Mainflux.mainflux/consumers/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_MONGO_WRITER_LOG_LEVEL	Log level for MongoDB writer	info
MF_MONGO_WRITER_CONFIG_PATH	Config file path with Message broker subjects list, payload type and content-type	/config.toml
MF_MONGO_WRITER_HTTP_HOST	Service HTTP host	localhost
MF_MONGO_WRITER_HTTP_PORT	Service HTTP port	9010
MF_MONGO_WRITER_HTTP_SERVER_CERT	Service HTTP server certificate path	""
MF_MONGO_WRITER_HTTP_SERVER_KEY	Service HTTP server key	""
MF_MONGO_NAME	Default MongoDB database name	messages
MF_MONGO_HOST	Default MongoDB database host	localhost
MF_MONGO_PORT	Default MongoDB database port	27017
MF_MESSAGE_BROKER_URL	Message broker instance URL	nats://localhost:4222
MF_JAEGER_URL	Jaeger server URL	http://jaeger:14268/api/traces
MF_SEND_TELEMETRY	Send telemetry to mainflux call home server	true
MF_MONGO_WRITER_INSTANCE_ID	MongoDB writer instance ID	""

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_MONGO_WRITER_LOG_LEVEL=[MongoDB writer log level] \
MF_MONGO_WRITER_CONFIG_PATH=[Configuration file path with Message broker subjects list] \
MF_MONGO_WRITER_HTTP_HOST=[Service HTTP host] \
MF_MONGO_WRITER_HTTP_PORT=[Service HTTP port] \
MF_MONGO_WRITER_HTTP_SERVER_CERT=[Service HTTP server certificate] \
MF_MONGO_WRITER_HTTP_SERVER_KEY=[Service HTTP server key] \
MF_MONGO_NAME=[MongoDB database name] \
MF_MONGO_HOST=[MongoDB database host] \
MF_MONGO_PORT=[MongoDB database port] \
MF_MESSAGE_BROKER_URL=[Message broker instance URL] \
MF_JAEGER_URL=[Jaeger server URL] \
MF_SEND_TELEMETRY=[Send telemetry to mainflux call home server] \
MF_MONGO_WRITER_INSTANCE_ID=[MongoDB writer instance ID] \

$GOBIN/mainflux-mongodb-writer

Usage

Starting service will start consuming normalized messages in SenML format.