2 /**************************************************************************
3 ** (c) Copyright 2002, Andromeda Technology & Automation
4 ** This is free software; you can redistribute it and/or modify it under the
5 ** terms of the GNU General Public License, see the file COPYING.
6 ***************************************************************************
7 ** MODULE INFORMATION *
8 ***********************
9 ** FILE NAME : database.cpp
10 ** SYSTEM NAME : Gnucomo - Gnu Computer Monitoring
11 ** VERSION NUMBER : $Revision: 1.12 $
13 ** DESCRIPTION : Implementation of the gnucomo database classes
18 ***************************************************************************
19 ** ADMINISTRATIVE INFORMATION *
20 ********************************
21 ** ORIGINAL AUTHOR : Arjen Baart - arjen@andromeda.nl
22 ** CREATION DATE : Sep 10, 2002
23 ** LAST UPDATE : Aug 17, 2003
25 **************************************************************************/
27 /*****************************
28 $Log: database.cpp,v $
29 Revision 1.12 2003-12-22 10:28:26 arjen
30 Catch an exception if we can not setup a database transaction.
32 Revision 1.11 2003/12/04 10:40:28 arjen
33 Fixed name conflict with 'double log(double)'
35 Revision 1.10 2003/12/03 08:23:17 arjen
36 Write messages to the log stream instead of cout.
38 Revision 1.9 2003/08/17 11:39:56 arjen
39 Changed the gnucomo_database class to the new PostgreSQL
42 Revision 1.8 2003/07/31 15:44:02 arjen
45 Revision 1.7 2003/02/19 12:07:55 arjen
46 Use the SQL function currval() to obtain the identification number
47 of the most recently created notification.
49 Revision 1.6 2003/02/05 09:33:42 arjen
50 gnucomo_database::new_notification() retruns the id number of the
51 newly created notification record.
53 Revision 1.5 2003/01/20 07:31:42 arjen
54 Removed some debug output.
56 Revision 1.4 2003/01/18 08:52:32 arjen
57 New C++ function: gnucomo_database::new_notification()
59 Revision 1.3 2002/11/09 08:04:27 arjen
60 Added a reference to the GPL
62 Revision 1.2 2002/11/04 10:13:36 arjen
63 Use proper namespace for iostream classes
65 Revision 1.1 2002/10/05 10:25:49 arjen
66 Creation of gcm_input and a first approach to a web interface
68 *****************************/
70 static const char *RCSID = "$Id: database.cpp,v 1.12 2003-12-22 10:28:26 arjen Exp $";
76 extern std::ostream *Log;
78 /*=========================================================================
79 ** NAME : gnucomo_database
80 ** SYNOPSIS : gnucomo_database(gnucomo_config &c);
82 ** RETURN VALUE : Database constructor. Establishes a connection with
83 ** the database server.
91 ** LAST MODIFIED : Aug 17, 2003
92 **=========================================================================
95 static int gdb_refcount = 0;
97 gnucomo_database::gnucomo_database(gnucomo_config *c)
101 dbconn = new pqxx::Connection(cfg->Database());
103 if (!dbconn->is_open())
105 std::cerr << "Connection to database failed.\n";
111 // Create the transaction object
113 dbxact = new pqxx::Transaction(*dbconn, "GnuCoMo");
115 catch (std::exception &e)
117 *Log << "Cannot setup the database transaction: " << e.what() << "\n";
118 *Log << "You are probably using incompatible versions of PostgreSQL an libpqxx.\n";
125 gnucomo_database::gnucomo_database(const gnucomo_database &gdb)
132 void gnucomo_database::operator = (const gnucomo_database &gdb)
139 // A destructor must Commit the transaction and
140 // destroy the transaction before destroying the
142 // The connection can only be destroyed by the last
145 gnucomo_database::~gnucomo_database()
147 if (--gdb_refcount == 0 && dbconn != 0 && dbxact != 0)
157 /*=========================================================================
159 ** SYNOPSIS : String gnucomo_database::find_host(String hostname);
161 ** RETURN VALUE : Find a hostname in the 'object' table of the gnucomo database
162 ** and return its object id.
163 ** Return an empty string as objectid if the hostname is
172 ** LAST MODIFIED : Aug 15, 2003
173 **=========================================================================
176 String gnucomo_database::find_host(const String hostname)
179 String check_host("select objectid from object where ");
181 check_host += "objectname = '";
182 check_host += hostname;
185 if (Query(check_host) > 0)
187 objectid = Field(0, "objectid");
194 * Create a new notification with an action_user and return the notification id
197 String gnucomo_database::new_notification(String objectid, String issue, String remark)
207 *Log << "Creating notification for " << issue << ": " << remark << "\n";
209 qry = "select type_of_issueid, suggested_priority from type_of_issue where name='";
213 issueid = Field(0, "type_of_issueid");
214 insertion = "insert into notification (objectid, type_of_issueid, timestamp, ";
215 insertion += " statuscode, priority) values ('";
216 insertion += objectid + "', '";
217 insertion += issueid + "', '" + now.format("%Y-%m-%d %T") + "', 'new', '";
218 insertion += Field(0, "suggested_priority") + "')";
222 Query("select currval('notification_notificationid_seq')");
223 notif_id = Field(0, "currval");
227 insertion = "insert into action_user (actionid, username, notificationid,";
228 insertion += " timestamp, statuscode, remarks) values ('1', 'gnucomo', '";
229 insertion += notif_id + "', '" + now.format("%Y-%m-%d %T") + "', 'new', '";
230 insertion += remark + "')";
236 std::cerr << "Error inserting notification.\n";
241 std::cerr << "DATABASE ERROR: Type of issue " << issue << " not found.\n";