refactor utils into a separate module

1 files changed, 152 insertions, 0 deletions

diff --git a/eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/HttpClientFactory.java b/eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/HttpClientFactory.java
new file mode 100644
index 00000000..a141d92d
--- /dev/null
+++ b/eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/HttpClientFactory.java
@@ -0,0 +1,152 @@
+package at.gv.egiz.eaaf.core.impl.utils;
+
+import java.security.NoSuchAlgorithmException;
+
+import javax.annotation.PostConstruct;
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.SSLContext;
+
+import org.apache.http.HttpRequest;
+import org.apache.http.HttpResponse;
+import org.apache.http.ProtocolException;
+import org.apache.http.client.RedirectStrategy;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.client.methods.HttpUriRequest;
+import org.apache.http.conn.socket.LayeredConnectionSocketFactory;
+import org.apache.http.conn.ssl.NoopHostnameVerifier;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.DefaultRedirectStrategy;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
+import org.apache.http.protocol.HttpContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import at.gv.egiz.eaaf.core.api.idp.IConfiguration;
+
+public class HttpClientFactory implements IHttpClientFactory {
+	private static final Logger log = LoggerFactory.getLogger(HttpClientFactory.class);	
+	@Autowired(required=true) private IConfiguration basicConfig;
+	
+	public static final String PROP_CONFIG_CLIENT_HTTP_CONNECTION_POOL_USE = "client.http.connection.pool.use";
+	public static final String PROP_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXTOTAL = "client.http.connection.pool.maxtotal";
+	public static final String PROP_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXPERROUTE = "client.http.connection.pool.maxperroute";
+	public static final String PROP_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_SOCKET = "client.http.connection.timeout.socket";
+	public static final String PROP_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_CONNECTION = "client.http.connection.timeout.connection";
+	public static final String PROP_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_REQUEST = "client.http.connection.timeout.request";
+	public static final String PROP_CONFIG_CLIENT_HTTP_SSL_HOSTNAMEVERIFIER_TRUSTALL = "client.http.ssl.hostnameverifier.trustall";
+	
+	// default configuration values
+	public static final String DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_SOCKET = "15";
+	public static final String DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_CONNECTION = "15";
+	public static final String DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_REQUEST = "30";
+	public static final String DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXTOTAL = "500";
+	public static final String DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXPERROUTE = "100";
+	
+	private HttpClientBuilder httpClientBuilder = null;
+	
+	/* (non-Javadoc)
+	 * @see at.gv.egiz.eaaf.core.impl.utils.IHttpClientFactory#getHttpClient()
+	 */
+	@Override
+	public CloseableHttpClient getHttpClient() {
+		return getHttpClient(true);
+		
+	}
+	
+	@Override
+	public CloseableHttpClient getHttpClient(boolean followRedirects) {
+		RedirectStrategy redirectStrategy = new DefaultRedirectStrategy(); 
+		if (!followRedirects)
+			redirectStrategy = new RedirectStrategy() {
+				
+				@Override
+				public boolean isRedirected(HttpRequest request, HttpResponse response, HttpContext context)
+						throws ProtocolException {
+					return false;
+				}
+				
+				@Override
+				public HttpUriRequest getRedirect(HttpRequest request, HttpResponse response, HttpContext context)
+						throws ProtocolException {
+					return null;
+				}
+			};
+		 
+		return httpClientBuilder
+				.setRedirectStrategy(redirectStrategy)
+				.build();			
+									
+	}
+	
+	@PostConstruct
+	private void initalize() {
+		//initialize http client 
+		log.trace("Initializing HTTP Client-builder ... ");
+		httpClientBuilder = HttpClients.custom();
+		 
+		//set default request configuration
+		final RequestConfig requestConfig = RequestConfig.custom()
+											.setConnectTimeout(Integer.valueOf(basicConfig.getBasicConfiguration(
+													PROP_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_CONNECTION, 
+													DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_CONNECTION)) * 1000)
+											.setConnectionRequestTimeout(Integer.valueOf(basicConfig.getBasicConfiguration(
+													PROP_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_REQUEST, 
+													DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_REQUEST)) * 1000)
+											.setSocketTimeout(Integer.valueOf(basicConfig.getBasicConfiguration(
+													PROP_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_SOCKET, 
+													DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_TIMEOUT_SOCKET)) * 1000)
+											.build();		
+		httpClientBuilder.setDefaultRequestConfig(requestConfig);
+				
+		//set  pool connection if requested
+		if (basicConfig.getBasicConfigurationBoolean(
+				PROP_CONFIG_CLIENT_HTTP_CONNECTION_POOL_USE, 
+				true)) {
+			final PoolingHttpClientConnectionManager pool = new PoolingHttpClientConnectionManager();
+			pool.setDefaultMaxPerRoute(Integer.valueOf(basicConfig.getBasicConfiguration(
+					PROP_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXPERROUTE, 
+					DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXPERROUTE)));			
+			pool.setMaxTotal(Integer.valueOf(basicConfig.getBasicConfiguration(
+					PROP_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXTOTAL, 
+					DEFAULT_CONFIG_CLIENT_HTTP_CONNECTION_POOL_MAXTOTAL)));
+			
+			
+			
+			httpClientBuilder.setConnectionManager(pool);
+			log.debug("Initalize http-client pool with, maxTotal: {} maxPerRoute: {}", pool.getMaxTotal(), pool.getDefaultMaxPerRoute());
+					
+		}
+		
+		try {
+			log.trace("Initializing SSL Context ... ");
+			final SSLContext sslContext = SSLContext.getDefault();
+			HostnameVerifier hostnameVerifier = null;
+			if (basicConfig.getBasicConfigurationBoolean(
+					PROP_CONFIG_CLIENT_HTTP_SSL_HOSTNAMEVERIFIER_TRUSTALL, 
+					false)) {
+				hostnameVerifier = new NoopHostnameVerifier();
+				log.warn("HTTP client-builder deactivates SSL Host-name verification!");
+			}
+			
+			final LayeredConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext , hostnameVerifier);
+			httpClientBuilder.setSSLSocketFactory(sslSocketFactory );
+			
+		} catch (final NoSuchAlgorithmException e) {
+			log.warn("HTTP client-builder can NOT initialze SSL-Context", e);
+			
+		}
+
+		
+		log.info("HTTP client-builder successfuly initialized");
+		
+	}
+
+
+
+	
+	
+}