Haizea

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

# Copyright 2006-2008, University of Chicago                                 #

# Copyright 2008, 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    #

# not use this file except in compliance with the License. You may obtain    #

# a copy of the License at                                                   #

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

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# Unless required by applicable law or agreed to in writing, software        #

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

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #

# See the License for the specific language governing permissions and        #

# limitations under the License.                                             #

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from haizea.core.leases import Capacity

from haizea.core.scheduler.resourcepool import ResourcePoolNode

from haizea.core.enact import ResourcePoolInfo, VMEnactment, DeploymentEnactment

import haizea.common.constants as constants

from haizea.common.utils import get_config

import logging

class SimulatedResourcePoolInfo(ResourcePoolInfo):

    def __init__(self, site):

        ResourcePoolInfo.__init__(self)

        self.logger = logging.getLogger("ENACT.SIMUL.INFO")

        config = get_config()

        if not ("CPU" in site.resource_types and "Memory" in site.resource_types):

            # CPU and Memory must be specified

            # TODO: raise something more meaningful

            raise

        # Disk and network should be specified but, if not, we can

        # just add arbitrarily large values.

        if not "Disk" in site.resource_types:

            site.add_resource("Disk", [1000000])

        if not "Net-in" in site.resource_types:

            site.add_resource("Net-in", [1000000])

        if not "Net-out" in site.resource_types:

            site.add_resource("Net-out", [1000000])

        self.resource_types = site.get_resource_types()        

        nodes = site.nodes.get_all_nodes()

        self.nodes = dict([(id, ResourcePoolNode(id, "simul-%i" % id, capacity)) for (id, capacity) in nodes.items()])

        for node in self.nodes.values():

            node.enactment_info = node.id      

    def get_nodes(self):

        return self.nodes

    def get_resource_types(self):

        return self.resource_types

    def get_migration_bandwidth(self):

        return 100 # TODO: Get from config file

class SimulatedVMEnactment(VMEnactment):

    def __init__(self):

        VMEnactment.__init__(self)

        self.logger = logging.getLogger("ENACT.SIMUL.VM")

    def start(self, action):

        for vnode in action.vnodes:

            # Unpack action

            pnode = action.vnodes[vnode].pnode

            image = action.vnodes[vnode].diskimage

            cpu = 100 #action.vnodes[vnode].resources.get_by_type(constants.RES_CPU)

            memory = 1024 #action.vnodes[vnode].resources.get_by_type(constants.RES_MEM)

            self.logger.debug("Received request to start VM for L%iV%i on host %i, image=%s, cpu=%i, mem=%i"

                         % (action.lease_haizea_id, vnode, pnode, image, cpu, memory))

    def stop(self, action):

        for vnode in action.vnodes:

            self.logger.debug("Received request to stop VM for L%iV%i"

                         % (action.lease_haizea_id, vnode))

    def suspend(self, action):

        for vnode in action.vnodes:

            self.logger.debug("Received request to suspend VM for L%iV%i"

                         % (action.lease_haizea_id, vnode))

    def resume(self, action):

        for vnode in action.vnodes:

            self.logger.debug("Received request to resume VM for L%iV%i"

                         % (action.lease_haizea_id, vnode))

    def verify_suspend(self, action):

        return 0

    def verify_resume(self, action):

        return 0

class SimulatedDeploymentEnactment(DeploymentEnactment):    

    def __init__(self):

        DeploymentEnactment.__init__(self)

        self.logger = logging.getLogger("ENACT.SIMUL.INFO")

        config = get_config()

        self.bandwidth = config.get("imagetransfer-bandwidth")

        imgcapacity = Capacity([constants.RES_NETOUT])

        imgcapacity.set_quantity(constants.RES_NETOUT, self.bandwidth)

        # TODO: Determine node number based on site

        self.imagenode = ResourcePoolNode(1000, "image_node", imgcapacity)

    def get_imagenode(self):

        return self.imagenode

    def get_aux_nodes(self):

        return [self.imagenode] 

    def get_bandwidth(self):

        return self.bandwidth

    def resolve_to_file(self, lease_id, vnode, diskimage_id):

        return "/var/haizea/images/%s-L%iV%i" % (diskimage_id, lease_id, vnode)