MongoDB reader

MongoDB reader 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_READER_PORT	Service HTTP port	8180
MF_MONGO_READER_DB	MongoDB database name	messages
MF_MONGO_READER_DB_HOST	MongoDB database host	localhost
MF_MONGO_READER_DB_PORT	MongoDB database port	27017
MF_MONGO_READER_CLIENT_TLS	Flag that indicates if TLS should be turned on	false
MF_MONGO_READER_CA_CERTS	Path to trusted CAs in PEM format
MF_MONGO_SERVER_CERT	Path to server certificate in pem format
MF_MONGO_SERVER_KEY	Path to server key in pem format
MF_JAEGER_URL	Jaeger server URL	localhost:6831
MF_THINGS_AUTH_GRPC_URL	Things service Auth gRPC URL	localhost:8183
MF_THINGS_AUTH_GRPC_TIMEOUT	Things service Auth gRPC request timeout in seconds	1s
MF_AUTH_GRPC_URL	Auth service gRPC URL	localhost:8181
MF_AUTH_GRPC_TIMEOUT	Auth service gRPC request timeout in seconds	1s

Deployment

The service itself is distributed as Docker container. Check the mongodb-reader 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/MainfluxLabs/mainflux

cd mainflux

# compile the mongodb reader
make mongodb-reader

# copy binary to bin
make install

# Set the environment variables and run the service
MF_MONGO_READER_PORT=[Service HTTP port] \
MF_MONGO_READER_DB=[MongoDB database name] \
MF_MONGO_READER_DB_HOST=[MongoDB database host] \
MF_MONGO_READER_DB_PORT=[MongoDB database port] \
MF_MONGO_READER_CLIENT_TLS=[Flag that indicates if TLS should be turned on] \
MF_MONGO_READER_CA_CERTS=[Path to trusted CAs in PEM format] \
MF_JAEGER_URL=[Jaeger server URL] \
MF_MONGO_READER_SERVER_CERT=[Path to server pem certificate file] \
MF_MONGO_READER_SERVER_KEY=[Path to server pem key file] \
MF_THINGS_AUTH_GRPC_URL=[Things service Auth gRPC URL] \
MF_THINGS_AUTH_GRPC_TIMEOUT=[Things service Auth gRPC request timeout in seconds] \
$GOBIN/mainfluxlabs-mongodb-reader

Using docker-compose

This service can be deployed using docker containers. Docker compose file is available in <project_root>/docker/addons/mongodb-reader/docker-compose.yml. In order to run all Mainflux core services, as well as mentioned optional ones, execute following command:

docker-compose -f docker/docker-compose.yml up -d
docker-compose -f docker/addons/mongodb-reader/docker-compose.yml up -d

Usage

Service exposes HTTP API for fetching messages.