Class: ContentServer::RemoteContentClient
- Inherits:
-
Object
- Object
- ContentServer::RemoteContentClient
- Defined in:
- lib/content_server/remote_content.rb
Overview
Remote Content (client) - Periodically requests remote content (content server) from Remote Content Server. Stores locally the remote content data structure. Remote content client protocol based on time. Each n seconds it requests content from Remote Content Client connects to server (tcp/ip) and waits for request. remote_content_save_timeout is pre defined in config-backup_server.yml
Instance Method Summary collapse
-
#initialize(host, port, local_backup_folder) ⇒ RemoteContentClient
constructor
initializes class variables.
-
#receive_content(message) ⇒ Object
Receives content data, and writes it to file Unchanged data will not be saved.
-
#run ⇒ Object
Runs Remote content client.
Constructor Details
#initialize(host, port, local_backup_folder) ⇒ RemoteContentClient
initializes class variables
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# File 'lib/content_server/remote_content.rb', line 23 def initialize(host, port, local_backup_folder) @remote_tcp = Networking::TCPClient.new(host, port, method(:receive_content)) @last_fetch_timestamp = nil @last_content_data_id = nil @content_server_content_data_path = File.join(local_backup_folder, 'remote', host + '_' + port.to_s) Log.debug3("Initialized RemoteContentClient: host:%s port:%s local_backup_folder:%s", host, port, local_backup_folder) end |
Instance Method Details
#receive_content(message) ⇒ Object
Receives content data, and writes it to file Unchanged data will not be saved
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# File 'lib/content_server/remote_content.rb', line 36 def receive_content() Log.info("Backup server received Remote content data") @last_fetch_timestamp = Time.now.to_i # Update remote content data and write to file if changed ContentData received if(.unique_id != @last_content_data_id) path = File.join(@content_server_content_data_path, @last_fetch_timestamp.to_s + '.cd') FileUtils.makedirs(@content_server_content_data_path) unless \ File.directory?(@content_server_content_data_path) $remote_content_data_lock.synchronize{ $remote_content_data = $remote_content_data.to_file(path) @last_content_data_id = .unique_id # save last content data ID } Log.debug1("Written content data to file:%s.", path) else Log.debug1("No need to write remote content data, it has not changed.") end end |
#run ⇒ Object
Runs Remote content client
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# File 'lib/content_server/remote_content.rb', line 57 def run() Log.debug1("Running remote content client.") threads = [] threads << @remote_tcp.tcp_thread if @remote_tcp != nil threads << Thread.new do loop do # if need content data sleep_time_span = Params['remote_content_save_timeout'] if @last_fetch_timestamp sleep_time_span = Time.now.to_i - @last_fetch_timestamp end Log.debug1("sleep_time_span: %s", sleep_time_span) if sleep_time_span >= Params['remote_content_save_timeout'] # Send ping! @remote_tcp.send_obj(nil) Log.info("sending ping request for remote content data!") end sleep(sleep_time_span) if sleep_time_span > 0 end end end |