Add dynamic log level (!1)

Reviewed-on: #1

.drone.yml

@@ -6,16 +6,18 @@ workspace:
   path: /drone/src
 
 steps:
-  - name: test with DEBUG_MODE
+  - name: LOG_LEVEL var set to debug
-    image: python:alpine
+    depends_on: 
+      - clone
+    image: python:3.10-alpine
     pull: if-not-exists
     environment:
-      DEBUG_MODE: 'True'
+      LOG_LEVEL: 'debug'
       TZ: 'Europe/Berlin'
     commands:
       - apk --no-cache add gcc musl-dev tzdata
       - pip3 install --no-cache-dir -r requirements.txt
-      - echo "$DEBUG_MODE"
+      - echo "$LOG_LEVEL"
       - |
         python3 -c 'from loghandler import logger;
         def main():
@@ -27,16 +29,40 @@ steps:
 
         main()'
 
-  - name: test without DEBUG_MODE
+  - name: LOG_LEVEL var set to warning
-    image: python:alpine
+    depends_on: 
+      - clone
+    image: python:3.10-alpine
     pull: if-not-exists
     environment:
-      DEBUG_MODE: 'False'
+      LOG_LEVEL: 'warning'
       TZ: 'Europe/Berlin'
     commands:
       - apk --no-cache add gcc musl-dev tzdata
       - pip3 install --no-cache-dir -r requirements.txt
-      - echo "$DEBUG_MODE"
+      - echo "$LOG_LEVEL"
+      - |
+        python3 -c 'from loghandler import logger;
+        def main():
+          logger.debug("This is a Debug Message")
+          logger.info("This is a Info Message")
+          logger.warning("This is a Warning Message")
+          logger.error("This is a Error Message")
+          logger.critical("This is a Critical Message")
+
+        main()'
+
+  - name: Unset LOG_LEVEL var
+    depends_on: 
+      - clone
+    image: python:3.10-alpine
+    pull: if-not-exists
+    environment:
+      TZ: 'Europe/Berlin'
+    commands:
+      - apk --no-cache add gcc musl-dev tzdata
+      - pip3 install --no-cache-dir -r requirements.txt
+      - echo "$LOG_LEVEL"
       - |
         python3 -c 'from loghandler import logger;
         def main():

README.md

@@ -4,15 +4,27 @@
 
 Simple logger class with colored LogLevel designed to run inside Docker container 
 
-> Debug can be enabled by setting the environment variable
+> Use the environment variable `LOG_LEVEL` to set the log level.
 > 
-> **DEBUG_MODE** = *True*
+> **LOG_LEVEL** = *debug*
+
+## Possible values
+Values can be set case insensitive (DEBUG, debug, Debug).
+- debug
+- info
+- warn
+- warning
+- crit
+- critical
+
+## Requirements 
+- Python 3.10 or higher
 
 ## Usage example
 ```python
-# Usage with os only necessary if environment variable has not been set before (e.g. outside Docker)
+# Setting LOG_LEVEL with `os.environ` is only necessary if environment variable has not been set before (e.g. outside Docker)
 import os
-os.environ['DEBUG_MODE'] = 'True'
+os.environ['LOG_LEVEL'] = 'DEBUG'
 
 from loghandler import logger
 

loghandler.py

@@ -6,18 +6,26 @@ import colorlog
 
 
 def loghandler():
-    debug_mode = os.getenv('DEBUG_MODE', "False")
-    if debug_mode.lower() == "false":
-        debug_mode = False
-
     _logger = colorlog.getLogger(__name__)
-    if debug_mode:
+
-        _logger.setLevel(logging.DEBUG)
+    loglevel = os.getenv('LOG_LEVEL', "INFO")
-    else:
+
-        _logger.setLevel(logging.INFO)
+    match loglevel.lower():
+        case "debug":
+            _logger.setLevel(logging.DEBUG)
+        case "info":
+            _logger.setLevel(logging.INFO)
+        case "warn" | "warning":
+            _logger.setLevel(logging.WARNING)
+        case "error":
+            _logger.setLevel(logging.ERROR)
+        case "crit" | "critical":
+            _logger.setLevel(logging.CRITICAL)
+        case _:
+            raise ValueError("Definied value of LOG_LEVEL is not known. Possible values are debug, info, warn, warning, error, crit and critical.")
 
     handler = colorlog.StreamHandler(sys.stdout)
-    if debug_mode:
+    if loglevel:
         handler.setLevel(logging.DEBUG)
     else:
         handler.setLevel(logging.INFO)