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class Pipe
# the final output block that has to return a feed. Its run-function will call all children block, who will do the same
attr_accessor :output
attr_accessor :title
def initialize(id: nil, pipe: nil, start: nil, params: {})
if (id)
stored_data = Database.instance.getPipe(id: id)
pipe = JSON.parse(stored_data['pipe'])
self.title = stored_data['title']
root = pipe['blocks'].detect{|x| x['id'] == 'output' }
self.output = Block.new
else
pipe = JSON.parse(pipe)
root = pipe['blocks'].detect{|x| x['id'] == start }
self.output = createBlock(root, params)
id = :temp
end
self.output.inputs = createInputs(root['inputs'], pipe, params)
@id = id
@params = params
end
def encodedId()
return Hashids.new("pipedypipe", 8).encode(@id) unless @id == :temp
return "temp"
end
def createBlock(blockData, params)
block = case blockData['type']
when 'FeedBlock' then Feedblock.new
when 'FilterBlock' then Filterblock.new
when 'CombineBlock' then Combineblock.new
when 'DuplicateBlock' then Duplicateblock.new
when 'UniqueBlock' then Uniqueblock.new
when 'TruncateBlock' then Truncateblock.new
when 'SortBlock' then Sortblock.new
when 'DownloadBlock' then Downloadblock.new
when 'ExtractBlock' then Extractblock.new
when 'BuilderBlock' then Builderblock.new
when 'PipeBlock' then Pipeblock.new
when 'WebhookBlock' then Webhookblock.new
when 'ReplaceBlock' then Replaceblock.new
when 'TextinputBlock' then Textinputblock.new
when 'TwitterBlock' then Twitterblock.new
when 'MergeBlock' then Mergeblock.new
when 'InsertBlock' then Insertblock.new
when 'ForeachBlock' then Foreachblock.new
when 'ImagesBlock' then ImagesBlock.new
end
block.options[:userinput] = blockData['userinput'] if blockData['userinput']
block.options[:userinputs] = blockData['userinputs'] if blockData['userinputs']
block.pipe = self
# NOTE: Should this block specific behaviour better be handled inside the block?
case blockData['type']
when 'TextinputBlock'
if params[block.options[:userinputs][0]]
block.options[:userinputs][1] = params[block.options[:userinputs][0]]
end
end
block.id = blockData['id']
return block
end
def createInputs(inputs, pipe, params)
blocks = []
inputs.each do |input|
if input['from']
blockData = pipe['blocks'].detect{|x| x['id'] == input['from'] }
block = createBlock(blockData, params)
block.inputs = createInputs(blockData['inputs'], pipe, params)
block.textinputs = createInputs(blockData['textinputs'], pipe, params) if blockData['textinputs']
blocks.push(block)
else
blocks.push(nil)
end
end
return blocks
end
# execute the pipe
def run(mode: :xml)
if @id == :temp
return output.run
else
id = @id.to_s + mode.to_s + Digest::SHA1.hexdigest(@params.to_s)
result, date = Database.instance.getCache(key: id)
if date.nil? || (date + 600) < Time.now.to_i
result = output.run
if mode == :txt
begin
doc = Nokogiri::XML(result)
contents = doc.xpath('//item/content:encoded')
result = contents.map{|x| x.content.strip }.join("\n")
rescue Nokogiri::XML::XPath::SyntaxError
end
end
Database.instance.cache(key: id, value: result)
end
return result
end
end
end