Re-contract a stateful telematics integration without confusing a newer repository name with a confirmed endpoint or write-compatible product generation.
The deprecated source explicitly declares the Mappls InTouch repository as its successor, but that declaration does not prove endpoint, schema, authentication, state, write, or entitlement compatibility. Obtain the exact InTouch contract and authority from the product owner.
Legacy sources are fully covered. Candidate links expose the closest public evidence and its maturity; they do not silently upgrade it to an entitlement or support declaration.
mapmyindia-intouch-rest-apismappls-intouch-rest-apisResolve each dimension explicitly. “It compiled” does not prove identity, lifecycle, failure, privacy, or operational compatibility.
Asset, trip, event, and geofence identifiers and transitions are defined by historical contracts.
Map every aggregate, state, transition, terminal condition, and retention rule to the issued contract.
A signed state-transition matrix and reconciliation test per resource type.
Historical credentials and hosts must not be replayed into a similar-looking Mappls endpoint.
Use a separately scoped InTouch credential and exact entitled host only.
Negative cross-generation credential tests plus bounded read conformance.
Retries may have been implemented as transport retries.
Require stable idempotency and lookup-based reconciliation before retrying commands.
Timeout-after-commit, duplicate delivery, stale version, and partial-event failure injection.
Do not advance on calendar alone. Each stage creates evidence that makes the next one safe and reversible.
Inventory every InTouch resource or operation, package, host, credential class, callback, and owner before changing production.
Resolve the exact entitled package or endpoint with Mappls and verify its supported toolchain, region, quotas, authentication, and lifecycle.
Move InTouch resource or operation calls behind a narrow application-owned interface without changing product behavior.
Replay approved fixtures and shadow eligible reads while preventing duplicate writes or user-visible duplicate state transitions.
Release to internal users and bounded cohorts with health gates, ownership, automatic stop conditions, and immutable version evidence.
Remove legacy credentials and dependencies only after rollback and audit retention obligations expire.
These examples deliberately model the seam and verification pattern—not unconfirmed package symbols. Implement the adapters only after the exact target contract is issued.
type Command<T> = {
aggregateId: string;
expectedVersion: number;
idempotencyKey: string;
payload: T;
};
type Outcome = { providerId: string; version: number; state: string };
interface WorkforceProvider {
assign(command: Command<{ workerId: string; taskId: string }>): Promise<Outcome>;
reconcile(aggregateId: string): Promise<Outcome | null>;
}
// Never shadow a write. Send it through one provider, persist the outcome, then
// reconcile an ambiguous timeout by aggregate/idempotency identity before retry.The candidate and exact package/endpoint versions are approved by the owning Mappls product team for the target account and region.
Journey-level contract tests pass on every supported device, browser, architecture, and release build—not only a debug simulator.
Security, privacy, accessibility, performance, quota, observability, and support owners accept measured differences.
A bounded cohort completes the agreed observation window without an unresolved severity-one or severity-two regression.
Stopping traffic is not enough. Recover durable resources, sessions, events, and in-flight commands without duplicates or hidden divergence.
Prepare support packetKeep the previous signed artifact, dependency lock, configuration, and credential valid until the observation window closes.
Make the provider selection server- or release-controlled; define automatic stop signals and one accountable rollback owner.
For durable state, prove backward-readable records or a reversible data migration before allowing candidate writes.
After rollback, reconcile in-flight requests and resources by stable identifiers instead of replaying commands blindly.