Source code for spython.logger.message

# Copyright (C) 2017-2022 Vanessa Sochat.

# This Source Code Form is subject to the terms of the
# Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed
# with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

import os
import sys
from .spinner import Spinner
from spython.logger import decodeUtf8String

ABORT = -5
CRITICAL = -4
ERROR = -3
WARNING = -2
LOG = -1
INFO = 1
CUSTOM = 1
QUIET = 0
VERBOSE = VERBOSE1 = 2
VERBOSE2 = 3
VERBOSE3 = 4
DEBUG = 5

PURPLE = "\033[95m"
YELLOW = "\033[93m"
RED = "\033[91m"
DARKRED = "\033[31m"
CYAN = "\033[36m"


[docs]class SingularityMessage: def __init__(self, MESSAGELEVEL=None): self.level = get_logging_level() self.history = [] self.errorStream = sys.stderr self.outputStream = sys.stdout self.colorize = self.useColor() self.colors = { ABORT: DARKRED, CRITICAL: RED, ERROR: RED, WARNING: YELLOW, LOG: PURPLE, CUSTOM: PURPLE, DEBUG: CYAN, "OFF": "\033[0m", # end sequence "CYAN": CYAN, "PURPLE": PURPLE, "RED": RED, "DARKRED": DARKRED, "YELLOW": YELLOW, } # Colors --------------------------------------------
[docs] def useColor(self): """useColor will determine if color should be added to a print. Will check if being run in a terminal, and if has support for ascii """ COLORIZE = get_user_color_preference() if COLORIZE is not None: return COLORIZE streams = [self.errorStream, self.outputStream] for stream in streams: if not hasattr(stream, "isatty"): return False if not stream.isatty(): return False return True
[docs] def addColor(self, level, text): """addColor to the prompt (usually prefix) if terminal supports, and specified to do so """ if self.colorize: if level in self.colors: text = "%s%s%s" % (self.colors[level], text, self.colors["OFF"]) return text
[docs] def emitError(self, level): """determine if a level should print to stderr, includes all levels but INFO and QUIET """ if level in [ ABORT, ERROR, WARNING, VERBOSE, VERBOSE1, VERBOSE2, VERBOSE3, DEBUG, ]: return True return False
[docs] def emitOutput(self, level): """determine if a level should print to stdout only includes INFO""" if level in [LOG, INFO]: return True return False
[docs] def isEnabledFor(self, messageLevel): """check if a messageLevel is enabled to emit a level""" if messageLevel <= self.level: return True return False
[docs] def emit(self, level, message, prefix=None, color=None): """emit is the main function to print the message optionally with a prefix :param level: the level of the message :param message: the message to print :param prefix: a prefix for the message """ if color is None: color = level if prefix is not None: prefix = self.addColor(color, "%s " % (prefix)) else: prefix = "" message = self.addColor(color, message) # Add the prefix message = "%s%s" % (prefix, message) if not message.endswith("\n"): message = "%s\n" % message # If the level is quiet, only print to error if self.level == QUIET: pass # Otherwise if in range print to stdout and stderr elif self.isEnabledFor(level): if self.emitError(level): self.write(self.errorStream, message) else: self.write(self.outputStream, message) # Add all log messages to history self.history.append(message)
[docs] def write(self, stream, message): """write will write a message to a stream, first checking the encoding """ stream.write(decodeUtf8String(message))
[docs] def get_logs(self, join_newline=True): """'get_logs will return the complete history, joined by newline (default) or as is. """ if join_newline: return "\n".join(self.history) return self.history
[docs] def show_progress( self, iteration, total, length=40, min_level=0, prefix=None, carriage_return=True, suffix=None, symbol=None, ): """create a terminal progress bar, default bar shows for verbose+ :param iteration: current iteration (Int) :param total: total iterations (Int) :param length: character length of bar (Int) """ percent = 100 * (iteration / float(total)) progress = int(length * iteration // total) if suffix is None: suffix = "" if prefix is None: prefix = "Progress" # Download sizes can be imperfect, setting carriage_return to False # and writing newline with caller cleans up the UI if percent >= 100: percent = 100 progress = length if symbol is None: symbol = "=" if progress < length: bar = symbol * progress + "|" + "-" * (length - progress - 1) else: bar = symbol * progress + "-" * (length - progress) # Only show progress bar for level > min_level if self.level > min_level: percent = "%5s" % ("{0:.1f}").format(percent) output = "\r" + prefix + " |%s| %s%s %s" % (bar, percent, "%", suffix) sys.stdout.write(output) if iteration == total and carriage_return: sys.stdout.write("\n") sys.stdout.flush()
# Logging ------------------------------------------
[docs] def abort(self, message): self.emit(ABORT, message, "ABORT")
[docs] def critical(self, message): self.emit(CRITICAL, message, "CRITICAL")
[docs] def error(self, message): self.emit(ERROR, message, "ERROR")
[docs] def exit(self, message, return_code=1): self.emit(ERROR, message, "ERROR") sys.exit(return_code)
[docs] def warning(self, message): self.emit(WARNING, message, "WARNING")
[docs] def log(self, message): self.emit(LOG, message, "LOG")
[docs] def custom(self, prefix, message, color=PURPLE): self.emit(CUSTOM, message, prefix, color)
[docs] def info(self, message): self.emit(INFO, message)
[docs] def newline(self): return self.info("")
[docs] def verbose(self, message): self.emit(VERBOSE, message, "VERBOSE")
[docs] def println(self, message): print(message)
[docs] def verbose1(self, message): self.emit(VERBOSE, message, "VERBOSE1")
[docs] def verbose2(self, message): self.emit(VERBOSE2, message, "VERBOSE2")
[docs] def verbose3(self, message): self.emit(VERBOSE3, message, "VERBOSE3")
[docs] def debug(self, message): self.emit(DEBUG, message, "DEBUG")
[docs] def is_quiet(self): """is_quiet returns true if the level is under 1""" if self.level < 1: return False return True
# Terminal ------------------------------------------
[docs] def table(self, rows, col_width=2): """table will print a table of entries. If the rows is a dictionary, the keys are interpreted as column names. if not, a numbered list is used. """ labels = [str(x) for x in range(1, len(rows) + 1)] if isinstance(rows, dict): labels = list(rows.keys()) rows = list(rows.values()) for row in rows: label = labels.pop(0) label = label.ljust(col_width) message = "\t".join(row) self.custom(prefix=label, message=message)
[docs]def get_logging_level(): """configure a logging to standard out based on the user's selected level, which should be in an environment variable called MESSAGELEVEL. if MESSAGELEVEL is not set, the info level (1) is assumed (all informational messages). """ level = os.environ.get("MESSAGELEVEL", "1") # INFO if level == "CRITICAL": return CRITICAL elif level == "ABORT": return ABORT elif level == "ERROR": return ERROR elif level == "WARNING": return WARNING elif level == "LOG": return LOG elif level == "INFO": return INFO elif level == "QUIET": return QUIET elif level.startswith("VERBOSE"): return VERBOSE3 elif level == "LOG": return LOG elif level == "DEBUG": return DEBUG else: level = int(level) return level
[docs]def get_user_color_preference(): COLORIZE = os.environ.get("SINGULARITY_COLORIZE", None) if COLORIZE is not None: COLORIZE = convert2boolean(COLORIZE) return COLORIZE
[docs]def convert2boolean(arg): """convert2boolean is used for environmental variables that must be returned as boolean""" if not isinstance(arg, bool): return arg.lower() in ("yes", "true", "t", "1", "y") return arg
SingularityMessage.spinner = Spinner() bot = SingularityMessage()