X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fmemcached_get.c;h=63a981e11ae13b9604ca7d948e8e2ad96b4c6c11;hb=6f50a6acc95303396a8a073c3746cdff83df2301;hp=80423e6b56ff443b9d6ca28a3dd96b2f2e9bd703;hpb=311bd0fafe1da7b5cc770a2ff4fac5472a801a40;p=awesomized%2Flibmemcached

diff --git a/lib/memcached_get.c b/lib/memcached_get.c
index 80423e6b..63a981e1 100644
--- a/lib/memcached_get.c
+++ b/lib/memcached_get.c
@@ -1,179 +1,44 @@
 #include "common.h"
 #include "memcached_io.h"
 
-static memcached_return memcached_value_fetch(memcached_st *ptr, char *key, size_t *key_length, 
-                                              memcached_string_st *value,
-                                              uint16_t *flags,
-                                              uint64_t *cas,
-                                              unsigned int server_key)
-{
-  memcached_return rc;
-  char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
-  char *string_ptr;
-  char *end_ptr;
-
-  end_ptr= buffer + MEMCACHED_DEFAULT_COMMAND_SIZE;
-
-  if (flags)
-    *flags= 0;
-
-  memcached_string_reset(value);
-
-  rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
-
-
-  if (rc == MEMCACHED_SUCCESS)
-  {
-    char *next_ptr;
-    size_t value_length;
-
-    string_ptr= buffer;
-    string_ptr+= 6; /* "VALUE " */
-
-    /* We load the key */
-    if (key)
-    {
-      *key_length= 0;
-
-      for (; isalnum(*string_ptr); string_ptr++)
-      {
-        *key= *string_ptr;
-        key++;
-        (*key_length)++;
-      }
-    }
-    else /* Skip characters */
-      for (; isalnum(*string_ptr); string_ptr++);
-
-    if (end_ptr == string_ptr)
-        goto read_error;
-
-    /* Flags fetch move past space */
-    string_ptr++;
-    if (end_ptr == string_ptr)
-        goto read_error;
-    for (next_ptr= string_ptr; isdigit(*string_ptr); string_ptr++);
-    if (flags)
-      *flags= (uint16_t)strtol(next_ptr, &string_ptr, 10);
-
-    if (end_ptr == string_ptr)
-        goto read_error;
-
-    /* Length fetch move past space*/
-    string_ptr++;
-    if (end_ptr == string_ptr)
-        goto read_error;
-
-    for (next_ptr= string_ptr; isdigit(*string_ptr); string_ptr++);
-    value_length= (size_t)strtoll(next_ptr, &string_ptr, 10);
-
-    if (end_ptr == string_ptr)
-        goto read_error;
-
-    /* Skip spaces */
-    if (*string_ptr == '\r')
-    {
-      /* Skip past the \r\n */
-      string_ptr+= 2;
-    }
-    else
-    {
-      string_ptr++;
-      for (next_ptr= string_ptr; isdigit(*string_ptr); string_ptr++);
-      if (cas)
-        *cas= (size_t)strtoll(next_ptr, &string_ptr, 10);
-    }
-
-    if (end_ptr < string_ptr)
-        goto read_error;
-
-    if (value_length)
-    {
-      size_t read_length;
-      size_t to_read;
-      char *value_ptr;
-
-      /* We add two bytes so that we can walk the \r\n */
-      rc= memcached_string_check(value, value_length+2);
-      if (rc != MEMCACHED_SUCCESS)
-      {
-        value_length= 0;
-        return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
-      }
-
-      value_ptr= memcached_string_value(value);
-      read_length= 0;
-      /* 
-        We read the \r\n into the string since not doing so is more 
-        cycles then the waster of memory to do so.
-
-        We are null terminating through, which will most likely make
-        some people lazy about using the return length.
-      */
-      to_read= (value_length) + 2;
-
-      read_length= memcached_io_read(ptr, server_key,
-                                     value_ptr, to_read);
-
-      if (read_length != (size_t)(value_length + 2))
-      {
-        goto read_error;
-      }
-
-      /* This next bit blows the API, but this is internal....*/
-      {
-        char *char_ptr;
-        char_ptr= memcached_string_value(value);;
-        char_ptr[value_length]= 0;
-        char_ptr[value_length + 1]= 0;
-        memcached_string_set_length(value, value_length);
-      }
-
-      return MEMCACHED_SUCCESS;
-    }
-  }
-
-  return rc;
-
-read_error:
-  return MEMCACHED_PARTIAL_READ;
-}
-
 /* 
   What happens if no servers exist?
 */
 char *memcached_get(memcached_st *ptr, char *key, size_t key_length, 
                     size_t *value_length, 
-                    uint16_t *flags,
+                    uint32_t *flags,
                     memcached_return *error)
+{
+  return memcached_get_by_key(ptr, NULL, 0, key, key_length, value_length, 
+                              flags, error);
+}
+
+char *memcached_get_by_key(memcached_st *ptr, 
+                           char *master_key, size_t master_key_length, 
+                           char *key, size_t key_length, 
+                           size_t *value_length, 
+                           uint32_t *flags,
+                           memcached_return *error)
 {
   char *value;
-  char *dummy_value;
-  size_t dummy_length;
-  uint16_t dummy_flags;
-  memcached_return dummy_error;
 
   /* Request the key */
-  *error= memcached_mget(ptr, &key, &key_length, 1);
+  *error= memcached_mget_by_key(ptr, 
+                                master_key, 
+                                master_key_length, 
+                                &key, &key_length, 1);
 
   value= memcached_fetch(ptr, NULL, NULL, 
                          value_length, flags, error);
 
+  /* This is for historical reasons */
   if (*error == MEMCACHED_END)
     *error= MEMCACHED_NOTFOUND;
 
   if (value == NULL)
     return NULL;
 
-  /* We do a second read to clean the cursor */
-  dummy_value= memcached_fetch(ptr, NULL, NULL, 
-                               &dummy_length, &dummy_flags, 
-                               &dummy_error);
-
-  /* Something is really wrong if this happens */
-  WATCHPOINT_ASSERT(dummy_value == NULL);
-  if (dummy_value)
-    free(dummy_value);
+  memcached_finish(ptr);
 
   return value;
 }
@@ -181,11 +46,20 @@ char *memcached_get(memcached_st *ptr, char *key, size_t key_length,
 memcached_return memcached_mget(memcached_st *ptr, 
                                 char **keys, size_t *key_length, 
                                 unsigned int number_of_keys)
+{
+  return memcached_mget_by_key(ptr, NULL, 0, keys, key_length, number_of_keys);
+}
+
+memcached_return memcached_mget_by_key(memcached_st *ptr, 
+                                       char *master_key, size_t master_key_length,
+                                       char **keys, size_t *key_length, 
+                                       unsigned int number_of_keys)
 {
   unsigned int x;
   memcached_return rc= MEMCACHED_NOTFOUND;
   char *get_command= "get ";
-  uint8_t get_command_length= 4
+  uint8_t get_command_length= 4;
+  unsigned int master_server_key= 0;
 
   LIBMEMCACHED_MEMCACHED_MGET_START();
   ptr->cursor_server= 0;
@@ -204,11 +78,21 @@ memcached_return memcached_mget(memcached_st *ptr,
 
   memcached_finish(ptr);
 
+  if (master_key && master_key_length)
+    master_server_key= memcached_generate_hash(ptr, master_key, master_key_length);
+
+  /* 
+    If a server fails we warn about errors and start all over with sending keys
+    to the server.
+  */
   for (x= 0; x < number_of_keys; x++)
   {
     unsigned int server_key;
 
-    server_key= memcached_generate_hash(ptr, keys[x], key_length[x]);
+    if (master_server_key)
+      server_key= master_server_key;
+    else
+      server_key= memcached_generate_hash(ptr, keys[x], key_length[x]);
 
     if (ptr->hosts[server_key].cursor_active == 0)
     {
@@ -216,7 +100,6 @@ memcached_return memcached_mget(memcached_st *ptr,
 
       if ((memcached_io_write(ptr, server_key, get_command, get_command_length, 0)) == -1)
       {
-        memcached_quit_server(ptr, server_key);
         rc= MEMCACHED_SOME_ERRORS;
         continue;
       }
@@ -226,7 +109,6 @@ memcached_return memcached_mget(memcached_st *ptr,
     if ((memcached_io_write(ptr, server_key, keys[x], key_length[x], 0)) == -1)
     {
       ptr->hosts[server_key].cursor_active= 0;
-      memcached_quit_server(ptr, server_key);
       rc= MEMCACHED_SOME_ERRORS;
       continue;
     }
@@ -234,7 +116,6 @@ memcached_return memcached_mget(memcached_st *ptr,
     if ((memcached_io_write(ptr, server_key, " ", 1, 0)) == -1)
     {
       ptr->hosts[server_key].cursor_active= 0;
-      memcached_quit_server(ptr, server_key);
       rc= MEMCACHED_SOME_ERRORS;
       continue;
     }
@@ -250,7 +131,6 @@ memcached_return memcached_mget(memcached_st *ptr,
       /* We need to doo something about non-connnected hosts in the future */
       if ((memcached_io_write(ptr, x, "\r\n", 2, 1)) == -1)
       {
-        memcached_quit_server(ptr, x);
         rc= MEMCACHED_SOME_ERRORS;
       }
     }
@@ -259,117 +139,3 @@ memcached_return memcached_mget(memcached_st *ptr,
   LIBMEMCACHED_MEMCACHED_MGET_END();
   return rc;
 }
-
-char *memcached_fetch(memcached_st *ptr, char *key, size_t *key_length, 
-                    size_t *value_length, 
-                    uint16_t *flags,
-                    memcached_return *error)
-{
-  memcached_string_st *result_buffer;
-  result_buffer= &ptr->result_buffer;
-
-  while (ptr->cursor_server < ptr->number_of_hosts)
-  {
-    if (!ptr->hosts[ptr->cursor_server].cursor_active)
-    {
-      ptr->cursor_server++;
-      continue;
-    }
-
-    *error = memcached_value_fetch(ptr, key, key_length, result_buffer, 
-                                   flags, NULL, ptr->cursor_server);
-    *value_length= memcached_string_length(result_buffer);
-    
-    if (*error == MEMCACHED_END) /* END means that we move on to the next */
-    {
-      ptr->hosts[ptr->cursor_server].cursor_active= 0;
-      ptr->cursor_server++;
-      continue;
-    }
-    else if (*error == MEMCACHED_SUCCESS)
-      return  memcached_string_c_copy(result_buffer);
-    else
-      return NULL;
-  }
-
-  ptr->cursor_server= 0;
-  *value_length= 0;
-  return NULL;
-}
-
-memcached_result_st *memcached_fetch_result(memcached_st *ptr, 
-                                            memcached_result_st *result,
-                                            memcached_return *error)
-{
-  if (result == NULL)
-    result= memcached_result_create(ptr, NULL);
-
-  WATCHPOINT_ASSERT(result->value.is_allocated != MEMCACHED_USED);
-
-  while (ptr->cursor_server < ptr->number_of_hosts)
-  {
-    if (!ptr->hosts[ptr->cursor_server].cursor_active)
-    {
-      ptr->cursor_server++;
-      continue;
-    }
-
-    result->cas= 0; /* We do this so we do not send in any junk */
-    *error= memcached_value_fetch(ptr, result->key, &result->key_length, 
-                                       &result->value, 
-                                       &result->flags,
-                                       &result->cas,
-                                       ptr->cursor_server);
-    
-    if (*error == MEMCACHED_END) /* END means that we move on to the next */
-    {
-      ptr->hosts[ptr->cursor_server].cursor_active= 0;
-      ptr->cursor_server++;
-      continue;
-    }
-    else if (*error == MEMCACHED_SUCCESS)
-      return result;
-    else
-      return NULL;
-  }
-
-  /* An error has occurred */
-  if (result->is_allocated == MEMCACHED_ALLOCATED)
-    memcached_result_free(result);
-  else
-    memcached_string_reset(&result->value);
-
-  ptr->cursor_server= 0;
-  return NULL;
-}
-
-memcached_return memcached_finish_server(memcached_st *ptr, unsigned int server_key)
-{
-  memcached_return rc;
-  memcached_string_st *result_buffer;
-
-  result_buffer= &ptr->result_buffer;
-
-  rc= MEMCACHED_SUCCESS;
-  while (rc == MEMCACHED_SUCCESS)
-  {
-    rc= memcached_value_fetch(ptr, NULL, NULL, result_buffer, 
-                               NULL, NULL, server_key);
-  }
-  ptr->hosts[server_key].cursor_active= 0;
-
-  return rc;
-}
-
-void memcached_finish(memcached_st *ptr)
-{
-  unsigned int x;
-
-  for (x= 0; x < ptr->number_of_hosts; x++)
-  {
-    if (ptr->hosts[x].cursor_active)
-      (void)memcached_finish_server(ptr, x);
-  }
-
-  ptr->cursor_server= 0;
-}