Logging

Usage

use Logging;

or

import Logging;

enum LogLevel { DEBUG, INFO, WARN, ERROR, CRITICAL }

• The LogLevel enum is used to provide a strongly-typed means of

• configuring the logging level of a Logger object

enum constant DEBUG

enum constant INFO

enum constant WARN

enum constant ERROR

enum constant CRITICAL

enum LogChannel { CONSOLE, FILE }

• The LogChannel enum is used to provide a strongly-typed means of

• configuring the channel such as stdout or file where log messages

• are written.

enum constant CONSOLE

enum constant FILE

class OutputHandler

• The OutputHandler class defines the interface for all derived

• classes that write log messages to various channels.

proc write(message: string) throws

class ConsoleOutputHandler : OutputHandler

• The ConsoleOutputHandler writes log messages to the Arkouda console.

override proc write(message: string) throws

class FileOutputHandler : OutputHandler

• The FileOutputHandler writes log messages to the configured filePath.

var filePath : string

proc init(filePath: string)

override proc write(message: string) throws

proc writeToFile(filePath: string, line: string) throws

• Writes to file, creating file if it does not exist

proc getOutputHandler(channel: LogChannel) : owned OutputHandler throws

• getOutputHandler is a factory method for OutputHandler implementations.

class Logger

• The Logger class provides structured log messages at various levels

• of logging sensitivity analogous to other languages such as Python.

var level : LogLevel = LogLevel.INFO

var warnLevels = new set(LogLevel, [LogLevel.WARN, LogLevel.INFO, LogLevel.DEBUG])

var criticalLevels = new set(LogLevel, [LogLevel.CRITICAL, LogLevel.WARN, LogLevel.INFO, LogLevel.DEBUG])

var errorLevels = new set(LogLevel, [LogLevel.ERROR, LogLevel.CRITICAL, LogLevel.WARN, LogLevel.INFO, LogLevel.DEBUG])

var infoLevels = new set(LogLevel, [LogLevel.INFO, LogLevel.DEBUG])

var printDate : bool = true

var outputHandler : owned OutputHandler = try! getOutputHandler(LogChannel.CONSOLE)

proc init()

proc init(level: LogLevel)

proc init(level: LogLevel, channel: LogChannel)

proc debug(moduleName, routineName, lineNumber, msg: string) throws

proc info(moduleName, routineName, lineNumber, msg: string) throws

proc warn(moduleName, routineName, lineNumber, msg: string) throws

proc critical(moduleName, routineName, lineNumber, msg: string) throws

proc error(moduleName, routineName, lineNumber, msg: string) throws

proc generateErrorMsg(moduleName: string, routineName, lineNumber, error) throws

proc generateLogMessage(moduleName: string, routineName, lineNumber, msg, level: string) throws

proc generateDateTimeString() throws