1 files changed, 67 insertions, 0 deletions
diff --git a/src/virtBootstrap/progress.py b/src/virtBootstrap/progress.py
new file mode 100644
index 0000000..3463168
--- /dev/null
+++ b/src/virtBootstrap/progress.py
@@ -0,0 +1,67 @@
+# Authors:
+#   Cedric Bosdonnat <cbosdonnat@suse.com>
+#   Radostin Stoyanov <rstoyanov1@gmail.com>
+#
+# Copyright (c) 2017 Radostin Stoyanov
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Store the progress of virt-bootstrap
+"""
+
+
+class Progress(object):
+    """
+    Store progress status and value of virt-bootstrap and
+    inform callback method about change.
+    """
+
+    def __init__(self, callback=None):
+        """
+        If callback method is passed it will be called when the progress
+        value has been changed.
+        """
+        self.progress = {'status': '', 'value': 0}
+        self.callback = callback
+
+    def get_progress(self):
+        """
+        Return "state" and "value" of the progress in python dictionary.
+        """
+        return self.progress.copy()
+
+    def update_progress(self, status=None, value=None, logger=None):
+        """
+        Set status/value and call the callback method if available.
+        Log information message if logger instance was passed.
+
+        @param status: String representing the current state of virt-bootstrap.
+        @param value: The new progress value of virt-bootstrap.
+        @param logger: Reference to logger. If passed info message with
+                       including the status will be logged.
+        """
+        # Note: We do not validate the values stored in progress
+        if isinstance(status, str):
+            self.progress['status'] = status
+        if isinstance(value, (float, int)):
+            self.progress['value'] = value
+
+        try:
+            if logger is not None:
+                logger.info(status)
+            if self.callback is not None:
+                self.callback(self.get_progress())
+        except Exception as err:
+            raise ValueError("Progress update has failed.", err)