Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLDatabase.h @ 134:cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 08 May 2019 20:21:13 +0200 |
| parents | 714c5d2bee76 |
| children | 4cd7e45b671e |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 67 | 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #pragma once | |
| 23 | |
| 24 #if ORTHANC_ENABLE_POSTGRESQL != 1 | |
| 25 # error PostgreSQL support must be enabled to use this file | |
| 26 #endif | |
| 27 | |
| 28 #include "PostgreSQLParameters.h" | |
| 29 #include "../Common/IDatabase.h" | |
| 30 | |
| 31 namespace OrthancDatabases | |
| 32 { | |
| 33 class PostgreSQLDatabase : public IDatabase | |
| 34 { | |
| 35 private: | |
| 36 friend class PostgreSQLStatement; | |
| 37 friend class PostgreSQLLargeObject; | |
| 38 | |
| 39 PostgreSQLParameters parameters_; | |
| 40 void* pg_; /* Object of type "PGconn*" */ | |
| 41 | |
| 42 void ThrowException(bool log); | |
| 43 | |
| 44 void Close(); | |
| 45 | |
|
134
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
46 bool RunAdvisoryLockStatement(const std::string& statement); |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
47 |
| 0 | 48 public: |
| 49 PostgreSQLDatabase(const PostgreSQLParameters& parameters) : | |
| 50 parameters_(parameters), | |
| 51 pg_(NULL) | |
| 52 { | |
| 53 } | |
| 54 | |
|
46
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
23
diff
changeset
|
55 ~PostgreSQLDatabase(); |
| 0 | 56 |
| 57 void Open(); | |
| 58 | |
|
134
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
59 bool AcquireAdvisoryLock(int32_t lock); |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
60 |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
61 bool ReleaseAdvisoryLock(int32_t lock); |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
62 |
|
12
41543239072d
transactions for storage area
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
63 void AdvisoryLock(int32_t lock); |
|
41543239072d
transactions for storage area
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
64 |
| 0 | 65 void Execute(const std::string& sql); |
| 66 | |
| 67 bool DoesTableExist(const char* name); | |
| 68 | |
| 69 void ClearAll(); // Only for unit tests! | |
| 70 | |
| 71 virtual Dialect GetDialect() const | |
| 72 { | |
| 73 return Dialect_PostgreSQL; | |
| 74 } | |
| 75 | |
| 76 virtual IPrecompiledStatement* Compile(const Query& query); | |
| 77 | |
|
23
b2ff1cd2907a
handling of implicit transactions in DatabaseManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
12
diff
changeset
|
78 virtual ITransaction* CreateTransaction(bool isImplicit); |
|
134
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
79 |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
80 class TransientAdvisoryLock |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
81 { |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
82 private: |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
83 PostgreSQLDatabase& database_; |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
84 int32_t lock_; |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
85 |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
86 public: |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
87 TransientAdvisoryLock(PostgreSQLDatabase& database, |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
88 int32_t lock); |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
89 |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
90 ~TransientAdvisoryLock(); |
|
cc3dc759c989
Added an advisory lock to avoid race conditions during database setup
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
67
diff
changeset
|
91 }; |
| 0 | 92 }; |
| 93 } |