Topology Json Author

Overview

Convert architecture intent into valid, deterministic TopologyJSON that the DSDS simulation engine can run. Produce complete topology objects, explicit assumptions, and clear validation notes before simulation starts.

Workflow

1. Collect inputs

• Read the architecture description, existing topology JSON, or canvas export.
• Identify explicit constraints: latency goals, availability/SLOs, providers, workload shape, and failure hypotheses.
• Capture unknowns in an assumptions list instead of leaving fields implicit.

2. Build the skeleton first

• Create id, name, version, global, nodes, edges, workload, faults, invariants, and scenarios.
• Set deterministic controls immediately: global.seed, global.simulationDuration, and global.warmupDuration.

3. Materialize nodes and edges

• Map every component to a valid type from the DSDS taxonomy.
• Populate node queueing and processing basics: queue.workers, queue.capacity, processing.distribution, and processing.timeout.
• Populate edge transport basics: mode, protocol, latency.distribution, bandwidth, and packetLossRate.

4. Add workload, faults, and invariants

• Choose a workload pattern that matches traffic behavior (constant, poisson, spike, diurnal, bursty, sawtooth, replay).
• Add high-signal fault specs first; expand only if needed.
• Encode invariants tied to the user's goals (availability, latency, consistency, security).

5. Validate before returning

• Enforce structural and semantic checks from references/topology-json-rules.md.
• Return the final JSON plus assumptions and validation warnings.

Output format

Use this order unless the user asks otherwise:

1. TopologyJSON
2. Assumptions
3. Validation notes
4. Follow-up questions (only if blockers remain)

References

• Read references/topology-json-rules.md for required fields, DSDS checks, and a minimal starter template.
• Use these repo sources as ground truth:
• planning/IMPLEMENTATION_PLAN.md (Phase 0 contract)
• schema/complete_simulator_schema.ts (type vocabulary)
• canonical-catalogue/*.csv (taxonomy, failures, invariants)