| /** |
| * 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.exec.impl; |
| |
| import java.io.File; |
| import java.io.InputStream; |
| import java.util.List; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Message; |
| import org.apache.camel.component.exec.ExecBinding; |
| import org.apache.camel.component.exec.ExecCommand; |
| import org.apache.camel.component.exec.ExecEndpoint; |
| import org.apache.camel.component.exec.ExecResult; |
| import org.apache.camel.util.ObjectHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.camel.component.exec.impl.ExecParseUtils.splitToWhiteSpaceSeparatedTokens; |
| |
| /** |
| * Default implementation of {@link ExecBinding}. |
| * |
| * @see DefaultExecBinding#writeOutputInMessage(Message, ExecResult) |
| */ |
| public class DefaultExecBinding implements ExecBinding { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(DefaultExecBinding.class); |
| |
| @SuppressWarnings("unchecked") |
| public ExecCommand readInput(Exchange exchange, ExecEndpoint endpoint) { |
| ObjectHelper.notNull(exchange, "exchange"); |
| ObjectHelper.notNull(endpoint, "endpoint"); |
| |
| // do not convert args as we do that manually later |
| Object args = exchange.getIn().removeHeader(EXEC_COMMAND_ARGS); |
| String cmd = getAndRemoveHeader(exchange.getIn(), EXEC_COMMAND_EXECUTABLE, endpoint.getExecutable(), String.class); |
| String dir = getAndRemoveHeader(exchange.getIn(), EXEC_COMMAND_WORKING_DIR, endpoint.getWorkingDir(), String.class); |
| long timeout = getAndRemoveHeader(exchange.getIn(), EXEC_COMMAND_TIMEOUT, endpoint.getTimeout(), Long.class); |
| String outFilePath = getAndRemoveHeader(exchange.getIn(), EXEC_COMMAND_OUT_FILE, endpoint.getOutFile(), String.class); |
| boolean useStderrOnEmptyStdout = getAndRemoveHeader(exchange.getIn(), EXEC_USE_STDERR_ON_EMPTY_STDOUT, endpoint.isUseStderrOnEmptyStdout(), Boolean.class); |
| InputStream input = exchange.getIn().getBody(InputStream.class); |
| |
| // try to convert args to list at fist |
| List<String> argsList = exchange.getContext().getTypeConverter().convertTo(List.class, exchange, args); |
| if (argsList == null) { |
| // no we could not do that, then parse it as a string to a list |
| String s = endpoint.getArgs(); |
| if (args != null) { |
| // use args from header instead from endpoint |
| s = exchange.getContext().getTypeConverter().convertTo(String.class, exchange, args); |
| } |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Parsing argument String to a List: " + s); |
| } |
| argsList = splitToWhiteSpaceSeparatedTokens(s); |
| } |
| |
| File outFile = outFilePath == null ? null : new File(outFilePath); |
| return new ExecCommand(cmd, argsList, dir, timeout, input, outFile, useStderrOnEmptyStdout); |
| } |
| |
| public void writeOutput(Exchange exchange, ExecResult result) { |
| ObjectHelper.notNull(exchange, "exchange"); |
| ObjectHelper.notNull(result, "result"); |
| |
| if (exchange.getPattern().isOutCapable()) { |
| writeOutputInMessage(exchange.getOut(), result); |
| exchange.getOut().getHeaders().putAll(exchange.getIn().getHeaders()); |
| } else { |
| writeOutputInMessage(exchange.getIn(), result); |
| } |
| } |
| |
| /** |
| * Write the {@link ExecResult} in the message body. Write the stderr and |
| * the exit value for convenience in the message headers. <br> |
| * The stdout and/or resultFile should be accessible using a converter or |
| * using the result object directly. |
| * |
| * @param message a Camel message |
| * @param result an {@link ExecResult} instance |
| */ |
| protected void writeOutputInMessage(Message message, ExecResult result) { |
| message.setHeader(EXEC_STDERR, result.getStderr()); |
| message.setHeader(EXEC_EXIT_VALUE, result.getExitValue()); |
| message.setBody(result); |
| } |
| |
| /** |
| * Gets and removes the <code> <code>headerName</code> header form the input |
| * <code>message</code> (the header will not be propagated) |
| */ |
| protected <T> T getAndRemoveHeader(Message message, String headerName, T defaultValue, Class<T> headerType) { |
| T h = message.getHeader(headerName, defaultValue, headerType); |
| message.removeHeader(headerName); |
| return h; |
| } |
| } |