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"-c", "--config", dest="config_file", help="location of configuration file" + "-c", + "--config", + dest="config_file", + action="store", + help="location of configuration file" ) parser.add_argument( "-o", "--output", dest="output_file", action="store", help="output file" @@ -68,10 +72,15 @@ class PrometheusSD: help="delay between discovery runs" ) parser.add_argument( - "--no-service", - dest="service", - action="store_false", - help="run discovery as a service" + "--no-service", dest="service", action="store_false", help="run discovery only once" + ) + parser.add_argument( + "-f", + "--log-format", + dest="logging.format", + metavar="LOG_FORMAT", + action="store", + help="used log format" ) parser.add_argument( "-v", dest="logging.level", action="append_const", const=-1, help="increase log level" @@ -92,7 +101,9 @@ class PrometheusSD: self.log.sysexit_with_message(e) try: - self.log.set_level(config.config["logging"]["level"]) + self.log.update_logger( + config.config["logging"]["level"], config.config["logging"]["format"] + ) except ValueError as e: self.log.sysexit_with_message("Can not set log level.\n{}".format(str(e))) diff --git a/prometheuspvesd/config.py b/prometheuspvesd/config.py index 6dd6349..f72d0d5 100644 --- a/prometheuspvesd/config.py +++ b/prometheuspvesd/config.py @@ -43,11 +43,11 @@ class Config(): "file": True, "type": environs.Env().str }, - "logging.json": { - "default": False, - "env": "LOG_JSON", + "logging.format": { + "default": "console", + "env": "LOG_FORMAT", "file": True, - "type": environs.Env().bool + "type": environs.Env().str }, "output_file": { "default": default_output_file, @@ -213,6 +213,7 @@ class Config(): defaults.pop("config_file") defaults["logging"]["level"] = defaults["logging"]["level"].upper() + defaults["logging"]["format"] = defaults["logging"]["format"].strip().lower() Path(PurePath(self.config_file).parent).mkdir(parents=True, exist_ok=True) Path(PurePath(defaults["output_file"]).parent).mkdir(parents=True, exist_ok=True) diff --git a/prometheuspvesd/discovery.py b/prometheuspvesd/discovery.py index 3c2474d..f3c8555 100644 --- a/prometheuspvesd/discovery.py +++ b/prometheuspvesd/discovery.py @@ -10,9 +10,9 @@ import requests from prometheuspvesd.config import SingleConfig from prometheuspvesd.exception import APIError +from prometheuspvesd.logger import SingleLog from prometheuspvesd.model import Host from prometheuspvesd.model import HostList -from prometheuspvesd.utils import SingleLog from prometheuspvesd.utils import to_bool try: diff --git a/prometheuspvesd/logger.py b/prometheuspvesd/logger.py new file mode 100644 index 0000000..1411d89 --- /dev/null +++ b/prometheuspvesd/logger.py @@ -0,0 +1,246 @@ +#!/usr/bin/env python3 +"""Global utility methods and classes.""" + +import logging +import os +import sys + +import colorama +from pythonjsonlogger import jsonlogger + +from prometheuspvesd.utils import Singleton +from prometheuspvesd.utils import to_bool + +CONSOLE_FORMAT = "{}{}[%(levelname)s]{} %(message)s" +JSON_FORMAT = "%(asctime)s %(levelname)s %(message)s" + + +def _should_do_markup(): + py_colors = os.environ.get("PY_COLORS", None) + if py_colors is not None: + return to_bool(py_colors) + + return sys.stdout.isatty() and os.environ.get("TERM") != "dumb" + + +colorama.init(autoreset=True, strip=not _should_do_markup()) + + +class LogFilter(object): + """A custom log filter which excludes log messages above the logged level.""" + + def __init__(self, level): + """ + Initialize a new custom log filter. + + :param level: Log level limit + :returns: None + + """ + self.__level = level + + def filter(self, logRecord): # noqa + # https://docs.python.org/3/library/logging.html#logrecord-attributes + return logRecord.levelno <= self.__level + + +class SimpleFormatter(logging.Formatter): + """Logging Formatter for simple logs.""" + + def format(self, record): # noqa + return logging.Formatter.format(self, record) + + +class MultilineFormatter(logging.Formatter): + """Logging Formatter to reset color after newline characters.""" + + def format(self, record): # noqa + record.msg = record.msg.replace("\n", "\n{}... ".format(colorama.Style.RESET_ALL)) + return logging.Formatter.format(self, record) + + +class MultilineJsonFormatter(jsonlogger.JsonFormatter): + """Logging Formatter to remove newline characters.""" + + def format(self, record): # noqa + record.msg = record.msg.replace("\n", " ") + return jsonlogger.JsonFormatter.format(self, record) + + +class Log: + """Handle logging.""" + + def __init__(self, level=logging.WARN, name="prometheuspvesd", log_format="console"): + self.logger = logging.getLogger(name) + self.logger.setLevel(level) + self.logger.addHandler(self._get_error_handler(log_format)) + self.logger.addHandler(self._get_warn_handler(log_format)) + self.logger.addHandler(self._get_info_handler(log_format)) + self.logger.addHandler(self._get_critical_handler(log_format)) + self.logger.addHandler(self._get_debug_handler(log_format)) + self.logger.propagate = False + + def _get_error_handler(self, log_format): + handler = logging.StreamHandler(sys.stderr) + handler.setLevel(logging.ERROR) + handler.addFilter(LogFilter(logging.ERROR)) + + if log_format == "json": + handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) + elif log_format == "simple": + handler.setFormatter(SimpleFormatter()) + else: + handler.setFormatter( + MultilineFormatter( + self.error( + CONSOLE_FORMAT.format( + colorama.Fore.RED, colorama.Style.BRIGHT, colorama.Style.RESET_ALL + ) + ) + ) + ) + + return handler + + def _get_warn_handler(self, log_format): + handler = logging.StreamHandler(sys.stdout) + handler.setLevel(logging.WARN) + handler.addFilter(LogFilter(logging.WARN)) + + if log_format == "json": + handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) + elif log_format == "simple": + handler.setFormatter(SimpleFormatter()) + else: + handler.setFormatter( + MultilineFormatter( + self.warn( + CONSOLE_FORMAT.format( + colorama.Fore.YELLOW, colorama.Style.BRIGHT, colorama.Style.RESET_ALL + ) + ) + ) + ) + + return handler + + def _get_info_handler(self, log_format): + handler = logging.StreamHandler(sys.stdout) + handler.setLevel(logging.INFO) + handler.addFilter(LogFilter(logging.INFO)) + + if log_format == "json": + handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) + elif log_format == "simple": + handler.setFormatter(SimpleFormatter()) + else: + handler.setFormatter( + MultilineFormatter( + self.info( + CONSOLE_FORMAT.format( + colorama.Fore.CYAN, colorama.Style.BRIGHT, colorama.Style.RESET_ALL + ) + ) + ) + ) + + return handler + + def _get_critical_handler(self, log_format): + handler = logging.StreamHandler(sys.stderr) + handler.setLevel(logging.CRITICAL) + handler.addFilter(LogFilter(logging.CRITICAL)) + + if log_format == "json": + handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) + elif log_format == "simple": + handler.setFormatter(SimpleFormatter()) + else: + handler.setFormatter( + MultilineFormatter( + self.critical( + CONSOLE_FORMAT.format( + colorama.Fore.RED, colorama.Style.BRIGHT, colorama.Style.RESET_ALL + ) + ) + ) + ) + + return handler + + def _get_debug_handler(self, log_format): + handler = logging.StreamHandler(sys.stderr) + handler.setLevel(logging.DEBUG) + handler.addFilter(LogFilter(logging.DEBUG)) + + if log_format == "json": + handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) + elif log_format == "simple": + handler.setFormatter(SimpleFormatter()) + else: + handler.setFormatter( + MultilineFormatter( + self.critical( + CONSOLE_FORMAT.format( + colorama.Fore.BLUE, colorama.Style.BRIGHT, colorama.Style.RESET_ALL + ) + ) + ) + ) + + return handler + + def update_logger(self, level=None, log_level=None): + for handler in self.logger.handlers[:]: + self.logger.removeHandler(handler) + + self.logger.setLevel(level) + self.logger.addHandler(self._get_error_handler(log_level)) + self.logger.addHandler(self._get_warn_handler(log_level)) + self.logger.addHandler(self._get_info_handler(log_level)) + self.logger.addHandler(self._get_critical_handler(log_level)) + self.logger.addHandler(self._get_debug_handler(log_level)) + + def debug(self, msg): + """Format info messages and return string.""" + return msg + + def critical(self, msg): + """Format critical messages and return string.""" + return msg + + def error(self, msg): + """Format error messages and return string.""" + return msg + + def warn(self, msg): + """Format warn messages and return string.""" + return msg + + def info(self, msg): + """Format info messages and return string.""" + return msg + + def _color_text(self, color, msg): + """ + Colorize strings. + + :param color: colorama color settings + :param msg: string to colorize + :returns: string + + """ + return "{}{}{}".format(color, msg, colorama.Style.RESET_ALL) + + def sysexit(self, code=1): + sys.exit(code) + + def sysexit_with_message(self, msg, code=1): + self.logger.critical(str(msg)) + self.sysexit(code) + + +class SingleLog(Log, metaclass=Singleton): + """Singleton logging class.""" + + pass diff --git a/prometheuspvesd/utils.py b/prometheuspvesd/utils.py index 38c35e9..bbb37bf 100644 --- a/prometheuspvesd/utils.py +++ b/prometheuspvesd/utils.py @@ -1,33 +1,13 @@ #!/usr/bin/env python3 """Global utility methods and classes.""" -import logging -import os -import sys from distutils.util import strtobool -import colorama -from pythonjsonlogger import jsonlogger - -CONSOLE_FORMAT = "{}{}[%(levelname)s]{} %(message)s" -JSON_FORMAT = "(asctime) (levelname) (message)" - def to_bool(string): return bool(strtobool(str(string))) -def _should_do_markup(): - py_colors = os.environ.get("PY_COLORS", None) - if py_colors is not None: - return to_bool(py_colors) - - return sys.stdout.isatty() and os.environ.get("TERM") != "dumb" - - -colorama.init(autoreset=True, strip=not _should_do_markup()) - - class Singleton(type): """Meta singleton class.""" @@ -37,206 +17,3 @@ class Singleton(type): if cls not in cls._instances: cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs) return cls._instances[cls] - - -class LogFilter(object): - """A custom log filter which excludes log messages above the logged level.""" - - def __init__(self, level): - """ - Initialize a new custom log filter. - - :param level: Log level limit - :returns: None - - """ - self.__level = level - - def filter(self, logRecord): # noqa - # https://docs.python.org/3/library/logging.html#logrecord-attributes - return logRecord.levelno <= self.__level - - -class MultilineFormatter(logging.Formatter): - """Logging Formatter to reset color after newline characters.""" - - def format(self, record): # noqa - record.msg = record.msg.replace("\n", "\n{}... ".format(colorama.Style.RESET_ALL)) - return logging.Formatter.format(self, record) - - -class MultilineJsonFormatter(jsonlogger.JsonFormatter): - """Logging Formatter to remove newline characters.""" - - def format(self, record): # noqa - record.msg = record.msg.replace("\n", " ") - return jsonlogger.JsonFormatter.format(self, record) - - -class Log: - """Handle logging.""" - - def __init__(self, level=logging.WARN, name="prometheuspvesd", json=False): - self.logger = logging.getLogger(name) - self.logger.setLevel(level) - self.logger.addHandler(self._get_error_handler(json=json)) - self.logger.addHandler(self._get_warn_handler(json=json)) - self.logger.addHandler(self._get_info_handler(json=json)) - self.logger.addHandler(self._get_critical_handler(json=json)) - self.logger.addHandler(self._get_debug_handler(json=json)) - self.logger.propagate = False - - def _get_error_handler(self, json=False): - handler = logging.StreamHandler(sys.stderr) - handler.setLevel(logging.ERROR) - handler.addFilter(LogFilter(logging.ERROR)) - handler.setFormatter( - MultilineFormatter( - self.error( - CONSOLE_FORMAT.format( - colorama.Fore.RED, colorama.Style.BRIGHT, colorama.Style.RESET_ALL - ) - ) - ) - ) - - if json: - handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) - - return handler - - def _get_warn_handler(self, json=False): - handler = logging.StreamHandler(sys.stdout) - handler.setLevel(logging.WARN) - handler.addFilter(LogFilter(logging.WARN)) - handler.setFormatter( - MultilineFormatter( - self.warn( - CONSOLE_FORMAT.format( - colorama.Fore.YELLOW, colorama.Style.BRIGHT, colorama.Style.RESET_ALL - ) - ) - ) - ) - - if json: - handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) - - return handler - - def _get_info_handler(self, json=False): - handler = logging.StreamHandler(sys.stdout) - handler.setLevel(logging.INFO) - handler.addFilter(LogFilter(logging.INFO)) - handler.setFormatter( - MultilineFormatter( - self.info( - CONSOLE_FORMAT.format( - colorama.Fore.CYAN, colorama.Style.BRIGHT, colorama.Style.RESET_ALL - ) - ) - ) - ) - - if json: - handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) - - return handler - - def _get_critical_handler(self, json=False): - handler = logging.StreamHandler(sys.stderr) - handler.setLevel(logging.CRITICAL) - handler.addFilter(LogFilter(logging.CRITICAL)) - handler.setFormatter( - MultilineFormatter( - self.critical( - CONSOLE_FORMAT.format( - colorama.Fore.RED, colorama.Style.BRIGHT, colorama.Style.RESET_ALL - ) - ) - ) - ) - - if json: - handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) - - return handler - - def _get_debug_handler(self, json=False): - handler = logging.StreamHandler(sys.stderr) - handler.setLevel(logging.DEBUG) - handler.addFilter(LogFilter(logging.DEBUG)) - handler.setFormatter( - MultilineFormatter( - self.critical( - CONSOLE_FORMAT.format( - colorama.Fore.BLUE, colorama.Style.BRIGHT, colorama.Style.RESET_ALL - ) - ) - ) - ) - - if json: - handler.setFormatter(MultilineJsonFormatter(JSON_FORMAT)) - - return handler - - def set_level(self, s): - self.logger.setLevel(s) - - def debug(self, msg): - """Format info messages and return string.""" - return msg - - def critical(self, msg): - """Format critical messages and return string.""" - return msg - - def error(self, msg): - """Format error messages and return string.""" - return msg - - def warn(self, msg): - """Format warn messages and return string.""" - return msg - - def info(self, msg): - """Format info messages and return string.""" - return msg - - def _color_text(self, color, msg): - """ - Colorize strings. - - :param color: colorama color settings - :param msg: string to colorize - :returns: string - - """ - return "{}{}{}".format(color, msg, colorama.Style.RESET_ALL) - - def sysexit(self, code=1): - sys.exit(code) - - def sysexit_with_message(self, msg, code=1): - self.logger.critical(str(msg)) - self.sysexit(code) - - -class SingleLog(Log, metaclass=Singleton): - """Singleton logging class.""" - - pass - - -class UnsafeTag: - """Handle custom yaml unsafe tag.""" - - yaml_tag = u"!unsafe" - - def __init__(self, value): - self.unsafe = value - - @staticmethod - def yaml_constructor(loader, node): - return loader.construct_scalar(node)