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globus_i_gass_cache.h
1 /*
2  * Copyright 1999-2006 University of Chicago
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef GLOBUS_DONT_DOCUMENT_INTERNAL
18 
23 #include "globus_symboltable.h"
24 
25 /* defines the environment variable to be used as default cache dir. */
26 #define GLOBUS_L_GASS_CACHE_DEFAULT_DIR_ENV_VAR "GLOBUS_GASS_CACHE_DEFAULT"
27 #define GLOBUS_L_GASS_CACHE_DEBUG "GLOBUS_GASS_CACHE_DEBUG"
28 
29 /* if GLOBUS_L_GASS_CACHE_DEFAULT_DIR_ENV_VAR is not defined in user env. */
30 /* we use $HOME and GLOBUS_L_GASS_CACHE_DEFAULT_DIR_NAME below */
31 /* before V0.9:
32 #define GLOBUS_L_GASS_CACHE_DEFAULT_DIR_NAME "/.globus_gass_cache"
33 */
34 #define GLOBUS_L_DOT_GLOBUS_DIR_NAME "/.globus"
35 #define GLOBUS_L_GASS_CACHE_DEFAULT_DIR_NAME "/.gass_cache"
36 #define GLOBUS_L_GASS_CACHE_GLOBAL_DIR "global"
37 #define GLOBUS_L_GASS_CACHE_LOCAL_DIR "local"
38 #define GLOBUS_L_GASS_CACHE_TMP_DIR "tmp"
39 #define GLOBUS_L_GASS_CACHE_LOG_DIR "log"
40 
41 /* Files are created with 777 and the access restriction is left to umask */
42 #ifdef _WIN32
43 #define GLOBUS_L_GASS_CACHE_MODE_RWX (_S_IRWXU)
44 #define GLOBUS_L_GASS_CACHE_MODE_RW (_S_IRUSR|_S_IWUSR)
45 #else
46 #define GLOBUS_L_GASS_CACHE_MODE_RWX \
47  (S_IRWXU|S_IRWXG|S_IRWXO)
48 #define GLOBUS_L_GASS_CACHE_MODE_RW \
49  (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
50 #endif
51 #define GLOBUS_L_GASS_CACHE_DIR_MODE GLOBUS_L_GASS_CACHE_MODE_RWX
52 #define GLOBUS_L_GASS_CACHE_DATAFILE_MODE GLOBUS_L_GASS_CACHE_MODE_RWX
53 #define GLOBUS_L_GASS_CACHE_UNIQFILE_MODE GLOBUS_L_GASS_CACHE_MODE_RWX
54 #define GLOBUS_L_GASS_CACHE_URLFILE_MODE GLOBUS_L_GASS_CACHE_MODE_RW
55 #define GLOBUS_L_GASS_CACHE_TAGFILE_MODE GLOBUS_L_GASS_CACHE_MODE_RW
56 #define GLOBUS_L_GASS_CACHE_SKEWFILE_MODE GLOBUS_L_GASS_CACHE_MODE_RW
57 
58 /* Length of sleep while waiting for ready */
59 #define LOCK_SLEEP_USEC 500000
60 
61 /* Special file names */
62 #define DATA_FILE "data" /* Name of the data file */
63 #define DATA_FILE_PAT "data" /* Pattern for matching */
64 #define DATA_FILE_PAT_LEN 4 /* It's length */
65 #define UDATA_FILE "data." /* Uniq data file name */
66 #define UDATA_FILE_PAT "data." /* Uniq data file pattern */
67 #define UDATA_FILE_PAT_LEN 5 /* Length of it */
68 #define LOCK_FILE "lock" /* Name of the lock file */
69 #define URL_FILE "url" /* Name of the URL file */
70 #define TAG_FILE "tag" /* Name of the tag file */
71 #define UNIQ_NAME_FORMAT "%s_%lx_%lx"
72 #define UNIQ_NAME_MAX (20 + MAXHOSTNAMELEN) /* Reserved for uniq */
73 /* Largest possible file */
74 #define MAX_FILENAME_LEN ( DATA_FILE_PAT_LEN + UNIQ_NAME_MAX )
75 
76 /* Time limits, etc. */
77 #define LOCK_MAX_SECONDS 30
78 #define LOCK_SLEEP_USEC 500000
79 #define NOTREADY_MAX_SECONDS 300 /* mtime age before NR "broken" */
80 #define NOTREADY_CHECK_SECONDS 10 /* Seconds between NR lock checks. */
81 #define SKEWCALC_SECONDS 3600 /* Seconds between skew calcs. */
82 #define EBUSY_SLEEP_USEC 10000 /* Retry delay after EBUSY */
83 
84 /*
85  * RedHat 6.2 link seems to return ENOENT sometimes even though it
86  * *does* exist & stat() says so. So, we'll stat() it, and, if it does
87  * exist, sleep a bit & try again. These define how long to wait before
88  * the retry, and how many times we're willing to try before giving up.
89 */
90 #define LINKBUG_SLEEP_USEC 50000 /* Sleep before trying link() again */
91 #define LINKBUG_MAX_RETRY 100 /* Max times to retry.. */
92 
93 /* Various functions will keep trying in several cases, but should
94  eventually give up. This controls how many times to try before
95  that.. */
96 #define MAKE_DIRTREE_MAX_TRIES 100
97 #define UNLINK_MAX_TRIES 20
98 #define CREATE_MAX_TRIES 20
99 
100 /* If compilled with LOCK_TOUT defined, the lock will timeout after
101  LOCK_TOUT try to get the lock, if the file to lock is older than
102  LOCK_TOUT*LOOP_TIME
103 
104  LOOPTIME is currently define as 50000 (50ms)
105  If I define LOCK_TOUT 600, I will wait until the lock file and temp file
106  are untouched for more than 30s before I break the lock.*/
107 #define LOCK_TOUT 600
108 
109 #define GLOBUS_L_GASS_CACHE_NULL_TAG "null"
110 
111 
112 
113 /******************************************************************************
114  macro to trace the code during debug phase and to log the cache activity
115 ******************************************************************************/
116 
117 #ifdef DEBUG
118 
119 #define CACHE_TRACE(_f_)\
120  globus_l_gass_cache_trace(__FILE__,__LINE__, (_f_) )
121 #define CACHE_TRACE2(_f_,_a1_)\
122  globus_l_gass_cache_trace(__FILE__,__LINE__, (_f_),(_a1_) )
123 #define CACHE_TRACE3(_f_,_a1_,_a2_)\
124  globus_l_gass_cache_trace(__FILE__,__LINE__, (_f_),(_a1_),(_a2_) )
125 #define CACHE_TRACE4(_f_,_a1_,_a2_,_a3_)\
126  globus_l_gass_cache_trace(__FILE__,__LINE__,\
127  (_f_),(_a1_),(_a2_),(_a3_) )
128 #define CACHE_TRACE5(_f_,_a1_,_a2_,_a3_,_a4_)\
129  globus_l_gass_cache_trace(__FILE__,__LINE__,\
130  (_f_),(_a1_),(_a2_),(_a3_),(_a4_) )
131 
132 #ifdef GLOBUS_L_GASS_CACHE_LOG
133 #define GLOBUS_L_GASS_CACHE_LG(_f_)\
134  globus_l_gass_cache_trace(__FILE__,__LINE__, (_f_) );\
135  globus_l_gass_cache_log(cache_handle->log_FILE, (_f_) )
136 #define GLOBUS_L_GASS_CACHE_LG2(_f_,_a1_)\
137  globus_l_gass_cache_trace(__FILE__,__LINE__, (_f_),(_a1_) );\
138  globus_l_gass_cache_log(cache_handle->log_FILE, (_f_),(_a1_) )
139 #define GLOBUS_L_GASS_CACHE_LG3(_f_,_a1_,_a2_)\
140  globus_l_gass_cache_trace(__FILE__,__LINE__, (_f_),(_a1_),(_a2_) );\
141  globus_l_gass_cache_log(cache_handle->log_FILE, (_f_),(_a1_),(_a2_) )
142 #define GLOBUS_L_GASS_CACHE_LG4(_f_,_a1_,_a2_,_a3_)\
143  globus_l_gass_cache_trace(__FILE__,__LINE__,(_f_),(_a1_),(_a2_),(_a3_) );\
144  globus_l_gass_cache_log(cache_handle->log_FILE,(_f_),(_a1_),(_a2_),(_a3_) )
145 
146 #else
147 #define GLOBUS_L_GASS_CACHE_LG(_f_)
148 #define GLOBUS_L_GASS_CACHE_LG2(_f_,_a1_)
149 #define GLOBUS_L_GASS_CACHE_LG3(_f_,_a1_,_a2_)
150 #define GLOBUS_L_GASS_CACHE_LG4(_f_,_a1_,_a2_,_a3_)
151 #endif
152 
153 #else
154 
155 #define CACHE_TRACE(_f_)
156 #define CACHE_TRACE2(_f_,_a1_)
157 #define CACHE_TRACE3(_f_,_a1_,_a2_)
158 #define CACHE_TRACE4(_f_,_a1_,_a2_,_a3_)
159 #define CACHE_TRACE5(_f_,_a1_,_a2_,_a3_,_a4_)
160 #ifdef GLOBUS_L_GASS_CACHE_LOG
161 #define GLOBUS_L_GASS_CACHE_LG(_f_)\
162  globus_l_gass_cache_log(cache_handle->log_FILE, _f_ );
163 #define GLOBUS_L_GASS_CACHE_LG2(_f_,_a1_)\
164  globus_l_gass_cache_log(cache_handle->log_FILE, (_f_),(_a1_) );
165 #define GLOBUS_L_GASS_CACHE_LG3(_f_,_a1_,_a2_)\
166  globus_l_gass_cache_log(cache_handle->log_FILE,\
167  (_f_),(_a1_),(_a2_) );
168 #define GLOBUS_L_GASS_CACHE_LG4(_f_,_a1_,_a2_,_a3_)\
169  globus_l_gass_cache_log(cache_handle->log_FILE,\
170  (_f_),(_a1_),(_a2_),(_a3_) );
171 #else
172 #define GLOBUS_L_GASS_CACHE_LG(_f_)
173 #define GLOBUS_L_GASS_CACHE_LG2(_f_,_a1_)
174 #define GLOBUS_L_GASS_CACHE_LG3(_f_,_a1_,_a2_)
175 #define GLOBUS_L_GASS_CACHE_LG4(_f_,_a1_,_a2_,_a3_)
176 #endif
177 
178 typedef struct globus_i_gass_cache_t
179 {
180  /* dirty hack to know if this cache has been opened/init. */
181  void* init;
182 
183  /* version number read out of the state file */
184  char *cache_directory_path;
185  char *global_directory_path;
186  char *local_directory_path;
187  char *tmp_directory_path;
188 
189  /* Current lengths */
190  int global_dir_len;
191  int local_dir_len;
192  int tmp_dir_len;
193 
194  /* Max lengths */
195  int max_mangled_url;
196  int max_mangled_tag;
197 
198  /* Valid mangling options */
199  unsigned mangling_options;
200 
201  /* Cache directory type (hierarchial, flat,...) */
202  int cache_type;
203 
204  /* Cache MD5 directory levels (for non flat) */
205  int directory_levels;
206 
207  /* Logging info */
208  FILE* log_FILE;
209  char *log_file_name;
210 }
211 globus_i_gass_cache_t;
212 
213 
214 
215 #endif
216 
217 #endif /* GLOBUS_DONT_DOCUMENT_INTERNAL */
globus_symboltable.h
Lightweight Chaining Symboltable.
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