Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
StartDocker |
|
| 1.5;1.5 |
1 | 0 | /** |
2 | * Copyright (c) 2014-2015, Thindeck.com | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: 1) Redistributions of source code must retain the above | |
8 | * copyright notice, this list of conditions and the following | |
9 | * disclaimer. 2) Redistributions in binary form must reproduce the above | |
10 | * copyright notice, this list of conditions and the following | |
11 | * disclaimer in the documentation and/or other materials provided | |
12 | * with the distribution. 3) Neither the name of the thindeck.com nor | |
13 | * the names of its contributors may be used to endorse or promote | |
14 | * products derived from this software without specific prior written | |
15 | * permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT | |
19 | * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
20 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
22 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
26 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
28 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 | */ | |
30 | package com.thindeck.agents; | |
31 | ||
32 | import com.jcabi.aspects.Immutable; | |
33 | import com.jcabi.immutable.ArrayMap; | |
34 | import com.jcabi.log.Logger; | |
35 | import com.jcabi.xml.XML; | |
36 | import com.thindeck.api.Agent; | |
37 | import java.io.IOException; | |
38 | import java.security.SecureRandom; | |
39 | import java.util.Collection; | |
40 | import java.util.Random; | |
41 | import org.xembly.Directive; | |
42 | import org.xembly.Directives; | |
43 | ||
44 | /** | |
45 | * Start containers. | |
46 | * | |
47 | * @author Yegor Bugayenko (yegor@teamed.io) | |
48 | * @version $Id$ | |
49 | * @since 0.1 | |
50 | * @checkstyle MultipleStringLiteralsCheck (500 lines) | |
51 | */ | |
52 | @Immutable | |
53 | public final class StartDocker implements Agent { | |
54 | ||
55 | /** | |
56 | * Random. | |
57 | */ | |
58 | 0 | private static final Random RND = new SecureRandom(); |
59 | ||
60 | /** | |
61 | * Script to use. | |
62 | */ | |
63 | private final transient Script script; | |
64 | ||
65 | /** | |
66 | * Ctor. | |
67 | * @throws IOException If fails | |
68 | */ | |
69 | public StartDocker() throws IOException { | |
70 | 0 | this( |
71 | new Script.Default( | |
72 | StartDocker.class.getResource("start-docker.sh") | |
73 | ) | |
74 | ); | |
75 | 0 | } |
76 | ||
77 | /** | |
78 | * Ctor. | |
79 | * @param spt Script. | |
80 | */ | |
81 | 0 | public StartDocker(final Script spt) { |
82 | 0 | this.script = spt; |
83 | 0 | } |
84 | ||
85 | @Override | |
86 | public Iterable<Directive> exec(final XML deck) throws IOException { | |
87 | 0 | final Collection<XML> images = deck.nodes( |
88 | "/deck/images/image[not(@waste)]" | |
89 | ); | |
90 | 0 | final Directives dirs = new Directives() |
91 | .xpath("/deck").addIf("containers"); | |
92 | 0 | for (final XML image : images) { |
93 | 0 | final String img = image.xpath("name/text()").get(0); |
94 | 0 | final Collection<String> tanks = deck.xpath( |
95 | String.format( | |
96 | // @checkstyle LineLength (1 line) | |
97 | "/deck/tanks/tank[not(host=/deck/containers/container[not(@waste) and image='%s']/host)]/host/text()", | |
98 | img | |
99 | ) | |
100 | ); | |
101 | 0 | for (final String tank : tanks) { |
102 | 0 | Logger.info( |
103 | this, | |
104 | "There are no Docker containers at %s for image %s yet", | |
105 | tank, img | |
106 | ); | |
107 | 0 | final String cid = this.start(img, tank); |
108 | 0 | dirs.xpath("/deck/containers").add("container") |
109 | .add("name").set(cid).up() | |
110 | .add("image").set(img).up() | |
111 | .add("host").set(tank).up() | |
112 | .attr("state", "unknown") | |
113 | .attr("type", image.xpath("@type").get(0)); | |
114 | 0 | } |
115 | 0 | } |
116 | 0 | return dirs; |
117 | } | |
118 | ||
119 | /** | |
120 | * Run docker in this tank. | |
121 | * @param image Docker image name | |
122 | * @param host Host name of the tank | |
123 | * @return Docker container name | |
124 | * @throws IOException If fails | |
125 | */ | |
126 | private String start(final String image, final String host) | |
127 | throws IOException { | |
128 | 0 | final String name = String.format("%08x", StartDocker.RND.nextInt()); |
129 | 0 | final long start = System.currentTimeMillis(); |
130 | 0 | this.script.exec( |
131 | host, | |
132 | new ArrayMap<String, String>() | |
133 | .with("image", image) | |
134 | .with("container", name) | |
135 | ); | |
136 | 0 | Logger.info( |
137 | this, "Docker container %s started at %s in %[ms]s", | |
138 | name, host, | |
139 | System.currentTimeMillis() - start | |
140 | ); | |
141 | 0 | return name; |
142 | } | |
143 | ||
144 | } |