Add new bundle_volume module

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

diff --git a/image_creator/util.py b/image_creator/util.py
index 588d2b0..61cc2a6 100644 (file)
--- a/image_creator/util.py
+++ b/image_creator/util.py
@@ -32,10 +32,12 @@
 # or implied, of GRNET S.A.
 
 import sys
 # or implied, of GRNET S.A.
 
 import sys

-import pbs
-from clint.textui import colored, progress as uiprogress
+import sh
+import hashlib

 
 

-silent = False
+
+class FatalError(Exception):
+    pass

 
 
 def get_command(command):
 
 
 def get_command(command):

@@ -43,55 +45,39 @@ def get_command(command):
         search_paths = ['/usr/local/sbin', '/usr/sbin', '/sbin']
         for fullpath in map(lambda x: "%s/%s" % (x, command), search_paths):
             if os.path.exists(fullpath) and os.access(fullpath, os.X_OK):
         search_paths = ['/usr/local/sbin', '/usr/sbin', '/sbin']
         for fullpath in map(lambda x: "%s/%s" % (x, command), search_paths):
             if os.path.exists(fullpath) and os.access(fullpath, os.X_OK):

-                return pbs.Command(fullpath)
+                return sh.Command(fullpath)

         raise exception
 
     try:
         raise exception
 
     try:

-        return pbs.__getattr__(command)
-    except pbs.CommadNotFount as e:
+        return sh.__getattr__(command)
+    except sh.CommadNotFount as e:

         return find_sbin_command(command, 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()
-
+class MD5:
+    def __init__(self, output):
+        self.out = output

 
 

-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 compute(self, filename, size):

 
 

+        MB = 2 ** 20
+        BLOCKSIZE = 4 * MB  # 4MB

 
 

-def progress(label='', n=100):
+        prog_size = ((size + MB - 1) // MB)  # in MB
+        progressbar = self.out.Progress(prog_size, "Calculating md5sum", 'mb')
+        md5 = hashlib.md5()
+        with open(filename, "r") as src:
+            left = size
+            while left > 0:
+                length = min(left, BLOCKSIZE)
+                data = src.read(length)
+                md5.update(data)
+                left -= length
+                progressbar.goto((size - left) // MB)

 
 

-    PROGRESS_LENGTH = 32
-    MESSAGE_LENGTH = 32
+        checksum = md5.hexdigest()
+        progressbar.success(checksum)

 
 

-    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)
+        return checksum

 
 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
 
 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :