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Initial PoC for RPC end points via the plugin mechanism.
re-implementation of PegaSysEng/pantheon#1909 Signed-off-by: Antony Denyer <git@antonydenyer.co.uk> Co-authored-by: Danno Ferrin <danno.ferrin@gmail.com>
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78 changes: 78 additions & 0 deletions
78
...test-plugins/src/main/java/org/hyperledger/besu/plugins/TestRpcEndpointServicePlugin.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * Copyright 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. | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.hyperledger.besu.plugins; | ||
|
|
||
| import static com.google.common.base.Preconditions.checkArgument; | ||
|
|
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| import org.hyperledger.besu.plugin.BesuContext; | ||
| import org.hyperledger.besu.plugin.BesuPlugin; | ||
| import org.hyperledger.besu.plugin.services.RpcEndpointService; | ||
| import org.hyperledger.besu.plugin.services.rpc.PluginRpcRequest; | ||
|
|
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| import java.util.concurrent.atomic.AtomicReference; | ||
|
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| import com.google.auto.service.AutoService; | ||
|
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| @AutoService(BesuPlugin.class) | ||
| public class TestRpcEndpointServicePlugin implements BesuPlugin { | ||
|
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| static class Bean { | ||
| final String value; | ||
|
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| Bean(final String value) { | ||
| this.value = value; | ||
| } | ||
|
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| public String getValue() { | ||
| return value; | ||
| } | ||
| } | ||
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| private final AtomicReference<String> storage = new AtomicReference<>("InitialValue"); | ||
|
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| private String replaceValue(final PluginRpcRequest request) { | ||
| checkArgument(request.getParams().length == 1, "Only one parameter accepted"); | ||
| return storage.getAndSet(request.getParams()[0].toString()); | ||
| } | ||
|
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| private String[] replaceValueArray(final PluginRpcRequest request) { | ||
| return new String[] {replaceValue(request)}; | ||
| } | ||
|
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| private Bean replaceValueBean(final PluginRpcRequest request) { | ||
| return new Bean(replaceValue(request)); | ||
| } | ||
|
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| @Override | ||
| public void register(final BesuContext context) { | ||
| context | ||
| .getService(RpcEndpointService.class) | ||
| .ifPresent( | ||
| rpcEndpointService -> { | ||
| rpcEndpointService.registerRPCEndpoint( | ||
| "unitTests", "replaceValue", this::replaceValue); | ||
| rpcEndpointService.registerRPCEndpoint( | ||
| "unitTests", "replaceValueArray", this::replaceValueArray); | ||
| rpcEndpointService.registerRPCEndpoint( | ||
| "unitTests", "replaceValueBean", this::replaceValueBean); | ||
| }); | ||
| } | ||
|
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| @Override | ||
| public void start() {} | ||
|
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| @Override | ||
| public void stop() {} | ||
| } |
99 changes: 99 additions & 0 deletions
99
...test/java/org/hyperledger/besu/tests/acceptance/plugins/RpcEndpointServicePluginTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| * Copyright 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. | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.hyperledger.besu.tests.acceptance.plugins; | ||
|
|
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| import static org.assertj.core.api.Assertions.assertThat; | ||
|
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| import org.hyperledger.besu.config.JsonUtil; | ||
| import org.hyperledger.besu.tests.acceptance.dsl.AcceptanceTestBase; | ||
| import org.hyperledger.besu.tests.acceptance.dsl.node.BesuNode; | ||
|
|
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| import java.io.IOException; | ||
| import java.util.Collections; | ||
|
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| import com.fasterxml.jackson.databind.node.ObjectNode; | ||
| import okhttp3.MediaType; | ||
| import okhttp3.OkHttpClient; | ||
| import okhttp3.Request; | ||
| import okhttp3.RequestBody; | ||
| import org.junit.Before; | ||
| import org.junit.Test; | ||
|
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| public class RpcEndpointServicePluginTest extends AcceptanceTestBase { | ||
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| private BesuNode node; | ||
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| private OkHttpClient client; | ||
| protected static final MediaType JSON = MediaType.parse("application/json; charset=utf-8"); | ||
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| @Before | ||
| public void setUp() throws Exception { | ||
| node = | ||
| besu.createPluginsNode( | ||
| "node1", Collections.singletonList("testPlugins"), Collections.emptyList()); | ||
| cluster.start(node); | ||
| client = new OkHttpClient(); | ||
| } | ||
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| @Test | ||
| public void rpcWorking() throws IOException { | ||
| final String firstCall = "FirstCall"; | ||
| final String secondCall = "SecondCall"; | ||
| final String thirdCall = "ThirdCall"; | ||
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| ObjectNode resultJson = callTestMethod("unitTests_replaceValue", firstCall); | ||
| assertThat(resultJson.get("result").asText()).isEqualTo("InitialValue"); | ||
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| resultJson = callTestMethod("unitTests_replaceValueArray", secondCall); | ||
| assertThat(resultJson.get("result").get(0).asText()).isEqualTo(firstCall); | ||
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| resultJson = callTestMethod("unitTests_replaceValueBean", thirdCall); | ||
| assertThat(resultJson.get("result").get("value").asText()).isEqualTo(secondCall); | ||
| } | ||
|
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| @Test | ||
| public void throwsError() throws IOException { | ||
| ObjectNode resultJson = callTestMethod("unitTests_replaceValue", null); | ||
| assertThat(resultJson.get("error").get("message").asText()).isEqualTo("Internal error"); | ||
| } | ||
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| private ObjectNode callTestMethod(final String method, final String value) throws IOException { | ||
| final String resultString = | ||
| client | ||
| .newCall( | ||
| new Request.Builder() | ||
| .post( | ||
| RequestBody.create( | ||
| "{\"jsonrpc\":\"2.0\",\"method\":\"" | ||
| + method | ||
| + "\",\"params\":[" | ||
| + "\"" | ||
| + value | ||
| + "\"" | ||
| + "],\"id\":33}", | ||
| JSON)) | ||
| .url( | ||
| "http://" | ||
| + node.getHostName() | ||
| + ":" | ||
| + node.getJsonRpcSocketPort().get() | ||
| + "/") | ||
| .build()) | ||
| .execute() | ||
| .body() | ||
| .string(); | ||
| return JsonUtil.objectNodeFromString(resultString); | ||
| } | ||
| } |
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50 changes: 50 additions & 0 deletions
50
besu/src/main/java/org/hyperledger/besu/services/RpcEndpointServiceImpl.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /* | ||
| * Copyright 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. | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.hyperledger.besu.services; | ||
|
|
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| import static com.google.common.base.Preconditions.checkArgument; | ||
| import static com.google.common.base.Preconditions.checkNotNull; | ||
|
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| import org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.JsonRpcMethod; | ||
| import org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.PluginJsonRpcMethod; | ||
| import org.hyperledger.besu.plugin.services.RpcEndpointService; | ||
| import org.hyperledger.besu.plugin.services.rpc.PluginRpcRequest; | ||
|
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.function.Function; | ||
| import java.util.stream.Collectors; | ||
|
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| public class RpcEndpointServiceImpl implements RpcEndpointService { | ||
| private final Map<String, Function<PluginRpcRequest, ?>> rpcMethods = new HashMap<>(); | ||
|
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| @Override | ||
| public <T> void registerRPCEndpoint( | ||
| final String namespace, | ||
| final String functionName, | ||
| final Function<PluginRpcRequest, T> function) { | ||
| checkArgument(namespace.matches("\\p{Alnum}+"), "Namespace must be only alpha numeric"); | ||
| checkArgument(functionName.matches("\\p{Alnum}+"), "Function Name must be only alpha numeric"); | ||
| checkNotNull(function); | ||
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| rpcMethods.put(namespace + "_" + functionName, function); | ||
| } | ||
|
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| public Map<String, ? extends JsonRpcMethod> getPluginMethods() { | ||
| return rpcMethods.entrySet().stream() | ||
| .map(entry -> new PluginJsonRpcMethod(entry.getKey(), entry.getValue())) | ||
| .collect(Collectors.toMap(PluginJsonRpcMethod::getName, e -> e)); | ||
| } | ||
| } |
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