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require 'jsonapi/renderer/resources_processor'
module JSONAPI
class Renderer
# @private
class CachedResourcesProcessor < ResourcesProcessor
class JSONString < String
def to_json(*)
self
end
end
def initialize(cache)
@cache = cache
end
def process_resources
# NOTE(beauby): This is necessary for cache keys consistency.
@include_rels = @include_rels.each_with_object({}) do |(k, v), h|
h[k] = v.to_a.sort!
end
[@primary, @included].each do |resources|
cache_hash = cache_key_map(resources)
processed_resources = @cache.fetch_multi(*cache_hash.keys) do |key|
res, include, fields = cache_hash[key]
json = res.as_jsonapi(include: include, fields: fields).to_json
JSONString.new(json)
end
resources.replace(processed_resources.values)
end
end
def cache_key_map(resources)
resources.each_with_object({}) do |res, h|
ri = [res.jsonapi_type, res.jsonapi_id]
include_dir = @include_rels[ri]
fields = @fields[ri.first.to_sym]
h[res.jsonapi_cache_key(include: include_dir, fields: fields)] =
[res, include_dir, fields]
end
end
end
end
end
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