DOT NOT MERGE -- RDS/Aurora logical refresh component #262
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Add a new component that automates DBLab full refresh using temporary RDS/Aurora database clones created from snapshots. This enables a hassle-free data sync workflow that doesn't impact production. Features: - Create temporary RDS/Aurora clones from latest automated snapshots - Wait for clone availability with proper timeout handling - Trigger DBLab full refresh via API - Poll refresh status until completion - Clean up temporary clones automatically Deployment options: - AWS Lambda with SAM template and EventBridge scheduling - Standalone CLI binary for cron/manual execution - Docker container for containerized environments Includes comprehensive documentation with IAM policy examples and example configuration files.
Add a fully standalone version of the RDS/Aurora refresh tool that can be built and deployed immediately without requiring a DBLab Engine release. This version has no dependencies on DBLab internal packages. The standalone component includes: - Self-contained Go module with minimal dependencies - Makefile for easy building (CLI, Lambda, Docker) - SAM template for AWS Lambda deployment - Dockerfile for container builds - Comprehensive documentation Can be used immediately by: 1. go build -o rds-refresh . 2. ./rds-refresh -config config.yaml
- Add UpdateSourceConfig method to update DBLab source connection before triggering refresh, ensuring DBLab knows the clone endpoint - Add source database credentials (dbName, username, password) to config for DBLab connection configuration - Remove Lambda-specific code, focusing on container/CLI deployment which better suits the long-running nature of refresh operations - Remove duplicate engine-integrated code (engine/internal/rdsrefresh and engine/cmd/rds-refresh) since standalone component is preferred - Update documentation with container deployment options (Docker, ECS Task, Kubernetes CronJob, CLI with cron) - Update workflow to include config update step before refresh trigger
DBLab expects a flat JSON structure matching ConfigProjection fields,
not a nested structure. The API automatically reloads the config after
update (calls reloadFn internally), so no SIGHUP is needed.
Changed from nested:
{"retrieval": {"dbSource": {"host": "..."}}}
To flat projection format:
{"host": "...", "port": 5432, "dbname": "...", ...}
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Author
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@cursor review |
NikolayS
changed the title
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The function could return success prematurely if DBLab's status still showed StatusFinished from a previous refresh. Since /full-refresh triggers the operation in a goroutine, polling immediately after could see stale status. Now tracks whether refresh has actually started before accepting StatusFinished as success. This prevents premature clone deletion.
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@cursor review again |
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Cursor Agent can help with this pull request. Just |
…tates - Add immediate status check before ticker loop in WaitForRefreshComplete to avoid unnecessary delay of up to pollInterval (30s) on first check - Align IsRefreshInProgress with WaitForRefreshComplete by including StatusPending and StatusRenewed as in-progress states, preventing potential duplicate refresh triggers
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@cursor check it again |
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I've reviewed the Review summary✅ Bug 1: Race condition (premature completion on stale status) - FIXEDThe ✅ Bug 2: Inconsistent refresh status check - FIXEDThe // IsRefreshInProgress checks if a refresh is currently in progress.
// Considers all active states: refreshing, snapshotting, pending, renewed.
func (c *DBLabClient) IsRefreshInProgress(ctx context.Context) (bool, error) {
status, err := c.GetStatus(ctx)
if err != nil {
return false, err
}
switch status.Retrieving.Status {
case StatusRefreshing, StatusSnapshotting, StatusPending, StatusRenewed:
return true, nil
default:
return false, nil
}
}✅ Bug 3: Delayed first status check - FIXEDThe // immediate first check
if done, err := checkStatus(); err != nil {
return err
} else if done {
return nil
}
ticker := time.NewTicker(pollInterval)No further issues found. The code looks ready for review from a correctness standpoint. Learn more about Cursor Agents |
Contributor
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@agneum could you please have a look at this (of course, we need to bring this to gitlab and test thoroughly) |
- Add problem/solution section with ASCII diagram - Add prerequisites section - Restructure quick start with numbered steps - Add configuration reference table - Simplify scheduling examples (Docker cron, K8s, ECS) - Add network requirements diagram - Add cost estimates - Improve troubleshooting section
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@cursor review the instructions in README, and scrutinize it -- any potential issues? |
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Note
Introduces a standalone
rds-refreshtool that clones RDS/Aurora from snapshots, updates DBLab source, triggers full refresh, and cleans up—plus Docker/CLI, configs, and docs.rds-refreshmain.go,refresher.go).dblab.go).rds.go).config.go,config.example.yaml).Dockerfile,Makefile, module files (go.mod,go.sum).README.md).engine/configs/rds-refresh.example.yaml.engine/go.mod/go.sumwith AWS SDK (v2) indirect dependencies.Written by Cursor Bugbot for commit 0104395. Configure here.