - buffer); - int check_length= snprintf(buffer_ptr, MEMCACHED_DEFAULT_COMMAND_SIZE -(size_t)(buffer_ptr - buffer), - "%u %llu %lu%s\r\n", - flags, - (unsigned long long)expiration, (unsigned long)value_length, - ptr->flags.no_reply ? " noreply" : ""); - if ((size_t)check_length >= MEMCACHED_DEFAULT_COMMAND_SIZE -size_t(buffer_ptr - buffer) || check_length < 0) - { - rc= memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, - memcached_literal_param("snprintf(MEMCACHED_DEFAULT_COMMAND_SIZE)")); - memcached_io_reset(instance); + } - return rc; - } + if (flush == false) + { + return MEMCACHED_BUFFERED; + } - write_length+= (size_t)check_length; - WATCHPOINT_ASSERT(write_length < MEMCACHED_DEFAULT_COMMAND_SIZE); - } + // No reply always assumes success + if (reply == false) + { + return MEMCACHED_SUCCESS; + } - if (ptr->flags.use_udp && ptr->flags.buffer_requests) - { - size_t cmd_size= write_length + value_length +2; - if (cmd_size > MAX_UDP_DATAGRAM_LENGTH - UDP_DATAGRAM_HEADER_LENGTH) - return memcached_set_error(*ptr, MEMCACHED_WRITE_FAILURE, MEMCACHED_AT); + return memcached_response(server, NULL, 0, NULL); +} - if (cmd_size + instance->write_buffer_offset > MAX_UDP_DATAGRAM_LENGTH) - memcached_io_write(instance, NULL, 0, true); - } +static memcached_return_t memcached_send_ascii(Memcached *ptr, + memcached_instance_st* instance, + const char *key, + const size_t key_length, + const char *value, + const size_t value_length, + const time_t expiration, + const uint32_t flags, + const uint64_t cas, + const bool flush, + const bool reply, + const memcached_storage_action_t verb) +{ + char flags_buffer[MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH +1]; + int flags_buffer_length= snprintf(flags_buffer, sizeof(flags_buffer), " %u", flags); + if (size_t(flags_buffer_length) >= sizeof(flags_buffer) or flags_buffer_length < 0) + { + return memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, + memcached_literal_param("snprintf(MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH)")); + } + + char expiration_buffer[MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH +1]; + int expiration_buffer_length= snprintf(expiration_buffer, sizeof(expiration_buffer), " %llu", (unsigned long long)expiration); + if (size_t(expiration_buffer_length) >= sizeof(expiration_buffer) or expiration_buffer_length < 0) + { + return memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, + memcached_literal_param("snprintf(MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH)")); + } + + char value_buffer[MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH +1]; + int value_buffer_length= snprintf(value_buffer, sizeof(value_buffer), " %llu", (unsigned long long)value_length); + if (size_t(value_buffer_length) >= sizeof(value_buffer) or value_buffer_length < 0) + { + return memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, + memcached_literal_param("snprintf(MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH)")); + } - if (write_length >= MEMCACHED_DEFAULT_COMMAND_SIZE) + char cas_buffer[MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH +1]; + int cas_buffer_length= 0; + if (cas) + { + cas_buffer_length= snprintf(cas_buffer, sizeof(cas_buffer), " %llu", (unsigned long long)cas); + if (size_t(cas_buffer_length) >= sizeof(cas_buffer) or cas_buffer_length < 0) { - rc= memcached_set_error(*ptr, MEMCACHED_WRITE_FAILURE, MEMCACHED_AT); + return memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, + memcached_literal_param("snprintf(MEMCACHED_MAXIMUM_INTEGER_DISPLAY_LENGTH)")); } - else + } + + libmemcached_io_vector_st vector[]= + { + { NULL, 0 }, + { storage_op_string(verb), strlen(storage_op_string(verb))}, + { memcached_array_string(ptr->_namespace), memcached_array_size(ptr->_namespace) }, + { key, key_length }, + { flags_buffer, size_t(flags_buffer_length) }, + { expiration_buffer, size_t(expiration_buffer_length) }, + { value_buffer, size_t(value_buffer_length) }, + { cas_buffer, size_t(cas_buffer_length) }, + { " noreply", reply ? 0 : memcached_literal_param_size(" noreply") }, + { memcached_literal_param("\r\n") }, + { value, value_length }, + { memcached_literal_param("\r\n") } + }; + + /* Send command header */ + memcached_return_t rc= memcached_vdo(instance, vector, 12, flush); + + // If we should not reply, return with MEMCACHED_SUCCESS, unless error + if (reply == false) + { + return memcached_success(rc) ? MEMCACHED_SUCCESS : rc; + } + + if (flush == false) + { + return memcached_success(rc) ? MEMCACHED_BUFFERED : rc; + } + + if (rc == MEMCACHED_SUCCESS) + { + char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE]; + rc= memcached_response(instance, buffer, sizeof(buffer), NULL); + + if (rc == MEMCACHED_STORED) { - struct libmemcached_io_vector_st vector[]= - { - { write_length, buffer }, - { value_length, value }, - { 2, "\r\n" } - }; + return MEMCACHED_SUCCESS; + } + } - if (ptr->flags.buffer_requests && verb == SET_OP) - { - to_write= false; - } - else - { - to_write= true; - } + assert(memcached_failed(rc)); +#if 0 + if (memcached_has_error(ptr) == false) + { + return memcached_set_error(*ptr, rc, MEMCACHED_AT); + } +#endif - /* Send command header */ - rc= memcached_vdo(instance, vector, 3, to_write); - if (rc == MEMCACHED_SUCCESS) - { + return rc; +} - if (ptr->flags.no_reply) - { - rc= (to_write == false) ? MEMCACHED_BUFFERED : MEMCACHED_SUCCESS; - } - else if (to_write == false) - { - rc= MEMCACHED_BUFFERED; - } - else - { - rc= memcached_response(instance, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL); - - if (rc == MEMCACHED_STORED) - rc= MEMCACHED_SUCCESS; - } - } +static inline memcached_return_t memcached_send(memcached_st *shell, + const char *group_key, size_t group_key_length, + const char *key, size_t key_length, + const char *value, size_t value_length, + const time_t expiration, + const uint32_t flags, + const uint64_t cas, + memcached_storage_action_t verb) +{ + Memcached* ptr= memcached2Memcached(shell); + memcached_return_t rc; + if (memcached_failed(rc= initialize_query(ptr, true))) + { + return rc; + } + + if (memcached_failed(memcached_key_test(*ptr, (const char **)&key, &key_length, 1))) + { + return memcached_last_error(ptr); + } + + uint32_t server_key= memcached_generate_hash_with_redistribution(ptr, group_key, group_key_length); + memcached_instance_st* instance= memcached_instance_fetch(ptr, server_key); + + WATCHPOINT_SET(instance->io_wait_count.read= 0); + WATCHPOINT_SET(instance->io_wait_count.write= 0); + + bool flush= true; + if (memcached_is_buffering(instance->root) and verb == SET_OP) + { + flush= false; + } + + bool reply= memcached_is_replying(ptr); + + hashkit_string_st* destination= NULL; + + if (memcached_is_encrypted(ptr)) + { + if (can_by_encrypted(verb) == false) + { + return memcached_set_error(*ptr, MEMCACHED_NOT_SUPPORTED, MEMCACHED_AT, + memcached_literal_param("Operation not allowed while encyrption is enabled")); } - if (rc == MEMCACHED_WRITE_FAILURE) - memcached_io_reset(instance); + if ((destination= hashkit_encrypt(&ptr->hashkit, value, value_length)) == NULL) + { + return rc; + } + value= hashkit_string_c_str(destination); + value_length= hashkit_string_length(destination); + } + + if (memcached_is_binary(ptr)) + { + rc= memcached_send_binary(ptr, instance, server_key, + key, key_length, + value, value_length, expiration, + flags, cas, flush, reply, verb); + } + else + { + rc= memcached_send_ascii(ptr, instance, + key, key_length, + value, value_length, expiration, + flags, cas, flush, reply, verb); } - WATCHPOINT_IF_LABELED_NUMBER(instance->io_wait_count.read > 2, "read IO_WAIT", instance->io_wait_count.read); - WATCHPOINT_IF_LABELED_NUMBER(instance->io_wait_count.write > 2, "write_IO_WAIT", instance->io_wait_count.write); + hashkit_string_free(destination); return rc; } @@ -254,6 +432,7 @@ memcached_return_t memcached_add(memcached_st *ptr, rc= memcached_send(ptr, key, key_length, key, key_length, value, value_length, expiration, flags, 0, ADD_OP); + LIBMEMCACHED_MEMCACHED_ADD_END(); return rc; } @@ -369,11 +548,9 @@ memcached_return_t memcached_prepend_by_key(memcached_st *ptr, time_t expiration, uint32_t flags) { - memcached_return_t rc; - rc= memcached_send(ptr, group_key, group_key_length, - key, key_length, value, value_length, - expiration, flags, 0, PREPEND_OP); - return rc; + return memcached_send(ptr, group_key, group_key_length, + key, key_length, value, value_length, + expiration, flags, 0, PREPEND_OP); } memcached_return_t memcached_append_by_key(memcached_st *ptr, @@ -383,11 +560,9 @@ memcached_return_t memcached_append_by_key(memcached_st *ptr, time_t expiration, uint32_t flags) { - memcached_return_t rc; - rc= memcached_send(ptr, group_key, group_key_length, - key, key_length, value, value_length, - expiration, flags, 0, APPEND_OP); - return rc; + return memcached_send(ptr, group_key, group_key_length, + key, key_length, value, value_length, + expiration, flags, 0, APPEND_OP); } memcached_return_t memcached_cas_by_key(memcached_st *ptr, @@ -398,176 +573,8 @@ memcached_return_t memcached_cas_by_key(memcached_st *ptr, uint32_t flags, uint64_t cas) { - memcached_return_t rc; - rc= memcached_send(ptr, group_key, group_key_length, - key, key_length, value, value_length, - expiration, flags, cas, CAS_OP); - return rc; -} - -static inline uint8_t get_com_code(memcached_storage_action_t verb, bool noreply) -{ - /* 0 isn't a value we want, but GCC 4.2 seems to think ret can otherwise - * be used uninitialized in this function. FAIL */ - uint8_t ret= 0; - - if (noreply) - switch (verb) - { - case SET_OP: - ret=PROTOCOL_BINARY_CMD_SETQ; - break; - case ADD_OP: - ret=PROTOCOL_BINARY_CMD_ADDQ; - break; - case CAS_OP: /* FALLTHROUGH */ - case REPLACE_OP: - ret=PROTOCOL_BINARY_CMD_REPLACEQ; - break; - case APPEND_OP: - ret=PROTOCOL_BINARY_CMD_APPENDQ; - break; - case PREPEND_OP: - ret=PROTOCOL_BINARY_CMD_PREPENDQ; - break; - default: - WATCHPOINT_ASSERT(verb); - break; - } - else - switch (verb) - { - case SET_OP: - ret=PROTOCOL_BINARY_CMD_SET; - break; - case ADD_OP: - ret=PROTOCOL_BINARY_CMD_ADD; - break; - case CAS_OP: /* FALLTHROUGH */ - case REPLACE_OP: - ret=PROTOCOL_BINARY_CMD_REPLACE; - break; - case APPEND_OP: - ret=PROTOCOL_BINARY_CMD_APPEND; - break; - case PREPEND_OP: - ret=PROTOCOL_BINARY_CMD_PREPEND; - break; - default: - WATCHPOINT_ASSERT(verb); - break; - } - - return ret; -} - - - -static memcached_return_t memcached_send_binary(memcached_st *ptr, - memcached_server_write_instance_st server, - uint32_t server_key, - const char *key, - size_t key_length, - const char *value, - size_t value_length, - time_t expiration, - uint32_t flags, - uint64_t cas, - memcached_storage_action_t verb) -{ - bool flush; - protocol_binary_request_set request= {}; - size_t send_length= sizeof(request.bytes); - - bool noreply= server->root->flags.no_reply; - - request.message.header.request.magic= PROTOCOL_BINARY_REQ; - request.message.header.request.opcode= get_com_code(verb, noreply); - request.message.header.request.keylen= htons((uint16_t)(key_length + memcached_array_size(ptr->_namespace))); - request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES; - if (verb == APPEND_OP || verb == PREPEND_OP) - send_length -= 8; /* append & prepend does not contain extras! */ - else - { - request.message.header.request.extlen= 8; - request.message.body.flags= htonl(flags); - request.message.body.expiration= htonl((uint32_t)expiration); - } - - request.message.header.request.bodylen= htonl((uint32_t) (key_length + memcached_array_size(ptr->_namespace) + value_length + - request.message.header.request.extlen)); - - if (cas) - request.message.header.request.cas= memcached_htonll(cas); - - flush= (bool) ((server->root->flags.buffer_requests && verb == SET_OP) ? 0 : 1); - - if (server->root->flags.use_udp && ! flush) - { - size_t cmd_size= send_length + key_length + value_length; - - if (cmd_size > MAX_UDP_DATAGRAM_LENGTH - UDP_DATAGRAM_HEADER_LENGTH) - { - return MEMCACHED_WRITE_FAILURE; - } - if (cmd_size + server->write_buffer_offset > MAX_UDP_DATAGRAM_LENGTH) - { - memcached_io_write(server, NULL, 0, true); - } - } - - struct libmemcached_io_vector_st vector[]= - { - { send_length, request.bytes }, - { memcached_array_size(ptr->_namespace), memcached_array_string(ptr->_namespace) }, - { key_length, key }, - { value_length, value } - }; - - /* write the header */ - memcached_return_t rc; - if ((rc= memcached_vdo(server, vector, 4, flush)) != MEMCACHED_SUCCESS) - { - memcached_io_reset(server); - return (rc == MEMCACHED_SUCCESS) ? MEMCACHED_WRITE_FAILURE : rc; - } - - if (verb == SET_OP && ptr->number_of_replicas > 0) - { - request.message.header.request.opcode= PROTOCOL_BINARY_CMD_SETQ; - WATCHPOINT_STRING("replicating"); - - for (uint32_t x= 0; x < ptr->number_of_replicas; x++) - { - memcached_server_write_instance_st instance; - - ++server_key; - if (server_key == memcached_server_count(ptr)) - server_key= 0; - - instance= memcached_server_instance_fetch(ptr, server_key); - - if (memcached_vdo(instance, vector, 4, false) != MEMCACHED_SUCCESS) - { - memcached_io_reset(instance); - } - else - { - memcached_server_response_decrement(instance); - } - } - } - - if (flush == false) - { - return MEMCACHED_BUFFERED; - } - - if (noreply) - { - return MEMCACHED_SUCCESS; - } - - return memcached_response(server, NULL, 0, NULL); + return memcached_send(ptr, group_key, group_key_length, + key, key_length, value, value_length, + expiration, flags, cas, CAS_OP); }