Go Dcp

This repository contains go implementation of a Couchbase Database Change Protocol (DCP) client. You can find more information by looking at our docs.

Contents

• Why?
• Usage
• Configuration
• Examples

Why?

• Our main goal is to build a dcp client for faster and stateful systems. We're already using this repository in below implementations:
  • Elastic Connector
  • Kafka Connector
  • Couchbase Connector
  • SQL Connector
  • MongoDB Connector
  • Cassandra Connector
  • Redis Connector

Example

package main

import (
  "github.com/Trendyol/go-dcp"
  "github.com/Trendyol/go-dcp/logger"
  "github.com/Trendyol/go-dcp/models"
)

func listener(ctx *models.ListenerContext) {
  switch event := ctx.Event.(type) {
  case models.DcpMutation:
    logger.Log.Info(
      "mutated(vb=%v,eventTime=%v) | id: %v, value: %v | isCreated: %v",
      event.VbID, event.EventTime, string(event.Key), string(event.Value), event.IsCreated(),
    )
  case models.DcpDeletion:
    logger.Log.Info(
      "deleted(vb=%v,eventTime=%v) | id: %v",
      event.VbID, event.EventTime, string(event.Key),
    )
  case models.DcpExpiration:
    logger.Log.Info(
      "expired(vb=%v,eventTime=%v) | id: %v",
      event.VbID, event.EventTime, string(event.Key),
    )
  }

  ctx.Ack()
}

func main() {
  connector, err := dcp.NewDcp("config.yml", listener)
  if err != nil {
    panic(err)
  }

  defer connector.Close()

  connector.Start()
}

Usage

$ go get github.com/Trendyol/go-dcp

Configuration