Query

KubeMQ Bridges Query source provides an RPC query subscriber for processing target commands.

Prerequisites

The following are required to run the query source connector:

  • kubemq cluster

  • kubemq-bridges deployment

Configuration

Query source connector configuration properties:

Properties Key

Required

Description

Example

address

yes

kubemq server address (gRPC interface)

kubemq-cluster-a-grpc.kubemq.svc.cluster.local:50000

client_id

no

set client id

"client_id"

auth_token

no

set authentication token

JWT token

channel

yes

set channel to subscribe

group

no

set subscriber group

auto_reconnect

no

set auto reconnect on lost connection

"false", "true"

reconnect_interval_seconds

no

set reconnection seconds

"5"

max_reconnects

no

set how many time to reconnect

"0"

Example:

bindings:
  - name:  query-binding 
    properties: 
      log_level: error
      retry_attempts: 3
      retry_delay_milliseconds: 1000
      retry_max_jitter_milliseconds: 100
      retry_delay_type: "back-off"
      rate_per_second: 100
    sources:
      kind: source.query # Sources kind
      name: 3-clusters-source # sources name 
      connections: # Array of connections settings per each source kind
        - address: "kubemq-cluster-a-grpc.kubemq.svc.cluster.local:50000"
          client_id: "cluster-a-query-connection"
          auth_token: ""
          channel: "query"
          group: ""
        - address: "kubemq-cluster-b-grpc.kubemq.svc.cluster.local:50000"
          client_id: "cluster-b-query-connection"
          auth_token: ""
          channel: "query"
          group: ""
        - address: "kubemq-cluster-c-grpc.kubemq.svc.cluster.local:50000"
          client_id: "cluster-c-query-connection"
          auth_token: ""
          channel: "query"
          group: ""              
    targets:
    .....

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