io.redlink.sdk.impl.RedLinkClient Maven / Gradle / Ivy
/**
* 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 io.redlink.sdk.impl;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.redlink.sdk.util.VersionHelper;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.DeflateInputStream;
import org.apache.http.client.entity.InputStreamFactory;
import org.apache.http.client.methods.*;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.InputStreamEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;
import org.openrdf.rio.RDFFormat;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URI;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.zip.GZIPInputStream;
/**
* Redlink client wrapping HttpClient
*
* @author [email protected]
*/
public class RedLinkClient implements Serializable {
private static final long serialVersionUID = -6399964450824289653L;
public static final int REQUEST_TIMEOUT = 60; //TODO: configuration
public static final Map decoderRegistry;
public static final InputStreamFactory GZIP = new InputStreamFactory() {
@Override
public InputStream create(InputStream in) throws IOException {
return new GZIPInputStream(in);
}
};
public static final InputStreamFactory DEFLATE = new InputStreamFactory() {
@Override
public InputStream create(InputStream in) throws IOException {
return new DeflateInputStream(in);
}
};
public static final InputStreamFactory IDENTITY = new InputStreamFactory() {
@Override
public InputStream create(InputStream in) throws IOException {
return in;
}
};
static {
Map dr = new HashMap<>();
dr.put("gzip", GZIP);
dr.put("x-gzip", GZIP);
dr.put("deflate", DEFLATE);
dr.put("none", IDENTITY);
decoderRegistry = Collections.unmodifiableMap(dr);
}
private transient CloseableHttpClient client;
private final ObjectMapper mapper;
public RedLinkClient() {
mapper = new ObjectMapper();
client = buildHttpClient();
}
private CloseableHttpClient buildHttpClient() {
final HttpClientBuilder builder = HttpClientBuilder.create();
RequestConfig config = RequestConfig.custom()
.setConnectTimeout(REQUEST_TIMEOUT * 1000)
.setConnectionRequestTimeout(REQUEST_TIMEOUT * 1000)
.setSocketTimeout(REQUEST_TIMEOUT * 1000).build();
builder.setDefaultRequestConfig(config);
builder.setUserAgent(String.format("RedlinkJavaSDK/%s", VersionHelper.getVersion()));
//see http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html
try {
// load the certificate
InputStream fis = RedLinkClient.class.getResourceAsStream("/redlink-CA.crt");
CertificateFactory cf = CertificateFactory.getInstance("X.509");
Certificate cert = cf.generateCertificate(fis);
// Load the keyStore that includes self-signed cert as a "trusted" entry
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.load(null, null);
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
keyStore.setCertificateEntry("redlink-CA", cert);
tmf.init(keyStore);
final SSLContext ctx = SSLContext.getInstance("SSLv3");
ctx.init(null, tmf.getTrustManagers(), null);
//SSLSocketFactory sslFactory = ctx.getSocketFactory();
final SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(ctx, new NoopHostnameVerifier());
final Registry r = RegistryBuilder.create()
.register("http", PlainConnectionSocketFactory.getSocketFactory())
.register("https", sslsf)
.build();
final PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(r);
cm.setMaxTotal(100);
builder.setConnectionManager(cm);
} catch (NoSuchAlgorithmException | KeyStoreException | KeyManagementException | CertificateException | IOException e) {
throw new IllegalArgumentException(e);
}
// Workaround for SEARCH-230: we use our own Content-Encoding decoder registry.
builder.setContentDecoderRegistry(decoderRegistry);
return builder.build();
}
public String get(final URI target) throws IOException {
return get(target, "");
}
public String get(final URI target, final String accept) throws IOException {
final ResponseHandler handler = new ResponseHandler() {
@Override
public String handleResponse(final HttpResponse response) throws IOException {
final int status = response.getStatusLine().getStatusCode();
if (status >= 200 && status < 300) {
HttpEntity entity = response.getEntity();
return entity != null ? EntityUtils.toString(entity) : null;
} else {
throw new ClientProtocolException("Unexpected response status: " + status);
}
}
};
return get(target, accept, handler);
}
public T get(final URI target, final Class clazz) throws IOException {
return get(target, clazz, null);
}
public T get(final URI target, final Class clazz, String accept) throws IOException {
final ResponseHandler handler = new ResponseHandler() {
@Override
public T handleResponse(final HttpResponse response) throws IOException {
final int status = response.getStatusLine().getStatusCode();
if (status >= 200 && status < 300) {
HttpEntity entity = response.getEntity();
return mapper.readValue(entity.getContent(), clazz);
} else {
throw new ClientProtocolException("Unexpected response status: " + status);
}
}
};
return get(target, accept, handler);
}
private T get(final URI target, String accept, ResponseHandler handler) throws IOException {
final HttpGet get = new HttpGet(target);
if (StringUtils.isNotBlank(accept)) {
get.setHeader("Accept", accept);
}
if (client == null) {
client = buildHttpClient();
}
return client.execute(get, handler);
}
public CloseableHttpResponse put(URI target, InputStream in, RDFFormat format) throws IOException {
return exec(new HttpPut(target), in, format);
}
public CloseableHttpResponse post(URI target, InputStream in, RDFFormat format) throws IOException {
return exec(new HttpPost(target), in, format);
}
public CloseableHttpResponse post(URI target) throws IOException {
return post(target, null);
}
public CloseableHttpResponse post(URI target, String accept) throws IOException {
final HttpPost post = new HttpPost(target);
if (StringUtils.isNotBlank(accept)) {
post.setHeader("Accept", accept);
}
if (client == null) {
client = buildHttpClient();
}
return client.execute(post);
}
public CloseableHttpResponse post(URI target, String body, String accept) throws IOException {
return exec(new HttpPost(target), new StringEntity(body), accept, null);
}
public CloseableHttpResponse post(URI target, String body, String accept, String contentType) throws IOException {
return exec(new HttpPost(target), new StringEntity(body), accept, contentType);
}
public CloseableHttpResponse post(URI target, InputStream in, String accept, String contentType) throws IOException {
return exec(new HttpPost(target), new InputStreamEntity(in), accept, contentType);
}
private CloseableHttpResponse exec(HttpEntityEnclosingRequestBase req, HttpEntity entity, String accept, String format) throws IOException {
req.setEntity(entity);
if (StringUtils.isNotBlank(accept)) {
req.setHeader("Accept", accept);
}
if (StringUtils.isNotBlank(format)) {
req.setHeader("Content-Type", format);
}
if (client == null) {
client = buildHttpClient();
}
return client.execute(req);
}
private CloseableHttpResponse exec(HttpEntityEnclosingRequestBase req, InputStream in, RDFFormat format) throws IOException {
return exec(req, new InputStreamEntity(in), format);
}
private CloseableHttpResponse exec(HttpEntityEnclosingRequestBase req, HttpEntity entity, RDFFormat format) throws IOException {
req.setEntity(entity);
req.setHeader("Content-Type", format.getDefaultMIMEType());
if (client == null) {
client = buildHttpClient();
}
return client.execute(req);
}
public CloseableHttpResponse delete(URI target) throws IOException {
final HttpDelete delete = new HttpDelete(target);
if (client == null) {
client = buildHttpClient();
}
return client.execute(delete);
}
}
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