diff options
Diffstat (limited to 'authz-core/src/main/java/com/att/cssa/rserv/Content.java')
| -rw-r--r-- | authz-core/src/main/java/com/att/cssa/rserv/Content.java | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/authz-core/src/main/java/com/att/cssa/rserv/Content.java b/authz-core/src/main/java/com/att/cssa/rserv/Content.java new file mode 100644 index 00000000..fd6c8a58 --- /dev/null +++ b/authz-core/src/main/java/com/att/cssa/rserv/Content.java @@ -0,0 +1,116 @@ +/*******************************************************************************
+ * ============LICENSE_START====================================================
+ * * org.onap.aai
+ * * ===========================================================================
+ * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * * Copyright © 2017 Amdocs
+ * * ===========================================================================
+ * * Licensed under the Apache License, Version 2.0 (the "License");
+ * * you may not use this file except in compliance with the License.
+ * * You may obtain a copy of the License at
+ * *
+ * * http://www.apache.org/licenses/LICENSE-2.0
+ * *
+ * * Unless required by applicable law or agreed to in writing, software
+ * * distributed under the License is distributed on an "AS IS" BASIS,
+ * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * * See the License for the specific language governing permissions and
+ * * limitations under the License.
+ * * ============LICENSE_END====================================================
+ * *
+ * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * *
+ ******************************************************************************/
+package com.att.cssa.rserv;
+
+import java.util.List;
+
+import com.att.inno.env.Trans;
+
+
+
+/**
+ * A Class to hold Service "ContentTypes", and to match incoming "Accept" types from HTTP.
+ *
+ * This is a multi-use class built to use the same Parser for ContentTypes and Accept.
+ *
+ * Thus, you would create and use "Content.Type" within your service, and use it to match
+ * Accept Strings. What is returned is an Integer (for faster processing), which can be
+ * used in a switch statement to act on match different Actions. The server should
+ * know which behaviors match.
+ *
+ * "bestMatch" returns an integer for the best match, or -1 if no matches.
+ *
+ *
+ */
+public abstract class Content<TRANS extends Trans> {
+ public static final String Q = "q";
+ protected abstract Pair<String,Pair<HttpCode<TRANS,?>,List<Pair<String,Object>>>> types(HttpCode<TRANS,?> code, String str);
+ protected abstract boolean props(Pair<String, Pair<HttpCode<TRANS,?>,List<Pair<String,Object>>>> type, String tag, String value);
+
+ /**
+ * Parse a Content-Type/Accept. As found, call "types" and "props", which do different
+ * things depending on if it's a Content-Type or Accepts.
+ *
+ * For Content-Type, it builds a tree suitable for Comparison
+ * For Accepts, it compares against the tree, and builds an acceptable type list
+ *
+ * Since this parse code is used for every incoming HTTP transaction, I have removed the implementation
+ * that uses String.split, and replaced with integers evaluating the Byte array. This results
+ * in only the necessary strings created, resulting in 1/3 better speed, and less
+ * Garbage collection.
+ *
+ * @param trans
+ * @param code
+ * @param cntnt
+ * @return
+ */
+ protected boolean parse(HttpCode<TRANS,?> code, String cntnt) {
+ byte bytes[] = cntnt.getBytes();
+ boolean contType=false,contProp=true;
+ int cis,cie=-1,cend;
+ int sis,sie,send;
+ do {
+ cis = cie+1;
+ cie = cntnt.indexOf(',',cis);
+ cend = cie<0?bytes.length:cie;
+ // Start SEMIS
+ sie=cis-1;
+ Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>> me = null;
+ do {
+ sis = sie+1;
+ sie = cntnt.indexOf(';',sis);
+ send = sie>cend || sie<0?cend:sie;
+ if(me==null) {
+ String semi = new String(bytes,sis,send-sis);
+ // trans.checkpoint(semi);
+ // Look at first entity within comma group
+ // Is this an acceptable Type?
+ me=types(code, semi);
+ if(me==null) {
+ sie=-1; // skip the rest of the processing... not a type
+ } else {
+ contType=true;
+ }
+ } else { // We've looped past the first Semi, now process as properties
+ // If there are additional elements (more entities within Semi Colons)
+ // apply Propertys
+ int eq = cntnt.indexOf('=',sis);
+ if(eq>sis && eq<send) {
+ String tag = new String(bytes,sis,eq-sis);
+ String value = new String(bytes,eq+1,send-(eq+1));
+ // trans.checkpoint(" Prop " + tag + "=" + value);
+ boolean bool = props(me,tag,value);
+ if(!bool) {
+ contProp=false;
+ }
+ }
+ }
+ // End Property
+ } while(sie<=cend && sie>=cis);
+ // End SEMIS
+ } while(cie>=0);
+ return contType && contProp; // for use in finds, True if a type found AND all props matched
+ }
+
+}
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