Example #1
0
 def __init__(self, name=None, image=None, model=None):
     BaseModel.__init__(self)
     self.readiness_probe = None
     self.liveness_probe = None
     if model is not None:
         assert isinstance(model, dict)
         self.model = model
         if 'status' in self.model.keys():
             self.model.pop('status', None)
         if 'livenessProbe' in self.model.keys():
             self.liveness_probe = Probe(model=self.model['livenessProbe'])
         if 'readinessProbe' in self.model.keys():
             self.readiness_probe = Probe(model=self.model['readinessProbe'])
         if 'privileged' not in self.model.keys():
             self.model['privileged'] = False
         if 'hostNetwork' not in self.model.keys():
             self.model['hostNetwork'] = False
     else:
         if name is None or image is None:
             raise SyntaxError("name: [ {0} ] and image: [ {1} ] cannot be None.".format(name, image))
         self.model = {
             "name": name,
             "image": image,
             "imagePullPolicy": 'IfNotPresent',
             "privileged": False,
             "hostNetwork": False,
             "terminationMessagePath": "/dev/termination-log",
             "resources": {
                 "requests": {
                     "cpu": "100m",
                     "memory": "32M"
                 }
             }
         }
 def add_liveness_probe(self, **kwargs):
     if not isinstance(kwargs, dict):
         raise SyntaxError(
             'K8sContainer: could not add liveness_probe: [ {} ]'.format(
                 kwargs))
     probe = Probe(kwargs)
     self.liveness_probe = probe
Example #3
0
 def _build_with_model(self, model=None):
     if 'args' in model:
         self.args = model['args']
     if 'command' in model:
         self.command = model['command']
     if 'env' in model:
         envs = []
         for e in model['env']:
             env = EnvVar(e)
             envs.append(env)
         self.env = envs
     if 'image' in model:
         self.image = model['image']
     if 'imagePullPolicy' in model:
         self.image_pull_policy = model['imagePullPolicy']
     if 'livenessProbe' in model:
         self.liveness_probe = Probe(model['livenessProbe'])
     if 'name' in model:
         self.name = model['name']
     if 'ports' in model:
         ports = []
         for p in model['ports']:
             port = ContainerPort(p)
             ports.append(port)
         self.ports = ports
     if 'readinessProbe' in model:
         self.readiness_probe = Probe(model['readinessProbe'])
     if 'resources' in model:
         r = ResourceRequirements(model['resources'])
         self.resources = r
     if 'securityContext' in model:
         self.security_context = SecurityContext(model['securityContext'])
     if 'terminationMessagePath' in model:
         self.termination_message_path = model['terminationMessagePath']
     if 'volumeMounts' in model:
         mounts = []
         for v in model['volumeMounts']:
             mount = VolumeMount(v)
             mounts.append(mount)
         self.volume_mounts = mounts
     if 'workingDir' in model:
         self.working_dir = model['workingDir']
Example #4
0
 def _build_with_model(self, model=None):
     if 'args' in model:
         self.args = model['args']
     if 'command' in model:
         self.command = model['command']
     if 'env' in model:
         envs = []
         for e in model['env']:
             env = EnvVar(e)
             envs.append(env)
         self.env = envs
     if 'image' in model:
         self.image = model['image']
     if 'imagePullPolicy' in model:
         self.image_pull_policy = model['imagePullPolicy']
     if 'livenessProbe' in model:
         self.liveness_probe = Probe(model['livenessProbe'])
     if 'name' in model:
         self.name = model['name']
     if 'ports' in model:
         ports = []
         for p in model['ports']:
             port = ContainerPort(p)
             ports.append(port)
         self.ports = ports
     if 'readinessProbe' in model:
         self.readiness_probe = Probe(model['readinessProbe'])
     if 'resources' in model:
         r = ResourceRequirements(model['resources'])
         self.resources = r
     if 'securityContext' in model:
         self.security_context = SecurityContext(model['securityContext'])
     if 'terminationMessagePath' in model:
         self.termination_message_path = model['terminationMessagePath']
     if 'volumeMounts' in model:
         mounts = []
         for v in model['volumeMounts']:
             mount = VolumeMount(v)
             mounts.append(mount)
         self.volume_mounts = mounts
     if 'workingDir' in model:
         self.working_dir = model['workingDir']
Example #5
0
class Container(object):
    """
    http://kubernetes.io/docs/api-reference/v1/definitions/#_v1_container
    """

    VALID_PULL_POLICIES = ['Always', 'Never', 'IfNotPresent']

    def __init__(self, model=None):
        super(Container, self).__init__()

        self._args = None
        self._command = None
        self._env = []
        self._image = None
        self._image_pull_policy = 'IfNotPresent'
        self._liveness_probe = None
        self._name = None
        self._ports = None
        self._readiness_probe = None
        self._resources = ResourceRequirements()
        self._security_context = SecurityContext()
        self._volume_mounts = []
        self._working_dir = None

        self.resources.requests = {
            'cpu': '100m',
            'memory': '32M'
        }

        if model is not None:
            m = filter_model(model)
            self._build_with_model(m)

    def __eq__(self, other):
        # see https://github.com/kubernetes/kubernetes/blob/release-1.3/docs/design/identifiers.md
        if isinstance(other, self.__class__):
            # Uniquely name (via a name) an object across space.
            return self.name == other.name
        return NotImplemented

    def _build_with_model(self, model=None):
        if 'args' in model:
            self.args = model['args']
        if 'command' in model:
            self.command = model['command']
        if 'env' in model:
            envs = []
            for e in model['env']:
                env = EnvVar(e)
                envs.append(env)
            self.env = envs
        if 'image' in model:
            self.image = model['image']
        if 'imagePullPolicy' in model:
            self.image_pull_policy = model['imagePullPolicy']
        if 'livenessProbe' in model:
            self.liveness_probe = Probe(model['livenessProbe'])
        if 'name' in model:
            self.name = model['name']
        if 'ports' in model:
            ports = []
            for p in model['ports']:
                port = ContainerPort(p)
                ports.append(port)
            self.ports = ports
        if 'readinessProbe' in model:
            self.readiness_probe = Probe(model['readinessProbe'])
        if 'resources' in model:
            r = ResourceRequirements(model['resources'])
            self.resources = r
        if 'securityContext' in model:
            self.security_context = SecurityContext(model['securityContext'])
        if 'terminationMessagePath' in model:
            self.termination_message_path = model['terminationMessagePath']
        if 'volumeMounts' in model:
            mounts = []
            for v in model['volumeMounts']:
                mount = VolumeMount(v)
                mounts.append(mount)
            self.volume_mounts = mounts
        if 'workingDir' in model:
            self.working_dir = model['workingDir']

    # ------------------------------------------------------------------------------------- args

    @property
    def args(self):
        return self._args

    @args.setter
    def args(self, args=None):
        if not is_valid_list(args, str):
            raise SyntaxError('Container: args: [ {0} ] is invalid.'.format(args))
        self._args = args

    # ------------------------------------------------------------------------------------- command

    @property
    def command(self):
        return self._command

    @command.setter
    def command(self, command=None):
        if not is_valid_list(command, str):
            raise SyntaxError('Container: command: [ {0} ] is invalid.'.format(command))
        self._command = command

    # ------------------------------------------------------------------------------------- env

    @property
    def env(self):
        return self._env

    @env.setter
    def env(self, env=None):
        if not is_valid_list(env, EnvVar):
            raise SyntaxError("Container: env: [ {0} ] is invalid.".format(env))
        self._env = env

    # ------------------------------------------------------------------------------------- image

    @property
    def image(self):
        return self._image

    @image.setter
    def image(self, image=None):
        if not is_valid_string(image):
            raise SyntaxError('Container: image: [ {0} ] is invalid.'.format(image))
        self._image = image

    # ------------------------------------------------------------------------------------- image pull policy

    @property
    def image_pull_policy(self):
        return self._image_pull_policy

    @image_pull_policy.setter
    def image_pull_policy(self, policy=None):
        if policy not in Container.VALID_PULL_POLICIES:
            raise SyntaxError('Container: image_pull_policy: [ {0} ] is invalid.'.format(policy))
        self._image_pull_policy = policy

    # ------------------------------------------------------------------------------------- liveness probe

    @property
    def liveness_probe(self):
        return self._liveness_probe

    @liveness_probe.setter
    def liveness_probe(self, probe=None):
        if not isinstance(probe, Probe):
            raise SyntaxError('Container: liveness_probe: [ {0} ] is invalid.'.format(probe))
        self._liveness_probe = probe

    # ------------------------------------------------------------------------------------- name

    @property
    def name(self):
        return self._name

    @name.setter
    def name(self, name=None):
        if not is_valid_string(name):
            raise SyntaxError('Container: name: [ {0} ] is invalid.'.format(name))
        self._name = name

    # ------------------------------------------------------------------------------------- ports

    @property
    def ports(self):
        return self._ports

    @ports.setter
    def ports(self, ports=None):
        if not is_valid_list(ports, ContainerPort):
            raise SyntaxError('Container: ports: [ {0} ] is invalid.'.format(ports))
        self._ports = ports

    # ------------------------------------------------------------------------------------- readiness probe

    @property
    def readiness_probe(self):
        return self._readiness_probe

    @readiness_probe.setter
    def readiness_probe(self, probe=None):
        if not isinstance(probe, Probe):
            raise SyntaxError('Container: readiness_probe: [ {0} ] is invalid.'.format(probe))
        self._readiness_probe = probe

    # ------------------------------------------------------------------------------------- resource requirements

    @property
    def resources(self):
        return self._resources

    @resources.setter
    def resources(self, resources=None):
        if not isinstance(resources, ResourceRequirements):
            raise SyntaxError('Container: resources: [ {0} ] is invalid.'.format(resources))
        self._resources = resources

    # ------------------------------------------------------------------------------------- security context

    @property
    def security_context(self):
        return self._security_context

    @security_context.setter
    def security_context(self, context=None):
        if not isinstance(context, SecurityContext):
            raise SyntaxError('Container: security_context: [ {0} ] is invalid.'.format(context))
        self._security_context = context

    # ------------------------------------------------------------------------------------- volume mounts

    @property
    def volume_mounts(self):
        return self._volume_mounts

    @volume_mounts.setter
    def volume_mounts(self, mounts=None):
        if not is_valid_list(mounts, VolumeMount):
            raise SyntaxError('Container: volume_mounts: [ {0} ] is invalid.'.format(mounts))
        self._volume_mounts = mounts

    # ------------------------------------------------------------------------------------- working dir
    @property
    def working_dir(self):
        return self._working_dir

    @working_dir.setter
    def working_dir(self, wdir=None):
        if not is_valid_string(wdir):
            raise SyntaxError('Container: working_dir: [ {0} ] is invalid.'.format(wdir))
        self._working_dir = wdir

    # ------------------------------------------------------------------------------------- serialize

    def serialize(self):
        data = {}
        if self.args is not None:
            data['args'] = self.args
        if self.command is not None:
            data['command'] = self.command
        if self.env is not None:
            data['env'] = [x.serialize() for x in self.env]
        if self.image is not None:
            data['image'] = self.image
        if self.image_pull_policy is not None:
            data['imagePullPolicy'] = self.image_pull_policy
        if self.liveness_probe is not None:
            data['livenessProbe'] = self.liveness_probe.serialize()
        if self.name is not None:
            data['name'] = self.name
        if self.ports is not None:
            data['ports'] = [x.serialize() for x in self.ports]
        if self.resources is not None:
            data['resources'] = self.resources.serialize()
        if self.readiness_probe is not None:
            data['readinessProbe'] = self.readiness_probe.serialize()
        if self.security_context is not None:
            data['securityContext'] = self.security_context.serialize()
        if self.volume_mounts is not None:
            data['volumeMounts'] = [x.serialize() for x in self.volume_mounts]
        if self.working_dir is not None:
            data['workingDir'] = self.working_dir
        return data
Example #6
0
class Container(object):
    """
    http://kubernetes.io/docs/api-reference/v1/definitions/#_v1_container
    """

    VALID_PULL_POLICIES = ['Always', 'Never', 'IfNotPresent']

    def __init__(self, model=None):
        super(Container, self).__init__()

        self._args = None
        self._command = None
        self._env = []
        self._image = None
        self._image_pull_policy = 'IfNotPresent'
        self._liveness_probe = None
        self._name = None
        self._ports = None
        self._readiness_probe = None
        self._resources = ResourceRequirements()
        self._security_context = SecurityContext()
        self._volume_mounts = []
        self._working_dir = None

        self.resources.requests = {'cpu': '100m', 'memory': '32M'}

        if model is not None:
            m = filter_model(model)
            self._build_with_model(m)

    def __eq__(self, other):
        # see https://github.com/kubernetes/kubernetes/blob/release-1.3/docs/design/identifiers.md
        if isinstance(other, self.__class__):
            # Uniquely name (via a name) an object across space.
            return self.name == other.name
        return NotImplemented

    def _build_with_model(self, model=None):
        if 'args' in model:
            self.args = model['args']
        if 'command' in model:
            self.command = model['command']
        if 'env' in model:
            envs = []
            for e in model['env']:
                env = EnvVar(e)
                envs.append(env)
            self.env = envs
        if 'image' in model:
            self.image = model['image']
        if 'imagePullPolicy' in model:
            self.image_pull_policy = model['imagePullPolicy']
        if 'livenessProbe' in model:
            self.liveness_probe = Probe(model['livenessProbe'])
        if 'name' in model:
            self.name = model['name']
        if 'ports' in model:
            ports = []
            for p in model['ports']:
                port = ContainerPort(p)
                ports.append(port)
            self.ports = ports
        if 'readinessProbe' in model:
            self.readiness_probe = Probe(model['readinessProbe'])
        if 'resources' in model:
            r = ResourceRequirements(model['resources'])
            self.resources = r
        if 'securityContext' in model:
            self.security_context = SecurityContext(model['securityContext'])
        if 'terminationMessagePath' in model:
            self.termination_message_path = model['terminationMessagePath']
        if 'volumeMounts' in model:
            mounts = []
            for v in model['volumeMounts']:
                mount = VolumeMount(v)
                mounts.append(mount)
            self.volume_mounts = mounts
        if 'workingDir' in model:
            self.working_dir = model['workingDir']

    # ------------------------------------------------------------------------------------- args

    @property
    def args(self):
        return self._args

    @args.setter
    def args(self, args=None):
        if not is_valid_list(args, str):
            raise SyntaxError(
                'Container: args: [ {0} ] is invalid.'.format(args))
        self._args = args

    # ------------------------------------------------------------------------------------- command

    @property
    def command(self):
        return self._command

    @command.setter
    def command(self, command=None):
        if not is_valid_list(command, str):
            raise SyntaxError(
                'Container: command: [ {0} ] is invalid.'.format(command))
        self._command = command

    # ------------------------------------------------------------------------------------- env

    @property
    def env(self):
        return self._env

    @env.setter
    def env(self, env=None):
        if not is_valid_list(env, EnvVar):
            raise SyntaxError(
                "Container: env: [ {0} ] is invalid.".format(env))
        self._env = env

    # ------------------------------------------------------------------------------------- image

    @property
    def image(self):
        return self._image

    @image.setter
    def image(self, image=None):
        if not is_valid_string(image):
            raise SyntaxError(
                'Container: image: [ {0} ] is invalid.'.format(image))
        self._image = image

    # ------------------------------------------------------------------------------------- image pull policy

    @property
    def image_pull_policy(self):
        return self._image_pull_policy

    @image_pull_policy.setter
    def image_pull_policy(self, policy=None):
        if policy not in Container.VALID_PULL_POLICIES:
            raise SyntaxError(
                'Container: image_pull_policy: [ {0} ] is invalid.'.format(
                    policy))
        self._image_pull_policy = policy

    # ------------------------------------------------------------------------------------- liveness probe

    @property
    def liveness_probe(self):
        return self._liveness_probe

    @liveness_probe.setter
    def liveness_probe(self, probe=None):
        if not isinstance(probe, Probe):
            raise SyntaxError(
                'Container: liveness_probe: [ {0} ] is invalid.'.format(probe))
        self._liveness_probe = probe

    # ------------------------------------------------------------------------------------- name

    @property
    def name(self):
        return self._name

    @name.setter
    def name(self, name=None):
        if not is_valid_string(name):
            raise SyntaxError(
                'Container: name: [ {0} ] is invalid.'.format(name))
        self._name = name

    # ------------------------------------------------------------------------------------- ports

    @property
    def ports(self):
        return self._ports

    @ports.setter
    def ports(self, ports=None):
        if not is_valid_list(ports, ContainerPort):
            raise SyntaxError(
                'Container: ports: [ {0} ] is invalid.'.format(ports))
        self._ports = ports

    # ------------------------------------------------------------------------------------- readiness probe

    @property
    def readiness_probe(self):
        return self._readiness_probe

    @readiness_probe.setter
    def readiness_probe(self, probe=None):
        if not isinstance(probe, Probe):
            raise SyntaxError(
                'Container: readiness_probe: [ {0} ] is invalid.'.format(
                    probe))
        self._readiness_probe = probe

    # ------------------------------------------------------------------------------------- resource requirements

    @property
    def resources(self):
        return self._resources

    @resources.setter
    def resources(self, resources=None):
        if not isinstance(resources, ResourceRequirements):
            raise SyntaxError(
                'Container: resources: [ {0} ] is invalid.'.format(resources))
        self._resources = resources

    # ------------------------------------------------------------------------------------- security context

    @property
    def security_context(self):
        return self._security_context

    @security_context.setter
    def security_context(self, context=None):
        if not isinstance(context, SecurityContext):
            raise SyntaxError(
                'Container: security_context: [ {0} ] is invalid.'.format(
                    context))
        self._security_context = context

    # ------------------------------------------------------------------------------------- volume mounts

    @property
    def volume_mounts(self):
        return self._volume_mounts

    @volume_mounts.setter
    def volume_mounts(self, mounts=None):
        if not is_valid_list(mounts, VolumeMount):
            raise SyntaxError(
                'Container: volume_mounts: [ {0} ] is invalid.'.format(mounts))
        self._volume_mounts = mounts

    # ------------------------------------------------------------------------------------- working dir
    @property
    def working_dir(self):
        return self._working_dir

    @working_dir.setter
    def working_dir(self, wdir=None):
        if not is_valid_string(wdir):
            raise SyntaxError(
                'Container: working_dir: [ {0} ] is invalid.'.format(wdir))
        self._working_dir = wdir

    # ------------------------------------------------------------------------------------- serialize

    def serialize(self):
        data = {}
        if self.args is not None:
            data['args'] = self.args
        if self.command is not None:
            data['command'] = self.command
        if self.env is not None:
            data['env'] = [x.serialize() for x in self.env]
        if self.image is not None:
            data['image'] = self.image
        if self.image_pull_policy is not None:
            data['imagePullPolicy'] = self.image_pull_policy
        if self.liveness_probe is not None:
            data['livenessProbe'] = self.liveness_probe.serialize()
        if self.name is not None:
            data['name'] = self.name
        if self.ports is not None:
            data['ports'] = [x.serialize() for x in self.ports]
        if self.resources is not None:
            data['resources'] = self.resources.serialize()
        if self.readiness_probe is not None:
            data['readinessProbe'] = self.readiness_probe.serialize()
        if self.security_context is not None:
            data['securityContext'] = self.security_context.serialize()
        if self.volume_mounts is not None:
            data['volumeMounts'] = [x.serialize() for x in self.volume_mounts]
        if self.working_dir is not None:
            data['workingDir'] = self.working_dir
        return data
Example #7
0
 def set_readiness_probe(self, **kwargs):
     self.readiness_probe = Probe(**kwargs)
     return self
Example #8
0
 def set_liveness_probe(self, **kwargs):
     self.liveness_probe = Probe(**kwargs)
     return self
Example #9
0
class Container(BaseModel):
    def __init__(self, name=None, image=None, model=None):
        BaseModel.__init__(self)
        self.readiness_probe = None
        self.liveness_probe = None
        if model is not None:
            assert isinstance(model, dict)
            self.model = model
            if 'status' in self.model.keys():
                self.model.pop('status', None)
            if 'livenessProbe' in self.model.keys():
                self.liveness_probe = Probe(model=self.model['livenessProbe'])
            if 'readinessProbe' in self.model.keys():
                self.readiness_probe = Probe(model=self.model['readinessProbe'])
            if 'privileged' not in self.model.keys():
                self.model['privileged'] = False
            if 'hostNetwork' not in self.model.keys():
                self.model['hostNetwork'] = False
        else:
            if name is None or image is None:
                raise SyntaxError("name: [ {0} ] and image: [ {1} ] cannot be None.".format(name, image))
            self.model = {
                "name": name,
                "image": image,
                "imagePullPolicy": 'IfNotPresent',
                "privileged": False,
                "hostNetwork": False,
                "terminationMessagePath": "/dev/termination-log",
                "resources": {
                    "requests": {
                        "cpu": "100m",
                        "memory": "32M"
                    }
                }
            }

    def _update_model(self):
        if self.liveness_probe is not None:
            self.model['livenessProbe'] = self.liveness_probe.get()
        if self.readiness_probe is not None:
            self.model['readinessProbe'] = self.readiness_probe.get()
        return self

    def add_port(self, container_port, host_port=None, protocol=None, name=None, host_ip=None):
        portdef = dict()
        if 0 < container_port < 65536:
            portdef['containerPort'] = int(container_port)
            if name is not None:
                portdef['name'] = name
            if host_port is not None and (0 < host_port < 65536):
                portdef['hostPort'] = int(host_port)
            if host_ip is not None:
                portdef['hostIP'] = host_ip
            if protocol is not None and protocol in ['TCP', 'UDP']:
                portdef['protocol'] = protocol
            # Now assign the newly defined port.
            if 'ports' not in self.model.keys():
                self.model['ports'] = []
            self.model['ports'].append(portdef)
        else:
            raise SyntaxError('container_port should be: 0 < container_port < 65536.')
        return self

    def add_env(self, name=None, value=None):
        if name is None or value is None:
            raise SyntaxError('name and value should be strings.')
        else:
            if 'env' not in self.model.keys():
                self.model['env'] = []
            self.model['env'].append({"name": name, "value": value})
        return self

    def add_volume_mount(self, volume=None):
        if not isinstance(volume, K8sVolume):
            raise SyntaxError('Container: volume: [ {0} ] must be a K8sVolume.'.format(volume.__class__.__name__))
        vol = volume.model.model['volumeMount']
        if 'volumeMounts' not in self.model:
            self.model['volumeMounts'] = []
        self.model['volumeMounts'].append(vol)
        return self

    def get_liveness_probe(self):
        return self.liveness_probe

    def get_name(self):
        return self.model['name']

    def get_image(self):
        return self.model['image']

    def get_readiness_probe(self):
        return self.readiness_probe

    def set_arguments(self, args=None):
        if args is None:
            args = []
        else:
            if not isinstance(args, list):
                raise SyntaxError('args should be a list.')
        if 'args' not in self.model.keys():
            self.model['args'] = []
        self.model['args'] = args
        return self

    def set_command(self, cmd=None):
        if cmd is None:
            cmd = []
        else:
            if not isinstance(cmd, list):
                raise SyntaxError('cmd should be a list.')
        if 'command' not in self.model.keys():
            self.model['command'] = []
        self.model['command'] = cmd
        return self

    def set_host_network(self, mode=True):
        if not isinstance(mode, bool):
            raise SyntaxError('mode should be True or False')
        self.model['hostNetwork'] = mode
        return self

    def set_image(self, image=None):
        self.model['image'] = image
        return self

    def set_liveness_probe(self, **kwargs):
        self.liveness_probe = Probe(**kwargs)
        return self

    def set_name(self, name=None):
        if name is None:
            raise SyntaxError('name should be a string.')
        else:
            self.model['name'] = name
        return self

    def set_pull_policy(self, policy='IfNotPresent'):
        if not isinstance(policy, str):
            raise SyntaxError('Policy should be one of: Always, Never, IfNotPresent')
        if policy in ['Always', 'Never', 'IfNotPresent']:
            self.model['imagePullPolicy'] = policy
        else:
            raise SyntaxError
        return self

    def set_privileged(self, mode=True):
        if not isinstance(mode, bool):
            raise SyntaxError('mode should be True or False')
        self.model['privileged'] = mode
        return self

    def set_readiness_probe(self, **kwargs):
        self.readiness_probe = Probe(**kwargs)
        return self

    def set_requested_resources(self, cpu='100m', mem='32M'):
        if not isinstance(cpu, str) or not isinstance(mem, str):
            raise SyntaxError('cpu should be a string like 100m for 0.1 CPU and mem should be a string like 32M, 1G')
        self.model['resources']['requests']['cpu'] = cpu
        self.model['resources']['requests']['memory'] = mem
        return self

    def set_limit_resources(self, cpu='100m', mem='32M'):
        if not isinstance(cpu, str) or not isinstance(mem, str):
            raise SyntaxError('cpu should be a string like 100m for 0.1 CPU and mem should be a string like 32M, 1G')
        assert isinstance(self.model['resources'], dict)
        if 'limits' not in self.model['resources'].keys():
            self.model['resources']['limits'] = dict()
        self.model['resources']['limits']['cpu'] = cpu
        self.model['resources']['limits']['memory'] = mem
        return self