Fix spotbugs bugs

auth/src/main/java/software/amazon/awssdk/auth/credentials/ContainerCredentialsRetryPolicy.java

@@ -38,11 +38,7 @@ public boolean shouldRetry(int retriesAttempted, ResourcesEndpointRetryParameter
             return true;
         }
 
-        if (retryParams.getException() != null && retryParams.getException() instanceof IOException) {
-            return true;
-        }
-
-        return false;
+        return retryParams.getException() instanceof IOException;
     }
 
 }

auth/src/main/java/software/amazon/awssdk/auth/credentials/DefaultCredentialsProvider.java

@@ -35,7 +35,7 @@
  * @see ContainerCredentialsProvider
  * @see InstanceProfileCredentialsProvider
  */
-public class DefaultCredentialsProvider implements AwsCredentialsProvider, SdkAutoCloseable {
+public final class DefaultCredentialsProvider implements AwsCredentialsProvider, SdkAutoCloseable {
 
     private static final DefaultCredentialsProvider DEFAULT_CREDENTIALS_PROVIDER = new DefaultCredentialsProvider(builder());
 

auth/src/main/java/software/amazon/awssdk/auth/credentials/SystemPropertyCredentialsProvider.java

@@ -23,7 +23,7 @@
  * {@link AwsCredentialsProvider} implementation that loads credentials from the aws.accessKeyId, aws.secretAccessKey and
  * aws.sessionToken system properties.
  */
-public class SystemPropertyCredentialsProvider extends SystemSettingsCredentialsProvider {
+public final class SystemPropertyCredentialsProvider extends SystemSettingsCredentialsProvider {
 
     private SystemPropertyCredentialsProvider() {
     }

auth/src/main/java/software/amazon/awssdk/auth/signer/internal/Aws4SignerRequestParams.java

@@ -27,7 +27,7 @@ public final class Aws4SignerRequestParams {
     /**
      * The signing algorithm to be used for computing the signature.
      */
-    private final String signingAlgorithm = SignerConstant.AWS4_SIGNING_ALGORITHM;
+    private static final String SIGNING_ALGORITHM = SignerConstant.AWS4_SIGNING_ALGORITHM;
 
     /**
      * The datetime in milliseconds for which the signature needs to be
@@ -144,6 +144,6 @@ public String getFormattedSigningDate() {
      * Returns the signing algorithm used for computing the signature.
      */
     public String getSigningAlgorithm() {
-        return signingAlgorithm;
+        return SIGNING_ALGORITHM;
     }
 }

auth/src/main/java/software/amazon/awssdk/auth/signer/params/AwsS3V4SignerParams.java

@@ -92,6 +92,7 @@ public Builder enablePayloadSigning(Boolean enablePayloadSigning) {
             return this;
         }
 
+        @Override
         public AwsS3V4SignerParams build() {
             return new AwsS3V4SignerParams(this);
         }

aws-core/src/main/java/software/amazon/awssdk/awscore/config/options/AwsClientOptionValidation.java

@@ -22,7 +22,7 @@
  * A set of static methods used to validate that a {@link SdkClientConfiguration} contains all of
  * the values required for the AWS client handlers to function.
  */
-public class AwsClientOptionValidation extends SdkClientOptionValidation {
+public final class AwsClientOptionValidation extends SdkClientOptionValidation {
     private AwsClientOptionValidation() {}
 
     public static void validateAsyncClientOptions(SdkClientConfiguration c) {

aws-core/src/main/java/software/amazon/awssdk/awscore/http/response/StaxResponseHandler.java

@@ -82,6 +82,7 @@ public StaxResponseHandler(Unmarshaller<T, StaxUnmarshallerContext> responseUnma
     /**
      * @see HttpResponseHandler#handle(HttpResponse, ExecutionAttributes)
      */
+    @Override
     public T handle(HttpResponse response, ExecutionAttributes executionAttributes) throws Exception {
         SdkStandardLogger.REQUEST_LOGGER.trace(() -> "Parsing service response XML.");
         InputStream content = response.getContent();
@@ -136,6 +137,7 @@ protected void registerAdditionalMetadataExpressions(StaxUnmarshallerContext unm
      *
      * @see HttpResponseHandler#needsConnectionLeftOpen()
      */
+    @Override
     public boolean needsConnectionLeftOpen() {
         return false;
     }

aws-core/src/main/java/software/amazon/awssdk/awscore/protocol/json/AwsJsonProtocolMetadata.java

@@ -21,7 +21,7 @@
  * Provides additional metadata about AWS Json protocol.
  */
 @SdkProtectedApi
-public class AwsJsonProtocolMetadata {
+public final class AwsJsonProtocolMetadata {
 
     private final AwsJsonProtocol protocol;
     private final String protocolVersion;

aws-core/src/main/java/software/amazon/awssdk/awscore/protocol/xml/SimpleTypeStaxUnmarshallers.java

@@ -29,7 +29,7 @@
 /**
  * Collection of StAX unmarshallers for simple data types.
  */
-public class SimpleTypeStaxUnmarshallers {
+public final class SimpleTypeStaxUnmarshallers {
     /** Shared logger. */
     private static Logger log = LoggerFactory.getLogger(SimpleTypeStaxUnmarshallers.class);
 

aws-core/src/main/java/software/amazon/awssdk/awscore/retry/AwsRetryPolicy.java

@@ -19,6 +19,7 @@
 import software.amazon.awssdk.awscore.internal.AwsErrorCode;
 import software.amazon.awssdk.core.retry.RetryPolicy;
 import software.amazon.awssdk.core.retry.conditions.RetryCondition;
+import software.amazon.awssdk.core.retry.conditions.SdkRetryCondition;
 
 /**
  * Retry Policy used by clients when communicating with AWS services.
@@ -27,7 +28,7 @@
 public final class AwsRetryPolicy {
 
     public static final RetryCondition AWS_DEFAULT_RETRY_CONDITION =
-        RetryCondition.DEFAULT.or(new RetryOnErrorCodeCondition(AwsErrorCode.RETRYABLE_ERROR_CODES));
+        SdkRetryCondition.DEFAULT.or(new RetryOnErrorCodeCondition(AwsErrorCode.RETRYABLE_ERROR_CODES));
 
     public static final RetryPolicy DEFAULT =
         RetryPolicy.DEFAULT.toBuilder()

build-tools/src/main/resources/software/amazon/awssdk/spotbugs-suppressions.xml

@@ -67,4 +67,40 @@
         <Method name="onComplete" />
         <Bug pattern="NP_NONNULL_PARAM_VIOLATION" />
     </Match>
+
+    <!-- False positive -->
+    <Match>
+        <Class name="software.amazon.awssdk.core.ResponseBytes" />
+        <Bug pattern="EI_EXPOSE_REP2" />
+    </Match>
+
+    <!-- False positive Unconfirmed cast-->
+    <Match>
+        <Or>
+            <Class name="software.amazon.awssdk.core.client.BaseAsyncClientHandler$InterceptorCallingHttpResponseHandler" />
+            <Class name="software.amazon.awssdk.core.client.BaseAsyncClientHandler$UnmarshallingSdkHttpResponseHandler" />
+            <Class name="software.amazon.awssdk.core.internal.http.async.SyncResponseHandlerAdapter" />
+        </Or>
+        <Bug pattern="BC_UNCONFIRMED_CAST" />
+    </Match>
+
+    <Match>
+        <Or>
+            <Class name="software.amazon.awssdk.awscore.protocol.xml.StandardErrorUnmarshaller" />
+            <Class name="software.amazon.awssdk.awscore.protocol.xml.LegacyErrorUnmarshaller" />
+        </Or>
+        <Bug pattern="BC_UNCONFIRMED_CAST_OF_RETURN_VALUE" />
+    </Match>
+
+    <!-- Currently they look the same and we will revisit this when we add APIG -->
+    <Match>
+        <Or>
+            <Class name="software.amazon.awssdk.core.client.SdkAsyncClientHandler" />
+            <Class name="software.amazon.awssdk.core.client.SdkSyncClientHandler" />
+            <Class name="software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler" />
+            <Class name="software.amazon.awssdk.awscore.client.handler.AwsAsyncClientHandler" />
+        </Or>
+        <Bug pattern="RI_REDUNDANT_INTERFACES" />
+    </Match>
+
 </FindBugsFilter>

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

@@ -40,7 +40,6 @@
 class ModelBuilderSpecs {
     private final IntermediateModel intermediateModel;
     private final ShapeModel shapeModel;
-    private final ShapeModelSpec shapeModelSpec;
     private final TypeProvider typeProvider;
     private final PoetExtensions poetExtensions;
     private final AccessorsFactory accessorsFactory;
@@ -51,7 +50,6 @@ class ModelBuilderSpecs {
                       TypeProvider typeProvider) {
         this.intermediateModel = intermediateModel;
         this.shapeModel = shapeModel;
-        this.shapeModelSpec = shapeModelSpec;
         this.typeProvider = typeProvider;
         this.poetExtensions = new PoetExtensions(this.intermediateModel);
         this.accessorsFactory = new AccessorsFactory(this.shapeModel, this.intermediateModel, this.typeProvider, poetExtensions);

core/src/main/java/software/amazon/awssdk/core/RequestOverrideConfiguration.java

@@ -15,7 +15,6 @@
 
 package software.amazon.awssdk.core;
 
-import java.time.Duration;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -24,7 +23,6 @@
 import java.util.Optional;
 import java.util.TreeMap;
 import java.util.function.Consumer;
-
 import software.amazon.awssdk.annotations.Immutable;
 
 /**
@@ -196,8 +194,6 @@ protected abstract static class BuilderImpl<B extends Builder> implements Builde
 
         private Map<String, List<String>> rawQueryParameters;
 
-        private Duration requestExecutionTimeout;
-
         private List<ApiName> apiNames;
 
         protected BuilderImpl() {

core/src/main/java/software/amazon/awssdk/core/SdkStandardLogger.java

@@ -23,7 +23,7 @@
  * just these loggers to get the type of that they want instead of having to enable all logging.
  */
 @SdkInternalApi
-public class SdkStandardLogger {
+public final class SdkStandardLogger {
     /**
      * Logger providing detailed information on requests/responses. Users can enable this logger to get access to AWS request IDs
      * for responses, individual requests and parameters sent to AWS, etc.

core/src/main/java/software/amazon/awssdk/core/client/BaseAsyncClientHandler.java

@@ -170,7 +170,7 @@ private interface ResponseHandlerFactory<ReturnT> extends
                                                       Function<HttpResponseAdapter, SdkHttpResponseHandler<ReturnT>> {
     }
 
-    private static class InterceptorCallingHttpResponseHandler<T> implements SdkHttpResponseHandler<T> {
+    private static final class InterceptorCallingHttpResponseHandler<T> implements SdkHttpResponseHandler<T> {
         private final SdkHttpResponseHandler<T> delegate;
         private final ExecutionContext context;
 
@@ -279,7 +279,7 @@ public ReturnT complete() {
      * provide the request content in a non-blocking manner. This adapts that interface to the
      * {@link SdkHttpRequestProvider} which the HTTP client SPI expects.
      */
-    private static class SdkHttpRequestProviderAdapter implements SdkHttpRequestProvider {
+    private static final class SdkHttpRequestProviderAdapter implements SdkHttpRequestProvider {
 
         private final AsyncRequestBody asyncRequestBody;
 

core/src/main/java/software/amazon/awssdk/core/config/ClientAsyncConfiguration.java

@@ -94,11 +94,6 @@ public Builder advancedOptions(Map<SdkAdvancedAsyncClientOption<?>, ?> advancedO
             return this;
         }
 
-        private Builder advancedOptions(AttributeMap.Builder attributeMap) {
-            this.advancedOptions = attributeMap;
-            return this;
-        }
-
         public void setAdvancedOptions(Map<SdkAdvancedAsyncClientOption<?>, Object> advancedOptions) {
             advancedOptions(advancedOptions);
         }

core/src/main/java/software/amazon/awssdk/core/http/ExecutionContext.java

@@ -32,7 +32,7 @@
  */
 @NotThreadSafe
 @SdkProtectedApi
-public class ExecutionContext implements ToCopyableBuilder<ExecutionContext.Builder, ExecutionContext> {
+public final class ExecutionContext implements ToCopyableBuilder<ExecutionContext.Builder, ExecutionContext> {
     private final Signer signer;
     private InterceptorContext interceptorContext;
     private final ExecutionInterceptorChain interceptorChain;

core/src/main/java/software/amazon/awssdk/core/internal/http/HttpClientDependencies.java

@@ -32,7 +32,7 @@
  * RequestPipeline} implementations by {@link RequestPipelineBuilder}.
  */
 @SdkInternalApi
-public class HttpClientDependencies implements SdkAutoCloseable {
+public final class HttpClientDependencies implements SdkAutoCloseable {
     private final SdkClientConfiguration clientConfiguration;
     private final CapacityManager capacityManager;
     private final ClientExecutionTimer clientExecutionTimer;
@@ -87,7 +87,7 @@ public void updateTimeOffset(int timeOffset) {
     }
 
     @Override
-    public final void close() {
+    public void close() {
         this.clientConfiguration.close();
         this.clientExecutionTimer.close();
     }

core/src/main/java/software/amazon/awssdk/core/internal/http/pipeline/RequestPipelineBuilder.java

@@ -25,7 +25,6 @@
 import software.amazon.awssdk.annotations.Immutable;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.core.internal.http.HttpClientDependencies;
-import software.amazon.awssdk.core.internal.http.HttpClientDependencies;
 import software.amazon.awssdk.core.internal.http.RequestExecutionContext;
 
 /**
@@ -36,11 +35,11 @@
  */
 @Immutable
 @SdkInternalApi
-public class RequestPipelineBuilder<InputT, OutputT> {
+public final class RequestPipelineBuilder<InputT, OutputT> {
 
     private final Function<HttpClientDependencies, RequestPipeline<InputT, OutputT>> pipelineFactory;
 
-    RequestPipelineBuilder(Function<HttpClientDependencies, RequestPipeline<InputT, OutputT>> pipelineFactory) {
+    private RequestPipelineBuilder(Function<HttpClientDependencies, RequestPipeline<InputT, OutputT>> pipelineFactory) {
         this.pipelineFactory = pipelineFactory;
     }
 

core/src/main/java/software/amazon/awssdk/core/internal/http/pipeline/stages/AsyncRetryableStage.java

@@ -44,7 +44,8 @@
 /**
  * Wrapper around the pipeline for a single request to provide retry functionality.
  */
-public class AsyncRetryableStage<OutputT> implements RequestPipeline<SdkHttpFullRequest, CompletableFuture<Response<OutputT>>> {
+public final class AsyncRetryableStage<OutputT> implements RequestPipeline<SdkHttpFullRequest,
+    CompletableFuture<Response<OutputT>>> {
 
     private static final Logger log = LoggerFactory.getLogger(AsyncRetryableStage.class);
 

core/src/main/java/software/amazon/awssdk/core/internal/http/pipeline/stages/ClientExecutionTimedStage.java

@@ -40,13 +40,11 @@ public class ClientExecutionTimedStage<OutputT> implements RequestToResponsePipe
 
     private final RequestPipeline<SdkHttpFullRequest, Response<OutputT>> wrapped;
     private final ClientExecutionTimer clientExecutionTimer;
-    private final SdkClientConfiguration clientConfig;
 
     public ClientExecutionTimedStage(HttpClientDependencies dependencies,
                                      RequestPipeline<SdkHttpFullRequest, Response<OutputT>> wrapped) {
         this.wrapped = wrapped;
         this.clientExecutionTimer = dependencies.clientExecutionTimer();
-        this.clientConfig = dependencies.clientConfiguration();
     }
 
     @Override

core/src/main/java/software/amazon/awssdk/core/internal/http/pipeline/stages/MakeAsyncHttpRequestStage.java

@@ -47,7 +47,7 @@
 /**
  * Delegate to the HTTP implementation to make an HTTP request and receive the response.
  */
-public class MakeAsyncHttpRequestStage<OutputT>
+public final class MakeAsyncHttpRequestStage<OutputT>
     implements RequestPipeline<SdkHttpFullRequest, CompletableFuture<Response<OutputT>>> {
 
     private static final Logger log = LoggerFactory.getLogger(MakeAsyncHttpRequestStage.class);

core/src/main/java/software/amazon/awssdk/core/internal/http/pipeline/stages/RetryableStage.java

@@ -45,7 +45,7 @@
 /**
  * Wrapper around the pipeline for a single request to provide retry functionality.
  */
-public class RetryableStage<OutputT> implements RequestToResponsePipeline<OutputT> {
+public final class RetryableStage<OutputT> implements RequestToResponsePipeline<OutputT> {
 
     private static final Logger log = LoggerFactory.getLogger(RetryableStage.class);
 

core/src/main/java/software/amazon/awssdk/core/internal/http/timers/client/NoOpClientExecutionAbortTrackerTask.java

@@ -21,7 +21,7 @@
  * Dummy implementation of {@link ClientExecutionAbortTrackerTask} used when the timer is disabled
  * for a request
  */
-public class NoOpClientExecutionAbortTrackerTask implements ClientExecutionAbortTrackerTask {
+public final class NoOpClientExecutionAbortTrackerTask implements ClientExecutionAbortTrackerTask {
 
     public static final NoOpClientExecutionAbortTrackerTask INSTANCE = new NoOpClientExecutionAbortTrackerTask();
 

core/src/main/java/software/amazon/awssdk/core/protocol/MarshallingInfo.java

@@ -24,7 +24,7 @@
  * and additional directives about how to transform it (i.e. is it binary data, should it be auto generated, etc).
  */
 @SdkProtectedApi
-public class MarshallingInfo<T> {
+public final class MarshallingInfo<T> {
 
     private final MarshallingType<T> marshallingType;
     private final String marshallLocationName;

core/src/main/java/software/amazon/awssdk/core/protocol/OperationInfo.java

@@ -23,7 +23,7 @@
  * Static information about an API operation used to marshall it correctly.
  */
 @SdkProtectedApi
-public class OperationInfo {
+public final class OperationInfo {
 
     private final String requestUri;
     private final HttpMethodName httpMethodName;

core/src/main/java/software/amazon/awssdk/core/protocol/json/internal/JsonMarshallerContext.java

@@ -25,7 +25,7 @@
  * Dependencies needed by implementations of {@link JsonMarshaller}.
  */
 @SdkInternalApi
-public class JsonMarshallerContext {
+public final class JsonMarshallerContext {
 
     private final StructuredJsonGenerator jsonGenerator;
     private final JsonProtocolMarshaller protocolHandler;

core/src/main/java/software/amazon/awssdk/core/protocol/json/internal/MarshallerRegistry.java

@@ -26,7 +26,7 @@
 import software.amazon.awssdk.core.protocol.StructuredPojo;
 
 @SdkInternalApi
-public class MarshallerRegistry {
+public final class MarshallerRegistry {
 
     private final Map<MarshallLocation, Map<MarshallingType, JsonMarshaller<?>>> marshallers;
     private final Set<MarshallingType<?>> marshallingTypes;