List of usage examples for javax.management MBeanInfo getAttributes
public MBeanAttributeInfo[] getAttributes()
From source file:org.apache.hadoop.hbase.util.JSONBean.java
/** * @param mBeanServer/*from w w w . ja v a 2 s .co m*/ * @param qry * @param attribute * @param description * @return Return non-zero if failed to find bean. 0 * @throws IOException */ private static int write(final JsonGenerator jg, final MBeanServer mBeanServer, ObjectName qry, String attribute, final boolean description) throws IOException { LOG.trace("Listing beans for " + qry); Set<ObjectName> names = null; names = mBeanServer.queryNames(qry, null); jg.writeArrayFieldStart("beans"); Iterator<ObjectName> it = names.iterator(); while (it.hasNext()) { ObjectName oname = it.next(); MBeanInfo minfo; String code = ""; String descriptionStr = null; Object attributeinfo = null; try { minfo = mBeanServer.getMBeanInfo(oname); code = minfo.getClassName(); if (description) descriptionStr = minfo.getDescription(); String prs = ""; try { if ("org.apache.commons.modeler.BaseModelMBean".equals(code)) { prs = "modelerType"; code = (String) mBeanServer.getAttribute(oname, prs); } if (attribute != null) { prs = attribute; attributeinfo = mBeanServer.getAttribute(oname, prs); } } catch (RuntimeMBeanException e) { // UnsupportedOperationExceptions happen in the normal course of business, // so no need to log them as errors all the time. if (e.getCause() instanceof UnsupportedOperationException) { if (LOG.isTraceEnabled()) { LOG.trace("Getting attribute " + prs + " of " + oname + " threw " + e); } } else { LOG.error("Getting attribute " + prs + " of " + oname + " threw an exception", e); } return 0; } catch (AttributeNotFoundException e) { // If the modelerType attribute was not found, the class name is used // instead. LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } catch (MBeanException e) { // The code inside the attribute getter threw an exception so log it, // and fall back on the class name LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } catch (RuntimeException e) { // For some reason even with an MBeanException available to them // Runtime exceptionscan still find their way through, so treat them // the same as MBeanException LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } catch (ReflectionException e) { // This happens when the code inside the JMX bean (setter?? from the // java docs) threw an exception, so log it and fall back on the // class name LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } } catch (InstanceNotFoundException e) { //Ignored for some reason the bean was not found so don't output it continue; } catch (IntrospectionException e) { // This is an internal error, something odd happened with reflection so // log it and don't output the bean. LOG.error("Problem while trying to process JMX query: " + qry + " with MBean " + oname, e); continue; } catch (ReflectionException e) { // This happens when the code inside the JMX bean threw an exception, so // log it and don't output the bean. LOG.error("Problem while trying to process JMX query: " + qry + " with MBean " + oname, e); continue; } jg.writeStartObject(); jg.writeStringField("name", oname.toString()); if (description && descriptionStr != null && descriptionStr.length() > 0) { jg.writeStringField("description", descriptionStr); } jg.writeStringField("modelerType", code); if (attribute != null && attributeinfo == null) { jg.writeStringField("result", "ERROR"); jg.writeStringField("message", "No attribute with name " + attribute + " was found."); jg.writeEndObject(); jg.writeEndArray(); jg.close(); return -1; } if (attribute != null) { writeAttribute(jg, attribute, descriptionStr, attributeinfo); } else { MBeanAttributeInfo[] attrs = minfo.getAttributes(); for (int i = 0; i < attrs.length; i++) { writeAttribute(jg, mBeanServer, oname, description, attrs[i]); } } jg.writeEndObject(); } jg.writeEndArray(); return 0; }
From source file:org.apache.hive.http.JMXJsonServlet.java
private void listBeans(JsonGenerator jg, ObjectName qry, String attribute, HttpServletResponse response) throws IOException { LOG.debug("Listing beans for " + qry); Set<ObjectName> names = null; names = mBeanServer.queryNames(qry, null); jg.writeArrayFieldStart("beans"); Iterator<ObjectName> it = names.iterator(); while (it.hasNext()) { ObjectName oname = it.next(); MBeanInfo minfo; String code = ""; Object attributeinfo = null; try {// ww w . ja v a 2s . c o m minfo = mBeanServer.getMBeanInfo(oname); code = minfo.getClassName(); String prs = ""; try { if ("org.apache.commons.modeler.BaseModelMBean".equals(code)) { prs = "modelerType"; code = (String) mBeanServer.getAttribute(oname, prs); } if (attribute != null) { prs = attribute; attributeinfo = mBeanServer.getAttribute(oname, prs); } } catch (AttributeNotFoundException e) { // If the modelerType attribute was not found, the class name is used // instead. LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } catch (MBeanException e) { // The code inside the attribute getter threw an exception so log it, // and fall back on the class name LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } catch (RuntimeException e) { // For some reason even with an MBeanException available to them // Runtime exceptions can still find their way through, so treat them // the same as MBeanException LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } catch (ReflectionException e) { // This happens when the code inside the JMX bean (setter?? from the // java docs) threw an exception, so log it and fall back on the // class name LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e); } } catch (InstanceNotFoundException e) { //Ignored for some reason the bean was not found so don't output it continue; } catch (IntrospectionException e) { // This is an internal error, something odd happened with reflection so // log it and don't output the bean. LOG.error("Problem while trying to process JMX query: " + qry + " with MBean " + oname, e); continue; } catch (ReflectionException e) { // This happens when the code inside the JMX bean threw an exception, so // log it and don't output the bean. LOG.error("Problem while trying to process JMX query: " + qry + " with MBean " + oname, e); continue; } jg.writeStartObject(); jg.writeStringField("name", oname.toString()); jg.writeStringField("modelerType", code); if ((attribute != null) && (attributeinfo == null)) { jg.writeStringField("result", "ERROR"); jg.writeStringField("message", "No attribute with name " + attribute + " was found."); jg.writeEndObject(); jg.writeEndArray(); jg.close(); response.setStatus(HttpServletResponse.SC_NOT_FOUND); return; } if (attribute != null) { writeAttribute(jg, attribute, attributeinfo); } else { MBeanAttributeInfo attrs[] = minfo.getAttributes(); for (int i = 0; i < attrs.length; i++) { writeAttribute(jg, oname, attrs[i]); } } jg.writeEndObject(); } jg.writeEndArray(); }