Sync Spring UAT Branches & Code

Sync Spring UAT Branches & Code | Generated by AI

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Here’s a collection of best practices and patterns you can mix-and-match to keep your three UAT branches in sync, keep your history clean, and handle country-specific code in a Spring app—plus a bit on where AI can help.

1. Branching & synchronization

Trunk-based with short-lived feature branches
- Keep a single main (or develop) branch.
- For each Jira ticket (e.g. FT-103) and country, create feature branches named:
```
feature/FT-103-cn
feature/FT-103-sg
feature/FT-103-tw
```
- When work is ready, merge back into main, then cherry-pick or merge into each uat_cn, uat_sg, uat_tw.
- Benefit: merges into main happen once; country branches only pick up what they need.
Regular syncing of UAT branches
- Schedule a daily (or per-build) job to rebase each uat_* onto main so they don’t drift too far.
- Automate it in CI (e.g. a GitHub Action that rebases uat_cn every night).
Use pull-requests + review enforcement
- Require a PR for every feature-branch → main merge.
- Ensure the “FT-xxx” ticket is in the branch name and in the PR title/description.

2. Commit-message conventions & squashing

Conventional-style with JIRA key

FT-103: fix null-pointer in customer lookup

Micro-commit → squash at merge time
- During feature work, developers commit as they go:
```
FT-103 #1: initial wiring of service beans
FT-103 #2: add validation logic
FT-103 #3: update error handling
```
- On PR merge, use “Squash and merge” to collapse all FT-103 commits into one concise commit:
```
FT-103: customer-service validation and error handling
```
Numbering within a ticket
- If tracking multiple distinct steps in the same ticket, numbering (#1, #2) is fine during dev.
- Once merged, squash everything into a single FT-103 commit; the history stays tidy and each ticket is one logical change.
Automate commit-lint
- Use a Git hook or CI plugin (e.g. commitlint) to enforce FT-\d+ at the start of every message.
- Optionally enforce a scope: FT-103(sg): ….

3. Handling country-specific code in Spring

Profiles & conditional beans
- Define a Spring profile per country: @Profile("cn"), @Profile("sg"), @Profile("tw").
- In application-cn.yml, application-sg.yml, etc., set country-specific properties.
- At startup, pass --spring.profiles.active=cn (or sg, tw) to pick the right beans.
Strategy pattern / plugin modules
- Create an interface PaymentProcessor with three implementations (CnPaymentProcessor, etc.).
- Use @Component + @Profile or a factory that picks the bean based on a runtime flag.
Resource bundles / feature flags
- If differences are small (e.g. date formats, endpoint URLs), keep one code path and externalize differences in property files or a feature-flag service.
Separate modules (if large)
- For very divergent logic, split into sub-modules:
```
/core
/country-cn
/country-sg
/country-tw
```
- The main app pulls in only the active country module at build/deploy time.

4. Separating tasks by author vs by ticket

By ticket, not author. Tasks should be unitized around features (Jira IDs), not the person.
If multiple devs work on FT-103, they collaborate on the same branch or use topic branches off of it—but ultimately merge back into the single FT-103 branch.
Author metadata stays in the commit author field; you don’t need to squash by author.

5. Putting AI to work

Commit-message generation
- Tools like GitHub Copilot or OpenAI can suggest clean, conventional commit messages from your diff.
- Integrate a pre-commit hook that runs ai-commit --preview to draft the message for review.
PR description & changelog
- Use an AI assistant to summarize all commits under a ticket into a coherent PR description or release note:
  
  “Summarize the changes in feature/FT-103 into bullet points.”
Code review assistance
- AI-powered linters (SonarQube with AI plugins, DeepCode) can point out issues in country-specific code paths.
Automating cherry-picks/rebases
- Write a small script (or use a low-code platform) that, when FT-103 lands on main, automatically cherry-picks it into each uat_* and opens PRs for any merge conflicts.

Putting it all together

Develop on feature/FT-XXX-<cn/sg/tw>.
Commit freely (numbered steps OK), referencing the JIRA key.
Open a PR → main; choose Squash-and-merge so that each FT-XXX is one clean commit.
CI job automatically rebases/merges that commit into each uat_cn, uat_sg, uat_tw.
Spring profiles at runtime pick the correct country logic—no code duplication in three branches.
AI tools help enforce commit style, summarize PRs, and manage merges.

This workflow keeps your history tidy, ensures each ticket is traceable to a single commit across all environments, separates country logic at runtime instead of in Git history, and leverages AI where it adds the most value.

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