plan

package
v2.0.0-rc.55 Latest Latest
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 Go to latest Published: Jul 1, 2024 License: MIT Imports: 24 Imported by: 6

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Index

Constants

View Source 
const (
	ReasonStage1Unique                = "stage1: unique"
	ReasonStage1SameSourceParent      = "stage1: same source parent of unique node"
	ReasonStage1SameSourceLeafChild   = "stage1: same source leaf child of unique node"
	ReasonStage1SameSourceLeafSibling = "stage1: same source leaf sibling of unique node"

	ReasonStage2SameSourceNodeOfSelectedParent  = "stage2: node on the same source as selected parent"
	ReasonStage2SameSourceNodeOfSelectedChild   = "stage2: node on the same source as selected child"
	ReasonStage2SameSourceNodeOfSelectedSibling = "stage2: node on the same source as selected sibling"

	ReasonStage3SelectAvailableNode                            = "stage3: select first available node"
	ReasonStage3SelectNodeHavingPossibleChildsOnSameDataSource = "stage3: select non leaf node which have possible child selections on the same source"

	ReasonKeyRequirementProvidedByPlanner = "provided by planner as required by @key"
)

Variables

View Source 
var (
	FieldDoesntHaveSelectionSetErr          = errors.New("unexpected error: field does not have a selection set")
	InlineFragmentDoesntHaveSelectionSetErr = errors.New("unexpected error: inline fragment does not have a selection set")
	InlineFragmentTypeIsNotExistsErr        = errors.New("unexpected error: inline fragment type condition does not exists")
)

Functions

func AnalyzePlanKind 

func AnalyzePlanKind(operation, definition *ast.Document, operationName string) (operationType ast.OperationType, streaming bool, error error)

func RequiredFieldsFragment 

func RequiredFieldsFragment(typeName, requiredFields string, includeTypename bool) (*ast.Document, *operationreport.Report)

func TreeNodeID 

func TreeNodeID(fieldRef int) uint

Types

type ArgumentConfiguration 

type ArgumentConfiguration struct {
	Name         string
	SourceType   SourceType
	SourcePath   []string
	RenderConfig ArgumentRenderConfig
	RenameTypeTo string
}

type ArgumentRenderConfig 

type ArgumentRenderConfig string

ArgumentRenderConfig is used to determine how an argument should be rendered 

const (
	RenderArgumentDefault        ArgumentRenderConfig = ""
	RenderArgumentAsArrayCSV     ArgumentRenderConfig = "render_argument_as_array_csv"
	RenderArgumentAsGraphQLValue ArgumentRenderConfig = "render_argument_as_graphql_value"
	RenderArgumentAsJSONValue    ArgumentRenderConfig = "render_argument_as_json_value"
)

type ArgumentUsageInfo 

type ArgumentUsageInfo struct {
	FieldName         string
	EnclosingTypeName string
	ArgumentName      string
	ArgumentTypeName  string
}

type ArgumentsConfigurations 

type ArgumentsConfigurations []ArgumentConfiguration

func (ArgumentsConfigurations) ForName 

func (a ArgumentsConfigurations) ForName(argName string) *ArgumentConfiguration

type Configuration 

type Configuration struct {
	Logger                     abstractlogger.Logger
	DefaultFlushIntervalMillis int64
	DataSources                []DataSource
	Fields                     FieldConfigurations
	Types                      TypeConfigurations
	// DisableResolveFieldPositions should be set to true for testing purposes
	// This setting removes position information from all fields
	// In production, this should be set to false so that error messages are easier to understand
	DisableResolveFieldPositions bool
	CustomResolveMap             map[string]resolve.CustomResolve

	// Debug - configure debug options
	Debug DebugConfiguration
	// IncludeInfo will add additional information to the plan,
	// e.g. the origin of a field, possible types, etc.
	// This information is required to compute the schema usage info from a plan
	IncludeInfo bool

	MinifySubgraphOperations bool
}

type DSHash 

type DSHash uint64

type DataSource 

type DataSource interface {
	FederationInfo
	NodesInfo
	DirectivesConfigurations
	Id() string
	Hash() DSHash
	FederationConfiguration() FederationMetaData
	CreatePlannerConfiguration(logger abstractlogger.Logger, fetchConfig *objectFetchConfiguration, pathConfig *plannerPathsConfiguration) PlannerConfiguration
}

type DataSourceBehavior 

type DataSourceBehavior interface {
	DataSourcePlanningBehavior() DataSourcePlanningBehavior
	// DownstreamResponseFieldAlias allows the DataSourcePlanner to overwrite the response path with an alias
	// It's required to set OverrideFieldPathFromAlias to true
	// This function is useful in the following scenario
	// 1. The downstream Query doesn't contain an alias
	// 2. The path configuration rewrites the field to an existing field
	// 3. The DataSourcePlanner is using an alias to the upstream
	// Example:
	//
	// type Query {
	//		country: Country
	//		countryAlias: Country
	// }
	//
	// Both, country and countryAlias have a path in the FieldConfiguration of "country"
	// In theory, they would be treated as the same field
	// However, by using DownstreamResponseFieldAlias, it's possible for the DataSourcePlanner to use an alias for countryAlias.
	// In this case, the response would contain both, country and countryAlias fields in the response.
	// At the same time, the downstream Query would only expect the response on the path "country",
	// as both country and countryAlias have a mapping to the path "country".
	// The DataSourcePlanner could keep track that it rewrites the upstream query and use DownstreamResponseFieldAlias
	// to indicate to the Planner to expect the response for countryAlias on the path "countryAlias" instead of "country".
	DownstreamResponseFieldAlias(downstreamFieldRef int) (alias string, exists bool)
}

type DataSourceConfiguration 

type DataSourceConfiguration[T any] interface {
	DataSource
	CustomConfiguration() T
}

func NewDataSourceConfiguration 

func NewDataSourceConfiguration[T any](id string, factory PlannerFactory[T], metadata *DataSourceMetadata, customConfig T) (DataSourceConfiguration[T], error)

type DataSourceDebugger 

type DataSourceDebugger interface {
	astvisitor.VisitorIdentifier
	DebugPrint(args ...interface{})
	EnableDebug()
	EnableQueryPlanLogging()
}

type DataSourceFetchPlanner 

type DataSourceFetchPlanner interface {
	ConfigureFetch() resolve.FetchConfiguration
	ConfigureSubscription() SubscriptionConfiguration
}

type DataSourceFilter 

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

func NewDataSourceFilter 

func NewDataSourceFilter(operation, definition *ast.Document, report *operationreport.Report) *DataSourceFilter

func (*DataSourceFilter) EnableSelectionReasons 

func (f *DataSourceFilter) EnableSelectionReasons()

func (*DataSourceFilter) FilterDataSources 

func (f *DataSourceFilter) FilterDataSources(dataSources []DataSource, existingNodes *NodeSuggestions, hints ...NodeSuggestionHint) (used []DataSource, suggestions *NodeSuggestions)

type DataSourceMetadata 

type DataSourceMetadata struct {
	// FederationMetaData - describes the behavior of the DataSource in the context of the Federation
	FederationMetaData

	// RootNodes - defines the nodes where the responsibility of the DataSource begins
	// RootNode is a node from which you could start a query or a subquery
	// Note: for federation root nodes are root query type fields, entity type fields, and entity object fields
	RootNodes TypeFields
	// ChildNodes - describes additional fields which will be requested along with fields which has a datasources
	// They are always required for the Graphql datasources cause each field could have its own datasource
	// For any flat datasource like HTTP/REST or GRPC we could not request fewer fields, as we always get a full response
	// Note: for federation child nodes are non-entity type fields and interface type fields
	// Note: Unions are not present in the child or root nodes
	ChildNodes TypeFields
	Directives *DirectiveConfigurations
}

func (*DataSourceMetadata) DirectiveConfigurations 

func (d *DataSourceMetadata) DirectiveConfigurations() *DirectiveConfigurations

func (*DataSourceMetadata) HasChildNode 

func (d *DataSourceMetadata) HasChildNode(typeName, fieldName string) bool

func (*DataSourceMetadata) HasChildNodeWithTypename 

func (d *DataSourceMetadata) HasChildNodeWithTypename(typeName string) bool

func (*DataSourceMetadata) HasRootNode 

func (d *DataSourceMetadata) HasRootNode(typeName, fieldName string) bool

func (*DataSourceMetadata) HasRootNodeWithTypename 

func (d *DataSourceMetadata) HasRootNodeWithTypename(typeName string) bool

func (*DataSourceMetadata) ListChildNodes 

func (d *DataSourceMetadata) ListChildNodes() TypeFields

func (*DataSourceMetadata) ListRootNodes 

func (d *DataSourceMetadata) ListRootNodes() TypeFields

type DataSourcePlanner 

type DataSourcePlanner[T any] interface {
	DataSourceFetchPlanner
	DataSourceBehavior
	Register(visitor *Visitor, configuration DataSourceConfiguration[T], dataSourcePlannerConfiguration DataSourcePlannerConfiguration) error
	UpstreamSchema(dataSourceConfig DataSourceConfiguration[T]) (doc *ast.Document, ok bool)
}

type DataSourcePlannerConfiguration 

type DataSourcePlannerConfiguration struct {
	RequiredFields FederationFieldConfigurations
	ProvidedFields *NodeSuggestions
	ParentPath     string
	PathType       PlannerPathType
	IsNested       bool
}

func (*DataSourcePlannerConfiguration) HasRequiredFields 

func (c *DataSourcePlannerConfiguration) HasRequiredFields() bool

type DataSourcePlanningBehavior 

type DataSourcePlanningBehavior struct {
	// MergeAliasedRootNodes will reuse a data source for multiple root fields with aliases if true.
	// Example:
	//  {
	//    rootField
	//    alias: rootField
	//  }
	// On dynamic data sources (e.g. GraphQL, SQL, ...) this should return true and for
	// static data sources (e.g. REST, static, GRPC...) it should be false.
	MergeAliasedRootNodes bool
	// OverrideFieldPathFromAlias will let the planner know if the response path should also be aliased (= true)
	// or not (= false)
	// Example:
	//  {
	//    rootField
	//    alias: original
	//  }
	// When true expected response will be { "rootField": ..., "alias": ... }
	// When false expected response will be { "rootField": ..., "original": ... }
	OverrideFieldPathFromAlias bool
	// IncludeTypeNameFields should be set to true if the planner wants to get EnterField & LeaveField events
	// for __typename fields
	IncludeTypeNameFields bool
}

type DebugConfiguration 

type DebugConfiguration struct {
	PrintOperationTransformations         bool
	PrintOperationEnableASTRefs           bool
	PrintPlanningPaths                    bool
	PrintQueryPlans                       bool
	PrintNodeSuggestions                  bool
	EnableNodeSuggestionsSelectionReasons bool

	ConfigurationVisitor bool
	PlanningVisitor      bool
	DatasourceVisitor    bool
}

type DirectiveConfiguration 

type DirectiveConfiguration struct {
	DirectiveName string
	RenameTo      string
}

type DirectiveConfigurations 

type DirectiveConfigurations []DirectiveConfiguration

func NewDirectiveConfigurations 

func NewDirectiveConfigurations(configs []DirectiveConfiguration) *DirectiveConfigurations

func (*DirectiveConfigurations) RenameTypeNameOnMatchBytes 

func (d *DirectiveConfigurations) RenameTypeNameOnMatchBytes(directiveName []byte) []byte

func (*DirectiveConfigurations) RenameTypeNameOnMatchStr 

func (d *DirectiveConfigurations) RenameTypeNameOnMatchStr(directiveName string) string

type DirectivesConfigurations 

type DirectivesConfigurations interface {
	DirectiveConfigurations() *DirectiveConfigurations
}

type EntityInterfaceConfiguration 

type EntityInterfaceConfiguration struct {
	InterfaceTypeName string
	ConcreteTypeNames []string
}

type FederationFieldConfiguration 

type FederationFieldConfiguration struct {
	TypeName              string
	FieldName             string
	SelectionSet          string
	DisableEntityResolver bool // applicable only for the keys. If true it means that the given entity could not be resolved by this key.
}

type FederationFieldConfigurations 

type FederationFieldConfigurations []FederationFieldConfiguration

func (*FederationFieldConfigurations) AppendIfNotPresent 

func (f *FederationFieldConfigurations) AppendIfNotPresent(config FederationFieldConfiguration) (added bool)

func (*FederationFieldConfigurations) FilterByTypeAndResolvability 

func (f *FederationFieldConfigurations) FilterByTypeAndResolvability(typeName string, skipUnresovable bool) (out []FederationFieldConfiguration)

func (*FederationFieldConfigurations) FirstByTypeAndField 

func (f *FederationFieldConfigurations) FirstByTypeAndField(typeName, fieldName string) (cfg FederationFieldConfiguration, exists bool)

func (*FederationFieldConfigurations) HasSelectionSet 

func (f *FederationFieldConfigurations) HasSelectionSet(typeName, fieldName, selectionSet string) bool

func (*FederationFieldConfigurations) UniqueTypes 

func (f *FederationFieldConfigurations) UniqueTypes() (out []string)

type FederationInfo 

type FederationInfo interface {
	HasKeyRequirement(typeName, requiresFields string) bool
	RequiredFieldsByKey(typeName string) []FederationFieldConfiguration
	RequiredFieldsByRequires(typeName, fieldName string) (cfg FederationFieldConfiguration, exists bool)
	HasEntity(typeName string) bool
}

type FederationMetaData 

type FederationMetaData struct {
	Keys             FederationFieldConfigurations
	Requires         FederationFieldConfigurations
	Provides         FederationFieldConfigurations
	EntityInterfaces []EntityInterfaceConfiguration
	InterfaceObjects []EntityInterfaceConfiguration
}

func (*FederationMetaData) HasEntity 

func (d *FederationMetaData) HasEntity(typeName string) bool

func (*FederationMetaData) HasKeyRequirement 

func (d *FederationMetaData) HasKeyRequirement(typeName, requiresFields string) bool

func (*FederationMetaData) RequiredFieldsByKey 

func (d *FederationMetaData) RequiredFieldsByKey(typeName string) []FederationFieldConfiguration

func (*FederationMetaData) RequiredFieldsByRequires 

func (d *FederationMetaData) RequiredFieldsByRequires(typeName, fieldName string) (cfg FederationFieldConfiguration, exists bool)

type FieldConfiguration 

type FieldConfiguration struct {
	TypeName  string
	FieldName string
	// DisableDefaultMapping - instructs planner whether to use path mapping coming from Path field
	DisableDefaultMapping bool
	// Path - represents a json path to lookup for a field value in response json
	Path      []string
	Arguments ArgumentsConfigurations
	// UnescapeResponseJson set to true will allow fields (String,List,Object)
	// to be resolved from an escaped JSON string
	// e.g. {"response":"{\"foo\":\"bar\"}"} will be returned as {"foo":"bar"} when path is "response"
	// This way, it is possible to resolve a JSON string as part of the response without extra String encoding of the JSON
	UnescapeResponseJson bool
	// HasAuthorizationRule needs to be set to true if the Authorizer should be called for this field
	HasAuthorizationRule bool

	SubscriptionFilterCondition *SubscriptionFilterCondition
}

type FieldConfigurations 

type FieldConfigurations []FieldConfiguration

func (FieldConfigurations) ForTypeField 

func (f FieldConfigurations) ForTypeField(typeName, fieldName string) *FieldConfiguration

type InputTypeFieldUsageInfo 

type InputTypeFieldUsageInfo struct {
	// IsRootVariable is true if the field is a root variable, e.g. $id
	IsRootVariable bool
	// Count is the number of times this field usage was captured, it's usually 1 but can be higher if the field is used multiple times
	Count int
	// FieldName is the name of the field, e.g. "id" for this selection set: { id }
	FieldName string
	// FieldTypeName is the name of the field type, e.g. "ID" for this selection set: { id }
	FieldTypeName string
	// EnclosingTypeNames is a list of all possible enclosing types, e.g. ["User"] for the "id" field: { user { id } }
	EnclosingTypeNames []string
	// IsEnumField is true if the field is an enum
	IsEnumField bool
	// EnumValues is a list of all enum values that were used for this field
	EnumValues []string
}

func (*InputTypeFieldUsageInfo) Equals 

func (t *InputTypeFieldUsageInfo) Equals(other InputTypeFieldUsageInfo) bool

type Kind 

type Kind int
const (
	SynchronousResponseKind Kind = iota + 1
	SubscriptionResponseKind
)

type NodeSuggestion 

type NodeSuggestion struct {
	TypeName       string
	FieldName      string
	DataSourceHash DSHash
	Path           string
	ParentPath     string
	IsRootNode     bool
	LessPreferable bool // is true in case the node is an entity root node and has a key with disabled resolver

	Selected         bool
	SelectionReasons []string
	// contains filtered or unexported fields
}

func (*NodeSuggestion) String 

func (n *NodeSuggestion) String() string

type NodeSuggestionHint 

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

type NodeSuggestions 

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

func NewNodeSuggestions 

func NewNodeSuggestions() *NodeSuggestions

func NewNodeSuggestionsWithSize 

func NewNodeSuggestionsWithSize(size int) *NodeSuggestions

func (*NodeSuggestions) AddItems 

func (f *NodeSuggestions) AddItems(items ...*NodeSuggestion)

func (*NodeSuggestions) AddSeenField 

func (f *NodeSuggestions) AddSeenField(fieldRef int)

func (*NodeSuggestions) HasSuggestionForPath 

func (f *NodeSuggestions) HasSuggestionForPath(typeName, fieldName, path string) (dsHash DSHash, ok bool)

func (*NodeSuggestions) IsFieldSeen 

func (f *NodeSuggestions) IsFieldSeen(fieldRef int) bool

func (*NodeSuggestions) SuggestionsForPath 

func (f *NodeSuggestions) SuggestionsForPath(typeName, fieldName, path string) (suggestions []*NodeSuggestion)

type NodesAccess 

type NodesAccess interface {
	ListRootNodes() TypeFields
	ListChildNodes() TypeFields
}

type NodesInfo 

type NodesInfo interface {
	HasRootNode(typeName, fieldName string) bool
	HasRootNodeWithTypename(typeName string) bool
	HasChildNode(typeName, fieldName string) bool
	HasChildNodeWithTypename(typeName string) bool
}

type PathType 

type PathType int
const (
	PathTypeField PathType = iota
	PathTypeFragment
	PathTypeParent
)

type Plan 

type Plan interface {
	PlanKind() Kind
	SetFlushInterval(interval int64)
}

type Planner 

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

func NewPlanner 

func NewPlanner(config Configuration) (*Planner, error)

NewPlanner creates a new Planner from the Configuration NOTE: All stateful DataSources should be initiated with the same context.Context object provided to the PlannerFactory. The context.Context object is used to determine the lifecycle of stateful DataSources It's important to note that stateful DataSources must be closed when they are no longer being used Stateful DataSources could be those that initiate a WebSocket connection to an origin, a database client, a streaming client, etc... To ensure that there are no memory leaks, it's therefore important to add a cancel func or timeout to the context.Context At the time when the resolver and all operations should be garbage collected, ensure to first cancel or timeout the ctx object If you don't cancel the context.Context, the goroutines will run indefinitely and there's no reference left to stop them

func (*Planner) Plan 

func (p *Planner) Plan(operation, definition *ast.Document, operationName string, report *operationreport.Report) (plan Plan)

func (*Planner) SetConfig 

func (p *Planner) SetConfig(config Configuration)

func (*Planner) SetDebugConfig 

func (p *Planner) SetDebugConfig(config DebugConfiguration)

type PlannerConfiguration 

type PlannerConfiguration interface {
	DataSourceBehavior
	PlannerPathConfiguration

	ObjectFetchConfiguration() *objectFetchConfiguration
	DataSourceConfiguration() DataSource

	RequiredFields() *FederationFieldConfigurations
	ProvidedFields() *NodeSuggestions

	Debugger() (d DataSourceDebugger, ok bool)
	Planner() any
	Register(visitor *Visitor) error
	UpstreamSchema() (doc *ast.Document, ok bool)
}

type PlannerFactory 

type PlannerFactory[DataSourceSpecificConfiguration any] interface {
	// Planner creates a new DataSourcePlanner
	Planner(logger abstractlogger.Logger) DataSourcePlanner[DataSourceSpecificConfiguration]
	// Context returns the execution context of the factory
	// For stateful datasources, the factory should contain cancellable gloabal execution context
	// This method serves as a flag that factory should have a context
	Context() context.Context
}

PlannerFactory is the factory for the creation of the concrete DataSourcePlanner For stateful datasources, the factory should contain execution context Once the context gets cancelled, all stateful DataSources must close their connections and cleanup themselves.

type PlannerPathConfiguration 

type PlannerPathConfiguration interface {
	ForEachPath(each func(*pathConfiguration) (shouldBreak bool))
	RemoveLeafFragmentPaths() (hasRemovals bool)
	ParentPath() string
	AddPath(configuration pathConfiguration)
	IsNestedPlanner() bool
	HasPath(path string) bool
	HasPathWithFieldRef(fieldRef int) bool
	HasFragmentPath(fragmentRef int) bool
	ShouldWalkFieldsOnPath(path string, typeName string) bool
	HasParent(parent string) bool
}

type PlannerPathType 

type PlannerPathType int
const (
	PlannerPathObject PlannerPathType = iota
	PlannerPathArrayItem
	PlannerPathNestedInArray
)

type SchemaUsageInfo 

type SchemaUsageInfo struct {
	// OperationType is the type of the operation that was executed, e.g. query, mutation, subscription
	OperationType ast.OperationType
	// TypeFields is a list of all fields that were used to define the response shape
	TypeFields []TypeFieldUsageInfo
	// Arguments is a list of all arguments that were used on response fields
	Arguments []ArgumentUsageInfo
	// InputTypeFields is a list of all fields that were used to define the input shape
	InputTypeFields []InputTypeFieldUsageInfo
}

func GetSchemaUsageInfo 

func GetSchemaUsageInfo(plan Plan, operation, definition *ast.Document, variables []byte) (*SchemaUsageInfo, error)

type SourceType 

type SourceType string

SourceType is used to determine the source of an argument 

const (
	ObjectFieldSource   SourceType = "object_field"
	FieldArgumentSource SourceType = "field_argument"
)

type SubgraphRequestMinifier 

type SubgraphRequestMinifier interface {
	EnableSubgraphRequestMinifier()
}

type SubscriptionConfiguration 

type SubscriptionConfiguration struct {
	Input          string
	Variables      resolve.Variables
	DataSource     resolve.SubscriptionDataSource
	PostProcessing resolve.PostProcessingConfiguration
}

type SubscriptionFieldCondition 

type SubscriptionFieldCondition struct {
	FieldPath []string
	Values    []string
}

type SubscriptionFilterCondition 

type SubscriptionFilterCondition struct {
	And []SubscriptionFilterCondition
	Or  []SubscriptionFilterCondition
	Not *SubscriptionFilterCondition
	In  *SubscriptionFieldCondition
}

type SubscriptionResponsePlan 

type SubscriptionResponsePlan struct {
	Response      *resolve.GraphQLSubscription
	FlushInterval int64
}

func (*SubscriptionResponsePlan) PlanKind 

func (_ *SubscriptionResponsePlan) PlanKind() Kind

func (*SubscriptionResponsePlan) SetFlushInterval 

func (s *SubscriptionResponsePlan) SetFlushInterval(interval int64)

type SynchronousResponsePlan 

type SynchronousResponsePlan struct {
	Response      *resolve.GraphQLResponse
	FlushInterval int64
}

func (*SynchronousResponsePlan) PlanKind 

func (_ *SynchronousResponsePlan) PlanKind() Kind

func (*SynchronousResponsePlan) SetFlushInterval 

func (s *SynchronousResponsePlan) SetFlushInterval(interval int64)

type TypeConfiguration 

type TypeConfiguration struct {
	TypeName string
	// RenameTo modifies the TypeName
	// so that a downstream Operation can contain a different TypeName than the upstream Schema
	// e.g. if the downstream Operation contains { ... on Human_api { height } }
	// the upstream Operation can be rewritten to { ... on Human { height }}
	// by setting RenameTo to Human
	// This way, Types can be suffixed / renamed in downstream Schemas while keeping the contract with the upstream ok
	RenameTo string
}

type TypeConfigurations 

type TypeConfigurations []TypeConfiguration

func (*TypeConfigurations) RenameTypeNameOnMatchBytes 

func (t *TypeConfigurations) RenameTypeNameOnMatchBytes(typeName []byte) []byte

func (*TypeConfigurations) RenameTypeNameOnMatchStr 

func (t *TypeConfigurations) RenameTypeNameOnMatchStr(typeName string) string

type TypeField 

type TypeField struct {
	TypeName   string
	FieldNames []string
}

type TypeFieldSource 

type TypeFieldSource struct {
	// IDs is a list of data source IDs that can be used to resolve the field
	IDs []string
}

type TypeFieldUsageInfo 

type TypeFieldUsageInfo struct {
	// FieldName is the name of the field, e.g. "id" for this selection set: { id }
	FieldName string
	// FieldTypeName is the name of the field type, e.g. "ID" for this selection set: { id }
	FieldTypeName string
	// EnclosingTypeNames is a list of all possible enclosing types, e.g. ["User"] for the "id" field: { user { id } }
	EnclosingTypeNames []string
	// Path is a list of field names that lead to the field, e.g. ["user", "id"] for this selection set: { user { id } }
	Path []string
	// Source is a list of data source IDs that can be used to resolve the field
	Source TypeFieldSource
}

func (*TypeFieldUsageInfo) Equals 

func (t *TypeFieldUsageInfo) Equals(other TypeFieldUsageInfo) bool

type TypeFields 

type TypeFields []TypeField

func (TypeFields) HasNode 

func (f TypeFields) HasNode(typeName, fieldName string) bool

func (TypeFields) HasNodeWithTypename 

func (f TypeFields) HasNodeWithTypename(typeName string) bool

type Visitor 

type Visitor struct {
	Operation, Definition *ast.Document
	Walker                *astvisitor.Walker
	Importer              astimport.Importer
	Config                Configuration

	OperationName string
	// contains filtered or unexported fields
}

func (*Visitor) AllowVisitor 

func (v *Visitor) AllowVisitor(kind astvisitor.VisitorKind, ref int, visitor any, skipFor astvisitor.SkipVisitors) bool

func (*Visitor) EnterDirective 

func (v *Visitor) EnterDirective(ref int)

func (*Visitor) EnterDocument 

func (v *Visitor) EnterDocument(operation, definition *ast.Document)

func (*Visitor) EnterField 

func (v *Visitor) EnterField(ref int)

func (*Visitor) EnterInlineFragment 

func (v *Visitor) EnterInlineFragment(ref int)

func (*Visitor) EnterOperationDefinition 

func (v *Visitor) EnterOperationDefinition(ref int)

func (*Visitor) EnterSelectionSet 

func (v *Visitor) EnterSelectionSet(ref int)

func (*Visitor) LeaveDocument 

func (v *Visitor) LeaveDocument(_, _ *ast.Document)

func (*Visitor) LeaveField 

func (v *Visitor) LeaveField(ref int)

func (*Visitor) LeaveInlineFragment 

func (v *Visitor) LeaveInlineFragment(ref int)

func (*Visitor) LeaveSelectionSet 

func (v *Visitor) LeaveSelectionSet(ref int)

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