Function Compute (2.0):Use Function Compute to perform message cleansing

The following message contains a list of students.

message:
[Jack, Male, 17, Class 4; Alice, Female, 17, Class 3; John, Male, 17, Class 4]

You need to split the message into the following messages, each of which contains information about a single student, before you send the messages to specified destination services. Example:

message:
    [Jack, Male, 17, Class 4]
message:
    [Alice, Female, 17, Class 3]
message:
    [John, Male, Class 17, Class 4]

The following message contains a list of toothpastes.

message:
[BrandA, toothpaste, $12.98, 100g
 BrandB, toothpaste, $7.99, 80g
 BrandC, toothpaste, $1.99, 100g]

The list needs to be sent to specified destination topics based on the custom dynamic rules. The following items describe the rules:

• Send the messages that start with BrandA to the BrandA-item-topic and BrandA-discount-topic topics.

• Send the messages that start with BrandB to the BrandB-item-topic and BrandB-discount-topic topics.

• Send other messages to the Unknown-brand-topic topic.

The following sample code shows the JSON format of the rules:

{
  "defaultTopic": "Unknown-brand-topic",
  "rules": [
    {
      "regex": "^BrandA",
      "targetTopics": [
        "BrandA-item-topic",
        "BrandA-discount-topic"
      ]
    },
    {
      "regex": "^BrandB",
      "targetTopics": [
        "BrandB-item-topic",
        "BrandB-discount-topic"
      ]
    }
  ]
}

In this example, IP address segments are enriched. The following code snippet shows the access logs of a service:

{
  "accountID": "164901546557****",
  "hostIP": "192.168.XX.XX"
}

The source of the IP address needs to be queried, and the mapping relationship needs to be stored in a MySQL database.

CREATE TABLE `tb_ip` (
    ->      `IP` VARCHAR(256) NOT NULL,
    ->     `Region` VARCHAR(256) NOT NULL,
    ->      `ISP` VARCHAR(256) NOT NULL,
    ->      PRIMARY KEY (`IP`)
    -> );

The following code snippet shows the processed message.

{
  "accountID": "164901546557****",
  "hostIP": "192.168.XX.XX",
  "region": "beijing"
}

The following message contains the registration information about the employees of a company. The information includes confidential content, such as employee IDs and mobile phone numbers.

Jack, Employee ID 1, 131 1111 1111
Alice, Employee ID 2, 132 2222 2222
John, Employee ID 3, 133 3333 3333 

The confidential content in the preceding message must be masked before the message is sent to the destination services. Example:

Ja**, Employee ID *, ***********
Alic*, Employee ID *, ***********
Joh*, Employee ID *, ***********