Mysql

Kubemq mysql target connector allows services using kubemq server to access mysql database services.

Prerequisites

The following are required to run the mysql target connector:

• kubemq cluster

• mysql server

• kubemq-targets deployment

Configuration

Mysql target connector configuration properties:

Properties Key	Required	Description	Example
connection	yes	mysql connection string address	"root:mysql@(localhost:3306)/store?charset=utf8&parseTime=True&loc=Local"
max_idle_connections	no	set max idle connections	"10"
max_open_connections	no	set max open connections	"100"
connection_max_lifetime_seconds	no	set max lifetime for connections in seconds	"3600"

Example:

bindings:
  - name: kubemq-query-mysql
    source:
      kind: kubemq.query
      name: kubemq-query
      properties:
        address: "kubemq-cluster:50000"
        client_id: "kubemq-query-mysql-connector"
        auth_token: ""
        channel: "query.mysql"
        group:   ""
        auto_reconnect: "true"
        reconnect_interval_seconds: "1"
        max_reconnects: "0"
    target:
      kind: stores.mysql
      name: target-mysql
      properties:
        connection: "root:mysql@(localhost:3306)/store?charset=utf8&parseTime=True&loc=Local"
        max_idle_connections: "10"
        max_open_connections: "100"
        connection_max_lifetime_seconds: "3600"

Usage

Query Request

Query request metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	set type of request	"query"

Query request data setting:

Data Key	Required	Description	Possible values
data	yes	query string	base64 bytes array

Example:

Query string: SELECT id,title,content,bignumber,boolvalue FROM post;

{
  "metadata": {
    "method": "query"
  },
  "data": "U0VMRUNUIGlkLHRpdGxlLGNvbnRlbnQsYmlnbnVtYmVyLGJvb2x2YWx1ZSBGUk9NIHBvc3Q7"
}

Exec Request

Exec request metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	set type of request	"exec"
isolation_level	no	set isolation level for exec operation	""
			"read_uncommitted"
			"read_committed"
			"repeatable_read"
			"serializable"

Exec request data setting:

Data Key	Required	Description	Possible values
data	yes	exec string	base64 bytes array

Example:

Exec string:

INSERT INTO post(ID,TITLE,CONTENT,BIGNUMBER,BOOLVALUE) VALUES
                           (0,NULL,'Content One',1231241241231231123,true),
                           (1,'Title Two','Content Two',123125241231231123,false);

{
  "metadata": {
    "method": "exec",
    "isolation_level": "read_uncommitted"
  },
  "data": "SU5TRVJUIElOVE8gcG9zdChJRCxUSVRMRSxDT05URU5ULEJJR05VTUJFUixCT09MVkFMVUUpIFZBTFVFUwoJICAgICAgICAgICAgICAgICAgICAgICAoMCxOVUxMLCdDb250ZW50IE9uZScsMTIzMTI0MTI0MTIzMTIzMTEyMyx0cnVlKSwKCSAgICAgICAgICAgICAgICAgICAgICAgKDEsJ1RpdGxlIFR3bycsJ0NvbnRlbnQgVHdvJywxMjMxMjUyNDEyMzEyMzExMjMsZmFsc2UpOw==" 
}

Transaction Request

Transaction request metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	set type of request	"transaction"
isolation_level	no	set isolation level for exec operation	""
			"read_uncommitted"
			"read_committed"
			"repeatable_read"
			"serializable"

Transaction request data setting:

Data Key	Required	Description	Possible values
data	yes	string string	base64 bytes array

Example:

Transaction string:

DROP TABLE IF EXISTS post;
CREATE TABLE post (
         ID bigint,
         TITLE varchar(40),
         CONTENT varchar(255),
         BIGNUMBER bigint,
         BOOLVALUE boolean,
         CONSTRAINT pk_post PRIMARY KEY(ID)
       );

{
  "metadata": {
    "key": "your-mysql-key",
    "method": "delete"
  },
  "data": "RFJPUCBUQUJMRSBJRiBFWElTVFMgcG9zdDsKCSAgICAgICBDUkVBVEUgVEFCTEUgcG9zdCAoCgkgICAgICAgICBJRCBiaWdpbnQsCgkgICAgICAgICBUSVRMRSB2YXJjaGFyKDQwKSwKCSAgICAgICAgIENPTlRFTlQgdmFyY2hhcigyNTUpLAoJCQkgQklHTlVNQkVSIGJpZ2ludCwKCQkJIEJPT0xWQUxVRSBib29sZWFuLAoJICAgICAgICAgQ09OU1RSQUlOVCBwa19wb3N0IFBSSU1BUlkgS0VZKElEKQoJICAgICAgICk7"
}