How we wrote Tarantool Kubernetes Operator

• go-tarantool

  1 178 8.5 Go

  Tarantool 1.10+ client for Go language

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• tarantool-python

  1 98 6.8 Python

  Python client library for Tarantool

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• InfluxDB

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• tarantool-java

  1 52 2.6 Java

  A Java client for Tarantool

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• vshard

  1 98 8.6 Lua

  The new generation of sharding based on virtual buckets

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• queue

  2 231 5.9 Lua

  Create task queues, add and take jobs, monitor failed tasks

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• cartridge

  2 93 8.6 Lua

  Out-of-the-box cluster manager for Tarantool with a modern web UI (by tarantool)

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• luatest

  2 38 7.3 Lua

  Tarantool test framework written in Lua

  

The Tarantool ecosystem is constantly growing. Today it already has a lot of connectors for popular programming languages (Golang, Python, Java, etc.), extension modules for building applications with blocks (vshard, queue, etc.), and frameworks that speed up the development process (Cartridge and Luatest).

• SaaSHub

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• tarantool-operator

  1 49 4.2 Go

  Tarantool Operator manages Tarantool Cartridge clusters atop Kubernetes

  

Development of the Enterprise version of the operator started with reevaluating its Community version where three CRDs were used to describe a cluster:

• operator-sdk

  23 7,013 8.0 Go

  SDK for building Kubernetes applications. Provides high level APIs, useful abstractions, and project scaffolding.

  

• You can download Tarantool on the official website • Get help in our Telegram chat • Read more about Operator SDK here • Creating fake Kubernetes topology • The testify library we used for unit tests • E2E framework

• gomock

  40 9,010 2.5 Go

  Discontinued GoMock is a mocking framework for the Go programming language. (by golang)

  

As every software, the operator needs to be tested. In our case, we use two types of tests: Unit and E2E. For testing, usually mock code generation is used (for example, via golang/mock). We didn't like this option, so we decided to use Testify's mock module that allows to mock required function interfaces using the reflection API—the interfaces used to configure Tarantool.

• Testify

  64 22,073 8.6 Go

  A toolkit with common assertions and mocks that plays nicely with the standard library

  

• You can download Tarantool on the official website • Get help in our Telegram chat • Read more about Operator SDK here • Creating fake Kubernetes topology • The testify library we used for unit tests • E2E framework

• controller-runtime

  53 2,305 9.4 Go

  Repo for the controller-runtime subproject of kubebuilder (sig-apimachinery)

  

• You can download Tarantool on the official website • Get help in our Telegram chat • Read more about Operator SDK here • Creating fake Kubernetes topology • The testify library we used for unit tests • E2E framework

• e2e-framework

  2 440 8.6 Go

  A Go framework for end-to-end testing of components running in Kubernetes clusters.

  

As for E2E tests, we used the E2E framework for their implementation. It allowed us to fully check the operator's Helm chart and test it in different Kubernetes versions with KinD. Due to the specifics of tests in Kubernetes, we have to wait until different pods are created. Therefore, the duration of all tests grows very fast. E2E framework helped us solve this problem since it supports parallel start of test cases. It let us shorten the time of tests from 30 to 8 minutes.

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