private string PrintOperationDefinition(GraphQLOperationDefinition definition)
{
var name = PrintName(definition.Name);
var directives = Join(definition.Directives?.Select(this.PrintDirective), " ");
var selectionSet = this.PrintSelectionSet(definition.SelectionSet);
var variableDefinitions = Wrap(
"(",
this.Join(definition.VariableDefinitions?.Select(this.PrintVariableDefinition), ", "), ")");
var operation = definition.Operation
.ToString()
.ToLower();
var variables = string.IsNullOrWhiteSpace(name) ? variableDefinitions : this.Join(new[] { name, variableDefinitions });
return(this.Join(
new[]
{
operation,
variables,
directives,
selectionSet
},
" "));
}
internal static void Operation(this ILogger logger, GraphQLOperationDefinition operation)
{
OperationAction(
logger,
operation.Operation.ToString().ToLowerInvariant(),
operation.Name?.Value, null);
}
private static async Task <ExecutionResult> ExecuteSubscriptionEventAsync(
IExecutorContext context,
GraphQLOperationDefinition subscription,
Dictionary <string, object> coercedVariableValues,
object evnt,
Func <Exception, Error> formatError)
{
var subscriptionType = context.Schema.Subscription;
var selectionSet = subscription.SelectionSet;
var path = new NodePath();
var data = await SelectionSets.ExecuteSelectionSetAsync(
context,
selectionSet,
subscriptionType,
evnt,
coercedVariableValues,
path).ConfigureAwait(false);
var result = new ExecutionResult
{
Errors = context.FieldErrors.Select(formatError).ToList(),
Data = data
};
return(result);
}
public static IReadOnlyDictionary <string, object> CoerceVariableValues(
ISchema schema,
GraphQLOperationDefinition operation,
Dictionary <string, object> variableValues)
{
var coercedValues = new Dictionary <string, object>();
var variableDefinitions = operation.VariableDefinitions;
if (variableDefinitions == null)
{
return(coercedValues);
}
foreach (var variableDefinition in variableDefinitions)
{
var variableName = variableDefinition.Variable.Name.Value;
var variableType = Ast.TypeFromAst(schema, variableDefinition.Type);
// should be assert?
if (!TypeIs.IsInputType(variableType))
{
throw new VariableException($"Variable is not of input type", variableName, variableType);
}
var defaultValue = variableDefinition.DefaultValue;
var hasValue = variableValues.ContainsKey(variableName);
var value = variableValues[variableName];
if (!hasValue && defaultValue != null)
{
coercedValues[variableName] = defaultValue;
}
if (variableType is NonNull &&
(!hasValue || value == null))
{
throw new ValueCoercionException(
$"Variable {variableName} type is non-nullable but value is null or not set",
value,
variableType);
}
if (hasValue)
{
if (value == null)
{
coercedValues[variableName] = null;
}
else
{
coercedValues[variableName] = Values.CoerceValue(
schema.GetInputFields,
value,
variableType);
}
}
}
return(coercedValues);
}
/// <summary>
/// Builds a <see cref="ExecutionContext"/> instance from the provided values.
/// </summary>
protected virtual ExecutionContext BuildExecutionContext(ExecutionOptions options, GraphQLDocument document, GraphQLOperationDefinition operation, Variables variables, Metrics metrics)
{
var context = new ExecutionContext
{
Document = document,
Schema = options.Schema !,
RootValue = options.Root,
UserContext = options.UserContext,
Operation = operation,
Variables = variables,
Errors = new ExecutionErrors(),
InputExtensions = options.Extensions ?? Inputs.Empty,
OutputExtensions = new Dictionary <string, object?>(),
CancellationToken = options.CancellationToken,
Metrics = metrics,
Listeners = options.Listeners,
ThrowOnUnhandledException = options.ThrowOnUnhandledException,
UnhandledExceptionDelegate = options.UnhandledExceptionDelegate,
MaxParallelExecutionCount = options.MaxParallelExecutionCount,
RequestServices = options.RequestServices,
};
context.ExecutionStrategy = SelectExecutionStrategy(context);
return(context);
}
private bool ShouldBeSkipped(GraphQLOperationDefinition actualOperation, ValidationContext context)
{
if (context.Document.OperationsCount() <= 1)
{
return(false);
}
int i = 0;
do
{
var ancestor = context.TypeInfo.GetAncestor(i++);
if (ancestor == actualOperation)
{
return(false);
}
if (ancestor == context.Document)
{
return(true);
}
if (ancestor is GraphQLFragmentDefinition fragment)
{
//TODO: may be rewritten completely later
var c = new FragmentBelongsToOperationVisitorContext(fragment);
_visitor.VisitAsync(actualOperation, c).GetAwaiter().GetResult(); // TODO: need to think of something to avoid this
return(!c.Found);
}
} while (true);
}
public async Task <ExpandoObject> ComposeResultForSubscriptions(
GraphQLComplexType type, GraphQLOperationDefinition operationDefinition)
{
if (string.IsNullOrWhiteSpace(this.clientId))
{
throw new GraphQLException(
"Can't invoke subscription without clientId specified",
new ASTNode[] { operationDefinition });
}
if (!this.subscriptionId.HasValue)
{
throw new GraphQLException(
"Can't invoke subscription without subscriptionId specified",
new ASTNode[] { operationDefinition });
}
var context = this.CreateExecutionContext(operationDefinition);
var scope = new FieldScope(context, type, null);
return(await this.ProcessSubscription(
(GraphQLSubscriptionType)type,
context.FieldCollector,
scope));
}
private string PrintOperationDefinition(GraphQLOperationDefinition definition)
{
var name = PrintName(definition.Name);
var directives = Join(definition.Directives?.Select(PrintDirective), " ");
var selectionSet = PrintSelectionSet(definition.SelectionSet);
var variableDefinitions = Wrap(
"(",
Join(definition.VariableDefinitions?.Select(PrintVariableDefinition), ", "), ")");
var operation = definition.Operation
.ToString()
.ToLower();
return(string.IsNullOrWhiteSpace(name) &&
string.IsNullOrWhiteSpace(name) &&
string.IsNullOrWhiteSpace(name) &&
definition.Operation == OperationType.Query
? selectionSet
: Join(
new[]
{
operation,
Join(new[] { name, variableDefinitions }),
directives,
selectionSet
},
" "));
}
public Operation(GraphQLOperationDefinition op)
{
this.operation = op;
Name = op.Name?.Value;
Selection = new SetSelection(operation.SelectionSet);
}
public static IEnumerable <VariableUsage> Get(
GraphQLOperationDefinition operation, GraphQLDocument document, IGraphQLSchema schema)
{
var visitor = new VariableUsagesProvider(GetFragmentsFromDocument(document), schema);
visitor.BeginVisitOperationDefinition(operation);
return(visitor.variableUsages);
}
public override GraphQLOperationDefinition BeginVisitOperationDefinition(
GraphQLOperationDefinition definition)
{
{
Tracker.EnterOperationDefinition?.Invoke(definition);
}
return(base.BeginVisitOperationDefinition(definition));
}
public override GraphQLOperationDefinition BeginVisitOperationDefinition(GraphQLOperationDefinition definition)
{
if (definition.Name == null && this.operationCount > 1)
{
this.Errors.Add(new GraphQLException("This anonymous operation must be the only defined operation.", new[] { definition }));
}
return(definition);
}
public override GraphQLOperationDefinition EndVisitOperationDefinition(
GraphQLOperationDefinition definition)
{
{
Tracker.LeaveOperationDefinition?.Invoke(definition);
}
return(base.EndVisitOperationDefinition(definition));
}
private void VerifyUsage(GraphQLOperationDefinition operation, VariableUsage usage, string opName)
{
var variableName = usage.Variable.Name.Value;
if (!this.variableDefinitions.Contains(variableName))
{
this.Errors.Add(new GraphQLException(this.ComposeUndefinedVarMessage(variableName, opName),
new ASTNode[] { usage.Variable, operation }));
}
}
public void Deconstruct(out ISchema schema, out GraphQLDocument document,
out GraphQLOperationDefinition operation, out object initialValue,
out Dictionary <string, object> coercedVariableValues)
{
schema = Schema;
document = Document;
operation = OperationDefinition;
initialValue = InitialValue;
coercedVariableValues = CoercedVariableValues;
}
public virtual GraphQLOperationDefinition BeginVisitOperationDefinition(GraphQLOperationDefinition definition)
{
if (definition.Name != null)
{
this.BeginVisitNode(definition.Name);
}
this.BeginVisitNode(definition.SelectionSet);
return(definition);
}
private static Operation Operation(GraphQLOperationDefinition source)
{
return(new Operation(Name(source.Name), SelectionSet(source.SelectionSet))
{
SourceLocation = Convert(source.Location),
CommentNode = Comment(source.Comment),
OperationType = ToOperationType(source.Operation),
Variables = VariableDefinitions(source.VariableDefinitions),
Directives = Directives(source.Directives)
});
}
public override GraphQLOperationDefinition EndVisitOperationDefinition(GraphQLOperationDefinition definition)
{
var variableUsages = VariableUsagesProvider.Get(definition, this.document, this.Schema);
foreach (var usage in variableUsages)
{
this.VerifyUsage(usage);
}
return(base.EndVisitOperationDefinition(definition));
}
public Operation Operation(GraphQLOperationDefinition source)
{
var name = source.Name != null?Name(source.Name) : null;
var op = new Operation(name).WithLocation(source, _body);
op.OperationType = ToOperationType(source.Operation);
op.SelectionSet = SelectionSet(source.SelectionSet);
op.Variables = VariableDefinitions(source.VariableDefinitions);
op.Directives = Directives(source.Directives);
return(op);
}
private void ResolveOperationDefinition(GraphQLOperationDefinition graphQLOperationDefinition)
{
if (this.operation != null)
{
throw new Exception("Must provide operation name if query contains multiple operations.");
}
if (this.operation == null)
{
this.operation = graphQLOperationDefinition;
}
}
public override GraphQLOperationDefinition BeginVisitOperationDefinition(GraphQLOperationDefinition definition)
{
if (definition.Operation == OperationType.Subscription)
{
if (definition.SelectionSet?.Selections?.Count() != 1)
{
this.Errors.Add(new GraphQLException(
this.SingleFieldOnlyMessage(definition.Name?.Value),
definition.SelectionSet.Selections.Skip(1).ToArray()));
}
}
return(definition);
}
public BenchmarkInfo(string query, string inputs, Func <ISchema> schemaBuilder)
{
// this exercises all the code in case of any errors, in addition to prep for each stage of testing
SchemaBuilder = schemaBuilder;
Schema = BuildSchema();
Query = query;
Document = Parse();
Operation = Document.Definitions.OfType <GraphQLOperationDefinition>().FirstOrDefault();
InputsString = inputs;
Inputs = DeserializeInputs();
Variables = ParseVariables();
ExecutionResult = Execute();
_ = Serialize();
}
public override GraphQLOperationDefinition BeginVisitOperationDefinition(GraphQLOperationDefinition definition)
{
switch (definition.Operation)
{
case OperationType.Query: this.typeStack.Push(this.Schema.QueryType); break;
default: throw new NotImplementedException();
}
definition = base.BeginVisitOperationDefinition(definition);
this.typeStack.Pop();
return(definition);
}
public virtual GraphQLOperationDefinition BeginVisitOperationDefinition(
GraphQLOperationDefinition definition)
{
if (definition.Name != null)
{
BeginVisitNode(definition.Name);
}
if (definition.VariableDefinitions != null)
{
BeginVisitVariableDefinitions(definition.VariableDefinitions);
}
BeginVisitNode(definition.SelectionSet);
return(EndVisitOperationDefinition(definition));
}
public ExecutionResult Execute()
{
var context = new Execution.ExecutionContext
{
Document = Document,
Schema = Schema,
RootValue = null,
UserContext = new Dictionary <string, object>(),
Operation = Operation,
Variables = Variables,
Errors = new ExecutionErrors(),
InputExtensions = Inputs.Empty,
OutputExtensions = new Dictionary <string, object>(),
CancellationToken = default,
private void ResolveOperationDefinition(GraphQLOperationDefinition graphQLOperationDefinition, string operationToExecute)
{
if (this.Operation != null && string.IsNullOrWhiteSpace(operationToExecute))
{
throw new GraphQLException("Must provide operation name if query contains multiple operations.");
}
if (!string.IsNullOrWhiteSpace(operationToExecute) && graphQLOperationDefinition.Name.Value == operationToExecute)
{
this.Operation = graphQLOperationDefinition;
}
else if (string.IsNullOrWhiteSpace(operationToExecute) && this.Operation == null)
{
this.Operation = graphQLOperationDefinition;
}
}
private ExecutionContext CreateExecutionContext(GraphQLOperationDefinition operationDefinition)
{
var variableResolver = this.CreateVariableResolver();
var fieldCollector = new FieldCollector(
this.fragments,
this.graphQLSchema.SchemaRepository);
return(new ExecutionContext()
{
FieldCollector = fieldCollector,
OperationType = operationDefinition.Operation,
Schema = this.graphQLSchema,
SchemaRepository = this.graphQLSchema.SchemaRepository,
VariableResolver = variableResolver
});
}
public override GraphQLOperationDefinition EndVisitOperationDefinition(GraphQLOperationDefinition definition)
{
var variableUsages = VariableUsagesProvider.Get(definition, this.document, this.Schema);
var operationName = definition.Name != null ? definition.Name.Value : null;
foreach (var variableDefinition in this.variableDefinitions)
{
var variableName = variableDefinition.Variable.Name.Value;
if (!variableUsages.Any(e => e.Variable.Name.Value == variableName))
{
this.Errors.Add(new GraphQLException(this.GetUnusedVariablesMessage(variableName, operationName),
new[] { variableDefinition }));
}
}
return(base.EndVisitOperationDefinition(definition));
}
public ExecutorContext(ISchema schema,
GraphQLDocument document,
ExtensionsRunner extensionsRunner,
IExecutionStrategy strategy,
GraphQLOperationDefinition operation,
IDictionary <string, GraphQLFragmentDefinition> fragments,
IReadOnlyDictionary <string, object> coercedVariableValues)
{
Schema = schema ?? throw new ArgumentNullException(nameof(schema));
Document = document ?? throw new ArgumentNullException(nameof(document));
ExtensionsRunner = extensionsRunner ?? throw new ArgumentNullException(nameof(extensionsRunner));
Strategy = strategy ?? throw new ArgumentNullException(nameof(strategy));
Operation = operation;
Fragments = fragments;
CoercedVariableValues = coercedVariableValues;
_errors = new List <Exception>();
}
public QueryContext(
Func <Exception, Error> formatError,
GraphQLDocument document,
GraphQLOperationDefinition operation,
ISchema schema,
Dictionary <string, object> coercedVariableValues,
object initialValue,
Extensions extensions)
{
FormatError = formatError ?? throw new ArgumentNullException(nameof(formatError));
Document = document ?? throw new ArgumentNullException(nameof(document));
OperationDefinition = operation ?? throw new ArgumentNullException(nameof(operation));
Schema = schema ?? throw new ArgumentNullException(nameof(schema));
CoercedVariableValues =
coercedVariableValues ?? throw new ArgumentNullException(nameof(coercedVariableValues));
InitialValue = initialValue;
Extensions = extensions;
}