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https://github.com/neshkeev/consistent-cassandra-builder
The project demonstrates the better approach to designing a client's API for Apache Cassandra
https://github.com/neshkeev/consistent-cassandra-builder
apache-cassandra cassandra spring-data spring-data-cassandra testcontainers
Last synced: 14 days ago
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The project demonstrates the better approach to designing a client's API for Apache Cassandra
- Host: GitHub
- URL: https://github.com/neshkeev/consistent-cassandra-builder
- Owner: neshkeev
- License: other
- Created: 2022-12-30T17:44:59.000Z (about 2 years ago)
- Default Branch: master
- Last Pushed: 2023-01-17T08:03:37.000Z (about 2 years ago)
- Last Synced: 2024-11-19T22:49:45.672Z (3 months ago)
- Topics: apache-cassandra, cassandra, spring-data, spring-data-cassandra, testcontainers
- Language: Java
- Homepage:
- Size: 279 KB
- Stars: 1
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
[](https://gitpod.io/#https://github.com/neshkeev/consistent-cassandra-builder)
# Consistent Builder API for Cassandra
## Overview
The project demonstrates an approach to organize a client's API to deal with duplicating data when working with Apache Cassandra
## Setup
### Testcontainers
By default, the test will use testcontainers to start cassandra, so the user is expected to simply run tests: `mvn test`:
- Direct approach: `mvn test -Dtest=com.github.neshkeev.papers.cassandra.DirectApproachTest`
- Factory Method + Builder: `mvn test -Dtest=com.github.neshkeev.papers.cassandra.FactoryTest`
- Factory Method + State Machine based Builder: `mvn test -Dtest=com.github.neshkeev.papers.cassandra.FactoryStateMachineTest`
**IMPORTANT**: Don't be alarmed with the `Cannot assign requested address` messages in the output, that is how the testcontainers library waits for the cassandra docker container to start
### External Cassandra
If the user is not able to use testcontainers, it possible to run the tests against an external instance of Cassandra. There is the -Duse.cassandra.in.testcontainers system property to control how Cassandra is accessed: when it's `false`, the external instance of Cassandra is used.
1. Start cassandra: `docker compose up`
1. Wait for cassandra to start. The `cassandra` container should be in the `healthy` state: `watch docker compose ps`
1. Set up the cluster: `docker compose exec -it cassandra cqlsh --file="/mnt/scripts/setup.cql"`
1. Set up the environment (skip if docker is on `localhost`):
- set the `CONTACT_POINT` environment variable, if cassandra is not on `localhost:9042` (default): `export CONTACT_POINT=localhost:9042`
- set the `KEYSPACE_NAME` environment variable, if the keyspace is not `CONSISTENT_BUILDER_DEMO_CLUSTER` (default): `export KEYSPACE_NAME=CONSISTENT_BUILDER_DEMO_CLUSTER`
1. Run tests:
- Direct approach: `mvn test -Duse.cassandra.in.testcontainers=false -Dtest=com.github.neshkeev.papers.cassandra.DirectApproachTest`
- Factory Method + Builder: `mvn test -Duse.cassandra.in.testcontainers=false -Dtest=com.github.neshkeev.papers.cassandra.FactoryTest`
- Factory Method + State Machine based Builder: `mvn test -Duse.cassandra.in.testcontainers=false -Dtest=com.github.neshkeev.papers.cassandra.FactoryStateMachineTest`