graylog ProcessBufferProcessor 简单说明

ProcessBufferProcessor 的核心是进行消息处理，会调用消息处理器，同时会将消息放到OutputBuffer 中
ProcessBufferProcessor 实际上是ProcessBuffer 中Disruptor 的一个handler

核心处理

handleMessage 方法

 

private void handleMessage(@Nonnull Message msg) {

        msg.addStream(defaultStreamProvider.get());

        Messages messages = msg;

       // 消息处理器，进行消息加工

        for (MessageProcessor messageProcessor : orderedMessageProcessors) {

            messages = messageProcessor.process(messages);

        }

 

        for (Message message : messages) {

            message.ensureValidTimestamp();

 

            if (!message.hasField(Message.FIELD_GL2_MESSAGE_ID) || isNullOrEmpty(message.getFieldAs(String.class, Message.FIELD_GL2_MESSAGE_ID))) {

                // Set the message ID once all message processors have finished

                // See documentation of Message.FIELD_GL2_MESSAGE_ID for details

                message.addField(Message.FIELD_GL2_MESSAGE_ID, ulid.nextULID());

            }

 

            // The processing time should only be set once all message processors have finished

            message.setProcessingTime(Tools.nowUTC());

           // 消息处理标记 

            processingStatusRecorder.updatePostProcessingReceiveTime(message.getReceiveTime());

 

            if(failureSubmissionService.submitProcessingErrors(message)) {

              // 消息放到 outputBuffer 中

                outputBuffer.insertBlocking(message);

            }

        }

    }

MessageProcessor

MessageProcessor 会调用Filter 进行消息的加工
参考实现

 

 

包含的filter 实现

 

 

参考资料

https://github.com/Graylog2/graylog2-server/blob/626be1f0d80506705b5ba41fbea33c2ec0164bc0/graylog2-server/src/main/java/org/graylog2/shared/buffers/processors/ProcessBufferProcessor.java
https://github.com/Graylog2/graylog2-server/blob/626be1f0d80506705b5ba41fbea33c2ec0164bc0/graylog2-server/src/main/java/org/graylog2/plugin/messageprocessors/MessageProcessor.java
https://github.com/Graylog2/graylog2-server/blob/626be1f0d80506705b5ba41fbea33c2ec0164bc0/graylog2-server/src/main/java/org/graylog2/plugin/filters/MessageFilter.java