From f2daae238f488de9e4f5acd5d946d17811fcca30 Mon Sep 17 00:00:00 2001
From: xavileon <xleon@ac.upc.edu>
Date: Mon, 24 Oct 2011 16:13:19 -0400
Subject: [PATCH] lxc skeleton. create, is_runnng works. Need clean up.

---
 sliver_lxc.py | 88 ++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 73 insertions(+), 15 deletions(-)

diff --git a/sliver_lxc.py b/sliver_lxc.py
index 91f1b06..4b7c956 100644
--- a/sliver_lxc.py
+++ b/sliver_lxc.py
@@ -4,41 +4,99 @@
 
 import accounts
 import logger
+import subprocess
+import os
 
 class Sliver_LXC(accounts.Account):
     """This class wraps LXC commands"""
 
-    SHELL = '/bin/bash'
+    SHELL = '/bin/sh' 
+    # Using /bin/bash triggers destroy root/site_admin destr
     TYPE = 'sliver.LXC'
     # Need to add a tag at myplc to actually use this account
     # type = 'sliver.LXC'
 
     def __init__(self, rec):
-        print "TODO WIP __init__"
-        name=rec['name']
-        logger.verbose ('sliver_lxc: %s init'%name)
+        self.name = rec['name']
+        print "LXC __init__ %s"%(self.name)
+        logger.verbose ('sliver_lxc: %s init'%self.name)
     
+        self.dir = '/vservers/lxc_%s'%(self.name)
+        if not (os.path.isdir(self.dir) and
+            os.access(self.dir, os.R_OK | os.W_OK | os.X_OK)):
+            raise NoSuchVServer, "no such vserver: " + self.name
+        self.config = '/%s/config'%(self.dir)
+        self.fstab  = '/%s/fstab'%(self.dir)
+        self.lxc_log  = '/%s/lxc.log'%(self.dir)
+        self.keys = ''
+        self.rspec = {}
+        self.slice_id = rec['slice_id']
+        self.disk_usage_initialized = False
+        self.initscript = ''
+        self.enabled = True
+        self.configure(rec)
+
     @staticmethod
     def create(name, rec = None):
-        print "TODO create"
+        ''' Create dirs, copy fs image, lxc_create '''
+        print "LXC create %s"%(name)
+        logger.verbose ('sliver_lxc: %s create'%name)
+        dir = '/vservers/%s'%(name)
+        config = '%s/config'%(dir)
+        lxc_log = '%s/lxc.log'%(dir)
+        
+        if not (os.path.isdir(dir) and 
+            os.access(dir, os.R_OK | os.W_OK | os.X_OK)):
+            print 'lxc_create: directory %s does not exist or wrong perms'%(dir)
+            return
+        # Assume for now that the directory is there and with a FS
+        command=[]
+        # be verbose
+        command += ['/bin/bash','-x',]
+        command += ['/usr/bin/lxc-create', '-n', name, '-f', config, '&']
+        print command
+        print subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open(lxc_log, 'a+'), stderr=subprocess.STDOUT, shell=False)
         
     @staticmethod
     def destroy(name):
-        print "TODO destroy"
+        ''' lxc_destroy '''
+        print "LXC destroy %s"%(name)
+        dir = '/vservers/lxc_%s'%(name)
+        lxc_log = '%s/lxc.log'%(dir)
+        command=[]
+        # be verbose
+        command += ['/bin/bash','-x',]
+        command += ['/usr/bin/lxc-destroy', '-n', name]
+
+        subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open(lxc_log, 'a+'), stderr=subprocess.STDOUT, shell=False)
+        print "LXC destroy DONE"
 
     def configure(self, rec):
-        ''' Called by accounts.ensure_created -> start -> _acct.configure '''
-        print "TODO configure" 
-        name=rec['name']
+        print "LXC configure %s"%(self.name) 
 
     def start(self, delay=0):
-        print "TODO start"
-    
+        ''' Check existence? lxc_start '''
+        print "LXC start %s"%(self.name)
+        command=[]
+        # be verbose
+        command += ['/bin/bash','-x',]
+        command += ['/usr/bin/lxc-start', '-n', self.name, '-d']
+        print command
+        subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open(self.lxc_log, 'w+'), stderr=subprocess.STDOUT, shell=False)
+
     def stop(self):
-        print "TODO stop"
+        ''' lxc_stop '''
+        print "LXC stop %s"%(self.name)
     
     def is_running(self):
-        print "TODO is_running"
-        return True
+        print "LXC is_running %s"%(self.name)
+        command = []
+        command += ['/usr/bin/lxc-info -n %s'%(self.name)]
+        print command
+        p = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+        state = p.communicate()[0].split(' ')[2]
+        print state
+        if state == 'RUNNING': return True
+        else: return False
 
-    
+  
-- 
2.43.0