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Configuration

This is about how to fill the configuration file for the service

The configuration file needed by the application need to be in yaml format.

The configuration file could be named as you want, by default if you don't specified the parameter --configFile is config.yaml This could be located in any place, but by default when service start this find the configuration file in the following location:

  1. ./config.yaml Next to the service binary mq-to-db
  2. /etc/mq-to-db/config.yaml Into the standard Linux configuration File System
  3. $HOME/config.yaml Into the user home which is executing the service binary mq-to-db

NOTE: Remember that thanks to the parameter --configFile you can tell to the service which configuration file you want to use, for example:

  1. mq-to-db --configFile '/tmp/myconfig.yaml'
  2. mq-to-db --configFile './mq-to-db.yaml'

To read the config file we are using the golang package viper and pflag

config.yaml

The config file config-sample.yaml could be used as template

---
dispatcher:
  consumerConcurrency: 4 # Number of go routines consuming messages from Queue
  storageWorkers: 40  # Number of go routines processing the messages received from consumers and sending messages to storage

consumer:
  kind: rabbitmq
  address: 127.0.0.1
  port: 5672
  requestedHeartbeat: 25s
  username: guest
  password: guest
  virtualHost: my.virtualhost # Optional
  queue:
    name: my.queue
    routingKey: my.routeKey
    durable: true
    autoDelete: false
    exclusive: false
    autoACK: false
    PrefetchCount: 1500
    PrefetchSize: 0
    args:                    # Optional
      x-message-ttl: 180000
      x-dead-letter-exchange: retry.exchange
  exchange:
    name: my.exchange
    type: topic
    durable: true
    autoDelete: false
    args:                    # Optional
      alternate-exchange: my.ae

database:
  kind: postgresql
  address: 127.0.0.1
  port: 5432
  username: postgres
  password: mysecretpassword
  database: postgres
  sslMode: disable
  maxPingTimeOut: 1s
  maxQueryTimeOut: 10s
  connMaxLifetime: 0
  maxIdleConns: 5
  maxOpenConns: 100