Java tutorial
/************************************************************************* * Copyright 2009-2014 Eucalyptus Systems, Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 3 of the License. * * 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, see http://www.gnu.org/licenses/. * * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need * additional information or have any questions. * * This file may incorporate work covered under the following copyright * and permission notice: * * Software License Agreement (BSD License) * * Copyright (c) 2008, Regents of the University of California * All rights reserved. * * Redistribution and use of this software in source and binary forms, * with or without modification, are permitted provided that the * following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE * THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL, * COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE, * AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING * IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, * SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, * WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION, * REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO * IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT * NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS. ************************************************************************/ package com.eucalyptus.vm; import javax.persistence.EntityTransaction; import org.apache.log4j.Logger; import com.eucalyptus.bootstrap.Databases; import com.eucalyptus.cluster.ClusterConfiguration; import com.eucalyptus.component.Components; import com.eucalyptus.component.ServiceConfiguration; import com.eucalyptus.component.id.ClusterController; import com.eucalyptus.entities.Entities; import com.google.common.base.Optional; public class MetadataRequest { private static Logger LOG = Logger.getLogger(MetadataRequest.class); private final String requestIp; private final String metadataName; private final String localPath; private final String vmId; public MetadataRequest(String requestIp, String requestUrl, Optional<String> vmId) { try { this.requestIp = requestIp; requestUrl = requestUrl.replaceAll("[/]+", "/"); String[] path = requestUrl.split("/", 2); if (path.length > 0) { this.metadataName = path[0]; if (path.length > 1) { this.localPath = path[1].replaceFirst("^[/]*", ""); } else { this.localPath = ""; } } else { this.metadataName = ""; this.localPath = ""; } this.vmId = vmId.orNull(); } finally { LOG.debug((this.vmId != null ? "Instance" : "External") + " Metadata: requestIp=" + this.requestIp + " metadataName=" + this.metadataName + " metadataPath=" + this.localPath + " requestUrl=" + requestUrl); } } public boolean isInstance() { return vmId != null; } /** * @return the requestIp */ public String getRequestIp() { return this.requestIp; } /** * @return the metadataName */ public String getMetadataName() { return this.metadataName; } /** * @return the localPath */ public String getLocalPath() { return this.localPath; } public String getVmInstanceId() { return this.vmId; } public boolean isSystem() { for (ServiceConfiguration config : Components.lookup(ClusterController.class).services()) { if (config.getHostName().equals(this.requestIp)) { return true; } else if (config instanceof ClusterConfiguration && ((ClusterConfiguration) config).getSourceHostName().equals(this.requestIp)) { return true; } } if (!Databases.isVolatile()) { ClusterConfiguration cConfig = new ClusterConfiguration(); cConfig.setSourceHostName(this.requestIp); EntityTransaction db = Entities.get(ClusterConfiguration.class); try { ClusterConfiguration ccAddresses = Entities.uniqueResult(cConfig); if (ccAddresses.getSourceHostName().equals(this.requestIp) || ccAddresses.getHostName().equals(this.requestIp)) { db.commit(); return true; } else { db.commit(); } } catch (Exception e) { LOG.debug("Unable to find Cluster Controller request address.", e); db.rollback(); } } return false; } @Override public boolean equals(final Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; final MetadataRequest that = (MetadataRequest) o; if (localPath != null ? !localPath.equals(that.localPath) : that.localPath != null) return false; if (metadataName != null ? !metadataName.equals(that.metadataName) : that.metadataName != null) return false; if (requestIp != null ? !requestIp.equals(that.requestIp) : that.requestIp != null) return false; if (vmId != null ? !vmId.equals(that.vmId) : that.vmId != null) return false; return true; } @Override public int hashCode() { int result = requestIp != null ? requestIp.hashCode() : 0; result = 31 * result + (metadataName != null ? metadataName.hashCode() : 0); result = 31 * result + (localPath != null ? localPath.hashCode() : 0); result = 31 * result + (vmId != null ? vmId.hashCode() : 0); return result; } }