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* Update project dependencies Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com> * Update InfluxDB and Cassandra versions Update InfluxDB and Cassandra versions in docker-compose file as well as images version in tests. Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com> * Update gRPC version Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com> * Make name first value of constraints Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>
Cassandra writer
Cassandra writer provides message repository implementation for Cassandra.
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_NATS_URL | NATS instance URL | nats://localhost:4222 |
MF_CASSANDRA_WRITER_LOG_LEVEL | Log level for Cassandra writer (debug, info, warn, error) | error |
MF_CASSANDRA_WRITER_PORT | Service HTTP port | 8180 |
MF_CASSANDRA_WRITER_DB_CLUSTER | Cassandra cluster comma separated addresses | 127.0.0.1 |
MF_CASSANDRA_WRITER_DB_KEYSPACE | Cassandra keyspace name | mainflux |
Deployment
version: "2"
cassandra-writer:
image: mainflux/cassandra-writer:[version]
container_name: [instance name]
expose:
- [Service HTTP port]
restart: on-failure
environment:
MF_NATS_URL: [NATS instance URL]
MF_CASSANDRA_WRITER_LOG_LEVEL: [Cassandra writer log level]
MF_CASSANDRA_WRITER_PORT: [Service HTTP port]
MF_CASSANDRA_WRITER_DB_CLUSTER: [Cassandra cluster comma separated addresses]
MF_CASSANDRA_WRITER_DB_KEYSPACE: [Cassandra keyspace name]
ports:
- [host machine port]:[configured HTTP port]
To start the service, 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 cassandra writer
make cassandra-writer
# copy binary to bin
make install
# Set the environment variables and run the service
MF_NATS_URL=[NATS instance URL] MF_CASSANDRA_WRITER_LOG_LEVEL=[Cassandra writer log level] MF_CASSANDRA_WRITER_PORT=[Service HTTP port] MF_CASSANDRA_WRITER_DB_CLUSTER=[Cassandra cluster comma separated addresses] MF_CASSANDRA_WRITER_DB_KEYSPACE=[Cassandra keyspace name] $GOBIN/mainflux-cassandra-writer
Using docker-compose
This service can be deployed using docker containers. Docker compose file is
available in <project_root>/docker/addons/cassandra-writer/docker-compose.yml
.
In order to run all Mainflux core services, as well as mentioned optional ones,
execute following command:
./docker/addons/cassandra-writer/init.sh
Usage
Starting service will start consuming normalized messages in SenML format.