Split crash_gen tool into different functional files/modules

tests/pytest/crash_gen/misc.py

+import threading
+import random
+import logging
+
+
+class CrashGenError(Exception):
+    def __init__(self, msg=None, errno=None):
+        self.msg = msg
+        self.errno = errno
+
+    def __str__(self):
+        return self.msg
+
+
+class LoggingFilter(logging.Filter):
+    def filter(self, record: logging.LogRecord):
+        if (record.levelno >= logging.INFO):
+            return True  # info or above always log
+
+        # Commenting out below to adjust...
+
+        # if msg.startswith("[TRD]"):
+        #     return False
+        return True
+
+
+class MyLoggingAdapter(logging.LoggerAdapter):
+    def process(self, msg, kwargs):
+        return "[{}]{}".format(threading.get_ident() % 10000, msg), kwargs
+        # return '[%s] %s' % (self.extra['connid'], msg), kwargs
+
+
+class Logging:
+    logger = None
+
+    @classmethod
+    def getLogger(cls):
+        return logger
+
+    @classmethod
+    def clsInit(cls, gConfig): # TODO: refactor away gConfig
+        if cls.logger:
+            return
+        
+        # Logging Stuff
+        # global misc.logger
+        _logger = logging.getLogger('CrashGen')  # real logger
+        _logger.addFilter(LoggingFilter())
+        ch = logging.StreamHandler()
+        _logger.addHandler(ch)
+
+        # Logging adapter, to be used as a logger
+        print("setting logger variable")
+        # global logger
+        cls.logger = MyLoggingAdapter(_logger, [])
+
+        if (gConfig.debug):
+            cls.logger.setLevel(logging.DEBUG)  # default seems to be INFO
+        else:
+            cls.logger.setLevel(logging.INFO)
+
+    @classmethod
+    def info(cls, msg):
+        cls.logger.info(msg)
+
+    @classmethod
+    def debug(cls, msg):
+        cls.logger.debug(msg)
+
+    @classmethod
+    def warning(cls, msg):
+        cls.logger.warning(msg)
+
+class Status:
+    STATUS_STARTING = 1
+    STATUS_RUNNING  = 2
+    STATUS_STOPPING = 3
+    STATUS_STOPPED  = 4
+
+# Deterministic random number generator
+class Dice():
+    seeded = False  # static, uninitialized
+
+    @classmethod
+    def seed(cls, s):  # static
+        if (cls.seeded):
+            raise RuntimeError(
+                "Cannot seed the random generator more than once")
+        cls.verifyRNG()
+        random.seed(s)
+        cls.seeded = True  # TODO: protect against multi-threading
+
+    @classmethod
+    def verifyRNG(cls):  # Verify that the RNG is determinstic
+        random.seed(0)
+        x1 = random.randrange(0, 1000)
+        x2 = random.randrange(0, 1000)
+        x3 = random.randrange(0, 1000)
+        if (x1 != 864 or x2 != 394 or x3 != 776):
+            raise RuntimeError("System RNG is not deterministic")
+
+    @classmethod
+    def throw(cls, stop):  # get 0 to stop-1
+        return cls.throwRange(0, stop)
+
+    @classmethod
+    def throwRange(cls, start, stop):  # up to stop-1
+        if (not cls.seeded):
+            raise RuntimeError("Cannot throw dice before seeding it")
+        return random.randrange(start, stop)
+
+    @classmethod
+    def choice(cls, cList):
+        return random.choice(cList)
+
+class Helper:
+    @classmethod
+    def convertErrno(cls, errno):
+        return errno if (errno > 0) else 0x80000000 + errno
+
+class Progress:
+    STEP_BOUNDARY = 0
+    BEGIN_THREAD_STEP = 1
+    END_THREAD_STEP   = 2
+    tokens = {
+        STEP_BOUNDARY:      '.',
+        BEGIN_THREAD_STEP:  '[',
+        END_THREAD_STEP:    '] '
+    }
+
+    @classmethod
+    def emit(cls, token):
+        print(cls.tokens[token], end="", flush=True)