1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229

/*
 * Copyright (c) 2010, Cybera and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Cybera or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * This software is provided by the copyright holders and contributors "as
 * is" and any express or implied warranties, including, but not limited to,
 * the implied warranties of merchantability and fitness for a particular
 * purpose are disclaimed.  In no event shall the copyright owner or
 * contributors be liable for any direct, indirect, incidental, special,
 * exemplary, or consequential damages (including, but not limited to,
 * procurement of substitute goods or services; loss of use, data, or
 * profits; or business interruption) however caused and on any theory of
 * liability, whether in contract, strict liability, or tort (including
 * negligence or otherwise) arising in any way out of the use of this
 * software, even if advised of the possibility of such damage.
 */ 
package org.cybera;

import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import org.cybera.ssh.SSH;

import com.xerox.amazonws.ec2.AttachmentInfo;
import com.xerox.amazonws.ec2.ImageDescription;
import com.xerox.amazonws.ec2.Jec2;
import com.xerox.amazonws.ec2.LaunchConfiguration;
import com.xerox.amazonws.ec2.ReservationDescription;
import com.xerox.amazonws.ec2.VolumeInfo;
import com.xerox.amazonws.ec2.ReservationDescription.Instance;

public class TypicaTutorial {
	public static final String ATTACHED = "attached";
	public static final String AVAILABLE = "available";

	private static final String MOUNT_POINT = "/volume1";
	private static final String EUCALYPTUS_URL = "ecc.eucalyptus.com";
	
	private Properties props = new Properties();
	private List<String> owners = new ArrayList<String>();
	private String sudo = "";
	private Jec2 cloud = null;
	
	public static void main(String[] args) throws Exception {
		TypicaTutorial typicaTutorial = new TypicaTutorial(args[0]);
		typicaTutorial.start(args[0]);
	}
	
	public TypicaTutorial(String arg) throws Exception {
		props.load(TypicaTutorial.class.getClassLoader().getResourceAsStream(arg.trim() + ".properties"));
		owners.add(props.getProperty("cloud.username").trim());
		sudo = props.getProperty("vmAuth.sudo").trim();
		
		if ("euca".equals(arg)) {
			cloud = new Jec2(props.getProperty("cloud.accessId").trim(), props.getProperty("cloud.secretKey").trim(), false, props.getProperty("cloud.URL").trim(), 8773);
			cloud.setResourcePrefix("/services/Eucalyptus"); 
			cloud.setSignatureVersion(1);
		}
		else {
			cloud = new Jec2(props.getProperty("cloud.accessId").trim(), props.getProperty("cloud.secretKey").trim());
		}
		
		System.out.println(arg + " " + props);		
	}
	
	private void start(String arg) throws Exception {		
		describeImages();
		Instance instance = runInstance(arg);
		AttachmentInfo volumeAttachmentInfo = createAttachAndMountVolume(instance);
		
		doInterestingStuff(instance);
		
		unmountDetachAndDeleteVolume(instance, volumeAttachmentInfo);
		terminateInstance(instance);
	}

	private void doInterestingStuff(Instance instance) throws Exception {		
		try {
			SSH.runCommandOnInstance("ping -c 1 google.com", instance, props);
		} catch (Exception e) {
			// print the error but continue on so the instance gets cleaned up
			e.printStackTrace();
		}		
	}

	private void describeImages() throws Exception {
		List<ImageDescription> images = cloud.describeImagesByOwner(owners);
		
		for (ImageDescription image : images) {
			System.out.println("Image ID = " + image.getImageId() + ", Owner = " + image.getImageOwnerId());
		}		
	}
	
	private Instance runInstance(String arg) throws Exception {
		LaunchConfiguration launchConfig = new LaunchConfiguration(props.getProperty("launchConfig.imageID").trim());
		launchConfig.setAvailabilityZone(props.getProperty("launchConfig.availabilityZone").trim());
		launchConfig.setKeyName(props.getProperty("launchConfig.keyName").trim());
		launchConfig.setMinCount(Integer.valueOf(props.getProperty("launchConfig.minCount").trim()));
		launchConfig.setMaxCount(Integer.valueOf(props.getProperty("launchConfig.maxCount").trim()));

		ReservationDescription reservationDescription = cloud.runInstances(launchConfig);
		Instance instance = reservationDescription.getInstances().get(0);
		String[] instances = new String[] {instance.getInstanceId()};

		// wait for the instance to start running 
		do {
			instance = cloud.describeInstances(instances).get(0).getInstances().get(0);
			
			System.out.println("Run: Instance ID = " + instance.getInstanceId() + ", State = " + instance.getState());
			
			Thread.sleep(5000);
		} while (!instance.isRunning());
		
		System.out.println("Run: Instance ID = " + instance.getInstanceId() + ", Public DNS Name = " + instance.getDnsName() + ", Private DNS Name = " + instance.getPrivateDnsName());		
		
		// takes some time for SSH to start on the VMs so sleep for a bit or we get a connection refused
		System.out.println("SSH: waiting for SSH on VM to start");
		Thread.sleep(30000); 
		
		return instance;
	}

	private AttachmentInfo createAttachAndMountVolume(Instance instance) throws Exception {
		if (EUCALYPTUS_URL.equals(props.getProperty("cloud.URL"))) {
			System.out.println("Create: Cannot create storage volumes on ECC :(");
			return null;
		}
		
		VolumeInfo volumeInfo = cloud.createVolume("2", null, props.getProperty("launchConfig.availabilityZone").trim());
		String[] volumes = new String[] {volumeInfo.getVolumeId()};

		// wait for the volume to be created
		do {
			volumeInfo = cloud.describeVolumes(volumes).get(0);
			
			System.out.println("Create: Volume ID = " + volumeInfo.getVolumeId() + ", State = " + volumeInfo.getStatus());
			
			Thread.sleep(2000);
		} while (!AVAILABLE.equals(volumeInfo.getStatus().toLowerCase()));

		AttachmentInfo volumeAttachmentInfo = cloud.attachVolume(volumeInfo.getVolumeId(), instance.getInstanceId(), props.getProperty("attachVolume.deviceName").trim());
		
		// wait for the volume to be attached
		do {
			List<AttachmentInfo> volumeAttachmentInfos = cloud.describeVolumes(volumes).get(0).getAttachmentInfo();
			
			volumeAttachmentInfo = volumeAttachmentInfos.get(0);
			
			System.out.println("Attach: Volume ID = " + volumeAttachmentInfo.getVolumeId() + ", State = " + volumeAttachmentInfo.getStatus());
			
			Thread.sleep(2000);
		} while (!ATTACHED.equals(volumeAttachmentInfo.getStatus().toLowerCase()));
		
		ArrayList<String> commandStrs = new ArrayList<String>();
		commandStrs.add(sudo + " mkfs.ext3 -F -q " + props.getProperty("attachVolume.deviceName").trim());
		commandStrs.add(sudo + " mkdir " + MOUNT_POINT);
		commandStrs.add(sudo + " mount " + props.getProperty("attachVolume.deviceName").trim() + " " + MOUNT_POINT);
		
		try {
			SSH.runCommandsOnInstance(commandStrs, instance, props);
		} catch (Exception e) {
			// print the error but continue on so the instance gets cleaned up
			e.printStackTrace();
		}		
		
		return volumeAttachmentInfo;
	}

	private void unmountDetachAndDeleteVolume(Instance instance, AttachmentInfo volumeAttachmentInfo) throws Exception {
		if (EUCALYPTUS_URL.equals(props.getProperty("cloud.URL"))) {
			System.out.println("Delete: Cannot create storage volumes on ECC :(");
			return;
		}
		
		try {
			SSH.runCommandOnInstance(sudo + " umount " + MOUNT_POINT, instance, props);
		} catch (Exception e) {
			// print the error but continue on so the instance gets cleaned up
			e.printStackTrace();
		}		
		
		cloud.detachVolume(volumeAttachmentInfo.getVolumeId(), volumeAttachmentInfo.getInstanceId(), volumeAttachmentInfo.getDevice(), false);
		String[] volumes = new String[] {volumeAttachmentInfo.getVolumeId()};
		VolumeInfo volumeInfo;

		// wait for the volume to detach
		do {
			volumeInfo = cloud.describeVolumes(volumes).get(0);
			
			System.out.println("Detach: Volume ID = " + volumeInfo.getVolumeId() + ", State = " + volumeInfo.getStatus());
			
			Thread.sleep(2000);
		} while (!AVAILABLE.equals(volumeInfo.getStatus().toLowerCase()));
		
		// don't wait for the volume to delete as this can take some time and it's not necessary to wait to move forward
		cloud.deleteVolume(volumeAttachmentInfo.getVolumeId());

		System.out.println("Delete: Volume ID = " + volumeInfo.getVolumeId() + ", State = deleting");
	}

	private void terminateInstance(Instance instance) throws Exception {
		String[] instances = new String[] {instance.getInstanceId()};

		try {
			// don't wait for the instance to terminate as this can take some time and it's not necessary to wait to move forward
			cloud.terminateInstances(instances);
		} catch (NullPointerException e) {
			 // the call to terminate the instance goes through but it looks like Eucalyptus returns a null value and typica chokes on it, ignore it
			 // see http://code.google.com/p/typica/issues/detail?id=105
		}

		System.out.println("Terminate: Instance ID = " + instance.getInstanceId() + ", State = shutting-down");
	}
}