Sha256: fb2414a722a163f3b70b382c5f84662fbc9cf93b2bf4a3c79b2c62886e5660c9
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Size: 1.65 KB
Versions: 9
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Stored size: 1.65 KB
Contents
# frozen_string_literal: true
module Aws
module Endpoints
# Does substitutions for templated endpoint strings
# @api private
module Templater
class << self
def resolve(string, parameters, assigns)
# scans for strings in curly brackets {}
string.scan(/\{.+?\}/).each do |capture|
value = capture[1..-2] # strips curly brackets
string = string.gsub(capture, replace(value, parameters, assigns))
end
string
end
private
# Replaces the captured value with values from parameters or assign
def replace(capture, parameters, assigns)
# Pound sigil is used for getAttr calls
indexes = capture.split('#')
# no sigil found, just do substitution
if indexes.size == 1
extract_value(capture, parameters, assigns)
# sigil was found, need to call getAttr
elsif indexes.size == 2
ref, property = indexes
param = extract_value(ref, parameters, assigns)
Matchers.attr(param, property)
else
raise "Invalid templatable value: #{capture}"
end
end
# Checks both parameters and assigns hash for the referenced value
def extract_value(key, parameters, assigns)
if assigns.key?(key)
assigns[key]
elsif parameters.class.singleton_class::PARAM_MAP.key?(key)
member_name = parameters.class.singleton_class::PARAM_MAP[key]
parameters[member_name]
else
raise "Templatable value not found: #{key}"
end
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems