[NC-2005] Implemented --p2p-enabled configuration item (#619)

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

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/P2pDisabledAcceptanceTest.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.pantheon.tests.acceptance;
+
+import tech.pegasys.pantheon.tests.acceptance.dsl.AcceptanceTestBase;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.Node;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.cluster.Cluster;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.cluster.ClusterConfiguration;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.cluster.ClusterConfigurationBuilder;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class P2pDisabledAcceptanceTest extends AcceptanceTestBase {
+  private Node node;
+  private Cluster p2pDisabledCluster;
+
+  @Before
+  public void setUp() throws Exception {
+    final ClusterConfiguration clusterConfiguration =
+        new ClusterConfigurationBuilder().setAwaitPeerDiscovery(false).build();
+
+    p2pDisabledCluster = new Cluster(clusterConfiguration, net);
+    node = pantheon.createArchiveNodeWithP2pDisabled("node1");
+    p2pDisabledCluster.start(node);
+  }
+
+  @Override
+  public void tearDownAcceptanceTestBase() {
+    p2pDisabledCluster.stop();
+    super.tearDownAcceptanceTestBase();
+  }
+
+  @Test
+  public void shouldSucceedExecutingUnaffectedJsonRpcCall() {
+    final String input = "0x68656c6c6f20776f726c64";
+    final String expectedHash =
+        "0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad";
+
+    node.verify(web3.sha3(input, expectedHash));
+  }
+
+  @Test
+  public void shouldFailExecutingAffectedJsonRpcCall() {
+    node.verify(net.awaitPeerCountExceptional());
+  }
+}

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/condition/net/AwaitNetPeerCountException.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.pantheon.tests.acceptance.dsl.condition.net;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.catchThrowable;
+
+import tech.pegasys.pantheon.tests.acceptance.dsl.condition.Condition;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.Node;
+import tech.pegasys.pantheon.tests.acceptance.dsl.transaction.net.NetPeerCountTransaction;
+
+public class AwaitNetPeerCountException implements Condition {
+
+  private final NetPeerCountTransaction transaction;
+
+  public AwaitNetPeerCountException(final NetPeerCountTransaction transaction) {
+    this.transaction = transaction;
+  }
+
+  @Override
+  public void verify(final Node node) {
+    final Throwable thrown = catchThrowable(() -> node.execute(transaction));
+    assertThat(thrown).isInstanceOf(RuntimeException.class);
+    assertThat(thrown).hasMessageContaining("P2P has been disabled.");
+  }
+}

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/jsonrpc/Net.java

@@ -14,6 +14,7 @@ package tech.pegasys.pantheon.tests.acceptance.dsl.jsonrpc;
 
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.Condition;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.net.AwaitNetPeerCount;
+import tech.pegasys.pantheon.tests.acceptance.dsl.condition.net.AwaitNetPeerCountException;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.net.ExpectNetVersionConnectionException;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.net.ExpectNetVersionConnectionExceptionWithCause;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.net.ExpectNetVersionIsNotBlank;
@@ -44,4 +45,8 @@ public class Net {
   public Condition netVersionExceptional(final Class<? extends Throwable> cause) {
     return new ExpectNetVersionConnectionExceptionWithCause(transactions.netVersion(), cause);
   }
+
+  public Condition awaitPeerCountExceptional() {
+    return new AwaitNetPeerCountException(transactions.peerCount());
+  }
 }

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/PantheonNode.java

@@ -65,6 +65,7 @@ public class PantheonNode implements Node, NodeConfiguration, RunnableNode, Auto
   private final KeyPair keyPair;
   private final int p2pPort;
   private final Properties portsProperties = new Properties();
+  private final Boolean p2pEnabled;
 
   private final String name;
   private final MiningParameters miningParameters;
@@ -88,7 +89,8 @@ public class PantheonNode implements Node, NodeConfiguration, RunnableNode, Auto
       final PermissioningConfiguration permissioningConfiguration,
       final boolean devMode,
       final GenesisConfigProvider genesisConfigProvider,
-      final int p2pPort)
+      final int p2pPort,
+      final Boolean p2pEnabled)
       throws IOException {
     this.homeDirectory = Files.createTempDirectory("acctest");
     this.keyPair = KeyPairUtil.loadKeyPair(homeDirectory);
@@ -101,6 +103,7 @@ public class PantheonNode implements Node, NodeConfiguration, RunnableNode, Auto
     this.permissioningConfiguration = permissioningConfiguration;
     this.genesisConfigProvider = genesisConfigProvider;
     this.devMode = devMode;
+    this.p2pEnabled = p2pEnabled;
     LOG.info("Created PantheonNode {}", this.toString());
   }
 
@@ -313,6 +316,10 @@ public class PantheonNode implements Node, NodeConfiguration, RunnableNode, Auto
         .collect(Collectors.toList());
   }
 
+  Boolean p2pEnabled() {
+    return p2pEnabled;
+  }
+
   @Override
   public void bootnodes(final List<String> bootnodes) {
     this.bootnodes = bootnodes;
@@ -337,6 +344,7 @@ public class PantheonNode implements Node, NodeConfiguration, RunnableNode, Auto
         .add("p2pPort", p2pPort)
         .add("homeDirectory", homeDirectory)
         .add("keyPair", keyPair)
+        .add("p2pEnabled", p2pEnabled)
         .toString();
   }
 

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/ThreadPantheonNodeRunner.java

@@ -89,6 +89,7 @@ public class ThreadPantheonNodeRunner implements PantheonNodeRunner {
             .metricsSystem(noOpMetricsSystem)
             .metricsConfiguration(node.metricsConfiguration())
             .permissioningConfiguration(node.getPermissioningConfiguration())
+            .p2pEnabled(node.p2pEnabled())
             .build();
 
     nodeExecutor.submit(runner::execute);

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/factory/PantheonFactoryConfiguration.java

@@ -29,6 +29,7 @@ class PantheonFactoryConfiguration {
   private final PermissioningConfiguration permissioningConfiguration;
   private final boolean devMode;
   private final GenesisConfigProvider genesisConfigProvider;
+  private final Boolean p2pEnabled;
 
   PantheonFactoryConfiguration(
       final String name,
@@ -38,7 +39,8 @@ class PantheonFactoryConfiguration {
       final MetricsConfiguration metricsConfiguration,
       final PermissioningConfiguration permissioningConfiguration,
       final boolean devMode,
-      final GenesisConfigProvider genesisConfigProvider) {
+      final GenesisConfigProvider genesisConfigProvider,
+      final Boolean p2pEnabled) {
     this.name = name;
     this.miningParameters = miningParameters;
     this.jsonRpcConfiguration = jsonRpcConfiguration;
@@ -47,6 +49,7 @@ class PantheonFactoryConfiguration {
     this.permissioningConfiguration = permissioningConfiguration;
     this.devMode = devMode;
     this.genesisConfigProvider = genesisConfigProvider;
+    this.p2pEnabled = p2pEnabled;
   }
 
   public String getName() {
@@ -80,4 +83,8 @@ class PantheonFactoryConfiguration {
   public GenesisConfigProvider getGenesisConfigProvider() {
     return genesisConfigProvider;
   }
+
+  public Boolean getP2pEnabled() {
+    return p2pEnabled;
+  }
 }

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/factory/PantheonFactoryConfigurationBuilder.java

@@ -36,6 +36,7 @@ public class PantheonFactoryConfigurationBuilder {
       PermissioningConfiguration.createDefault();
   private boolean devMode = true;
   private GenesisConfigProvider genesisConfigProvider = ignore -> Optional.empty();
+  private Boolean p2pEnabled = true;
 
   public PantheonFactoryConfigurationBuilder setName(final String name) {
     this.name = name;
@@ -107,6 +108,11 @@ public class PantheonFactoryConfigurationBuilder {
     return this;
   }
 
+  public PantheonFactoryConfigurationBuilder setP2pEnabled(final Boolean p2pEnabled) {
+    this.p2pEnabled = p2pEnabled;
+    return this;
+  }
+
   public PantheonFactoryConfiguration build() {
     return new PantheonFactoryConfiguration(
         name,
@@ -116,6 +122,7 @@ public class PantheonFactoryConfigurationBuilder {
         metricsConfiguration,
         permissioningConfiguration,
         devMode,
-        genesisConfigProvider);
+        genesisConfigProvider,
+        p2pEnabled);
   }
 }

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/factory/PantheonNodeFactory.java

@@ -57,7 +57,8 @@ public class PantheonNodeFactory {
             config.getPermissioningConfiguration(),
             config.isDevMode(),
             config.getGenesisConfigProvider(),
-            serverSocket.getLocalPort());
+            serverSocket.getLocalPort(),
+            config.getP2pEnabled());
     serverSocket.close();
 
     return node;
@@ -97,6 +98,16 @@ public class PantheonNodeFactory {
             .build());
   }
 
+  public PantheonNode createArchiveNodeWithP2pDisabled(final String name) throws IOException {
+    return create(
+        new PantheonFactoryConfigurationBuilder()
+            .setName(name)
+            .setP2pEnabled(false)
+            .setJsonRpcConfiguration(jsonRpcConfigWithPermissioning())
+            .webSocketEnabled()
+            .build());
+  }
+
   public PantheonNode createArchiveNodeWithCustomRefreshDelay(
       final String name, final Long refreshDelay) throws IOException {
     WebSocketConfiguration wsConfig = createWebSocketEnabledConfig();

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/AdminPeers.java

@@ -13,9 +13,12 @@
 package tech.pegasys.pantheon.ethereum.jsonrpc.internal.methods;
 
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.JsonRpcRequest;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.results.PeerResult;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 
 import java.util.List;
@@ -45,6 +48,8 @@ public class AdminPeers implements JsonRpcMethod {
           peerDiscoveryAgent.getPeers().stream().map(PeerResult::new).collect(Collectors.toList());
       final JsonRpcResponse result = new JsonRpcSuccessResponse(req.getId(), peers);
       return result;
+    } catch (P2pDisabledException e) {
+      return new JsonRpcErrorResponse(req.getId(), JsonRpcError.P2P_DISABLED);
     } catch (final Exception e) {
       LOG.error("Error processing request: " + req, e);
       throw e;

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/NetPeerCount.java

@@ -13,9 +13,12 @@
 package tech.pegasys.pantheon.ethereum.jsonrpc.internal.methods;
 
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.JsonRpcRequest;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.results.Quantity;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 
 public class NetPeerCount implements JsonRpcMethod {
@@ -32,6 +35,10 @@ public class NetPeerCount implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequest req) {
+    try {
       return new JsonRpcSuccessResponse(req.getId(), Quantity.create(p2pNetwork.getPeers().size()));
+    } catch (P2pDisabledException e) {
+      return new JsonRpcErrorResponse(req.getId(), JsonRpcError.P2P_DISABLED);
+    }
   }
 }

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/permissioning/PermAddNodesToWhitelist.java

@@ -20,6 +20,7 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.peers.DefaultPeer;
 import tech.pegasys.pantheon.ethereum.p2p.permissioning.NodeWhitelistController;
@@ -69,6 +70,8 @@ public class PermAddNodesToWhitelist implements JsonRpcMethod {
       }
     } catch (IllegalArgumentException e) {
       return new JsonRpcErrorResponse(req.getId(), JsonRpcError.NODE_WHITELIST_INVALID_ENTRY);
+    } catch (P2pDisabledException e) {
+      return new JsonRpcErrorResponse(req.getId(), JsonRpcError.P2P_DISABLED);
     } catch (Exception e) {
       return new JsonRpcErrorResponse(req.getId(), JsonRpcError.INTERNAL_ERROR);
     }

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/permissioning/PermGetNodesWhitelist.java

@@ -18,6 +18,7 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.peers.Endpoint;
 import tech.pegasys.pantheon.ethereum.p2p.peers.Peer;
@@ -43,6 +44,7 @@ public class PermGetNodesWhitelist implements JsonRpcMethod {
 
   @Override
   public JsonRpcResponse response(final JsonRpcRequest req) {
+    try {
       if (p2pNetwork.getNodeWhitelistController().nodeWhitelistSet()) {
         List<Peer> nodesWhitelist = p2pNetwork.getNodeWhitelistController().getNodesWhitelist();
 
@@ -53,6 +55,9 @@ public class PermGetNodesWhitelist implements JsonRpcMethod {
       } else {
         return new JsonRpcErrorResponse(req.getId(), JsonRpcError.NODE_WHITELIST_NOT_SET);
       }
+    } catch (P2pDisabledException e) {
+      return new JsonRpcErrorResponse(req.getId(), JsonRpcError.P2P_DISABLED);
+    }
   }
 
   private String buildEnodeURI(final Peer s) {

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/permissioning/PermRemoveNodesFromWhitelist.java

@@ -20,6 +20,7 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.peers.DefaultPeer;
 import tech.pegasys.pantheon.ethereum.p2p.permissioning.NodeWhitelistController;
@@ -69,6 +70,8 @@ public class PermRemoveNodesFromWhitelist implements JsonRpcMethod {
       }
     } catch (IllegalArgumentException e) {
       return new JsonRpcErrorResponse(req.getId(), JsonRpcError.NODE_WHITELIST_INVALID_ENTRY);
+    } catch (P2pDisabledException e) {
+      return new JsonRpcErrorResponse(req.getId(), JsonRpcError.P2P_DISABLED);
     } catch (Exception e) {
       return new JsonRpcErrorResponse(req.getId(), JsonRpcError.INTERNAL_ERROR);
     }

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/response/JsonRpcError.java

@@ -25,6 +25,7 @@ public enum JsonRpcError {
   METHOD_NOT_FOUND(-32601, "Method not found"),
   INVALID_PARAMS(-32602, "Invalid params"),
   INTERNAL_ERROR(-32603, "Internal error"),
+  P2P_DISABLED(-32000, "P2P has been disabled. This functionality is not available."),
 
   // Filter & Subscription Errors
   FILTER_NOT_FOUND(-32000, "Filter not found"),

ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/AdminPeersTest.java

@@ -17,9 +17,12 @@ import static org.mockito.Mockito.when;
 
 import tech.pegasys.pantheon.ethereum.jsonrpc.MockPeerConnection;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.JsonRpcRequest;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.results.PeerResult;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.api.PeerConnection;
 import tech.pegasys.pantheon.ethereum.p2p.wire.PeerInfo;
@@ -83,6 +86,17 @@ public class AdminPeersTest {
     assertThat(response).isEqualToComparingFieldByFieldRecursively(expectedResponse);
   }
 
+  @Test
+  public void shouldFailIfP2pDisabled() {
+    when(p2pNetwork.getPeers()).thenThrow(new P2pDisabledException("P2P disabled."));
+
+    final JsonRpcRequest request = adminPeers();
+    final JsonRpcResponse expectedResponse =
+        new JsonRpcErrorResponse(request.getId(), JsonRpcError.P2P_DISABLED);
+
+    assertThat(adminPeers.response(request)).isEqualToComparingFieldByField(expectedResponse);
+  }
+
   private Collection<PeerConnection> peerList() {
     final PeerInfo peerInfo =
         new PeerInfo(5, "0x0", Collections.emptyList(), 30303, BytesValue.EMPTY);

ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/permissioning/PermAddNodesToWhitelistTest.java

@@ -27,6 +27,7 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.permissioning.NodeWhitelistController;
 
@@ -133,6 +134,19 @@ public class PermAddNodesToWhitelistTest {
     verifyNoMoreInteractions(nodeWhitelistController);
   }
 
+  @Test
+  public void shouldFailWhenP2pDisabled() {
+    when(p2pNetwork.getNodeWhitelistController())
+        .thenThrow(new P2pDisabledException("P2P disabled."));
+
+    final JsonRpcRequest request = buildRequest(Lists.newArrayList(enode1, enode2, enode3));
+    ;
+    final JsonRpcResponse expectedResponse =
+        new JsonRpcErrorResponse(request.getId(), JsonRpcError.P2P_DISABLED);
+
+    assertThat(method.response(request)).isEqualToComparingFieldByField(expectedResponse);
+  }
+
   private JsonRpcRequest buildRequest(final List<String> enodeList) {
     return new JsonRpcRequest("2.0", METHOD_NAME, new Object[] {enodeList});
   }

ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/permissioning/PermGetNodesWhitelistTest.java

@@ -23,6 +23,7 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.peers.DefaultPeer;
 import tech.pegasys.pantheon.ethereum.p2p.peers.Peer;
@@ -120,6 +121,18 @@ public class PermGetNodesWhitelistTest {
     verifyNoMoreInteractions(nodeWhitelistController);
   }
 
+  @Test
+  public void shouldFailWhenP2pDisabled() {
+    when(p2pNetwork.getNodeWhitelistController())
+        .thenThrow(new P2pDisabledException("P2P disabled."));
+
+    final JsonRpcRequest request = buildRequest();
+    final JsonRpcResponse expectedResponse =
+        new JsonRpcErrorResponse(request.getId(), JsonRpcError.P2P_DISABLED);
+
+    assertThat(method.response(request)).isEqualToComparingFieldByField(expectedResponse);
+  }
+
   private JsonRpcRequest buildRequest() {
     return new JsonRpcRequest("2.0", METHOD_NAME, new Object[] {});
   }

ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/permissioning/PermRemoveNodesFromWhitelistTest.java

@@ -27,6 +27,7 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcError;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcErrorResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
 import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+import tech.pegasys.pantheon.ethereum.p2p.P2pDisabledException;
 import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.permissioning.NodeWhitelistController;
 
@@ -123,6 +124,18 @@ public class PermRemoveNodesFromWhitelistTest {
     verifyNoMoreInteractions(nodeWhitelistController);
   }
 
+  @Test
+  public void shouldFailWhenP2pDisabled() {
+    when(p2pNetwork.getNodeWhitelistController())
+        .thenThrow(new P2pDisabledException("P2P disabled."));
+
+    final JsonRpcRequest request = buildRequest(Lists.newArrayList(enode1, enode2, enode3));
+    final JsonRpcResponse expectedResponse =
+        new JsonRpcErrorResponse(request.getId(), JsonRpcError.P2P_DISABLED);
+
+    assertThat(method.response(request)).isEqualToComparingFieldByField(expectedResponse);
+  }
+
   private JsonRpcRequest buildRequest(final List<String> enodeList) {
     return new JsonRpcRequest("2.0", METHOD_NAME, new Object[] {enodeList});
   }

ethereum/p2p/src/main/java/tech/pegasys/pantheon/ethereum/p2p/NoopP2PNetwork.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.pantheon.ethereum.p2p;
+
+import tech.pegasys.pantheon.ethereum.p2p.api.DisconnectCallback;
+import tech.pegasys.pantheon.ethereum.p2p.api.Message;
+import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
+import tech.pegasys.pantheon.ethereum.p2p.api.PeerConnection;
+import tech.pegasys.pantheon.ethereum.p2p.peers.Peer;
+import tech.pegasys.pantheon.ethereum.p2p.permissioning.NodeWhitelistController;
+import tech.pegasys.pantheon.ethereum.p2p.wire.Capability;
+import tech.pegasys.pantheon.ethereum.p2p.wire.PeerInfo;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.util.Collection;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Consumer;
+
+public class NoopP2PNetwork implements P2PNetwork {
+  @Override
+  public Collection<PeerConnection> getPeers() {
+    throw new P2pDisabledException("P2P networking disabled.  Peers list unavailable.");
+  }
+
+  @Override
+  public CompletableFuture<PeerConnection> connect(final Peer peer) {
+    throw new P2pDisabledException("P2P networking disabled.  Unable to connect to network.");
+  }
+
+  @Override
+  public void subscribe(final Capability capability, final Consumer<Message> consumer) {}
+
+  @Override
+  public void subscribeConnect(final Consumer<PeerConnection> consumer) {}
+
+  @Override
+  public void subscribeDisconnect(final DisconnectCallback consumer) {}
+
+  @Override
+  public boolean addMaintainConnectionPeer(final Peer peer) {
+    throw new P2pDisabledException("P2P networking disabled.  Unable to connect to add peer.");
+  }
+
+  @Override
+  public void checkMaintainedConnectionPeers() {}
+
+  @Override
+  public void stop() {}
+
+  @Override
+  public void awaitStop() {}
+
+  @Override
+  public InetSocketAddress getDiscoverySocketAddress() {
+    throw new P2pDisabledException(
+        "P2P networking disabled.  Discovery socket address unavailable.");
+  }
+
+  @Override
+  public PeerInfo getLocalPeerInfo() {
+    throw new P2pDisabledException("P2P networking disabled.  Local peer info unavailable.");
+  }
+
+  @Override
+  public boolean isListening() {
+    return false;
+  }
+
+  @Override
+  public NodeWhitelistController getNodeWhitelistController() {
+    throw new P2pDisabledException("P2P networking disabled.  Node whitelist unavailable.");
+  }
+
+  @Override
+  public void close() throws IOException {}
+
+  @Override
+  public void run() {}
+}

ethereum/p2p/src/main/java/tech/pegasys/pantheon/ethereum/p2p/P2pDisabledException.java

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.pantheon.ethereum.p2p;
+
+public class P2pDisabledException extends RuntimeException {
+  public P2pDisabledException(final String message) {
+    super(message);
+  }
+}

pantheon/src/main/java/tech/pegasys/pantheon/Runner.java

@@ -40,7 +40,6 @@ public class Runner implements AutoCloseable {
   private final ExecutorService exec = Executors.newCachedThreadPool();
 
   private final NetworkRunner networkRunner;
-
   private final Optional<JsonRpcHttpService> jsonRpc;
   private final Optional<WebSocketService> websocketRpc;
   private final Optional<MetricsHttpService> metrics;
@@ -89,6 +88,7 @@ public class Runner implements AutoCloseable {
   public void close() throws Exception {
     networkRunner.stop();
     networkRunner.awaitStop();
+
     exec.shutdown();
     try {
       jsonRpc.ifPresent(service -> service.stop().join());
@@ -109,10 +109,12 @@ public class Runner implements AutoCloseable {
 
   private void writePantheonPortsToFile() {
     final Properties properties = new Properties();
+
     if (networkRunner.getNetwork().isListening()) {
       properties.setProperty("discovery", String.valueOf(getP2pUdpPort()));
       properties.setProperty("p2p", String.valueOf(getP2pTcpPort()));
     }
+
     if (getJsonRpcPort().isPresent()) {
       properties.setProperty("json-rpc", String.valueOf(getJsonRpcPort().get()));
     }

pantheon/src/main/java/tech/pegasys/pantheon/RunnerBuilder.java

@@ -39,6 +39,8 @@ import tech.pegasys.pantheon.ethereum.jsonrpc.websocket.subscription.pending.Pen
 import tech.pegasys.pantheon.ethereum.jsonrpc.websocket.subscription.syncing.SyncingSubscriptionService;
 import tech.pegasys.pantheon.ethereum.mainnet.ProtocolSchedule;
 import tech.pegasys.pantheon.ethereum.p2p.NetworkRunner;
+import tech.pegasys.pantheon.ethereum.p2p.NoopP2PNetwork;
+import tech.pegasys.pantheon.ethereum.p2p.api.P2PNetwork;
 import tech.pegasys.pantheon.ethereum.p2p.api.ProtocolManager;
 import tech.pegasys.pantheon.ethereum.p2p.config.DiscoveryConfiguration;
 import tech.pegasys.pantheon.ethereum.p2p.config.NetworkingConfiguration;
@@ -73,6 +75,7 @@ public class RunnerBuilder {
 
   private Vertx vertx;
   private PantheonController<?> pantheonController;
+  private boolean p2pEnabled = true;
   private boolean discovery;
   private Collection<?> bootstrapPeers;
   private String discoveryHost;
@@ -96,6 +99,11 @@ public class RunnerBuilder {
     return this;
   }
 
+  public RunnerBuilder p2pEnabled(final boolean p2pEnabled) {
+    this.p2pEnabled = p2pEnabled;
+    return this;
+  }
+
   public RunnerBuilder discovery(final boolean discovery) {
     this.discovery = discovery;
     return this;
@@ -213,7 +221,8 @@ public class RunnerBuilder {
             .protocolManagers(protocolManagers)
             .subProtocols(subProtocols)
             .network(
-                caps ->
+                p2pEnabled
+                    ? caps ->
                         new NettyP2PNetwork(
                             vertx,
                             keyPair,
@@ -222,7 +231,8 @@ public class RunnerBuilder {
                             PeerRequirement.aggregateOf(protocolManagers),
                             peerBlacklist,
                             metricsSystem,
-                        nodeWhitelistController))
+                            nodeWhitelistController)
+                    : caps -> new NoopP2PNetwork())
             .metricsSystem(metricsSystem)
             .build();
 
@@ -245,7 +255,7 @@ public class RunnerBuilder {
               context,
               protocolSchedule,
               pantheonController,
-              networkRunner,
+              networkRunner.getNetwork(),
               synchronizer,
               transactionPool,
               miningCoordinator,
@@ -267,7 +277,7 @@ public class RunnerBuilder {
               context,
               protocolSchedule,
               pantheonController,
-              networkRunner,
+              networkRunner.getNetwork(),
               synchronizer,
               transactionPool,
               miningCoordinator,
@@ -326,7 +336,7 @@ public class RunnerBuilder {
       final ProtocolContext<?> context,
       final ProtocolSchedule<?> protocolSchedule,
       final PantheonController<?> pantheonController,
-      final NetworkRunner networkRunner,
+      final P2PNetwork network,
       final Synchronizer synchronizer,
       final TransactionPool transactionPool,
       final MiningCoordinator miningCoordinator,
@@ -339,7 +349,7 @@ public class RunnerBuilder {
         new JsonRpcMethodsFactory()
             .methods(
                 PantheonInfo.version(),
-                networkRunner.getNetwork(),
+                network,
                 context.getBlockchain(),
                 context.getWorldStateArchive(),
                 synchronizer,

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

@@ -156,6 +156,15 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
   )
   private final File nodePrivateKeyFile = null;
 
+  // Completely disables p2p within Pantheon.
+  @Option(
+    names = {"--p2p-enabled"},
+    description = "Enable/disable all p2p functionality (default: {DEFAULT-VALUE})",
+    arity = "0..1"
+  )
+  @SuppressWarnings("FieldCanBeFinal")
+  private Boolean p2pEnabled = true;
+
   // Boolean option to indicate if peers should NOT be discovered, default to false indicates that
   // the peers should be discovered by default.
   //
@@ -497,6 +506,11 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
       Configurator.setAllLevels("", logLevel);
     }
 
+    if (!p2pEnabled && (bootstrapNodes != null && !bootstrapNodes.isEmpty())) {
+      throw new ParameterException(
+          new CommandLine(this), "Unable to specify bootnodes if p2p is disabled.");
+    }
+
     //noinspection ConstantConditions
     if (isMiningEnabled && coinbase == null) {
       throw new ParameterException(
@@ -516,6 +530,7 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
 
     synchronize(
         buildController(),
+        p2pEnabled,
         noPeerDiscovery,
         ethNetworkConfig.getBootNodes(),
         maxPeers,
@@ -627,6 +642,7 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
   // Blockchain synchronisation from peers.
   private void synchronize(
       final PantheonController<?> controller,
+      final boolean p2pEnabled,
       final boolean noPeerDiscovery,
       final Collection<?> bootstrapNodes,
       final int maxPeers,
@@ -642,6 +658,7 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
         runnerBuilder
             .vertx(Vertx.vertx())
             .pantheonController(controller)
+            .p2pEnabled(p2pEnabled)
             // BEWARE: Peer discovery boolean must be inverted as it's negated in the options !
             .discovery(!noPeerDiscovery)
             .bootstrapPeers(bootstrapNodes)

pantheon/src/test/java/tech/pegasys/pantheon/cli/PantheonCommandTest.java

@@ -122,6 +122,7 @@ public class PantheonCommandTest extends CommandTestAbstract {
     when(mockRunnerBuilder.discoveryHost(anyString())).thenReturn(mockRunnerBuilder);
     when(mockRunnerBuilder.discoveryPort(anyInt())).thenReturn(mockRunnerBuilder);
     when(mockRunnerBuilder.maxPeers(anyInt())).thenReturn(mockRunnerBuilder);
+    when(mockRunnerBuilder.p2pEnabled(anyBoolean())).thenReturn(mockRunnerBuilder);
     when(mockRunnerBuilder.jsonRpcConfiguration(any())).thenReturn(mockRunnerBuilder);
     when(mockRunnerBuilder.webSocketConfiguration(any())).thenReturn(mockRunnerBuilder);
     when(mockRunnerBuilder.permissioningConfiguration(any())).thenReturn(mockRunnerBuilder);
@@ -528,6 +529,35 @@ public class PantheonCommandTest extends CommandTestAbstract {
     assertThat(commandOutput.toString()).isEmpty();
   }
 
+  @Test
+  public void p2pEnabledOptionFlagDefaultTrue() {
+    parseCommand("--p2p-enabled");
+
+    verify(mockRunnerBuilder.p2pEnabled(eq(true))).build();
+
+    assertThat(commandOutput.toString()).isEmpty();
+    assertThat(commandErrorOutput.toString()).isEmpty();
+  }
+
+  @Test
+  public void p2pEnabledOptionValueMustBeUsed() {
+    parseCommand("--p2p-enabled", "false");
+
+    verify(mockRunnerBuilder.p2pEnabled(eq(false))).build();
+
+    assertThat(commandOutput.toString()).isEmpty();
+    assertThat(commandErrorOutput.toString()).isEmpty();
+  }
+
+  @Test
+  public void p2pEnabledOptionFalseValueCannotAlsoHaveBootnodesSpecified() {
+    parseCommand("--p2p-enabled", "false", "--bootnodes", String.join(",", validENodeStrings));
+
+    assertThat(commandOutput.toString()).isEmpty();
+    assertThat(commandErrorOutput.toString())
+        .contains("Unable to specify bootnodes if p2p is disabled.");
+  }
+
   @Test
   public void discoveryOptionMustBeUsed() {
     parseCommand("--no-discovery");

pantheon/src/test/resources/everything_config.toml

@@ -14,6 +14,7 @@ logging="INFO"
 node-private-key="./path/to/privateKey"
 
 # P2P network
+p2p-enabled=true
 no-discovery=true
 bootnodes=[
   "enode://6f8a80d14311c39f35f516fa664deaaaa13e85b2f7493f37f6144d86991ec012937307647bd3b9a82abe2974e1407241d54947bbb39763a4cac9f77166ad92a0@192.168.0.1:4567",