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From mtaylor <...@git.apache.org>
Subject [GitHub] activemq-artemis pull request #632: ARTEMIS-604 - Message Serialization Impr...
Date Mon, 18 Jul 2016 16:31:52 GMT
Github user mtaylor commented on a diff in the pull request:

    https://github.com/apache/activemq-artemis/pull/632#discussion_r71181087
  
    --- Diff: artemis-core-client/src/main/java/org/apache/activemq/artemis/utils/ObjectInputStreamWithClassLoader.java
---
    @@ -25,23 +25,110 @@
     import java.security.AccessController;
     import java.security.PrivilegedActionException;
     import java.security.PrivilegedExceptionAction;
    +import java.util.ArrayList;
    +import java.util.Arrays;
    +import java.util.Iterator;
    +import java.util.List;
     
     public class ObjectInputStreamWithClassLoader extends ObjectInputStream {
     
        // Constants ------------------------------------------------------------------------------------
     
    +   /**
    +    * Value used to indicate that all classes should be white or black listed,
    +    */
    +   public static final String CATCH_ALL_WILDCARD = "*";
    +
    +   public static final String WHITELIST_PROPERTY = "org.apache.activemq.artemis.jms.deserialization.whitelist";
    +   public static final String BLACKLIST_PROPERTY = "org.apache.activemq.artemis.jms.deserialization.blacklist";
    +
        // Attributes -----------------------------------------------------------------------------------
     
    +   private List<String> whiteList = new ArrayList<>();
    +   private List<String> blackList = new ArrayList<>();
    +
        // Static ---------------------------------------------------------------------------------------
     
        // Constructors ---------------------------------------------------------------------------------
     
        public ObjectInputStreamWithClassLoader(final InputStream in) throws IOException {
           super(in);
    +      String whiteList = System.getProperty(WHITELIST_PROPERTY, null);
    +      setWhiteList(whiteList);
    +
    +      String blackList = System.getProperty(BLACKLIST_PROPERTY, null);
    +      setBlackList(blackList);
        }
     
        // Public ---------------------------------------------------------------------------------------
     
    +   /**
    +    * @return the whiteList configured on this policy instance.
    +    */
    +   public String getWhiteList() {
    +      Iterator<String> entries = whiteList.iterator();
    +      StringBuilder builder = new StringBuilder();
    +
    +      while (entries.hasNext()) {
    +         builder.append(entries.next());
    +         if (entries.hasNext()) {
    +            builder.append(",");
    +         }
    +      }
    +      return builder.toString();
    +   }
    +
    +   /**
    +    * @return the blackList configured on this policy instance.
    +    */
    +   public String getBlackList() {
    +      Iterator<String> entries = blackList.iterator();
    +      StringBuilder builder = new StringBuilder();
    +
    +      while (entries.hasNext()) {
    +         builder.append(entries.next());
    +         if (entries.hasNext()) {
    +            builder.append(",");
    +         }
    +      }
    +
    --- End diff --
    
    You could either use a third part StringUtil (like ApacheCommons) to do this, or at least
pull this into it's own utility method in Artemis StringUtils.  e,g,


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