List of usage examples for org.apache.http.impl.nio.conn PoolingNHttpClientConnectionManager setMaxPerRoute
@Override
public void setMaxPerRoute(final HttpRoute route, final int max)
From source file:afred.javademo.httpclient.official.AsyncClientConfiguration.java
public final static void main(String[] args) throws Exception { // Use custom message parser / writer to customize the way HTTP // messages are parsed from and written out to the data stream. NHttpMessageParserFactory<HttpResponse> responseParserFactory = new DefaultHttpResponseParserFactory() { @Override/* w w w . j a v a 2s . c om*/ public NHttpMessageParser<HttpResponse> create(final SessionInputBuffer buffer, final MessageConstraints constraints) { LineParser lineParser = new BasicLineParser() { @Override public Header parseHeader(final CharArrayBuffer buffer) { try { return super.parseHeader(buffer); } catch (ParseException ex) { return new BasicHeader(buffer.toString(), null); } } }; return new DefaultHttpResponseParser(buffer, lineParser, DefaultHttpResponseFactory.INSTANCE, constraints); } }; NHttpMessageWriterFactory<HttpRequest> requestWriterFactory = new DefaultHttpRequestWriterFactory(); // Use a custom connection factory to customize the process of // initialization of outgoing HTTP connections. Beside standard connection // configuration parameters HTTP connection factory can define message // parser / writer routines to be employed by individual connections. NHttpConnectionFactory<ManagedNHttpClientConnection> connFactory = new ManagedNHttpClientConnectionFactory( requestWriterFactory, responseParserFactory, HeapByteBufferAllocator.INSTANCE); // Client HTTP connection objects when fully initialized can be bound to // an arbitrary network socket. The process of network socket initialization, // its connection to a remote address and binding to a local one is controlled // by a connection socket factory. // SSL context for secure connections can be created either based on // system or application specific properties. SSLContext sslcontext = SSLContexts.createSystemDefault(); // Use custom hostname verifier to customize SSL hostname verification. X509HostnameVerifier hostnameVerifier = new BrowserCompatHostnameVerifier(); // Create a registry of custom connection session strategies for supported // protocol schemes. Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder .<SchemeIOSessionStrategy>create().register("http", NoopIOSessionStrategy.INSTANCE) .register("https", new SSLIOSessionStrategy(sslcontext, hostnameVerifier)).build(); // Use custom DNS resolver to override the system DNS resolution. DnsResolver dnsResolver = new SystemDefaultDnsResolver() { @Override public InetAddress[] resolve(final String host) throws UnknownHostException { if (host.equalsIgnoreCase("myhost")) { return new InetAddress[] { InetAddress.getByAddress(new byte[] { 127, 0, 0, 1 }) }; } else { return super.resolve(host); } } }; // Create I/O reactor configuration IOReactorConfig ioReactorConfig = IOReactorConfig.custom() .setIoThreadCount(Runtime.getRuntime().availableProcessors()).setConnectTimeout(30000) .setSoTimeout(30000).build(); // Create a custom I/O reactort ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(ioReactorConfig); // Create a connection manager with custom configuration. PoolingNHttpClientConnectionManager connManager = new PoolingNHttpClientConnectionManager(ioReactor, connFactory, sessionStrategyRegistry, dnsResolver); // Create message constraints MessageConstraints messageConstraints = MessageConstraints.custom().setMaxHeaderCount(200) .setMaxLineLength(2000).build(); // Create connection configuration ConnectionConfig connectionConfig = ConnectionConfig.custom() .setMalformedInputAction(CodingErrorAction.IGNORE) .setUnmappableInputAction(CodingErrorAction.IGNORE).setCharset(Consts.UTF_8) .setMessageConstraints(messageConstraints).build(); // Configure the connection manager to use connection configuration either // by default or for a specific host. connManager.setDefaultConnectionConfig(connectionConfig); connManager.setConnectionConfig(new HttpHost("somehost", 80), ConnectionConfig.DEFAULT); // Configure total max or per route limits for persistent connections // that can be kept in the pool or leased by the connection manager. connManager.setMaxTotal(100); connManager.setDefaultMaxPerRoute(10); connManager.setMaxPerRoute(new HttpRoute(new HttpHost("somehost", 80)), 20); // Use custom cookie store if necessary. CookieStore cookieStore = new BasicCookieStore(); // Use custom credentials provider if necessary. CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); // Create global request configuration RequestConfig defaultRequestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.BEST_MATCH) .setExpectContinueEnabled(true).setStaleConnectionCheckEnabled(true) .setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST)) .setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC)).build(); // Create an HttpClient with the given custom dependencies and configuration. CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setConnectionManager(connManager) .setDefaultCookieStore(cookieStore).setDefaultCredentialsProvider(credentialsProvider) .setProxy(new HttpHost("myproxy", 8080)).setDefaultRequestConfig(defaultRequestConfig).build(); try { HttpGet httpget = new HttpGet("http://localhost/"); // Request configuration can be overridden at the request level. // They will take precedence over the one set at the client level. RequestConfig requestConfig = RequestConfig.copy(defaultRequestConfig).setSocketTimeout(5000) .setConnectTimeout(5000).setConnectionRequestTimeout(5000) .setProxy(new HttpHost("myotherproxy", 8080)).build(); httpget.setConfig(requestConfig); // Execution context can be customized locally. HttpClientContext localContext = HttpClientContext.create(); // Contextual attributes set the local context level will take // precedence over those set at the client level. localContext.setCookieStore(cookieStore); localContext.setCredentialsProvider(credentialsProvider); System.out.println("Executing request " + httpget.getRequestLine()); httpclient.start(); // Pass local context as a parameter Future<HttpResponse> future = httpclient.execute(httpget, localContext, null); // Please note that it may be unsafe to access HttpContext instance // while the request is still being executed HttpResponse response = future.get(); System.out.println("Response: " + response.getStatusLine()); // Once the request has been executed the local context can // be used to examine updated state and various objects affected // by the request execution. // Last executed request localContext.getRequest(); // Execution route localContext.getHttpRoute(); // Target auth state localContext.getTargetAuthState(); // Proxy auth state localContext.getTargetAuthState(); // Cookie origin localContext.getCookieOrigin(); // Cookie spec used localContext.getCookieSpec(); // User security token localContext.getUserToken(); } finally { httpclient.close(); } }
From source file:com.boonya.http.async.examples.nio.client.AsyncClientConfiguration.java
public final static void main(String[] args) throws Exception { // Use custom message parser / writer to customize the way HTTP // messages are parsed from and written out to the data stream. NHttpMessageParserFactory<HttpResponse> responseParserFactory = new DefaultHttpResponseParserFactory() { @Override//from w w w . j a v a 2 s .c o m public NHttpMessageParser<HttpResponse> create(final SessionInputBuffer buffer, final MessageConstraints constraints) { LineParser lineParser = new BasicLineParser() { @Override public Header parseHeader(final CharArrayBuffer buffer) { try { return super.parseHeader(buffer); } catch (ParseException ex) { return new BasicHeader(buffer.toString(), null); } } }; return new DefaultHttpResponseParser(buffer, lineParser, DefaultHttpResponseFactory.INSTANCE, constraints); } }; NHttpMessageWriterFactory<HttpRequest> requestWriterFactory = new DefaultHttpRequestWriterFactory(); // Use a custom connection factory to customize the process of // initialization of outgoing HTTP connections. Beside standard connection // configuration parameters HTTP connection factory can define message // parser / writer routines to be employed by individual connections. NHttpConnectionFactory<ManagedNHttpClientConnection> connFactory = new ManagedNHttpClientConnectionFactory( requestWriterFactory, responseParserFactory, HeapByteBufferAllocator.INSTANCE); // Client HTTP connection objects when fully initialized can be bound to // an arbitrary network socket. The process of network socket initialization, // its connection to a remote address and binding to a local one is controlled // by a connection socket factory. // SSL context for secure connections can be created either based on // system or application specific properties. SSLContext sslcontext = SSLContexts.createSystemDefault(); // Use custom hostname verifier to customize SSL hostname verification. HostnameVerifier hostnameVerifier = new DefaultHostnameVerifier(); // Create a registry of custom connection session strategies for supported // protocol schemes. Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder .<SchemeIOSessionStrategy>create().register("http", NoopIOSessionStrategy.INSTANCE) .register("https", new SSLIOSessionStrategy(sslcontext, hostnameVerifier)).build(); // Use custom DNS resolver to override the system DNS resolution. DnsResolver dnsResolver = new SystemDefaultDnsResolver() { @Override public InetAddress[] resolve(final String host) throws UnknownHostException { if (host.equalsIgnoreCase("myhost")) { return new InetAddress[] { InetAddress.getByAddress(new byte[] { 127, 0, 0, 1 }) }; } else { return super.resolve(host); } } }; // Create I/O reactor configuration IOReactorConfig ioReactorConfig = IOReactorConfig.custom() .setIoThreadCount(Runtime.getRuntime().availableProcessors()).setConnectTimeout(30000) .setSoTimeout(30000).build(); // Create a custom I/O reactort ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(ioReactorConfig); // Create a connection manager with custom configuration. PoolingNHttpClientConnectionManager connManager = new PoolingNHttpClientConnectionManager(ioReactor, connFactory, sessionStrategyRegistry, dnsResolver); // Create message constraints MessageConstraints messageConstraints = MessageConstraints.custom().setMaxHeaderCount(200) .setMaxLineLength(2000).build(); // Create connection configuration ConnectionConfig connectionConfig = ConnectionConfig.custom() .setMalformedInputAction(CodingErrorAction.IGNORE) .setUnmappableInputAction(CodingErrorAction.IGNORE).setCharset(Consts.UTF_8) .setMessageConstraints(messageConstraints).build(); // Configure the connection manager to use connection configuration either // by default or for a specific host. connManager.setDefaultConnectionConfig(connectionConfig); connManager.setConnectionConfig(new HttpHost("somehost", 80), ConnectionConfig.DEFAULT); // Configure total max or per route limits for persistent connections // that can be kept in the pool or leased by the connection manager. connManager.setMaxTotal(100); connManager.setDefaultMaxPerRoute(10); connManager.setMaxPerRoute(new HttpRoute(new HttpHost("somehost", 80)), 20); // Use custom cookie store if necessary. CookieStore cookieStore = new BasicCookieStore(); // Use custom credentials provider if necessary. CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); // Create global request configuration RequestConfig defaultRequestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.DEFAULT) .setExpectContinueEnabled(true) .setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST)) .setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC)).build(); // Create an HttpClient with the given custom dependencies and configuration. CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setConnectionManager(connManager) .setDefaultCookieStore(cookieStore).setDefaultCredentialsProvider(credentialsProvider) .setProxy(new HttpHost("myproxy", 8080)).setDefaultRequestConfig(defaultRequestConfig).build(); try { HttpGet httpget = new HttpGet("http://localhost/"); // Request configuration can be overridden at the request level. // They will take precedence over the one set at the client level. RequestConfig requestConfig = RequestConfig.copy(defaultRequestConfig).setSocketTimeout(5000) .setConnectTimeout(5000).setConnectionRequestTimeout(5000) .setProxy(new HttpHost("myotherproxy", 8080)).build(); httpget.setConfig(requestConfig); // Execution context can be customized locally. HttpClientContext localContext = HttpClientContext.create(); // Contextual attributes set the local context level will take // precedence over those set at the client level. localContext.setCookieStore(cookieStore); localContext.setCredentialsProvider(credentialsProvider); System.out.println("Executing request " + httpget.getRequestLine()); httpclient.start(); // Pass local context as a parameter Future<HttpResponse> future = httpclient.execute(httpget, localContext, null); // Please note that it may be unsafe to access HttpContext instance // while the request is still being executed HttpResponse response = future.get(); System.out.println("Response: " + response.getStatusLine()); // Once the request has been executed the local context can // be used to examine updated state and various objects affected // by the request execution. // Last executed request localContext.getRequest(); // Execution route localContext.getHttpRoute(); // Target auth state localContext.getTargetAuthState(); // Proxy auth state localContext.getTargetAuthState(); // Cookie origin localContext.getCookieOrigin(); // Cookie spec used localContext.getCookieSpec(); // User security token localContext.getUserToken(); } finally { httpclient.close(); } }
From source file:httpasync.AsyncClientConfiguration.java
public final static void main(String[] args) throws Exception { // Use custom message parser / writer to customize the way HTTP // messages are parsed from and written out to the data stream. NHttpMessageParserFactory<HttpResponse> responseParserFactory = new DefaultHttpResponseParserFactory() { @Override/* ww w . j a v a 2s . co m*/ public NHttpMessageParser<HttpResponse> create(final SessionInputBuffer buffer, final MessageConstraints constraints) { LineParser lineParser = new BasicLineParser() { @Override public Header parseHeader(final CharArrayBuffer buffer) { try { return super.parseHeader(buffer); } catch (ParseException ex) { return new BasicHeader(buffer.toString(), null); } } }; return new DefaultHttpResponseParser(buffer, lineParser, DefaultHttpResponseFactory.INSTANCE, constraints); } }; NHttpMessageWriterFactory<HttpRequest> requestWriterFactory = new DefaultHttpRequestWriterFactory(); // Use a custom connection factory to customize the process of // initialization of outgoing HTTP connections. Beside standard connection // configuration parameters HTTP connection factory can define message // parser / writer routines to be employed by individual connections. NHttpConnectionFactory<ManagedNHttpClientConnection> connFactory = new ManagedNHttpClientConnectionFactory( requestWriterFactory, responseParserFactory, HeapByteBufferAllocator.INSTANCE); // Client HTTP connection objects when fully initialized can be bound to // an arbitrary network socket. The process of network socket initialization, // its connection to a remote address and binding to a local one is controlled // by a connection socket factory. // SSL context for secure connections can be created either based on // system or application specific properties. SSLContext sslcontext = SSLContexts.createSystemDefault(); // Use custom hostname verifier to customize SSL hostname verification. HostnameVerifier hostnameVerifier = new DefaultHostnameVerifier(); // Create a registry of custom connection session strategies for supported // protocol schemes. Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder .<SchemeIOSessionStrategy>create().register("http", NoopIOSessionStrategy.INSTANCE) .register("https", new SSLIOSessionStrategy(sslcontext, hostnameVerifier)).build(); // Use custom DNS resolver to override the system DNS resolution. DnsResolver dnsResolver = new SystemDefaultDnsResolver() { @Override public InetAddress[] resolve(final String host) throws UnknownHostException { if (host.equalsIgnoreCase("myhost")) { return new InetAddress[] { InetAddress.getByAddress(new byte[] { 127, 0, 0, 1 }) }; } else { return super.resolve(host); } } }; // Create I/O reactor configuration IOReactorConfig ioReactorConfig = IOReactorConfig.custom() .setIoThreadCount(Runtime.getRuntime().availableProcessors()).setConnectTimeout(30000) .setSoTimeout(30000).build(); // Create a custom I/O reactort ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(ioReactorConfig); // Create a connection manager with custom configuration. PoolingNHttpClientConnectionManager connManager = new PoolingNHttpClientConnectionManager(ioReactor, connFactory, sessionStrategyRegistry, dnsResolver); // Create message constraints MessageConstraints messageConstraints = MessageConstraints.custom().setMaxHeaderCount(200) .setMaxLineLength(2000).build(); // Create connection configuration ConnectionConfig connectionConfig = ConnectionConfig.custom() .setMalformedInputAction(CodingErrorAction.IGNORE) .setUnmappableInputAction(CodingErrorAction.IGNORE).setCharset(Consts.UTF_8) .setMessageConstraints(messageConstraints).build(); // Configure the connection manager to use connection configuration either // by default or for a specific host. connManager.setDefaultConnectionConfig(connectionConfig); connManager.setConnectionConfig(new HttpHost("somehost", 80), ConnectionConfig.DEFAULT); // Configure total max or per route limits for persistent connections // that can be kept in the pool or leased by the connection manager. connManager.setMaxTotal(100); connManager.setDefaultMaxPerRoute(10); connManager.setMaxPerRoute(new HttpRoute(new HttpHost("somehost", 80)), 20); // Use custom cookie store if necessary. CookieStore cookieStore = new BasicCookieStore(); // Use custom credentials provider if necessary. CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); // Create global request configuration RequestConfig defaultRequestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.DEFAULT) .setExpectContinueEnabled(true) .setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST)) .setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC)).build(); // Create an HttpClient with the given custom dependencies and configuration. CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setConnectionManager(connManager) .setDefaultCookieStore(cookieStore).setDefaultCredentialsProvider(credentialsProvider) // .setProxy(new HttpHost("myproxy", 8080)) .setDefaultRequestConfig(defaultRequestConfig).build(); try { // HttpGet httpget = new HttpGet("http://localhost/"); HttpGet httpget = new HttpGet("https://jdev.jimubox.com/logstash/#/dashboard/elasticsearch/stockNginx"); // Request configuration can be overridden at the request level. // They will take precedence over the one set at the client level. RequestConfig requestConfig = RequestConfig.copy(defaultRequestConfig).setSocketTimeout(5000) .setConnectTimeout(5000).setConnectionRequestTimeout(5000) // .setProxy(new HttpHost("myotherproxy", 8080)) .build(); httpget.setConfig(requestConfig); // Execution context can be customized locally. HttpClientContext localContext = HttpClientContext.create(); // Contextual attributes set the local context level will take // precedence over those set at the client level. localContext.setCookieStore(cookieStore); localContext.setCredentialsProvider(credentialsProvider); System.out.println("Executing request " + httpget.getRequestLine()); httpclient.start(); // Pass local context as a parameter Future<HttpResponse> future = httpclient.execute(httpget, localContext, null); // Please note that it may be unsafe to access HttpContext instance // while the request is still being executed HttpResponse response = future.get(); System.out.println("Response: " + response.getStatusLine()); // Once the request has been executed the local context can // be used to examine updated state and various objects affected // by the request execution. // Last executed request localContext.getRequest(); // Execution route localContext.getHttpRoute(); // Target auth state localContext.getTargetAuthState(); // Proxy auth state localContext.getTargetAuthState(); // Cookie origin localContext.getCookieOrigin(); // Cookie spec used localContext.getCookieSpec(); // User security token localContext.getUserToken(); } finally { httpclient.close(); } }
From source file:org.springframework.integration.splunk.support.SplunkHECWriter.java
@Override public void start() { try {/*from w w w. j a va2 s . c o m*/ this.batchBuffer = Collections.synchronizedList(new LinkedList<String>()); this.lastEventReceivedTime = System.currentTimeMillis(); Registry<SchemeIOSessionStrategy> sslSessionStrategy = RegistryBuilder.<SchemeIOSessionStrategy>create() .register("http", NoopIOSessionStrategy.INSTANCE) .register("https", new SSLIOSessionStrategy(getSSLContext(), HOSTNAME_VERIFIER)).build(); ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(); PoolingNHttpClientConnectionManager cm = new PoolingNHttpClientConnectionManager(ioReactor, sslSessionStrategy); cm.setMaxTotal(getPoolsize()); HttpHost splunk = new HttpHost(getHost(), getPort()); cm.setMaxPerRoute(new HttpRoute(splunk), getPoolsize()); httpClient = HttpAsyncClients.custom().setConnectionManager(cm).build(); uri = new URIBuilder().setScheme(isHttps() ? "https" : "http").setHost(getHost()).setPort(getPort()) .setPath("/services/collector").build(); httpClient.start(); if (isBatchMode()) { new BatchBufferActivityCheckerThread(this).start(); } } catch (Exception e) { } this.running = true; }
From source file:com.networknt.client.Client.java
private CloseableHttpAsyncClient httpAsyncClient() throws ClientException { PoolingNHttpClientConnectionManager connectionManager = new PoolingNHttpClientConnectionManager(ioReactor(), asyncRegistry());/*from ww w . j a v a 2 s. co m*/ Map<String, Object> asyncHttpClientMap = (Map<String, Object>) config.get(ASYNC); connectionManager.setMaxTotal((Integer) asyncHttpClientMap.get(MAX_CONNECTION_TOTAL)); connectionManager.setDefaultMaxPerRoute((Integer) asyncHttpClientMap.get(MAX_CONNECTION_PER_ROUTE)); // Now handle all the specific route defined. Map<String, Object> routeMap = (Map<String, Object>) asyncHttpClientMap.get(ROUTES); Iterator<String> it = routeMap.keySet().iterator(); while (it.hasNext()) { String route = it.next(); Integer maxConnection = (Integer) routeMap.get(route); connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost(route)), maxConnection); } final int timeout = (Integer) asyncHttpClientMap.get(TIMEOUT); RequestConfig config = RequestConfig.custom().setConnectTimeout(timeout).setSocketTimeout(timeout).build(); final long keepAliveMilliseconds = (Integer) asyncHttpClientMap.get(KEEP_ALIVE); return HttpAsyncClientBuilder.create().setConnectionManager(connectionManager) .setKeepAliveStrategy(new ConnectionKeepAliveStrategy() { @Override public long getKeepAliveDuration(HttpResponse response, HttpContext context) { HeaderElementIterator it = new BasicHeaderElementIterator( response.headerIterator(HTTP.CONN_KEEP_ALIVE)); while (it.hasNext()) { HeaderElement he = it.nextElement(); String param = he.getName(); String value = he.getValue(); if (value != null && param.equalsIgnoreCase("timeout")) { try { logger.trace("Use server timeout for keepAliveMilliseconds"); return Long.parseLong(value) * 1000; } catch (NumberFormatException ignore) { } } } //logger.trace("Use keepAliveMilliseconds from config " + keepAliveMilliseconds); return keepAliveMilliseconds; } }).setDefaultRequestConfig(config).build(); }
From source file:com.petalmd.armor.HeaderAwareJestClientFactory.java
protected NHttpClientConnectionManager getAsyncConnectionManager() { PoolingNHttpClientConnectionManager retval; IOReactorConfig ioReactorConfig = IOReactorConfig.custom() .setConnectTimeout(httpClientConfig.getConnTimeout()) .setSoTimeout(httpClientConfig.getReadTimeout()).build(); Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder .<SchemeIOSessionStrategy>create().register("http", httpClientConfig.getHttpIOSessionStrategy()) .register("https", httpClientConfig.getHttpsIOSessionStrategy()).build(); try {//w w w.ja va 2 s . co m retval = new PoolingNHttpClientConnectionManager(new DefaultConnectingIOReactor(ioReactorConfig), sessionStrategyRegistry); } catch (IOReactorException e) { throw new IllegalStateException(e); } final Integer maxTotal = httpClientConfig.getMaxTotalConnection(); if (maxTotal != null) { retval.setMaxTotal(maxTotal); } final Integer defaultMaxPerRoute = httpClientConfig.getDefaultMaxTotalConnectionPerRoute(); if (defaultMaxPerRoute != null) { retval.setDefaultMaxPerRoute(defaultMaxPerRoute); } final Map<HttpRoute, Integer> maxPerRoute = httpClientConfig.getMaxTotalConnectionPerRoute(); for (Map.Entry<HttpRoute, Integer> entry : maxPerRoute.entrySet()) { retval.setMaxPerRoute(entry.getKey(), entry.getValue()); } return retval; }