Drizzled Public API Documentation

memc_behavior_get.cc
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4  * Copyright (C) 2009, Patrick "CaptTofu" Galbraith, Padraig O'Sullivan
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31 
32 #include <config.h>
33 #include <drizzled/item/func.h>
34 #include <drizzled/function/str/strfunc.h>
35 
36 #include "memcached_functions.h"
37 #include "memc_behavior_get.h"
38 
39 #include <libmemcached/memcached.h>
40 
41 #include <string>
42 #include <algorithm>
43 
44 using namespace std;
45 using namespace drizzled;
46 
47 void MemcachedBehaviorGet::setFailureString(const char *error)
48 {
49  size_t size= strlen(error);
50  failure_buff.realloc(size);
51  failure_buff.length(size);
52  memcpy(failure_buff.ptr(), error, size);
53 }
54 
56 {
57  String *tmp_behavior;
58 
59  if (arg_count != 1 ||
60  ! (tmp_behavior= args[0]->val_str(str)) ||
61  ! memc)
62  {
63  setFailureString("USAGE: memc_behavior_get('<behavior type>')");
64  return &failure_buff;
65  }
66 
67  /*
68  * We don't want the user to have to type in all input in upper
69  * case so we transform the input strings to upper case here.
70  */
71 
72  memcached_behavior* it = find_ptr(behavior_map, boost::to_upper_copy(string(tmp_behavior->c_ptr())));
73  if (not it)
74  {
75  setFailureString("UNKNOWN BEHAVIOR TYPE!");
76  return &failure_buff;
77  }
78 
79  memcached_behavior mbehavior= *it;
80 
81  uint64_t isetting= memcached_behavior_get(memc, mbehavior);
82 
83  switch (mbehavior)
84  {
85  case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
86  case MEMCACHED_BEHAVIOR_NO_BLOCK:
87  case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
88  case MEMCACHED_BEHAVIOR_USER_DATA:
89  case MEMCACHED_BEHAVIOR_SORT_HOSTS:
90  case MEMCACHED_BEHAVIOR_VERIFY_KEY:
91  case MEMCACHED_BEHAVIOR_TCP_NODELAY:
92  case MEMCACHED_BEHAVIOR_KETAMA:
93  case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
94  if (isetting == 1)
95  return_buff.append("1");
96  else if (isetting == 0)
97  return_buff.append("0");
98  else
99  {
100  setFailureString("INVALID VALUE FOR BEHAVIOR - MUST be 1 OR 0!");
101  return &failure_buff;
102  }
103  break;
104  case MEMCACHED_BEHAVIOR_DISTRIBUTION:
105  {
106  string setting(dist_settings_reverse_map[isetting]);
107  return_buff.append(setting.c_str());
108  }
109  break;
110  case MEMCACHED_BEHAVIOR_HASH:
111  {
112  string setting(hash_settings_reverse_map[isetting]);
113  return_buff.append(setting.c_str());
114  }
115  break;
116  case MEMCACHED_BEHAVIOR_KETAMA_HASH:
117  {
118  string setting(ketama_hash_settings_reverse_map[isetting]);
119  return_buff.append(setting.c_str());
120  }
121  break;
122  case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
123  case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
124  case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
125  case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
126  case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
127  case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK:
128  case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK:
129  {
130  size_t setting_len= 0;
131  char tmp_buff[16];
132 
133  snprintf(tmp_buff, 16, "%"PRIu64, isetting);
134  setting_len= strlen(tmp_buff);
135  return_buff.realloc(setting_len);
136  return_buff.length(setting_len);
137  memcpy(return_buff.ptr(),tmp_buff, setting_len);
138  }
139  break;
140  default:
141  break;
142  }
143 
144  return &return_buff;
145 }