software.amazon.awssdk.core.http.ExecutionContext Maven / Gradle / Ivy

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A single bundled dependency that includes all service and dependent JARs with third-party libraries relocated to different namespaces.
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/*
 * Copyright 2010-2018 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.http;

import software.amazon.awssdk.annotations.NotThreadSafe;
import software.amazon.awssdk.annotations.ReviewBeforeRelease;
import software.amazon.awssdk.annotations.SdkProtectedApi;
import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
import software.amazon.awssdk.core.internal.interceptor.ExecutionInterceptorChain;
import software.amazon.awssdk.core.internal.interceptor.InterceptorContext;
import software.amazon.awssdk.core.signer.Signer;
import software.amazon.awssdk.utils.Validate;
import software.amazon.awssdk.utils.builder.CopyableBuilder;
import software.amazon.awssdk.utils.builder.ToCopyableBuilder;

/**
 * Warning: This class should only be accessed by a single thread and be used throughout a single request lifecycle.
 */
@NotThreadSafe
@SdkProtectedApi
public final class ExecutionContext implements ToCopyableBuilder {
    private final Signer signer;
    private InterceptorContext interceptorContext;
    private final ExecutionInterceptorChain interceptorChain;
    private final ExecutionAttributes executionAttributes;

    private ExecutionContext(final Builder builder) {
        this.signer = Validate.paramNotNull(builder.signer, "signer");
        this.interceptorContext = Validate.paramNotNull(builder.interceptorContext, "interceptorContext");
        this.interceptorChain = Validate.paramNotNull(builder.interceptorChain, "interceptorChain");
        this.executionAttributes = Validate.paramNotNull(builder.executionAttributes, "executionAttributes");
    }

    public static ExecutionContext.Builder builder() {
        return new ExecutionContext.Builder();
    }

    public InterceptorContext interceptorContext() {
        return interceptorContext;
    }

    @ReviewBeforeRelease("We should switch to fully immutable execution contexts. Currently, we mutate it for the interceptor "
                         + "context, credential providers, etc.")
    public ExecutionContext interceptorContext(InterceptorContext interceptorContext) {
        this.interceptorContext = interceptorContext;
        return this;
    }

    public ExecutionInterceptorChain interceptorChain() {
        return interceptorChain;
    }

    public ExecutionAttributes executionAttributes() {
        return executionAttributes;
    }

    public Signer signer() {
        return signer;
    }

    @Override
    public Builder toBuilder() {
        return new Builder(this);
    }

    public static class Builder implements CopyableBuilder {
        private InterceptorContext interceptorContext;
        private ExecutionInterceptorChain interceptorChain;
        private ExecutionAttributes executionAttributes;
        private Signer signer;

        private Builder() {
        }

        public Builder(ExecutionContext executionContext) {
            this.signer = executionContext.signer;
            this.interceptorContext = executionContext.interceptorContext;
            this.interceptorChain = executionContext.interceptorChain;
            this.executionAttributes = executionContext.executionAttributes;
        }

        public Builder interceptorContext(InterceptorContext interceptorContext) {
            this.interceptorContext = interceptorContext;
            return this;
        }

        public Builder interceptorChain(ExecutionInterceptorChain interceptorChain) {
            this.interceptorChain = interceptorChain;
            return this;
        }

        public Builder executionAttributes(ExecutionAttributes executionAttributes) {
            this.executionAttributes = executionAttributes;
            return this;
        }

        public Builder signer(Signer signer) {
            this.signer = signer;
            return this;
        }

        public ExecutionContext build() {
            return new ExecutionContext(this);
        }

    }

}