public SampleResult sample()

in src/protocol/native/src/main/java/org/apache/jmeter/protocol/system/SystemSampler.java [101:193]
84 lines of code
15 McCabe index (conditional complexity)

    public SampleResult sample(Entry entry) {
        SampleResult results = new SampleResult();
        results.setDataType(SampleResult.TEXT);
        results.setSampleLabel(getName());

        String command = getCommand();
        Arguments args = getArguments();
        Arguments environment = getEnvironmentVariables();
        boolean checkReturnCode = getCheckReturnCode();
        int expectedReturnCode = getExpectedReturnCode();
        List<String> cmds = new ArrayList<>(args.getArgumentCount() + 1);
        StringBuilder cmdLine = new StringBuilder((null == command) ? "" : command);
        cmds.add(command);
        for (int i=0;i<args.getArgumentCount();i++) {
            Argument arg = args.getArgument(i);
            cmds.add(arg.getValue());
            cmdLine.append(" ");
            cmdLine.append(cmds.get(i+1));
        }

        Map<String,String> env = new HashMap<>();
        for (int i=0;i<environment.getArgumentCount();i++) {
            Argument arg = environment.getArgument(i);
            env.put(arg.getName(), arg.getValue());
        }

        File directory;
        if(StringUtils.isEmpty(getDirectory())) {
            directory = new File(FileServer.getDefaultBase());
            if(log.isDebugEnabled()) {
                log.debug("Using default directory:"+directory.getAbsolutePath());
            }
        } else {
            directory = new File(getDirectory());
            if(log.isDebugEnabled()) {
                log.debug("Using configured directory:"+directory.getAbsolutePath());
            }
        }

        if(log.isDebugEnabled()) {
            log.debug("Will run : "+cmdLine + " using working directory:"+directory.getAbsolutePath()+
                    " with environment: "+env);
        }

        results.setSamplerData("Working Directory: "+directory.getAbsolutePath()+
                "\nEnvironment: "+env+
                "\nExecuting: " + cmdLine.toString());

        SystemCommand nativeCommand = null;
        try {
            nativeCommand = new SystemCommand(directory, getTimeout(), 0, env, getStdin(), getStdout(), getStderr());
            results.sampleStart();
            int returnCode = nativeCommand.run(cmds);
            results.sampleEnd();
            results.setResponseCode(Integer.toString(returnCode));
            if(log.isDebugEnabled()) {
                log.debug("Ran : "+cmdLine + " using working directory: "+directory.getAbsolutePath()+
                        " with execution environment: "+nativeCommand.getExecutionEnvironment()+ " => " + returnCode);
            }

            if (checkReturnCode && (returnCode != expectedReturnCode)) {
                results.setSuccessful(false);
                results.setResponseMessage("Unexpected return code.  Expected ["+expectedReturnCode+"]. Actual ["+returnCode+"].");
            } else {
                results.setSuccessful(true);
                results.setResponseMessage("OK");
            }
        } catch (IOException ioe) {
            results.sampleEnd();
            results.setSuccessful(false);
            results.setResponseCode("500"); //$NON-NLS-1$
            results.setResponseMessage("Exception occurred whilst executing system call: " + ioe);
        } catch (InterruptedException ie) {
            results.sampleEnd();
            results.setSuccessful(false);
            results.setResponseCode("500"); //$NON-NLS-1$
            results.setResponseMessage("System Sampler interrupted whilst executing system call: " + ie);
            Thread.currentThread().interrupt();
        } catch (TimeoutException e) {
            results.sampleEnd();
            results.setSuccessful(false);
            results.setResponseCode("500");
            results.setResponseMessage(e.getMessage());
        }

        if (nativeCommand != null) {
            @SuppressWarnings("DefaultCharset")
            final byte[] responseData = nativeCommand.getOutResult().getBytes();
            results.setResponseData(responseData); // default charset is deliberate here
        }

        return results;
    }