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Version 105.1 by David Avendasora on 2010/11/29 20:20
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David Avendasora 77.1 1 [[image:WonderJavaMonitor.png||border="1"]]
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3 {{toc}}{{/toc}}
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Pascal Robert 57.1 5 === Introduction ===
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David Avendasora 77.1 7 JavaMonitor is a web-based tool used to configure and maintain deployed WebObjects applications. It is capable of handling multiple WebObjects applications, multiple instances of each application, and multiple WebObjects Applications Servers. In most cases you'll have one instance of JavaMonitor controlling all instances of your applications, even if they are spread across multiple Application Servers.
Pascal Robert 57.1 8
David Avendasora 77.1 9 wotaskd (WebObjects task daemon) is the WebObjects Deployment tool that manages the instances on an Application Server. It's used by Monitor to propagate site configuration changes throughout the site's application hosts.
Pascal Robert 57.1 10
David Avendasora 77.1 11 Apple released the original wotaskd and JavaMonitor to the community as open source in WebObjects 5.4. The source was then quickly modified and included in Project Wonder. Substantial improvements in both functionality and look-and-feel have been made over the years. These improved versions of **wotaskd.woa** and **JavaMonitor.woa** are available as standard Wonder applications.
Pascal Robert 57.1 12
David Avendasora 77.1 13 === Where To Get Them ===
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15 You can either download them pre-built from [[Wonder's Hudson build server>>http://webobjects.mdimension.com/hudson/job/Wonder54/lastSuccessfulBuild/artifact/dist/]] or build them from the source code.
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17 To build them from the [[Wonder source code>>WONDER:Download Wonder Source, Build, Install and Upgrade]], simply run the following command from the Wonder directory at the root of the Wonder source.
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Pascal Robert 57.1 19 {{code}}
David Avendasora 77.1 20 ant frameworks deployment.tools -Dwonder.patch=54 -Ddeployment.standalone=true
21 {{/code}}
Pascal Robert 57.1 22
David Avendasora 77.1 23 {{info title="What this command does:"}}
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25 * *ant*: calls Apache Ant. It is assumed that you have this already installed.
26 * *frameworks*: tells Ant to build the "frameworks" target. This may not be needed if you already have Wonder built and installed in a location Ant can find automatically.
27 * *deployment.tools*: tells Ant to build the "deployment.tools" target. This is the target that builds both wotaskd.woa and JavaMonitor.woa. You absolutely need this one.
28 * *\-Dwonder.patch=54*: tells Wonder to build for WebObjects version 5.4. You need this if you are building against Wonder Trunk. Some branches don't need it, but it doesn't hurt either.
29 * *\-Ddeployment.standalone=true*: argument will embed the required Wonder and WebObjects frameworks in built applications. You need this to ensure that the required frameworks are embedded in the built applications.
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David Avendasora 105.1 31
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David Avendasora 77.1 33 {{/info}}
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David Avendasora 83.1 35 === Major Improvements over Apple's versions ===
David Avendasora 77.1 36
37 ==== Automatic archive of SiteConfig.xml ====
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39 On every change you make to an application's configuration, a backup of SiteConfig.xml will be created in, by default, /Library/WebObjects/Configuration.
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41 ==== Simplified/Automated Bouncing ====
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43 In the "list instances" page, you get a "Bounce" action link. This action only work if you have at least one active instance and one inactive. What it does is :
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David Avendasora 105.1 45 * Find the inactive (eg : not started) instance and start it
46 * Find the active instances (minus the one started the step below) and enable "Refuse New Session"
David Avendasora 77.1 47 * Bounce the active instances when the minimum session count is reached
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49 This feature, from Pascal's understanding, allows you to upload new versions of your application, start up the new version and refuse sessions for the instances running on the older version.
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David Avendasora 105.1 51 {{note title="Database Changes"}}
David Avendasora 77.1 52
53 It is uncertain what will happen if the new version of your application makes changes to your database schema (e.g., uses [ERXMigrations|WO:Project WONDER-Frameworks-ERXMigration]). The old instances may raise exceptions before they can gracefully shut down because the schema no longer matches what the old application's EOF expects. *Try it out on a test server first and then update this page so everyone knows\!*
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David Avendasora 105.1 55 {{/note}}
David Avendasora 77.1 56
57 ==== Statistics ====
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David Avendasora 105.1 59 If you call [[http://monitorhost:port/cgi-bin/WebObjects/JavaMonitor.woa/wa/statistics]], JavaMonitor will send you back statistics, in JSON format, about instances, per application.
David Avendasora 77.1 60
61 {{code title="Statistics Example Results"}}
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Pascal Robert 57.1 63 (
64 {
65 "configuredInstances" = "2";
66 "maxSessions" = "0";
67 "maxAvgIdleTime" = "2.078";
68 "avgTransactions" = "44.0000";
69 "sumSessions" = "0";
70 "avgAvgTransactionTime" = "0.0985000";
71 "refusingInstances" = "0";
72 "avgSessions" = "0.0000";
73 "maxTransactions" = "88";
74 "applicationName" = "AjaxExample";
75 "avgAvgIdleTime" = "1.0390000";
76 "maxAvgTransactionTime" = "0.197";
77 "runningInstances" = "2";
78 "sumTransactions" = "88";
79 },
80 {
81 "configuredInstances" = "2";
82 "maxSessions" = "0";
83 "maxAvgIdleTime" = "325.443";
84 "avgTransactions" = "0.5000";
85 "sumSessions" = "0";
86 "avgAvgTransactionTime" = "0.00000";
87 "refusingInstances" = "0";
88 "avgSessions" = "0.0000";
89 "maxTransactions" = "1";
90 "applicationName" = "AjaxExample2";
91 "avgAvgIdleTime" = "162.7215000";
92 "maxAvgTransactionTime" = "0.0";
93 "runningInstances" = "2";
94 "sumTransactions" = "1";
95 }
96 )
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98 {{/code}}
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Pascal Robert 59.1 100 If JavaMonitor is configured with a password, and I hope you do, pass //pw=monitorpassword// as a argument to the query :
Pascal Robert 57.1 101
David Avendasora 105.1 102 [[http://monitorhost:port/cgi-bin/WebObjects/JavaMonitor.woa/wa/statistics?pw=monitorpassword]]
Pascal Robert 57.1 103
David Avendasora 105.1 104 ==== Direct Actions to many tasks ====
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David Avendasora 105.1 106 You can do most of the standard tasks you do in Monitor by calling direct actions. They are in a different query handler, ///admin//. They follow the same format and use the same query parameters. Those DA can be useful if you need to restart instances or other tasks within ant or other build/deployment systems.
Pascal Robert 57.1 107
David Avendasora 105.1 108 //?type=all// : return details about all applications and instances
109 //?type=app&name=AppName// : return details about all instances of a specific application
110 //?type=ins&name=AppName-InstanceNo// : return details about one specific instance
David Avendasora 101.1 111
David Avendasora 97.1 112 For example, if you want to get details about all instances and applications, you call :
Pascal Robert 57.1 113
David Avendasora 105.1 114 [[http://hostname:56789/cgi-bin/WebObjects/JavaMonitor.woa/admin/info?type=all]]
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David Avendasora 97.1 116 To get details about the //AjaxExample// application :
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David Avendasora 105.1 118 [[http://hostname:56789/cgi-bin/WebObjects/JavaMonitor.woa/admin/info?type=app&name=AjaxExample]]
Pascal Robert 57.1 119
David Avendasora 97.1 120 And for a specific instance :
Pascal Robert 57.1 121
David Avendasora 105.1 122 [[http://hostname:56789/cgi-bin/WebObjects/JavaMonitor.woa/admin/info?type=ins&name=AjaxExample-1]]
Pascal Robert 57.1 123
David Avendasora 105.1 124 The response for the direct actions will either send a JSON array or YES/NO. For example, the query //info// for all instances will return :
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126 {{code}}
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128 [Hudson Build Server for Wonder|http://webobjects.mdimension.com/hudson/job/Wonder54/lastSuccessfulBuild/artifact/dist/]
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130 {{/code}}
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132 List of available direct actions :
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134 ///info// : return details (number of deaths, state, etc.; see above), in JSON, about an instance.
135 ///running// : return YES if the instance is running, NO if not.
136 ///stopped// : return NO if the instance is running, YES if not.
137 ///bounce//: more on it later.
138 ///clearDeaths// : clear the number of deaths (same action as clicking the "Clear deaths" in JavaMonitor)
139 ///turnScheduledOn// : turn scheduling on for an application or instance. Call ///turnScheduledOff// to do the opposite.
140 ///turnRefuseNewSessionsOn// : turn "Refuse new sessions" on, call //turnRefuseNewSessionsOff// to do the opposite.
141 ///turnAutoRecoverOn// : guess what? It activate "Auto recover" And guess again? ///turnAutoRecoverOff// do the opposite
142 ///forceQuit// : force quit an application, might be useful to call it from a monitoring system.
143 ///stop// : stop an application/instance the normal way.
144 ///start// : start an application/instance the normal way.
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David Avendasora 77.1 146 ==== Remote Control via REST Routes ====
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David Avendasora 97.1 148 On September 28th 2010, REST routes were added in JavaMonitor. Those routes + the direct actions explained in this document allow you to control almost everything remotely (make sure that your JavaMonitor installation is secure). As the direct actions, append //?pw=XXXX// to the URLs if JavaMonitor is password protected.
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150 Examples of REST calls :
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David Avendasora 105.1 152 Fetching the details of all applications :
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David Avendasora 105.1 154 {{code}}
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David Avendasora 105.1 156 curl -X GET http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications.json
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Pascal Robert 57.1 158 {{/code}}
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David Avendasora 105.1 160 Adding a new application :
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David Avendasora 105.1 162 {{code}}
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David Avendasora 105.1 164 curl -X POST -d "{id: 'AjaxExample',type: 'MApplication', name: 'AjaxExample',unixOutputPath: '/opt/Local/Library/WebObjects/Logs', unixPath: '/opt/Local/Library/WebObjects/Applications/AjaxExample.woa/AjaxExample'}" http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications.json
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David Avendasora 77.1 166 {{/code}}
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David Avendasora 105.1 168 Adding a new instance :
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David Avendasora 105.1 170 {{code}}
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David Avendasora 105.1 172 curl -X GET http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications/AjaxExample/addInstance&host=localhost
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David Avendasora 77.1 174 {{/code}}
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David Avendasora 105.1 176 Delete an application :
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David Avendasora 105.1 178 {{code}}
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David Avendasora 105.1 180 curl -X DELETE http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications/AjaxExample.json
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David Avendasora 77.1 182 {{/code}}
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David Avendasora 105.1 184 Delete an instance :
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David Avendasora 105.1 186 {{code}}
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David Avendasora 105.1 188 curl -X GET http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications/AjaxExample/deleteInstance?id=1
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David Avendasora 77.1 190 {{/code}}
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David Avendasora 105.1 192 Adding a new host :
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David Avendasora 105.1 194 {{code}}
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David Avendasora 105.1 196 curl -X POST -d "{id: 'otherserver.com',type: 'MHost', osType: 'MACOSX',address: '192.168.20.5', name: 'otherserver.com'}" http://127.0.0.1:56789/apps/WebObjects/JavaMonitor.woa/ra/mHosts.json
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David Avendasora 77.1 198 {{/code}}