Unhandled exception. Restler.Compiler.UnsupportedType: Exception of type 'Restler.Compiler.UnsupportedType' was thrown.

[sm1279]

Unhandled exception. Restler.Compiler.UnsupportedType: Exception of type 'Restler.Compiler.UnsupportedType' was thrown. at Restler.Compiler.SwaggerVisitors.processProperty(String propertyName, JsonSchemaProperty property, FSharpOption1 propertyPayloadExampleValue, Boolean generateFuzzablePayload, Boolean trackParameters, FSharpOption1 jsonPropertyMaxDepth, FSharpList1 parents, SchemaCache schemaCache, FSharpFunc2 cont) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\SwaggerVisitors.fs:line 495 at Restler.Compiler.SwaggerVisitors.declaredPropertyParameters@610.Invoke(KeyValuePair2 item) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\SwaggerVisitors.fs:line 616 at Microsoft.FSharp.Collections.Internal.IEnumerator.choose@171.System-Collections-IEnumerator-MoveNext() in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 179 at Microsoft.FSharp.Core.CompilerServices.RuntimeHelpers.takeInner@266[T,TResult](ConcatEnumerator2 x, Unit unitVar0) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seqcore.fs:line 268 at Microsoft.FSharp.Collections.SeqModule.oneStepTo@987[T](IEnumerable1 source, List1 prefix, FSharpRef1 enumeratorR, Int32 i) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 996 at Microsoft.FSharp.Collections.SeqModule.action@4164-1[T](IEnumerable1 source, List1 prefix, FSharpRef1 enumeratorR, Int32 i, Unit unitVar0) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 1011 at Microsoft.FSharp.Collections.SeqModule.result@1003.Invoke(Int32 i) at Microsoft.FSharp.Collections.Internal.IEnumerator.unfold@205.DoMoveNext(b& curr) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 207 at Microsoft.FSharp.Collections.Internal.IEnumerator.MapEnumerator1.System-Collections-IEnumerator-MoveNext() in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 64 at Microsoft.FSharp.Collections.SeqModule.ToList[T](IEnumerable1 source) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 546 at Restler.Compiler.SwaggerVisitors.generateGrammarElementForSchema(JsonSchema schema, FSharpOption1 exampleValue, Boolean generateFuzzablePayloadsForExamples, Boolean trackParameters, FSharpOption1 jsonPropertyMaxDepth, Boolean isRequired, Boolean isReadOnly, FSharpList1 parents, SchemaCache schemaCache, FSharpFunc2 cont) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\SwaggerVisitors.fs:line 819 at Restler.Compiler.SwaggerVisitors.generateGrammarElementForSchema(JsonSchema schema, FSharpOption1 exampleValue, Boolean generateFuzzablePayloadsForExamples, Boolean trackParameters, FSharpOption1 jsonPropertyMaxDepth, Boolean isRequired, Boolean isReadOnly, FSharpList1 parents, SchemaCache schemaCache, FSharpFunc2 cont) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\SwaggerVisitors.fs:line 636 at Restler.Compiler.Main.allResponses@1163.GenerateNext(IEnumerable1& next) at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase1.MoveNextImpl() in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seqcore.fs:line 371 at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase1.System-Collections-IEnumerator-MoveNext() in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\seqcore.fs:line 403 at Microsoft.FSharp.Collections.SeqModule.TryHead[T](IEnumerable1 source) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 1370 at Restler.Compiler.Main.requestDataSeq$cont@1115(Config config, SchemaCache schemaCache, String ep, KeyValuePair2 m, RequestId requestId, FSharpOption1 exampleConfig, Unit unitVar) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\Compiler.fs:line 1198 at Restler.Compiler.Main.getRequestData@1058-1.GenerateNext(IEnumerable1& next) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\Compiler.fs:line 1115 at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase1.MoveNextImpl() in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seqcore.fs:line 371 at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase1.System-Collections-IEnumerator-MoveNext() in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\seqcore.fs:line 403 at Microsoft.FSharp.Core.CompilerServices.RuntimeHelpers.takeInner@266[T,TResult](ConcatEnumerator2 x, Unit unitVar0) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seqcore.fs:line 268 at System.Collections.Generic.List1..ctor(IEnumerable1 collection) at Microsoft.FSharp.Collections.SeqModule.ToArray[T](IEnumerable1 source) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 825 at Restler.Compiler.Main.generateRequestGrammar(FSharpList1 swaggerDocs, MutationsDictionary dictionary, Config config, FSharpList1 globalExternalAnnotations, FSharpList1 userSpecifiedExamples) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\Compiler.fs:line 1264 at Restler.Workflow.generateGrammarFromSwagger(String grammarOutputDirectoryPath, FSharpOption1 swaggerDoc, FSharpOption1 specMetadata, Config config) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\Workflow.fs:line 179 at Restler.Workflow.generateRestlerGrammar(FSharpOption`1 swaggerDoc, Config config) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.Compiler\Workflow.fs:line 270 at Program.main(String[] argv) in C:\ATR\Trifecta\Fuzzwer\restler-fuzzer-main\src\compiler\Restler.CompilerExe\Program.fs:line 37

[whjv46]

Any ideas on what could cause this message?

[marina-p]

Hello @sm1279 and @whjv46,

For the stack trace above - does your API take a file as input? If yes, this could be the cause of the error.

These types of exceptions should include a message with the unsupported type, but the above does not - this needs to be fixed in RESTler. I will update this issue once the fix is merged so we can track down the specific unsupported type.

Thanks,

Marina

[marina-p]

The fix to add the exception text is merged, could you please re-run your repro and share the exception message with the type?