Class: WebSocket::Frame::Data

Inherits:
Object
  • Object
show all
Defined in:
lib/hawkular/operations/operations_api.rb

Overview

helper for parsing the “OperationName=json_payload” messages

Instance Method Summary collapse

Instance Method Details

#to_msg_hash ⇒ Object 



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# File 'lib/hawkular/operations/operations_api.rb', line 35

def to_msg_hash
  operation_name, json = split('=', 2)

  # Check if there is a zip file following JSON.
  # This check is done only in the first 100KB, hoping it's unlikely to
  # have such large amount of JSON before a zip file is attached.
  magic_bits = [
    "\x50\x4B\x03\x04", # "PK" + 0x03 + 0x04 = Regular ZIP file
    "\x50\x4B\x05\x06", # "PK" + 0x05 + 0x06 = Empty ZIP
    "\x50\x4B\x07\x08"  # "PK" + 0x07 + 0x08 = Spanned ZIP
  ]
  search_chunk = json[0, 102_400]
  zip_file = nil

  magic_bits.each do |bits|
    idx = search_chunk.index(bits)

    next unless idx

    zip_file = json[idx..-1]
    json = json[0, idx]
    break
  end

  # Parse JSON and, if received, attach zip file
  json = JSON.parse(json)
  json[:attachments] = zip_file

  # Return processed data
  { operationName: operation_name, data: json }
rescue
  {}
end