Haizea

# -------------------------------------------------------------------------- #

# Copyright 2006-2009, University of Chicago                                 #

# Copyright 2008-2009, Distributed Systems Architecture Group, Universidad   #

# Complutense de Madrid (dsa-research.org)                                   #

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# Licensed under the Apache License, Version 2.0 (the "License"); you may    #

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# http://www.apache.org/licenses/LICENSE-2.0                                 #

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# distributed under the License is distributed on an "AS IS" BASIS,          #

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# limitations under the License.                                             #

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from haizea.core.manager import Manager

from haizea.common.utils import generate_config_name, unpickle

from haizea.core.configfile import HaizeaConfig, HaizeaMultiConfig

from haizea.common.config import ConfigException

from haizea.cli.optionparser import OptionParser, Option

from haizea.cli import Command

from mx.DateTime import TimeDelta

import xml.etree.ElementTree as ET

import haizea.common.defaults as defaults

import sys

import os

import errno

import signal

import time

class haizea(Command):

    """

    This is the main Haizea command. By default, it will start Haizea as a daemon, which

    can receive requests via RPC or interact with other components such as OpenNebula. It can

    also start as a foreground process, and write all log messages to the console. All

    Haizea options are specified through the configuration file."""

    name = "haizea"

    def __init__(self, argv):

        Command.__init__(self, argv)

        self.optparser.add_option(Option("-c", "--conf", action="store", type="string", dest="conf",

                                         help = """

                                         The location of the Haizea configuration file. If not

                                         specified, Haizea will first look for it in

                                         /etc/haizea/haizea.conf and then in ~/.haizea/haizea.conf.

                                         """))

        self.optparser.add_option(Option("-f", "--fg", action="store_true",  dest="foreground",

                                         help = """

                                         Runs Haizea in the foreground.

                                         """))

        self.optparser.add_option(Option("--stop", action="store_true",  dest="stop",

                                         help = """

                                         Stops the Haizea daemon.

                                         """))

    def run(self):

        self.parse_options()

        pidfile = defaults.DAEMON_PIDFILE # TODO: Make configurable

        if self.opt.stop == None:

            # Start Haizea

            # Check if a daemon is already running

            if os.path.exists(pidfile):

                pf  = file(pidfile,'r')

                pid = int(pf.read().strip())

                pf.close()

                try:

                    os.kill(pid, signal.SIG_DFL)

                except OSError, (err, msg):

                    if err == errno.ESRCH:

                        # Pidfile is stale. Remove it.

                        os.remove(pidfile)

                    else:

                        msg = "Unexpected error when checking pid file '%s'.\n%s\n" %(pidfile, msg)

                        sys.stderr.write(msg)

                        sys.exit(1)

                else:

                    msg = "Haizea seems to be already running (pid %i)\n" % pid

                    sys.stderr.write(msg)

                    sys.exit(1)

            try:

                configfile=self.opt.conf

                if configfile == None:

                    # Look for config file in default locations

                    for loc in defaults.CONFIG_LOCATIONS:

                        if os.path.exists(loc):

                            config = HaizeaConfig.from_file(loc)

                            break

                    else:

                        print >> sys.stdout, "No configuration file specified, and none found at default locations."

                        print >> sys.stdout, "Make sure a config file exists at:\n  -> %s" % "\n  -> ".join(defaults.CONFIG_LOCATIONS)

                        print >> sys.stdout, "Or specify a configuration file with the --conf option."

                        exit(1)

                else:

                    config = HaizeaConfig.from_file(configfile)

            except ConfigException, msg:

                print >> sys.stderr, "Error in configuration file:"

                print >> sys.stderr, msg

                exit(1)

            daemon = not self.opt.foreground

            manager = Manager(config, daemon, pidfile)

            manager.start()

        elif self.opt.stop: # Stop Haizea

            # Based on code in:  http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012

            try:

                pf  = file(pidfile,'r')

                pid = int(pf.read().strip())

                pf.close()

            except IOError:

                msg = "Could not stop, pid file '%s' missing.\n"

                sys.stderr.write(msg % pidfile)

                sys.exit(1)

            try:

               while 1:

                   os.kill(pid, signal.SIGTERM)

                   time.sleep(1)

            except OSError, err:

               err = str(err)

               if err.find("No such process") > 0:

                   os.remove(pidfile)

               else:

                   print str(err)

                   sys.exit(1)

class haizea_generate_configs(Command):

    """

    Takes an Haizea multiconfiguration file and generates the individual

    configuration files. See the Haizea manual for more details on multiconfiguration

    files."""

    name = "haizea-generate-configs"

    def __init__(self, argv):

        Command.__init__(self, argv)

        self.optparser.add_option(Option("-c", "--conf", action="store", type="string", dest="conf", required=True,

                                         help = """

                                         Multiconfiguration file.

                                         """))

        self.optparser.add_option(Option("-d", "--dir", action="store", type="string", dest="dir", required=True,

                                         help = """

                                         Directory where the individual configuration files

                                         must be created.

                                         """))

    def run(self):    

        self.parse_options()

        configfile=self.opt.conf

        multiconfig = HaizeaMultiConfig.from_file(configfile)

        dir = self.opt.dir

        configs = multiconfig.get_configs()

        etcdir = os.path.abspath(dir)    

        if not os.path.exists(etcdir):

            os.makedirs(etcdir)

        for c in configs:

            profile = c.get_attr("profile")

            tracefile = c.get("tracefile")

            injfile = c.get("injectionfile")

            configname = generate_config_name(profile, tracefile, injfile)

            configfile = etcdir + "/%s.conf" % configname

            fc = open(configfile, "w")

            c.config.write(fc)

            fc.close()

class haizea_generate_scripts(Command):

    """

    Generates a script, based on a script template, to run all the individual 

    configuration files generated by haizea-generate-configs. This command 

    requires Mako Templates for Python (http://www.makotemplates.org/)."""

    name = "haizea-generate-scripts"

    def __init__(self, argv):

        Command.__init__(self, argv)

        self.optparser.add_option(Option("-c", "--conf", action="store", type="string", dest="conf", required=True,

                                         help = """

                                         Multiconfiguration file used in haizea-generate-configs.

                                         """))

        self.optparser.add_option(Option("-d", "--confdir", action="store", type="string", dest="confdir", required=True,

                                         help = """

                                         Directory containing the individual configuration files.

                                         """))

        self.optparser.add_option(Option("-t", "--template", action="store", type="string", dest="template", required=True,

                                         help = """

                                         Script template (sample templates are included in /usr/share/haizea/etc)

                                         """))

        self.optparser.add_option(Option("-m", "--only-missing", action="store_true",  dest="onlymissing",

                                         help = """

                                         If specified, the generated script will only run the configurations

                                         that have not already produced a datafile. This is useful when some simulations

                                         fail, and you don't want to have to rerun them all.

                                         """))

    def run(self):        

        self.parse_options()

        configfile=self.opt.conf

        multiconfig = HaizeaMultiConfig.from_file(configfile)

        try:

            from mako.template import Template

        except:

            print "You need Mako Templates for Python to run this command."

            print "You can download them at http://www.makotemplates.org/"

            exit(1)

        configs = multiconfig.get_configs()

        etcdir = os.path.abspath(self.opt.confdir)    

        if not os.path.exists(etcdir):

            os.makedirs(etcdir)

        templatedata = []    

        for c in configs:

            profile = c.get_attr("profile")

            tracefile = c.get("tracefile")

            injfile = c.get("injectionfile")

            datafile = c.get("datafile")

            configname = generate_config_name(profile, tracefile, injfile)

            if not self.opt.onlymissing or not os.path.exists(datafile):

                configfile = etcdir + "/%s.conf" % configname

                templatedata.append((configname, configfile))

        template = Template(filename=self.opt.template)

        print template.render(configs=templatedata, etcdir=etcdir)

class haizea_convert_data(Command):

    """

    Converts Haizea datafiles into another (easier to process) format.

    """

    name = "haizea-convert-data"

    def __init__(self, argv):

        Command.__init__(self, argv)

        self.optparser.add_option(Option("-t", "--type", action="store",  dest="type",

                                         choices = ["per-experiment", "per-lease"],

                                         help = """

                                         Type of data to produce.

                                         """))

        self.optparser.add_option(Option("-f", "--format", action="store", type="string", dest="format",

                                         help = """

                                         Output format. Currently supported: csv

                                         """))

    def run(self):            

        self.parse_options()

        datafiles=self.args[1:]

        if len(datafiles) == 0:

            print "Please specify at least one datafile to convert"

            exit(1)

        attr_names = unpickle(datafiles[0]).attrs.keys()

        if len(attr_names) == 0:

            header = ""

        else:

            header = ",".join(attr_names) + ","

        if self.opt.type == "per-experiment":

            header += "all-best-effort"

        elif self.opt.type == "per-lease":

            header += "lease_id,waiting_time,slowdown"

        print header

        for datafile in datafiles:

            stats = unpickle(datafile)

            attrs = ",".join([stats.attrs[attr_name] for attr_name in attr_names])

            if self.opt.type == "per-experiment":

                print attrs + "," + `(stats.get_besteffort_end() - stats.starttime).seconds`

            elif self.opt.type == "per-lease":

                waitingtimes = stats.get_waiting_times()

                slowdowns = stats.get_slowdowns()

                for lease_id in waitingtimes:

                    print ",".join([attrs, `lease_id`, `waitingtimes[lease_id].seconds`, `slowdowns[lease_id]`])

class haizea_lwf2xml(Command):

    """

    Converts old Haizea LWF file into new XML-based LWF format

    """

    name = "haizea-lwf2xml"

    def __init__(self, argv):

        Command.__init__(self, argv)

        self.optparser.add_option(Option("-i", "--in", action="store",  type="string", dest="inf",

                                         help = """

                                         Input file

                                         """))

        self.optparser.add_option(Option("-o", "--out", action="store", type="string", dest="outf",

                                         help = """

                                         Output file

                                         """))

    def run(self):            

        self.parse_options()

        infile = self.opt.inf

        outfile = self.opt.outf

        root = ET.Element("lease-workload")

        root.set("name", infile)

        description = ET.SubElement(root, "description")

        time = TimeDelta(seconds=0)

        id = 1

        requests = ET.SubElement(root, "lease-requests")

        infile = open(infile, "r")

        for line in infile:

            if line[0]!='#' and len(line.strip()) != 0:

                fields = line.split()

                submit_time = int(fields[0])

                start_time = int(fields[1])

                duration = int(fields[2])

                real_duration = int(fields[3])

                num_nodes = int(fields[4])

                cpu = int(fields[5])

                mem = int(fields[6])

                disk = int(fields[7])

                vm_image = fields[8]

                vm_imagesize = int(fields[9])

                lease_request = ET.SubElement(requests, "lease-request")

                lease_request.set("arrival", str(TimeDelta(seconds=submit_time)))

                if real_duration != duration:

                    realduration = ET.SubElement(lease_request, "realduration")

                    realduration.set("time", str(TimeDelta(seconds=real_duration)))

                lease = ET.SubElement(lease_request, "lease")

                lease.set("id", `id`)

                nodes = ET.SubElement(lease, "nodes")

                node_set = ET.SubElement(nodes, "node-set")

                node_set.set("numnodes", `num_nodes`)

                res = ET.SubElement(node_set, "res")

                res.set("type", "CPU")

                if cpu == 1:

                    res.set("amount", "100")

                else:

                    pass

                res = ET.SubElement(node_set, "res")

                res.set("type", "Memory")

                res.set("amount", `mem`)

                start = ET.SubElement(lease, "start")

                if start_time == -1:

                    lease.set("preemptible", "true")

                else:

                    lease.set("preemptible", "false")

                    exact = ET.SubElement(start, "exact")

                    exact.set("time", str(TimeDelta(seconds=start_time)))

                duration_elem = ET.SubElement(lease, "duration")

                duration_elem.set("time", str(TimeDelta(seconds=duration)))

                software = ET.SubElement(lease, "software")

                diskimage = ET.SubElement(software, "disk-image")

                diskimage.set("id", vm_image)

                diskimage.set("size", `vm_imagesize`)

                id += 1

        tree = ET.ElementTree(root)

        print ET.tostring(root)

        #tree.write("page.xhtml")

#head = ET.SubElement(root, "head")

#title = ET.SubElement(head, "title")

#title.text = "Page Title"

#body = ET.SubElement(root, "body")

#body.set("bgcolor", "#ffffff")

#body.text = "Hello, World!"

# wrap it in an ElementTree instance, and save as XML

#tree = ET.ElementTree(root)