Temporal Golang Pro V2

Temporal Go SDK (temporal-golang-pro)

Overview

This public intake copy packages plugins/antigravity-awesome-skills/skills/temporal-golang-pro from https://github.com/sickn33/antigravity-awesome-skills into the native Omni Skills editorial shape without hiding its origin.

Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow.

This intake keeps the copied upstream files intact and uses the external_source block in metadata.json plus ORIGIN.md as the provenance anchor for review.

Temporal Go SDK (temporal-golang-pro)

Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: Capabilities, Limitations.

When to Use This Skill

Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request.

• Designing Distributed Systems: When building microservices that require durable state and reliable orchestration.
• Implementing Complex Workflows: Using the Go SDK to handle long-running processes (days/months) or complex Saga patterns.
• Optimizing Performance: When workers need fine-tuned concurrency, mTLS security, or custom interceptors.
• Ensuring Reliability: Implementing idempotent activities, graceful error handling, and sophisticated retry policies.
• Maintenance & Evolution: Versioning running workflows or performing zero-downtime worker updates.
• Using Temporal with other SDKs (Python, Java, TypeScript) - refer to their specific -pro skills.

Operating Table

Workflow

This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow.

1. Gather Context: Proactively ask for:
2. Target Temporal Cluster (Cloud vs. Self-hosted) and Namespace.
3. Task Queue names and expected throughput.
4. Security requirements (mTLS paths, authentication).
5. Failure modes and desired retry/timeout policies.
6. Verify Determinism: Before suggesting workflow code, verify against these 5 Rules:
7. No native Go concurrency (goroutines).

Imported Workflow Notes

Imported: Step-by-Step Guide

1. Gather Context: Proactively ask for:
   • Target Temporal Cluster (Cloud vs. Self-hosted) and Namespace.
   • Task Queue names and expected throughput.
   • Security requirements (mTLS paths, authentication).
   • Failure modes and desired retry/timeout policies.
2. Verify Determinism: Before suggesting workflow code, verify against these 5 Rules:
   • No native Go concurrency (goroutines).
   • No native time (time.Now, time.Sleep).
   • No non-deterministic map iteration (must sort keys).
   • No direct external I/O or network calls.
   • No non-deterministic random numbers.
3. Implement Incrementally: Start with shared Protobuf/Data classes, then Activities, then Workflows, and finally Workers.
4. Leverage Resources: If the implementation requires advanced patterns (Sagas, Interceptors, Replay Testing), explicitly refer to the implementation playbook and testing strategies.

Imported: Overview

Expert-level guide for building resilient, scalable, and deterministic distributed systems using the Temporal Go SDK. This skill transforms vague orchestration requirements into production-grade Go implementations, focusing on durable execution, strict determinism, and enterprise-scale worker configuration.

Imported: Capabilities

Go SDK Implementation

• Worker Management: Deep knowledge of worker.Options, including MaxConcurrentActivityTaskPollers, WorkerStopTimeout, and StickyScheduleToStartTimeout.
• Interceptors: Implementing Client, Worker, and Workflow interceptors for cross-cutting concerns (logging, tracing, auth).
• Custom Data Converters: Integrating Protobuf, encrypted payloads, or custom JSON marshaling.

Advanced Workflow Patterns

• Durable Concurrency: Using workflow.Go, workflow.Channel, and workflow.Selector instead of native primitives.
• Versioning: Implementing safe code evolution using workflow.GetVersion and workflow.GetReplaySafeLogger.
• Large-scale Processing: Pattern for ContinueAsNew to manage history size limits (defaults: 50MB or 50K events).
• Child Workflows: Managing lifecycle, cancellation, and parent-child signal propagation.

Testing & Observability

• Testsuite Mastery: Using WorkflowTestSuite for unit and functional testing with deterministic time control.
• Mocking: Sophisticated activity and child workflow mocking strategies.
• Replay Testing: Validating code changes against production event histories.
• Metrics: Configuring Prometheus/OpenTelemetry exporters for worker performance tracking.

Examples

Example 1: Ask for the upstream workflow directly

Use @temporal-golang-pro-v2 to handle <task>. Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer.

Explanation: This is the safest starting point when the operator needs the imported workflow, but not the entire repository.

Example 2: Ask for a provenance-grounded review

Review @temporal-golang-pro-v2 against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why.

Explanation: Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection.

Example 3: Narrow the copied support files before execution

Use @temporal-golang-pro-v2 for <task>. Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding.

Explanation: This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default.

Example 4: Build a reviewer packet

Review @temporal-golang-pro-v2 using the copied upstream files plus provenance, then summarize any gaps before merge.

Explanation: This is useful when the PR is waiting for human review and you want a repeatable audit packet.

Imported Usage Notes

Imported: Examples

Example 1: Versioned Workflow (Deterministic)

// Note: imports omitted. Requires 'go.temporal.io/sdk/workflow', 'go.temporal.io/sdk/temporal', and 'time'.
func SubscriptionWorkflow(ctx workflow.Context, userID string) error {
    // 1. Versioning for logic evolution (v1 = DefaultVersion)
    v := workflow.GetVersion(ctx, "billing_logic", workflow.DefaultVersion, 2)

    for i := 0; i < 12; i++ {
        ao := workflow.ActivityOptions{
            StartToCloseTimeout: 5 * time.Minute,
            RetryPolicy: &temporal.RetryPolicy{MaximumAttempts: 3},
        }
        ctx = workflow.WithActivityOptions(ctx, ao)

        // 2. Activity Execution (Always handle errors)
        err := workflow.ExecuteActivity(ctx, ChargePaymentActivity, userID).Get(ctx, nil)
        if err != nil {
            workflow.GetLogger(ctx).Error("Payment failed", "Error", err)
            return err
        }

        // 3. Durable Sleep (Time-skipping safe)
        sleepDuration := 30 * 24 * time.Hour
        if v >= 2 {
            sleepDuration = 28 * 24 * time.Hour
        }

        if err := workflow.Sleep(ctx, sleepDuration); err != nil {
            return err
        }
    }
    return nil
}

Example 2: Full mTLS Worker Setup

func RunSecureWorker() error {
    // 1. Load Client Certificate and Key
    cert, err := tls.LoadX509KeyPair("client.pem", "client.key")
    if err != nil {
        return fmt.Errorf("failed to load client keys: %w", err)
    }

    // 2. Load CA Certificate for Server verification (Proper mTLS)
    caPem, err := os.ReadFile("ca.pem")
    if err != nil {
        return fmt.Errorf("failed to read CA cert: %w", err)
    }
    certPool := x509.NewCertPool()
    if !certPool.AppendCertsFromPEM(caPem) {
        return fmt.Errorf("failed to parse CA cert")
    }

    // 3. Dial Cluster with full TLS config
    c, err := client.Dial(client.Options{
        HostPort:  "temporal.example.com:7233",
        Namespace: "production",
        ConnectionOptions: client.ConnectionOptions{
            TLS: &tls.Config{
                Certificates: []tls.Certificate{cert},
                RootCAs:      certPool,
            },
        },
    })
    if err != nil {
        return fmt.Errorf("failed to dial temporal: %w", err)
    }
    defer c.Close()

    w := worker.New(c, "payment-queue", worker.Options{})
    w.RegisterWorkflow(SubscriptionWorkflow)

    if err := w.Run(worker.InterruptCh()); err != nil {
        return fmt.Errorf("worker run failed: %w", err)
    }
    return nil
}

Example 3: Selector & Signal Integration

func ApprovalWorkflow(ctx workflow.Context) (string, error) {
    var approved bool
    signalCh := workflow.GetSignalChannel(ctx, "approval-signal")

    // Use Selector to wait for multiple async events
    s := workflow.NewSelector(ctx)
    s.AddReceive(signalCh, func(c workflow.ReceiveChannel, _ bool) {
        c.Receive(ctx, &approved)
    })

    // Add 72-hour timeout timer
    s.AddReceive(workflow.NewTimer(ctx, 72*time.Hour).GetChannel(), func(c workflow.ReceiveChannel, _ bool) {
        approved = false
    })

    s.Select(ctx)

    if !approved {
        return "rejected", nil
    }
    return "approved", nil
}

Best Practices

Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution.

• ✅ Do: Always handle errors from ExecuteActivity and client.Dial.
• ✅ Do: Use workflow.Go and workflow.Channel for concurrency.
• ✅ Do: Sort map keys before iteration to maintain determinism.
• ✅ Do: Use activity.RecordHeartbeat for activities lasting > 1 minute.
• ✅ Do: Test logic compatibility using replayer.ReplayWorkflowHistoryFromJSON.
• ❌ Don't: Swallow errors with _ or log.Fatal in production workers.
• ❌ Don't: Perform direct Network/Disk I/O inside a Workflow function.

Imported Operating Notes

Imported: Best Practices

• ✅ Do: Always handle errors from ExecuteActivity and client.Dial.
• ✅ Do: Use workflow.Go and workflow.Channel for concurrency.
• ✅ Do: Sort map keys before iteration to maintain determinism.
• ✅ Do: Use activity.RecordHeartbeat for activities lasting > 1 minute.
• ✅ Do: Test logic compatibility using replayer.ReplayWorkflowHistoryFromJSON.
• ❌ Don't: Swallow errors with _ or log.Fatal in production workers.
• ❌ Don't: Perform direct Network/Disk I/O inside a Workflow function.
• ❌ Don't: Rely on native time.Now() or rand.Int().
• ❌ Don't: Apply this to simple cron jobs that don't require durability.

Troubleshooting

Problem: The operator skipped the imported context and answered too generically

Symptoms: The result ignores the upstream workflow in plugins/antigravity-awesome-skills/skills/temporal-golang-pro, fails to mention provenance, or does not use any copied source files at all. Solution: Re-open metadata.json, ORIGIN.md, and the most relevant copied upstream files. Check the external_source block first, then restate the provenance before continuing.

Problem: The imported workflow feels incomplete during review

Symptoms: Reviewers can see the generated SKILL.md, but they cannot quickly tell which references, examples, or scripts matter for the current task. Solution: Point at the exact copied references, examples, scripts, or assets that justify the path you took. If the gap is still real, record it in the PR instead of hiding it.

Problem: The task drifted into a different specialization

Symptoms: The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better. Solution: Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind.

Imported Troubleshooting Notes

Imported: Troubleshooting

• Panic: Determinism Mismatch: Usually caused by logic changes without workflow.GetVersion or non-deterministic code (e.g., native maps).
• Error: History Size Exceeded: History limit reached (default 50K events). Ensure ContinueAsNew is implemented.
• Worker Hang: Check WorkerStopTimeout and ensure all activities handle context cancellation.

Related Skills

• @00-andruia-consultant - Use when the work is better handled by that native specialization after this imported skill establishes context.
• @00-andruia-consultant-v2 - Use when the work is better handled by that native specialization after this imported skill establishes context.
• @10-andruia-skill-smith - Use when the work is better handled by that native specialization after this imported skill establishes context.
• @10-andruia-skill-smith-v2 - Use when the work is better handled by that native specialization after this imported skill establishes context.

Additional Resources

Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding.

• implementation-playbook.md
• testing-strategies.md

Imported Reference Notes

Imported: Resources

• Implementation Playbook - Deep dive into Go SDK patterns.
• Testing Strategies - Unit, Replay, and Integration testing for Go.
• Temporal Go SDK Reference
• Temporal Go Samples

Imported: Limitations

• Does not cover Temporal Cloud UI navigation or TLS certificate provisioning workflows.
• Does not cover Temporal Java, Python, or TypeScript SDKs; refer to their dedicated -pro skills.
• Assumes Temporal Server v1.20+ and Go SDK v1.25+; older SDK versions may have different APIs.
• Does not cover experimental Temporal features (e.g., Nexus, Multi-cluster Replication).
• Does not address global namespace configuration or multi-region failover setup.
• Does not cover Temporal Worker versioning via the worker-versioning feature flag (experimental).