Class: NaviClient::Local

Inherits:
Object
  • Object
show all
Includes:
Client
Defined in:
lib/local/navi_local_client.rb

Overview

This class represents the client for local lockbox mode. In local-lockbox mode, all the content will be saved and also being used from the local file system

Constant Summary collapse

CONFIG_PATH = 
File.join(ENV['HOME'], '/.navi/config.yml')

Instance Method Summary collapse

Methods included from Client

#depcrecated_encrypt, #encrypt, #errors, #imap_connection, #logToLoggly, #logger, #process_email, #retrieve_emails, #setupLoggly, #shutdown, #time_now

Constructor Details

#initialize(sso_web_url = 'http://localhost:3008', client_type = "local", gen_csv_url = "http://localhost:3020/v2/generate_csv_input", debug = true, env = "development") ⇒ Local

Returns a new instance of Local.



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# File 'lib/local/navi_local_client.rb', line 13

def initialize(sso_web_url = 'http://localhost:3008', client_type = "local", gen_csv_url = "http://localhost:3020/v2/generate_csv_input", debug = true, env = "development")
  # flag to print Ruby library debug info (very detailed)
  @net_imap_debug = false

  # flag to mark email as read after gets downloaded.
  @mark_as_read = false

  # flag to turn on/off debug mode.
  @debug = debug

  # override the log file
  mkdir_if_not_exist(config['client_log_file'])
  @logger = Logger.new(config['client_log_file'])

  # sso_web (authentication) config.
  @sso_web_url = sso_web_url
  # authentication token received from sso_web used to authenticate the request to database_api
  @token = nil

  @download_path = config['download_path'] + config['username'] + '/'
  @current_user_email = config['username']

  # client_type
  @client_type = client_type
  @gen_csv_url = gen_csv_url
  @env = env
end

Instance Method Details

#config ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 202

def config
  YAML.load_file(CONFIG_PATH)
end

#download(message, custom_uid) ⇒ Object

Downloads the email content from imap-server and save it to the download_path



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# File 'lib/local/navi_local_client.rb', line 70

def download(message, custom_uid)
  download_path = config['download_path'] + config['username'] + '/'
  if ['text/plain', 'text/html'].include? message.mime_type

    h = Hash.new
    out_file = download_path + message.mime_type + "/"+custom_uid
    mkdir_if_not_exist(out_file)

    File.open(out_file, 'w') { |file| file.write(encrypt(message.decoded)) }
    key = message.mime_type.split("/").join("_")

    h[key] = out_file
    return h
  end
end

#getMessageUUIds(path) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 215

def getMessageUUIds(path)
  File.directory?(path) ? (Dir.entries path).map { |i| i.split("_").first.to_i } : []
end

#idle_loop(imap, search_condition, folder, server, username, password) ⇒ Object

idle_loop

check for any further mail with “real-time” responsiveness. retrieve any mail from a folder, following specified search condition for any mail retrieved call a specified block



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# File 'lib/local/navi_local_client.rb', line 149

def idle_loop(imap, search_condition, folder, server, username, password)

  @logger.info "\nwaiting new mails (IDLE loop)..."

  loop do
    begin
      imap.select folder
      imap.idle do |resp|

        # You'll get all the things from the server. For new emails (EXISTS)
        if resp.kind_of?(Net::IMAP::UntaggedResponse) and resp.name == "EXISTS"

          @logger.debug resp.inspect if @debug
          # Got something. Send DONE. This breaks you out of the blocking call
          imap.idle_done
        end
      end

      # We're out, which means there are some emails ready for us.
      # Go do a search for UNSEEN and fetch them.
      filenames = []
      retrieve_emails(imap, search_condition, folder) { |mail, i, isLast, id| filenames << process_email(mail, id)}
      self.send_request(filenames)

      HTTPService::NaviAI.generate_csv("#{@gen_csv_url}?email=#{username}", @token)

      @logger.debug "Process Completed." if @debug

    rescue SignalException => e
      # http://stackoverflow.com/questions/2089421/capturing-ctrl-c-in-ruby
      @logger.info "Signal received at #{time_now}: #{e.class}. #{e.message}"
      shutdown imap

    rescue Net::IMAP::Error => e
      @logger.error "Net::IMAP::Error at #{time_now}: #{e.class}. #{e.message}"

      # timeout ? reopen connection
      imap = imap_connection(server, username, password) #if e.message == 'connection closed'
      @logger.info "reconnected to server: #{server}"

    rescue Exception => e
      @logger.error "Something went wrong at #{time_now}: #{e.class}. #{e.message}"

      imap = imap_connection(server, username, password)
      @logger.info "reconnected to server: #{server}"
    end
  end
end

#initate_csv_generation(username) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 198

def initate_csv_generation(username)
  HTTPService::NaviAI.generate_csv("#{@gen_csv_url}?email=#{username}", @token)
end

#login ⇒ Object

login

login to the navi-cloud and get the authentication token



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# File 'lib/local/navi_local_client.rb', line 46

def 
  url = "#{@sso_web_url}/oauth/token"
  provider_url = url
  token = HTTParty.post(provider_url,
                         body: {
                           client_id: config["uid"], # get from sso_web application
                           client_secret: config["secret_key"],
                           grant_type: "client_credentials"
                         }
                        )['access_token']
  @token = "Token: #{token}##{config['username']}"
end

#mkdir_if_not_exist(filepath) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 135

def mkdir_if_not_exist(filepath)
  dirname = File.dirname(filepath)
  unless File.directory?(dirname)
    FileUtils.mkdir_p(dirname)
  end
end

#override_logger(logger) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 59

def override_logger(logger)
  @logger = logger
end

#parse_prev_failed_emails ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 223

def parse_prev_failed_emails
  file =  @download_path + 'inputs/temp'
  if File.file? file
    @logger.debug "Parsing previously fetched emails"
    HTTPService::NaviAI.start(filepath: file, client_type: @client_type, token: @token, email: @current_user_email )
    FileUtils.rm_f file
    @logger.debug "Complete Ok..."
  end

end

#save(data = {}, filename) ⇒ Object

save data to download_path with file named by filename params. Input is hashmap, and it save the hashmap as yml format.



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# File 'lib/local/navi_local_client.rb', line 90

def save(data={}, filename)
  download_path = config['download_path'] + config['username'] + '/'
  temp_path = config['download_path'] + config['username'] + '/inputs/temp'
  filepath = download_path + filename + ".yml"

  mkdir_if_not_exist(filepath)
  mkdir_if_not_exist(temp_path)
  File.open(filepath, 'w') do |f|
    f.puts(data.to_yaml)
  end

  File.open(temp_path, 'a') do |f|
    f.puts(filepath)
  end

  return filepath
end

#save_aes_key_iv(key, iv) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 206

def save_aes_key_iv(key, iv)
  aes_key_path = File.join(ENV['HOME'] + '/.navi/.aes.key')
  iv_path = File.join(ENV['HOME'] + '/.navi/.aes.iv')

  File.open(aes_key_path, "w") { |f| f.write(Base64.encode64(key)) }
  File.open(iv_path, "w") { |f| f.write(Base64.encode64(iv)) }
  return aes_key_path, iv_path
end

#send_request(in_filenames = []) ⇒ Object

send bulk request to navi-ai service with list of input files downloaded from imap server.



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# File 'lib/local/navi_local_client.rb', line 111

def send_request(in_filenames = [])
  unless in_filenames.empty?
    download_path = config['download_path']
    filename = download_path + config['username'] + "/inputs/" + (Time.now.to_f * 1000).to_s

    filename_temp = download_path + config['username'] + "/inputs/temp"

    mkdir_if_not_exist(filename)

    File.open(filename, 'w') do |f|
      in_filenames.each { |element| f.puts(element) }
    end

    # this step might not be required as it is done in the prev download step
    File.open(filename_temp, 'w') do |f|
      in_filenames.each { |element| f.puts(element) }
    end

    response = HTTPService::NaviAI.start(filepath: filename, client_type: @client_type, token: @token, email: config['username'])
    FileUtils.rm_f filename_temp if File.file? filename_temp
    return response
  end
end

#set_token(token) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 63

def set_token(token)
  @token = token
end

#update_config(data) ⇒ Object 



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# File 'lib/local/navi_local_client.rb', line 219

def update_config(data)
  File.write(CONFIG_PATH, YAML.dump(data))
end