Implement OpenVZ exporter

installer/slave/exporter.py

@@ -1,3 +1,101 @@
+import os, subprocess, sys, re, json, setuplib, time
+
+BOLD_START = '\033[1m'
+BOLD_END = '\033[0m'
+
+beancounter_keys = ["KMEMSIZE", "LOCKEDPAGES", "PRIVVMPAGES", "SHMPAGES", "NUMPROC", "PHYSPAGES", 
+	"VMGUARPAGES", "OOMGUARPAGES", "NUMTCPSOCK", "NUMFLOCK", "NUMPTY", "NUMSIGINFO", 
+	"TCPSNDBUF", "TCPRCVBUF", "OTHERSOCKBUF", "DGRAMRCVBUF", "NUMOTHERSOCK", 
+	"DCACHESIZE", "NUMFILE", "AVNUMPROC", "NUMIPTENT", "DISKSPACE", "DISKINODES", 
+	"QUOTATIME", "CPUUNITS"]
+
 def run():
 	# Check if the OpenVZ kernel is active
-	pass
+	r, w = os.pipe()
+	subprocess.call(["ps", "ax"], stdout=w)
+	found = False
+
+	for process in os.read(r, 134217728).splitlines():
+		if "vzmond" in process:
+			found = True
+			
+	if found == False:
+		sys.stderr.write("WARNING: OpenVZ kernel not detected as being active. Restart the\n")
+		sys.stderr.write(" system with the OpenVZ kernel enabled and manually run the exporter.\n")
+		return False
+	
+	# Start exporting
+	
+	containers = {}
+	
+	r, w = os.pipe()
+	subprocess.call(["vzlist", "-Ha", "-o", "ctid,status"], stdout=w)
+
+	for line in os.read(r, 134217728).splitlines():
+		ctid, status = line.split()
+		
+		iplist = []
+		nameservers = []
+		beancounters = {}
+		parameters = {}
+		
+		autorun = False
+		hostname = None
+		template = None
+		
+		for line in open("/etc/vz/conf/%s.conf" % ctid, "r"):
+			if line.startswith("#"):
+				continue
+			
+			if line.strip() == "":
+				continue
+			
+			key, value = line.split("=", 1)
+			
+			key = key.strip()
+			value = value.strip()[1:-1]
+			
+			if key in ["VE_ROOT", "VE_PRIVATE", "ORIGIN_SAMPLE"]:
+				# We don't really care about these, so we can ignore them.
+				continue
+				
+			elif key in beancounter_keys:
+				# This is a beancounter.
+				beancounters[key.lower()] = value
+			
+			elif key == "ONBOOT":
+				autorun = (value == "yes")
+				
+			elif key == "NAMESERVER":
+				nameservers += value.split()
+			
+			elif key == "IP_ADDRESS":
+				iplist += value.split()
+				
+			elif key == "HOSTNAME":
+				hostname = value
+				
+			elif key == "OSTEMPLATE":
+				template = value
+			
+			else:
+				parameters[key] = value
+		
+		containers[ctid] = {
+			'ip_addresses': iplist,
+			'beancounters': beancounters,
+			'hostname': hostname,
+			'autorun': autorun,
+			'nameservers': nameservers,
+			'parameters': parameters,
+			'status': status,
+			'template': template
+		}
+	
+	setuplib.create_directory("/etc/cvm/exported", True, 0, 0, "u+rwx")
+	
+	export_path = "/etc/cvm/exported/%s.openvz" % time.strftime("%Y%m%d_%H%M%S")
+	
+	setuplib.create_file(export_path, json.dumps({"openvz": containers}), 0, 0, "u+rwx")
+	
+	sys.stdout.write("\n" + BOLD_START + "Your exported data has been stored in %s." % export_path + BOLD_END + "\n")

installer/slave/install.py

@@ -276,8 +276,21 @@ setuplib.create_file("/etc/cvm/version", "slave-0.1\n", cvm_uid, cvm_gid, "u+rwx
 if os.path.exists("/etc/vz/vz.conf"):
 	sys.stdout.write("OpenVZ is already installed.\n")
 	
-	import exporter
-	exporter.run()
+	sys.stdout.write("I can export your current OpenVZ containers for you, so that you can import them into\n")
+	sys.stdout.write("your CVM panel. If you are already using another panel (such as HyperVM or SolusVM),\n")
+	sys.stdout.write("however, you should answer 'no' and use the exporter specific for that panel instead.\n")
+	sys.stdout.write(BOLD_START + "Do you wish to export existing OpenVZ containers?" + BOLD_END + " (Y/n)\n")
+	q = raw_input()
+	
+	if q.lower() in ["n", "no"]:
+		sys.stdout.write(BOLD_START + "CVM slave node installation successfully finished!" + BOLD_END + "\n")
+	else:
+		import exporter
+		
+		if exporter.run() == True:
+			sys.stdout.write(BOLD_START + "CVM slave node installation successfully finished!" + BOLD_END + "\n")
+		else:
+			sys.stdout.write(BOLD_START + "Something went wrong during exporting. Otherwise, the CVM slave node installation successfully finished!" + BOLD_END + "\n")
 else:
 	sys.stdout.write("Installing OpenVZ...\n")
 	packages = ["vzctl", "vzquota"]