service-migration

Migrating Payment Service to a New Environment

Moving a service between environments without assessing its dependencies first risks breaking downstream consumers. This workflow assesses payment-service (3 dependencies, 2 data stores), replicates it to the target environment, cuts over traffic, and validates all endpoints respond correctly.

Workflow

service, sourceEnv, targetEnv
            |
            v
+--------------+     +------------------+     +----------------+     +----------------+
| sm_assess    | --> | sm_replicate     | --> | sm_cutover     | --> | sm_validate    |
+--------------+     +------------------+     +----------------+     +----------------+
  ASSESS-1338         service replicated      traffic switched        all endpoints
  3 dependencies,     to target               to new environment      responding
  2 data stores

Workers

AssessWorker -- Assesses payment-service: finds 3 dependencies and 2 data stores. Returns assessId: "ASSESS-1338".

ReplicateWorker -- Replicates the service to the target environment. Returns replicate: true.

CutoverWorker -- Switches traffic to the new environment. Returns cutover: true.

ValidateWorker -- Confirms all endpoints are responding correctly. Returns validate: true.

Tests

2 unit tests cover the service migration pipeline.

Running

See ../../RUNNING.md for setup and execution instructions.