Merge in conversion to C++.

[awesomized/libmemcached] / libmemcached / flush.cc

diff --git a/libmemcached/flush.cc b/libmemcached/flush.cc
new file mode 100644 (file)
index 0000000..6a1364c
--- /dev/null
+++ b/libmemcached/flush.cc
@@ -0,0 +1,149 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  Libmemcached library
+ *
+ *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
+ *
+ *  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>
+
+static memcached_return_t memcached_flush_binary(memcached_st *ptr, 
+                                                 time_t expiration);
+static memcached_return_t memcached_flush_textual(memcached_st *ptr, 
+                                                  time_t expiration);
+
+memcached_return_t memcached_flush(memcached_st *ptr, time_t expiration)
+{
+  memcached_return_t rc;
+  if (memcached_failed(rc= initialize_query(ptr)))
+  {
+    return rc;
+  }
+
+  LIBMEMCACHED_MEMCACHED_FLUSH_START();
+  if (ptr->flags.binary_protocol)
+    rc= memcached_flush_binary(ptr, expiration);
+  else
+    rc= memcached_flush_textual(ptr, expiration);
+  LIBMEMCACHED_MEMCACHED_FLUSH_END();
+  return rc;
+}
+
+static memcached_return_t memcached_flush_textual(memcached_st *ptr, 
+                                                  time_t expiration)
+{
+  unlikely (memcached_server_count(ptr) == 0)
+    return MEMCACHED_NO_SERVERS;
+
+  for (unsigned int x= 0; x < memcached_server_count(ptr); x++)
+  {
+    memcached_return_t rc;
+    char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
+
+    bool no_reply= ptr->flags.no_reply;
+    memcached_server_write_instance_st instance=
+      memcached_server_instance_fetch(ptr, x);
+
+    int send_length;
+    if (expiration)
+    {
+      send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, 
+                            "flush_all %llu%s\r\n",
+                            (unsigned long long)expiration, no_reply ? " noreply" : "");
+    }
+    else
+    {
+      send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, 
+                            "flush_all%s\r\n", no_reply ? " noreply" : "");
+    }
+
+    if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE || send_length < 0)
+    {
+      return MEMCACHED_FAILURE;
+    }
+
+    rc= memcached_do(instance, buffer, (size_t)send_length, true);
+
+    if (rc == MEMCACHED_SUCCESS && !no_reply)
+      (void)memcached_response(instance, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
+  }
+
+  return MEMCACHED_SUCCESS;
+}
+
+static memcached_return_t memcached_flush_binary(memcached_st *ptr, 
+                                                 time_t expiration)
+{
+  protocol_binary_request_flush request= {};
+
+  unlikely (memcached_server_count(ptr) == 0)
+    return MEMCACHED_NO_SERVERS;
+
+  request.message.header.request.magic= (uint8_t)PROTOCOL_BINARY_REQ;
+  request.message.header.request.opcode= PROTOCOL_BINARY_CMD_FLUSH;
+  request.message.header.request.extlen= 4;
+  request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
+  request.message.header.request.bodylen= htonl(request.message.header.request.extlen);
+  request.message.body.expiration= htonl((uint32_t) expiration);
+
+  for (uint32_t x= 0; x < memcached_server_count(ptr); x++)
+  {
+    memcached_server_write_instance_st instance=
+      memcached_server_instance_fetch(ptr, x);
+
+    if (ptr->flags.no_reply)
+    {
+      request.message.header.request.opcode= PROTOCOL_BINARY_CMD_FLUSHQ;
+    }
+    else
+    {
+      request.message.header.request.opcode= PROTOCOL_BINARY_CMD_FLUSH;
+    }
+
+    if (memcached_do(instance, request.bytes, sizeof(request.bytes), true) != MEMCACHED_SUCCESS) 
+    {
+      memcached_io_reset(instance);
+      return MEMCACHED_WRITE_FAILURE;
+    } 
+  }
+
+  for (uint32_t x= 0; x < memcached_server_count(ptr); x++)
+  {
+    memcached_server_write_instance_st instance=
+      memcached_server_instance_fetch(ptr, x);
+
+    if (memcached_server_response_count(instance) > 0)
+      (void)memcached_response(instance, NULL, 0, NULL);
+  }
+
+  return MEMCACHED_SUCCESS;
+}