+++ /dev/null
-#include "common.h"
-#include "memcached/protocol_binary.h"
-
-memcached_return_t memcached_delete(memcached_st *ptr, const char *key, size_t key_length,
- time_t expiration)
-{
- return memcached_delete_by_key(ptr, key, key_length,
- key, key_length, expiration);
-}
-
-static inline memcached_return_t binary_delete(memcached_st *ptr,
- unsigned int server_key,
- const char *key,
- size_t key_length,
- uint8_t flush);
-
-memcached_return_t 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)
-{
- uint8_t to_write;
- size_t send_length;
- memcached_return_t rc;
- char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
- unsigned int server_key;
-
- LIBMEMCACHED_MEMCACHED_DELETE_START();
-
- rc= memcached_validate_key_length(key_length,
- ptr->flags.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.buffer_requests) ? 0 : 1);
- bool no_reply= (ptr->flags.no_reply);
-
- if (ptr->flags.binary_protocol)
- {
- 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" :"");
-
- if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
- {
- rc= MEMCACHED_WRITE_FAILURE;
- goto error;
- }
-
- if (ptr->flags.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);
- }
-
- if (rc != MEMCACHED_SUCCESS)
- goto error;
-
- if (!to_write)
- rc= MEMCACHED_BUFFERED;
- else if (!no_reply)
- {
- rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
- if (rc == MEMCACHED_DELETED)
- rc= MEMCACHED_SUCCESS;
- }
-
- if (rc == MEMCACHED_SUCCESS && ptr->delete_trigger)
- ptr->delete_trigger(ptr, key, key_length);
-
-error:
- LIBMEMCACHED_MEMCACHED_DELETE_END();
- return rc;
-}
-
-static inline memcached_return_t 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.no_reply)
- 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.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_t 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;
-}
projects / awesomized / libmemcached / blobdiff