Driver Assignment Service
Component Detail
Description
Core business logic service for creating and managing driver assignments. Validates fee amounts, links assignments to contacts and expense records, and coordinates with the expense approval workflow for assignments above configured thresholds.
driver-assignment-service
Summaries
The Driver Assignment Service is the core engine that records, validates, and manages driver fee payments within the organization's coordination workflow. By enforcing fee validation rules, linking assignments to the correct contacts and expense records, and automatically routing high-value assignments into the expense approval workflow, this service ensures payment accuracy and policy compliance without requiring manual coordinator intervention. It provides the business with a consistent, auditable record of all driver compensation, reducing the risk of unauthorized payments, fee discrepancies, and compliance gaps. This directly supports cost control objectives and strengthens the organization's ability to demonstrate responsible financial management of its driver network.
The Driver Assignment Service is a medium-complexity backend service with two upstream dependencies: driver-assignment-repository and org-feature-flag-service. Its seven interfaces span the full CRUD lifecycle plus validation, and the integration with the expense approval workflow for above-threshold assignments introduces a cross-team scheduling dependency that must be resolved early. Development planning should account for: validation logic unit tests, repository integration tests, and workflow-trigger tests for threshold-crossing assignments. The feature flag dependency means all behavior must be tested in both enabled and disabled org contexts.
Primary delivery risk: changes to the expense approval workflow's API contract could delay integration. Recommend an early contract review with the expense management team to lock interfaces before parallel development begins.
The Driver Assignment Service is a backend service managing the full lifecycle of driver_assignment and driver_fee records through seven interfaces: createDriverAssignment(contactId, feeAmount, date), getAssignmentById, getAssignmentsByContact, getAssignmentsByCoordinator, updateAssignment, deleteAssignment, and validateAssignmentData. It depends on driver-assignment-repository for all persistence operations and org-feature-flag-service to conditionally apply driver-specific business rules. The createDriverAssignment flow validates fee amount and required fields via validateAssignmentData, persists the record, and conditionally routes to the expense approval workflow when the fee exceeds the configured threshold. All write operations should be transactional to maintain consistency between assignment creation and workflow triggering.
The service is not shared across features and carries medium complexity primarily due to the conditional expense workflow integration path.
Responsibilities
- Create and persist driver assignment records
- Validate fee amount and required fields
- Link assignment to expense approval workflow when applicable
- Retrieve assignment history for a coordinator or contact
Interfaces
createDriverAssignment(contactId, feeAmount, date)
getAssignmentById(assignmentId)
getAssignmentsByContact(contactId)
getAssignmentsByCoordinator(coordinatorId)
updateAssignment(assignmentId, updates)
deleteAssignment(assignmentId)
validateAssignmentData(data)
Relationships
Dependencies (2)
Components this component depends on
Related Data Entities (3)
Data entities managed by this component