| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds licenses this file |
| * to you 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 org.jclouds.http.functions; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| import static org.jclouds.http.HttpUtils.releasePayload; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| |
| import javax.inject.Inject; |
| import javax.inject.Provider; |
| import javax.ws.rs.core.HttpHeaders; |
| import javax.ws.rs.core.UriBuilder; |
| |
| import org.jclouds.http.HttpException; |
| import org.jclouds.http.HttpRequest; |
| import org.jclouds.http.HttpResponse; |
| import org.jclouds.http.HttpResponseException; |
| import org.jclouds.rest.InvocationContext; |
| import org.jclouds.util.Strings2; |
| |
| import com.google.common.base.Function; |
| |
| /** |
| * parses a single URI from a list |
| * |
| * @author Adrian Cole |
| */ |
| public class ParseURIFromListOrLocationHeaderIf20x implements Function<HttpResponse, URI>, |
| InvocationContext<ParseURIFromListOrLocationHeaderIf20x> { |
| private final Provider<UriBuilder> uriBuilderProvider; |
| |
| @Inject |
| ParseURIFromListOrLocationHeaderIf20x(Provider<UriBuilder> uriBuilderProvider) { |
| this.uriBuilderProvider = uriBuilderProvider; |
| } |
| |
| private HttpRequest request; |
| |
| public URI apply(HttpResponse from) { |
| if (from.getStatusCode() > 206) |
| throw new HttpException(String.format("Unhandled status code - %1$s", from)); |
| if ("text/uri-list".equals(from.getFirstHeaderOrNull(HttpHeaders.CONTENT_TYPE))) { |
| try { |
| if (from.getPayload().getInput() == null) |
| throw new HttpResponseException("no content", null, from); |
| String toParse = Strings2.toStringAndClose(from.getPayload().getInput()); |
| return URI.create(toParse.trim()); |
| } catch (IOException e) { |
| throw new HttpResponseException("couldn't parse uri from content", null, from, e); |
| } finally { |
| releasePayload(from); |
| } |
| } else { |
| releasePayload(from); |
| String location = from.getFirstHeaderOrNull(HttpHeaders.LOCATION); |
| if (location == null) |
| location = from.getFirstHeaderOrNull("location"); |
| if (location != null) { |
| URI locationUri = URI.create(location); |
| if (locationUri.getHost() != null) |
| return locationUri; |
| checkState(request != null, "request should have been initialized"); |
| if (!location.startsWith("/")) |
| location = "/" + location; |
| UriBuilder builder = uriBuilderProvider.get().uri(URI.create("http://localhost" + location)); |
| builder.host(request.getEndpoint().getHost()); |
| builder.port(request.getEndpoint().getPort()); |
| builder.scheme(request.getEndpoint().getScheme()); |
| return builder.build(); |
| } else { |
| throw new HttpResponseException("no uri in headers or content", null, from); |
| } |
| |
| } |
| } |
| |
| @Override |
| public ParseURIFromListOrLocationHeaderIf20x setContext(HttpRequest request) { |
| this.request = request; |
| return this; |
| } |
| } |