Java Code Examples for org.apache.nifi.logging.ComponentLog#trace()

The following examples show how to use org.apache.nifi.logging.ComponentLog#trace() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: LogMessage.java    From nifi with Apache License 2.0 5 votes vote down vote up 
private void processFlowFile(
        final ComponentLog logger,
        final MessageLogLevel logLevel,
        final FlowFile flowFile,
        final ProcessContext context) {

    String logPrefix = context.getProperty(LOG_PREFIX).evaluateAttributeExpressions(flowFile).getValue();
    String logMessage = context.getProperty(LOG_MESSAGE).evaluateAttributeExpressions(flowFile).getValue();

    String messageToWrite;
    if (StringUtil.isBlank(logPrefix)) {
        messageToWrite = logMessage;
    } else {
        messageToWrite = String.format("%s%s", logPrefix, logMessage);
    }

    // Uses optional property to specify logging level
    switch (logLevel) {
        case info:
            logger.info(messageToWrite);
            break;
        case debug:
            logger.debug(messageToWrite);
            break;
        case warn:
            logger.warn(messageToWrite);
            break;
        case trace:
            logger.trace(messageToWrite);
            break;
        case error:
            logger.error(messageToWrite);
            break;
        default:
            logger.debug(messageToWrite);
    }
}
Example 2
Source File: LogAttribute.java    From localization_nifi with Apache License 2.0 4 votes vote down vote up 
protected String processFlowFile(final ComponentLog logger, final DebugLevels logLevel, final FlowFile flowFile, final ProcessSession session, final ProcessContext context) {
    final Set<String> attributeKeys = getAttributesToLog(flowFile.getAttributes().keySet(), context);
    final ComponentLog LOG = getLogger();
    final String dashedLine;

    String logPrefix = context.getProperty(LOG_PREFIX).evaluateAttributeExpressions(flowFile).getValue();

    if (StringUtil.isBlank(logPrefix)) {
        dashedLine = StringUtils.repeat('-', 50);
    } else {
        // abbreviate long lines
        logPrefix = StringUtils.abbreviate(logPrefix, 40);
        // center the logPrefix and pad with dashes
        logPrefix = StringUtils.center(logPrefix, 40, '-');
        // five dashes on the left and right side, plus the dashed logPrefix
        dashedLine = StringUtils.repeat('-', 5) + logPrefix + StringUtils.repeat('-', 5);
    }

    // Pretty print metadata
    final StringBuilder message = new StringBuilder();
    message.append("logging for flow file ").append(flowFile);
    message.append("\n");
    message.append(dashedLine);
    message.append("\nStandard FlowFile Attributes");
    message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", "entryDate", new Date(flowFile.getEntryDate())));
    message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", "lineageStartDate", new Date(flowFile.getLineageStartDate())));
    message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", "fileSize", flowFile.getSize()));
    message.append("\nFlowFile Attribute Map Content");
    for (final String key : attributeKeys) {
        message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", key, flowFile.getAttribute(key)));
    }
    message.append("\n");
    message.append(dashedLine);

    // The user can request to log the payload
    final boolean logPayload = context.getProperty(LOG_PAYLOAD).asBoolean();
    if (logPayload) {
        message.append("\n");
        if (flowFile.getSize() < ONE_MB) {
            final FlowFilePayloadCallback callback = new FlowFilePayloadCallback();
            session.read(flowFile, callback);
            message.append(callback.getContents());
        } else {
            message.append("\n Not including payload since it is larger than one mb.");
        }
    }
    final String outputMessage = message.toString().trim();
    // Uses optional property to specify logging level
    switch (logLevel) {
        case info:
            LOG.info(outputMessage);
            break;
        case debug:
            LOG.debug(outputMessage);
            break;
        case warn:
            LOG.warn(outputMessage);
            break;
        case trace:
            LOG.trace(outputMessage);
            break;
        case error:
            LOG.error(outputMessage);
            break;
        default:
            LOG.debug(outputMessage);
    }

    return outputMessage;

}
Example 3
Source File: LogAttribute.java    From nifi with Apache License 2.0 4 votes vote down vote up 
protected String processFlowFile(final ComponentLog logger, final DebugLevels logLevel, final FlowFile flowFile, final ProcessSession session, final ProcessContext context) {
    final Set<String> attributeKeys = getAttributesToLog(flowFile.getAttributes().keySet(), context);
    final ComponentLog LOG = getLogger();
    final String dashedLine;

    String logPrefix = context.getProperty(LOG_PREFIX).evaluateAttributeExpressions(flowFile).getValue();
    Charset charset = Charset.forName(context.getProperty(CHARSET).evaluateAttributeExpressions(flowFile).getValue());

    if (StringUtil.isBlank(logPrefix)) {
        dashedLine = StringUtils.repeat('-', 50);
    } else {
        // abbreviate long lines
        logPrefix = StringUtils.abbreviate(logPrefix, 40);
        // center the logPrefix and pad with dashes
        logPrefix = StringUtils.center(logPrefix, 40, '-');
        // five dashes on the left and right side, plus the dashed logPrefix
        dashedLine = StringUtils.repeat('-', 5) + logPrefix + StringUtils.repeat('-', 5);
    }

    // Pretty print metadata
    final StringBuilder message = new StringBuilder();
    message.append("logging for flow file ").append(flowFile);
    message.append("\n");
    message.append(dashedLine);
    message.append("\nStandard FlowFile Attributes");
    message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", "entryDate", new Date(flowFile.getEntryDate())));
    message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", "lineageStartDate", new Date(flowFile.getLineageStartDate())));
    message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", "fileSize", flowFile.getSize()));
    message.append("\nFlowFile Attribute Map Content");
    for (final String key : attributeKeys) {
        message.append(String.format("\nKey: '%1$s'\n\tValue: '%2$s'", key, flowFile.getAttribute(key)));
    }
    message.append("\n");
    message.append(dashedLine);

    // The user can request to log the payload
    final boolean logPayload = context.getProperty(LOG_PAYLOAD).asBoolean();
    if (logPayload) {
        message.append("\n");
        if (flowFile.getSize() < ONE_MB) {
            final FlowFilePayloadCallback callback = new FlowFilePayloadCallback(charset);
            session.read(flowFile, callback);
            message.append(callback.getContents());
        } else {
            message.append("\n Not including payload since it is larger than one mb.");
        }
    }
    final String outputMessage = message.toString().trim();
    // Uses optional property to specify logging level
    switch (logLevel) {
        case info:
            LOG.info(outputMessage);
            break;
        case debug:
            LOG.debug(outputMessage);
            break;
        case warn:
            LOG.warn(outputMessage);
            break;
        case trace:
            LOG.trace(outputMessage);
            break;
        case error:
            LOG.error(outputMessage);
            break;
        default:
            LOG.debug(outputMessage);
    }

    return outputMessage;

}