connector-bugzilla-rest/org.eclipse.mylyn.bugzilla.rest.core/src/org/eclipse/mylyn/internal/bugzilla/rest/core/BugzillaRestValidateRequest.java

/*******************************************************************************
 * Copyright (c) 2013 Frank Becker and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Frank Becker - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.internal.bugzilla.rest.core;

import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.http.HttpStatus;
import org.eclipse.mylyn.commons.core.operations.IOperationMonitor;
import org.eclipse.mylyn.commons.repositories.http.core.CommonHttpResponse;
import org.eclipse.mylyn.internal.bugzilla.rest.core.response.data.ErrorResponse;

import com.google.common.io.CharStreams;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

public class BugzillaRestValidateRequest extends BugzillaRestAuthenticatedGetRequest<ErrorResponse> {

	public BugzillaRestValidateRequest(BugzillaRestHttpClient client) {
		super(client, "", new TypeToken<ErrorResponse>() {
		});
	}

	@Override
	protected void doValidate(CommonHttpResponse response, IOperationMonitor monitor)
			throws IOException, BugzillaRestException {
		// since 4.5.5 we get an HttpStatus.SC_NOT_FOUND instead of an HttpStatus.SC_BAD_REQUEST
		validate(response, response.getStatusCode() == HttpStatus.SC_NOT_FOUND
				? HttpStatus.SC_NOT_FOUND
				: HttpStatus.SC_BAD_REQUEST, monitor);
	}

	@Override
	protected ErrorResponse parseFromJson(InputStreamReader in) throws BugzillaRestException {
		String jsonString;
		try {
			jsonString = CharStreams.toString(in);
		} catch (IOException e) {
			throw new BugzillaRestException(e);
		}
		if (jsonString.startsWith("{\"result\":{")) { //$NON-NLS-1$
			jsonString = jsonString.substring(10, jsonString.length() - 1);
		}

		TypeToken<ErrorResponse> a = new TypeToken<ErrorResponse>() {
		};
		return new Gson().fromJson(jsonString, a.getType());
	}

}