{"schemaVersion":"mappls.journey-workshop.v1","slug":"fleet-geofence-exception","journeySlug":"fleet-geofence-exception","title":"Build Fleet geofence exception","summary":"An eight-lab, source-bounded workshop for the complete geofence case lifecycle: exact commands and events, durable records, replay, concurrency, unknown outcomes, hostile fixtures, a maintained capstone, and production exit evidence.","duration":"2 hr 10 min","level":"Advanced","productSlug":"intouch-telematics","stateModel":"stateful","aggregate":"geofence case","actorCount":4,"stateCount":6,"transitionCount":5,"eventCount":5,"sourceGuideSlugs":["mappls-intouch-rest-apis","mapmyindia-intouch-web-plugins"],"contractSlugs":["intouch-post-geofences-create-a-new-geofence","intouch-get-geofences-id-get-a-single-or-multiple-geofence-s","intouch-get-geofences-activities-get-all-the-activities-done-by-devices-w-r-t-various-geofences","intouch-post-geofences-id-update-a-geofence","intouch-delete-geofences-id-delete-a-geofence"],"relatedTutorialSlugs":[],"sample":{"slug":"fleet-geofence","name":"Fleet Geofence Monitor","downloadPath":"/downloads/fleet-geofence.zip","checksumPath":"/downloads/fleet-geofence.zip.sha256","verifiedTestCount":7,"runCommand":"npm test --workspace @mappls-example/fleet-geofence"},"labs":[{"slug":"model-lifecycle","title":"Model the lifecycle before the UI","duration":"15 min","objective":"Turn the geofence case blueprint into an explicit aggregate boundary owned by the application.","build":["draft: Geometry, rule semantics, asset scope, schedule, and notification policy are being validated.","active: The versioned zone is deployed and evaluated against an explicit asset and schedule scope.","breached: A debounced enter, exit, dwell, or prohibited-presence event created an operational case.","acknowledged: A named operator owns investigation, severity, and response deadline.","resolved: The outcome and evidence are recorded without erasing the initiating activity.","retired: The zone no longer generates new cases but historical activities remain queryable."],"prove":["Every persisted state exists in the reviewed blueprint.","Terminal states reject ordinary forward commands.","Recovery text is operational guidance, not another hidden state."]},{"slug":"command-event-contract","title":"Implement every command and event pair","duration":"20 min","objective":"Make intent, actor authority, allowed source state, committed state, and emitted fact reviewable together.","build":["publish_geofence by Fleet administrator: draft → active; emit geofence.published.","record_breach by Telematics service: active | breached → breached; emit geofence.breached.","acknowledge_case by Operations controller: breached → acknowledged; emit geofence_case.acknowledged.","resolve_case by Operations controller: acknowledged → resolved; emit geofence_case.resolved.","retire_geofence by Fleet administrator: draft | active → retired; emit geofence.retired."],"prove":["publish_geofence resolves to fleet-geofence-exception-geofence-published without claiming a provider webhook payload.","record_breach resolves to fleet-geofence-exception-geofence-breached without claiming a provider webhook payload.","acknowledge_case resolves to fleet-geofence-exception-geofence-case-acknowledged without claiming a provider webhook payload.","resolve_case resolves to fleet-geofence-exception-geofence-case-resolved without claiming a provider webhook payload.","retire_geofence resolves to fleet-geofence-exception-geofence-retired without claiming a provider webhook payload."]},{"slug":"durable-records","title":"Persist restart-safe records","duration":"15 min","objective":"Separate business identity, provider evidence, command receipts, immutable facts, audit, and downstream delivery.","build":["Geofence definition: Versioned geometry, schedule, assets, and rule policy. Keys: ruleId, version, providerId, geometryHash, assetScope, status.","Source activity: Immutable enter, exit, dwell, or presence evidence. Keys: activityId, ruleVersion, deviceId, eventTime, position.","Exception case: Human ownership, SLA, disposition, and notification state. Keys: caseId, activityIds, severity, owner, status, resolution."],"prove":["Process restart restores the same aggregate version and command result.","Opaque SDK or native UI objects are not durable records.","Provider evidence and application decisions remain distinguishable."]},{"slug":"concurrency-replay","title":"Make concurrency and replay deterministic","duration":"15 min","objective":"Apply optimistic expected versions and aggregate-scoped idempotency before executing effects.","build":["Geometry and coordinate reference are validated before publication.","Every activity names the geofence definition version that evaluated it.","Noise suppression never deletes raw source observations.","One provider activity creates at most one operational case per rule version.","Retirement stops new evaluation while preserving case and audit history."],"prove":["An exact replay returns the first result without another event or version.","A reused key with different intent conflicts.","A stale expected version changes no durable truth."]},{"slug":"effects-reconciliation","title":"Control effects and unknown outcomes","duration":"15 min","objective":"Commit outbox intent atomically, execute effects outside the transaction, and reconcile ambiguous results.","build":["GPS jitter creates repeated boundary crossings: detect with Alternating activities occur inside the configured hysteresis time and distance. Recover with Debounce into one case while retaining raw activities for review.","Rule update races with incoming activity: detect with The activity cites an earlier provider or internal definition version. Recover with Evaluate and display it under the cited version; never reinterpret history silently.","Provider deletion times out: detect with Internal retirement is pending and provider reconciliation is unknown. Recover with Retry the same delete identity and keep the rule visibly retiring until confirmed.","Notification delivery fails: detect with The case exists but the notification outbox remains pending. Recover with Retry independently and escalate by age; do not create another case."],"prove":["A timeout remains an unknown outcome until identity-based reconciliation completes.","Retries are bounded and preserve the original business and command identities.","Dead-letter or manual review retains the entire attempt history."]},{"slug":"hostile-scenarios","title":"Run all hostile fixture scenarios","duration":"15 min","objective":"Exercise the success path plus replay, concurrency, state, and response-loss failures without an account.","build":["Complete journey: Commit the shortest reviewed success path to the journey-specific operating target.","Idempotent replay: Repeat one command identity and prove that version, event identity, and side effects do not duplicate.","Stale version: Reject a command based on an outdated aggregate version without changing durable truth.","Invalid transition: Reject a known command when the current state does not permit it.","Unknown outcome recovery: Reconcile after a lost response, then replay the original command identity safely."],"prove":["All fixture checks pass for all five scenarios.","Rejected commands emit no event and do not increment version.","The fixture makes zero provider calls and exposes no write tool."]},{"slug":"maintained-capstone","title":"Trace the Fleet Geofence Monitor capstone","duration":"20 min","objective":"Follow the maintained source through domain rules, adapter seam, repository transaction, HTTP boundary, UI evidence, and restart test.","build":["Run the app's declared test suite (7 tests).","Run fixture mode without a credential.","Inspect audit and outbox evidence after each transition.","Restart the process and continue the same aggregate."],"prove":["The downloadable archive checksum verifies before execution.","The capstone covers the journey target without inventing provider completion.","Browser and HTTP surfaces report the same durable version."]},{"slug":"production-exit","title":"Qualify the real integration boundary","duration":"15 min","objective":"Replace only reviewed adapter seams and collect independent production evidence without weakening application invariants.","build":["Activities per device and rule before and after debouncing","Case acknowledgement and resolution time","Rules with provider/internal version drift","Notifications pending, retrying, and dead-lettered","Geometry validation and publication failures","Retired rules still receiving activity"],"prove":["Exact product entitlement and regional behavior are validated separately.","Provider contract tests cover success, rejection, throttling, timeout, and unknown outcome.","Security, privacy, operations, rollback, and product owners approve exact evidence.","Fixture completion is never presented as provider or production completion."]}],"codeSamples":[{"language":"typescript","label":"TypeScript aggregate boundary","code":"type State = \"draft\" | \"active\" | \"breached\" | \"acknowledged\" | \"resolved\" | \"retired\";\ntype CommandName = \"publish_geofence\" | \"record_breach\" | \"acknowledge_case\" | \"resolve_case\" | \"retire_geofence\";\n\ntype Command = {\n  name: CommandName;\n  aggregateId: string;\n  expectedVersion: number;\n  idempotencyKey: string;\n};\n\nconst transitions = {\n  \"publish_geofence\": { from: [\"draft\"], to: \"active\", event: \"geofence.published\" },\n  \"record_breach\": { from: [\"active\", \"breached\"], to: \"breached\", event: \"geofence.breached\" },\n  \"acknowledge_case\": { from: [\"breached\"], to: \"acknowledged\", event: \"geofence_case.acknowledged\" },\n  \"resolve_case\": { from: [\"acknowledged\"], to: \"resolved\", event: \"geofence_case.resolved\" },\n  \"retire_geofence\": { from: [\"draft\", \"active\"], to: \"retired\", event: \"geofence.retired\" },\n} as const;\n\nexport function decide(current: { state: State | null; version: number }, command: Command) {\n  const rule = transitions[command.name];\n  if (command.expectedVersion !== current.version) throw new Error(\"version_conflict\");\n  if (!rule.from.includes(current.state as never)) throw new Error(\"invalid_transition\");\n  return {\n    state: rule.to as State,\n    version: current.version + 1,\n    event: rule.event,\n    idempotencyKey: command.idempotencyKey,\n  };\n}\n\n// Persist the result, immutable event, audit row, and outbox intent atomically.\n// Store the first result by idempotencyKey before executing another effect."},{"language":"sql","label":"SQL durability skeleton","code":"CREATE TABLE journey_fleet_geofence_exception (\n  aggregate_id text PRIMARY KEY,\n  state text NOT NULL,\n  version bigint NOT NULL CHECK (version > 0),\n  updated_at timestamptz NOT NULL DEFAULT now()\n);\n\nCREATE TABLE journey_fleet_geofence_exception_commands (\n  aggregate_id text NOT NULL REFERENCES journey_fleet_geofence_exception(aggregate_id),\n  idempotency_key text NOT NULL,\n  request_hash text NOT NULL CHECK (length(request_hash) = 64),\n  committed_version bigint NOT NULL,\n  result_json jsonb NOT NULL,\n  PRIMARY KEY (aggregate_id, idempotency_key)\n);\n\nCREATE TABLE journey_fleet_geofence_exception_outbox (\n  event_id text PRIMARY KEY,\n  aggregate_id text NOT NULL,\n  aggregate_version bigint NOT NULL,\n  event_type text NOT NULL,\n  payload jsonb NOT NULL,\n  published_at timestamptz\n);\n\n-- In one transaction: lock aggregate, compare version, decide, append audit/event,\n-- insert the outbox row, and remember the exact command result."},{"language":"curl","label":"Complete fixture journey","code":"curl --request POST 'https://developer.mappls.com/api/journey-simulator' \\\n+  --header 'content-type: application/json' \\\n+  --data '{\"journey\":\"fleet-geofence-exception\",\"scenario\":\"complete-journey\"}'"},{"language":"curl","label":"Unknown-outcome drill","code":"curl --request POST 'https://developer.mappls.com/api/journey-simulator' \\\n+  --header 'content-type: application/json' \\\n+  --data '{\"journey\":\"fleet-geofence-exception\",\"scenario\":\"unknown-outcome\"}'\n\n# Reconcile geofencecase identity and the original idempotency key.\n# Never mint a replacement key merely because the response was lost."},{"language":"json","label":"First command envelope","code":"{\n  \"command\": \"publish_geofence\",\n  \"aggregateId\": \"fixture-fleet-geofence-exception-001\",\n  \"expectedVersion\": 1,\n  \"idempotencyKey\": \"cmd_fleet-geofence-exception_001\",\n  \"evidenceBoundary\": \"application-owned-workshop\"\n}"}],"simulationScenarios":[{"slug":"complete-journey","title":"Complete journey","outcome":"Commit the shortest reviewed success path to the journey-specific operating target.","href":"/tools/journey-lab?journey=fleet-geofence-exception&scenario=complete-journey#lab"},{"slug":"idempotent-replay","title":"Idempotent replay","outcome":"Repeat one command identity and prove that version, event identity, and side effects do not duplicate.","href":"/tools/journey-lab?journey=fleet-geofence-exception&scenario=idempotent-replay#lab"},{"slug":"stale-version","title":"Stale version","outcome":"Reject a command based on an outdated aggregate version without changing durable truth.","href":"/tools/journey-lab?journey=fleet-geofence-exception&scenario=stale-version#lab"},{"slug":"invalid-transition","title":"Invalid transition","outcome":"Reject a known command when the current state does not permit it.","href":"/tools/journey-lab?journey=fleet-geofence-exception&scenario=invalid-transition#lab"},{"slug":"unknown-outcome","title":"Unknown outcome recovery","outcome":"Reconcile after a lost response, then replay the original command identity safely.","href":"/tools/journey-lab?journey=fleet-geofence-exception&scenario=unknown-outcome#lab"}],"acceptance":["All 5 reviewed transitions are implemented with actor and source-state checks.","All 5 application event identities are immutable and versioned.","Exact replay, idempotency conflict, stale version, invalid transition, and unknown outcome are tested.","Aggregate, event, audit, command result, and outbox intent commit atomically.","The Fleet Geofence Monitor capstone passes 7 declared tests after archive checksum verification.","Provider entitlement, payload, callback, completion, and production behavior remain independently evidenced."],"sourceBoundary":["The journey blueprint and application event contracts are implementation guidance, not Mappls provider payload specifications.","Only linked normalized contracts and source guides may define provider request syntax; empty evidence is never backfilled.","The simulator and maintained capstone operate in explicit fixture mode and make no entitlement claim.","Credentials, precise production payloads, opaque native objects, and provider secrets stay outside workshop inputs and durable examples."],"releaseBoundary":"Workshop completion proves an application-owned reliability design only. Production still requires issued entitlement, exact adapter contract tests, regional and quota validation, security/privacy review, operational drills, and independent release approval.","websitePath":"/journeys/fleet-geofence-exception/workshop","apiPath":"/api/journey-workshops?journey=fleet-geofence-exception","providerCalls":0,"writesExposed":false}