// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.handler.test;

import com.google.common.annotations.Beta;
import com.yahoo.container.jdisc.HttpRequest;

/**
 * A service handler that is able to map a request to a key and retrieve a value given a key.
 *
 * @author lulf
 * @since 5.1.21
 */
@Beta
public interface MockServiceHandler {
    /**
     * Create a custom Key given a http request. This will be called for each request, and allows a handler
     * to customize its key format.
     * @param request The client http request.
     * @return a {@link Key} used to query for the value.
     */
    public Key createKey(HttpRequest request);

    /**
     * Lookup a {@link Value} for a {@link Key}. Returns null if the key is not found.
     *
     * @param key The {@link Key} to look up.
     * @return A {@link Value} used as response.
     */
    public Value get(Key key);

    public final class Value {
        public final int returnCode;
        public final byte[] data;
        public final String contentType;

        public Value(int returnCode, byte[] data, String contentType) {
            this.returnCode = returnCode;
            this.data = data;
            this.contentType = contentType;
        }
    }

    public interface Key {
        public int hashCode();
        public boolean equals(Object other);
    }
}