Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
SerialClientImpl |
|
| 1.2;1.2 |
1 | /* | |
2 | * #%L | |
3 | * SerialClientImpl.java - mongodb-async-driver - Allanbank Consulting, Inc. | |
4 | * %% | |
5 | * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc. | |
6 | * %% | |
7 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
8 | * you may not use this file except in compliance with the License. | |
9 | * You may obtain a copy of the License at | |
10 | * | |
11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
12 | * | |
13 | * Unless required by applicable law or agreed to in writing, software | |
14 | * distributed under the License is distributed on an "AS IS" BASIS, | |
15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
16 | * See the License for the specific language governing permissions and | |
17 | * limitations under the License. | |
18 | * #L% | |
19 | */ | |
20 | package com.allanbank.mongodb.client; | |
21 | ||
22 | import java.io.Closeable; | |
23 | ||
24 | import com.allanbank.mongodb.Durability; | |
25 | import com.allanbank.mongodb.MongoClientConfiguration; | |
26 | import com.allanbank.mongodb.MongoCursorControl; | |
27 | import com.allanbank.mongodb.MongoDbException; | |
28 | import com.allanbank.mongodb.MongoIterator; | |
29 | import com.allanbank.mongodb.ReadPreference; | |
30 | import com.allanbank.mongodb.StreamCallback; | |
31 | import com.allanbank.mongodb.bson.Document; | |
32 | import com.allanbank.mongodb.bson.DocumentAssignable; | |
33 | import com.allanbank.mongodb.client.connection.Connection; | |
34 | ||
35 | /** | |
36 | * A specialization of the {@link ClientImpl} to always try to use the same | |
37 | * connection. | |
38 | * | |
39 | * @api.no This class is <b>NOT</b> part of the drivers API. This class may be | |
40 | * mutated in incompatible ways between any two releases of the driver. | |
41 | * @copyright 2012-2013, Allanbank Consulting, Inc., All Rights Reserved | |
42 | */ | |
43 | public class SerialClientImpl extends AbstractClient { | |
44 | ||
45 | /** If true then assertions have been enabled for the class. */ | |
46 | protected static final boolean ASSERTIONS_ENABLED; | |
47 | static { | |
48 | 1 | ASSERTIONS_ENABLED = SerialClientImpl.class.desiredAssertionStatus(); |
49 | 1 | } |
50 | ||
51 | /** The current active Connection to the MongoDB Servers. */ | |
52 | private Connection myConnection; | |
53 | ||
54 | /** The delegate client for accessing connections. */ | |
55 | private final ClientImpl myDelegate; | |
56 | ||
57 | /** | |
58 | * Create a new SerialClientImpl. | |
59 | * | |
60 | * @param client | |
61 | * The delegate client for accessing connections. | |
62 | */ | |
63 | 21 | public SerialClientImpl(final ClientImpl client) { |
64 | 21 | myDelegate = client; |
65 | 21 | } |
66 | ||
67 | /** | |
68 | * {@inheritDoc} | |
69 | * <p> | |
70 | * Overridden to close all of the open connections. | |
71 | * </p> | |
72 | * | |
73 | * @see Closeable#close() | |
74 | */ | |
75 | @Override | |
76 | public void close() { | |
77 | 1 | super.close(); |
78 | ||
79 | // Don't close the delegate. | |
80 | 1 | myConnection = null; |
81 | 1 | } |
82 | ||
83 | /** | |
84 | * {@inheritDoc} | |
85 | * <p> | |
86 | * Overridden to return the cluster stats from the delegate client. | |
87 | * </p> | |
88 | */ | |
89 | @Override | |
90 | public ClusterStats getClusterStats() { | |
91 | 0 | return myDelegate.getClusterStats(); |
92 | } | |
93 | ||
94 | /** | |
95 | * {@inheritDoc} | |
96 | * <p> | |
97 | * Overridden to return the {@link ClusterType} of delegate | |
98 | * {@link ClientImpl}. | |
99 | * </p> | |
100 | */ | |
101 | @Override | |
102 | public ClusterType getClusterType() { | |
103 | 1 | return myDelegate.getClusterType(); |
104 | } | |
105 | ||
106 | /** | |
107 | * {@inheritDoc} | |
108 | * <p> | |
109 | * Overridden to return the configuration used when the client was | |
110 | * constructed. | |
111 | * </p> | |
112 | */ | |
113 | @Override | |
114 | public MongoClientConfiguration getConfig() { | |
115 | 1 | return myDelegate.getConfig(); |
116 | } | |
117 | ||
118 | /** | |
119 | * {@inheritDoc} | |
120 | * <p> | |
121 | * Overridden to return the configurations default durability. | |
122 | * </p> | |
123 | * | |
124 | * @see Client#getDefaultDurability() | |
125 | */ | |
126 | @Override | |
127 | public Durability getDefaultDurability() { | |
128 | 2 | return myDelegate.getDefaultDurability(); |
129 | } | |
130 | ||
131 | /** | |
132 | * {@inheritDoc} | |
133 | * <p> | |
134 | * Overridden to return the configurations default read preference. | |
135 | * </p> | |
136 | * | |
137 | * @see Client#getDefaultReadPreference() | |
138 | */ | |
139 | @Override | |
140 | public ReadPreference getDefaultReadPreference() { | |
141 | 1 | return myDelegate.getDefaultReadPreference(); |
142 | } | |
143 | ||
144 | /** | |
145 | * {@inheritDoc} | |
146 | * <p> | |
147 | * Overridden to forward to the delegate client. | |
148 | * </p> | |
149 | * | |
150 | * @see Client#restart(DocumentAssignable) | |
151 | */ | |
152 | @Override | |
153 | public MongoIterator<Document> restart( | |
154 | final DocumentAssignable cursorDocument) | |
155 | throws IllegalArgumentException { | |
156 | 12 | return myDelegate.restart(cursorDocument); |
157 | } | |
158 | ||
159 | /** | |
160 | * {@inheritDoc} | |
161 | * <p> | |
162 | * Overridden to forward to the delegate client. | |
163 | * </p> | |
164 | * | |
165 | * @see Client#restart(StreamCallback, DocumentAssignable) | |
166 | */ | |
167 | @Override | |
168 | public MongoCursorControl restart(final StreamCallback<Document> results, | |
169 | final DocumentAssignable cursorDocument) | |
170 | throws IllegalArgumentException { | |
171 | 12 | return myDelegate.restart(results, cursorDocument); |
172 | } | |
173 | ||
174 | /** | |
175 | * Tries to reuse the last connection used. If the connection it closed or | |
176 | * does not exist then the request is delegated to the {@link ClientImpl} | |
177 | * and the result cached for future requests. | |
178 | * | |
179 | * @return The found connection. | |
180 | * @throws MongoDbException | |
181 | * On a failure to talk to the MongoDB servers. | |
182 | */ | |
183 | @Override | |
184 | protected Connection findConnection(final Message message1, | |
185 | final Message message2) throws MongoDbException { | |
186 | 15 | if ((myConnection == null) || !myConnection.isAvailable()) { |
187 | 12 | myConnection = myDelegate.findConnection(message1, message2); |
188 | } | |
189 | ||
190 | 14 | return myConnection; |
191 | } | |
192 | } |