command

README

KubeMQ Bridges Command Source

KubeMQ Bridges Command source provides an RPC command subscriber for processing target commands.

Prerequisites

The following are required to run the command source connector:

• kubemq cluster
• kubemq-bridges deployment

Configuration

Command 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
sources	no	set how many command sources to subscribe	"1"
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 times to reconnect	"0"

Example:

bindings:
  - name:  command-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.command # 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-command-connection"
          auth_token: ""
          channel: "command"
          group: ""
          sources: "1"
        - address: "kubemq-cluster-b-grpc.kubemq.svc.cluster.local:50000"
          client_id: "cluster-b-command-connection"
          auth_token: ""
          channel: "command"
          group: ""
          sources: "1"
        - address: "kubemq-cluster-c-grpc.kubemq.svc.cluster.local:50000"
          client_id: "cluster-c-command-connection"
          auth_token: ""
          channel: "command"
          group: ""
          sources: "1"              
    targets:
    .....

Documentation

Index

• type Source
  • func New() *Source
  • func (s *Source) Init(ctx context.Context, connection config.Metadata, properties config.Metadata, ...) error
  • func (s *Source) Start(ctx context.Context, target []middleware.Middleware) error
  • func (s *Source) Stop() error

Types

type Source

type Source struct {
	// contains filtered or unexported fields
}

func New

func New() *Source

func (*Source) Init

func (s *Source) Init(ctx context.Context, connection config.Metadata, properties config.Metadata, bindingName string, log *logger.Logger) error

func (*Source) Start

func (s *Source) Start(ctx context.Context, target []middleware.Middleware) error

func (*Source) Stop

func (s *Source) Stop() error