/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.http;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.MediaType;
import org.eclipse.jetty.http.HttpHeaders;
import org.eclipse.jetty.http.HttpMethods;
import org.eclipse.jetty.http.HttpStatus;
import org.eclipse.jetty.server.Request;
import com.foundationdb.rest.RestResponseBuilder;
import com.foundationdb.server.error.ErrorCode;
import org.eclipse.jetty.server.Response;
import org.eclipse.jetty.server.handler.ErrorHandler;
public class JsonErrorHandler extends ErrorHandler {
@Override
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException {
baseRequest.setHandled(true);
String method = request.getMethod();
if(!method.equals(HttpMethods.GET) && !method.equals(HttpMethods.POST) && !method.equals(HttpMethods.HEAD)) {
return;
}
final String message;
final ErrorCode error;
final String note;
if(response.getStatus() == HttpServletResponse.SC_NOT_FOUND) {
message = "Path not found";
if (!request.getRequestURI().contains("/v1/")) {
note = "try including /v1/ in the path";
} else {
note = null;
}
error = ErrorCode.MALFORMED_REQUEST;
} else {
if (response instanceof Response) {
note = ((Response)response).getReason();
} else {
note = null;
}
message = HttpStatus.getMessage(response.getStatus());
error = ErrorCode.INTERNAL_ERROR;
}
response.setContentType(MediaType.APPLICATION_JSON);
response.setHeader(HttpHeaders.CACHE_CONTROL, getCacheControl());
StringBuilder builder = new StringBuilder();
RestResponseBuilder.formatJsonError(builder, error.getFormattedValue(), message, note);
builder.append('\n');
response.setContentLength(builder.length());
OutputStream out = response.getOutputStream();
out.write(builder.toString().getBytes());
out.close();
}
}