[GitHub] [james-project] chibenwa opened a new pull request, #1213: JAMES-3828 Rework AttibuteValue duplication; reject invalid values early

[GitBox <gi...@apache.org>]

chibenwa opened a new pull request, #1213:
URL: https://github.com/apache/james-project/pull/1213

   Prevent:
   
   ```
   exception	java.lang.ClassCastException: class [B cannot be cast to class org.apache.mailet.AttributeValue ([B is in module java.base of loader 'bootstrap'; org.apache.mailet.AttributeValue is in unnamed module of loader 'app')
    at org.apache.mailet.Serializer$MapSerializer.lambda$serialize$0(Serializer.java:507)
     at com.google.common.collect.CollectCollectors.lambda$toImmutableMap$6(CollectCollectors.java:185)
      at java.base/java.util.stream.ReduceOps$3ReducingSink.accept(Unknown Source)
       at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
         at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
          at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
           at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
            at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)
             at org.apache.mailet.Serializer$MapSerializer.serialize(Serializer.java:507)
              at org.apache.mailet.Serializer$MapSerializer.serialize(Serializer.java:503)
               at org.apache.mailet.AttributeValue.toJson(AttributeValue.java:256)
                at org.apache.mailet.AttributeValue.duplicate(AttributeValue.java:250)
                 at org.apache.mailet.Attribute.duplicate(Attribute.java:62)
                  at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
                   at java.base/java.util.HashMap$ValueSpliterator.forEachRemaining(Unknown Source)
                    at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
                     at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
                      at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
                       at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
                        at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)
                         at org.apache.james.server.core.MailImpl.duplicateAttributes(MailImpl.java:117)
                          at org.apache.james.server.core.MailImpl.duplicateWithoutMessage(MailImpl.java:111)
                           at org.apache.james.server.core.MailImpl.duplicate(MailImpl.java:97)
                            at org.apache.james.mailetcontainer.impl.MatcherSplitter.split(MatcherSplitter.java:149)
                             at org.apache.james.mailetcontainer.impl.MailetProcessorImpl.lambda$executeProcessingStep$3(MailetProcessorImpl.java:158)
   ```


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