Synnefo

#!/usr/bin/python

import json

import time

import ipaddr

import os

import signal

import ConfigParser

import sys

import re

import random

import subprocess

import shutil

import imp

import tempfile

from snfdeploy import massedit

HEADER = '\033[95m'

OKBLUE = '\033[94m'

OKGREEN = '\033[92m'

WARNING = '\033[93m'

FAIL = '\033[91m'

ENDC = '\033[0m'

def disable_color():

    HEADER = ''

    OKBLUE = ''

    OKGREEN = ''

    WARNING = ''

    FAIL = ''

    ENDC = ''

if not sys.stdout.isatty():

    disable_color()

class Host(object):

    def __init__(self, hostname, ip, mac, domain):

        self.hostname = hostname

        self.ip = ip

        self.mac = mac

        self.domain = domain

    @property

    def fqdn(self):

        return self.hostname + "." + self.domain

    @property

    def arecord(self):

        return self.hostname + " IN A " + self.ip + "\n"

    @property

    def ptrrecord(self):

        return ".".join(raddr(self.ip)) + " IN PTR " + self.fqdn + ".\n"

class Alias(Host):

    def __init__(self, host, alias):

        super(Alias, self).__init__(host.hostname, host.ip, host.mac,

                                    host.domain)

        self.alias = alias

    @property

    def cnamerecord(self):

        return (self.alias + " IN CNAME " + self.hostname + "." +

                self.domain + ".\n")

    @property

    def fqdn(self):

        return self.alias + "." + self.domain

class Env(object):

    def evaluate(self, filename, section):

        for k, v in self.conf.get_section(filename, section):

            setattr(self, k, v)

    def __init__(self, conf):

        self.conf = conf

        for f, sections in conf.files.iteritems():

            for s in sections:

                self.evaluate(f, s)

        self.node2hostname = dict(conf.get_section("nodes", "hostnames"))

        self.node2ip = dict(conf.get_section("nodes", "ips"))

        self.node2mac = dict(conf.get_section("nodes", "macs"))

        self.hostnames = [self.node2hostname[n]

                          for n in self.nodes.split(",")]

        self.ips = [self.node2ip[n]

                    for n in self.nodes.split(",")]

        self.cluster_hostnames = [self.node2hostname[n]

                                  for n in self.cluster_nodes.split(",")]

        self.cluster_ips = [self.node2ip[n]

                            for n in self.cluster_nodes.split(",")]

        self.net = ipaddr.IPNetwork(self.subnet)

        self.nodes_info = {}

        self.hosts_info = {}

        self.ips_info = {}

        for node in self.nodes.split(","):

            host = Host(self.node2hostname[node],

                        self.node2ip[node],

                        self.node2mac[node], self.domain)

            self.nodes_info[node] = host

            self.hosts_info[host.hostname] = host

            self.ips_info[host.ip] = host

        self.cluster = Host(self.cluster_name, self.cluster_ip, None,

                            self.domain)

        self.master = self.nodes_info[self.master_node]

        self.roles = {}

        for role, node in conf.get_section("synnefo", "roles"):

            self.roles[role] = Alias(self.nodes_info[node], role)

            setattr(self, role, self.roles[role])

class Conf(object):

    files = {

        "nodes": ["network", "info"],

        "deploy": ["dirs", "packages", "keys"],

        "vcluster": ["cluster", "image"],

        "synnefo": ["cred", "synnefo", "roles"],

        "packages": ["debian", "ganeti", "synnefo", "other"],

        "ganeti": [],

    }

    def __init__(self, confdir, cluster_name):

        self.confdir = confdir

        self.files["ganeti"] = [cluster_name]

        for f in self.files.keys():

            setattr(self, f, self.read_config(f))

    def read_config(self, f):

        config = ConfigParser.ConfigParser()

        config.optionxform = str

        filename = os.path.join(self.confdir, f) + ".conf"

        config.read(filename)

        return config

    def set(self, conf, section, option, value):

        c = getattr(self, conf)

        c.set(section, option, value)

    def get(self, conf, section, option):

        c = getattr(self, conf)

        return c.get(section, option, True)

    def get_section(self, conf, section):

        c = getattr(self, conf)

        return c.items(section, True)

    def print_config(self):

        for f in self.files.keys():

            getattr(self, f).write(sys.stdout)

    def _configure(self, args):

        for f, sections in self.files.iteritems():

            for s in sections:

                for k, v in self.get_section(f, s):

                    if getattr(args, k, None):

                        self.set(f, s, k, getattr(args, k))

    @classmethod

    def configure(cls, confdir="/etc/snf-deploy",

                  cluster_name="ganeti1", args=None, autoconf=False):

        conf = cls(confdir, cluster_name)

        if args:

            conf._configure(args)

        if autoconf:

            conf.autoconf()

        return conf

    def autoconf(self):

        #domain = get_domain()

        #if domain:

        #    self.nodes.set("network", "domain", get_domain())

        self.nodes.set("network", "subnet", "/".join(get_netinfo()))

        self.nodes.set("network", "gateway", get_default_route()[0])

        self.nodes.set("hostnames", "node1", get_hostname())

        self.nodes.set("ips", "node1", get_netinfo()[0])

        self.nodes.set("info", "nodes", "node1")

        self.nodes.set("info", "public_iface", get_default_route()[1])

def debug(host, msg):

    print HEADER + host + \

        OKBLUE + ": " + msg + ENDC

def check_pidfile(pidfile):

    print("Checking pidfile " + pidfile)

    try:

        f = open(pidfile, "r")

        pid = f.readline()

        os.kill(int(pid), signal.SIGKILL)

        f.close()

        os.remove(pidfile)

        time.sleep(5)

    except:

        pass

def randomMAC():

    mac = [0x52, 0x54, 0x56,

           random.randint(0x00, 0xff),

           random.randint(0x00, 0xff),

           random.randint(0x00, 0xff)]

    return ':'.join(map(lambda x: "%02x" % x, mac))

def create_dir(d, clean=False):

    os.system("mkdir -p " + d)

    if clean:

        try:

            os.system("rm -f %s/*" % d)

        except:

            pass

def get_netinfo():

    _, pdev = get_default_route()

    r = re.compile(".*inet (\S+)/(\S+).*")

    s = subprocess.Popen(['ip', 'addr', 'show', 'dev', pdev],

                         stdout=subprocess.PIPE)

    for line in s.stdout.readlines():

        match = r.search(line)

        if match:

            ip, size = match.groups()

            break

    return ip, size

def get_hostname():

    s = subprocess.Popen(['hostname', '-s'], stdout=subprocess.PIPE)

    return s.stdout.readline().strip()

def get_domain():

    s = subprocess.Popen(['hostname', '-d'], stdout=subprocess.PIPE)

    return s.stdout.readline().strip()

def get_default_route():

    r = re.compile("default via (\S+) dev (\S+)")

    s = subprocess.Popen(['ip', 'route'], stdout=subprocess.PIPE)

    for line in s.stdout.readlines():

        match = r.search(line)

        if match:

            gw, dev = match.groups()

            break

    return (gw, dev)

def import_conf_file(filename, directory):

    return imp.load_module(filename, *imp.find_module(filename, [directory]))

def raddr(addr):

    return list(reversed(addr.replace("/", "-").split(".")))