[GSOC 2023] Enhance ComputeNode reconciliation

[mlycore]

This is a mirror issue of apache/shardingsphere-on-cloud#208

Apache ShardingSphere

Apache ShardingSphere is positioned as a Database Plus, and aims at building a standard layer and ecosystem above heterogeneous databases. It focuses on how to reuse existing databases and their respective upper layer, rather than creating a new database. The goal is to minimize or eliminate the challenges caused by underlying databases fragmentation.

Page: https://shardingsphere.apache.org/
Github: https://github.com/apache/shardingsphere 

Background

There is a proposal about new CRD Cluster and ComputeNode as belows:

• 多次并发点击执行查询sql，没有使用分片字段 ，会有异常，栈信息如下 #167
• 频繁并发执行sql出现ERROR executor.ExecutorEngine: Concurrent execute result error 和No operations allowed after statement closed #166

Currently we try to promote ComputeNode as major CRD to represent a special ShardingSphere Proxy deployment. And plan to use Cluster indicating a special ShardingSphere Proxy cluster.

Task

This issue is to enhance ComputeNode reconciliation availability. The specific case list is as follows.

• Add IT test case for Deployment spec volume
• Add IT test case for Deployment spec template init containers
• Add IT test case for Deployment spec template spec containers
• Add IT test case for Deployment spec volume mounts
• Add IT test case for Deployment spec container ports
• Add IT test case for Deployment spec container image tag
• Add IT test case for Service spec ports
• Add IT test case for ConfigMap data serverconfig
• Add IT test case for ConfigMap data logback

You need to
 
Notice, these issues can be a good example.

• chore: add more Ginkgo tests for ComputeNode shardingsphere-on-cloud#203

Relevant Skills

1. Master Go language, Ginkgo test framework
2. Have a basic understanding of Apache ShardingSphere Concepts
3. Be familiar with Kubernetes Operator, kubebuilder framework

Targets files

ComputeNode IT - https://github.com/apache/shardingsphere-on-cloud/blob/main/shardingsphere-operator/pkg/reconcile/computenode/compute_node_test.go