1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany
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2 | //
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3 | // Licensed under the Apache License, Version 2.0 (the "License");
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4 | // you may not use this file except in compliance with the License.
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5 | // You may obtain a copy of the License at
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6 | //
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7 | // http://www.apache.org/licenses/LICENSE-2.0
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8 | //
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9 | // Unless required by applicable law or agreed to in writing, software
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10 | // distributed under the License is distributed on an "AS IS" BASIS,
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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12 | // See the License for the specific language governing permissions and
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13 | // limitations under the License.
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14 |
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15 | package de.ugoe.cs.autoquest.plugin.http;
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16 |
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17 | import java.io.StringWriter;
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18 | import java.util.ArrayList;
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19 | import java.util.Collection;
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20 | import java.util.HashSet;
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21 | import java.util.Iterator;
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22 | import java.util.LinkedList;
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23 | import java.util.List;
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24 | import java.util.Set;
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25 |
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26 | import javax.xml.transform.Transformer;
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27 | import javax.xml.transform.TransformerException;
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28 | import javax.xml.transform.TransformerFactory;
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29 | import javax.xml.transform.TransformerFactoryConfigurationError;
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30 | import javax.xml.transform.dom.DOMSource;
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31 | import javax.xml.transform.stream.StreamResult;
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32 |
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33 | import org.w3c.dom.Attr;
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34 | import org.w3c.dom.Element;
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35 | import org.w3c.dom.Node;
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36 | import org.w3c.dom.NodeList;
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37 |
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38 | import de.ugoe.cs.autoquest.eventcore.Event;
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39 | import de.ugoe.cs.autoquest.plugin.http.eventcore.EqualSOAPDataMap;
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40 | import de.ugoe.cs.autoquest.plugin.http.eventcore.SOAPEventType;
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41 | import de.ugoe.cs.autoquest.plugin.http.eventcore.SimpleSOAPEventType;
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42 |
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43 | /**
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44 | * <p>
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45 | * Utilities for working with SOAP events. Their main task is to simply working with
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46 | * {@link SimpleSOAPEventType} and {@link SOAPEventType}.
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47 | * </p>
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48 | *
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49 | * @author Steffen Herbold
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50 | */
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51 | public class SOAPUtils {
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52 |
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53 | /**
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54 | * <p>
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55 | * Defines how sequences are ordered:
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56 | * <ul>
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57 | * <li>REQUEST: by the request order id</li>
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58 | * <li>RESPONSE: by the response order id</li>
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59 | * </ul>
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60 | * </p>
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61 | *
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62 | * @author Steffen Herbold
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63 | */
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64 | public enum SequenceOrder {
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65 | REQUEST, RESPONSE
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66 | }
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67 |
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68 | /**
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69 | * <p>
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70 | * Replaces events with a {@link SOAPEventType} with new events of {@link SimpleSOAPEventType}
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71 | * and no target.
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72 | * </p>
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73 | *
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74 | * @param sequences
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75 | * sequences where the events are replaced
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76 | * @param keepOnlySOAPEvents
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77 | * if true, all events that are not of SOAPEventType or SimpleSOAPEventType are
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78 | * removed
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79 | * @return sequences with {@link SimpleSOAPEventType}s instead of {@link SOAPEventType}s
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80 | */
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81 | public static Collection<List<Event>> convertToSimpleSOAPEvent(Collection<List<Event>> sequences,
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82 | boolean keepOnlySOAPEvents)
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83 | {
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84 | Collection<List<Event>> newSequences = new LinkedList<>();
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85 | EqualSOAPDataMap equalSOAPDataMap = new EqualSOAPDataMap();
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86 | for (List<Event> sequence : sequences) {
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87 | List<Event> newSequence = null;
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88 | if (sequence != null) {
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89 | newSequence = new LinkedList<>();
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90 | for (Event event : sequence) {
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91 | if (event.getType() instanceof SOAPEventType) {
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92 | SOAPEventType eventType = (SOAPEventType) event.getType();
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93 | newSequence.add(new Event(new SimpleSOAPEventType(eventType
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94 | .getCalledMethod(), eventType.getServiceName(), eventType
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95 | .getClientName(), eventType.getSoapRequestBody(), equalSOAPDataMap)));
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96 | }
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97 | else {
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98 | if (!keepOnlySOAPEvents || event.getType() instanceof SimpleSOAPEventType) {
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99 | newSequence.add(event);
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100 | }
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101 | }
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102 | }
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103 | }
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104 | newSequences.add(newSequence);
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105 | }
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106 | return newSequences;
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107 | }
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108 |
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109 | /**
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110 | * <p>
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111 | * Removes all non SOAP events from the contained sequences
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112 | * </p>
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113 | *
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114 | * @param sequences
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115 | * sequences where the events are replaced
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116 | */
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117 | public static Collection<List<Event>> removeNonSOAPEvents(Collection<List<Event>> sequences) {
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118 | Collection<List<Event>> soapOnlySequences = new LinkedList<>();
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119 | for (List<Event> sequence : sequences) {
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120 | soapOnlySequences.add(removeNonSOAPEvents(sequence));
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121 | }
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122 | return soapOnlySequences;
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123 | }
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124 |
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125 | /**
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126 | * <p>
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127 | * Removes all non SOAP events from a sequence
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128 | * </p>
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129 | *
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130 | * @param sequence
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131 | * sequence where the events are replaced
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132 | */
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133 | public static List<Event> removeNonSOAPEvents(List<Event> sequence) {
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134 | List<Event> soapOnlySequence = new LinkedList<>();
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135 | for (Event event : sequence) {
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136 | if (event.getType() instanceof SOAPEventType) {
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137 | soapOnlySequence.add(event);
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138 | }
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139 | }
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140 | return soapOnlySequence;
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141 | }
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142 |
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143 | /**
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144 | * <p>
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145 | * Helper function to get the name of a service from a SOAP event.
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146 | * </p>
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147 | *
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148 | * @param event
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149 | * event for which the service name is retrieved
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150 | * @return service name
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151 | */
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152 | public static String getServiceNameFromEvent(Event event) {
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153 | if (event.getType() instanceof SOAPEventType) {
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154 | return ((SOAPEventType) event.getType()).getServiceName();
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155 | }
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156 | else if (event.getType() instanceof SimpleSOAPEventType) {
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157 | return ((SimpleSOAPEventType) event.getType()).getServiceName();
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158 | }
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159 | else {
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160 | throw new RuntimeException(
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161 | "Wrong event type. Only SOAPEventType and SimpleSOAPEventType supported but was: " +
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162 | event.getType().getClass().getName());
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163 | }
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164 | }
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165 |
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166 | /**
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167 | *
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168 | * <p>
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169 | * Helper function to get the called method from a SOAP event
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170 | * </p>
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171 | *
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172 | * @param event
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173 | * event for which the called method is retrieved
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174 | * @return called method
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175 | */
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176 | public static String getCalledMethodFromEvent(Event event) {
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177 | if (event.getType() instanceof SOAPEventType) {
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178 | return ((SOAPEventType) event.getType()).getCalledMethod();
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179 | }
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180 | else if (event.getType() instanceof SimpleSOAPEventType) {
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181 | return ((SimpleSOAPEventType) event.getType()).getCalledMethod();
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182 | }
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183 | else {
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184 | throw new RuntimeException(
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185 | "Wrong event type. Only SOAPEventType and SimpleSOAPEventType supported but was: " +
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186 | event.getType().getClass().getName());
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187 | }
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188 | }
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189 |
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190 | /**
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191 | * <p>
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192 | * Helper function to get the name of a client from a SOAP event.
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193 | * </p>
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194 | *
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195 | * @param event
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196 | * event for which the client name is retrieved
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197 | * @return service name
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198 | */
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199 | public static String getClientNameFromEvent(Event event) {
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200 | if (event.getType() instanceof SOAPEventType) {
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201 | return ((SOAPEventType) event.getType()).getClientName();
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202 | }
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203 | else if (event.getType() instanceof SimpleSOAPEventType) {
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204 | return ((SimpleSOAPEventType) event.getType()).getClientName();
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205 | }
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206 | else {
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207 | throw new RuntimeException(
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208 | "Wrong event type. Only SOAPEventType and SimpleSOAPEventType supported but was: " +
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209 | event.getType().getClass().getName());
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210 | }
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211 | }
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212 |
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213 | /**
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214 | * <p>
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215 | * Helper function to get the body of a SOAP request.
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216 | * </p>
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217 | *
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218 | * @param event
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219 | * event for which the SOAP request body is retrieved
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220 | * @return body of the SOAP event
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221 | */
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222 | public static Element getSoapRequestBodyFromEvent(Event event) {
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223 | return getSoapRequestBodyFromEvent(event, false);
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224 | }
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225 |
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226 | /**
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227 | * <p>
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228 | * Helper function to get the body of a SOAP request.
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229 | * </p>
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230 | *
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231 | * @param event
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232 | * event for which the SOAP request body is retrieved
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233 | * @param useRandomRequestBodies
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234 | * defines is random request bodies are used or the body of the associated event
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235 | * @return body of the SOAP event
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236 | */
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237 | public static Element getSoapRequestBodyFromEvent(Event event, boolean useRandomRequestBodies) {
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238 | Element requestBody = null;
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239 | if (event.getType() instanceof SOAPEventType) {
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240 | requestBody = ((SOAPEventType) event.getType()).getSoapRequestBody();
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241 | }
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242 | else if (event.getType() instanceof SimpleSOAPEventType) {
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243 | if (useRandomRequestBodies) {
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244 | requestBody = ((SimpleSOAPEventType) event.getType()).getRandomSoapRequestBody();
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245 | }
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246 | else {
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247 | requestBody = ((SimpleSOAPEventType) event.getType()).getSoapRequestBody();
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248 | }
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249 | }
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250 | return requestBody;
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251 | }
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252 |
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253 | /**
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254 | * <p>
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255 | * returns the XML serialization of a DOM node; located here because it is used for SOAP request
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256 | * bodies
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257 | * </p>
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258 | *
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259 | * @param node
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260 | * DOM node that is serialized
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261 | * @return XML serialization as String; null if node is null
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262 | */
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263 | public static String getSerialization(Node node) {
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264 | if (node == null) {
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265 | return null;
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266 | }
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267 | try {
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268 | StringWriter writer = new StringWriter();
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269 | Transformer transformer = TransformerFactory.newInstance().newTransformer();
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270 | transformer.transform(new DOMSource(node), new StreamResult(writer));
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271 | return writer.toString();
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272 | }
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273 | catch (TransformerFactoryConfigurationError | TransformerException e) {
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274 | throw new IllegalArgumentException(
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275 | "could not create serialization for SOAP request body.",
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276 | e);
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277 | }
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278 | }
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279 |
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280 | /**
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281 | * <p>
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282 | * Fetches all {@link Element}s that are direct children of the parent node, whose name matches
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283 | * the given name.
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284 | * </p>
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285 | *
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286 | * @param typeNameRaw
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287 | * name of elements that are looked for
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288 | * @param parentNode
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289 | * DOM node in which the elements are searched for
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290 | * @return found {@link Element}s
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291 | */
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292 | public static List<Element> getMatchingChildNode(String typeNameRaw, Element parentNode) {
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293 | List<Element> matchingNodes = new ArrayList<>();
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294 | Node parameterNode = null;
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295 | if (parentNode != null) {
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296 | NodeList parameterNodes = parentNode.getChildNodes();
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297 | String[] typeNameSplit = typeNameRaw.split(":");
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298 | String typeName = typeNameSplit[typeNameSplit.length - 1];
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299 | for (int i = 0; i < parameterNodes.getLength(); i++) {
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300 | parameterNode = parameterNodes.item(i);
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301 | if (parameterNode.getNodeType() == Node.ELEMENT_NODE) {
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302 | String[] parameterNodeSplit = parameterNode.getNodeName().split(":");
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303 | String parameterNodeName = parameterNodeSplit[parameterNodeSplit.length - 1];
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304 | if (typeName.equals(parameterNodeName)) {
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305 | matchingNodes.add((Element) parameterNode);
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306 | }
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307 | }
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308 | }
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309 | }
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310 | return matchingNodes;
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311 | }
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312 |
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313 | /**
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314 | * <p>
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315 | * Returns the values found in a currentNode for a defined valueName. To this aim, this methods
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316 | * first determines if there is an attribute with the name "valueName". If this is the case, the
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317 | * value of this attribute is returned. Otherwise, the methods looks for {@link Element}s that
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318 | * are direct children of the provided DOM node with the given name and returns the text content
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319 | * of those nodes.
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320 | * </p>
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321 | * <p>
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322 | * In case no values can be found, an empty list is returned
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323 | *
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324 | * @param valueName
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325 | * name of the value that is retrieved
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326 | * @param node
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327 | * node for which the value is retrieved
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328 | * @return list of the found values.
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329 | */
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330 | public static List<String> getValuesFromElement(String valueName, Element node) {
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331 | List<String> attributeValues = new LinkedList<>();
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332 |
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333 | if (node != null) {
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334 | // first check attributes of the node
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335 | Attr attribute = node.getAttributeNode(valueName);
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336 | if (attribute != null) {
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337 | attributeValues.add(attribute.getValue());
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338 | }
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339 | else {
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340 | // now check elements
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341 | List<Element> elements = getMatchingChildNode(valueName, node);
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342 | for (Element element : elements) {
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343 | attributeValues.add(element.getTextContent());
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344 | }
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345 | }
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346 | }
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347 |
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348 | return attributeValues;
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349 | }
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350 |
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351 | /**
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352 | * <p>
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353 | * Allows the removal of pre- and suffixes from SOAP operation names in
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354 | * {@link SimpleSOAPEventType}.
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355 | * </p>
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356 | *
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357 | * @param sequences
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358 | * sequences where the operation names are normalized
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359 | */
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360 | public static Collection<List<Event>> normalizeOperationNames(Collection<List<Event>> sequences,
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361 | String prefixToRemove,
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362 | String suffixToRemove)
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363 | {
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364 | Collection<List<Event>> normalizedSequences = new LinkedList<>();
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365 | for (List<Event> sequence : sequences) {
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366 | List<Event> normalizedSequence = new LinkedList<>();
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367 | for (Iterator<Event> eventIter = sequence.iterator(); eventIter.hasNext();) {
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368 | Event event = eventIter.next();
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369 | if ((event.getType() instanceof SimpleSOAPEventType)) {
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370 | SimpleSOAPEventType eventType = (SimpleSOAPEventType) event.getType();
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371 | String methodName = eventType.getCalledMethod();
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372 | if (prefixToRemove != null && methodName.startsWith(prefixToRemove)) {
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373 | methodName =
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374 | methodName.substring(prefixToRemove.length(), methodName.length());
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375 | // remove prefix
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376 | }
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377 | if (suffixToRemove != null && methodName.endsWith(suffixToRemove)) {
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378 | methodName =
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379 | methodName.substring(0, methodName.length() - suffixToRemove.length());
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380 | }
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381 | event =
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382 | new Event(new SimpleSOAPEventType(methodName, eventType.getServiceName(),
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383 | eventType.getClientName(),
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384 | eventType.getSoapRequestBody(),
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385 | eventType.getEqualSOAPDataMap()),
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386 | event.getTarget());
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387 | }
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388 | normalizedSequence.add(event);
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389 | }
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390 | normalizedSequences.add(normalizedSequence);
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391 | }
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392 | return normalizedSequences;
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393 | }
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394 |
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395 | /**
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396 | * <p>
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397 | * Sorts the sequences by the orderingId of the requests/responses. This function only supports
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398 | * the ordering of {@link Event}s with a {@link SOAPEventType}.
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399 | * </p>
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400 | *
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401 | * @param sequences
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402 | * sequences to be order
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403 | * @param orderType
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404 | * determines if sequences are ordered by request or response
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405 | * @return sorted sequences
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406 | */
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407 | public static Collection<List<Event>> sortSequences(Collection<List<Event>> sequences,
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408 | SequenceOrder orderType)
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409 | {
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410 | Collection<List<Event>> sortedSequences = new LinkedList<>();
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411 | for (List<Event> sequence : sequences) {
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412 | // use insertion sort
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413 | List<Event> sortedSequence = new LinkedList<>();
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414 | long lastOrderId = Long.MIN_VALUE;
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415 | long selectedOrderId;
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416 | Event selectedEvent;
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417 | while (sortedSequence.size() != sequence.size()) {
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418 | selectedEvent = null;
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419 | selectedOrderId = Long.MAX_VALUE;
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420 | for (Event event : sequence) {
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421 | if (!(event.getType() instanceof SOAPEventType)) {
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422 | throw new RuntimeException(
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423 | "Can only order SOAPEventTypes. SimpleSOAPEvent is also not supported. Event type found: " +
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424 | event.getType().getClass().getName());
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425 | }
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426 | SOAPEventType soapEventType = (SOAPEventType) event.getType();
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427 | long eventOrderId;
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428 | switch (orderType)
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429 | {
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430 | case REQUEST:
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431 | eventOrderId = soapEventType.getExchange().getRequest().getOrderingId();
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432 | break;
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433 | case RESPONSE:
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434 | eventOrderId =
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435 | soapEventType.getExchange().getResponse().getOrderingId();
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436 | break;
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437 | default:
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438 | throw new RuntimeException("unsupported order type: " +
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439 | orderType.toString());
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440 | }
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441 | if (eventOrderId > lastOrderId && eventOrderId < selectedOrderId) {
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442 | selectedOrderId = eventOrderId;
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443 | selectedEvent = event;
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444 | }
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445 | }
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446 | if (selectedEvent != null) {
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447 | sortedSequence.add(selectedEvent);
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448 | lastOrderId = selectedOrderId;
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449 | }
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450 | else {
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451 | throw new RuntimeException(
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452 | "could not select next event; possibly the same order Id for multiple exchanges events!?");
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453 | }
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454 | }
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455 | sortedSequences.add(sortedSequence);
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456 | }
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457 | return sortedSequences;
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458 | }
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459 |
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460 | /**
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461 | * <p>
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462 | * Removes calls to and from all ignored services from the sequences.
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463 | * </p>
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464 | *
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465 | * @param sequences sequences where the ignored services are removed
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466 | * @param ignoredServicesString comma separted string that defines the ignored services
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467 | * @return sequences without events that reference the ignored services
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468 | */
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469 | public static Collection<List<Event>> removeCallsToIgnoredServices(Collection<List<Event>> sequences, String ignoredServicesString) {
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470 | Set<String> ignoredServices = new HashSet<>();
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471 | if (ignoredServicesString != null) {
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472 | for (String service : ignoredServicesString.split(",")) {
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473 | ignoredServices.add(service.trim());
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474 | }
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475 | }
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476 | return removeCallsToIgnoredServices(sequences, ignoredServices);
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477 | }
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478 |
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479 | /**
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480 | * <p>
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481 | * Removes calls to and from all ignored services from the sequences.
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482 | * </p>
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483 | *
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484 | * @param sequences sequences where the ignored services are removed
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485 | * @param ignoredServices set with all ignored service names
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486 | * @return sequences without events that reference the ignored services
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487 | */
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488 | public static Collection<List<Event>> removeCallsToIgnoredServices(Collection<List<Event>> sequences, Set<String> ignoredServices) {
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489 | Collection<List<Event>> onlyAcceptedServicesSequences = new LinkedList<>();
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490 | for (List<Event> sequence : sequences) {
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491 | List<Event> onlyAcceptedServicesSequence = new LinkedList<>();
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492 | for (Event event : sequence) {
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493 | SimpleSOAPEventType eventType = (SimpleSOAPEventType) event.getType();
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494 | if (!ignoredServices.contains(eventType.getServiceName()) &&
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495 | !ignoredServices.contains(eventType.getClientName()) ) {
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496 | onlyAcceptedServicesSequence.add(event);
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497 | }
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498 | }
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499 | onlyAcceptedServicesSequences.add(onlyAcceptedServicesSequence);
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500 | }
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501 | return onlyAcceptedServicesSequences;
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502 | }
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503 |
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504 | /**
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505 | * <p>
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506 | * prevent instantiation
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507 | * </p>
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508 | */
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509 | private SOAPUtils() {}
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510 | }
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