| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.avro.tool; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.PrintStream; |
| import java.io.File; |
| import java.net.URI; |
| import java.util.List; |
| |
| import joptsimple.OptionParser; |
| import joptsimple.OptionSet; |
| import joptsimple.OptionSpec; |
| |
| import org.apache.avro.Protocol; |
| import org.apache.avro.Schema; |
| import org.apache.avro.Protocol.Message; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.io.DatumWriter; |
| import org.apache.avro.io.EncoderFactory; |
| import org.apache.avro.ipc.Ipc; |
| import org.apache.avro.ipc.generic.GenericRequestor; |
| |
| import org.codehaus.jackson.JsonEncoding; |
| import org.codehaus.jackson.JsonFactory; |
| import org.codehaus.jackson.JsonGenerator; |
| |
| /** |
| * Sends a single RPC message. |
| */ |
| public class RpcSendTool implements Tool { |
| @Override |
| public String getName() { |
| return "rpcsend"; |
| } |
| |
| @Override |
| public String getShortDescription() { |
| return "Sends a single RPC message."; |
| } |
| |
| @Override |
| public int run(InputStream in, PrintStream out, PrintStream err, |
| List<String> args) throws Exception { |
| OptionParser p = new OptionParser(); |
| OptionSpec<String> file = |
| p.accepts("file", "Data file containing request parameters.") |
| .withRequiredArg() |
| .ofType(String.class); |
| OptionSpec<String> data = |
| p.accepts("data", "JSON-encoded request parameters.") |
| .withRequiredArg() |
| .ofType(String.class); |
| OptionSet opts = p.parse(args.toArray(new String[0])); |
| args = (List<String>)opts.nonOptionArguments(); |
| |
| if (args.size() != 3) { |
| err.println("Usage: uri protocol_file message_name (-data d | -file f)"); |
| p.printHelpOn(err); |
| return 1; |
| } |
| |
| URI uri = new URI(args.get(0)); |
| Protocol protocol = Protocol.parse(new File(args.get(1))); |
| String messageName = args.get(2); |
| Message message = protocol.getMessages().get(messageName); |
| if (message == null) { |
| err.println(String.format("No message named '%s' found in protocol '%s'.", |
| messageName, protocol)); |
| return 1; |
| } |
| |
| Object datum; |
| if (data.value(opts) != null) { |
| datum = Util.jsonToGenericDatum(message.getRequest(), data.value(opts)); |
| } else if (file.value(opts) != null) { |
| datum = Util.datumFromFile(message.getRequest(), file.value(opts)); |
| } else { |
| err.println("One of -data or -file must be specified."); |
| return 1; |
| } |
| |
| GenericRequestor client = |
| new GenericRequestor(protocol, Ipc.createTransceiver(uri)); |
| Object response = client.request(message.getName(), datum); |
| dumpJson(out, message.getResponse(), response); |
| return 0; |
| } |
| |
| private void dumpJson(PrintStream out, Schema schema, Object datum) |
| throws IOException { |
| DatumWriter<Object> writer = new GenericDatumWriter<Object>(schema); |
| JsonGenerator g = |
| new JsonFactory().createJsonGenerator(out, JsonEncoding.UTF8); |
| g.useDefaultPrettyPrinter(); |
| writer.write(datum, EncoderFactory.get().jsonEncoder(schema, g)); |
| g.flush(); |
| out.println(); |
| out.flush(); |
| } |
| |
| } |