Kubemq postgres target connector allows services using kubemq server to access postgres database services.
Prerequisites
The following are required to run the postgres target connector:
kubemq-targets deployment
Configuration
Postgres target connector configuration properties:
Example:
bindings:
- name: kubemq-query-gcp-postgres
source:
kind: kubemq.query
name: kubemq-query
properties:
address: "kubemq-cluster:50000"
client_id: "kubemq-query-gcp-postgres-connector"
auth_token: ""
channel: "query.postgres"
group: ""
auto_reconnect: "true"
reconnect_interval_seconds: "1"
max_reconnects: "0"
target:
kind: gcp.stores.postgres
name: target-gcp-postgres
properties:
instance_connection_name: "instanceConnectionName"
db_user: "user"
db_name: "dbName"
db_password: "dbPassword"
max_idle_connections: "10"
max_open_connections: "100"
connection_max_lifetime_seconds: "3600"
credentials: 'json'
Usage
Query Request
Query request metadata setting:
Query request data setting:
Example:
Query string: SELECT id,title,content FROM post;
{
"metadata": {
"method": "query"
},
"data": "U0VMRUNUIGlkLHRpdGxlLGNvbnRlbnQgRlJPTSBwb3N0Ow=="
}
Exec Request
Exec request metadata setting:
Exec request data setting:
Example:
Exec string:
INSERT INTO post(ID,TITLE,CONTENT) VALUES (1,NULL,'Content One'),(2,'Title Two','Content Two');
{
"metadata": {
"method": "exec",
"isolation_level": "read_uncommitted"
},
"data": "SU5TRVJUIElOVE8gcG9zdChJRCxUSVRMRSxDT05URU5UKSBWQUxVRVMKCSAgICAgICAgICAgICAgICAgICAgICAgKDEsTlVMTCwnQ29udGVudCBPbmUnKSwKCSAgICAgICAgICAgICAgICAgICAgICAgKDIsJ1RpdGxlIFR3bycsJ0NvbnRlbnQgVHdvJyk7"
}
Transaction Request
Transaction request metadata setting:
Transaction request data setting:
Example:
Transaction string:
DROP TABLE IF EXISTS post;
CREATE TABLE post (
ID serial,
TITLE varchar(40),
CONTENT varchar(255),
CONSTRAINT pk_post PRIMARY KEY(ID)
);
INSERT INTO post(ID,TITLE,CONTENT) VALUES
(1,NULL,'Content One'),
(2,'Title Two','Content Two');
{
"metadata": {
"key": "your-postgres-key",
"method": "delete"
},
"data": "CURST1AgVEFCTEUgSUYgRVhJU1RTIHBvc3Q7CiAgICBDUkVBVEUgVEFCTEUgcG9zdCAoCgkgICAgICAgICBJRCBzZXJpYWwsCgkgICAgICAgICBUSVRMRSB2YXJjaGFyKDQwKSwKCSAgICAgICAgIENPTlRFTlQgdmFyY2hhcigyNTUpLAoJICAgICAgICAgQ09OU1RSQUlOVCBwa19wb3N0IFBSSU1BUlkgS0VZKElEKQoJICAgICAgICk7CiAgICBJTlNFUlQgSU5UTyBwb3N0KElELFRJVExFLENPTlRFTlQpIFZBTFVFUwoJICAgICAgICAgICAgICAgICAgICAgICAoMSxOVUxMLCdDb250ZW50IE9uZScpLAoJICAgICAgICAgICAgICAgICAgICAgICAoMiwnVGl0bGUgVHdvJywnQ29udGVudCBUd28nKTs="
}