Mainflux.mainflux/writers/mongodb

MongoDB writer

MongoDB writer provides message repository implementation for MongoDB.

Configuration

The service is configured using the environment variables presented in the following table. Note that any unset variables will be replaced with their default values.

Variable	Description	Default
MF_NATS_URL	NATS instance URL	nats://localhost:4222
MF_MONGO_WRITER_LOG_LEVEL	Log level for MongoDB writer	error
MF_MONGO_WRITER_PORT	Service HTTP port	8180
MF_MONGO_WRITER_DB	Default MongoDB database name	messages
MF_MONGO_WRITER_DB_HOST	Default MongoDB database host	localhost
MF_MONGO_WRITER_DB_PORT	Default MongoDB database port	27017
MF_MONGO_WRITER_SUBJECTS_CONFIG	Configuration file path with subjects list	/config/subjects.toml
MF_MONGO_WRITER_CONTENT_TYPE	Message payload Content Type	application/senml+json

Deployment

  version: "3.7"
  mongodb-writer:
    image: mainflux/mongodb-writer:[version]
    container_name: [instance name]
    depends_on:
      - mongodb
      - nats
    expose:
      - [Service HTTP port]
    restart: on-failure
    environment:
      MF_NATS_URL: [NATS instance URL]
      MF_MONGO_WRITER_LOG_LEVEL: [MongoDB writer log level]
      MF_MONGO_WRITER_PORT: [Service HTTP port]
      MF_MONGO_WRITER_DB: [MongoDB name]
      MF_MONGO_WRITER_DB_HOST: [MongoDB host]
      MF_MONGO_WRITER_DB_PORT: [MongoDB port]
      MF_MONGO_WRITER_SUBJETCS_CONFIG: [Configuration file path with subjects list]
      MF_MONGO_WRITER_CONTENT_TYPE: [Message payload Content Type]
    ports:
      - [host machine port]:[configured HTTP port]
    volume:
      - ./subjects.yaml:/config/subjects.yaml

To start the service, execute the following shell script:

# download the latest version of the service
git clone https://github.com/mainflux/mainflux

cd mainflux

# compile the mongodb writer
make mongodb-writer

# copy binary to bin
make install

# Set the environment variables and run the service
MF_NATS_URL=[NATS instance URL] MF_MONGO_WRITER_LOG_LEVEL=[MongoDB writer log level] MF_MONGO_WRITER_PORT=[Service HTTP port] MF_MONGO_WRITER_DB=[MongoDB database name] MF_MONGO_WRITER_DB_HOST=[MongoDB database host] MF_MONGO_WRITER_DB_PORT=[MongoDB database port] MF_MONGO_WRITER_SUBJETCS_CONFIG=[Configuration file path with subjetcs list] $GOBIN/mainflux-mongodb-writer

Usage

Starting service will start consuming normalized messages in SenML format.