#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)
key, key_length, expiration);
}
-static inline memcached_return binary_delete(memcached_st *ptr,
+static inline memcached_return binary_delete(memcached_st *ptr,
unsigned int server_key,
- const char *key,
+ const char *key,
size_t key_length,
- int flush);
+ uint8_t flush);
-memcached_return memcached_delete_by_key(memcached_st *ptr,
+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];
LIBMEMCACHED_MEMCACHED_DELETE_START();
- rc= memcached_validate_key_length(key_length,
+ rc= memcached_validate_key_length(key_length,
ptr->flags & MEM_BINARY_PROTOCOL);
unlikely (rc != MEMCACHED_SUCCESS)
return rc;
return MEMCACHED_NO_SERVERS;
server_key= memcached_generate_hash(ptr, master_key, master_key_length);
- to_write= (ptr->flags & MEM_BUFFER_REQUESTS) ? 0 : 1;
-
- if (ptr->flags & MEM_BINARY_PROTOCOL)
- rc= binary_delete(ptr, server_key, key, key_length, to_write);
- else
+ to_write= (uint8_t)((ptr->flags & MEM_BUFFER_REQUESTS) ? 0 : 1);
+ bool no_reply= (ptr->flags & MEM_NOREPLY);
+
+ if (ptr->flags & MEM_BINARY_PROTOCOL)
+ {
+ likely (!expiration)
+ rc= binary_delete(ptr, server_key, key, key_length, to_write);
+ else
+ rc= MEMCACHED_INVALID_ARGUMENTS;
+ }
+ else
{
- if (expiration)
- send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
- "delete %s%.*s %u\r\n",
- ptr->prefix_key,
- (int)key_length, key,
- (uint32_t)expiration);
+ 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= 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)
+ 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 & 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);
}
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)
return rc;
}
-static inline memcached_return binary_delete(memcached_st *ptr,
+static inline memcached_return binary_delete(memcached_st *ptr,
unsigned int server_key,
- const char *key,
+ const char *key,
size_t key_length,
- int flush)
+ uint8_t flush)
{
protocol_binary_request_delete request= {.bytes= {0}};
request.message.header.request.magic= PROTOCOL_BINARY_REQ;
- request.message.header.request.opcode= PROTOCOL_BINARY_CMD_DELETE;
+ 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(key_length);
-
- if ((memcached_do(&ptr->hosts[server_key], request.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, flush) == -1))
+ (memcached_io_write(&ptr->hosts[server_key], key,
+ key_length, (char) flush) == -1))
{
memcached_io_reset(&ptr->hosts[server_key]);
- return MEMCACHED_WRITE_FAILURE;
+ 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 MEMCACHED_SUCCESS;
+ return rc;
}
projects / awesomized / libmemcached / blobdiff