1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements. See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership. The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the
7  * "License"); you may not use this file except in compliance
8  * with the License. You may obtain a copy of the License at
9  *
10  *   http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing,
13  * software distributed under the License is distributed on an
14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15  * KIND, either express or implied. See the License for the
16  * specific language governing permissions and limitations
17  * under the License.
18  */
19 
20 #ifndef _THRIFT_TLOGGING_H_
21 #define _THRIFT_TLOGGING_H_ 1
22 
23 #include <thrift/thrift-config.h>
24 
25 /**
26  * Contains utility macros for debugging and logging.
27  *
28  */
29 
30 #include <time.h>
31 
32 #ifdef HAVE_STDINT_H
33 #include <stdint.h>
34 #endif
35 
36 /**
37  * T_GLOBAL_DEBUGGING_LEVEL = 0: all debugging turned off, debug macros undefined
38  * T_GLOBAL_DEBUGGING_LEVEL = 1: all debugging turned on
39  */
40 #define T_GLOBAL_DEBUGGING_LEVEL 0
41 
42 /**
43  * T_GLOBAL_LOGGING_LEVEL = 0: all logging turned off, logging macros undefined
44  * T_GLOBAL_LOGGING_LEVEL = 1: all logging turned on
45  */
46 #define T_GLOBAL_LOGGING_LEVEL 1
47 
48 /**
49  * Standard wrapper around fprintf what will prefix the file name and line
50  * number to the line. Uses T_GLOBAL_DEBUGGING_LEVEL to control whether it is
51  * turned on or off.
52  *
53  * @param format_string
54  */
55 #if T_GLOBAL_DEBUGGING_LEVEL > 0
56 #define T_DEBUG(format_string, ...)                                                                \
57   if (T_GLOBAL_DEBUGGING_LEVEL > 0) {                                                              \
58     fprintf(stderr, "[%s,%d] " format_string " \n", __FILE__, __LINE__, ##__VA_ARGS__);            \
59   }
60 #else
61 #define T_DEBUG(format_string, ...)
62 #endif
63 
64 /**
65  * analogous to T_DEBUG but also prints the time
66  *
67  * @param string  format_string input: printf style format string
68  */
69 #if T_GLOBAL_DEBUGGING_LEVEL > 0
70 #define T_DEBUG_T(format_string, ...)                                                              \
71   {                                                                                                \
72     if (T_GLOBAL_DEBUGGING_LEVEL > 0) {                                                            \
73       time_t now;                                                                                  \
74       char dbgtime[26];                                                                            \
75       time(&now);                                                                                  \
76       THRIFT_CTIME_R(&now, dbgtime);                                                               \
77       dbgtime[24] = '\0';                                                                          \
78       fprintf(stderr,                                                                              \
79               "[%s,%d] [%s] " format_string " \n",                                                 \
80               __FILE__,                                                                            \
81               __LINE__,                                                                            \
82               dbgtime,                                                                             \
83               ##__VA_ARGS__);                                                                      \
84     }                                                                                              \
85   }
86 #else
87 #define T_DEBUG_T(format_string, ...)
88 #endif
89 
90 /**
91  * analogous to T_DEBUG but uses input level to determine whether or not the string
92  * should be logged.
93  *
94  * @param int     level: specified debug level
95  * @param string  format_string input: format string
96  */
97 #define T_DEBUG_L(level, format_string, ...)                                                       \
98   if ((level) > 0) {                                                                               \
99     fprintf(stderr, "[%s,%d] " format_string " \n", __FILE__, __LINE__, ##__VA_ARGS__);            \
100   }
101 
102 /**
103  * Explicit error logging. Prints time, file name and line number
104  *
105  * @param string  format_string input: printf style format string
106  */
107 #define T_ERROR(format_string, ...)                                                                \
108   {                                                                                                \
109     time_t now;                                                                                    \
110     char dbgtime[26];                                                                              \
111     time(&now);                                                                                    \
112     THRIFT_CTIME_R(&now, dbgtime);                                                                 \
113     dbgtime[24] = '\0';                                                                            \
114     fprintf(stderr,                                                                                \
115             "[%s,%d] [%s] ERROR: " format_string " \n",                                            \
116             __FILE__,                                                                              \
117             __LINE__,                                                                              \
118             dbgtime,                                                                               \
119             ##__VA_ARGS__);                                                                        \
120   }
121 
122 /**
123  * Analogous to T_ERROR, additionally aborting the process.
124  * WARNING: macro calls abort(), ending program execution
125  *
126  * @param string  format_string input: printf style format string
127  */
128 #define T_ERROR_ABORT(format_string, ...)                                                          \
129   {                                                                                                \
130     time_t now;                                                                                    \
131     char dbgtime[26];                                                                              \
132     time(&now);                                                                                    \
133     THRIFT_CTIME_R(&now, dbgtime);                                                                 \
134     dbgtime[24] = '\0';                                                                            \
135     fprintf(stderr,                                                                                \
136             "[%s,%d] [%s] ERROR: Going to abort " format_string " \n",                             \
137             __FILE__,                                                                              \
138             __LINE__,                                                                              \
139             dbgtime,                                                                               \
140             ##__VA_ARGS__);                                                                        \
141     exit(1);                                                                                       \
142   }
143 
144 /**
145  * Log input message
146  *
147  * @param string  format_string input: printf style format string
148  */
149 #if T_GLOBAL_LOGGING_LEVEL > 0
150 #define T_LOG_OPER(format_string, ...)                                                             \
151   {                                                                                                \
152     if (T_GLOBAL_LOGGING_LEVEL > 0) {                                                              \
153       time_t now;                                                                                  \
154       char dbgtime[26];                                                                            \
155       time(&now);                                                                                  \
156       THRIFT_CTIME_R(&now, dbgtime);                                                               \
157       dbgtime[24] = '\0';                                                                          \
158       fprintf(stderr, "[%s] " format_string " \n", dbgtime, ##__VA_ARGS__);                        \
159     }                                                                                              \
160   }
161 #else
162 #define T_LOG_OPER(format_string, ...)
163 #endif
164 
165 /**
166  * T_GLOBAL_DEBUG_VIRTUAL = 0 or unset: normal operation,
167  *                                      virtual call debug messages disabled
168  * T_GLOBAL_DEBUG_VIRTUAL = 1:          log a debug messages whenever an
169  *                                      avoidable virtual call is made
170  * T_GLOBAL_DEBUG_VIRTUAL = 2:          record detailed info that can be
171  *                                      printed by calling
172  *                                      apache::thrift::profile_print_info()
173  */
174 #if T_GLOBAL_DEBUG_VIRTUAL > 1
175 #define T_VIRTUAL_CALL() ::apache::thrift::profile_virtual_call(typeid(*this))
176 #define T_GENERIC_PROTOCOL(template_class, generic_prot, specific_prot)                            \
177   do {                                                                                             \
178     if (!(specific_prot)) {                                                                        \
179       ::apache::thrift::profile_generic_protocol(typeid(*template_class), typeid(*generic_prot));  \
180     }                                                                                              \
181   } while (0)
182 #elif T_GLOBAL_DEBUG_VIRTUAL == 1
183 #define T_VIRTUAL_CALL() fprintf(stderr, "[%s,%d] virtual call\n", __FILE__, __LINE__)
184 #define T_GENERIC_PROTOCOL(template_class, generic_prot, specific_prot)                            \
185   do {                                                                                             \
186     if (!(specific_prot)) {                                                                        \
187       fprintf(stderr, "[%s,%d] failed to cast to specific protocol type\n", __FILE__, __LINE__);   \
188     }                                                                                              \
189   } while (0)
190 #else
191 #define T_VIRTUAL_CALL()
192 #define T_GENERIC_PROTOCOL(template_class, generic_prot, specific_prot)
193 #endif
194 
195 #endif // #ifndef _THRIFT_TLOGGING_H_
196