Add exclude_task decorator in os_type

[snf-image-creator] / image_creator / util.py

diff --git a/image_creator/util.py b/image_creator/util.py
index f912fe7..588d2b0 100644 (file)
--- a/image_creator/util.py
+++ b/image_creator/util.py
@@ -31,7 +31,11 @@
 # interpreted as representing official policies, either expressed
 # or implied, of GRNET S.A.
 
+import sys
 import pbs
+from clint.textui import colored, progress as uiprogress
+
+silent = False
 
 
 def get_command(command):
@@ -46,3 +50,48 @@ def get_command(command):
         return pbs.__getattr__(command)
     except pbs.CommadNotFount as e:
         return find_sbin_command(command, e)
+
+
+def error(msg, new_line=True):
+    nl = "\n" if new_line else ''
+    sys.stderr.write('Error: %s' % msg + nl)
+
+
+def warn(msg, new_line=True):
+    if not silent:
+        nl = "\n" if new_line else ''
+        sys.stderr.write(colored.yellow("Warning: %s" % msg) + nl)
+
+
+def success(msg, new_line=True):
+    if not silent:
+        nl = "\n" if new_line else ''
+        sys.stdout.write(colored.green(msg) + nl)
+        if not nl:
+            sys.stdout.flush()
+
+
+def output(msg="", new_line=True):
+    if not silent:
+        nl = "\n" if new_line else ''
+        sys.stdout.write(msg + nl)
+        if not nl:
+            sys.stdout.flush()
+
+
+def progress(label='', n=100):
+
+    PROGRESS_LENGTH = 32
+    MESSAGE_LENGTH = 32
+
+    def progress_generator(label, n):
+        position = 0
+        for i in uiprogress.bar(range(n), label.ljust(MESSAGE_LENGTH), \
+                                                    PROGRESS_LENGTH, silent):
+            if i < position:
+                continue
+            position = yield
+        yield  # suppress the StopIteration exception
+    return progress_generator(label, n)
+
+# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :