ConfiguredDocument: Warn that sqlite and self-hosting are not supported.
[online-glom:gwt-glom.git] / src / main / java / org / glom / web / server / ConfiguredDocument.java
1 /*
2  * Copyright (C) 2011 Openismus GmbH
3  *
4  * This file is part of GWT-Glom.
5  *
6  * GWT-Glom is free software: you can redistribute it and/or modify it
7  * under the terms of the GNU Lesser General Public License as published by the
8  * Free Software Foundation, either version 3 of the License, or (at your
9  * option) any later version.
10  *
11  * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
14  * for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public License
17  * along with GWT-Glom.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 package org.glom.web.server;
21
22 import java.beans.PropertyVetoException;
23 import java.io.File;
24 import java.sql.Connection;
25 import java.sql.SQLException;
26
27 import org.glom.libglom.Document;
28
29 import com.mchange.v2.c3p0.ComboPooledDataSource;
30
31 /**
32  * A class to hold configuration information for related to the glom document and db access.
33  * 
34  * @author Ben Konrath <ben@bagu.org>
35  * 
36  */
37 final class ConfiguredDocument {
38
39         private Document document;
40         private ComboPooledDataSource cpds;
41         private boolean authenticated = false;
42
43         @SuppressWarnings("unused")
44         private ConfiguredDocument() {
45         }
46
47         public ConfiguredDocument(Document document) throws PropertyVetoException {
48
49                 // load the jdbc driver
50                 cpds = new ComboPooledDataSource();
51                 
52                 // We don't support sqlite or self-hosting yet.
53                 if(document.get_hosting_mode() != Document.HostingMode.HOSTING_MODE_POSTGRES_CENTRAL) {
54                   Log.fatal("Error configuring the database connection."
55                                         + " Only central PostgreSQL hosting is supported.");
56       // FIXME: Throw exception?
57                 }
58                 
59                 try {
60                         cpds.setDriverClass("org.postgresql.Driver");
61                 } catch (PropertyVetoException e) {
62                         Log.fatal("Error loading the PostgreSQL JDBC driver."
63                                         + " Is the PostgreSQL JDBC jar available to the servlet?", e);
64                         throw e;
65                 }
66
67                 // setup the JDBC driver for the current glom document
68                 cpds.setJdbcUrl("jdbc:postgresql://" + document.get_connection_server() + "/"
69                                 + document.get_connection_database());
70
71                 this.document = document;
72         }
73
74         /**
75          * Sets the username and password for the database associated with the Glom document.
76          * 
77          * @return true if the username and password works, false otherwise
78          */
79         boolean setUsernameAndPassword(String username, String password) throws SQLException {
80                 cpds.setUser(username);
81                 cpds.setPassword(password);
82
83                 int acquireRetryAttempts = cpds.getAcquireRetryAttempts();
84                 cpds.setAcquireRetryAttempts(1);
85                 Connection conn = null;
86                 try {
87                         // FIXME find a better way to check authentication
88                         // it's possible that the connection could be failing for another reason
89                         conn = cpds.getConnection();
90                         authenticated = true;
91                 } catch (SQLException e) {
92                         Log.info(getFileName(document.get_file_uri()), e.getMessage());
93                         Log.info(getFileName(document.get_file_uri()), "Connection Failed. Maybe the username or password is not correct.");
94                         authenticated = false;
95                 } finally {
96                         if (conn != null)
97                                 conn.close();
98                         cpds.setAcquireRetryAttempts(acquireRetryAttempts);
99                 }
100                 return authenticated;
101         }
102
103         public Document getDocument() {
104                 return document;
105         }
106
107         public ComboPooledDataSource getCpds() {
108                 return cpds;
109         }
110
111         public boolean isAuthenticated() {
112                 return authenticated;
113         }
114
115         private static String getFileName(String fileURI) {
116                 String[] splitURI = fileURI.split(File.separator);
117                 return splitURI[splitURI.length - 1];
118         }
119
120 }