| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF 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; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.io.File; |
| import java.io.InputStream; |
| import java.util.Collection; |
| |
| import org.jclouds.functions.ToLowerCase; |
| import org.jclouds.http.internal.PayloadEnclosingImpl; |
| import org.jclouds.io.Payload; |
| import org.jclouds.io.Payloads; |
| import org.jclouds.javax.annotation.Nullable; |
| import org.jclouds.util.Multimaps2; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Objects; |
| import com.google.common.base.MoreObjects.ToStringHelper; |
| import com.google.common.collect.ImmutableMultimap; |
| import com.google.common.collect.Multimap; |
| import com.google.common.io.ByteSource; |
| |
| /** |
| * Represents a request that can be executed within {@link HttpCommandExecutorService} |
| */ |
| public class HttpMessage extends PayloadEnclosingImpl { |
| |
| public static Builder<?> builder() { |
| return new ConcreteBuilder(); |
| } |
| |
| public Builder<?> toBuilder() { |
| return new ConcreteBuilder().fromHttpMessage(this); |
| } |
| |
| public abstract static class Builder<T extends Builder<T>> { |
| protected abstract T self(); |
| |
| protected ImmutableMultimap.Builder<String, String> headers = ImmutableMultimap.<String, String>builder(); |
| protected Payload payload; |
| |
| /** |
| * @see HttpMessage#getPayload() |
| */ |
| public T payload(Payload payload) { |
| this.payload = payload; |
| return self(); |
| } |
| |
| /** |
| * @see HttpMessage#getPayload() |
| */ |
| public T payload(byte [] payload) { |
| this.payload = Payloads.newByteArrayPayload(checkNotNull(payload, "payload")); |
| return self(); |
| } |
| |
| /** |
| * @see HttpMessage#getPayload() |
| */ |
| public T payload(ByteSource payload) { |
| this.payload = Payloads.newByteSourcePayload(checkNotNull(payload, "payload")); |
| return self(); |
| } |
| |
| /** |
| * @see HttpMessage#getPayload() |
| */ |
| public T payload(File payload) { |
| this.payload = Payloads.newFilePayload(checkNotNull(payload, "payload")); |
| return self(); |
| } |
| |
| /** |
| * @see HttpMessage#getPayload() |
| */ |
| public T payload(InputStream payload) { |
| this.payload = Payloads.newInputStreamPayload(checkNotNull(payload, "payload")); |
| return self(); |
| } |
| |
| /** |
| * @see HttpMessage#getPayload() |
| */ |
| public T payload(String payload) { |
| this.payload = Payloads.newStringPayload(checkNotNull(payload, "payload")); |
| return self(); |
| } |
| |
| /** |
| * replaces all headers with the the supplied multimap. |
| * |
| * @see HttpMessage#getHeaders() |
| */ |
| public T headers(Multimap<String, String> headers) { |
| this.headers = ImmutableMultimap.<String, String> builder(); |
| this.headers.putAll(checkNotNull(headers, "headers")); |
| return self(); |
| } |
| |
| /** |
| * replace all headers that have the same keys as the input multimap |
| * |
| * @see HttpMessage#getHeaders() |
| */ |
| public T replaceHeaders(Multimap<String, String> headers) { |
| checkNotNull(headers, "headers"); |
| Multimap<String, String> oldHeaders = this.headers.build(); |
| this.headers = ImmutableMultimap.<String, String> builder(); |
| this.headers.putAll(Multimaps2.replaceEntries(oldHeaders, headers)); |
| return self(); |
| } |
| |
| /** |
| * replace all headers that have the same keys as the input multimap |
| * |
| * @see HttpMessage#getHeaders() |
| */ |
| public T removeHeader(String name) { |
| checkNotNull(name, "name"); |
| Multimap<String, String> oldHeaders = this.headers.build(); |
| this.headers = ImmutableMultimap.<String, String> builder(); |
| this.headers.putAll(Multimaps2.withoutKey(oldHeaders, name)); |
| return self(); |
| } |
| |
| /** |
| * Note that if there's an existing header of the same name, this will only add the new value, |
| * not replace it. |
| * |
| * @see HttpMessage#getHeaders() |
| */ |
| public T addHeader(String name, String ... values) { |
| this.headers.putAll(checkNotNull(name, "name"), checkNotNull(values, "values of %s", name)); |
| return self(); |
| } |
| |
| /** |
| * Replace header. |
| * |
| * @see HttpMessage#getHeaders() |
| */ |
| public T replaceHeader(String name, String ... values) { |
| checkNotNull(name, "name"); |
| checkNotNull(values, "values of %s", name); |
| return replaceHeaders(ImmutableMultimap.<String, String> builder().putAll(name, values).build()); |
| } |
| |
| public HttpMessage build() { |
| return new HttpMessage(headers.build(), payload); |
| } |
| |
| public T fromHttpMessage(HttpMessage in) { |
| return this |
| .headers(in.getHeaders()) |
| .payload(in.getPayload()); |
| } |
| } |
| |
| private static class ConcreteBuilder extends Builder<ConcreteBuilder> { |
| @Override |
| protected ConcreteBuilder self() { |
| return this; |
| } |
| } |
| |
| protected final Multimap<String, String> headers; |
| |
| protected HttpMessage(Multimap<String, String> headers, @Nullable Payload payload) { |
| super(payload); |
| this.headers = ImmutableMultimap.copyOf(checkNotNull(headers, "headers")); |
| } |
| |
| public Multimap<String, String> getHeaders() { |
| return headers; |
| } |
| |
| /** |
| * try to get the value, then try as lowercase. |
| */ |
| public String getFirstHeaderOrNull(String string) { |
| Collection<String> values = headers.get(string); |
| if (values.isEmpty()) { |
| Multimap<String, String> lowerCaseHeaders = Multimaps2.transformKeys(getHeaders(), new ToLowerCase()); |
| values = lowerCaseHeaders.get(string.toLowerCase()); |
| } |
| return (values.size() >= 1) ? values.iterator().next() : null; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(headers, payload); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) return true; |
| // testing equals by value, not by type |
| if (!(obj instanceof HttpMessage)) return false; |
| HttpMessage that = HttpMessage.class.cast(obj); |
| return Objects.equal(this.headers, that.headers) |
| && Objects.equal(this.payload, that.payload); |
| } |
| |
| protected ToStringHelper string() { |
| return MoreObjects.toStringHelper("").omitNullValues() |
| .add("headers", headers) |
| .add("payload", payload); |
| } |
| |
| @Override |
| public String toString() { |
| return string().toString(); |
| } |
| } |