| /** |
| * 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.camel.component.ssh; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.support.ScheduledPollConsumer; |
| import org.apache.sshd.client.SshClient; |
| |
| public class SshConsumer extends ScheduledPollConsumer { |
| private final SshEndpoint endpoint; |
| |
| private SshClient client; |
| |
| public SshConsumer(SshEndpoint endpoint, Processor processor) { |
| super(endpoint, processor); |
| this.endpoint = endpoint; |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| client = SshClient.setUpDefaultClient(); |
| client.start(); |
| |
| super.doStart(); |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| super.doStop(); |
| |
| if (client != null) { |
| client.stop(); |
| client = null; |
| } |
| } |
| |
| @Override |
| protected int poll() throws Exception { |
| if (!isRunAllowed()) { |
| return 0; |
| } |
| |
| String command = endpoint.getPollCommand(); |
| Exchange exchange = endpoint.createExchange(); |
| |
| String knownHostResource = endpoint.getKnownHostsResource(); |
| if (knownHostResource != null) { |
| client.setServerKeyVerifier(new ResourceBasedSSHKeyVerifier(exchange.getContext(), knownHostResource, |
| endpoint.isFailOnUnknownHost())); |
| } |
| |
| SshResult result = SshHelper.sendExecCommand(exchange.getIn().getHeaders(), command, endpoint, client); |
| |
| exchange.getIn().setBody(result.getStdout()); |
| exchange.getIn().setHeader(SshResult.EXIT_VALUE, result.getExitValue()); |
| exchange.getIn().setHeader(SshResult.STDERR, result.getStderr()); |
| |
| try { |
| // send message to next processor in the route |
| getProcessor().process(exchange); |
| return 1; // number of messages polled |
| } finally { |
| // log exception if an exception occurred and was not handled |
| if (exchange.getException() != null) { |
| getExceptionHandler().handleException("Error processing exchange", exchange, exchange.getException()); |
| } |
| } |
| } |
| } |