GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/sql_impl.h
Date: 2025-06-29 02:35:41
Exec Total Coverage
Lines: 209 240 87.1%
Branches: 211 448 47.1%
Line Branch Exec Source
1 /**
2 * This file is part of the CernVM file system.
3 */
4
5 #ifndef CVMFS_SQL_IMPL_H_
6 #define CVMFS_SQL_IMPL_H_
7
8 #include <fcntl.h>
9
10 #include <cassert>
11 #include <cerrno>
12 #include <string>
13
14 #include "sqlitemem.h"
15 #include "util/logging.h"
16 #include "util/platform.h"
17
18 namespace sqlite {
19
20 template<class DerivedT>
21 10311 Database<DerivedT>::Database(const std::string &filename,
22 const OpenMode open_mode)
23 10311 : database_(filename, this)
24 10311 , read_write_(kOpenReadWrite == open_mode)
25 10311 , schema_version_(0.0f)
26
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 20622 , schema_revision_(0) { }
27
28
29 template<class DerivedT>
30 5380 DerivedT *Database<DerivedT>::Create(const std::string &filename) {
31
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 5380 UniquePtr<DerivedT> database(new DerivedT(filename, kOpenReadWrite));
32
33
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 5380 if (!database.IsValid()) {
34 ✗ LogCvmfs(kLogSql, kLogDebug, "Failed to create new database object");
35 ✗ return NULL;
36 }
37
38 5380 database->set_schema_version(DerivedT::kLatestSchema);
39 5380 database->set_schema_revision(DerivedT::kLatestSchemaRevision);
40
41 5380 const int open_flags = SQLITE_OPEN_NOMUTEX | SQLITE_OPEN_READWRITE
42 | SQLITE_OPEN_CREATE;
43
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 5380 if (!database->OpenDatabase(open_flags)) {
44 ✗ LogCvmfs(kLogSql, kLogDebug, "Failed to create new database file");
45 ✗ return NULL;
46 }
47
48
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 5380 if (!database->CreatePropertiesTable()) {
49 ✗ database->PrintSqlError("Failed to create common properties table");
50 ✗ return NULL;
51 }
52
53
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 5380 if (!database->CreateEmptyDatabase()) {
54 ✗ database->PrintSqlError("Failed to create empty database");
55 ✗ return NULL;
56 }
57
58
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 5380 if (!database->PrepareCommonQueries()) {
59 ✗ database->PrintSqlError("Failed to initialize properties queries");
60 ✗ return NULL;
61 }
62
63
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 5380 if (!database->StoreSchemaRevision()) {
64 ✗ database->PrintSqlError("Failed to store initial schema revision");
65 ✗ return NULL;
66 }
67
68 5380 return database.Release();
69 5380 }
70
71
72 template<class DerivedT>
73 4931 DerivedT *Database<DerivedT>::Open(const std::string &filename,
74 const OpenMode open_mode) {
75
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 4931 UniquePtr<DerivedT> database(new DerivedT(filename, open_mode));
76
77
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 4931 if (!database.IsValid()) {
78 ✗ LogCvmfs(kLogSql, kLogDebug,
79 "Failed to open database file '%s' - errno: %d", filename.c_str(),
80 ✗ errno);
81 ✗ return NULL;
82 }
83
84
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 4931 if (!database->Initialize()) {
85 114 return NULL;
86 }
87
88 4817 return database.Release();
89 4931 }
90
91
92 template<class DerivedT>
93 4931 bool Database<DerivedT>::Initialize() {
94
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 4931 const int flags = (read_write_) ? SQLITE_OPEN_NOMUTEX | SQLITE_OPEN_READWRITE
95 : SQLITE_OPEN_NOMUTEX | SQLITE_OPEN_READONLY;
96
97
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 9840 bool successful = OpenDatabase(flags) && Configure() && FileReadAhead()
98
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 9840 && PrepareCommonQueries();
99
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 4931 if (!successful) {
100 22 LogCvmfs(kLogSql, kLogDebug, "failed to open database file '%s'",
101 22 filename().c_str());
102 22 return false;
103 }
104
105 4909 ReadSchemaRevision();
106 4909 LogCvmfs(kLogSql, kLogDebug,
107 "opened database with schema version %f "
108 "and revision %u",
109 4909 schema_version_, schema_revision_);
110
111
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 4909 if (!static_cast<DerivedT *>(this)->CheckSchemaCompatibility()) {
112 92 LogCvmfs(kLogSql, kLogDebug, "schema version %f not supported (%s)",
113 46 schema_version_, filename().c_str());
114 46 return false;
115 }
116
117 9726 if (read_write_
118
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 4863 && !static_cast<DerivedT *>(this)->LiveSchemaUpgradeIfNecessary()) {
119 46 LogCvmfs(kLogSql, kLogDebug, "failed tp upgrade schema revision");
120 46 return false;
121 }
122
123 4817 return true;
124 }
125
126
127 template<class DerivedT>
128 10311 bool Database<DerivedT>::OpenDatabase(const int flags) {
129 // Open database file (depending on the flags read-only or read-write)
130 10311 LogCvmfs(kLogSql, kLogDebug, "opening database file %s", filename().c_str());
131 10311 int retval = sqlite3_open_v2(filename().c_str(),
132 &database_.sqlite_db,
133 flags | SQLITE_OPEN_EXRESCODE,
134 NULL);
135
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 10311 if (retval != SQLITE_OK) {
136 22 LogCvmfs(kLogSql, kLogDebug, "cannot open database file %s (%d - %d)",
137 22 filename().c_str(), retval, errno);
138 22 return false;
139 }
140
141 10289 return true;
142 }
143
144
145 template<class DerivedT>
146 11172 Database<DerivedT>::DatabaseRaiiWrapper::~DatabaseRaiiWrapper() {
147
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 11172 if (NULL != sqlite_db) {
148 11172 const bool close_successful = Close();
149
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 11172 assert(close_successful);
150 }
151 11172 }
152
153
154 template<class DerivedT>
155 11172 bool Database<DerivedT>::DatabaseRaiiWrapper::Close() {
156
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 11172 assert(NULL != sqlite_db);
157
158
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 22344 LogCvmfs(kLogSql, kLogDebug, "closing SQLite database '%s' (unlink: %s)",
159 22344 filename().c_str(), (db_file_guard.IsEnabled() ? "yes" : "no"));
160 11172 const int result = sqlite3_close(sqlite_db);
161
162
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 11172 if (result != SQLITE_OK) {
163 ✗ LogCvmfs(kLogSql, kLogDebug,
164 "failed to close SQLite database '%s' (%d - %s)",
165 ✗ filename().c_str(), result, delegate_->GetLastErrorMsg().c_str());
166 ✗ return false;
167 }
168
169 11172 sqlite_db = NULL;
170
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 11172 if (lookaside_buffer != NULL) {
171 785 SqliteMemoryManager::GetInstance()->ReleaseLookasideBuffer(
172 lookaside_buffer);
173 785 lookaside_buffer = NULL;
174 }
175 11172 return true;
176 }
177
178
179 template<class DerivedT>
180 4909 bool Database<DerivedT>::Configure() {
181 // Read-only databases should store temporary files in memory. This avoids
182 // unexpected open read-write file descriptors in the cache directory like
183 // etilqs_<number>. They also use the optimized memory manager, if it is
184 // available.
185
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 4909 if (!read_write_) {
186
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 2002 if (SqliteMemoryManager::HasInstance()) {
187 785 database_.lookaside_buffer = SqliteMemoryManager::GetInstance()
188 785 ->AssignLookasideBuffer(sqlite_db());
189 }
190
191
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 4004 return Sql(sqlite_db(), "PRAGMA temp_store=2;").Execute()
192
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 4004 && Sql(sqlite_db(), "PRAGMA locking_mode=EXCLUSIVE;").Execute();
193 }
194 2907 return true;
195 }
196
197
198 template<class DerivedT>
199 4909 bool Database<DerivedT>::FileReadAhead() {
200 // Read-ahead into file system buffers
201 // TODO(jblomer): mmap, re-readahead
202
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 4909 assert(filename().length() > 1);
203 int fd_readahead;
204
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 4909 if (filename()[0] != '@') {
205 4124 fd_readahead = open(filename().c_str(), O_RDONLY);
206
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 4124 if (fd_readahead < 0) {
207 ✗ LogCvmfs(kLogSql, kLogDebug, "failed to open %s for read-ahead (%d)",
208 ✗ filename().c_str(), errno);
209 ✗ return false;
210 }
211 4124 const ssize_t retval = platform_readahead(fd_readahead);
212 4124 close(fd_readahead);
213
214 // Read-ahead is known to fail on tmpfs with EINVAL
215 // EINVAL = "readahead() cannot be applied to that a file type"
216 // It can also fail with ENOSYS on kernel interfaces that do not implement
217 // readahead(), such as LX-Brand zones on illumos.
218 // Don't consider either a fatal error.
219
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 4124 if (retval != 0 && errno != EINVAL && errno != ENOSYS) {
220 ✗ LogCvmfs(kLogSql, kLogDebug | kLogSyslogWarn,
221 "failed to read-ahead %s: invalid file descrp. or not open for "
222 "reading (%d)",
223 ✗ filename().c_str(), errno);
224 ✗ return false;
225 }
226 }
227
228 4909 return true;
229 }
230
231
232 template<class DerivedT>
233 10289 bool Database<DerivedT>::PrepareCommonQueries() {
234 10289 sqlite3 *db = sqlite_db();
235
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 10289 begin_transaction_ = new Sql(db, "BEGIN;");
236
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 10289 commit_transaction_ = new Sql(db, "COMMIT;");
237
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 10289 has_property_ = new Sql(db, "SELECT count(*) FROM properties "
238 "WHERE key = :key;");
239
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 10289 get_property_ = new Sql(db, "SELECT value FROM properties "
240 "WHERE key = :key;");
241
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 10289 set_property_ = new Sql(db, "INSERT OR REPLACE INTO properties "
242 "(key, value) VALUES (:key, :value);");
243
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 20578 return (begin_transaction_.IsValid() && commit_transaction_.IsValid()
244
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 10289 && has_property_.IsValid() && get_property_.IsValid()
245
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 20578 && set_property_.IsValid());
246 }
247
248
249 template<class DerivedT>
250 4909 void Database<DerivedT>::ReadSchemaRevision() {
251
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 9818 schema_version_ = (this->HasProperty(kSchemaVersionKey))
252
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 4909 ? this->GetProperty<double>(kSchemaVersionKey)
253 : 1.0;
254
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 9818 schema_revision_ = (this->HasProperty(kSchemaRevisionKey))
255
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 4909 ? this->GetProperty<int>(kSchemaRevisionKey)
256 : 0;
257 4909 }
258
259
260 template<class DerivedT>
261 5852 bool Database<DerivedT>::StoreSchemaRevision() {
262
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 11704 return this->SetProperty(kSchemaVersionKey, schema_version_)
263
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 17556 && this->SetProperty(kSchemaRevisionKey, schema_revision_);
264 }
265
266
267 template<class DerivedT>
268 4187 bool Database<DerivedT>::BeginTransaction() const {
269
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 4187 return begin_transaction_->Execute() && begin_transaction_->Reset();
270 }
271
272
273 template<class DerivedT>
274 3902 bool Database<DerivedT>::CommitTransaction() const {
275
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 3902 return commit_transaction_->Execute() && commit_transaction_->Reset();
276 }
277
278
279 template<class DerivedT>
280 5380 bool Database<DerivedT>::CreatePropertiesTable() {
281
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 10760 return Sql(sqlite_db(),
282 "CREATE TABLE properties (key TEXT, value TEXT, "
283 "CONSTRAINT pk_properties PRIMARY KEY (key));")
284
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 10760 .Execute();
285 }
286
287
288 template<class DerivedT>
289 22234 bool Database<DerivedT>::HasProperty(const std::string &key) const {
290
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 22234 assert(has_property_.IsValid());
291 22234 const bool retval = has_property_->BindText(1, key)
292
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 22234 && has_property_->FetchRow();
293
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 22234 assert(retval);
294 22234 const bool result = has_property_->RetrieveInt64(0) > 0;
295 22234 has_property_->Reset();
296 22234 return result;
297 }
298
299 template<class DerivedT>
300 template<typename T>
301 34002 T Database<DerivedT>::GetProperty(const std::string &key) const {
302
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 34002 assert(get_property_.IsValid());
303 34002 const bool retval = get_property_->BindText(1, key)
304
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 34002 && get_property_->FetchRow();
305
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 34002 assert(retval);
306 34002 const T result = get_property_->Retrieve<T>(0);
307
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 34002 get_property_->Reset();
308 34002 return result;
309 }
310
311 template<class DerivedT>
312 template<typename T>
313 11278 T Database<DerivedT>::GetPropertyDefault(const std::string &key,
314 const T default_value) const {
315
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 11278 return (HasProperty(key)) ? GetProperty<T>(key) : default_value;
316 }
317
318 template<class DerivedT>
319 template<typename T>
320 46574 bool Database<DerivedT>::SetProperty(const std::string &key, const T value) {
321
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 46574 assert(set_property_.IsValid());
322
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 93148 return set_property_->BindText(1, key) && set_property_->Bind(2, value)
323
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 93148 && set_property_->Execute() && set_property_->Reset();
324 }
325
326 template<class DerivedT>
327 ✗ std::string Database<DerivedT>::GetLastErrorMsg() const {
328 ✗ std::string msg = sqlite3_errmsg(sqlite_db());
329 ✗ return msg;
330 }
331
332
333 template<class DerivedT>
334 1883 void Database<DerivedT>::TakeFileOwnership() {
335 1883 database_.TakeFileOwnership();
336 1883 LogCvmfs(kLogSql, kLogDebug, "Database object took ownership of '%s'",
337 1883 database_.filename().c_str());
338 1883 }
339
340
341 template<class DerivedT>
342 149 void Database<DerivedT>::DropFileOwnership() {
343 149 database_.DropFileOwnership();
344 149 LogCvmfs(kLogSql, kLogDebug, "Database object dropped ownership of '%s'",
345 149 database_.filename().c_str());
346 149 }
347
348
349 template<class DerivedT>
350 506 unsigned Database<DerivedT>::GetModifiedRowCount() const {
351 506 const int modified_rows = sqlite3_total_changes(sqlite_db());
352
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 506 assert(modified_rows >= 0);
353 506 return static_cast<unsigned>(modified_rows);
354 }
355
356 /**
357 * Ask SQlite for per-connection memory statistics
358 */
359 template<class DerivedT>
360 11 void Database<DerivedT>::GetMemStatistics(MemStatistics *stats) const {
361 11 const int reset = 0;
362 int current;
363 int highwater;
364 11 int retval = SQLITE_OK;
365
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_LOOKASIDE_USED,
366 &current, &highwater, reset);
367 11 stats->lookaside_slots_used = current;
368 11 stats->lookaside_slots_max = highwater;
369
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_LOOKASIDE_HIT,
370 &current, &highwater, reset);
371 11 stats->lookaside_hit = highwater;
372
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE,
373 &current, &highwater, reset);
374 11 stats->lookaside_miss_size = highwater;
375
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL,
376 &current, &highwater, reset);
377 11 stats->lookaside_miss_full = highwater;
378
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_CACHE_USED, &current,
379 &highwater, reset);
380 11 stats->page_cache_used = current;
381
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_CACHE_HIT, &current,
382 &highwater, reset);
383 11 stats->page_cache_hit = current;
384
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_CACHE_MISS, &current,
385 &highwater, reset);
386 11 stats->page_cache_miss = current;
387
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_SCHEMA_USED,
388 &current, &highwater, reset);
389 11 stats->schema_used = current;
390
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 11 retval |= sqlite3_db_status(sqlite_db(), SQLITE_DBSTATUS_STMT_USED, &current,
391 &highwater, reset);
392 11 stats->stmt_used = current;
393
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 11 assert(retval == SQLITE_OK);
394 11 }
395
396
397 template<class DerivedT>
398 1357 double Database<DerivedT>::GetFreePageRatio() const {
399
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 2714 Sql free_page_count_query(this->sqlite_db(), "PRAGMA freelist_count;");
400
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 2714 Sql page_count_query(this->sqlite_db(), "PRAGMA page_count;");
401
402
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 1357 const bool retval = page_count_query.FetchRow()
403
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 1357 && free_page_count_query.FetchRow();
404
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 1357 assert(retval);
405
406
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 1357 const int64_t pages = page_count_query.RetrieveInt64(0);
407
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 1357 const int64_t free_pages = free_page_count_query.RetrieveInt64(0);
408
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 1357 assert(pages > 0);
409
410 1357 return (static_cast<double>(free_pages) / static_cast<double>(pages));
411 1357 }
412
413
414 template<class DerivedT>
415 496 bool Database<DerivedT>::Vacuum() const {
416
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 496 assert(read_write_);
417 716 return static_cast<const DerivedT *>(this)->CompactDatabase()
418
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 496 && Sql(this->sqlite_db(), "VACUUM;").Execute();
419 }
420
421
422 template<class DerivedT>
423 ✗ void Database<DerivedT>::PrintSqlError(const std::string &error_msg) {
424 ✗ LogCvmfs(kLogSql, kLogStderr, "%s\nSQLite said: '%s'", error_msg.c_str(),
425 this->GetLastErrorMsg().c_str());
426 }
427
428 template<class DerivedT>
429 const float Database<DerivedT>::kSchemaEpsilon = 0.0005;
430 template<class DerivedT>
431 const char *Database<DerivedT>::kSchemaVersionKey = "schema";
432 template<class DerivedT>
433 const char *Database<DerivedT>::kSchemaRevisionKey = "schema_revision";
434
435
436 //
437 // # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
438 //
439
440
441 template<>
442 1880 inline bool Sql::Bind(const int index, const int &value) {
443 1880 return this->BindInt64(index, value);
444 }
445
446 template<>
447 6172 inline bool Sql::Bind(const int index, const unsigned int &value) {
448 6172 return this->BindInt64(index, static_cast<int>(value));
449 }
450
451 template<>
452 4320 inline bool Sql::Bind(const int index, const uint64_t &value) {
453 4320 return this->BindInt64(index, static_cast<int64_t>(value));
454 }
455
456 template<>
457 inline bool Sql::Bind(const int index, const sqlite3_int64 &value) {
458 return this->BindInt64(index, value);
459 }
460
461 template<>
462 5223 inline bool Sql::Bind(const int index, const std::string &value) {
463 5223 return this->BindTextTransient(index, value);
464 }
465
466 template<>
467 5852 inline bool Sql::Bind(const int index, const float &value) {
468 5852 return this->BindDouble(index, value);
469 }
470
471 template<>
472 184 inline bool Sql::Bind(const int index, const double &value) {
473 184 return this->BindDouble(index, value);
474 }
475
476
477 template<>
478 6230 inline int Sql::Retrieve(const int index) {
479 6230 return static_cast<int>(this->RetrieveInt64(index));
480 }
481
482 template<>
483 ✗ inline bool Sql::Retrieve(const int index) {
484 ✗ return static_cast<bool>(this->RetrieveInt(index));
485 }
486
487 template<>
488 inline sqlite3_int64 Sql::Retrieve(const int index) {
489 return this->RetrieveInt64(index);
490 }
491
492 template<>
493 2341 inline uint64_t Sql::Retrieve(const int index) {
494 2341 return static_cast<uint64_t>(this->RetrieveInt64(index));
495 }
496
497 template<>
498 4579 inline std::string Sql::Retrieve(const int index) {
499 4579 return RetrieveString(index);
500 }
501
502 template<>
503 184 inline float Sql::Retrieve(const int index) {
504 184 return static_cast<float>(this->RetrieveDouble(index));
505 }
506
507 template<>
508 5093 inline double Sql::Retrieve(const int index) {
509 5093 return this->RetrieveDouble(index);
510 }
511
512 } // namespace sqlite
513
514 #endif // CVMFS_SQL_IMPL_H_
515