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WIP
When using ApolloServer in a custom handler, an internal server error is encountered in the handler when transforming the query
The graph that is transformed (w/ transform-federation)
accountsreturns valid data, and you can see that while there are errors, results forusersare present at the top level, but they arenullundertopProducts.Response
{ "errors": [ { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 3, "column": 3 } ], "path": [ "topProducts", 0, "reviews", 0, "author", "username" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 4, "column": 3 } ], "path": [ "topProducts", 0, "reviews", 0, "author", "name" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 3, "column": 3 } ], "path": [ "topProducts", 0, "reviews", 1, "author", "username" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 4, "column": 3 } ], "path": [ "topProducts", 0, "reviews", 1, "author", "name" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 3, "column": 3 } ], "path": [ "topProducts", 1, "reviews", 0, "author", "username" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 4, "column": 3 } ], "path": [ "topProducts", 1, "reviews", 0, "author", "name" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 3, "column": 3 } ], "path": [ "topProducts", 2, "reviews", 0, "author", "username" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } }, { "message": "Cannot read property 'Query' of undefined", "locations": [ { "line": 4, "column": 3 } ], "path": [ "topProducts", 2, "reviews", 0, "author", "name" ], "extensions": { "code": "INTERNAL_SERVER_ERROR", "exception": { "stacktrace": [ "TypeError: Cannot read property 'Query' of undefined", " at resolveReference (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-mesh/transform-federation/index.js:69:72)", " at /Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:849:32", " at Array.map (<anonymous>)", " at executeDelegationStage (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:843:68)", " at mergeFields (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:833:24)", " at resolveExternalObject (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:954:12)", " at resolveExternalValue (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:912:16)", " at defaultMergedResolver (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/@graphql-tools/delegate/index.js:1271:12)", " at field.resolve (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/apollo-server-core/dist/utils/schemaInstrumentation.js:52:26)", " at resolveField (/Users/cory.odaniel/Workspace/coryodaniel/federated-absinthe/node_modules/graphql/execution/execute.js:466:18)" ] } } } ], "data": { "users": [ { "id": "1", "username": "@ada", "name": "Ada Lovelace", "reviews": [ { "id": "1", "body": "Love it!", "product": { "inStock": true, "name": "Table", "price": 899, "shippingEstimate": 50, "upc": "1", "weight": 100 } }, { "id": "2", "body": "Too expensive.", "product": { "inStock": false, "name": "Couch", "price": 1299, "shippingEstimate": 0, "upc": "2", "weight": 1000 } } ] }, { "id": "2", "username": "@complete", "name": "Alan Turing", "reviews": [ { "id": "3", "body": "Could be better.", "product": { "inStock": true, "name": "Chair", "price": 54, "shippingEstimate": 25, "upc": "3", "weight": 50 } }, { "id": "4", "body": "Prefer something else.", "product": { "inStock": true, "name": "Table", "price": 899, "shippingEstimate": 50, "upc": "1", "weight": 100 } } ] } ], "topProducts": [ { "inStock": true, "name": "Table", "price": 899, "shippingEstimate": 50, "upc": "1", "weight": 100, "reviews": [ { "id": "1", "body": "Love it!", "author": { "id": "1", "username": null, "name": null } }, { "id": "4", "body": "Prefer something else.", "author": { "id": "2", "username": null, "name": null } } ] }, { "inStock": false, "name": "Couch", "price": 1299, "shippingEstimate": 0, "upc": "2", "weight": 1000, "reviews": [ { "id": "2", "body": "Too expensive.", "author": { "id": "1", "username": null, "name": null } } ] }, { "inStock": true, "name": "Chair", "price": 54, "shippingEstimate": 25, "upc": "3", "weight": 50, "reviews": [ { "id": "3", "body": "Could be better.", "author": { "id": "2", "username": null, "name": null } } ] } ] } }