Class: PhusionPassenger::AnalyticsLogger
- Includes:
- Utils
- Defined in:
- lib/phusion_passenger/analytics_logger.rb
Defined Under Namespace
Classes: Connection, Lock, Log
Constant Summary collapse
- RETRY_SLEEP =
0.2
- NETWORK_ERRORS =
[Errno::EPIPE, Errno::ECONNREFUSED, Errno::ECONNRESET, Errno::EHOSTUNREACH, Errno::ENETDOWN, Errno::ENETUNREACH, Errno::ETIMEDOUT]
Constants included from Utils
Instance Attribute Summary collapse
-
#max_connect_tries ⇒ Object
Returns the value of attribute max_connect_tries.
-
#reconnect_timeout ⇒ Object
Returns the value of attribute reconnect_timeout.
Class Method Summary collapse
Instance Method Summary collapse
- #clear_connection ⇒ Object
- #close ⇒ Object
- #continue_transaction(txn_id, group_name, category = :requests, union_station_key = "-") ⇒ Object
-
#initialize(logging_agent_address, username, password, node_name) ⇒ AnalyticsLogger
constructor
A new instance of AnalyticsLogger.
- #new_transaction(group_name, category = :requests, union_station_key = "-") ⇒ Object
Methods included from Utils
#connect_to_server, #generate_random_id, #get_socket_address_type, #global_backtrace_report, included, #install_options_as_ivars, #local_socket_address?, mktmpdir, #print_exception, #process_is_alive?, #require_option, #split_by_null_into_hash
Constructor Details
#initialize(logging_agent_address, username, password, node_name) ⇒ AnalyticsLogger
Returns a new instance of AnalyticsLogger.
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# File 'lib/phusion_passenger/analytics_logger.rb', line 186 def initialize(logging_agent_address, username, password, node_name) @server_address = logging_agent_address @username = username @password = password if node_name && !node_name.empty? @node_name = node_name else @node_name = `hostname`.strip end @random_dev = File.open("/dev/urandom") # This mutex protects the following instance variables, but # not the contents of @connection. @mutex = Mutex.new @connection = Connection.new(nil) if @server_address && local_socket_address?(@server_address) @max_connect_tries = 10 else @max_connect_tries = 1 end @reconnect_timeout = 1 @next_reconnect_time = Time.utc(1980, 1, 1) end |
Instance Attribute Details
#max_connect_tries ⇒ Object
Returns the value of attribute max_connect_tries.
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# File 'lib/phusion_passenger/analytics_logger.rb', line 183 def max_connect_tries @max_connect_tries end |
#reconnect_timeout ⇒ Object
Returns the value of attribute reconnect_timeout.
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# File 'lib/phusion_passenger/analytics_logger.rb', line 184 def reconnect_timeout @reconnect_timeout end |
Class Method Details
.new_from_options(options) ⇒ Object
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# File 'lib/phusion_passenger/analytics_logger.rb', line 172 def self.() if ["analytics"] && ["logging_agent_address"] return new(["logging_agent_address"], ["logging_agent_username"], ["logging_agent_password"], ["node_name"]) else return nil end end |
Instance Method Details
#clear_connection ⇒ Object
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# File 'lib/phusion_passenger/analytics_logger.rb', line 211 def clear_connection @mutex.synchronize do @connection.synchronize do @random_dev = File.open("/dev/urandom") if @random_dev.closed? @connection.unref @connection = Connection.new(nil) end end end |
#close ⇒ Object
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# File 'lib/phusion_passenger/analytics_logger.rb', line 221 def close @mutex.synchronize do @connection.synchronize do @random_dev.close @connection.unref @connection = nil end end end |
#continue_transaction(txn_id, group_name, category = :requests, union_station_key = "-") ⇒ Object
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# File 'lib/phusion_passenger/analytics_logger.rb', line 290 def continue_transaction(txn_id, group_name, category = :requests, union_station_key = "-") if !@server_address return Log.new elsif !txn_id || txn_id.empty? raise ArgumentError, "Transaction ID may not be empty" end Lock.new(@mutex).synchronize do |lock| if current_time < @next_reconnect_time return Log.new end Lock.new(@connection.mutex).synchronize do |connection_lock| if !@connection.connected? begin connect connection_lock.reset(@connection.mutex) rescue SystemCallError, IOError @connection.disconnect DebugLogging.warn("Cannot connect to the logging agent at #{@server_address}; " + "retrying in #{@reconnect_timeout} second(s).") @next_reconnect_time = current_time + @reconnect_timeout return Log.new rescue Exception => e @connection.disconnect raise e end end begin @connection.channel.write("openTransaction", txn_id, group_name, "", category, AnalyticsLogger., union_station_key, true) return Log.new(@connection, txn_id) rescue SystemCallError, IOError @connection.disconnect DebugLogging.warn("The logging agent at #{@server_address}" << " closed the connection; will reconnect in " << "#{@reconnect_timeout} second(s).") @next_reconnect_time = current_time + @reconnect_timeout return Log.new rescue Exception => e @connection.disconnect raise e end end end end |
#new_transaction(group_name, category = :requests, union_station_key = "-") ⇒ Object
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# File 'lib/phusion_passenger/analytics_logger.rb', line 231 def new_transaction(group_name, category = :requests, union_station_key = "-") if !@server_address return Log.new elsif !group_name || group_name.empty? raise ArgumentError, "Group name may not be empty" end txn_id = (AnalyticsLogger.current_time.to_i / 60).to_s(36) txn_id << "-#{random_token(11)}" Lock.new(@mutex).synchronize do |lock| if current_time < @next_reconnect_time return Log.new end Lock.new(@connection.mutex).synchronize do |connection_lock| if !@connection.connected? begin connect connection_lock.reset(@connection.mutex) rescue SystemCallError, IOError @connection.disconnect DebugLogging.warn("Cannot connect to the logging agent at #{@server_address}; " + "retrying in #{@reconnect_timeout} second(s).") @next_reconnect_time = current_time + @reconnect_timeout return Log.new rescue Exception => e @connection.disconnect raise e end end begin @connection.channel.write("openTransaction", txn_id, group_name, "", category, AnalyticsLogger., union_station_key, true, true) result = @connection.channel.read if result != ["ok"] raise "Expected logging server to respond with 'ok', but got #{result.inspect} instead" end return Log.new(@connection, txn_id) rescue SystemCallError, IOError @connection.disconnect DebugLogging.warn("The logging agent at #{@server_address}" << " closed the connection; will reconnect in " << "#{@reconnect_timeout} second(s).") @next_reconnect_time = current_time + @reconnect_timeout return Log.new rescue Exception => e @connection.disconnect raise e end end end end |