variables: added missed source file

Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>

tuned/profiles/variables.py

@@ -0,0 +1,65 @@
+import os
+import re
+import tuned.logs
+import tuned.consts as consts
+from tuned.utils.commands import commands
+from configobj import ConfigObj
+
+log = tuned.logs.get()
+
+class Variables():
+	"""
+	Storage and processing of variables used in profiles
+	"""
+
+	def __init__(self):
+		self._cmd = commands()
+		self._lookup_re = {}
+		self._lookup_env = {}
+
+	def _add_env_prefix(self, s, prefix):
+		if s.find(prefix) == 0:
+			return s
+		return prefix + s
+
+	def add_variable(self, variable, value):
+		if value is None:
+			return
+		s = str(variable)
+		v = self.expand(value)
+		self._lookup_re[r'\$' + re.escape(s) + r'\b'] = v
+		self._lookup_env[self._add_env_prefix(s, consts.ENV_PREFIX)] = v
+
+	def add_dict(self, d):
+		for item in d:
+			self.add_variable(item, d[item])
+
+	def add_from_file(self, filename):
+		if not os.path.exists(filename):
+			log.error("unable to find variables_file: '%s'" % filename)
+			return
+		try:
+			config = ConfigObj(filename, raise_errors = True)
+		except ConfigObjError:
+			log.error("error parsing variables_file: '%s'" % filename)
+			return
+		for item in config:
+			if isinstance(config[item], dict):
+				self.add_dict(config[item])
+			else:
+				self.add_variable(item, config[item])
+
+	def add_from_cfg(self, cfg, dir_name):
+		for item in cfg:
+			if str(item) == "include":
+				self.add_from_file(os.path.normpath(os.path.join(dir_name, cfg[item])))
+			else:
+				self.add_variable(item, cfg[item])
+
+	def expand(self, value):
+		if value is None:
+			return None
+		return self._cmd.multiple_re_replace(self._lookup_re, str(value))
+
+	def get_env(self):
+		return self._lookup_env