Examples with LogLevel org.pentaho.di.core.logging.LogLevel used on opensource projects

Example 11 with LogLevel

use of org.pentaho.di.core.logging.LogLevel in project pentaho-kettle by pentaho.

the class AbstractMessages method get.

public String get(String key, String... params) {
    String res = null;
    String notFoundKey = "!" + key + "!";
    for (String pName : packageNames) {
        // Kettle will generate an exception message if there is a
        // failed message search. Since we are searching over multiple
        // packages, we don't want this message generated unless we
        // cannot find the message in any of the packages.
        LogLevel logLevel = DefaultLogLevel.getLogLevel();
        DefaultLogLevel.setLogLevel(LogLevel.NOTHING);
        try {
            res = BaseMessages.getString(pName, key);
        } finally {
            DefaultLogLevel.setLogLevel(logLevel);
        }
        if (!res.equals(notFoundKey)) {
            return res;
        }
    }
    // its normal error.
    return BaseMessages.getString(packageNames.get(0), key);
}

Example 12 with LogLevel

use of org.pentaho.di.core.logging.LogLevel in project pentaho-kettle by pentaho.

the class BasePluginType method getTranslation.

protected static String getTranslation(String string, String packageName, String altPackageName, Class<?> resourceClass) {
    if (string == null) {
        return null;
    }
    if (string.startsWith("i18n:")) {
        String[] parts = string.split(":");
        if (parts.length != 3) {
            return string;
        } else {
            return BaseMessages.getString(parts[1], parts[2]);
        }
    } else {
        // Try the default package name
        // 
        String translation;
        if (!Utils.isEmpty(packageName)) {
            LogLevel oldLogLevel = DefaultLogLevel.getLogLevel();
            // avoid i18n messages for missing locale
            // 
            DefaultLogLevel.setLogLevel(LogLevel.BASIC);
            translation = BaseMessages.getString(packageName, string, resourceClass);
            if (translation.startsWith("!") && translation.endsWith("!")) {
                translation = BaseMessages.getString(PKG, string, resourceClass);
            }
            // restore loglevel, when the last alternative fails, log it when loglevel is detailed
            // 
            DefaultLogLevel.setLogLevel(oldLogLevel);
            if (!Utils.isEmpty(altPackageName)) {
                if (translation.startsWith("!") && translation.endsWith("!")) {
                    translation = BaseMessages.getString(altPackageName, string, resourceClass);
                }
            }
        } else {
            // Translations are not supported, simply keep the original text.
            // 
            translation = string;
        }
        return translation;
    }
}

Example 13 with LogLevel

use of org.pentaho.di.core.logging.LogLevel in project pentaho-kettle by pentaho.

the class JobEntryJob method execute.

@Override
public Result execute(Result result, int nr) throws KettleException {
    result.setEntryNr(nr);
    LogChannelFileWriter logChannelFileWriter = null;
    LogLevel jobLogLevel = parentJob.getLogLevel();
    // Set Embedded NamedCluter MetatStore Provider Key so that it can be passed to VFS
    if (parentJobMeta.getNamedClusterEmbedManager() != null) {
        parentJobMeta.getNamedClusterEmbedManager().passEmbeddedMetastoreKey(this, parentJobMeta.getEmbeddedMetastoreProviderKey());
    }
    if (setLogfile) {
        String realLogFilename = environmentSubstitute(getLogFilename());
        // if we do not have one, we must fail
        if (Utils.isEmpty(realLogFilename)) {
            logError(BaseMessages.getString(PKG, "JobJob.Exception.LogFilenameMissing"));
            result.setNrErrors(1);
            result.setResult(false);
            return result;
        }
        // create parent folder?
        if (!createParentFolder(realLogFilename)) {
            result.setNrErrors(1);
            result.setResult(false);
            return result;
        }
        try {
            logChannelFileWriter = new LogChannelFileWriter(this.getLogChannelId(), KettleVFS.getFileObject(realLogFilename), setAppendLogfile);
            logChannelFileWriter.startLogging();
        } catch (KettleException e) {
            logError("Unable to open file appender for file [" + getLogFilename() + "] : " + e.toString());
            logError(Const.getStackTracker(e));
            result.setNrErrors(1);
            result.setResult(false);
            return result;
        }
        jobLogLevel = logFileLevel;
    }
    try {
        // First load the job, outside of the loop...
        if (parentJob.getJobMeta() != null) {
            // reset the internal variables again.
            // Maybe we should split up the variables even more like in UNIX shells.
            // The internal variables need to be reset to be able use them properly
            // in 2 sequential sub jobs.
            parentJob.getJobMeta().setInternalKettleVariables();
        }
        // 
        switch(specificationMethod) {
            case REPOSITORY_BY_NAME:
                if (log.isDetailed()) {
                    logDetailed("Loading job from repository : [" + directory + " : " + environmentSubstitute(jobname) + "]");
                }
                break;
            case FILENAME:
                if (log.isDetailed()) {
                    logDetailed("Loading job from XML file : [" + environmentSubstitute(filename) + "]");
                }
                break;
            case REPOSITORY_BY_REFERENCE:
                if (log.isDetailed()) {
                    logDetailed("Loading job from repository by reference : [" + jobObjectId + "]");
                }
                break;
            default:
                break;
        }
        JobMeta jobMeta = getJobMeta(rep, this);
        // 
        if (jobMeta == null) {
            throw new KettleException("Unable to load the job: please specify the name and repository directory OR a filename");
        }
        verifyRecursiveExecution(parentJob, jobMeta);
        int iteration = 0;
        String[] args1 = arguments;
        // no arguments? Check the parent jobs arguments
        if (args1 == null || args1.length == 0) {
            args1 = parentJob.getArguments();
        }
        copyVariablesFrom(parentJob);
        setParentVariableSpace(parentJob);
        // 
        // For the moment only do variable translation at the start of a job, not
        // for every input row (if that would be switched on)
        // 
        String[] args = null;
        if (args1 != null) {
            args = new String[args1.length];
            for (int idx = 0; idx < args1.length; idx++) {
                args[idx] = environmentSubstitute(args1[idx]);
            }
        }
        RowMetaAndData resultRow = null;
        boolean first = true;
        List<RowMetaAndData> rows = new ArrayList<RowMetaAndData>(result.getRows());
        while ((first && !execPerRow) || (execPerRow && rows != null && iteration < rows.size() && result.getNrErrors() == 0)) {
            first = false;
            // 
            if (execPerRow) {
                result.getRows().clear();
            }
            if (rows != null && execPerRow) {
                resultRow = rows.get(iteration);
            } else {
                resultRow = null;
            }
            NamedParams namedParam = new NamedParamsDefault();
            // 
            if (paramsFromPrevious) {
                String[] parentParameters = parentJob.listParameters();
                for (int idx = 0; idx < parentParameters.length; idx++) {
                    String par = parentParameters[idx];
                    String def = parentJob.getParameterDefault(par);
                    String val = parentJob.getParameterValue(par);
                    String des = parentJob.getParameterDescription(par);
                    namedParam.addParameterDefinition(par, def, des);
                    namedParam.setParameterValue(par, val);
                }
            }
            // 
            if (parameters != null) {
                for (int idx = 0; idx < parameters.length; idx++) {
                    if (!Utils.isEmpty(parameters[idx])) {
                        // 
                        if (Const.indexOfString(parameters[idx], namedParam.listParameters()) < 0) {
                            // We have a parameter
                            try {
                                namedParam.addParameterDefinition(parameters[idx], "", "Job entry runtime");
                            } catch (DuplicateParamException e) {
                                // Should never happen
                                // 
                                logError("Duplicate parameter definition for " + parameters[idx]);
                            }
                        }
                        if (Utils.isEmpty(Const.trim(parameterFieldNames[idx]))) {
                            namedParam.setParameterValue(parameters[idx], Const.NVL(environmentSubstitute(parameterValues[idx]), ""));
                        } else {
                            // something filled in, in the field column...
                            // 
                            String value = "";
                            if (resultRow != null) {
                                value = resultRow.getString(parameterFieldNames[idx], "");
                            }
                            namedParam.setParameterValue(parameters[idx], value);
                        }
                    }
                }
            }
            Result oneResult = new Result();
            List<RowMetaAndData> sourceRows = null;
            if (execPerRow) {
                if (argFromPrevious) {
                    // Copy the input row to the (command line) arguments
                    args = null;
                    if (resultRow != null) {
                        args = new String[resultRow.size()];
                        for (int i = 0; i < resultRow.size(); i++) {
                            args[i] = resultRow.getString(i, null);
                        }
                    }
                } else {
                    // Just pass a single row
                    List<RowMetaAndData> newList = new ArrayList<RowMetaAndData>();
                    newList.add(resultRow);
                    sourceRows = newList;
                }
                if (paramsFromPrevious) {
                    if (parameters != null) {
                        for (int idx = 0; idx < parameters.length; idx++) {
                            if (!Utils.isEmpty(parameters[idx])) {
                                // We have a parameter
                                if (Utils.isEmpty(Const.trim(parameterFieldNames[idx]))) {
                                    namedParam.setParameterValue(parameters[idx], Const.NVL(environmentSubstitute(parameterValues[idx]), ""));
                                } else {
                                    String fieldValue = "";
                                    if (resultRow != null) {
                                        fieldValue = resultRow.getString(parameterFieldNames[idx], "");
                                    }
                                    // Get the value from the input stream
                                    namedParam.setParameterValue(parameters[idx], Const.NVL(fieldValue, ""));
                                }
                            }
                        }
                    }
                }
            } else {
                if (argFromPrevious) {
                    // Only put the first Row on the arguments
                    args = null;
                    if (resultRow != null) {
                        args = new String[resultRow.size()];
                        for (int i = 0; i < resultRow.size(); i++) {
                            args[i] = resultRow.getString(i, null);
                        }
                    }
                } else {
                    // Keep it as it was...
                    sourceRows = result.getRows();
                }
                if (paramsFromPrevious) {
                    if (parameters != null) {
                        for (int idx = 0; idx < parameters.length; idx++) {
                            if (!Utils.isEmpty(parameters[idx])) {
                                // We have a parameter
                                if (Utils.isEmpty(Const.trim(parameterFieldNames[idx]))) {
                                    namedParam.setParameterValue(parameters[idx], Const.NVL(environmentSubstitute(parameterValues[idx]), ""));
                                } else {
                                    String fieldValue = "";
                                    if (resultRow != null) {
                                        fieldValue = resultRow.getString(parameterFieldNames[idx], "");
                                    }
                                    // Get the value from the input stream
                                    namedParam.setParameterValue(parameters[idx], Const.NVL(fieldValue, ""));
                                }
                            }
                        }
                    }
                }
            }
            boolean doFallback = true;
            SlaveServer remoteSlaveServer = null;
            JobExecutionConfiguration executionConfiguration = new JobExecutionConfiguration();
            if (!Utils.isEmpty(runConfiguration)) {
                log.logBasic(BaseMessages.getString(PKG, "JobJob.RunConfig.Message"), runConfiguration);
                runConfiguration = environmentSubstitute(runConfiguration);
                executionConfiguration.setRunConfiguration(runConfiguration);
                try {
                    ExtensionPointHandler.callExtensionPoint(log, KettleExtensionPoint.SpoonTransBeforeStart.id, new Object[] { executionConfiguration, parentJob.getJobMeta(), jobMeta, rep });
                    if (!executionConfiguration.isExecutingLocally() && !executionConfiguration.isExecutingRemotely()) {
                        result.setResult(true);
                        return result;
                    }
                    remoteSlaveServer = executionConfiguration.getRemoteServer();
                    doFallback = false;
                } catch (KettleException e) {
                    log.logError(e.getMessage(), getName());
                    result.setNrErrors(1);
                    result.setResult(false);
                    return result;
                }
            }
            if (doFallback) {
                // 
                if (!Utils.isEmpty(remoteSlaveServerName)) {
                    String realRemoteSlaveServerName = environmentSubstitute(remoteSlaveServerName);
                    remoteSlaveServer = parentJob.getJobMeta().findSlaveServer(realRemoteSlaveServerName);
                    if (remoteSlaveServer == null) {
                        throw new KettleException(BaseMessages.getString(PKG, "JobTrans.Exception.UnableToFindRemoteSlaveServer", realRemoteSlaveServerName));
                    }
                }
            }
            if (remoteSlaveServer == null) {
                // Local execution...
                // 
                // Create a new job
                // 
                job = new Job(rep, jobMeta, this);
                job.setParentJob(parentJob);
                job.setLogLevel(jobLogLevel);
                job.shareVariablesWith(this);
                job.setInternalKettleVariables(this);
                job.copyParametersFrom(jobMeta);
                job.setInteractive(parentJob.isInteractive());
                if (job.isInteractive()) {
                    job.getJobEntryListeners().addAll(parentJob.getJobEntryListeners());
                }
                // Pass the socket repository all around.
                // 
                job.setSocketRepository(parentJob.getSocketRepository());
                // Set the parameters calculated above on this instance.
                // 
                job.clearParameters();
                String[] parameterNames = job.listParameters();
                for (int idx = 0; idx < parameterNames.length; idx++) {
                    // Grab the parameter value set in the job entry
                    // 
                    String thisValue = namedParam.getParameterValue(parameterNames[idx]);
                    if (!Utils.isEmpty(thisValue)) {
                        // Set the value as specified by the user in the job entry
                        // 
                        job.setParameterValue(parameterNames[idx], thisValue);
                    } else {
                        // 
                        if (isPassingAllParameters()) {
                            String parentValue = parentJob.getParameterValue(parameterNames[idx]);
                            if (!Utils.isEmpty(parentValue)) {
                                job.setParameterValue(parameterNames[idx], parentValue);
                            }
                        }
                    }
                }
                job.activateParameters();
                // Set the source rows we calculated above...
                // 
                job.setSourceRows(sourceRows);
                // Don't forget the logging...
                job.beginProcessing();
                // Link the job with the sub-job
                parentJob.getJobTracker().addJobTracker(job.getJobTracker());
                // Link both ways!
                job.getJobTracker().setParentJobTracker(parentJob.getJobTracker());
                if (parentJob.getJobMeta().isBatchIdPassed()) {
                    job.setPassedBatchId(parentJob.getBatchId());
                }
                job.setArguments(args);
                // 
                for (DelegationListener delegationListener : parentJob.getDelegationListeners()) {
                    // TODO: copy some settings in the job execution configuration, not strictly needed
                    // but the execution configuration information is useful in case of a job re-start
                    // 
                    delegationListener.jobDelegationStarted(job, new JobExecutionConfiguration());
                }
                JobEntryJobRunner runner = new JobEntryJobRunner(job, result, nr, log);
                Thread jobRunnerThread = new Thread(runner);
                // PDI-6518
                // added UUID to thread name, otherwise threads do share names if jobs entries are executed in parallel in a
                // parent job
                // if that happens, contained transformations start closing each other's connections
                jobRunnerThread.setName(Const.NVL(job.getJobMeta().getName(), job.getJobMeta().getFilename()) + " UUID: " + UUID.randomUUID().toString());
                jobRunnerThread.start();
                // 
                while (!runner.isFinished() && !parentJob.isStopped()) {
                    try {
                        Thread.sleep(0, 1);
                    } catch (InterruptedException e) {
                    // Ignore
                    }
                }
                // if the parent-job was stopped, stop the sub-job too...
                if (parentJob.isStopped()) {
                    job.stopAll();
                    // Wait until finished!
                    runner.waitUntilFinished();
                }
                oneResult = runner.getResult();
            } else {
                // Make sure we can parameterize the slave server connection
                // 
                remoteSlaveServer.shareVariablesWith(this);
                // Remote execution...
                // 
                JobExecutionConfiguration jobExecutionConfiguration = new JobExecutionConfiguration();
                // lightClone() because rows are
                jobExecutionConfiguration.setPreviousResult(result.lightClone());
                // overwritten in next line.
                jobExecutionConfiguration.getPreviousResult().setRows(sourceRows);
                jobExecutionConfiguration.setArgumentStrings(args);
                jobExecutionConfiguration.setVariables(this);
                jobExecutionConfiguration.setRemoteServer(remoteSlaveServer);
                jobExecutionConfiguration.setRepository(rep);
                jobExecutionConfiguration.setLogLevel(jobLogLevel);
                jobExecutionConfiguration.setPassingExport(passingExport);
                jobExecutionConfiguration.setExpandingRemoteJob(expandingRemoteJob);
                for (String param : namedParam.listParameters()) {
                    String defValue = namedParam.getParameterDefault(param);
                    String value = namedParam.getParameterValue(param);
                    jobExecutionConfiguration.getParams().put(param, Const.NVL(value, defValue));
                }
                if (parentJob.getJobMeta().isBatchIdPassed()) {
                    jobExecutionConfiguration.setPassedBatchId(parentJob.getBatchId());
                }
                // Send the XML over to the slave server
                // Also start the job over there...
                // 
                String carteObjectId = null;
                try {
                    carteObjectId = Job.sendToSlaveServer(jobMeta, jobExecutionConfiguration, rep, metaStore);
                } catch (KettleException e) {
                    // Perhaps the job exists on the remote server, carte is down, etc.
                    // This is an abort situation, stop the parent job...
                    // We want this in case we are running in parallel. The other job
                    // entries can stop running now.
                    // 
                    parentJob.stopAll();
                    // 
                    throw e;
                }
                // Now start the monitoring...
                // 
                SlaveServerJobStatus jobStatus = null;
                while (!parentJob.isStopped() && waitingToFinish) {
                    try {
                        jobStatus = remoteSlaveServer.getJobStatus(jobMeta.getName(), carteObjectId, 0);
                        if (jobStatus.getResult() != null) {
                            // The job is finished, get the result...
                            // 
                            oneResult = jobStatus.getResult();
                            break;
                        }
                    } catch (Exception e1) {
                        logError("Unable to contact slave server [" + remoteSlaveServer + "] to verify the status of job [" + jobMeta.getName() + "]", e1);
                        oneResult.setNrErrors(1L);
                        // Stop looking too, chances are too low the server will
                        break;
                    // come back on-line
                    }
                    // sleep for 1 second
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                    // Ignore
                    }
                }
                // Write log from carte to file
                if (setLogfile && jobStatus != null) {
                    String logFromCarte = jobStatus.getLoggingString();
                    if (!Utils.isEmpty(logFromCarte)) {
                        FileObject logfile = logChannelFileWriter.getLogFile();
                        OutputStream logFileOutputStream = null;
                        try {
                            logFileOutputStream = KettleVFS.getOutputStream(logfile, setAppendLogfile);
                            logFileOutputStream.write(logFromCarte.getBytes());
                            logFileOutputStream.flush();
                        } catch (Exception e) {
                            logError("There was an error logging to file '" + logfile + "'", e);
                        } finally {
                            try {
                                if (logFileOutputStream != null) {
                                    logFileOutputStream.close();
                                    logFileOutputStream = null;
                                }
                            } catch (Exception e) {
                                logError("There was an error closing log file file '" + logfile + "'", e);
                            }
                        }
                    }
                }
                if (!waitingToFinish) {
                    // Since the job was posted successfully, the result is true...
                    // 
                    oneResult = new Result();
                    oneResult.setResult(true);
                }
                if (parentJob.isStopped()) {
                    try {
                        // 
                        if (jobStatus == null || jobStatus.isRunning()) {
                            // Try a remote abort ...
                            // 
                            remoteSlaveServer.stopJob(jobMeta.getName(), carteObjectId);
                        }
                    } catch (Exception e1) {
                        logError("Unable to contact slave server [" + remoteSlaveServer + "] to stop job [" + jobMeta.getName() + "]", e1);
                        oneResult.setNrErrors(1L);
                        // Stop looking too, chances are too low the server will
                        break;
                    // come back on-line
                    }
                }
            }
            // clear only the numbers, NOT the files or rows.
            result.clear();
            result.add(oneResult);
            // Set the result rows too, if any ...
            if (!Utils.isEmpty(oneResult.getRows())) {
                result.setRows(new ArrayList<RowMetaAndData>(oneResult.getRows()));
            }
            // 
            if (oneResult.getResult() == false) {
                result.setNrErrors(result.getNrErrors() + 1);
            }
            iteration++;
        }
    } catch (KettleException ke) {
        logError("Error running job entry 'job' : ", ke);
        result.setResult(false);
        result.setNrErrors(1L);
    }
    if (setLogfile) {
        if (logChannelFileWriter != null) {
            logChannelFileWriter.stopLogging();
            ResultFile resultFile = new ResultFile(ResultFile.FILE_TYPE_LOG, logChannelFileWriter.getLogFile(), parentJob.getJobname(), getName());
            result.getResultFiles().put(resultFile.getFile().toString(), resultFile);
            // 
            if (logChannelFileWriter.getException() != null) {
                logError("Unable to open log file [" + getLogFilename() + "] : ");
                logError(Const.getStackTracker(logChannelFileWriter.getException()));
                result.setNrErrors(1);
                result.setResult(false);
                return result;
            }
        }
    }
    if (result.getNrErrors() > 0) {
        result.setResult(false);
    } else {
        result.setResult(true);
    }
    return result;
}

Example 14 with LogLevel

use of org.pentaho.di.core.logging.LogLevel in project pentaho-kettle by pentaho.

the class JobEntryShell method execute.

public Result execute(Result result, int nr) throws KettleException {
    FileLoggingEventListener loggingEventListener = null;
    LogLevel shellLogLevel = parentJob.getLogLevel();
    if (setLogfile) {
        String realLogFilename = environmentSubstitute(getLogFilename());
        // if we do not have one, we must fail
        if (Utils.isEmpty(realLogFilename)) {
            logError(BaseMessages.getString(PKG, "JobEntryShell.Exception.LogFilenameMissing"));
            result.setNrErrors(1);
            result.setResult(false);
            return result;
        }
        try {
            loggingEventListener = new FileLoggingEventListener(getLogChannelId(), realLogFilename, setAppendLogfile);
            KettleLogStore.getAppender().addLoggingEventListener(loggingEventListener);
        } catch (KettleException e) {
            logError(BaseMessages.getString(PKG, "JobEntryShell.Error.UnableopenAppenderFile", getLogFilename(), e.toString()));
            logError(Const.getStackTracker(e));
            result.setNrErrors(1);
            result.setResult(false);
            return result;
        }
        shellLogLevel = logFileLevel;
    }
    log.setLogLevel(shellLogLevel);
    result.setEntryNr(nr);
    // "Translate" the arguments for later
    String[] substArgs = null;
    if (arguments != null) {
        substArgs = new String[arguments.length];
        for (int idx = 0; idx < arguments.length; idx++) {
            substArgs[idx] = environmentSubstitute(arguments[idx]);
        }
    }
    int iteration = 0;
    String[] args = substArgs;
    RowMetaAndData resultRow = null;
    boolean first = true;
    List<RowMetaAndData> rows = result.getRows();
    if (log.isDetailed()) {
        logDetailed(BaseMessages.getString(PKG, "JobEntryShell.Log.FoundPreviousRows", "" + (rows != null ? rows.size() : 0)));
    }
    while ((first && !execPerRow) || (execPerRow && rows != null && iteration < rows.size() && result.getNrErrors() == 0)) {
        first = false;
        if (rows != null && execPerRow) {
            resultRow = rows.get(iteration);
        } else {
            resultRow = null;
        }
        List<RowMetaAndData> cmdRows = null;
        if (execPerRow) {
            if (argFromPrevious) {
                if (resultRow != null) {
                    args = new String[resultRow.size()];
                    for (int i = 0; i < resultRow.size(); i++) {
                        args[i] = resultRow.getString(i, null);
                    }
                }
            } else {
                // Just pass a single row
                List<RowMetaAndData> newList = new ArrayList<RowMetaAndData>();
                newList.add(resultRow);
                cmdRows = newList;
            }
        } else {
            if (argFromPrevious) {
                // Only put the first Row on the arguments
                args = null;
                if (resultRow != null) {
                    args = new String[resultRow.size()];
                    for (int i = 0; i < resultRow.size(); i++) {
                        args[i] = resultRow.getString(i, null);
                    }
                } else {
                    cmdRows = rows;
                }
            } else {
                // Keep it as it was...
                cmdRows = rows;
            }
        }
        executeShell(result, cmdRows, args);
        iteration++;
    }
    if (setLogfile) {
        if (loggingEventListener != null) {
            KettleLogStore.getAppender().removeLoggingEventListener(loggingEventListener);
            loggingEventListener.close();
            ResultFile resultFile = new ResultFile(ResultFile.FILE_TYPE_LOG, loggingEventListener.getFile(), parentJob.getJobname(), getName());
            result.getResultFiles().put(resultFile.getFile().toString(), resultFile);
        }
    }
    return result;
}

Example 15 with LogLevel

use of org.pentaho.di.core.logging.LogLevel in project pentaho-kettle by pentaho.

the class StepMockHelper method redirectLog.

/**
 *  In case you need to use log methods during the tests
 *  use redirectLog method after creating new StepMockHelper object.
 *  Examples:
 *    stepMockHelper.redirectLog( System.out, LogLevel.ROWLEVEL );
 *    stepMockHelper.redirectLog( new FileOutputStream("log.txt"), LogLevel.BASIC );
 */
public void redirectLog(final OutputStream out, LogLevel channelLogLevel) {
    final LogChannel log = spy(new LogChannel(this.getClass().getName(), true));
    log.setLogLevel(channelLogLevel);
    when(logChannelInterfaceFactory.create(any(), any(LoggingObjectInterface.class))).thenReturn(log);
    doAnswer(new Answer<Object>() {

        @Override
        public Object answer(InvocationOnMock invocation) throws Throwable {
            Object[] args = invocation.getArguments();
            LogLevel logLevel = (LogLevel) args[1];
            LogLevel channelLogLevel = log.getLogLevel();
            if (!logLevel.isVisible(channelLogLevel)) {
                // not for our eyes.
                return null;
            }
            if (channelLogLevel.getLevel() >= logLevel.getLevel()) {
                LogMessageInterface logMessage = (LogMessageInterface) args[0];
                out.write(logMessage.getMessage().getBytes());
                out.write('\n');
                out.write('\r');
                out.flush();
                return true;
            }
            return false;
        }
    }).when(log).println((LogMessageInterface) anyObject(), (LogLevel) anyObject());
}