Class: GraphQL::Stitching::Request
- Inherits:
-
Object
- Object
- GraphQL::Stitching::Request
- Defined in:
- lib/graphql/stitching/request.rb
Constant Summary collapse
- SUPPORTED_OPERATIONS =
["query", "mutation"].freeze
- SKIP_INCLUDE_DIRECTIVE =
/@(?:skip|include)/
Instance Attribute Summary collapse
-
#context ⇒ Hash
readonly
Contextual object passed through resolver flows.
-
#document ⇒ GraphQL::Language::Nodes::Document
readonly
The parsed GraphQL AST document.
-
#operation_name ⇒ String
readonly
Operation name selected for the request.
-
#supergraph ⇒ Supergraph
readonly
Supergraph instance that resolves the request.
-
#variables ⇒ Hash
readonly
Input variables for the request.
Instance Method Summary collapse
-
#digest ⇒ String
A digest of the original document string.
-
#execute(raw: false) ⇒ Hash
Executes the request and returns the rendered response.
- #fragment_definitions ⇒ Hash<String, GraphQL::Language::Nodes::FragmentDefinition>
-
#initialize(supergraph, document, operation_name: nil, variables: nil, context: nil) ⇒ Request
constructor
Creates a new supergraph request.
-
#normalized_digest ⇒ String
A digest of the normalized document string.
-
#normalized_string ⇒ String
A print of the parsed AST document with consistent whitespace.
-
#operation ⇒ GraphQL::Language::Nodes::OperationDefinition
The selected root operation for the request.
-
#operation_directives ⇒ String
A string of directives applied to the root operation.
-
#plan(new_plan = nil) ⇒ Plan
Gets and sets the query plan for the request.
-
#prepare! ⇒ Object
Prepares the request for stitching by rendering variable defaults and applying @skip/@include conditionals.
-
#string ⇒ String
The original document string, or a print of the parsed AST document.
-
#validate ⇒ Object
Validates the request using the combined supergraph schema.
- #variable_definitions ⇒ Hash<String, GraphQL::Language::Nodes::AbstractNode>
Constructor Details
#initialize(supergraph, document, operation_name: nil, variables: nil, context: nil) ⇒ Request
Creates a new supergraph request.
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# File 'lib/graphql/stitching/request.rb', line 30 def initialize(supergraph, document, operation_name: nil, variables: nil, context: nil) @supergraph = supergraph @string = nil @digest = nil @normalized_string = nil @normalized_digest = nil @operation = nil @operation_directives = nil @variable_definitions = nil @fragment_definitions = nil @plan = nil @document = if document.is_a?(String) @string = document GraphQL.parse(document) else document end @operation_name = operation_name @variables = variables || {} @context = context || GraphQL::Stitching::EMPTY_OBJECT end |
Instance Attribute Details
#context ⇒ Hash (readonly)
Returns contextual object passed through resolver flows.
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# File 'lib/graphql/stitching/request.rb', line 22 def context @context end |
#document ⇒ GraphQL::Language::Nodes::Document (readonly)
Returns the parsed GraphQL AST document.
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# File 'lib/graphql/stitching/request.rb', line 13 def document @document end |
#operation_name ⇒ String (readonly)
Returns operation name selected for the request.
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# File 'lib/graphql/stitching/request.rb', line 19 def operation_name @operation_name end |
#supergraph ⇒ Supergraph (readonly)
Returns supergraph instance that resolves the request.
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# File 'lib/graphql/stitching/request.rb', line 10 def supergraph @supergraph end |
#variables ⇒ Hash (readonly)
Returns input variables for the request.
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# File 'lib/graphql/stitching/request.rb', line 16 def variables @variables end |
Instance Method Details
#digest ⇒ String
Returns a digest of the original document string. Generally faster but less consistent.
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# File 'lib/graphql/stitching/request.rb', line 65 def digest @digest ||= Digest::SHA2.hexdigest(string) end |
#execute(raw: false) ⇒ Hash
Executes the request and returns the rendered response.
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# File 'lib/graphql/stitching/request.rb', line 153 def execute(raw: false) GraphQL::Stitching::Executor.new(self).perform(raw: raw) end |
#fragment_definitions ⇒ Hash<String, GraphQL::Language::Nodes::FragmentDefinition>
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# File 'lib/graphql/stitching/request.rb', line 109 def fragment_definitions @fragment_definitions ||= @document.definitions.each_with_object({}) do |d, memo| memo[d.name] = d if d.is_a?(GraphQL::Language::Nodes::FragmentDefinition) end end |
#normalized_digest ⇒ String
Returns a digest of the normalized document string. Slower but more consistent.
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# File 'lib/graphql/stitching/request.rb', line 70 def normalized_digest @normalized_digest ||= Digest::SHA2.hexdigest(normalized_string) end |
#normalized_string ⇒ String
Returns a print of the parsed AST document with consistent whitespace.
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# File 'lib/graphql/stitching/request.rb', line 60 def normalized_string @normalized_string ||= @document.to_query_string end |
#operation ⇒ GraphQL::Language::Nodes::OperationDefinition
Returns The selected root operation for the request.
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# File 'lib/graphql/stitching/request.rb', line 75 def operation @operation ||= begin operation_defs = @document.definitions.select do |d| next unless d.is_a?(GraphQL::Language::Nodes::OperationDefinition) next unless SUPPORTED_OPERATIONS.include?(d.operation_type) @operation_name ? d.name == @operation_name : true end if operation_defs.length < 1 raise GraphQL::ExecutionError, "Invalid root operation for given name and operation type." elsif operation_defs.length > 1 raise GraphQL::ExecutionError, "An operation name is required when sending multiple operations." end operation_defs.first end end |
#operation_directives ⇒ String
Returns A string of directives applied to the root operation. These are passed through in all subgraph requests.
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# File 'lib/graphql/stitching/request.rb', line 94 def operation_directives @operation_directives ||= if operation.directives.any? printer = GraphQL::Language::Printer.new operation.directives.map { printer.print(_1) }.join(" ") end end |
#plan(new_plan = nil) ⇒ Plan
Gets and sets the query plan for the request. Assigned query plans may pull from cache.
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# File 'lib/graphql/stitching/request.rb', line 141 def plan(new_plan = nil) if new_plan raise StitchingError, "Plan must be a `GraphQL::Stitching::Plan`." unless new_plan.is_a?(Plan) @plan = new_plan else @plan ||= GraphQL::Stitching::Planner.new(self).perform end end |
#prepare! ⇒ Object
Prepares the request for stitching by rendering variable defaults and applying @skip/@include conditionals.
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# File 'lib/graphql/stitching/request.rb', line 121 def prepare! operation.variables.each do |v| @variables[v.name] = v.default_value if @variables[v.name].nil? && !v.default_value.nil? end if @string.nil? || @string.match?(SKIP_INCLUDE_DIRECTIVE) SkipInclude.render(@document, @variables) do |modified_ast| @document = modified_ast @string = @normalized_string = nil @digest = @normalized_digest = nil @operation = @operation_directives = @variable_definitions = @plan = nil end end self end |
#string ⇒ String
Returns the original document string, or a print of the parsed AST document.
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# File 'lib/graphql/stitching/request.rb', line 55 def string @string || normalized_string end |
#validate ⇒ Object
Validates the request using the combined supergraph schema.
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# File 'lib/graphql/stitching/request.rb', line 116 def validate @supergraph.schema.validate(@document, context: @context) end |
#variable_definitions ⇒ Hash<String, GraphQL::Language::Nodes::AbstractNode>
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# File 'lib/graphql/stitching/request.rb', line 102 def variable_definitions @variable_definitions ||= operation.variables.each_with_object({}) do |v, memo| memo[v.name] = v.type end end |