Add some basic support for http proxy settings to MultiLangDaemon

src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/KinesisClientLibConfiguration.java

@@ -14,6 +14,7 @@
  */
 package com.amazonaws.services.kinesis.clientlibrary.lib.worker;
 
+import java.net.ProxySelector;
 import java.util.Set;
 
 import com.amazonaws.ClientConfiguration;

src/main/java/com/amazonaws/services/kinesis/multilang/MultiLangDaemonConfig.java

@@ -16,6 +16,12 @@ package com.amazonaws.services.kinesis.multilang;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.List;
 import java.util.Properties;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -23,6 +29,11 @@ import java.util.concurrent.Executors;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import com.amazonaws.ClientConfiguration;
+import com.amazonaws.Protocol;
+import com.amazonaws.regions.Region;
+import com.amazonaws.regions.RegionUtils;
+import com.amazonaws.regions.ServiceAbbreviations;
 import com.amazonaws.services.kinesis.clientlibrary.config.KinesisClientLibConfigurator;
 import com.amazonaws.services.kinesis.clientlibrary.lib.worker.KinesisClientLibConfiguration;
 
@@ -92,6 +103,12 @@ public class MultiLangDaemonConfig {
         String processingLanguage = properties.getProperty(PROP_PROCESSING_LANGUAGE);
 
         kinesisClientLibConfig = configurator.getConfiguration(properties);
+
+        kinesisClientLibConfig
+                .withKinesisClientConfig(buildClientConfig(ServiceAbbreviations.Kinesis, kinesisClientLibConfig))
+                .withCloudWatchClientConfig(buildClientConfig(ServiceAbbreviations.CloudWatch, kinesisClientLibConfig))
+                .withDynamoDBClientConfig(buildClientConfig(ServiceAbbreviations.Dynamodb, kinesisClientLibConfig));
+
         executorService = buildExecutorService(properties);
         recordProcessorFactory = new MultiLangRecordProcessorFactory(executableName, executorService);
 
@@ -100,6 +117,29 @@ public class MultiLangDaemonConfig {
         prepare(processingLanguage);
     }
 
+    private ClientConfiguration buildClientConfig(final String serviceName, KinesisClientLibConfiguration config)
+    {
+        try
+        {
+            Region region = RegionUtils.getRegion(config.getRegionName());
+            String serviceEndpoint = serviceName + "." + region.getName() + "." + region.getDomain();
+            ClientConfiguration clientConfig = new ClientConfiguration();
+            List<Proxy> proxies = ProxySelector.getDefault().select(new URI(Protocol.HTTPS.toString(),
+                    serviceEndpoint, null, null));
+
+            Proxy proxy = proxies.isEmpty() ? Proxy.NO_PROXY : proxies.get(0);
+            if (proxy.type() == Proxy.Type.HTTP) {
+                InetSocketAddress addr = (InetSocketAddress)proxy.address();
+                clientConfig = clientConfig.withProxyHost(addr.getHostString()).withProxyPort(addr.getPort());
+            }
+            return clientConfig;
+        }
+        catch(URISyntaxException e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
     private void prepare(String processingLanguage) {
         // Ensure the JVM will refresh the cached IP values of AWS resources (e.g. service endpoints).
         java.security.Security.setProperty("networkaddress.cache.ttl", "60");