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* Adding an option to select log level Signed-off-by: Michael Finley <Michael.Finley@target.com> * making error default log level Signed-off-by: Michael Finley <Michael.Finley@target.com> * removing go-kit/levels and expanding levels wrapper Signed-off-by: Michael Finley <Michael.Finley@target.com> * refactoring test cases and using log.fatal Signed-off-by: Michael Finley <Michael.Finley@target.com> * logger.new no longer accpets enum and now accepts string for level Signed-off-by: Michael Finley <Michael.Finley@target.com> * level_test.go refactor to compare error Signed-off-by: Michael Finley <Michael.Finley@target.com> * Updating the ws README Signed-off-by: Michael Finley <Michael.Finley@target.com> * Adding log level for mqtt Adapter Signed-off-by: Michael Finley <Michael.Finley@target.com>
75 lines
2.8 KiB
Markdown
75 lines
2.8 KiB
Markdown
# Cassandra writer
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Cassandra writer provides message repository implementation for Cassandra.
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## Configuration
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The service is configured using the environment variables presented in the
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following table. Note that any unset variables will be replaced with their
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default values.
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| Variable | Description | Default |
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|---------------------------------|------------------------------------------------------------|-----------------------|
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| MF_NATS_URL | NATS instance URL | nats://localhost:4222 |
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| MF_CASSANDRA_WRITER_LOG_LEVEL | Log level for Cassandra writer (debug, info, warn, error) | error |
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| MF_CASSANDRA_WRITER_PORT | Service HTTP port | 8180 |
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| MF_CASSANDRA_WRITER_DB_CLUSTER | Cassandra cluster comma separated addresses | 127.0.0.1 |
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| MF_CASSANDRA_WRITER_DB_KEYSPACE | Cassandra keyspace name | mainflux |
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## Deployment
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```yaml
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version: "2"
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cassandra-writer:
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image: mainflux/cassandra-writer:[version]
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container_name: [instance name]
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expose:
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- [Service HTTP port]
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restart: on-failure
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environment:
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MF_NATS_URL: [NATS instance URL]
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MF_CASSANDRA_WRITER_LOG_LEVEL: [Cassandra writer log level]
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MF_CASSANDRA_WRITER_PORT: [Service HTTP port]
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MF_CASSANDRA_WRITER_DB_CLUSTER: [Cassandra cluster comma separated addresses]
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MF_CASSANDRA_WRITER_DB_KEYSPACE: [Cassandra keyspace name]
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ports:
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- [host machine port]:[configured HTTP port]
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```
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To start the service, execute the following shell script:
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```bash
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# download the latest version of the service
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go get github.com/mainflux/mainflux
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cd $GOPATH/src/github.com/mainflux/mainflux
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# compile the cassandra writer
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make cassandra-writer
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# copy binary to bin
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make install
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# Set the environment variables and run the service
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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
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```
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### Using docker-compose
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This service can be deployed using docker containers. Docker compose file is
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available in `<project_root>/docker/addons/cassandra-writer/docker-compose.yml`.
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In order to run all Mainflux core services, as well as mentioned optional ones,
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execute following command:
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```bash
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./docker/addons/cassandra-writer/init.sh
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```
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## Usage
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Starting service will start consuming normalized messages in SenML format.
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[doc]: http://mainflux.readthedocs.io
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