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| <span dir="auto">SMILA/Project Concepts/Generic Management And Monitoring Concept</span> |
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| <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div id="toc" class="toc"><div id="toctitle"><h2>Contents</h2></div> |
| <ul> |
| <li class="toclevel-1 tocsection-1"><a href="Generic_Management_And_Monitoring_Concept.html#Description"><span class="tocnumber">1</span> <span class="toctext">Description</span></a></li> |
| <li class="toclevel-1 tocsection-2"><a href="Generic_Management_And_Monitoring_Concept.html#Discussion"><span class="tocnumber">2</span> <span class="toctext">Discussion</span></a></li> |
| <li class="toclevel-1 tocsection-3"><a href="Generic_Management_And_Monitoring_Concept.html#Technical_proposal"><span class="tocnumber">3</span> <span class="toctext">Technical proposal</span></a> |
| <ul> |
| <li class="toclevel-2 tocsection-4"><a href="Generic_Management_And_Monitoring_Concept.html#Current_SMILA_Modules"><span class="tocnumber">3.1</span> <span class="toctext">Current SMILA Modules</span></a> |
| <ul> |
| <li class="toclevel-3 tocsection-5"><a href="Generic_Management_And_Monitoring_Concept.html#Performance_Counters_Module_Architecture"><span class="tocnumber">3.1.1</span> <span class="toctext">Performance Counters Module Architecture</span></a></li> |
| <li class="toclevel-3 tocsection-6"><a href="Generic_Management_And_Monitoring_Concept.html#Management_Module_Architecture"><span class="tocnumber">3.1.2</span> <span class="toctext">Management Module Architecture</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-2 tocsection-7"><a href="Generic_Management_And_Monitoring_Concept.html#Issues"><span class="tocnumber">3.2</span> <span class="toctext">Issues</span></a> |
| <ul> |
| <li class="toclevel-3 tocsection-8"><a href="Generic_Management_And_Monitoring_Concept.html#Performance_Counters_Module_issues"><span class="tocnumber">3.2.1</span> <span class="toctext">Performance Counters Module issues</span></a></li> |
| <li class="toclevel-3 tocsection-9"><a href="Generic_Management_And_Monitoring_Concept.html#Management_Module_issues"><span class="tocnumber">3.2.2</span> <span class="toctext">Management Module issues</span></a></li> |
| <li class="toclevel-3 tocsection-10"><a href="Generic_Management_And_Monitoring_Concept.html#Common_issues"><span class="tocnumber">3.2.3</span> <span class="toctext">Common issues</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-2 tocsection-11"><a href="Generic_Management_And_Monitoring_Concept.html#Proposal"><span class="tocnumber">3.3</span> <span class="toctext">Proposal</span></a> |
| <ul> |
| <li class="toclevel-3 tocsection-12"><a href="Generic_Management_And_Monitoring_Concept.html#Agent_with_Counters"><span class="tocnumber">3.3.1</span> <span class="toctext">Agent with Counters</span></a></li> |
| <li class="toclevel-3 tocsection-13"><a href="Generic_Management_And_Monitoring_Concept.html#Usage"><span class="tocnumber">3.3.2</span> <span class="toctext">Usage</span></a></li> |
| <li class="toclevel-3 tocsection-14"><a href="Generic_Management_And_Monitoring_Concept.html#Category_Tree_Construction_.2F_Registration"><span class="tocnumber">3.3.3</span> <span class="toctext">Category Tree Construction / Registration</span></a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| |
| <h2><span class="mw-headline" id="Description">Description</span></h2> |
| <p>Currently SMILA uses separate modules for Management and for Performance Counters but both uses JMX/jconsole as a default presentation layer / UI. |
| </p><p>During other SMILA components development it was found that both modules have issues. |
| </p><p>This page is a concept about merging both modules into one generic module and solving issues found. |
| </p> |
| <h2><span class="mw-headline" id="Discussion">Discussion</span></h2> |
| <h2><span class="mw-headline" id="Technical_proposal">Technical proposal</span></h2> |
| <h3><span class="mw-headline" id="Current_SMILA_Modules">Current SMILA Modules</span></h3> |
| <h4><span class="mw-headline" id="Performance_Counters_Module_Architecture">Performance Counters Module Architecture</span></h4> |
| <p>See <a href="Performance_counters_API.html" title="SMILA/Project Concepts/Performance counters API">Performance Counters API</a> |
| </p> |
| <h4><span class="mw-headline" id="Management_Module_Architecture">Management Module Architecture</span></h4> |
| <p>This chart shows the Management architecture: |
| </p><p><a href="http://wiki.eclipse.org/File:ManagementRegistry.png" class="image"><img alt="ManagementRegistry.png" src="http://wiki.eclipse.org/images/4/47/ManagementRegistry.png" width="720" height="624" /></a> |
| </p><p><br /> |
| </p> |
| <h3><span class="mw-headline" id="Issues">Issues</span></h3> |
| <h4><span class="mw-headline" id="Performance_Counters_Module_issues">Performance Counters Module issues</span></h4> |
| <ul> |
| <li> its impossible to group counters into tree legally by API ( now its used "JMX specific names" hack to group them ) |
| </li> |
| <li> its impossible to have several counters nested in common JMX leaf |
| </li> |
| <li> its impossible to predict when counter will be initialized (to start tracking) because it initialized only on usage |
| </li> |
| </ul> |
| <h4><span class="mw-headline" id="Management_Module_issues">Management Module issues</span></h4> |
| <ul> |
| <li> its impossible to group agents into tree |
| </li> |
| </ul> |
| <h4><span class="mw-headline" id="Common_issues">Common issues</span></h4> |
| <ul> |
| <li> its impossible to mix performance counters and management agents methods nested in one JMX leaf |
| </li> |
| </ul> |
| <h3><span class="mw-headline" id="Proposal">Proposal</span></h3> |
| <h4><span class="mw-headline" id="Agent_with_Counters">Agent with Counters</span></h4> |
| <p>Its suggested to use one registry class to work with management operations and with counters. Its planned to upgrade management module registry and remove performance counters registry. |
| </p><p>Description and initialization of performance counters will be in the Agent implementation. |
| It will allow to group counters (also together with management operations). |
| </p> |
| <div dir="ltr" class="mw-geshi mw-code mw-content-ltr"><div class="java source-java"><pre class="de1"><span class="kw1">class</span> MyAgent <span class="kw1">implements</span> Agent<span class="br0">{</span> |
|   |
| <span class="co1">// some management operation</span> |
| <span class="kw1">public</span> doSomething<span class="br0">(</span>args<span class="br0">[</span><span class="br0">]</span><span class="br0">)</span><span class="sy0">;</span> |
|   |
| <span class="co1">// some performance counter related to that module</span> |
| <span class="kw1">public</span> Counter getCounterOne<span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> |
|   |
| <span class="co1">// other performance counter related to that module</span> |
| <span class="kw1">public</span> Counter getCounterTwo<span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> |
|   |
| <span class="br0">}</span></pre></div></div> |
| <p>But its also possible (and suggested) to split agent into independent Management Agent and Counters Agent to avoid dependencies. Mainly Management Agent using service and not used inside the service. And is visa versa for Counters Agent |
| </p> |
| <div dir="ltr" class="mw-geshi mw-code mw-content-ltr"><div class="java source-java"><pre class="de1"><span class="kw1">class</span> MyManagementAgent <span class="kw1">implements</span> Agent<span class="br0">{</span> |
| ... |
| <span class="kw1">public</span> doSomething<span class="br0">(</span>args<span class="br0">[</span><span class="br0">]</span><span class="br0">)</span><span class="sy0">;</span> |
| .... |
|   |
| <span class="br0">}</span> |
| <span class="kw1">class</span> MyMonitoringAgent <span class="kw1">implements</span> Agent<span class="br0">{</span> |
| <span class="kw1">public</span> Counter getCounterOne<span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> |
| <span class="kw1">public</span> Counter getCounterTwo<span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> |
| <span class="br0">}</span></pre></div></div> |
| <h4><span class="mw-headline" id="Usage">Usage</span></h4> |
| <p>But how to refer and use externally registered counters? For example, Crawler Controller Agent register globally "Total" counter. Each crawler instance should able to use it. |
| </p><p>Its possible to pass CrawlerControllerAgent directly to crawler. Also if CrawlerControllerAgent was registered as service (its preferable way) its possible to find it by OSGi services registry. But also its possible to generate unique ID for crawler agent during registration and use it later. |
| </p> |
| <div dir="ltr" class="mw-geshi mw-code mw-content-ltr"><div class="java source-java"><pre class="de1"><span class="kw1">class</span> ServiceActivatorFirst<span class="br0">{</span> |
|   |
| init<span class="br0">(</span><span class="br0">)</span><span class="br0">{</span> |
| POC_AGENT_ID <span class="sy0">=</span> <span class="kw3">Registry</span>.<span class="me1">register</span><span class="br0">(</span>firstPocAgent<span class="br0">)</span> |
| <span class="br0">}</span> |
|   |
| dispose<span class="br0">(</span><span class="br0">)</span><span class="br0">{</span> |
| <span class="kw3">Registry</span>.<span class="me1">unregister</span><span class="br0">(</span>POC_AGENT_ID<span class="br0">)</span> |
| <span class="br0">}</span> |
| <span class="br0">}</span> |
|   |
| <span class="co1">// in other class</span> |
|   |
| <span class="kw1">class</span> TheSecondClass<span class="br0">{</span> |
|   |
| usingTheFirstPocAgent<span class="br0">(</span><span class="br0">)</span><span class="br0">{</span> |
| FirstPocAgent firstPocAgent <span class="sy0">=</span> <span class="kw3">Registry</span>.<span class="me1">get</span><span class="br0">(</span>ServiceActivatorFirst.<span class="me1">POC_AGENT_ID</span><span class="br0">)</span> |
| onePocAgent.<span class="me1">getCounterOne</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">increment</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> |
| <span class="br0">}</span> |
|   |
| <span class="br0">}</span></pre></div></div> |
| <p><br /> |
| </p> |
| <h4><span class="mw-headline" id="Category_Tree_Construction_.2F_Registration">Category Tree Construction / Registration</span></h4> |
| <p>Its suggested to construct categories tree during registration |
| </p> |
| <div dir="ltr" class="mw-geshi mw-code mw-content-ltr"><div class="java source-java"><pre class="de1"> <span class="co1">// manual categories ancestors iteration</span> |
| <span class="nu0">1</span>.<span class="kw3">Option</span><span class="sy0">:</span> Separation between Management and Monitoring |
| ManagementCategory category <span class="sy0">=</span> ManagementRegistry.<span class="me1">getCategory</span><span class="br0">(</span>ManagementRegistry.<span class="me1">MANAGEMENTCATEGORY</span><span class="br0">)</span>.<span class="me1">getCategory</span><span class="br0">(</span><span class="st0">"Crawler"</span><span class="br0">)</span><span class="sy0">;</span> |
| <span class="nu0">2</span>.<span class="kw3">Option</span><span class="sy0">:</span> Management and Monitoring integrated |
| ManagementCategory category <span class="sy0">=</span> ManagementRegistry.<span class="me1">getCategory</span><span class="br0">(</span><span class="st0">"Crawler"</span><span class="br0">)</span><span class="sy0">;</span> |
|   |
|   |
| <span class="co1">// first way to register</span> |
| category.<span class="me1">register</span><span class="br0">(</span>agent<span class="br0">)</span><span class="sy0">;</span> |
| <span class="co1">// the second way to register</span> |
| ManagementRegistry.<span class="me1">register</span><span class="br0">(</span>category, agent<span class="br0">)</span><span class="sy0">;</span> |
| <span class="co1">// third way to register only a special Performance Counter (without an encapsulating agent-class) ## dynamically</span> |
| ManagementRegistry.<span class="me1">register</span><span class="br0">(</span>category, performanceCounter<span class="br0">)</span><span class="sy0">;</span> |
| <span class="co1">// third way to register only a some Performance Counters (without an encapsulating agent-class) ## dynamically</span> |
| ManagementRegistry.<span class="me1">register</span><span class="br0">(</span>category, performanceCounterList<span class="br0">)</span><span class="sy0">;</span> |
|   |
| <span class="co1">// unregister</span> |
| <span class="kw3">Registry</span>.<span class="me1">unregister</span><span class="br0">(</span>agent<span class="br0">)</span><span class="sy0">;</span> |
| <span class="co1">// or</span> |
| category.<span class="me1">unregister</span><span class="br0">(</span>agent<span class="br0">)</span><span class="sy0">;</span></pre></div></div> |
| <p>Also its suggested to assume that creation/removing of categories is done automatically by Registry and Category classes. |
| </p><p><br /> |
| Trees: |
| </p> |
| <pre>1.Option: Separation between Management and Monitoring |
| </pre> |
| <div dir="ltr" class="mw-geshi mw-code mw-content-ltr"><div class="java source-java"><pre class="de1"> SMILA |
| <span class="sy0">-</span> Management |
| <span class="sy0">-</span> CrawlerController |
| <span class="sy0">-</span> LuceneService |
| <span class="sy0">-</span> DeltaIndexing |
| <span class="sy0">-</span> Monitoring |
| <span class="sy0">-</span> CrawlerController |
| <span class="sy0">-</span> LuceneService |
| <span class="sy0">-</span> DeltaIndexing |
| <span class="sy0">-</span> Crawlers |
| <span class="sy0">-</span> FileSystemCrawler<span class="sy0">-</span>HashID<span class="sy0">-</span>DataSourceID |
| <span class="sy0">-</span> FileSystemCrawler<span class="sy0">-</span>HashID2<span class="sy0">-</span>DataSourceID2 |
| <span class="sy0">-</span> WebSystemCrawler<span class="sy0">-</span>HashID2<span class="sy0">-</span>DataSourceID2 |
| <span class="sy0">-</span> Pipelines |
| <span class="sy0">-</span> AddPipeline</pre></div></div> |
| <pre>2.Option: Management and Monitoring integrated |
| </pre> |
| <div dir="ltr" class="mw-geshi mw-code mw-content-ltr"><div class="java source-java"><pre class="de1"> SMILA |
| <span class="sy0">-</span> CrawlerController |
| <span class="sy0">-</span> LuceneService |
| <span class="sy0">-</span> DeltaIndexing |
| <span class="sy0">-</span> Crawlers |
| <span class="sy0">-</span> FileSystemCrawler<span class="sy0">-</span>HashID<span class="sy0">-</span>DataSourceID |
| <span class="sy0">-</span> FileSystemCrawler<span class="sy0">-</span>HashID2<span class="sy0">-</span>DataSourceID2 |
| <span class="sy0">-</span> WebSystemCrawler<span class="sy0">-</span>HashID2<span class="sy0">-</span>DataSourceID2 |
| <span class="sy0">-</span> Pipelines |
| <span class="sy0">-</span> AddPipeline</pre></div></div> |
| <pre>The Performance Counters are shown under the JConsole Tab:Attributes and Management Functions are usable under the JConsole Tab:Operations. |
| </pre> |
| <p>Our suggestion is the second option. |
| </p> |
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