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ishad-m-i-m avatar thisaruguruge avatar

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graphql-federation-gateway's Issues

Bump Java version to 17

  • Update the code base to Java 17
  • Update the README
    • Update Java 11 to 17 details on the README
    • Update Steps to use the gateway section.

Additional Note

Do we need to release a .bat script file also? Current README only has instructions using the .sh file.
Or maybe we can stop using script files and just release the jar file and give the following instructions,

bal run graphql_federation_gateway.jar -CsupergraphPath="supergraph.graphql" -CoutputPath="service" -Cport="9000"
cd service
bal run

WDYT?

Service generation fails with an NPE when `@deprecated` is present on a field

Consider the following schema with @deprecated on the products: [Product!]! field on the Query type,

schema
  @link(url: "https://specs.apollo.dev/link/v1.0")
  @link(url: "https://specs.apollo.dev/join/v0.3", for: EXECUTION)
{
  query: Query
}

directive @join__enumValue(graph: join__Graph!) repeatable on ENUM_VALUE

directive @join__field(graph: join__Graph, requires: join__FieldSet, provides: join__FieldSet, type: String, external: Boolean, override: String, usedOverridden: Boolean) repeatable on FIELD_DEFINITION | INPUT_FIELD_DEFINITION

directive @join__graph(name: String!, url: String!) on ENUM_VALUE

directive @join__implements(graph: join__Graph!, interface: String!) repeatable on OBJECT | INTERFACE

directive @join__type(graph: join__Graph!, key: join__FieldSet, extension: Boolean! = false, resolvable: Boolean! = true, isInterfaceObject: Boolean! = false) repeatable on OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT | SCALAR

directive @join__unionMember(graph: join__Graph!, member: String!) repeatable on UNION

directive @link(url: String, as: String, for: link__Purpose, import: [link__Import]) repeatable on SCHEMA

scalar join__FieldSet

enum join__Graph {
  PRODUCTS @join__graph(name: "products", url: "http://localhost:9091")
}

scalar link__Import

enum link__Purpose {
  """
  `SECURITY` features provide metadata necessary to securely resolve fields.
  """
  SECURITY

  """
  `EXECUTION` features provide metadata necessary for operation execution.
  """
  EXECUTION
}

type Product
  @join__type(graph: PRODUCTS, key: "id")
{
  id: ID!
  name: String!
  description: String!
  price: Float!
}

type Query
  @join__type(graph: PRODUCTS)
{
  products: [Product!]! @deprecated
  product(id: ID!): Product
}

Then running the following command,

bal run .\graphql_federation_gateway.jar -CsupergraphPath="supergraphs/0.1.3.graphql" -CoutputPath="generated_gateway"

Results in,

error: java.lang.NullPointerException {"message":"Cannot invoke "graphql.schema.GraphQLAppliedDirectiveArgument.getArgumentValue()" because the return value of "graphql.schema.GraphQLAppliedDirective.getArgument(String)" is null"}
        at xlibb.graphql_federation_gateway.0:generateGateway(main.bal:25)
           xlibb.graphql_federation_gateway.0:main(main.bal:16)

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