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Reverse proxy and send transaction signing (Consensys#4)
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81 changes: 81 additions & 0 deletions
81
ethfirewall/src/main/java/tech/pegasys/ethfirewall/Runner.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| /* | ||
| * 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.ethfirewall; | ||
|
|
||
| import tech.pegasys.ethfirewall.jsonrpcproxy.JsonRpcHttpService; | ||
| import tech.pegasys.ethfirewall.jsonrpcproxy.PassThroughHandler; | ||
| import tech.pegasys.ethfirewall.jsonrpcproxy.RequestMapper; | ||
| import tech.pegasys.ethfirewall.jsonrpcproxy.TransactionBodyProvider; | ||
| import tech.pegasys.ethfirewall.jsonrpcproxy.TransactionSigner; | ||
|
|
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| import io.vertx.core.AsyncResult; | ||
| import io.vertx.core.Vertx; | ||
| import io.vertx.core.http.HttpClient; | ||
| import io.vertx.core.http.HttpClientOptions; | ||
| import io.vertx.core.http.HttpServerOptions; | ||
| import io.vertx.ext.web.RoutingContext; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| public class Runner { | ||
|
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| private static final Logger LOG = LoggerFactory.getLogger(Runner.class); | ||
| private TransactionSigner transactionSigner; | ||
| private HttpClientOptions clientOptions; | ||
| private HttpServerOptions serverOptions; | ||
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| public Runner( | ||
| final TransactionSigner transactionSigner, | ||
| final HttpClientOptions clientOptions, | ||
| final HttpServerOptions serverOptions) { | ||
| this.transactionSigner = transactionSigner; | ||
| this.clientOptions = clientOptions; | ||
| this.serverOptions = serverOptions; | ||
| } | ||
|
|
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| public void start() { | ||
| // NOTE: Starting vertx spawns daemon threads, meaning the app may complete, but not terminate. | ||
| final Vertx vertx = Vertx.vertx(); | ||
| final RequestMapper requestMapper = createRequestMapper(vertx, transactionSigner); | ||
| final JsonRpcHttpService httpService = new JsonRpcHttpService(serverOptions, requestMapper); | ||
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| vertx.deployVerticle(httpService, this::handleDeployResult); | ||
| } | ||
|
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| private RequestMapper createRequestMapper( | ||
| final Vertx vertx, final TransactionSigner transactionSigner) { | ||
|
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| final HttpClient downStreamConnection = vertx.createHttpClient(clientOptions); | ||
| final PassThroughHandler passThroughHandler = | ||
| new PassThroughHandler(downStreamConnection, RoutingContext::getBody); | ||
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| final RequestMapper requestMapper = new RequestMapper(passThroughHandler); | ||
|
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| final TransactionBodyProvider sendTransactionHandler = | ||
| new TransactionBodyProvider(transactionSigner); | ||
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| requestMapper.addHandler( | ||
| "eth_sendTransaction", | ||
| new PassThroughHandler(downStreamConnection, sendTransactionHandler)); | ||
|
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| return requestMapper; | ||
| } | ||
|
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| private void handleDeployResult(final AsyncResult<?> result) { | ||
| if (result.succeeded()) { | ||
| LOG.info("Deployment id is: {}", result.result()); | ||
| } else { | ||
| LOG.warn("Deployment failed! ", result.cause()); | ||
| } | ||
| } | ||
| } |
21 changes: 21 additions & 0 deletions
21
ethfirewall/src/main/java/tech/pegasys/ethfirewall/jsonrpcproxy/BodyProvider.java
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| @@ -0,0 +1,21 @@ | ||
| /* | ||
| * 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.ethfirewall.jsonrpcproxy; | ||
|
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| import io.vertx.core.buffer.Buffer; | ||
| import io.vertx.ext.web.RoutingContext; | ||
|
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| @FunctionalInterface | ||
| public interface BodyProvider { | ||
| Buffer getBody(RoutingContext context); | ||
| } |
91 changes: 91 additions & 0 deletions
91
ethfirewall/src/main/java/tech/pegasys/ethfirewall/jsonrpcproxy/JsonRpcHttpService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| /* | ||
| * 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.ethfirewall.jsonrpcproxy; | ||
|
|
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| import io.netty.handler.codec.http.HttpHeaderValues; | ||
| import io.vertx.core.AbstractVerticle; | ||
| import io.vertx.core.Future; | ||
| import io.vertx.core.Handler; | ||
| import io.vertx.core.http.HttpMethod; | ||
| import io.vertx.core.http.HttpServer; | ||
| import io.vertx.core.http.HttpServerOptions; | ||
| import io.vertx.ext.web.Router; | ||
| import io.vertx.ext.web.RoutingContext; | ||
| import io.vertx.ext.web.handler.BodyHandler; | ||
| import io.vertx.ext.web.handler.ResponseContentTypeHandler; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
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| public class JsonRpcHttpService extends AbstractVerticle { | ||
|
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| private static final Logger LOG = LoggerFactory.getLogger(JsonRpcHttpService.class); | ||
| private static final String JSON = HttpHeaderValues.APPLICATION_JSON.toString(); | ||
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| private final RequestMapper requestHandlerMapper; | ||
| private final HttpServerOptions serverOptions; | ||
| private HttpServer httpServer = null; | ||
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| public JsonRpcHttpService( | ||
| final HttpServerOptions serverOptions, final RequestMapper requestHandlerMapper) { | ||
| this.serverOptions = serverOptions; | ||
| this.requestHandlerMapper = requestHandlerMapper; | ||
| } | ||
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| @Override | ||
| public void start(final Future<Void> startFuture) { | ||
| httpServer = vertx.createHttpServer(serverOptions); | ||
| httpServer | ||
| .requestHandler(router()) | ||
| .listen( | ||
| result -> { | ||
| if (result.succeeded()) { | ||
| LOG.info("Json RPC server started on {}", httpServer.actualPort()); | ||
| startFuture.complete(); | ||
| } else { | ||
| LOG.error("Json RPC server failed to listen", result.cause()); | ||
| startFuture.fail(result.cause()); | ||
| } | ||
| }); | ||
| } | ||
|
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| @Override | ||
| public void stop(final Future<Void> stopFuture) { | ||
| httpServer.close( | ||
| result -> { | ||
| if (result.succeeded()) { | ||
| stopFuture.complete(); | ||
| } else { | ||
| stopFuture.fail(result.cause()); | ||
| } | ||
| }); | ||
| } | ||
|
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| private Router router() { | ||
| final Router router = Router.router(vertx); | ||
| router | ||
| .route(HttpMethod.POST, "/") | ||
| .produces(JSON) | ||
| .handler(BodyHandler.create()) | ||
| .handler(ResponseContentTypeHandler.create()) | ||
| .failureHandler(new LogErrorHandler()) | ||
| .handler(this::handleJsonRpc); | ||
| router.route().handler(context -> {}); | ||
| return router; | ||
| } | ||
|
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| private void handleJsonRpc(final RoutingContext routingContext) { | ||
| final Handler<RoutingContext> handler = | ||
| requestHandlerMapper.getMatchingHandler(routingContext.getBodyAsJson()); | ||
| handler.handle(routingContext); | ||
| } | ||
| } |
35 changes: 35 additions & 0 deletions
35
ethfirewall/src/main/java/tech/pegasys/ethfirewall/jsonrpcproxy/LogErrorHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * 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.ethfirewall.jsonrpcproxy; | ||
|
|
||
| import io.vertx.core.Handler; | ||
| import io.vertx.ext.web.RoutingContext; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
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| /** Failure handler that records log details of the problem. */ | ||
| public class LogErrorHandler implements Handler<RoutingContext> { | ||
| private static final Logger LOG = LoggerFactory.getLogger(LogErrorHandler.class); | ||
|
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| @Override | ||
| public void handle(final RoutingContext failureContext) { | ||
|
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| if (failureContext.failed()) { | ||
| LOG.error( | ||
| String.format("Failed sendRequest: %s", failureContext.request().absoluteURI()), | ||
| failureContext.failure()); | ||
| } else { | ||
| LOG.warn("Error handler triggered without any propagated failure"); | ||
| } | ||
| } | ||
| } |
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