| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.ovf.xml.internal; |
| 20 | |
| 21 | import static org.jclouds.util.SaxUtils.cleanseAttributes; |
| 22 | import static org.jclouds.util.SaxUtils.currentOrNull; |
| 23 | import static org.jclouds.util.SaxUtils.equalsOrSuffix; |
| 24 | |
| 25 | import java.util.Map; |
| 26 | |
| 27 | import javax.inject.Named; |
| 28 | import javax.inject.Provider; |
| 29 | |
| 30 | import org.jclouds.ovf.Section; |
| 31 | import org.jclouds.ovf.internal.BaseVirtualSystem; |
| 32 | import org.jclouds.ovf.xml.OperatingSystemSectionHandler; |
| 33 | import org.jclouds.ovf.xml.ProductSectionHandler; |
| 34 | import org.jclouds.ovf.xml.SectionHandler; |
| 35 | import org.jclouds.ovf.xml.VirtualHardwareSectionHandler; |
| 36 | import org.xml.sax.Attributes; |
| 37 | import org.xml.sax.SAXException; |
| 38 | |
| 39 | import com.google.common.collect.ImmutableMap; |
| 40 | import com.google.inject.Inject; |
| 41 | |
| 42 | /** |
| 43 | * @author Adrian Cole |
| 44 | */ |
| 45 | public class BaseVirtualSystemHandler<T extends BaseVirtualSystem<T>, B extends BaseVirtualSystem.Builder<T>> extends |
| 46 | SectionHandler<T, B> { |
| 47 | |
| 48 | private final OperatingSystemSectionHandler osHandler; |
| 49 | private final VirtualHardwareSectionHandler hardwareHandler; |
| 50 | private final ProductSectionHandler productHandler; |
| 51 | |
| 52 | @Inject |
| 53 | public BaseVirtualSystemHandler(Provider<B> builderProvider, OperatingSystemSectionHandler osHandler, |
| 54 | VirtualHardwareSectionHandler hardwareHandler, ProductSectionHandler productHandler) { |
| 55 | super(builderProvider); |
| 56 | this.osHandler = osHandler; |
| 57 | this.hardwareHandler = hardwareHandler; |
| 58 | this.productHandler = productHandler; |
| 59 | } |
| 60 | |
| 61 | @SuppressWarnings("unchecked") |
| 62 | protected SectionHandler defaultSectionHandler = SectionHandler.create(); |
| 63 | |
| 64 | @SuppressWarnings("unchecked") |
| 65 | protected Map<String, Provider<? extends SectionHandler>> extensionHandlers = ImmutableMap |
| 66 | .<String, Provider<? extends SectionHandler>> of(); |
| 67 | |
| 68 | @SuppressWarnings("unchecked") |
| 69 | @Inject(optional = true) |
| 70 | protected void setExtensionHandlers( |
| 71 | @Named("VirtualSystem") Map<String, Provider<? extends SectionHandler>> extensionHandlers) { |
| 72 | extensionHandlers = ImmutableMap.<String, Provider<? extends SectionHandler>> builder().putAll( |
| 73 | this.extensionHandlers).putAll(extensionHandlers).build(); |
| 74 | } |
| 75 | |
| 76 | @SuppressWarnings("unchecked") |
| 77 | protected SectionHandler extensionHandler; |
| 78 | |
| 79 | private boolean inHardware; |
| 80 | private boolean inOs; |
| 81 | private boolean inProduct; |
| 82 | private boolean inSection; |
| 83 | private boolean inExtensionSection; |
| 84 | private int depth; |
| 85 | |
| 86 | public void startElement(String uri, String localName, String qName, Attributes attrs) throws SAXException { |
| 87 | Map<String, String> attributes = cleanseAttributes(attrs); |
| 88 | depth++; |
| 89 | if (depth == 2) { |
| 90 | if (equalsOrSuffix(qName, "VirtualHardwareSection")) { |
| 91 | inHardware = true; |
| 92 | } else if (equalsOrSuffix(qName, "OperatingSystemSection")) { |
| 93 | inOs = true; |
| 94 | } else if (equalsOrSuffix(qName, "ProductSection")) { |
| 95 | inProduct = true; |
| 96 | } else if (extensionHandlers.containsKey(qName)) { |
| 97 | inExtensionSection = true; |
| 98 | extensionHandler = extensionHandlers.get(qName).get(); |
| 99 | } else if (attributes.containsKey("type") && extensionHandlers.containsKey(attributes.get("type"))) { |
| 100 | inExtensionSection = true; |
| 101 | extensionHandler = extensionHandlers.get(attributes.get("type")).get(); |
| 102 | } else if (qName.endsWith("Section")) { |
| 103 | inSection = true; |
| 104 | } |
| 105 | } |
| 106 | if (inHardware) { |
| 107 | hardwareHandler.startElement(uri, localName, qName, attrs); |
| 108 | } else if (inOs) { |
| 109 | osHandler.startElement(uri, localName, qName, attrs); |
| 110 | } else if (inProduct) { |
| 111 | productHandler.startElement(uri, localName, qName, attrs); |
| 112 | } else if (inExtensionSection) { |
| 113 | extensionHandler.startElement(uri, localName, qName, attrs); |
| 114 | } else if (inSection) { |
| 115 | defaultSectionHandler.startElement(uri, localName, qName, attrs); |
| 116 | } else if (equalsOrSuffix(qName, "VirtualSystem")) { |
| 117 | builder.id(attributes.get("id")); |
| 118 | } |
| 119 | |
| 120 | } |
| 121 | |
| 122 | @Override |
| 123 | public void endElement(String uri, String localName, String qName) { |
| 124 | depth--; |
| 125 | if (depth == 1) { |
| 126 | if (equalsOrSuffix(qName, "VirtualHardwareSection")) { |
| 127 | inHardware = false; |
| 128 | builder.virtualHardwareSection(hardwareHandler.getResult()); |
| 129 | } else if (equalsOrSuffix(qName, "OperatingSystemSection")) { |
| 130 | inOs = false; |
| 131 | builder.operatingSystemSection(osHandler.getResult()); |
| 132 | } else if (equalsOrSuffix(qName, "ProductSection")) { |
| 133 | inProduct = false; |
| 134 | builder.productSection(productHandler.getResult()); |
| 135 | } else if (extensionHandlers.containsKey(qName)) { |
| 136 | addAdditionalSection(qName, extensionHandler.getResult()); |
| 137 | inSection = false; |
| 138 | inExtensionSection = false; |
| 139 | } else if (qName.endsWith("Section")) { |
| 140 | addAdditionalSection(qName, inExtensionSection ? extensionHandler.getResult() : defaultSectionHandler |
| 141 | .getResult()); |
| 142 | inSection = false; |
| 143 | inExtensionSection = false; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | if (inHardware) { |
| 148 | hardwareHandler.endElement(uri, localName, qName); |
| 149 | } else if (inOs) { |
| 150 | osHandler.endElement(uri, localName, qName); |
| 151 | } else if (inProduct) { |
| 152 | productHandler.endElement(uri, localName, qName); |
| 153 | } else if (inExtensionSection) { |
| 154 | extensionHandler.endElement(uri, localName, qName); |
| 155 | } else if (inSection) { |
| 156 | defaultSectionHandler.endElement(uri, localName, qName); |
| 157 | } else { |
| 158 | if (equalsOrSuffix(qName, "Info")) { |
| 159 | builder.info(currentOrNull(currentText)); |
| 160 | } else if (equalsOrSuffix(qName, "Name")) { |
| 161 | builder.name(currentOrNull(currentText)); |
| 162 | } |
| 163 | super.endElement(uri, localName, qName); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | @SuppressWarnings("unchecked") |
| 168 | protected void addAdditionalSection(String qName, Section additionalSection) { |
| 169 | builder.additionalSection(qName, additionalSection); |
| 170 | } |
| 171 | |
| 172 | @Override |
| 173 | public void characters(char ch[], int start, int length) { |
| 174 | if (inHardware) { |
| 175 | hardwareHandler.characters(ch, start, length); |
| 176 | } else if (inOs) { |
| 177 | osHandler.characters(ch, start, length); |
| 178 | } else if (inProduct) { |
| 179 | productHandler.characters(ch, start, length); |
| 180 | } else if (inExtensionSection) { |
| 181 | extensionHandler.characters(ch, start, length); |
| 182 | } else if (inSection) { |
| 183 | defaultSectionHandler.characters(ch, start, length); |
| 184 | } else { |
| 185 | super.characters(ch, start, length); |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | } |