🆕 Recommend Region which is cheapest in terms of 💵 across regions for selected instancetypes

[dipankardas011]

🗒️ Changelog

This pull request introduces several enhancements and optimizations to the cmd package, specifically focusing on cost optimization and region selection for managed and self-managed clusters. The key changes include the addition of new methods for cost calculation, improvements to user prompts, and the introduction of asynchronous processing for cost optimization.

Cost Optimization Enhancements:

• cmd/optimize.go: Added methods to calculate and optimize costs across different regions for both managed and self-managed clusters. These methods include findManagedOfferingCostAcrossRegions, findInstanceCostAcrossRegions, getBestRegionsWithTotalCostManaged, getBestRegionsWithTotalCostSelfManaged, OptimizeSelfManagedInstanceTypesAcrossRegions, and OptimizeManagedOfferingsAcrossRegions.

User Prompt Improvements:

• cmd/create.go: Introduced asynchronous processing for cost optimization using goroutines and channels. Added user prompts to display cost recommendations and allow region switching based on the optimized costs. [1] [2] [3] [4]
• cmd/userinput.go: Simplified the format of instance category selection prompts.

Code Refactoring:

• cmd/handle_meta.go: Modified handleRegionSelection to return a list of available regions instead of void. [1] [2]

Dependency Management:

• go.mod: Added a replace directive for the ksctl module to use a local path.

These changes collectively enhance the functionality and user experience of the ksctl command-line tool by providing more efficient and cost-effective cluster management options.

Other changes:

• Simplified the format of instance category selection in getSelectedInstanceCategory.
• Added a module replacement in go.mod for local development.

🏋🏼 Issues

📎 Related Issues

Related to:

• 🆕 First 🐾 towards ksctl Suggestion system #62
• Working on Instance type recommendation wrt to region for cheap 💵  ksctl#549

🚀 Task List

• Self managed cluster wrt to 💰 wrt to 🌏 for 💻
• Managed cluster wrt to 💰 wrt to 🌏 for 💻

🔍 Review Checklist

• Code follows project style guidelines
• Added/updated tests
• Ran tests locally
• Updated documentation
• Checked Contribution Guidelines

📸 Screenshots/Recordings

📌 Additional Notes

---

💡 PR best practices

• Keep changes focused and atomic
• Update tests and documentation
• Check for conflicts with main branch
• Respond promptly to review comments
• Follow project coding standards
• Make sure you are using pre-commit for that run this command $ pre-commit install

[dipankardas011]

@Horiodino We have to wait got the https://sum.golang.org/lookup/github.com/ksctl/ksctl/v2@v2.2.0 to get populated it seems some server error from golang is causing the go mod tidy to fail will retry after a few hour then only we can perform additional things

[dipankardas011]

Now you can review