/* * Copyright 2016 The Simple File Server Authors * * 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 org.sfs.nodes.data; import com.google.common.base.Optional; import io.vertx.core.http.HttpServerResponse; import org.sfs.SfsRequest; import org.sfs.filesystem.volume.ReadStreamBlob; import org.sfs.rx.Holder2; import rx.functions.Func1; import static java.lang.String.valueOf; import static org.sfs.util.SfsHttpHeaders.X_CONTENT_OFFSET; public class WriteReadStreamBlobAsHttpResponseHeaders<A extends ReadStreamBlob> implements Func1<Holder2<SfsRequest, Optional<A>>, Holder2<SfsRequest, Optional<A>>> { @Override public Holder2<SfsRequest, Optional<A>> call(Holder2<SfsRequest, Optional<A>> input) { HttpServerResponse httpServerResponse = input.value0().response(); Optional<A> oBlob = input.value1(); if (oBlob.isPresent()) { A blob = oBlob.get(); long offset = blob.getOffset(); httpServerResponse .putHeader(X_CONTENT_OFFSET, valueOf(offset)); } return input; } }