class GraphQL::Backtrace::TracedError

When Backtrace is enabled, raised errors are wrapped with TracedError.

Constants

CAUSE_BACKTRACE_PREVIEW_LENGTH: This many lines of the original Ruby backtrace are included in the message
MESSAGE_TEMPLATE

Attributes

context [R]

Returns

GraphQL::Query::Context — The context at the field where the error was raised

graphql_backtrace [R]

Returns

Array<String> — Printable backtrace of GraphQL error context

Public Class Methods

new (err, current_ctx)

Source

# File lib/graphql/backtrace/traced_error.rb, line 33
def initialize(err, current_ctx)
  @context = current_ctx
  backtrace = Backtrace.new(current_ctx, value: err)
  @graphql_backtrace = backtrace.to_a

  cause_backtrace_preview = err.backtrace.first(CAUSE_BACKTRACE_PREVIEW_LENGTH).join("\n    ")

  cause_backtrace_remainder_length = err.backtrace.length - CAUSE_BACKTRACE_PREVIEW_LENGTH
  cause_backtrace_more = if cause_backtrace_remainder_length < 0
    ""
  elsif cause_backtrace_remainder_length == 1
    "... and 1 more line\n"
  else
    "... and #{cause_backtrace_remainder_length} more lines\n"
  end

  message = MESSAGE_TEMPLATE % {
    cause_message: err.message,
    cause_backtrace: cause_backtrace_preview,
    cause_backtrace_more: cause_backtrace_more,
    graphql_table: backtrace.inspect,
  }
  super(message)
end

Calls superclass method