postgres

Postgres reader

Postgres reader provides message repository implementation for Postgres.

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.

Deployment

The service itself is distributed as Docker container. Check the postgres-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/absmach/magistrala

cd magistrala

# compile the postgres writer
make postgres-writer

# copy binary to bin
make install

# Set the environment variables and run the service
MG_POSTGRES_READER_LOG_LEVEL=[Service log level] \
MG_POSTGRES_READER_HTTP_HOST=[Service HTTP host] \
MG_POSTGRES_READER_HTTP_PORT=[Service HTTP port] \
MG_POSTGRES_READER_HTTP_SERVER_CERT=[Service HTTPS server certificate path] \
MG_POSTGRES_READER_HTTP_SERVER_KEY=[Service HTTPS server key path] \
MG_POSTGRES_HOST=[Postgres host] \
MG_POSTGRES_PORT=[Postgres port] \
MG_POSTGRES_USER=[Postgres user] \
MG_POSTGRES_PASS=[Postgres password] \
MG_POSTGRES_NAME=[Postgres database name] \
MG_POSTGRES_SSL_MODE=[Postgres SSL mode] \
MG_POSTGRES_SSL_CERT=[Postgres SSL cert] \
MG_POSTGRES_SSL_KEY=[Postgres SSL key] \
MG_POSTGRES_SSL_ROOT_CERT=[Postgres SSL Root cert] \
MG_THINGS_AUTH_GRPC_URL=[Things service Auth GRPC URL] \
MG_THINGS_AUTH_GRPC_TIMEOUT=[Things service Auth gRPC request timeout in seconds] \
MG_THINGS_AUTH_GRPC_CLIENT_TLS=[Things service Auth gRPC TLS mode flag] \
MG_THINGS_AUTH_GRPC_CA_CERTS=[Things service Auth gRPC CA certificates] \
MG_AUTH_GRPC_URL=[Auth service gRPC URL] \
MG_AUTH_GRPC_TIMEOUT=[Auth service gRPC request timeout in seconds] \
MG_AUTH_GRPC_CLIENT_TLS=[Auth service gRPC TLS mode flag] \
MG_AUTH_GRPC_CA_CERTS=[Auth service gRPC CA certificates] \
MG_JAEGER_URL=[Jaeger server URL] \
MG_SEND_TELEMETRY=[Send telemetry to magistrala call home server] \
MG_POSTGRES_READER_INSTANCE_ID=[Postgres reader instance ID] \
$GOBIN/magistrala-postgres-reader

Usage

Starting service will start consuming normalized messages in SenML format.

Comparator Usage Guide:

Official docs can be found here.