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A web service test double for all occasions - standalone edition
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/*
 * Copyright (C) 2011 Thomas Akehurst
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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 com.github.tomakehurst.wiremock.http;

import com.github.tomakehurst.wiremock.stubbing.ServeEvent;
import com.google.common.base.Stopwatch;

import java.util.List;

import static com.github.tomakehurst.wiremock.common.LocalNotifier.notifier;
import static com.google.common.collect.Lists.newArrayList;
import static java.util.concurrent.TimeUnit.MILLISECONDS;

public abstract class AbstractRequestHandler implements RequestHandler, RequestEventSource {

	protected List listeners = newArrayList();
	protected final ResponseRenderer responseRenderer;

	public AbstractRequestHandler(ResponseRenderer responseRenderer) {
		this.responseRenderer = responseRenderer;
	}

	@Override
	public void addRequestListener(RequestListener requestListener) {
		listeners.add(requestListener);
	}

	protected void beforeResponseSent(ServeEvent serveEvent, Response response) {}
    protected void afterResponseSent(ServeEvent serveEvent, Response response) {}

	@Override
	public void handle(Request request, HttpResponder httpResponder) {
        Stopwatch stopwatch = Stopwatch.createStarted();
		ServeEvent serveEvent = handleRequest(request);
		ResponseDefinition responseDefinition = serveEvent.getResponseDefinition();
		responseDefinition.setOriginalRequest(request);
		Response response = responseRenderer.render(serveEvent);
		ServeEvent completedServeEvent = serveEvent.complete(response, (int) stopwatch.elapsed(MILLISECONDS));

		if (logRequests()) {
			notifier().info("Request received:\n" +
					formatRequest(request) +
					"\n\nMatched response definition:\n" + responseDefinition +
					"\n\nResponse:\n" + response);
		}

		for (RequestListener listener: listeners) {
			listener.requestReceived(request, response);
		}

        beforeResponseSent(completedServeEvent, response);

		stopwatch.reset();
		stopwatch.start();
		httpResponder.respond(request, response);

        completedServeEvent.afterSend((int) stopwatch.elapsed(MILLISECONDS));
        afterResponseSent(completedServeEvent, response);
        stopwatch.stop();
	}

	protected String formatRequest(Request request) {
		StringBuilder sb = new StringBuilder();
		sb.append(request.getClientIp())
				.append(" - ")
				.append(request.getMethod())
				.append(" ")
				.append(request.getUrl());

		if (request.isBrowserProxyRequest()) {
			sb.append(" (via browser proxy request)");
		}

		sb.append("\n\n");
		sb.append(request.getHeaders());

		if (request.getBody() != null) {
			sb.append(request.getBodyAsString()).append("\n");
		}

		return sb.toString();
	}

	protected boolean logRequests() { return false; }

	protected abstract ServeEvent handleRequest(Request request);
}