AEM-REST-Integration/HttpClientFactoryImpl.java at master · kiransg89/AEM-REST-Integration · GitHub

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package com.example.core.services.impl;

import java.io.IOException;

import java.security.KeyManagementException;

import java.security.KeyStoreException;

import java.security.NoSuchAlgorithmException;

import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.TimeUnit;

import org.apache.commons.lang3.StringUtils;

import org.apache.http.Header;

import org.apache.http.HttpResponse;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.client.fluent.Executor;

import org.apache.http.client.fluent.Request;

import org.apache.http.config.Registry;

import org.apache.http.config.RegistryBuilder;

import org.apache.http.conn.ConnectionKeepAliveStrategy;

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.conn.ssl.TrustAllStrategy;

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.message.BasicHeader;

import org.apache.http.osgi.services.HttpClientBuilderFactory;

import org.apache.http.protocol.HttpContext;

import org.apache.http.ssl.SSLContextBuilder;

import org.osgi.service.component.annotations.Activate;

import org.osgi.service.component.annotations.Component;

import org.osgi.service.component.annotations.Deactivate;

import org.osgi.service.component.annotations.Modified;

import org.osgi.service.component.annotations.Reference;

import org.osgi.service.metatype.annotations.Designate;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.example.core.services.HttpClientFactory;

import com.example.core.services.config.HttpClientFactoryConfig;

/**

* Implementation of @{@link HttpClientFactory}.

* <p>

* HttpClientFactory provides service to handle API connection and executor.

@Component(service = HttpClientFactory.class)

@Designate(ocd = HttpClientFactoryConfig.class)

public class HttpClientFactoryImpl implements HttpClientFactory {

private static final Logger log = LoggerFactory.getLogger(HttpClientFactoryImpl.class);

private Executor executor;

private String baseUrl;

private String uriExternalType;

private String apiStoreLocatorHostName;

private CloseableHttpClient httpClient;

private HttpClientFactoryConfig config;

@Reference

private HttpClientBuilderFactory httpClientBuilderFactory;

@Activate

@Modified

protected void activate(HttpClientFactoryConfig config) throws Exception {

log.info("########### OSGi Configs Start ###############");

log.info("API Host Name : {}", config.apiHostName());

log.info("URI Type: {}", config.uriType());

log.info("########### OSGi Configs End ###############");

closeHttpConnection();

this.config = config;

if (this.config.apiHostName() == null) {

log.debug("Configuration is not valid. Both hostname is mandatory.");

throw new IllegalArgumentException("Configuration is not valid. Both hostname is mandatory.");

}

this.uriExternalType = this.config.uriExternalType();

this.apiStoreLocatorHostName = this.config.apiStoreLocatorHostName();

this.baseUrl = StringUtils.join(this.config.apiHostName(), config.uriType());

initExecutor();

}

private void initExecutor() throws Exception {

PoolingHttpClientConnectionManager connMgr = null;

RequestConfig requestConfig = initRequestConfig();

HttpClientBuilder builder = httpClientBuilderFactory.newBuilder();

builder.setDefaultRequestConfig(requestConfig);

if (config.relaxedSSL()) {

connMgr = initPoolingConnectionManagerWithRelaxedSSL();

} else {

connMgr = new PoolingHttpClientConnectionManager();

}

connMgr.closeExpiredConnections();

connMgr.setMaxTotal(config.maxTotalOpenConnections());

connMgr.setDefaultMaxPerRoute(config.maxConcurrentConnectionPerRoute());

builder.setConnectionManager(connMgr);

List<Header> headers = new ArrayList<>();

headers.add(new BasicHeader("Accept", "application/json"));

builder.setDefaultHeaders(headers);

builder.setKeepAliveStrategy(keepAliveStratey);

httpClient = builder.build();

executor = Executor.newInstance(httpClient);

}

private PoolingHttpClientConnectionManager initPoolingConnectionManagerWithRelaxedSSL()

throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {

PoolingHttpClientConnectionManager connMgr;

SSLContextBuilder sslbuilder = new SSLContextBuilder();

sslbuilder.loadTrustMaterial(new TrustAllStrategy());

SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslbuilder.build(),

NoopHostnameVerifier.INSTANCE);

Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()

.register("http", PlainConnectionSocketFactory.getSocketFactory()).register("https", sslsf).build();

connMgr = new PoolingHttpClientConnectionManager(socketFactoryRegistry);

return connMgr;

}

private RequestConfig initRequestConfig() {

return RequestConfig.custom()

.setConnectTimeout(Math.toIntExact(TimeUnit.SECONDS.toMillis(config.defaultConnectionTimeout())))

.setSocketTimeout(Math.toIntExact(TimeUnit.SECONDS.toMillis(config.defaultSocketTimeout())))

.setConnectionRequestTimeout(

Math.toIntExact(TimeUnit.SECONDS.toMillis(config.defaultConnectionRequestTimeout())))

.build();

}

@Deactivate

protected void deactivate() {

closeHttpConnection();

}

private void closeHttpConnection() {

if (null != httpClient) {

try {

httpClient.close();

} catch (final IOException exception) {

log.debug("IOException while clossing API, {}", exception.getMessage());

}

@Override

public Executor getExecutor() {

return executor;

}

@Override

public Request get(String partialUrl) {

String url = baseUrl + partialUrl;

return Request.Get(url);

}

@Override

public Request post(String partialUrl) {

String url = baseUrl + partialUrl;

return Request.Post(url);

}

@Override

public Request postWithAbsolute(String absolutelUrl) {

return Request.Post(absolutelUrl);

}

@Override

public Request put(String partialUrl) {

String url = baseUrl + partialUrl;

return Request.Put(url);

}

@Override

public Request delete(String partialUrl) {

String url = baseUrl + partialUrl;

return Request.Delete(url);

}

@Override

public Request options(String partialUrl) {

String url = baseUrl + partialUrl;

return Request.Options(url);

}

@Override

public String getExternalURIType() {

return uriExternalType;

}

@Override

public String getApiStoreLocatorHostName() {

return apiStoreLocatorHostName;

}

ConnectionKeepAliveStrategy keepAliveStratey = new ConnectionKeepAliveStrategy() {

@Override

public long getKeepAliveDuration(HttpResponse response, HttpContext context) {

* HeaderElementIterator headerElementIterator = new BasicHeaderElementIterator(

* response.headerIterator(HTTP.CONN_KEEP_ALIVE));

* while (headerElementIterator.hasNext()) { HeaderElement headerElement =

* headerElementIterator.nextElement(); String param = headerElement.getName();

* String value = headerElement.getValue(); if (value != null &&

* param.equalsIgnoreCase("timeout")) { return

* TimeUnit.SECONDS.toMillis(Long.parseLong(value)); } }

return TimeUnit.SECONDS.toMillis(config.defaultKeepAliveconnection());

}

};

}

AEM-REST-Integration/HttpClientFactoryImpl.java at master · kiransg89/AEM-REST-Integration · GitHub

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