Java tutorial
/* * NOTE: This copyright does *not* cover user programs that use HQ * program services by normal system calls through the application * program interfaces provided as part of the Hyperic Plug-in Development * Kit or the Hyperic Client Development Kit - this is merely considered * normal use of the program, and does *not* fall under the heading of * "derived work". * * Copyright (C) [2004, 2005, 2006], Hyperic, Inc. * This file is part of HQ. * * HQ is free software; you can redistribute it and/or modify * it under the terms version 2 of the GNU General Public License as * published by the Free Software Foundation. This program is distributed * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without * even the implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA. */ package org.hyperic.hq.plugin.websphere.jmx; import com.ibm.websphere.management.AdminClient; import com.ibm.websphere.management.exception.ConnectorException; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import java.util.Properties; import javax.management.Attribute; import javax.management.AttributeList; import javax.management.InstanceNotFoundException; import javax.management.ObjectName; import javax.management.ReflectionException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class WebSphereQuery { private static final Log log = LogFactory.getLog(WebSphereQuery.class.getName()); private static final String[] NOOP_ATTRIBUTE_NAMES = new String[0]; private static final Properties NOOP_PROPERTIES = new Properties(); private WebSphereQuery parent; private String name; private String cell; private String version; protected AdminClient mserver; protected ObjectName jmxObjectName; protected Map attrs = new HashMap(); public WebSphereQuery cloneInstance() { WebSphereQuery query; try { query = (WebSphereQuery) this.getClass().newInstance(); } catch (InstantiationException e) { throw new IllegalArgumentException(e.getMessage()); } catch (IllegalAccessException e) { throw new IllegalArgumentException(e.getMessage()); } query.setParent(getParent()); query.setName(getName()); query.setVersion(getVersion()); query.setMBeanServer(getMBeanServer()); return query; } public boolean apply() { return true; } public String getResourceType() { return null; } public String getPropertyName() { return null; } public String getMBeanType() { return null; } public String getMBeanAlias() { return getMBeanType(); } public String getScope() { WebSphereQuery query = getParent(); StringBuffer scope = new StringBuffer(); scope.append("type="); scope.append(getMBeanType()); do { scope.append(","); scope.append(query.getMBeanAlias()); scope.append("="); scope.append(query.getName()); } while ((query = query.getParent()) != null); return scope.toString(); } public WebSphereQuery getParent() { return this.parent; } public WebSphereQuery getResourceParent() { return getParent(); } public String getResourceName() { return getResourceParent().getResourceType() + " " + getResourceType(); } public String getFullName() { StringBuffer name = new StringBuffer(); ArrayList names = new ArrayList(); WebSphereQuery query = this; do { names.add(query.getName()); } while ((query = query.getParent()) != null); for (int i = names.size() - 1; i >= 0; i--) { name.append(names.get(i)); if (i != 0) { name.append(" "); } } return name.toString(); } public void setParent(WebSphereQuery value) { this.parent = value; this.version = this.parent.version; } public String getName() { return this.name; } public void setName(String value) { this.name = value; } public String getCell() { return this.cell; } public void setCell(String value) { this.cell = value; } public String getVersion() { return this.version; } public void setVersion(String version) { this.version = version; } public void configure(Properties props) { props.setProperty(getPropertyName(), getName()); } public Properties getProperties() { Properties props = new Properties(); configure(props); return props; } public Properties getMetricProperties() { return new Properties(); } public boolean hasControl() { return false; } public Properties getCustomProperties() { if (this.attrs.size() == 0) { return NOOP_PROPERTIES; } Properties cprops = new Properties(); cprops.putAll(this.attrs); return cprops; } public void setMBeanServer(AdminClient server) { this.mserver = server; } public AdminClient getMBeanServer() { return this.mserver; } public void setObjectName(ObjectName name) { this.jmxObjectName = name; } public ObjectName getObjectName() { return this.jmxObjectName; } public String[] getAttributeNames() { return NOOP_ATTRIBUTE_NAMES; } public boolean getAttributes(AdminClient mServer, ObjectName name) { return getAttributes(mServer, name, getAttributeNames()); } private void logAttrFailure(ObjectName name, Exception e) { String msg = "Failed to get attributes for " + name; log.debug(msg, e); } public boolean getAttributes(AdminClient mServer, ObjectName name, String[] attrNames) { AttributeList list; if (attrNames.length == 0) { return true; } try { list = mServer.getAttributes(name, attrNames); } catch (InstanceNotFoundException e) { logAttrFailure(name, e); return false; } catch (ReflectionException e) { logAttrFailure(name, e); return false; } catch (ConnectorException e) { logAttrFailure(name, e); return false; } if (list == null) { return false; } for (int i = 0; i < list.size(); i++) { Attribute attr = (Attribute) list.get(i); Object obj = attr.getValue(); if (obj != null) { this.attrs.put(attr.getName(), obj.toString()); } } return true; } public String getAttribute(String name) { return (String) this.attrs.get(name); } public String getAttribute(String name, String defval) { String attr = getAttribute(name); if (attr == null) { return defval; } return attr; } }