2.6 KiB
2.6 KiB
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_BROKER_URL | Message broker instance URL | nats://localhost:4222 |
| MF_MONGO_WRITER_LOG_LEVEL | Log level for MongoDB writer | info |
| MF_MONGO_WRITER_PORT | Service HTTP port | 9008 |
| 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_CONFIG_PATH | Config file path with Message broker subjects list, payload type and content-type | /config.toml |
Deployment
The service itself is distributed as Docker container. Check the mongodb-writer service section in docker-compose to see how service is deployed.
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_BROKER_URL=[Message broker 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_CONFIG_PATH=[Configuration file path with Message broker subjects list] \
$GOBIN/mainflux-mongodb-writer
Usage
Starting service will start consuming normalized messages in SenML format.