Class: GraphQL::Analysis::MaxQueryComplexity

Inherits:
QueryComplexity show all
Defined in:
lib/graphql/analysis/max_query_complexity.rb

Overview

Used under the hood to implement complexity validation, see Schema#max_complexity and Query#max_complexity

Examples:

Assert max complexity of 10

# DON'T actually do this, graphql-ruby
# Does this for you based on your `max_complexity` setting
MySchema.query_analyzers << GraphQL::Analysis::MaxQueryComplexity.new(10)

Instance Method Summary collapse

Methods inherited from QueryComplexity

#call, #final_value, #initial_value

Constructor Details

#initialize(max_complexity) ⇒ MaxQueryComplexity

Returns a new instance of MaxQueryComplexity.



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# File 'lib/graphql/analysis/max_query_complexity.rb', line 13

def initialize(max_complexity)
  disallow_excessive_complexity = -> (query, complexity) {
    if complexity > max_complexity
      GraphQL::AnalysisError.new("Query has complexity of #{complexity}, which exceeds max complexity of #{max_complexity}")
    else
      nil
    end
  }
  super(&disallow_excessive_complexity)
end