Add --ropsten command line argument (#197)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

ethereum/p2p/src/main/java/tech/pegasys/pantheon/ethereum/p2p/config/DiscoveryConfiguration.java

@@ -44,6 +44,13 @@ public class DiscoveryConfiguration {
                   "enode://b6b28890b006743680c52e64e0d16db57f28124885595fa03a562be1d2bf0f3a1da297d56b13da25fb992888fd556d4c1a27b1f39d531bde7de1921c90061cc6@159.89.28.211:30303")
               .map(DefaultPeer::fromURI)
               .collect(toList()));
+  public static List<Peer> ROPSTEN_BOOTSTRAP_NODES =
+      Collections.unmodifiableList(
+          Stream.of(
+                  "enode://6332792c4a00e3e4ee0926ed89e0d27ef985424d97b6a45bf0f23e51f0dcb5e66b875777506458aea7af6f9e4ffb69f43f3778ee73c81ed9d34c51c4b16b0b0f@52.232.243.152:30303",
+                  "enode://94c15d1b9e2fe7ce56e458b9a3b672ef11894ddedd0c6f247e0f1d3487f52b66208fb4aeb8179fce6e3a749ea93ed147c37976d67af557508d199d9594c35f09@192.81.208.223:30303")
+              .map(DefaultPeer::fromURI)
+              .collect(toList()));
 
   private boolean active = true;
   private String bindHost = "0.0.0.0";

pantheon/src/main/java/tech/pegasys/pantheon/cli/EthNetworkConfig.java

@@ -12,10 +12,9 @@
  */
 package tech.pegasys.pantheon.cli;
 
-import static tech.pegasys.pantheon.controller.CliquePantheonController.RINKEBY_NETWORK_ID;
-import static tech.pegasys.pantheon.controller.MainnetPantheonController.MAINNET_NETWORK_ID;
 import static tech.pegasys.pantheon.ethereum.p2p.config.DiscoveryConfiguration.MAINNET_BOOTSTRAP_NODES;
 import static tech.pegasys.pantheon.ethereum.p2p.config.DiscoveryConfiguration.RINKEBY_BOOTSTRAP_NODES;
+import static tech.pegasys.pantheon.ethereum.p2p.config.DiscoveryConfiguration.ROPSTEN_BOOTSTRAP_NODES;
 
 import java.net.URI;
 import java.net.URISyntaxException;
@@ -26,8 +25,12 @@ import com.google.common.base.Preconditions;
 import com.google.common.io.Resources;
 
 public class EthNetworkConfig {
+  private static final int MAINNET_NETWORK_ID = 1;
+  private static final int RINKEBY_NETWORK_ID = 4;
+  private static final int ROPSTEN_NETWORK_ID = 3;
   private static final String MAINNET_GENESIS = "mainnet.json";
   private static final String RINKEBY_GENESIS = "rinkeby.json";
+  private static final String ROPSTEN_GENESIS = "ropsten.json";
   private final URI genesisConfig;
   private final int networkId;
   private final Collection<?> bootNodes;
@@ -94,6 +97,11 @@ public class EthNetworkConfig {
     return new EthNetworkConfig(genesisConfig, RINKEBY_NETWORK_ID, RINKEBY_BOOTSTRAP_NODES);
   }
 
+  public static EthNetworkConfig ropsten() {
+    final URI genesisConfig = jsonConfigURI(ROPSTEN_GENESIS);
+    return new EthNetworkConfig(genesisConfig, ROPSTEN_NETWORK_ID, ROPSTEN_BOOTSTRAP_NODES);
+  }
+
   private static URI jsonConfigURI(final String resourceName) {
     try {
       return Resources.getResource(resourceName).toURI();

pantheon/src/main/java/tech/pegasys/pantheon/cli/PantheonCommand.java

@@ -230,6 +230,12 @@ public class PantheonCommand implements Runnable {
   )
   private final Boolean rinkeby = false;
 
+  @Option(
+    names = {"--ropsten"},
+    description = "Use the Ropsten test network (default: ${DEFAULT-VALUE})"
+  )
+  private final Boolean ropsten = false;
+
   @Option(
     names = {"--p2p-listen"},
     paramLabel = MANDATORY_HOST_AND_PORT_FORMAT_HELP,
@@ -410,6 +416,11 @@ public class PantheonCommand implements Runnable {
               + "or specify the beneficiary of mining (via --miner-coinbase <Address>)");
       return;
     }
+    if (ropsten && rinkeby) {
+      System.out.println(
+          "Unable to connect to multiple networks simultaneously. Remove one of --ropsten or --rinkeby");
+      return;
+    }
     final EthNetworkConfig ethNetworkConfig = ethNetworkConfig();
     synchronize(
         buildController(),
@@ -562,8 +573,14 @@ public class PantheonCommand implements Runnable {
   }
 
   private EthNetworkConfig ethNetworkConfig() {
-    final EthNetworkConfig predefinedNetworkConfig =
-        rinkeby ? EthNetworkConfig.rinkeby() : EthNetworkConfig.mainnet();
+    final EthNetworkConfig predefinedNetworkConfig;
+    if (rinkeby) {
+      predefinedNetworkConfig = EthNetworkConfig.rinkeby();
+    } else if (ropsten) {
+      predefinedNetworkConfig = EthNetworkConfig.ropsten();
+    } else {
+      predefinedNetworkConfig = EthNetworkConfig.mainnet();
+    }
     return updateNetworkConfig(predefinedNetworkConfig);
   }
 

pantheon/src/main/java/tech/pegasys/pantheon/controller/CliquePantheonController.java

@@ -61,7 +61,6 @@ import io.vertx.core.json.JsonObject;
 import org.apache.logging.log4j.Logger;
 
 public class CliquePantheonController implements PantheonController<CliqueContext> {
-  public static int RINKEBY_NETWORK_ID = 4;
   private static final Logger LOG = getLogger();
   private final GenesisConfig<CliqueContext> genesisConfig;
   private final ProtocolContext<CliqueContext> context;

pantheon/src/main/java/tech/pegasys/pantheon/controller/MainnetPantheonController.java

@@ -58,7 +58,6 @@ import org.apache.logging.log4j.Logger;
 public class MainnetPantheonController implements PantheonController<Void> {
 
   private static final Logger LOG = LogManager.getLogger();
-  public static final int MAINNET_NETWORK_ID = 1;
 
   private final GenesisConfig<Void> genesisConfig;
   private final ProtocolContext<Void> protocolContext;