feat(event-handler): add single resolver functionality for AppSync GraphQL API#3999

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arnabrahman wants to merge 49 commits intoaws-powertools:mainfrom

arnabrahman:1166-graphql-resolver

Commits on Jun 26, 2025

feat: implement `RouteHandlerRegistry` for managing GraphQL route handlers
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feat: add type guard for AppSync GraphQL event validation
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refactor: simplify handler function signatures and update type definitions for GraphQL events
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refactor: remove wrong `result` property check from AppSync GraphQL event type guard
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feat: implement Router class for managing `Query` events for appsync graphql
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feat: add `onMutation` method for handling GraphQL Mutation events in Router class
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feat: implement AppSyncGraphQLResolver class to handle onQuery and onMutation events
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doc: `#executeSingleResolver` function
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feat: add warning for unimplemented batch resolvers in AppSyncGraphQLResolver
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feat: enhance `RouteHandlerRegistry` to log handler registration and resolution details
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feat: add `onQueryEventFactory` and `onMutationEventFactory` to create event objects for GraphQL operations
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feat: add unit tests for `AppSyncGraphQLResolver` class to validate event handling and error formatting
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feat: add unit tests for `RouteHandlerRegistry` to validate handler registration and resolution behavior
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feat: add unit tests for `Router` class to validate resolver registration and logging behavior
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feat: add test for nested resolvers registration using the decorator pattern in `Router` class
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feat: enhance documentation for `resolve` method in `AppSyncGraphQLResolver` class with examples and parameter descriptions
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chore: warning message for batch resolver
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fix: return query handler if found
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fix: correct warning message for batch resolver in AppSyncGraphQLResolver tests
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fix: update debug messages to reflect resolver registration format in RouteHandlerRegistry and Router tests
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fix: update resolver not found messages for consistency in AppSyncGraphQLResolver and RouteHandlerRegistry
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fix: doc for Router
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refactor: remove unused cache and warning set from `RouteHandlerRegistry`
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fix: update documentation for resolve method in RouteHandlerRegistry
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refactor: remove redundant test for cached route handler evaluation in RouteHandlerRegistry
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fix: update import path for Router in Router.test.ts
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fix: update debug messages to include event type in RouteHandlerRegistry and Router
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fix: update terminology from "handler" to "resolver" in RouteHandlerRegistry and related tests
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fix: refactor logger initialization and import structure in Router and related types
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fix: enhance type safety for onQuery and onMutation handlers with generic parameters
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refactor: unify resolver registration by replacing onQuery and onMutation with a single resolver method
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test: replace onQuery and onMutation methods with a unified resolver method in tests
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fix: enhance type parameters for resolver handlers and route options
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refactor: resolve PR feedbacks and replace onQuery and onMutation event factories with a unified onGraphqlEventFactory in tests
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refactor: consolidate onQuery and onMutation event factories into a single onGraphqlEventFactory
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feat: add scalar types utility functions and corresponding tests
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fix: remove unnecessary checks in isAppSyncGraphQLEvent type guard
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refactor: update AppSyncGraphQLResolver to use unified resolver method for handling GraphQL events
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refactor: update test descriptions for clarity on Query and Mutation handlers
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feat: enhance AppSyncGraphQLResolver to pass context to resolver handlers and update tests for event and context access
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refactor: remove unused imports in AppSyncGraphQLResolver test file
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fix: remove duplicate assertion for console.debug in AppSyncGraphQLResolver test
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refactor: replace AppSyncGraphQLEvent with AppSyncResolverEvent for improved type consistency
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refactor: simplify development mode check by using isDevMode utility function
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fix: update event type in resolver handler functions for improved type safety
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feat: add optional parameters to resolve method for enhanced flexibility
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Commits on Jun 29, 2025