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Version 117.1 by David Avendasora on 2010/11/29 20:02
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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.
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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.
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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.
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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
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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 113.1 33 {{/info}}
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David Avendasora 115.1 35 === Major Improvements over Apple's versions ===
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David Avendasora 115.1 37 ==== Statistics ====
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David Avendasora 113.1 39 If you call [[http://monitorhost:port/cgi-bin/WebObjects/JavaMonitor.woa/wa/statistics]], the answer send you back statistics, in JSON format, about instances, per application. Sample :
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David Avendasora 113.1 41 {{code}}
David Avendasora 77.1 42
Pascal Robert 57.1 43 (
44 {
45 "configuredInstances" = "2";
46 "maxSessions" = "0";
47 "maxAvgIdleTime" = "2.078";
48 "avgTransactions" = "44.0000";
49 "sumSessions" = "0";
50 "avgAvgTransactionTime" = "0.0985000";
51 "refusingInstances" = "0";
52 "avgSessions" = "0.0000";
53 "maxTransactions" = "88";
54 "applicationName" = "AjaxExample";
55 "avgAvgIdleTime" = "1.0390000";
56 "maxAvgTransactionTime" = "0.197";
57 "runningInstances" = "2";
58 "sumTransactions" = "88";
59 },
60 {
61 "configuredInstances" = "2";
62 "maxSessions" = "0";
63 "maxAvgIdleTime" = "325.443";
64 "avgTransactions" = "0.5000";
65 "sumSessions" = "0";
66 "avgAvgTransactionTime" = "0.00000";
67 "refusingInstances" = "0";
68 "avgSessions" = "0.0000";
69 "maxTransactions" = "1";
70 "applicationName" = "AjaxExample2";
71 "avgAvgIdleTime" = "162.7215000";
72 "maxAvgTransactionTime" = "0.0";
73 "runningInstances" = "2";
74 "sumTransactions" = "1";
75 }
76 )
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David Avendasora 113.1 78 {{/code}}
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David Avendasora 113.1 80 If JavaMonitor is configured with a password, and I hope you do, pass //pw=monitorpassword// as a argument to the query :
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David Avendasora 113.1 82 [[http://monitorhost:port/cgi-bin/WebObjects/JavaMonitor.woa/wa/statistics?pw=monitorpassword]]
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David Avendasora 115.1 84 ==== Direct Actions to many tasks ====
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David Avendasora 113.1 86 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.
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David Avendasora 113.1 88 //?type=all// : return details about all applications and instances
89 //?type=app&name=AppName// : return details about all instances of a specific application
90 //?type=ins&name=AppName-InstanceNo// : return details about one specific instance
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David Avendasora 97.1 92 For example, if you want to get details about all instances and applications, you call :
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David Avendasora 113.1 94 [[http://hostname:56789/cgi-bin/WebObjects/JavaMonitor.woa/admin/info?type=all]]
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David Avendasora 113.1 96 To get details about the //AjaxExample// application :
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David Avendasora 113.1 98 [[http://hostname:56789/cgi-bin/WebObjects/JavaMonitor.woa/admin/info?type=app&name=AjaxExample]]
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David Avendasora 97.1 100 And for a specific instance :
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David Avendasora 113.1 102 [[http://hostname:56789/cgi-bin/WebObjects/JavaMonitor.woa/admin/info?type=ins&name=AjaxExample-1]]
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David Avendasora 113.1 104 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 :
David Avendasora 105.1 105
David Avendasora 113.1 106 {{code}}
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David Avendasora 105.1 108 [Hudson Build Server for Wonder|http://webobjects.mdimension.com/hudson/job/Wonder54/lastSuccessfulBuild/artifact/dist/]
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David Avendasora 113.1 110 {{/code}}
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David Avendasora 105.1 112 List of available direct actions :
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David Avendasora 113.1 114 ///info// : return details (number of deaths, state, etc.; see above), in JSON, about an instance.
115 ///running// : return YES if the instance is running, NO if not.
116 ///stopped// : return NO if the instance is running, YES if not.
117 ///bounce//: more on it later.
118 ///clearDeaths// : clear the number of deaths (same action as clicking the "Clear deaths" in JavaMonitor)
119 ///turnScheduledOn// : turn scheduling on for an application or instance. Call ///turnScheduledOff// to do the opposite.
120 ///turnRefuseNewSessionsOn// : turn "Refuse new sessions" on, call //turnRefuseNewSessionsOff// to do the opposite.
121 ///turnAutoRecoverOn// : guess what? It activate "Auto recover" And guess again? ///turnAutoRecoverOff// do the opposite
122 ///forceQuit// : force quit an application, might be useful to call it from a monitoring system.
123 ///stop// : stop an application/instance the normal way.
124 ///start// : start an application/instance the normal way.
David Avendasora 105.1 125
David Avendasora 115.1 126 ==== Automatic archive of SiteConfig.xml ====
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David Avendasora 113.1 128 On every change you do to the configuration, a backup of SiteConfig.xml will be done in, by default, /Library/WebObjects/Configuration.
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David Avendasora 115.1 130 ==== Simplified/Automated Bouncing ====
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132 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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134 * Find the inactive (eg : not started) instance and start it
135 * Find the active instances (minus the one started the step below) and enable "Refuse New Session"
136 * Bounce the active instances when the minimum session count is reached
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138 This feature, from my understanding, allow you to upload new versions of your app, start up the new version and refuse sessions for the instances running on the older version. I don't know how this will work if your new version use migrations to change your schema (eg : old instances might raise exceptions because of database schema changes), so try it out on a test server before and put your results here.
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David Avendasora 115.1 140 ==== Remote Control via REST Routes ====
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142 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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David Avendasora 77.1 144 Examples of REST calls :
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David Avendasora 111.1 146 Fetching the details of all applications :
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148 {{code}}
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David Avendasora 109.1 150 curl -X GET http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications.json
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David Avendasora 113.1 152 {{/code}}
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David Avendasora 111.1 154 Adding a new application :
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David Avendasora 113.1 156 {{code}}
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David Avendasora 109.1 158 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 113.1 160 {{/code}}
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David Avendasora 111.1 162 Adding a new instance :
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David Avendasora 113.1 164 {{code}}
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David Avendasora 111.1 166 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 113.1 168 {{/code}}
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David Avendasora 111.1 170 Delete an application :
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David Avendasora 113.1 172 {{code}}
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David Avendasora 105.1 174 curl -X DELETE http://127.0.0.1:56789/cgi-bin/WebObjects/JavaMonitor.woa/ra/mApplications/AjaxExample.json
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David Avendasora 113.1 176 {{/code}}
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David Avendasora 111.1 178 Delete an instance :
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David Avendasora 113.1 180 {{code}}
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David Avendasora 111.1 182 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 113.1 184 {{/code}}
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David Avendasora 111.1 186 Adding a new host :
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David Avendasora 113.1 188 {{code}}
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David Avendasora 111.1 190 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 113.1 192 {{/code}}