Last updated: 2021-01-29 11:33:14

    Overview

    This document describes how to use SCF to process CLS logs. CLS is mainly used for log collection, and SCF mainly provides node computing capabilities for data processing.
    The data flow is as follows:

    Directions

    Creating logset

    1. Log in to the CLS console and click Logset on the left sidebar.
    2. On the logset management page, select the region of the logset at the top.
    3. Click Create Logset and enter relevant information in the Create Logset pop-up window:
    4. Click OK.

    Creating log topic

    1. Log in to the CLS console and click Logset on the left sidebar.
    2. Find the created logset and click View in the Operation column on the right to enter the logset details page.
    3. Click Add Log Topic and enter the following relevant information in the Add Log Topic window:
      • Log Topic Name: enter nginx for example.
      • Topic Partitions: for more information on topic partition, please see Topic Partition. One partition is created by default.
    4. Click OK.
    5. The log topic is successfully added, and you will be redirected to the log topic management page.

      Note:

      As both the source and destination of data ETL are CLS, you need to create at least two topics.

    Creating SCF function

    1. Log in to the SCF console and select Function Service on the left sidebar.
    2. At the top of the Function Service page, select the Beijing region and click Create to enter the function creating page and configure the following parameters:
      • Function name: enter CLSdemo.
      • Runtime environment: select Python 2.7.
      • Creation method: select Function Template.
      • Fuzzy search: enter CLSLogETL and search.
    3. Click Learn More in the template to view relevant information in the Template Details pop-up window, which can be downloaded.
    4. After configuring the basic information, click Next to enter the function configuration page.
    5. Keep the default function configuration and click Complete to complete the function creation.

      Note:

      You should select the same VPC and subnet of CLS for the created function on the Function Configuration page as shown below:

    Configuring CLS trigger

    1. Log in to the CLS console and click Logset on the left sidebar.
    2. Find the created logset and click View in the Operation column on the right to enter the logset details page.
    3. On the log topic details page, select Function Processing and click Create. Add the created function in the Function Processing pop-up window as shown below:
      The main parameter information is as follows. Keep the remaining configuration items as default:
      • Namespace: select the function namespace.
      • Function name: select the function created in the Creating SCF function step.
      • Alias: select a function alias.
      • Maximum waiting time: configure the longest waiting time for a single event pull. Default value: 60s.

    Testing function

    1. Download the log file in the test sample, extract demo-scf1.txt, and import it to the source CLS service.
    2. Switch to the SCF console to view the execution result.
      Select the Log Query tab on the function details page to view the printed log information as shown below:
    3. Switch to the target CLS service to view the data processing result.

      Note:

      You can write specific data processing methods as needed.