/*
* 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.apache.chemistry.opencmis.client.bindings.spi.http;
import static org.apache.chemistry.opencmis.commons.impl.CollectionsHelper.isNotEmpty;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.math.BigInteger;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.X509TrustManager;
import org.apache.chemistry.opencmis.client.bindings.impl.ClientVersion;
import org.apache.chemistry.opencmis.client.bindings.impl.CmisBindingsHelper;
import org.apache.chemistry.opencmis.client.bindings.spi.AbstractAuthenticationProvider;
import org.apache.chemistry.opencmis.client.bindings.spi.BindingSession;
import org.apache.chemistry.opencmis.commons.SessionParameter;
import org.apache.chemistry.opencmis.commons.exceptions.CmisConnectionException;
import org.apache.chemistry.opencmis.commons.exceptions.CmisRuntimeException;
import org.apache.chemistry.opencmis.commons.impl.UrlBuilder;
import org.apache.chemistry.opencmis.commons.spi.AuthenticationProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okio.BufferedSink;
public class OkHttpHttpInvoker implements HttpInvoker {
private static final Logger LOG = LoggerFactory.getLogger(OkHttpHttpInvoker.class);
protected static final String HTTP_CLIENT = "org.apache.chemistry.opencmis.client.bindings.spi.http.OkHttpHttpInvoker.httpClient";
public OkHttpHttpInvoker() {
}
@Override
public Response invokeGET(UrlBuilder url, BindingSession session) {
return invoke(url, "GET", null, null, null, session, null, null);
}
@Override
public Response invokeGET(UrlBuilder url, BindingSession session, BigInteger offset, BigInteger length) {
return invoke(url, "GET", null, null, null, session, offset, length);
}
@Override
public Response invokePOST(UrlBuilder url, String contentType, Output writer, BindingSession session) {
return invoke(url, "POST", contentType, null, writer, session, null, null);
}
@Override
public Response invokePUT(UrlBuilder url, String contentType, Map<String, String> headers, Output writer,
BindingSession session) {
return invoke(url, "PUT", contentType, headers, writer, session, null, null);
}
@Override
public Response invokeDELETE(UrlBuilder url, BindingSession session) {
return invoke(url, "DELETE", null, null, null, session, null, null);
}
private Response invoke(UrlBuilder url, String method, final String contentType, Map<String, String> headers,
final Output writer, BindingSession session, BigInteger offset, BigInteger length) {
int respCode = -1;
try {
// log before connect
if (LOG.isDebugEnabled()) {
LOG.debug("Session {}: {} {}", session.getSessionId(), method, url);
}
// get HTTP client object from session
OkHttpClient httpclient = (OkHttpClient) session.get(HTTP_CLIENT);
if (httpclient == null) {
session.writeLock();
try {
httpclient = (OkHttpClient) session.get(HTTP_CLIENT);
if (httpclient == null) {
httpclient = createClientBuilder(session).build();
session.put(HTTP_CLIENT, httpclient, true);
}
} finally {
session.writeUnlock();
}
}
// set up the request
Request.Builder requestBuilder = new Request.Builder().url(url.toString());
// prepare the request body
RequestBody body = null;
if (writer != null) {
body = new RequestBody() {
@Override
public void writeTo(BufferedSink sink) throws IOException {
try {
OutputStream out = sink.outputStream();
writer.write(out);
out.flush();
} catch (IOException ioe) {
throw ioe;
} catch (Exception e) {
throw new IOException("Could not send stream to server: " + e.toString(), e);
}
}
@Override
public MediaType contentType() {
if (contentType != null) {
return MediaType.parse(contentType);
} else {
return MediaType.parse("application/octet-stream");
}
}
};
}
if ("GET".equals(method)) {
requestBuilder.get();
} else if ("POST".equals(method)) {
requestBuilder.post(body);
} else if ("PUT".equals(method)) {
requestBuilder.put(body);
} else if ("DELETE".equals(method)) {
requestBuilder.delete();
} else {
throw new CmisRuntimeException("Invalid HTTP method!");
}
// set content type
if (contentType != null) {
requestBuilder.header("Content-Type", contentType);
}
// set other headers
if (headers != null) {
for (Map.Entry<String, String> header : headers.entrySet()) {
requestBuilder.addHeader(header.getKey(), header.getValue());
}
}
requestBuilder.header("User-Agent",
(String) session.get(SessionParameter.USER_AGENT, ClientVersion.OPENCMIS_USER_AGENT));
// authenticate
AuthenticationProvider authProvider = CmisBindingsHelper.getAuthenticationProvider(session);
if (authProvider != null) {
Map<String, List<String>> httpHeaders = authProvider.getHTTPHeaders(url.toString());
if (httpHeaders != null) {
for (Map.Entry<String, List<String>> header : httpHeaders.entrySet()) {
if (header.getKey() != null && isNotEmpty(header.getValue())) {
String key = header.getKey();
if (key.equalsIgnoreCase("user-agent")) {
requestBuilder.header("User-Agent", header.getValue().get(0));
} else {
for (String value : header.getValue()) {
if (value != null) {
requestBuilder.addHeader(key, value);
}
}
}
}
}
}
}
// range
if (offset != null || length != null) {
StringBuilder sb = new StringBuilder("bytes=");
if ((offset == null) || (offset.signum() == -1)) {
offset = BigInteger.ZERO;
}
sb.append(offset.toString());
sb.append('-');
if (length != null && length.signum() == 1) {
sb.append(offset.add(length.subtract(BigInteger.ONE)).toString());
}
requestBuilder.header("Range", sb.toString());
}
// compression
Object compression = session.get(SessionParameter.COMPRESSION);
if (compression != null && Boolean.parseBoolean(compression.toString())) {
requestBuilder.header("Accept-Encoding", "gzip,deflate");
}
// locale
if (session.get(CmisBindingsHelper.ACCEPT_LANGUAGE) instanceof String) {
requestBuilder.header("Accept-Language", session.get(CmisBindingsHelper.ACCEPT_LANGUAGE).toString());
}
okhttp3.Response okResponse = httpclient.newCall(requestBuilder.build()).execute();
// get stream, if present
respCode = okResponse.code();
InputStream inputStream = null;
InputStream errorStream = null;
if (respCode == 200 || respCode == 201 || respCode == 203 || respCode == 206) {
inputStream = okResponse.body().byteStream();
} else {
errorStream = okResponse.body().byteStream();
}
Map<String, List<String>> responseHeaders = okResponse.headers().toMultimap();
// log after connect
if (LOG.isTraceEnabled()) {
LOG.trace("Session {}: {} {} > Headers: {}", session.getSessionId(), method, url,
responseHeaders.toString());
}
// forward response HTTP headers
if (authProvider != null) {
authProvider.putResponseHeaders(url.toString(), respCode, responseHeaders);
}
// get the response
return new Response(respCode, okResponse.message(), responseHeaders, inputStream, errorStream);
} catch (Exception e) {
throw new CmisConnectionException(url.toString(), respCode, e);
}
}
/**
* Creates a OkHttpClient.Builder and configures it.
*
* Subclasses can override this method to make use of OkHttp specific
* features.
*
* @param session
* the binding session
*
* @return the builder
*/
@SuppressWarnings("deprecation")
protected OkHttpClient.Builder createClientBuilder(BindingSession session) {
OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder();
// timeouts
int connectTimeout = session.get(SessionParameter.CONNECT_TIMEOUT, -1);
if (connectTimeout >= 0) {
clientBuilder.connectTimeout(connectTimeout, TimeUnit.MILLISECONDS);
}
int readTimeout = session.get(SessionParameter.READ_TIMEOUT, -1);
if (readTimeout >= 0) {
clientBuilder.readTimeout(readTimeout, TimeUnit.MILLISECONDS);
}
AuthenticationProvider authProvider = CmisBindingsHelper.getAuthenticationProvider(session);
if (authProvider != null) {
SSLSocketFactory sf = authProvider.getSSLSocketFactory();
if (sf != null) {
X509TrustManager tm = null;
if (authProvider instanceof AbstractAuthenticationProvider) {
tm = ((AbstractAuthenticationProvider) authProvider).getTrustManager();
}
if (tm == null) {
clientBuilder.sslSocketFactory(sf);
} else {
clientBuilder.sslSocketFactory(sf, tm);
}
}
HostnameVerifier hv = authProvider.getHostnameVerifier();
if (hv != null) {
clientBuilder.hostnameVerifier(hv);
}
}
return clientBuilder;
}
}