graphql

package
v1.59.0 Latest Latest
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 Go to latest Published: Nov 17, 2022 License: MIT Imports: 37 Imported by: 6

Documentation

Index

Constants

View Source 
const (
	// SubscriptionTypeUnknown is for unknown or undefined subscriptions.
	SubscriptionTypeUnknown = iota
	// SubscriptionTypeSSE is for Server-Sent Events (SSE) subscriptions.
	SubscriptionTypeSSE
	// SubscriptionTypeGraphQLWS is for subscriptions using a WebSocket connection with
	// 'graphql-ws' as protocol.
	SubscriptionTypeGraphQLWS
	// SubscriptionTypeGraphQLTransportWS is for subscriptions using a WebSocket connection with
	// 'graphql-transport-ws' as protocol.
	SubscriptionTypeGraphQLTransportWS
)
View Source 
const (
	DefaultFlushIntervalInMilliseconds = 1000
)

Variables

View Source 
var (
	ErrEmptyRequest = errors.New("the provided request is empty")
	ErrNilSchema    = errors.New("the provided schema is nil")
)
View Source 
var DefaultComplexityCalculator = defaultComplexityCalculator{}

Functions

func CreateTypeFieldArgumentsLookupMap 

func CreateTypeFieldArgumentsLookupMap(typeFieldArgs []TypeFieldArguments) map[TypeFieldLookupKey]TypeFieldArguments

func UnmarshalHttpRequest 

func UnmarshalHttpRequest(r *http.Request, request *Request) error

func UnmarshalRequest 

func UnmarshalRequest(reader io.Reader, request *Request) error

Types

type ComplexityCalculator 

type ComplexityCalculator interface {
	Calculate(operation, definition *ast.Document) (ComplexityResult, error)
}

type ComplexityResult 

type ComplexityResult struct {
	NodeCount    int
	Complexity   int
	Depth        int
	PerRootField []FieldComplexityResult
	Errors       Errors
}

type DataSourceGraphqlOptions 

type DataSourceGraphqlOptions struct {
	HttpClient         *http.Client
	WhitelistedSchemes []string
	Hooks              *datasource.Hooks
}

type DataSourceHttpJsonOptions 

type DataSourceHttpJsonOptions struct {
	HttpClient         *http.Client
	WhitelistedSchemes []string
	Hooks              *datasource.Hooks
}

type DataSourceV2GeneratorOption added in v1.59.0 

type DataSourceV2GeneratorOption func(options *dataSourceV2GeneratorOptions)

func WithDataSourceV2GeneratorSubscriptionClientFactory added in v1.59.0 

func WithDataSourceV2GeneratorSubscriptionClientFactory(factory graphqlDataSource.GraphQLSubscriptionClientFactory) DataSourceV2GeneratorOption

func WithDataSourceV2GeneratorSubscriptionConfiguration added in v1.59.0 

func WithDataSourceV2GeneratorSubscriptionConfiguration(streamingClient *http.Client, subscriptionType SubscriptionType) DataSourceV2GeneratorOption

type DefaultFieldsValidator 

type DefaultFieldsValidator struct {
}

func (DefaultFieldsValidator) Validate deprecated 

func (d DefaultFieldsValidator) Validate(request *Request, schema *Schema, restrictions []Type) (RequestFieldsValidationResult, error)

Validate validates a request by checking if `restrictions` contains blocked fields.

Deprecated: This function can only handle blocked fields. Use `ValidateByFieldList` if you want to check for blocked or allowed fields instead.

func (DefaultFieldsValidator) ValidateByFieldList 

func (d DefaultFieldsValidator) ValidateByFieldList(request *Request, schema *Schema, restrictionList FieldRestrictionList) (RequestFieldsValidationResult, error)

ValidateByFieldList will validate a request by using a list of allowed or blocked fields.

type EngineResultWriter 

type EngineResultWriter struct {
	// contains filtered or unexported fields
}

func NewEngineResultWriter 

func NewEngineResultWriter() EngineResultWriter

func NewEngineResultWriterFromBuffer 

func NewEngineResultWriterFromBuffer(buf *bytes.Buffer) EngineResultWriter

func (*EngineResultWriter) AsHTTPResponse 

func (e *EngineResultWriter) AsHTTPResponse(status int, headers http.Header) *http.Response

func (*EngineResultWriter) Bytes 

func (e *EngineResultWriter) Bytes() []byte

func (*EngineResultWriter) Flush 

func (e *EngineResultWriter) Flush()

func (*EngineResultWriter) Len 

func (e *EngineResultWriter) Len() int

func (*EngineResultWriter) Read 

func (e *EngineResultWriter) Read(p []byte) (n int, err error)

func (*EngineResultWriter) Reset 

func (e *EngineResultWriter) Reset()

func (*EngineResultWriter) SetFlushCallback 

func (e *EngineResultWriter) SetFlushCallback(flushCb func(data []byte))

func (*EngineResultWriter) String 

func (e *EngineResultWriter) String() string

func (*EngineResultWriter) Write 

func (e *EngineResultWriter) Write(p []byte) (n int, err error)

type EngineV2Configuration 

type EngineV2Configuration struct {
	// contains filtered or unexported fields
}

func NewEngineV2Configuration 

func NewEngineV2Configuration(schema *Schema) EngineV2Configuration

func (*EngineV2Configuration) AddDataSource 

func (e *EngineV2Configuration) AddDataSource(dataSource plan.DataSourceConfiguration)

func (*EngineV2Configuration) AddFieldConfiguration 

func (e *EngineV2Configuration) AddFieldConfiguration(fieldConfig plan.FieldConfiguration)

func (*EngineV2Configuration) DataSources 

func (e *EngineV2Configuration) DataSources() []plan.DataSourceConfiguration

func (*EngineV2Configuration) EnableDataLoader 

func (e *EngineV2Configuration) EnableDataLoader(enable bool)

func (*EngineV2Configuration) FieldConfigurations 

func (e *EngineV2Configuration) FieldConfigurations() plan.FieldConfigurations

func (*EngineV2Configuration) SetDataSources 

func (e *EngineV2Configuration) SetDataSources(dataSources []plan.DataSourceConfiguration)

func (*EngineV2Configuration) SetFieldConfigurations 

func (e *EngineV2Configuration) SetFieldConfigurations(fieldConfigs plan.FieldConfigurations)

func (*EngineV2Configuration) SetWebsocketBeforeStartHook 

func (e *EngineV2Configuration) SetWebsocketBeforeStartHook(hook WebsocketBeforeStartHook)

SetWebsocketBeforeStartHook - sets before start hook which will be called before processing any operation sent over websockets

type ErrorPath 

type ErrorPath struct {
	// contains filtered or unexported fields
}

func (*ErrorPath) Len 

func (e *ErrorPath) Len() int

func (*ErrorPath) MarshalJSON 

func (e *ErrorPath) MarshalJSON() ([]byte, error)

func (*ErrorPath) String 

func (e *ErrorPath) String() string

type Errors 

type Errors interface {
	error
	WriteResponse(writer io.Writer) (n int, err error)
	Count() int
	ErrorByIndex(i int) error
}

type ExecutionEngine 

type ExecutionEngine struct {
	// contains filtered or unexported fields
}

func NewExecutionEngine 

func NewExecutionEngine(logger abstractlogger.Logger, schema *Schema, plannerConfig datasource.PlannerConfiguration) (*ExecutionEngine, error)

func (*ExecutionEngine) AddDataSource 

func (e *ExecutionEngine) AddDataSource(name string, plannerFactoryFactory datasource.PlannerFactoryFactory) error

func (*ExecutionEngine) AddGraphqlDataSource 

func (e *ExecutionEngine) AddGraphqlDataSource(name string) error

func (*ExecutionEngine) AddGraphqlDataSourceWithOptions 

func (e *ExecutionEngine) AddGraphqlDataSourceWithOptions(name string, options DataSourceGraphqlOptions) error

func (*ExecutionEngine) AddHttpJsonDataSource 

func (e *ExecutionEngine) AddHttpJsonDataSource(name string) error

func (*ExecutionEngine) AddHttpJsonDataSourceWithOptions 

func (e *ExecutionEngine) AddHttpJsonDataSourceWithOptions(name string, options DataSourceHttpJsonOptions) error

func (*ExecutionEngine) Execute 

func (e *ExecutionEngine) Execute(ctx context.Context, operation *Request, options ExecutionOptions) (*ExecutionResult, error)

func (*ExecutionEngine) ExecuteWithWriter 

func (e *ExecutionEngine) ExecuteWithWriter(ctx context.Context, operation *Request, writer io.Writer, options ExecutionOptions) error

func (*ExecutionEngine) NewExecutionHandler 

func (e *ExecutionEngine) NewExecutionHandler() *execution.Handler

type ExecutionEngineV2 

type ExecutionEngineV2 struct {
	// contains filtered or unexported fields
}

func NewExecutionEngineV2 

func NewExecutionEngineV2(ctx context.Context, logger abstractlogger.Logger, engineConfig EngineV2Configuration) (*ExecutionEngineV2, error)

func (*ExecutionEngineV2) Execute 

func (e *ExecutionEngineV2) Execute(ctx context.Context, operation *Request, writer resolve.FlushWriter, options ...ExecutionOptionsV2) error

func (*ExecutionEngineV2) GetWebsocketBeforeStartHook 

func (e *ExecutionEngineV2) GetWebsocketBeforeStartHook() WebsocketBeforeStartHook

type ExecutionOptions 

type ExecutionOptions struct {
	ExtraArguments json.RawMessage
}

type ExecutionOptionsV2 

type ExecutionOptionsV2 func(ctx *internalExecutionContext)

func WithAdditionalHttpHeaders 

func WithAdditionalHttpHeaders(headers http.Header, excludeByKeys ...string) ExecutionOptionsV2

func WithAfterFetchHook 

func WithAfterFetchHook(hook resolve.AfterFetchHook) ExecutionOptionsV2

func WithBeforeFetchHook 

func WithBeforeFetchHook(hook resolve.BeforeFetchHook) ExecutionOptionsV2

type ExecutionResult 

type ExecutionResult struct {
	// contains filtered or unexported fields
}

func SchemaIntrospection 

func SchemaIntrospection(schema *Schema) (*ExecutionResult, error)

func (*ExecutionResult) Buffer 

func (r *ExecutionResult) Buffer() *bytes.Buffer

func (*ExecutionResult) GetAsHTTPResponse 

func (r *ExecutionResult) GetAsHTTPResponse() (res *http.Response)

type Extractor 

type Extractor struct {
	// contains filtered or unexported fields
}

func NewExtractor 

func NewExtractor() *Extractor

func (*Extractor) ExtractFieldsFromRequest 

func (e *Extractor) ExtractFieldsFromRequest(request *Request, schema *Schema, report *operationreport.Report, data RequestTypes)

type FederationEngineConfigFactory 

type FederationEngineConfigFactory struct {
	// contains filtered or unexported fields
}

FederationEngineConfigFactory is used to create a v2 engine config for a supergraph with multiple data sources for subgraphs.

func NewFederationEngineConfigFactory 

func NewFederationEngineConfigFactory(dataSourceConfigs []graphqlDataSource.Configuration, batchFactory resolve.DataSourceBatchFactory, opts ...FederationEngineConfigFactoryOption) *FederationEngineConfigFactory

func (*FederationEngineConfigFactory) EngineV2Configuration 

func (f *FederationEngineConfigFactory) EngineV2Configuration() (conf EngineV2Configuration, err error)

func (*FederationEngineConfigFactory) MergedSchema 

func (f *FederationEngineConfigFactory) MergedSchema() (*Schema, error)

func (*FederationEngineConfigFactory) SetMergedSchemaFromString 

func (f *FederationEngineConfigFactory) SetMergedSchemaFromString(mergedSchema string) (err error)

type FederationEngineConfigFactoryOption 

type FederationEngineConfigFactoryOption func(options *federationEngineConfigFactoryOptions)

func WithFederationHttpClient 

func WithFederationHttpClient(client *http.Client) FederationEngineConfigFactoryOption

func WithFederationStreamingClient added in v1.59.0 

func WithFederationStreamingClient(client *http.Client) FederationEngineConfigFactoryOption

func WithFederationSubscriptionClientFactory added in v1.59.0 

func WithFederationSubscriptionClientFactory(factory graphqlDataSource.GraphQLSubscriptionClientFactory) FederationEngineConfigFactoryOption

func WithFederationSubscriptionType added in v1.59.0 

func WithFederationSubscriptionType(subscriptionType SubscriptionType) FederationEngineConfigFactoryOption

type FieldComplexityResult 

type FieldComplexityResult struct {
	TypeName   string
	FieldName  string
	Alias      string
	NodeCount  int
	Complexity int
	Depth      int
}

type FieldRestrictionList 

type FieldRestrictionList struct {
	Kind  FieldRestrictionListKind
	Types []Type
}

type FieldRestrictionListKind 

type FieldRestrictionListKind int
const (
	AllowList FieldRestrictionListKind = iota
	BlockList
)

type FieldRestrictionValidator 

type FieldRestrictionValidator interface {
	ValidateByFieldList(request *Request, schema *Schema, restrictionList FieldRestrictionList) (RequestFieldsValidationResult, error)
}

type NormalizationResult 

type NormalizationResult struct {
	Successful bool
	Errors     Errors
}

type OperationType 

type OperationType ast.OperationType
const (
	OperationTypeUnknown      OperationType = OperationType(ast.OperationTypeUnknown)
	OperationTypeQuery        OperationType = OperationType(ast.OperationTypeQuery)
	OperationTypeMutation     OperationType = OperationType(ast.OperationTypeMutation)
	OperationTypeSubscription OperationType = OperationType(ast.OperationTypeSubscription)
)

type ProxyEngineConfigFactory 

type ProxyEngineConfigFactory struct {
	// contains filtered or unexported fields
}

ProxyEngineConfigFactory is used to create a v2 engine config with a single upstream and a single data source for this upstream.

func NewProxyEngineConfigFactory 

func NewProxyEngineConfigFactory(schema *Schema, proxyUpstreamConfig ProxyUpstreamConfig, batchFactory resolve.DataSourceBatchFactory, opts ...ProxyEngineConfigFactoryOption) *ProxyEngineConfigFactory

func (*ProxyEngineConfigFactory) EngineV2Configuration 

func (p *ProxyEngineConfigFactory) EngineV2Configuration() (EngineV2Configuration, error)

type ProxyEngineConfigFactoryOption 

type ProxyEngineConfigFactoryOption func(options *proxyEngineConfigFactoryOptions)

func WithProxyHttpClient 

func WithProxyHttpClient(client *http.Client) ProxyEngineConfigFactoryOption

func WithProxyStreamingClient added in v1.59.0 

func WithProxyStreamingClient(client *http.Client) ProxyEngineConfigFactoryOption

func WithProxySubscriptionClientFactory added in v1.59.0 

func WithProxySubscriptionClientFactory(factory graphqlDataSource.GraphQLSubscriptionClientFactory) ProxyEngineConfigFactoryOption

type ProxyUpstreamConfig 

type ProxyUpstreamConfig struct {
	URL              string
	Method           string
	StaticHeaders    http.Header
	SubscriptionType SubscriptionType
}

ProxyUpstreamConfig holds configuration to configure a single data source to a single upstream.

type Request 

type Request struct {
	OperationName string          `json:"operationName"`
	Variables     json.RawMessage `json:"variables"`
	Query         string          `json:"query"`
	// contains filtered or unexported fields
}

func (*Request) CalculateComplexity 

func (r *Request) CalculateComplexity(complexityCalculator ComplexityCalculator, schema *Schema) (ComplexityResult, error)

func (*Request) IsIntrospectionQuery 

func (r *Request) IsIntrospectionQuery() (result bool, err error)

func (*Request) IsNormalized 

func (r *Request) IsNormalized() bool

func (*Request) Normalize 

func (r *Request) Normalize(schema *Schema) (result NormalizationResult, err error)

func (*Request) OperationType 

func (r *Request) OperationType() (OperationType, error)

func (Request) Print 

func (r Request) Print(writer io.Writer) (n int, err error)

func (*Request) SetHeader 

func (r *Request) SetHeader(header http.Header)

func (*Request) ValidateFieldRestrictions 

func (r *Request) ValidateFieldRestrictions(schema *Schema, restrictedFieldsList FieldRestrictionList, validator FieldRestrictionValidator) (RequestFieldsValidationResult, error)

ValidateFieldRestrictions will validate a request by using a list of allowed or blocked fields.

func (*Request) ValidateForSchema 

func (r *Request) ValidateForSchema(schema *Schema) (result ValidationResult, err error)

func (*Request) ValidateRestrictedFields deprecated 

func (r *Request) ValidateRestrictedFields(schema *Schema, restrictedFields []Type) (RequestFieldsValidationResult, error)

ValidateRestrictedFields validates a request by checking if `restrictedFields` contains blocked fields.

Deprecated: This function can only handle blocked fields. Use `ValidateFieldRestrictions` if you want to check for blocked or allowed fields instead.

type RequestError 

type RequestError struct {
	Message   string                   `json:"message"`
	Locations []graphqlerrors.Location `json:"locations,omitempty"`
	Path      ErrorPath                `json:"path"`
}

func (RequestError) Error 

func (o RequestError) Error() string

func (RequestError) MarshalJSON 

func (o RequestError) MarshalJSON() ([]byte, error)

type RequestErrors 

type RequestErrors []RequestError

func RequestErrorsFromError 

func RequestErrorsFromError(err error) RequestErrors

func RequestErrorsFromOperationReport 

func RequestErrorsFromOperationReport(report operationreport.Report) (errors RequestErrors)

func (RequestErrors) Count 

func (o RequestErrors) Count() int

func (RequestErrors) Error 

func (o RequestErrors) Error() string

func (RequestErrors) ErrorByIndex 

func (o RequestErrors) ErrorByIndex(i int) error

func (RequestErrors) WriteResponse 

func (o RequestErrors) WriteResponse(writer io.Writer) (n int, err error)

type RequestFields 

type RequestFields map[string]struct{}

type RequestFieldsValidationResult 

type RequestFieldsValidationResult struct {
	Valid  bool
	Errors Errors
}

type RequestFieldsValidator 

type RequestFieldsValidator interface {
	Validate(request *Request, schema *Schema, restrictions []Type) (RequestFieldsValidationResult, error)
}

type RequestTypes 

type RequestTypes map[string]RequestFields

type Response 

type Response struct {
	Errors Errors `json:"errors,omitempty"`
}

func (Response) Marshal 

func (r Response) Marshal() ([]byte, error)

type Schema 

type Schema struct {
	// contains filtered or unexported fields
}

func NewSchemaFromReader 

func NewSchemaFromReader(reader io.Reader) (*Schema, error)

func NewSchemaFromString 

func NewSchemaFromString(schema string) (*Schema, error)

func (*Schema) Document 

func (s *Schema) Document() []byte

func (*Schema) GetAllFieldArguments 

func (s *Schema) GetAllFieldArguments(skipFieldFuncs ...SkipFieldFunc) []TypeFieldArguments

func (*Schema) GetAllNestedFieldChildrenFromTypeField 

func (s *Schema) GetAllNestedFieldChildrenFromTypeField(typeName string, fieldName string, skipFieldFuncs ...SkipFieldFunc) []TypeFields

func (*Schema) HasMutationType 

func (s *Schema) HasMutationType() bool

func (*Schema) HasQueryType 

func (s *Schema) HasQueryType() bool

HasQueryType TODO: should be deprecated?

func (*Schema) HasSubscriptionType 

func (s *Schema) HasSubscriptionType() bool

func (*Schema) Hash 

func (s *Schema) Hash() uint64

Hash returns the hash of the schema.

func (*Schema) Input 

func (s *Schema) Input() []byte

func (*Schema) IntrospectionResponse 

func (s *Schema) IntrospectionResponse(out io.Writer) error

IntrospectionResponse - writes full schema introspection response into writer

func (*Schema) IsNormalized 

func (s *Schema) IsNormalized() bool

func (*Schema) MutationTypeName 

func (s *Schema) MutationTypeName() string

func (*Schema) Normalize 

func (s *Schema) Normalize() (result NormalizationResult, err error)

func (*Schema) QueryTypeName 

func (s *Schema) QueryTypeName() string

func (*Schema) SubscriptionTypeName 

func (s *Schema) SubscriptionTypeName() string

func (*Schema) Validate 

func (s *Schema) Validate() (result ValidationResult, err error)

type SchemaValidationError 

type SchemaValidationError struct {
	Message string `json:"message"`
}

func (SchemaValidationError) Error 

func (s SchemaValidationError) Error() string

type SchemaValidationErrors 

type SchemaValidationErrors []SchemaValidationError

func (SchemaValidationErrors) Count 

func (s SchemaValidationErrors) Count() int

func (SchemaValidationErrors) Error 

func (s SchemaValidationErrors) Error() string

func (SchemaValidationErrors) ErrorByIndex 

func (s SchemaValidationErrors) ErrorByIndex(i int) error

func (SchemaValidationErrors) WriteResponse 

func (s SchemaValidationErrors) WriteResponse(writer io.Writer) (n int, err error)

type SkipFieldFunc 

type SkipFieldFunc func(typeName, fieldName string, definition ast.Document) bool

func NewIsDataSourceConfigV2RootFieldSkipFunc 

func NewIsDataSourceConfigV2RootFieldSkipFunc(dataSources []plan.DataSourceConfiguration) SkipFieldFunc

func NewSkipReservedNamesFunc 

func NewSkipReservedNamesFunc() SkipFieldFunc

type SubscriptionType added in v1.59.0 

type SubscriptionType int

type Type 

type Type struct {
	Name   string   `json:"name"`
	Fields []string `json:"fields"`
}

type TypeFieldArguments 

type TypeFieldArguments struct {
	TypeName      string
	FieldName     string
	ArgumentNames []string
}

type TypeFieldLookupKey 

type TypeFieldLookupKey string

func CreateTypeFieldLookupKey 

func CreateTypeFieldLookupKey(typeName string, fieldName string) TypeFieldLookupKey

type TypeFields 

type TypeFields struct {
	TypeName   string
	FieldNames []string
}

type ValidationResult 

type ValidationResult struct {
	Valid  bool
	Errors Errors
}

func ValidateSchemaString 

func ValidateSchemaString(schema string) (result ValidationResult, err error)

type WebsocketBeforeStartHook 

type WebsocketBeforeStartHook interface {
	OnBeforeStart(reqCtx context.Context, operation *Request) error
}

Source Files

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