Enable CLI config for privacy precompiled contract address (#653)

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

ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/core/Address.java

@@ -39,7 +39,8 @@ public class Address extends DelegatingBytesValue {
   public static final Address ALTBN128_PAIRING = Address.precompiled(8);
 
   // Last address that can be generated for a pre-compiled contract
-  public static final Address DEFAULT_PRIVACY = Address.precompiled(Byte.MAX_VALUE - 1);
+  public static final Integer PRIVACY = Byte.MAX_VALUE - 1;
+  public static final Address DEFAULT_PRIVACY = Address.precompiled(PRIVACY);
 
   protected Address(final BytesValue bytes) {
     super(bytes);
@@ -103,6 +104,10 @@ public class Address extends DelegatingBytesValue {
     return new Address(BytesValue.wrap(address));
   }
 
+  public static Address privacyPrecompiled(final int value) {
+    return precompiled(value);
+  }
+
   /**
    * Address of the created contract.
    *

ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/core/PrivacyParameters.java

@@ -16,10 +16,10 @@ import java.io.File;
 import java.net.URI;
 
 public class PrivacyParameters {
-
   private static final String ORION_URL = "http://localhost:8888";
   public static final URI DEFAULT_ORION_URL = URI.create(ORION_URL);
 
+  private Integer privacyAddress;
   private boolean enabled;
   private String url;
   private File publicKey;
@@ -36,6 +36,7 @@ public class PrivacyParameters {
     final PrivacyParameters config = new PrivacyParameters();
     config.setEnabled(false);
     config.setUrl(ORION_URL);
+    config.setPrivacyAddress(Address.PRIVACY);
     return config;
   }
 
@@ -59,4 +60,12 @@ public class PrivacyParameters {
   public void setEnabled(final boolean enabled) {
     this.enabled = enabled;
   }
+
+  public Integer getPrivacyAddress() {
+    return privacyAddress;
+  }
+
+  public void setPrivacyAddress(final Integer privacyAddress) {
+    this.privacyAddress = privacyAddress;
+  }
 }

ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/mainnet/MainnetPrecompiledContractRegistries.java

@@ -64,8 +64,11 @@ public abstract class MainnetPrecompiledContractRegistries {
   public static PrecompileContractRegistry appendPrivacy(
       final PrecompileContractRegistry registry,
       final PrecompiledContractConfiguration precompiledContractConfiguration) {
+    Address address =
+        Address.privacyPrecompiled(
+            precompiledContractConfiguration.getPrivacyParameters().getPrivacyAddress());
     registry.put(
-        Address.DEFAULT_PRIVACY,
+        address,
         new PrivacyPrecompiledContract(
             precompiledContractConfiguration.getGasCalculator(),
             precompiledContractConfiguration.getPrivacyParameters()));

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

@@ -498,6 +498,13 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
   )
   private final Boolean privacyEnabled = false;
 
+  @Option(
+    names = {"--privacy-precompiled-address"},
+    description =
+        "The address to which the privacy pre-compiled contract will be mapped to (default: ${DEFAULT-VALUE})"
+  )
+  private final Integer privacyPrecompiledAddress = Address.PRIVACY;
+
   public PantheonCommand(
       final BlockImporter blockImporter,
       final RunnerBuilder runnerBuilder,
@@ -686,6 +693,7 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
     privacyParameters.setEnabled(privacyEnabled);
     privacyParameters.setUrl(privacyUrl.toString());
     privacyParameters.setPublicKey(privacyPublicKeyFile);
+    privacyParameters.setPrivacyAddress(privacyPrecompiledAddress);
     return privacyParameters;
   }
 

pantheon/src/test/resources/everything_config.toml

@@ -72,3 +72,4 @@ nodes-whitelist=["all"]
 privacy-url="http://127.0.0.1:8888"
 privacy-public-key-file="./pubKey.pub"
 privacy-enabled=false
+privacy-precompiled-address=9