Crate lambda_appsync_proc 

Procedural macros for the lambda-appsync type-safe AWS AppSync resolver framework.

This crate is not intended for direct use. Depend on lambda-appsync instead — it re-exports all macros from this crate under a stable, unified API.

Provided Macros

Macro	Kind	Purpose
make_appsync!	function-like	Generate the full AppSync resolver scaffolding from a GraphQL schema
make_handlers!	function-like	Generate handler dispatch glue for a set of operations
make_operation!	function-like	Generate a single typed operation from a GraphQL field definition
make_types!	function-like	Generate Rust types from GraphQL type definitions
appsync_operation	attribute	Annotate an async handler function as an AppSync operation resolver
appsync_lambda_main!	function-like	(feature: compat) Generate a main entry point compatible with the legacy single-resolver pattern

Each macro has detailed documentation on its own page, including syntax, options, and examples.

Feature Flags

• compat — Enables appsync_lambda_main! for backwards-compatible single-resolver Lambda entry points
• log — Enables log-based logging support in generated code
• env_logger — Enables env_logger initialisation in generated entry points
• tracing — Enables tracing-based instrumentation in generated code

Macros

appsync_lambda_main

Generates the code required to handle AWS AppSync Direct Lambda resolver events based on a GraphQL schema.

make_appsync

Convenience macro that combines make_types!, make_operation!, and make_handlers! into a single invocation.

make_handlers

Generates a Handlers trait and a DefaultHandlers struct for handling AWS AppSync Lambda events.

make_operation

Generates the Operation enum and its dispatch logic from a GraphQL schema file.

make_types

Generates Rust types (structs and enums) from a GraphQL schema file.

Attribute Macros

appsync_operation

Marks an async function as an AWS AppSync resolver operation, binding it to a specific Query, Mutation or Subscription operation defined in the GraphQL schema.