ISEPOS-2280 Added fallback paths for base loggers

matlab/logging/base_logger.m

@@ -63,7 +63,11 @@ classdef base_logger < handle
 
     methods(Access=private)
         function this = base_logger()
-            this.fid = fopen(getenv("APP_LOG_FILE"), 'a');
+            logFileName = getenv("APP_LOG_FILE");
+            if isempty(logFileName)
+                logFileName = 'fallbackPathApplication.log';
+            end
+            this.fid = fopen(logFileName, 'a');
             if this.fid == -1
                 error('Failed to open log file');
             end

octave/logging/base_logger.m

@@ -63,7 +63,11 @@ classdef base_logger < handle
 
     methods
         function this = base_logger()
-            this.fid = fopen(getenv("APP_LOG_FILE"), 'a');
+            logFileName = getenv("APP_LOG_FILE");
+            if isempty(logFileName)
+                logFileName = 'fallbackPathApplication.log';
+            end
+            this.fid = fopen(logFileName, 'a');
             if this.fid == -1
                 error('Failed to open log file');
             end

python/logging/base_logger.py

@@ -11,8 +11,10 @@ def getDefaultLogger(name):
     Retrieves or creates a logger with the specified name and sets it up with a file handler.
     
     The logger is configured to write log messages to the file path specified by the
-    'APP_LOG_FILE' environment variable. It uses the 'INFO' level as the default
+    'APP_LOG_FILE' environment variable. If the environment variable is not set,
-    logging level and writes log entries in the following format:
+    the logger will write to the file 'fallbackPathApplication.log' in the current
+    working directory. The logger uses the 'INFO' level as the default logging level
+    and writes log entries in the following format:
     
     'YYYY-MM-DD HH:MM:SS,ms LEVEL logger_name message'
     
@@ -31,12 +33,8 @@ def getDefaultLogger(name):
     logger : logging.Logger
         A logger instance with the specified name. The logger is configured with a 
         file handler that writes to the file specified by the 'APP_LOG_FILE' 
-        environment variable.
+        environment variable, or to 'fallbackPathApplication.log' if the environment 
-    
+        variable is not set.
-    Raises:
-    -------
-    KeyError:
-        If the 'APP_LOG_FILE' environment variable is not set.
     
     Example:
     --------
@@ -47,10 +45,15 @@ def getDefaultLogger(name):
     except Exception:
         logger.exception('An error occurred')
 
+    Notes:
+    ------
+    - The 'APP_LOG_FILE' environment variable should specify the full path to the log file.
+    - If 'APP_LOG_FILE' is not set, logs will be written to 'fallbackPathApplication.log'.
+
     """
     logger = logging.getLogger(name)
     if not logger.hasHandlers():
-        file_handler = logging.FileHandler(os.environ['APP_LOG_FILE'], mode='a')
+        file_handler = logging.FileHandler(os.environ.get('APP_LOG_FILE', 'fallbackPathApplication.log'), mode='a')
         formatter = logging.Formatter('%(asctime)s,%(msecs)d %(levelname)s %(name)s %(message)s')
         file_handler.setFormatter(formatter)
         logger.addHandler(file_handler)