Modify SDK to not fail on invalid Expires header

codegen/src/main/java/software/amazon/awssdk/codegen/customization/processors/ShapeModifiersProcessor.java

@@ -160,6 +160,11 @@ private void postprocessModifyMemberProperty(ShapeModel shapeModel, String membe
                                                                     .getUnmarshallLocationName());
         }
 
+        if (modifyModel.isIgnoreDataTypeConversionFailures()) {
+            MemberModel memberModel = shapeModel.findMemberModelByC2jName(memberName);
+            memberModel.ignoreDataTypeConversionFailures(true);
+        }
+
     }
 
     /**

codegen/src/main/java/software/amazon/awssdk/codegen/model/config/customization/ModifyModelShapeModifier.java

@@ -59,6 +59,11 @@ public class ModifyModelShapeModifier {
 
     private String unmarshallLocationName;
 
+    /**
+     * Indicates whether data type conversion failures are to be ignored
+     */
+    private boolean ignoreDataTypeConversionFailures;
+
     public String getDeprecatedMessage() {
         return deprecatedMessage;
     }
@@ -130,4 +135,12 @@ public String getEmitAsType() {
     public void setEmitAsType(String emitAsType) {
         this.emitAsType = emitAsType;
     }
+
+    public void setIgnoreDataTypeConversionFailures(boolean ignoreDataTypeConversionFailures) {
+        this.ignoreDataTypeConversionFailures = ignoreDataTypeConversionFailures;
+    }
+
+    public boolean isIgnoreDataTypeConversionFailures() {
+        return ignoreDataTypeConversionFailures;
+    }
 }

codegen/src/main/java/software/amazon/awssdk/codegen/model/intermediate/MemberModel.java

@@ -115,6 +115,8 @@ public class MemberModel extends DocumentationModel {
 
     private ContextParam contextParam;
 
+    private boolean ignoreDataTypeConversionFailures;
+
     public String getName() {
         return name;
     }
@@ -775,4 +777,12 @@ public ContextParam getContextParam() {
     public void setContextParam(ContextParam contextParam) {
         this.contextParam = contextParam;
     }
+
+    public void ignoreDataTypeConversionFailures(boolean ignoreDataTypeConversionFailures) {
+        this.ignoreDataTypeConversionFailures = ignoreDataTypeConversionFailures;
+    }
+
+    public boolean ignoreDataTypeConversionFailures() {
+        return ignoreDataTypeConversionFailures;
+    }
 }

codegen/src/main/java/software/amazon/awssdk/codegen/poet/model/ShapeModelSpec.java

@@ -39,6 +39,7 @@
 import software.amazon.awssdk.core.SdkField;
 import software.amazon.awssdk.core.protocol.MarshallLocation;
 import software.amazon.awssdk.core.protocol.MarshallingType;
+import software.amazon.awssdk.core.traits.DataTypeConversionFailureHandlingTrait;
 import software.amazon.awssdk.core.traits.DefaultValueTrait;
 import software.amazon.awssdk.core.traits.JsonValueTrait;
 import software.amazon.awssdk.core.traits.ListTrait;
@@ -186,6 +187,10 @@ private CodeBlock traits(MemberModel m) {
         if (m.isXmlAttribute()) {
             traits.add(createXmlAttributeTrait());
         }
+
+        if (m.ignoreDataTypeConversionFailures()) {
+            traits.add(createDataTypeConversionFailureHandlingTrait());
+        }
         if (customizationConfig.isRequiredTraitValidationEnabled() && m.isRequired()) {
             traits.add(createRequiredTrait());
         }
@@ -206,6 +211,12 @@ private boolean attachPayloadTraitToMember(MemberModel m) {
                                   .equals(m.getC2jName());
     }
 
+    private CodeBlock createDataTypeConversionFailureHandlingTrait() {
+        return CodeBlock.builder()
+                        .add("new $T()", ClassName.get(DataTypeConversionFailureHandlingTrait.class))
+                        .build();
+    }
+
     private CodeBlock createTimestampFormatTrait(MemberModel m) {
         TimestampFormatTrait.Format format = TimestampFormatTrait.Format.fromString(m.getTimestampFormat());
         ClassName traitClass = ClassName.get(TimestampFormatTrait.class);

codegen/src/test/resources/software/amazon/awssdk/codegen/poet/model/customization.config

@@ -26,6 +26,11 @@
                         "deprecated": true,
                         "deprecatedMessage": "This field is modified as deprecated."
                     }
+                },
+                {
+                    "MemberIgnoreDataTypeFailureHandling": {
+                        "ignoreDataTypeConversionFailures": "true"
+                    }
                 }
             ]
         },

codegen/src/test/resources/software/amazon/awssdk/codegen/poet/model/operationwithdeprecatedmemberrequest.java

@@ -14,6 +14,7 @@
 import software.amazon.awssdk.core.SdkPojo;
 import software.amazon.awssdk.core.protocol.MarshallLocation;
 import software.amazon.awssdk.core.protocol.MarshallingType;
+import software.amazon.awssdk.core.traits.DataTypeConversionFailureHandlingTrait;
 import software.amazon.awssdk.core.traits.LocationTrait;
 import software.amazon.awssdk.utils.ToString;
 import software.amazon.awssdk.utils.builder.CopyableBuilder;
@@ -45,20 +46,33 @@ public final class OperationWithDeprecatedMemberRequest extends JsonProtocolTest
                                                                               .traits(LocationTrait.builder().location(MarshallLocation.PAYLOAD).locationName("UndeprecatedMember").build())
                                                                               .build();
 
+    private static final SdkField<String> MEMBER_IGNORE_DATA_TYPE_FAILURE_HANDLING_FIELD = SdkField
+        .<String> builder(MarshallingType.STRING)
+        .memberName("MemberIgnoreDataTypeFailureHandling")
+        .getter(getter(OperationWithDeprecatedMemberRequest::memberIgnoreDataTypeFailureHandling))
+        .setter(setter(Builder::memberIgnoreDataTypeFailureHandling))
+        .traits(LocationTrait.builder().location(MarshallLocation.PAYLOAD)
+                             .locationName("MemberIgnoreDataTypeFailureHandling").build(), new DataTypeConversionFailureHandlingTrait())
+        .build();
+
     private static final List<SdkField<?>> SDK_FIELDS = Collections.unmodifiableList(Arrays.asList(
-        MEMBER_MODELED_AS_DEPRECATED_FIELD, MEMBER_MODIFIED_AS_DEPRECATED_FIELD, UNDEPRECATED_MEMBER_FIELD));
+        MEMBER_MODELED_AS_DEPRECATED_FIELD, MEMBER_MODIFIED_AS_DEPRECATED_FIELD, UNDEPRECATED_MEMBER_FIELD,
+        MEMBER_IGNORE_DATA_TYPE_FAILURE_HANDLING_FIELD));
 
     private final String memberModeledAsDeprecated;
 
     private final String memberModifiedAsDeprecated;
 
     private final String undeprecatedMember;
 
+    private final String memberIgnoreDataTypeFailureHandling;
+
     private OperationWithDeprecatedMemberRequest(BuilderImpl builder) {
         super(builder);
         this.memberModeledAsDeprecated = builder.memberModeledAsDeprecated;
         this.memberModifiedAsDeprecated = builder.memberModifiedAsDeprecated;
         this.undeprecatedMember = builder.undeprecatedMember;
+        this.memberIgnoreDataTypeFailureHandling = builder.memberIgnoreDataTypeFailureHandling;
     }
 
     /**
@@ -92,6 +106,15 @@ public final String undeprecatedMember() {
         return undeprecatedMember;
     }
 
+    /**
+     * Returns the value of the MemberIgnoreDataTypeFailureHandling property for this object.
+     *
+     * @return The value of the MemberIgnoreDataTypeFailureHandling property for this object.
+     */
+    public final String memberIgnoreDataTypeFailureHandling() {
+        return memberIgnoreDataTypeFailureHandling;
+    }
+
     @Override
     public Builder toBuilder() {
         return new BuilderImpl(this);
@@ -112,6 +135,7 @@ public final int hashCode() {
         hashCode = 31 * hashCode + Objects.hashCode(memberModeledAsDeprecated());
         hashCode = 31 * hashCode + Objects.hashCode(memberModifiedAsDeprecated());
         hashCode = 31 * hashCode + Objects.hashCode(undeprecatedMember());
+        hashCode = 31 * hashCode + Objects.hashCode(memberIgnoreDataTypeFailureHandling());
         return hashCode;
     }
 
@@ -134,7 +158,8 @@ public final boolean equalsBySdkFields(Object obj) {
         OperationWithDeprecatedMemberRequest other = (OperationWithDeprecatedMemberRequest) obj;
         return Objects.equals(memberModeledAsDeprecated(), other.memberModeledAsDeprecated())
                && Objects.equals(memberModifiedAsDeprecated(), other.memberModifiedAsDeprecated())
-               && Objects.equals(undeprecatedMember(), other.undeprecatedMember());
+               && Objects.equals(undeprecatedMember(), other.undeprecatedMember())
+               && Objects.equals(memberIgnoreDataTypeFailureHandling(), other.memberIgnoreDataTypeFailureHandling());
     }
 
     /**
@@ -146,7 +171,7 @@ public final String toString() {
         return ToString.builder("OperationWithDeprecatedMemberRequest")
                        .add("MemberModeledAsDeprecated", memberModeledAsDeprecated())
                        .add("MemberModifiedAsDeprecated", memberModifiedAsDeprecated()).add("UndeprecatedMember", undeprecatedMember())
-                       .build();
+                       .add("MemberIgnoreDataTypeFailureHandling", memberIgnoreDataTypeFailureHandling()).build();
     }
 
     public final <T> Optional<T> getValueForField(String fieldName, Class<T> clazz) {
@@ -157,6 +182,8 @@ public final <T> Optional<T> getValueForField(String fieldName, Class<T> clazz)
                 return Optional.ofNullable(clazz.cast(memberModifiedAsDeprecated()));
             case "UndeprecatedMember":
                 return Optional.ofNullable(clazz.cast(undeprecatedMember()));
+            case "MemberIgnoreDataTypeFailureHandling":
+                return Optional.ofNullable(clazz.cast(memberIgnoreDataTypeFailureHandling()));
             default:
                 return Optional.empty();
         }
@@ -208,6 +235,15 @@ public interface Builder extends JsonProtocolTestsRequest.Builder, SdkPojo,
          */
         Builder undeprecatedMember(String undeprecatedMember);
 
+        /**
+         * Sets the value of the MemberIgnoreDataTypeFailureHandling property for this object.
+         *
+         * @param memberIgnoreDataTypeFailureHandling
+         *        The new value for the MemberIgnoreDataTypeFailureHandling property for this object.
+         * @return Returns a reference to this object so that method calls can be chained together.
+         */
+        Builder memberIgnoreDataTypeFailureHandling(String memberIgnoreDataTypeFailureHandling);
+
         @Override
         Builder overrideConfiguration(AwsRequestOverrideConfiguration overrideConfiguration);
 
@@ -222,6 +258,8 @@ static final class BuilderImpl extends JsonProtocolTestsRequest.BuilderImpl impl
 
         private String undeprecatedMember;
 
+        private String memberIgnoreDataTypeFailureHandling;
+
         private BuilderImpl() {
         }
 
@@ -230,6 +268,7 @@ private BuilderImpl(OperationWithDeprecatedMemberRequest model) {
             memberModeledAsDeprecated(model.memberModeledAsDeprecated);
             memberModifiedAsDeprecated(model.memberModifiedAsDeprecated);
             undeprecatedMember(model.undeprecatedMember);
+            memberIgnoreDataTypeFailureHandling(model.memberIgnoreDataTypeFailureHandling);
         }
 
         @Deprecated
@@ -280,6 +319,20 @@ public final Builder undeprecatedMember(String undeprecatedMember) {
             return this;
         }
 
+        public final String getMemberIgnoreDataTypeFailureHandling() {
+            return memberIgnoreDataTypeFailureHandling;
+        }
+
+        public final void setMemberIgnoreDataTypeFailureHandling(String memberIgnoreDataTypeFailureHandling) {
+            this.memberIgnoreDataTypeFailureHandling = memberIgnoreDataTypeFailureHandling;
+        }
+
+        @Override
+        public final Builder memberIgnoreDataTypeFailureHandling(String memberIgnoreDataTypeFailureHandling) {
+            this.memberIgnoreDataTypeFailureHandling = memberIgnoreDataTypeFailureHandling;
+            return this;
+        }
+
         @Override
         public Builder overrideConfiguration(AwsRequestOverrideConfiguration overrideConfiguration) {
             super.overrideConfiguration(overrideConfiguration);

codegen/src/test/resources/software/amazon/awssdk/codegen/poet/model/service-2.json

@@ -247,7 +247,8 @@
           "deprecatedMessage": "This field is modeled as deprecated."
         },
         "MemberModifiedAsDeprecated":{"shape": "String"},
-        "UndeprecatedMember": {"shape": "String"}
+        "UndeprecatedMember": {"shape": "String"},
+        "MemberIgnoreDataTypeFailureHandling":{"shape": "String"}
       }
     },
     "OperationWithDeprecatedMemberResponse":{

core/protocols/aws-xml-protocol/src/main/java/software/amazon/awssdk/protocols/xml/internal/unmarshall/HeaderUnmarshaller.java

@@ -26,6 +26,7 @@
 import software.amazon.awssdk.core.SdkField;
 import software.amazon.awssdk.protocols.core.StringToValueConverter;
 import software.amazon.awssdk.protocols.query.unmarshall.XmlElement;
+import software.amazon.awssdk.utils.Logger;
 
 @SdkInternalApi
 public final class HeaderUnmarshaller {
@@ -60,6 +61,7 @@ private HeaderUnmarshaller() {
     }
 
     private static class SimpleHeaderUnmarshaller<T> implements XmlUnmarshaller<T> {
+        private static final Logger log = Logger.loggerFor(SimpleHeaderUnmarshaller.class);
 
         private final StringToValueConverter.StringToValue<T> stringToValue;
 
@@ -69,9 +71,17 @@ private SimpleHeaderUnmarshaller(StringToValueConverter.StringToValue<T> stringT
 
         @Override
         public T unmarshall(XmlUnmarshallerContext context, List<XmlElement> content, SdkField<T> field) {
-            return context.response().firstMatchingHeader(field.locationName())
-                          .map(s -> stringToValue.convert(s, field))
-                          .orElse(null);
+            try {
+                return context.response().firstMatchingHeader(field.locationName())
+                              .map(s -> stringToValue.convert(s, field))
+                              .orElse(null);
+            } catch (RuntimeException e) {
+                log.warn(() -> "Exception found while parsing response header " , e);
+                if (field.ignoreDataTypeConversionFailures()) {
+                    return null;
+                }
+                throw e;
+            }
         }
     }
 }

core/sdk-core/src/main/java/software/amazon/awssdk/core/SdkField.java

@@ -25,6 +25,7 @@
 import software.amazon.awssdk.annotations.SdkProtectedApi;
 import software.amazon.awssdk.core.protocol.MarshallLocation;
 import software.amazon.awssdk.core.protocol.MarshallingType;
+import software.amazon.awssdk.core.traits.DataTypeConversionFailureHandlingTrait;
 import software.amazon.awssdk.core.traits.DefaultValueTrait;
 import software.amazon.awssdk.core.traits.LocationTrait;
 import software.amazon.awssdk.core.traits.Trait;
@@ -86,6 +87,16 @@ public String locationName() {
         return locationName;
     }
 
+    /**
+     * @return whether data-type conversion errors are to be ignored
+     */
+    public boolean ignoreDataTypeConversionFailures() {
+        DataTypeConversionFailureHandlingTrait dataTypeConversionFailureHandlingTrait =
+            getTrait(DataTypeConversionFailureHandlingTrait.class);
+
+        return dataTypeConversionFailureHandlingTrait != null;
+    }
+
     /**
      * @return The location name to use when unmarshalling. This is only needed for AWS/Query or EC2 services. All
      * other services should use {@link #locationName} for both marshalling and unmarshalling.

core/sdk-core/src/main/java/software/amazon/awssdk/core/traits/DataTypeConversionFailureHandlingTrait.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file 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.
+ */
+
+package software.amazon.awssdk.core.traits;
+
+import software.amazon.awssdk.annotations.SdkProtectedApi;
+
+@SdkProtectedApi
+public class DataTypeConversionFailureHandlingTrait implements Trait {
+}