Normalizer service consumes events published by adapters, normalizes SenML-formatted ones, and publishes them to the post-processing stream.
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.
|MF_NATS_URL||NATS instance URL||nats://localhost:4222|
|MF_NORMALIZER_LOG_LEVEL||Log level for the Normalizer||error|
|MF_NORMALIZER_PORT||Normalizer service HTTP port||8180|
The service itself is distributed as Docker container. The following snippet provides a compose file template that can be used to deploy the service container locally:
version: "2" services: normalizer: image: mainflux/normalizer:[version] container_name: [instance name] environment: MF_NATS_URL: [NATS instance URL] MF_NORMALIZER_LOG_LEVEL: [Normalizer log level] MF_NORMALIZER_PORT: [Service HTTP port]
To start the service outside of the container, execute the following shell script:
# download the latest version of the service go get github.com/mainflux/mainflux cd $GOPATH/src/github.com/mainflux/mainflux # compile the app; make sure to set the proper GOOS value make normalizer # copy binary to bin make install # set the environment variables and run the service MF_NATS_URL=[NATS instance URL] MF_NORMALIZER_LOG_LEVEL=[Normalizer log level] MF_NORMALIZER_PORT=[Service HTTP port] $GOBIN/mainflux-normalizer