Enforce Settings on a Dependency

Sometimes your service requires specific configuration on a dependency — a Bitcoin node must have txindex=true, or ZMQ must be enabled. A cross-service task fires on the dependency whenever its config drifts from the required values.

Solution

In setupDependencies(), call sdk.action.createTask() targeting the dependency’s autoconfig action (imported from the dependency’s package). Pass input: { kind: 'partial', accept: [{ ... }], set: { ... } } — accept lists the partial inputs that satisfy the task and set is pre-filled when none match — and when: { condition: 'input-not-matches', once: false } so the task re-fires whenever the dependency’s config drifts. The autoconfig action must be exported by the dependency and added to your package.json dependencies.

Reference: Dependencies · Tasks

Examples

See startos/dependencies.ts in: fulcrum (txindex + ZMQ on Bitcoin), public-pool (ZMQ on Bitcoin)