Class: GraphQL::Tracing::PlatformTracing Private

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql/tracing/platform_tracing.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Each platform provides: - .platform_keys - #platform_trace - #platform_field_key(type, field)

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ PlatformTracing

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of PlatformTracing



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# File 'lib/graphql/tracing/platform_tracing.rb', line 15

def initialize(options = {})
  @options = options
  @platform_keys = self.class.platform_keys
  @trace_scalars = options.fetch(:trace_scalars, false)
end

Class Attribute Details

.platform_keys ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/tracing/platform_tracing.rb', line 12

def platform_keys
  @platform_keys
end

Class Method Details

.use(schema_defn, options = {}) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/tracing/platform_tracing.rb', line 79

def self.use(schema_defn, options = {})
  tracer = self.new(options)
  schema_defn.instrument(:field, tracer)
  schema_defn.tracer(tracer)
end

Instance Method Details

#instrument(type, field) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/tracing/platform_tracing.rb', line 59

def instrument(type, field)
  return_type = field.type.unwrap
  case return_type
  when GraphQL::ScalarType, GraphQL::EnumType
    if field.trace || (field.trace.nil? && @trace_scalars)
      trace_field(type, field)
    else
      field
    end
  else
    trace_field(type, field)
  end
end

#trace(key, data) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/tracing/platform_tracing.rb', line 21

def trace(key, data)
  case key
  when "lex", "parse", "validate", "analyze_query", "analyze_multiplex", "execute_query", "execute_query_lazy", "execute_multiplex"
    platform_key = @platform_keys.fetch(key)
    platform_trace(platform_key, key, data) do
      yield
    end
  when "execute_field", "execute_field_lazy"
    if data[:context]
      field = data[:context].field
      platform_key = field.metadata[:platform_key]
      trace_field = true # implemented with instrumenter
    else
      field = data[:field]
      # Lots of duplicated work here, can this be done ahead of time?
      platform_key = platform_field_key(field.owner, field)
      return_type = field.type.unwrap
      # Handle LateBoundTypes, which don't have `#kind`
      trace_field = if return_type.respond_to?(:kind) && (return_type.kind.scalar? || return_type.kind.enum?)
        (field.trace.nil? && @trace_scalars) || field.trace
      else
        true
      end
    end

    if platform_key && trace_field
      platform_trace(platform_key, key, data) do
        yield
      end
    else
      yield
    end
  else
    # it's a custom key
    yield
  end
end

#trace_field(type, field) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/tracing/platform_tracing.rb', line 73

def trace_field(type, field)
  new_f = field.redefine
  new_f.metadata[:platform_key] = platform_field_key(type, field)
  new_f
end