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| <h1 class="firstHeading">SMILA/Documentation/Management</h1> |
| <div id="bodyContent"> |
| <h3 id="siteSub">From Eclipsepedia</h3> |
| <div id="contentSub"><span class="subpages">< <a href="../../SMILA.html" title="SMILA">SMILA</a> | <a href="../Documentation.html" title="SMILA/Documentation">Documentation</a></span></div> |
| <div id="jump-to-nav">Jump to: <a href="Management.html#column-one">navigation</a>, <a href="Management.html#searchInput">search</a></div> <!-- start content --> |
| <p>SMILA is a framework with a lot of functionality. Most is invoke automatically by internal operations. Nevertheless, the user has to configure and start an initial operation. All functions a user can execute are accessible from the JMX Management Agent. On the following pages you will learn how to use SMILA with the aid of Java's built in JConsole and to handle the JMXClient which features access to SMILA commands via batch files. |
| </p> |
| <table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div> |
| <ul> |
| <li class="toclevel-1"><a href="Management.html#Management_with_the_aid_of_jconsole"><span class="tocnumber">1</span> <span class="toctext">Management with the aid of jconsole</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="Management.html#Smila_manageable_Components"><span class="tocnumber">1.1</span> <span class="toctext">Smila manageable Components</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="Management.html#CrawlerController"><span class="tocnumber">1.1.1</span> <span class="toctext">CrawlerController</span></a></li> |
| <li class="toclevel-3"><a href="Management.html#RecordRecycler"><span class="tocnumber">1.1.2</span> <span class="toctext">RecordRecycler</span></a></li> |
| <li class="toclevel-3"><a href="Management.html#DeltaIndexingManager"><span class="tocnumber">1.1.3</span> <span class="toctext">DeltaIndexingManager</span></a></li> |
| <li class="toclevel-3"><a href="Management.html#Lucene"><span class="tocnumber">1.1.4</span> <span class="toctext">Lucene</span></a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="Management.html#PerformanceCounter"><span class="tocnumber">2</span> <span class="toctext">PerformanceCounter</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="Management.html#Crawlers_performance_counters"><span class="tocnumber">2.1</span> <span class="toctext">Crawlers performance counters</span></a></li> |
| <li class="toclevel-2"><a href="Management.html#Processing_performance_counters"><span class="tocnumber">2.2</span> <span class="toctext">Processing performance counters</span></a></li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="Management.html#JMX_Client"><span class="tocnumber">3</span> <span class="toctext">JMX Client</span></a> |
| <ul> |
| <li class="toclevel-2"><a href="Management.html#Pre-defined_commands_.28batch-files.29"><span class="tocnumber">3.1</span> <span class="toctext">Pre-defined commands (batch-files)</span></a></li> |
| <li class="toclevel-2"><a href="Management.html#Usage"><span class="tocnumber">3.2</span> <span class="toctext">Usage</span></a></li> |
| <li class="toclevel-2"><a href="Management.html#Configuration"><span class="tocnumber">3.3</span> <span class="toctext">Configuration</span></a> |
| <ul> |
| <li class="toclevel-3"><a href="Management.html#Configuration_explanation"><span class="tocnumber">3.3.1</span> <span class="toctext">Configuration explanation</span></a> |
| <ul> |
| <li class="toclevel-4"><a href="Management.html#To_use_commands_which_interact_with_JMX_a_connection_is_needed"><span class="tocnumber">3.3.1.1</span> <span class="toctext">To use commands which interact with JMX a connection is needed</span></a></li> |
| <li class="toclevel-4"><a href="Management.html#To_create_your_own_command_you_have_to_use_cmd_command_after_this_schema"><span class="tocnumber">3.3.1.2</span> <span class="toctext">To create your own command you have to use cmd command after this schema</span></a></li> |
| <li class="toclevel-4"><a href="Management.html#To_keep_the_console_open_and_inform_you_about_actual_status_you_can_use_the_wait_tag"><span class="tocnumber">3.3.1.3</span> <span class="toctext">To keep the console open and inform you about actual status you can use the wait tag</span></a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="toclevel-1"><a href="Management.html#JMX_Client_in_OSGi_console"><span class="tocnumber">4</span> <span class="toctext">JMX Client in OSGi console</span></a></li> |
| <li class="toclevel-1"><a href="Management.html#External_links"><span class="tocnumber">5</span> <span class="toctext">External links</span></a></li> |
| </ul> |
| </td></tr></table><script type="text/javascript"> if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } </script> |
| <a name="Management_with_the_aid_of_jconsole"></a><h2> <span class="mw-headline"> Management with the aid of jconsole </span></h2> |
| <p>The jconsole is a little tool for monitoring java applications nested in the JDK. Over a JMX connection it’s possible to connect an application with the swing UI of jconsole. If you start up SMILA engine and open jconsole you can connect the Jconsole to SMILA immediately. |
| </p> |
| <div class="thumb tright"><div class="thumbinner" style="width:182px;"><a href="http://wiki.eclipse.org/Image:Jconsole.png" class="image" title="jconsole"><img alt="jconsole" src="http://wiki.eclipse.org/images/thumb/6/68/Jconsole.png/180px-Jconsole.png" width="180" height="137" border="0" class="thumbimage" /></a> <div class="thumbcaption"><div class="magnify"><a href="http://wiki.eclipse.org/Image:Jconsole.png" class="internal" title="Enlarge"><img src="http://wiki.eclipse.org/skins/common/images/magnify-clip.png" width="15" height="11" alt="" /></a></div>jconsole</div></div></div> |
| <p>After connecting you can find SMILA operation on MBeans tab in the Tree on the left site. |
| </p> |
| <a name="Smila_manageable_Components"></a><h3> <span class="mw-headline"> Smila manageable Components </span></h3> |
| <p>There are four components of SMILA which you can access over jconsole. |
| </p> |
| <a name="CrawlerController"></a><h4> <span class="mw-headline"> CrawlerController </span></h4> |
| <p>Here you can manage the crawling jobs. The following commands are available: |
| </p> |
| <ul><li> <tt>startCrawl(String dataSourceID)</tt>: starts a crawling job with the given dataSourceID, for example file or web. |
| </li><li> <tt>stopCrawl(String dataSourceID)</tt>: stops the crawling job for the given dataSourceID. <i>Note:</i> the crawler is only signaled to stop and may do so at its own discretion. In other words: depending on the implementation it might take a while until it actually stops crawling. It thus gives the crawler the chance to clean up all open resources and finish whatever business it needs to. |
| </li><li> <tt>getActiveCrawls()</tt>: opens a dialog which show a list containing the dataSourceID for all active crawl jobs. If no job is running the dialog shows null. |
| </li><li> <tt>getActiveCrawlsStatus()</tt>: opens a dialog telling you how many crawl jobs are active at the moment. |
| </li><li> <tt>getStatus(String dataSourceID)</tt>: opens a dialog which shows you the status of the crawling job for a given <tt>dataSourceID</tt>. Possible states are: <tt>RUNNING</tt>, <tt>FINISHED</tt>, <tt>STOPPED</tt> or <tt>ABORTED</tt>. |
| </li></ul> |
| <a name="RecordRecycler"></a><h4> <span class="mw-headline"> RecordRecycler </span></h4> |
| <p>The <tt>RecordRecycler</tt> gives you the possibly to push already crawled records into Data Flow Process again. For example it could be useful if you want to modify record in the index with another pipeline. To control <tt>RecordRecycler</tt> there are following operations available. |
| </p> |
| <ul><li> <tt>startRecycling(String configurationID, String dataSourceId)</tt>: fires a recycling event with the given configurationID ( the configurationID must match the name of a configuration file located at <tt>configuration/org.eclipse.smila.connectivity.framework.queue.worker/recyclers</tt>) and <tt>dataSourceID</tt> (get records from RecordStorage which have this dataSourceID). See <a href="QueueWorker.html" title="SMILA/Documentation/QueueWorker">QueueWorker</a> documentation for further enlightenment on the Recycler. |
| </li><li> <tt>stopRecycling(String dataSourceID)</tt>: stops the recycle event for the given dataSourceID. |
| </li><li> <tt>getRecordsRecycled(String dataSourceID)</tt>: opens a dialog shows how many records are recycled. |
| </li><li> <tt>getConfigurations(String dataSourceID)</tt>: show a list containing all available recycle configuration files. |
| </li><li> <tt>getStatus(String dataSourceID)</tt>: open dialog showing the status of recycling event for given <tt>dataSourceID</tt>. Possible states are: <tt>STARTED</tt>, <tt>IN_PROCESS</tt>, <tt>STOPPING</tt>, <tt>STOPPED</tt>, <tt>FINISHED</tt>. |
| </li></ul> |
| <a name="DeltaIndexingManager"></a><h4> <span class="mw-headline"> DeltaIndexingManager </span></h4> |
| <p>The <tt>DeltaIndexManager</tt> stores a hash value of each record. It is part of the Connectivity Framework and signals a crawler that a given record has (not) changed since the last crawl. See <a href="DeltaIndexingManager.html" title="SMILA/Documentation/DeltaIndexingManager">DeltaIndexing</a> documentation. Within jconsole you can use the following commands: |
| </p> |
| <ul><li> <tt>clear(String dataSourceID)</tt>: Clear all entries of the DeltaIndexingManager for the given dataSourceID. You cannot execute this command on an already locked data source. If you want to clear a locked data source you have to unlock it first. |
| </li><li> <tt>clearAll()</tt>: Clears all entries of the DeltaIndexingManager including entries of any active sessions! Note that this may cause errors in clients currently using any of the closed sessions. |
| </li><li> <tt>unlock(String dataSourceID)</tt>: Unlock the given data source and removes the sessions. Note that this may cause exceptions in a client currently using the closed sessions. |
| </li><li> <tt>unlockAll()</tt>: Unlock all data sources and removes all sessions. Note that this may cause exceptions in clients currently using any of the closed sessions. |
| </li><li> <tt>getLockStates()</tt>: Get an overview what data sources are locked or unlocked. |
| </li><li> <tt>getEntryCount(String dataSourceID)</tt>: Get the number of delta indexing entries for the given dataSourceID. |
| </li><li> <tt>getEntryCounts()</tt>: Get the number of delta indexing entries for all data sources. |
| </li></ul> |
| <p><br /> |
| </p> |
| <a name="Lucene"></a><h4> <span class="mw-headline"> Lucene </span></h4> |
| <p>With Lucene you have the possibility to invoke several method concerning the index. Following operation are available: |
| </p> |
| <ul><li> <tt>deleteIndex(String indexName)</tt>: removes the index with the given name if available. Otherwise an error dialog is shown. |
| </li><li> <tt>indexExists(String indexName)</tt>: ask the framework if the given Index exists. Returns true or false. |
| </li><li> <tt>createIndex (String indexName)</tt>: creates an index with the given name. |
| </li><li> <tt>reorganizeIndex(String indexName)</tt>: reorganizes the index with the given name. This will clean up the index, in that deleted entries are physically removed resulting in a smaller index size. |
| </li><li> <tt>renameIndex(String currentIndexName, String newIndexName)</tt>: rename the index with the given name (currentIndexname) into the value of newIndexName. |
| </li><li> <tt>flushIndex(String indexName)</tt>: flushes the index with the given name if available. |
| </li><li> <tt>removeWriteLock(String indexName)</tt>: removes the write.lock file of the index with the given name if available. This may be helpful if SMILA process was killed. |
| </li></ul> |
| <a name="PerformanceCounter"></a><h2> <span class="mw-headline"> PerformanceCounter </span></h2> |
| <p>A <a href="../Project_Concepts/Performance_counters_API.html" title="SMILA/Project Concepts/Performance counters API">PerformanceCounter</a> monitors the activity of a component. In SMILA currently two kinds of PerformanceCounters are available, one for <a href="Crawler.html" title="SMILA/Documentation/Crawler">Crawlers</a> and another for Processing within the Data Flow Process. With the aid of jconsole you have the possibility to look at interesting counters of SMILA. There exist a lot of views that allow you to get information about different situations. |
| </p> |
| <a name="Crawlers_performance_counters"></a><h3> <span class="mw-headline"> Crawlers performance counters </span></h3> |
| <p>After you start a crawl job immediately a new branch in MBeans-tree appears with the following nodes/values: |
| </p> |
| <div class="thumb tright"><div class="thumbinner" style="width:182px;"><a href="http://wiki.eclipse.org/Image:CrawlerPCTree.PNG" class="image" title="Crawler counters tree"><img alt="Crawler counters tree" src="http://wiki.eclipse.org/images/thumb/5/57/CrawlerPCTree.PNG/180px-CrawlerPCTree.PNG" width="180" height="183" border="0" class="thumbimage" /></a> <div class="thumbcaption"><div class="magnify"><a href="http://wiki.eclipse.org/Image:CrawlerPCTree.PNG" class="internal" title="Enlarge"><img src="http://wiki.eclipse.org/skins/common/images/magnify-clip.png" width="15" height="11" alt="" /></a></div>Crawler counters tree</div></div></div> |
| <ul><li> <tt>Crawlers</tt> |
| <ul><li> <tt>FileSystem</tt> - Crawler type |
| <ul><li> <tt>Launches</tt> |
| <ul><li> <tt>file</tt> - Data source Id |
| <ul><li> <tt>19786841</tt> - Crawler instance, one node for every crawl job |
| </li></ul> |
| </li></ul> |
| </li><li> <tt>Total</tt> - Crawler type sub-total |
| </li></ul> |
| </li><li> <tt>Web</tt> - Crawler type |
| <ul><li> <tt>Launches</tt> |
| <ul><li> <tt>web</tt> - Data source Id |
| <ul><li> <tt>2611152</tt> - Crawler instance, one node for every crawl job |
| </li></ul> |
| </li></ul> |
| </li><li> <tt>Total</tt> - Crawler type sub-total |
| </li></ul> |
| </li><li> <tt>Total</tt> |
| </li></ul> |
| </li></ul> |
| <p>The nodes contain a subset collection of these possible counters: |
| </p> |
| <ul><li> <tt>AttachmentBytesTransfered</tt>: total records attachment bytes transfered |
| </li><li> <tt>AttachmentTransferRate</tt>: records attachment bytes transfer rate (bytes/sec) |
| </li><li> <tt>AverageAttachmentTransferRate</tt>: overall (whole crawl job) records attachment bytes transfer rate (bytes/sec) |
| </li><li> <tt>AverageDeltaIndicesProcessingTime</tt>: average delta index processing time (sec) |
| </li><li> <tt>AverageRecordsProcessingTime</tt>: average record processing time (sec) |
| </li><li> <tt>OverallAverageDeltaIndicesProcessingTime</tt>: overall delta index processing time (sec) |
| </li><li> <tt>OverallAverageRecordsProcessingTime</tt>: overall record processing time (sec) |
| </li><li> <tt>Error</tt>: contains a collection of all errors occurred. On operation tab you can find a method to show all errors in a dialog box. |
| </li><li> <tt>Delta-indices</tt>: number of delta indices created in LuceneIndex. |
| </li><li> <tt>Exceptions(critical)</tt>: number of critical exceptions. |
| </li><li> <tt>Exceptions(non-critical)</tt>: number of non-critical exceptions. |
| </li><li> <tt>Exceptions(producer)</tt>: number of producer exceptions. |
| </li><li> <tt>Files</tt>: number of files which were crawled. (only FileSystemCrawler) |
| </li><li> <tt>Folder</tt>: number of folder walked through. (only FileSystemCrawler) |
| </li><li> <tt>Records</tt>: number of records created. |
| </li><li> <tt>Bytes</tt>: how much bytes were downloaded |
| </li><li> <tt>http-fetch-time</tt>: average of each http-fetch-time, i.e. the time it costs to download a webpage. |
| </li><li> <tt>Pages</tt>: how many pages were visited. |
| </li></ul> |
| <a name="Processing_performance_counters"></a><h3> <span class="mw-headline"> Processing performance counters </span></h3> |
| <p>As soon as Router puts <tt>Record</tt>s into MQ the Listener pushes them into Data Flow Process. This time a new section with the following hierarchy (only an example, because PerformanceCounters vary according to your personal usage of SMILA) appears in MBeans-tree: |
| </p> |
| <ul><li> <tt>Pipeline</tt>: lists all invoked pipelines. |
| <ul><li> <tt>AddPipeline</tt> |
| </li><li> <tt>DeletePipeline</tt> |
| </li></ul> |
| </li><li> <tt>Processing Service</tt>: lists all processing services which were invoked, sorted by pipelines |
| <ul><li> <tt>AddPipeline</tt> |
| <ul><li> <tt>LuceneIndexService</tt> |
| </li><li> <tt>SimepleMimeTypeIdentifier</tt> |
| </li></ul> |
| </li><li> <tt>DeletePipeline</tt> |
| <ul><li> <tt>LuceneIndexService</tt> |
| </li></ul> |
| </li></ul> |
| </li><li> <tt>Simple Pipelet</tt>: lists all pipelets which were used, sorted by pipelines |
| <ul><li> <tt>AddPipeline</tt> |
| <ul><li> <tt>HtmlToTextPipelet</tt> |
| </li></ul> |
| </li></ul> |
| </li></ul> |
| <a name="JMX_Client"></a><h2> <span class="mw-headline"> JMX Client </span></h2> |
| <p>The JMX Client is a lightweight and very easy to use command line driven component to use access most JMX Management operations. It works without jconsole and provides only a few commands. If you want to have full control over SMILA framework you have to use jconsole as described in the chapter above. But if you only want to start a crawl job or check if a crawl job is still active, you don’t have to use the jconsole. Furthermore you have the possibility to expand functionality of JMX Client. It is highly configurable with only one single configuration file. |
| </p> |
| <a name="Pre-defined_commands_.28batch-files.29"></a><h3> <span class="mw-headline"> Pre-defined commands (batch-files) </span></h3> |
| <ul><li> <tt>crawlFILE</tt>: start a crawl job with the data source "file" |
| </li><li> <tt>crawlFILEandWait</tt>: same as command above with the exception that the console-window stays open till the crawl job has finished. |
| </li><li> <tt>crawlFILEstop</tt>: stop the crawl job for data source "file", if one is active. |
| </li><li> <tt>crawlWEB</tt>: start a crawl job for data source "web". |
| </li><li> <tt>crawlWEBandWait</tt>: same as command above with the exception that the console-windows stays open till the crawl job has finished. |
| </li><li> <tt>crawlWEBstop</tt>: stop the crawl job for data source "web", if one is active. |
| </li><li> <tt>getActiveCrawls</tt>: show all active crawl jobs on console. |
| </li><li> <tt>agentFEEDS</tt> start agent for the data source "feeds" |
| </li><li> <tt>agentFEEDSStop</tt> stop agent for the data source "feeds", if one is active |
| </li><li> <tt>getActiveAgents</tt>: show all active agent jobs on console. |
| </li><li> <tt>indexOptimize</tt>: invoke a reorganize of LuceneIndex (default test_index). |
| </li><li> <tt>recycleConfigurations</tt>: display all available recycler configurations. |
| </li><li> <tt>recycleFILE</tt>: start a recycle event for dataSourceID file and the default recyclerConfig (recycler1.xml) |
| </li><li> <tt>recycleFILEandWait</tt>: same as command above with the exception that the console-window stays open till the recycle event has finished. |
| </li><li> <tt>recycleFILEstatus</tt>: show the actual status of recycle event for dataSourceID file. |
| </li><li> <tt>clearOntology</tt>: remove all statements from "native" ontology. |
| </li><li> <tt>importRDF</tt>: import RDF file into "native" ontology. First argument is path to the RDF file (different formats are supported if the suffix is correct, see <a href="SesameOntologyManager.html#JMX_Management_Agent" title="SMILA/Documentation/SesameOntologyManager">SMILA/Documentation/SesameOntologyManager#JMX Management Agent</a>, second argument is the baseURI for all "relative" resources defined in the file. The value is irrelevant if the file contains only "absolute" URIs. |
| </li><li> <tt>exportRDF</tt>: export all statements from "natvie" ontology to file "export.rdf" in RDF/XML format. |
| </li></ul> |
| <a name="Usage"></a><h3> <span class="mw-headline"> Usage </span></h3> |
| <p>If you open command window in folder <tt>SMILA/jmxclient</tt> and execute <tt>run.bat</tt> you'll get very useful help. |
| </p> |
| <div class="thumb tright"><div class="thumbinner" style="width:182px;"><a href="http://wiki.eclipse.org/Image:JMXClient.png" class="image" title="JMX Client"><img alt="JMX Client" src="http://wiki.eclipse.org/images/thumb/a/a4/JMXClient.png/180px-JMXClient.png" width="180" height="77" border="0" class="thumbimage" /></a> <div class="thumbcaption"><div class="magnify"><a href="http://wiki.eclipse.org/Image:JMXClient.png" class="internal" title="Enlarge"><img src="http://wiki.eclipse.org/skins/common/images/magnify-clip.png" width="15" height="11" alt="" /></a></div>JMX Client</div></div></div> |
| <p>The JMX Client can be used to simplify JMX Management while using batch-files for most important functions. But that’s not all. With the aid of JMX Client you have the possibility to use SMILA completely from your console or write own batch files which could invoke for example one method after another. The Client works with commands. These commands are managed in only one configuration file. In addition to the pre-defined commands you are able to create own commands. You only need to know the fully qualified class name and method name of function you want to invoke. To execute a command simply use this pattern: run.bat commandName commandParameters. The JMX client is able to execute any JMX operation and get any JMX attribute and to make it in one batch with reusing previous results. |
| </p> |
| <a name="Configuration"></a><h3> <span class="mw-headline"> Configuration </span></h3> |
| <p>There is a configuration file located at <tt>org.eclipse.smila.management.jmx.client/schemas/jmxclient.xsd</tt> (Source) and <tt>jmxclient/schemas/jmxclient.xsd</tt> (Build). The default configuration file could be found at <tt>org.eclipse.smila.management.jmx.client/config.xml</tt> (Source) and <tt>jmxclient/config.xml</tt>. |
| </p><p><br /> |
| </p> |
| <a name="Configuration_explanation"></a><h4> <span class="mw-headline"> Configuration explanation </span></h4> |
| <div class="messagebox" style="background-color: #def3fe; border: 1px solid #c5d7e0; color: black; padding: 5px; margin: 1ex 0; min-height: 35px; padding-left: 45px;"> |
| <div style="float: left; margin-left: -40px;"><a href="http://wiki.eclipse.org/Image:Note.png" class="image" title="Note.png"><img alt="" src="http://wiki.eclipse.org/images/c/cc/Note.png" width="35" height="35" border="0" /></a></div> |
| <div><b> work needed </b><br />the example is outdated and the English is bad</div> |
| </div> |
| <a name="To_use_commands_which_interact_with_JMX_a_connection_is_needed"></a><h5> <span class="mw-headline"> To use commands which interact with JMX a connection is needed </span></h5> |
| <div dir="ltr" style="text-align: left;"><pre class="source-xml"><span class="sc3"><span class="re1"><connection</span> <span class="re0">id</span>=<span class="st0">"local"</span> <span class="re0">host</span>=<span class="st0">"localhost"</span> <span class="re0">port</span>=<span class="st0">"9004"</span><span class="re2">/></span></span></pre></div> |
| <a name="To_create_your_own_command_you_have_to_use_cmd_command_after_this_schema"></a><h5> <span class="mw-headline"> To create your own command you have to use cmd command after this schema </span></h5> |
| <ul><li> cmd: |
| <ul><li> id: name of the command. |
| </li><li> echo: something to display on console if command is execute. |
| <ul><li> operation |
| <ul><li> domain: JMX property root is DOMAIN inside each domain paths (to leafs) are identified by KEY for leafs there are operstions and attributes. |
| </li><li> key: Class containing method. |
| </li><li> name: name of the method to invoke. |
| </li><li> echo: something to display on console if method is invoked. |
| <ul><li> parameter: one tag for each parameter. |
| <ul><li> echo: description for the parameter. |
| </li></ul> |
| </li></ul> |
| </li></ul> |
| </li></ul> |
| </li></ul> |
| </li></ul> |
| <a name="To_keep_the_console_open_and_inform_you_about_actual_status_you_can_use_the_wait_tag"></a><h5> <span class="mw-headline"> To keep the console open and inform you about actual status you can use the wait tag </span></h5> |
| <ul><li> <b>STEP 1</b>: |
| </li></ul> |
| <div dir="ltr" style="text-align: left;"><pre class="source-xml"><span class="sc3"><span class="re1"><cmd</span> <span class="re0">id</span>=<span class="st0">"crawlW"</span> <span class="re0">echo</span>=<span class="st0">"Starting crawler by datasource id and wait for finished"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><operation</span> |
| <span class="re0">key</span>=<span class="st0">"CrawlerController"</span> |
| <span class="re0">name</span>=<span class="st0">"startCrawling"</span> |
| <span class="re0">echo</span>=<span class="st0">"Starting crawl [%1]"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><parameter</span> <span class="re0">echo</span>=<span class="st0">"data source id"</span><span class="re2">/></span></span> |
| <span class="sc3"><span class="re1"></operation<span class="re2">></span></span></span> |
| ...</pre></div> |
| <dl><dd> for DOMAIN "SMILA" and leaf identified by KEY „CrawlerController" execute operation "startCrawling" with one input parameter ( its String type - default) JMX will return result to client, e.g. <i>"Crawl with the dataSourceId = file and hashcode [595826] successfully started!"</i> |
| </dd></dl> |
| <ul><li> <b>STEP 2</b>: |
| </li></ul> |
| <dl><dd><dl><dd> we should extract hash code from crawler to track its activities it was used by task the next result is "595826" |
| </dd></dl> |
| </dd></dl> |
| <div dir="ltr" style="text-align: left;"><pre class="source-xml"><span class="sc3"><span class="re1"><regexp</span> <span class="re0">pattern</span>=<span class="st0">"^.*\[(\d+)\].*$"</span> <span class="re0">group</span>=<span class="st0">"1"</span> <span class="re0">echo</span>=<span class="st0">"Extracting crawler hash code"</span><span class="re2">/></span></span></pre></div> |
| <ul><li> <b>STEP 3</b> is a wait task - the most complex - we will wait until crawl finished here it defined by 2 subnodes |
| </li></ul> |
| <div dir="ltr" style="text-align: left;"><pre class="source-xml"><span class="sc3"><span class="re1"><wait</span> <span class="re0">echo</span>=<span class="st0">"Waiting while crawl ends"</span> <span class="re0">pause</span>=<span class="st0">"1000"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><in<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><cmd</span> <span class="re0">id</span>=<span class="st0">"-"</span> <span class="re0">echo</span>=<span class="st0">"Getting crawler status by datasource id"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><operation</span> |
| <span class="re0">key</span>=<span class="st0">"CrawlerController"</span> |
| <span class="re0">name</span>=<span class="st0">"getStatus"</span> |
| <span class="re0">echo</span>=<span class="st0">"Crawl [%1] status"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="coMULTI"><!-- value="%1" --></span></span> |
| <span class="sc3"><span class="re1"><parameter</span> <span class="re0">echo</span>=<span class="st0">"data source id"</span><span class="re2">/></span></span> |
| <span class="sc3"><span class="re1"></operation<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></cmd<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><const</span> <span class="re0">value</span>=<span class="st0">"Finished"</span> <span class="re0">echo</span>=<span class="st0">"Crawling finished status"</span><span class="re2">/></span></span> |
| <span class="sc3"><span class="re1"><const</span> <span class="re0">value</span>=<span class="st0">"Stopped"</span> <span class="re0">echo</span>=<span class="st0">"Crawling stopped status"</span><span class="re2">/></span></span> |
| <span class="sc3"><span class="re1"></in<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><cmd</span> <span class="re0">id</span>=<span class="st0">"-"</span> <span class="re0">echo</span>=<span class="st0">"Reading crawler performance counters"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><attribute</span> |
| <span class="re0">key</span>=<span class="st0">"Crawlers/%2/Total"</span> |
| <span class="re0">name</span>=<span class="st0">"Records"</span> |
| <span class="re0">echo</span>=<span class="st0">"Total records"</span><span class="re2">/></span></span> |
| ... |
| <span class="sc3"><span class="re1"></cmd<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></wait<span class="re2">></span></span></span></pre></div> |
| <dl><dd><dl><dd> First subnode ( here its logical IN ) is a condition to exit from WAIT task. Second subnode is a batch to execute if we not exited. So each 1000 ms it will ask for status and validate is it IN "Finished" or "Stopped": |
| <ul><li> if it is, the crawling finished, otherwise: |
| </li><li> three performance counters defined in <tt>cmd</tt> with <tt>id="-"</tt> will be printed. |
| </li></ul> |
| </dd></dl> |
| </dd></dl> |
| <a name="JMX_Client_in_OSGi_console"></a><h2> <span class="mw-headline"> JMX Client in OSGi console </span></h2> |
| <p>Since rev 464 (after M2), the JMX client is also added to the Equinox OSGi console as a command provider. Thus you can now invoke the same configured actions also from the OSGi console without having to open a seperate window. The command name is <tt>smila</tt> followed by the same arguments used with the <tt>run</tt> script in <tt>SMILA/jmxclient</tt>. Use <tt>help</tt> to get a description of the supported commands, the output should look like this: |
| </p><p><a href="http://wiki.eclipse.org/Image:SMILA-osgiconsole-help.png" class="image" title="Image:SMILA-osgiconsole-help.png"><img alt="Image:SMILA-osgiconsole-help.png" src="http://wiki.eclipse.org/images/7/7a/SMILA-osgiconsole-help.png" width="989" height="506" border="0" /></a> |
| </p><p>Usually a lot more help output for the standard Equinox commands follows so you may need to scroll back a lot to find the description of the <tt>smila</tt> command. |
| </p><p>See the next screenshot for an example session in which an agent and an crawler is controlled using the OSGi JMX client only. You'll see that the commands are exactly like when using the <tt>run</tt> script, only the command name is <tt>smila</tt>, not <tt>run</tt>. |
| </p><p><a href="http://wiki.eclipse.org/Image:SMILA-osgiconsole-commands.png" class="image" title="Image:SMILA-osgiconsole-commands.png"><img alt="Image:SMILA-osgiconsole-commands.png" src="http://wiki.eclipse.org/images/4/40/SMILA-osgiconsole-commands.png" width="989" height="386" border="0" /></a> |
| </p> |
| <a name="External_links"></a><h2> <span class="mw-headline"> External links </span></h2> |
| <ul><li> <a href="http://java.sun.com/javase/technologies/core/mntr-mgmt/javamanagement/" class="external text" title="http://java.sun.com/javase/technologies/core/mntr-mgmt/javamanagement/" rel="nofollow">Java Management Extensions (JMX)</a> |
| </li><li> <a href="http://java.sun.com/developer/technicalArticles/J2SE/jconsole.html" class="external text" title="http://java.sun.com/developer/technicalArticles/J2SE/jconsole.html" rel="nofollow">Using JConsole to Monitor Applications</a> |
| </li></ul> |
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| <p id="footercredit">This page was last modified 10:52, 18 February 2010 by <a href="http://wiki.eclipse.org/User:Daniel.stucky.empolis.com" title="User:Daniel.stucky.empolis.com">Daniel Stucky</a>. Based on work by <a href="http://wiki.eclipse.org/User:Tmenzel.brox.de" title="User:Tmenzel.brox.de">thomas menzel</a>, <a href="http://wiki.eclipse.org/User:Juergen.schumacher.empolis.com" title="User:Juergen.schumacher.empolis.com">Juergen Schumacher</a> and <a href="http://wiki.eclipse.org/User:Eliseyev.softaria.com" title="User:Eliseyev.softaria.com">Alexander Eliseyev</a>.</p> |
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