From aeb4f9729b8936405a5435119b9a5a13f5a03922 Mon Sep 17 00:00:00 2001
From: yves <steve.harrison@gmx.net>
Date: Wed, 14 Dec 2011 00:06:44 +0100
Subject: added first executor version, error handling must be added

---
 createAndExportDisk.py | 38 +++++++++++++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 7 deletions(-)

diff --git a/createAndExportDisk.py b/createAndExportDisk.py
index 535300e..ffa71ca 100755
--- a/createAndExportDisk.py
+++ b/createAndExportDisk.py
@@ -3,6 +3,28 @@
 import optparse
 import sys
 import re
+import subprocess
+
+class ExecutionPlan:
+
+    def __init__(self, commands):
+        self.commands = commands
+        self.executed = []
+        self.logFile = open("/tmp/log","w")
+        self.todo = len(self.commands)
+
+    def execute_all(self):
+        for i in range(len(self.executed),self.todo):
+            print("[" + str(i+1) + "/" + str(self.todo) + "]: excuting ",end="")
+            self.execute_next()
+            print("\r[" + str(i+1) + "/" + str(self.todo) + "]: excuted ")
+
+    def execute_next(self):
+        cmd = self.commands.pop(0)
+        # safty anker subprocess.call(cmd)
+        subprocess.call(['echo','>>>'] + cmd,stdout=self.logFile)
+        subprocess.call(['echo'] + cmd,stdout=self.logFile,stderr=self.logFile)
+        self.executed.append(cmd)
 
 def logInfo(msg):
     print("\033[1;32mINFO\033[0m " + str(msg))
@@ -10,9 +32,6 @@ def logInfo(msg):
 def logErr(msg):
     print("\033[1;31mERROR\033[0m " + str(msg))
 
-def execute(command):
-    logInfo('would execute: ' + str(command))
-
 def parseVmName(rawString):
     # valdiate vm-name
     if not re.match('^vm-[a-z]+[0-9]?(-[a-z])?$',rawString):
@@ -84,10 +103,15 @@ elif len(args) > 1:
 vmName = parseVmName(args[0])
 diskSize, diskSizeUnit = parseDiskSize(options.size)
 
-execute(["lvcreate", "-n", vmName, "-L", str(diskSize) + str(diskSizeUnit)])
-execute(["mkfs", "/dev/" + volumeGroupName + "/" + vmName, "-l",vmName])
-execute(["addIscsiDisk", vmName])
+cmds = [
+    ["lvcreate", "-n", vmName, "-L", str(diskSize) + str(diskSizeUnit)],
+    ["mkfs", "/dev/" + volumeGroupName + "/" + vmName, "-l",vmName],
+    ["addIscsiDisk", vmName]
+]
+
+execPlan = ExecutionPlan(cmds)
+execPlan.execute_all()
 
-logInfo("all done. Proceed to {pang,peng} an install your vm there!")
+logInfo("all done. SSH to (pang|peng).spline.de an install your vm there!")
 sys.exit(0)
 
-- 
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