com.bigdata.rdf.sail.webapp

Class CountersServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.bigdata.rdf.sail.webapp.BigdataServlet

com.bigdata.rdf.sail.webapp.CountersServlet

All Implemented Interfaces:

IMimeTypes, Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class CountersServlet
extends BigdataServlet

Servlet for exposing performance counters.

Author:

Bryan Thompson TODO The SPARQL layer needs to be separated from the core bigdata layer, with the BigdataContext moving into a servlet package in the bigdata module and the CountersServlet moving into a servlet package in the com.bigdata.counters package namespace.

The flot resources need to be retrievable.

The event reporting needs to be hooked via IEventReceivingService, at least for scale-out.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.bigdata.rdf.sail.webapp.BigdataServlet

ATTRIBUTE_RDF_CONTEXT, charset, DELETE, GET, HTTP_BADREQUEST, HTTP_HEADER_BIGDATA_READ_ONLY, HTTP_INTERNALERROR, HTTP_METHOD_NOT_ALLOWED, HTTP_NOTFOUND, HTTP_NOTIMPLEMENTED, HTTP_OK, POST, PUT

Fields inherited from interface com.bigdata.rdf.sail.webapp.client.IMimeTypes

MIME_APPLICATION_JSON, MIME_APPLICATION_URL_ENCODED, MIME_APPLICATION_XML, MIME_DEFAULT_BINARY, MIME_GRAPH_ML, MIME_PROPERTIES_XML, MIME_TEXT_HTML, MIME_TEXT_JAVASCRIPT, MIME_TEXT_PLAIN

Constructor Summary

Constructors

Constructor and Description
CountersServlet()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp) Performance counters

Methods inherited from class com.bigdata.rdf.sail.webapp.BigdataServlet

buildAndCommitResponse, decodeContexts, getBigdataRDFContext, getBooleanValue, getIndexManager, getIndexManager, getServiceURIs, readFully, submitApiTask

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CountersServlet

public CountersServlet()

Method Detail

doGet

protected void doGet(javax.servlet.http.HttpServletRequest req,
         javax.servlet.http.HttpServletResponse resp)
              throws IOException

Performance counters

 GET /counters
 

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

IOException