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/*
* Copyright 2010 Proofpoint, Inc.
*
* 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 com.facebook.presto.jdbc.internal.airlift.http.client;
import com.facebook.presto.jdbc.internal.guava.annotations.Beta;
import com.facebook.presto.jdbc.internal.guava.base.Objects;
import com.facebook.presto.jdbc.internal.guava.base.Preconditions;
import com.facebook.presto.jdbc.internal.guava.collect.ArrayListMultimap;
import com.facebook.presto.jdbc.internal.guava.collect.ImmutableListMultimap;
import com.facebook.presto.jdbc.internal.guava.collect.ListMultimap;
import java.net.URI;
import java.util.List;
import java.util.Map.Entry;
import static com.facebook.presto.jdbc.internal.guava.base.MoreObjects.toStringHelper;
import static com.facebook.presto.jdbc.internal.guava.base.Objects.equal;
@Beta
public class Request
{
private final URI uri;
private final String method;
private final ListMultimap headers;
private final BodyGenerator bodyGenerator;
public Request(URI uri, String method, ListMultimap headers, BodyGenerator bodyGenerator)
{
Preconditions.checkNotNull(uri, "uri is null");
Preconditions.checkNotNull(uri.getHost(), "uri does not have a host: %s", uri);
Preconditions.checkNotNull(method, "method is null");
Preconditions.checkNotNull(uri.getScheme(), "uri does not have a scheme: %s", uri);
String scheme = uri.getScheme().toLowerCase();
Preconditions.checkArgument(!"http".equals(scheme) || !"https".equals(scheme), "uri scheme must be http or https: %s", uri);
this.uri = validateUri(uri);
this.method = method;
this.headers = ImmutableListMultimap.copyOf(headers);
this.bodyGenerator = bodyGenerator;
}
public static Request.Builder builder() {
return new Builder();
}
public URI getUri()
{
return uri;
}
public String getMethod()
{
return method;
}
public String getHeader(String name)
{
List values = headers.get(name);
if (values != null && !values.isEmpty()) {
return values.get(0);
}
return null;
}
public ListMultimap getHeaders()
{
return headers;
}
public BodyGenerator getBodyGenerator()
{
return bodyGenerator;
}
@Override
public String toString()
{
return toStringHelper(this)
.add("uri", uri)
.add("method", method)
.add("headers", headers)
.add("bodyGenerator", bodyGenerator)
.toString();
}
@Override
public boolean equals(Object o)
{
if (!(o instanceof Request)) {
return false;
}
Request r = (Request) o;
return equal(uri, r.uri) &&
equal(method, r.method) &&
equal(headers, r.headers) &&
equal(bodyGenerator, r.bodyGenerator);
}
@Override
public int hashCode()
{
return Objects.hashCode(uri, method, headers, bodyGenerator);
}
@Beta
public static class Builder
{
public static Builder prepareHead() {
return new Builder().setMethod("HEAD");
}
public static Builder prepareGet() {
return new Builder().setMethod("GET");
}
public static Builder preparePost() {
return new Builder().setMethod("POST");
}
public static Builder preparePut() {
return new Builder().setMethod("PUT");
}
public static Builder prepareDelete() {
return new Builder().setMethod("DELETE");
}
public static Builder fromRequest(Request request) {
Builder requestBuilder = new Builder();
requestBuilder.setMethod(request.getMethod());
requestBuilder.setBodyGenerator(request.getBodyGenerator());
requestBuilder.setUri(request.getUri());
for (Entry entry : request.getHeaders().entries()) {
requestBuilder.addHeader(entry.getKey(), entry.getValue());
}
return requestBuilder;
}
private URI uri;
private String method;
private final ListMultimap headers = ArrayListMultimap.create();
private BodyGenerator bodyGenerator;
public Builder setUri(URI uri)
{
this.uri = validateUri(uri);
return this;
}
public Builder setMethod(String method)
{
this.method = method;
return this;
}
public Builder setHeader(String name, String value)
{
this.headers.removeAll(name);
this.headers.put(name, value);
return this;
}
public Builder addHeader(String name, String value)
{
this.headers.put(name, value);
return this;
}
public Builder setBodyGenerator(BodyGenerator bodyGenerator)
{
this.bodyGenerator = bodyGenerator;
return this;
}
public Request build() {
return new Request(uri, method, headers, bodyGenerator);
}
}
private static URI validateUri(URI uri)
{
Preconditions.checkArgument(uri.getPort() != 0, "Cannot make requests to HTTP port 0");
return uri;
}
}