graphql-tools (Rust)

Documentation | Crate | GitHub

Note: this crate is still under development (see roadmap below)

The graphql_tools crate implements tooling around GraphQL for Rust libraries. Most of the tools are based on traits and structs implemented in graphql_parser crate.

The goal of this library is to create a common layer of tools that has similar/improved APIs to graphql-js reference implementation and graphql-tools from the JS/TS ecosystem.

Getting Started

Add graphql-tools as a dependency of your project by adding the following to your Cargo.toml file:

[dependencies]
graphql-tools = "..."

Or, if you are using cargo-edit:

cargo add graphql-tools

Roadmap and progress

• Better documentation
• AST Visitor for GraphQL schema (graphql_parser::schema::Document)
• AST Visitor for GraphQL operations (graphql_parser::operation::Document)
• AST Visitor with TypeInfo
• AST tools (ongoing)
• struct extensions
• GraphQL Validation engine
• Validation rules
• GraphQL operations transformer

If you have an idea / missing feature, feel free to open an issue / start a GitHub discussion!

Validation Rules

This comparison is based on graphql-js refernece implementation.

• ExecutableDefinitions (not actually needed)
• UniqueOperationNames
• LoneAnonymousOperation
• SingleFieldSubscriptions
• KnownTypeNames
• FragmentsOnCompositeTypes
• VariablesAreInputTypes
• LeafFieldSelections
• FieldsOnCorrectType
• UniqueFragmentNames
• KnownFragmentNames
• NoUnusedFragments
• PossibleFragmentSpreads
• NoFragmentCycles
• UniqueVariableNames
• NoUndefinedVariables
• NoUnusedVariables
• KnownDirectives
• UniqueDirectivesPerLocation
• KnownArgumentNames
• UniqueArgumentNames
• ValuesOfCorrectType
• ProvidedRequiredArguments
• VariablesInAllowedPosition
• OverlappingFieldsCanBeMerged
• UniqueInputFieldNames (blocked by graphql-rust/graphql-parser#59)