Exemplo n.º 1
0
    def _get_floating_ip_pool_name(self, request, pool_id):
        pools = [
            pool for pool in network.floating_ip_pools_list(request)
            if pool.id == pool_id
        ]

        return pools[0].name if pools else pool_id
Exemplo n.º 2
0
    def get_floating_ips_data(self):
        try:
            floating_ips = network.tenant_floating_ip_list(self.request)
        except Exception:
            floating_ips = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP addresses.'))

        try:
            floating_ip_pools = network.floating_ip_pools_list(self.request)
        except Exception:
            floating_ip_pools = []
            messages.warning(self.request,
                             _('Unable to retrieve floating IP pools.'))
        pool_dict = dict([(obj.id, obj.name) for obj in floating_ip_pools])

        instances = []
        try:
            instances, has_more = nova.server_list(self.request)
        except Exception:
            exceptions.handle(self.request,
                        _('Unable to retrieve instance list.'))

        instances_dict = dict([(obj.id, obj) for obj in instances])

        for ip in floating_ips:
            ip.instance_name = instances_dict[ip.instance_id].name \
                if ip.instance_id in instances_dict else None
            ip.pool_name = pool_dict.get(ip.pool, ip.pool)

        return floating_ips
Exemplo n.º 3
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    def get_floating_ips_data(self):
        try:
            floating_ips = network.tenant_floating_ip_list(self.request)
        except:
            floating_ips = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP addresses.'))

        try:
            floating_ip_pools = network.floating_ip_pools_list(self.request)
        except:
            floating_ip_pools = []
            messages.warning(self.request,
                             _('Unable to retrieve floating IP pools.'))
        pool_dict = dict([(obj.id, obj.name) for obj in floating_ip_pools])

        instances = []
        try:
            instances, has_more = nova.server_list(self.request,
                                                   all_tenants=True)
        except:
            exceptions.handle(self.request,
                        _('Unable to retrieve instance list.'))

        instances_dict = dict([(obj.id, obj) for obj in instances])

        for ip in floating_ips:
            ip.instance_name = instances_dict[ip.instance_id].name \
                if ip.instance_id in instances_dict else None
            ip.pool_name = pool_dict.get(ip.pool, ip.pool)

        return floating_ips
Exemplo n.º 4
0
    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))
        process_choices = []
        try:
            version_details = saharaclient.plugin_get_version_details(
                request, plugin, hadoop_version)
            for service, processes in version_details.node_processes.items():
                for process in processes:
                    process_choices.append(
                        (str(service) + ":" + str(process), process))
        except Exception:
            exceptions.handle(request,
                              _("Unable to generate process choices."))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["autogroup"] = forms.BooleanField(
            label=_("Auto Security Group"),
            widget=forms.CheckboxInput(),
            help_text=_("Create security group for this Node Group."),
            required=False)

        groups = network.security_group_list(request)
        security_group_list = [(sg.id, sg.name) for sg in groups]
        self.fields["groups"] = forms.MultipleChoiceField(
            label=_("Security Groups"),
            widget=forms.CheckboxSelectMultiple(),
            help_text=_("Launch instances in these security groups."),
            choices=security_group_list,
            required=False)

        self.fields["processes"] = forms.MultipleChoiceField(
            label=_("Processes"),
            widget=forms.CheckboxSelectMultiple(),
            help_text=_("Processes to be launched in node group"),
            choices=process_choices)

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(), initial=plugin)
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(), initial=hadoop_version)

        node_parameters = hlps.get_general_node_group_configs(
            plugin, hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)
Exemplo n.º 5
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))
        process_choices = []
        try:
            version_details = saharaclient.plugin_get_version_details(
                request, plugin, hadoop_version)
            for service, processes in version_details.node_processes.items():
                for process in processes:
                    process_choices.append(
                        (str(service) + ":" + str(process), process))
        except Exception:
            exceptions.handle(request,
                              _("Unable to generate process choices."))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["proxygateway"] = forms.BooleanField(
            label=_("Proxy Gateway"),
            widget=forms.CheckboxInput(),
            help_text=_("Sahara will use instances of this node group to "
                        "access other cluster instances."),
            required=False)

        self.fields["processes"] = forms.MultipleChoiceField(
            label=_("Processes"),
            widget=forms.CheckboxSelectMultiple(),
            help_text=_("Processes to be launched in node group"),
            choices=process_choices)

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(), initial=plugin)
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(), initial=hadoop_version)

        node_parameters = hlps.get_general_node_group_configs(
            plugin, hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)

        if "guide_template_type" in request.resolver_match.kwargs:
            self.fields["guide_template_type"] = forms.CharField(
                required=False,
                widget=forms.HiddenInput(),
                initial=request.resolver_match.kwargs["guide_template_type"])
Exemplo n.º 6
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        sahara = saharaclient.client(request)
        hlps = helpers.Helpers(sahara)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))
        process_choices = []
        try:
            version_details = saharaclient.plugin_get_version_details(request,
                                                            plugin,
                                                            hadoop_version)
            for service, processes in version_details.node_processes.items():
                for process in processes:
                    process_choices.append(
                        (str(service) + ":" + str(process), process))
        except Exception:
            exceptions.handle(request,
                              _("Unable to generate process choices."))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP pool"),
                choices=pool_choices,
                required=False)

        self.fields["processes"] = forms.MultipleChoiceField(
            label=_("Processes"),
            widget=forms.CheckboxSelectMultiple(),
            help_text=_("Processes to be launched in node group"),
            choices=process_choices)

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=plugin
        )
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=hadoop_version
        )

        node_parameters = hlps.get_general_node_group_configs(plugin,
                                                              hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)
Exemplo n.º 7
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["proxygateway"] = forms.BooleanField(
            label=_("Proxy Gateway"),
            widget=forms.CheckboxInput(),
            help_text=_("Sahara will use instances of this node group to "
                        "access other cluster instances."),
            required=False)

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=plugin
        )
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=hadoop_version
        )

        node_parameters = hlps.get_general_node_group_configs(plugin,
                                                              hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)

        if request.REQUEST.get("guide_template_type"):
            self.fields["guide_template_type"] = forms.CharField(
                required=False,
                widget=forms.HiddenInput(),
                initial=request.REQUEST.get("guide_template_type"))

        volume_types = cinder.volume_type_list(request)
        self.fields['volume_type'].choices = [(None, _("No volume type"))] + \
                                             [(type.name, type.name)
                                              for type in volume_types]
Exemplo n.º 8
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    def get_floating_ips_data(self):
        try:
            floating_ips = network.tenant_floating_ip_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ips = []
            exceptions.handle(self.request)
        except Exception:
            floating_ips = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP addresses.'))

        try:
            floating_ip_pools = network.floating_ip_pools_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ip_pools = []
            exceptions.handle(self.request)
        except Exception:
            floating_ip_pools = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP pools.'))
        pool_dict = dict([(obj.id, obj.name) for obj in floating_ip_pools])

        attached_instance_ids = [
            ip.instance_id for ip in floating_ips if ip.instance_id is not None
        ]
        if attached_instance_ids:
            instances = []
            try:
                # TODO(tsufiev): we should pass attached_instance_ids to
                # nova.server_list as soon as Nova API allows for this
                instances, has_more = nova.server_list(self.request)
            except Exception:
                exceptions.handle(self.request,
                                  _('Unable to retrieve instance list.'))

            instances_dict = dict([(obj.id, obj.name) for obj in instances])

            for ip in floating_ips:
                ip.instance_name = instances_dict.get(ip.instance_id)
                ip.pool_name = pool_dict.get(ip.pool, ip.pool)

        return floating_ips
Exemplo n.º 9
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    def get_floating_ips_data(self):
        try:
            floating_ips = network.tenant_floating_ip_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ips = []
            exceptions.handle(self.request)
        except Exception:
            floating_ips = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP addresses.'))

        try:
            floating_ip_pools = network.floating_ip_pools_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ip_pools = []
            exceptions.handle(self.request)
        except Exception:
            floating_ip_pools = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP pools.'))
        pool_dict = dict([(obj.id, obj.name) for obj in floating_ip_pools])

        attached_instance_ids = [ip.instance_id for ip in floating_ips
                                 if ip.instance_id is not None]
        if attached_instance_ids:
            instances = []
            try:
                # TODO(tsufiev): we should pass attached_instance_ids to
                # nova.server_list as soon as Nova API allows for this
                instances, has_more = nova.server_list(self.request)
            except Exception:
                exceptions.handle(self.request,
                                  _('Unable to retrieve instance list.'))

            instances_dict = dict([(obj.id, obj.name) for obj in instances])

            for ip in floating_ips:
                ip.instance_name = instances_dict.get(ip.instance_id)
                ip.pool_name = pool_dict.get(ip.pool, ip.pool)

        return floating_ips
Exemplo n.º 10
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    def get_floating_ips_data(self):
        try:
            floating_ips = network.tenant_floating_ip_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ips = []
            exceptions.handle(self.request)
        except Exception:
            floating_ips = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP addresses.'))

        try:
            floating_ip_pools = network.floating_ip_pools_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ip_pools = []
            exceptions.handle(self.request)
        except Exception:
            floating_ip_pools = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP pools.'))
        pool_dict = dict([(obj.id, obj.name) for obj in floating_ip_pools])

        instances = []
        try:
            instances, has_more = nova.server_list(self.request)
        except Exception:
            exceptions.handle(self.request,
                              _('Unable to retrieve instance list.'))

        instances_dict = dict([(obj.id, obj.name) for obj in instances])

        for ip in floating_ips:
            ip.instance_name = instances_dict.get(ip.instance_id)
            ip.pool_name = pool_dict.get(ip.pool, ip.pool)

        return floating_ips
Exemplo n.º 11
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    def get_floating_ips_data(self):
        try:
            floating_ips = network.tenant_floating_ip_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ips = []
            exceptions.handle(self.request)
        except Exception:
            floating_ips = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP addresses.'))

        try:
            floating_ip_pools = network.floating_ip_pools_list(self.request)
        except neutron_exc.ConnectionFailed:
            floating_ip_pools = []
            exceptions.handle(self.request)
        except Exception:
            floating_ip_pools = []
            exceptions.handle(self.request,
                              _('Unable to retrieve floating IP pools.'))
        pool_dict = dict([(obj.id, obj.name) for obj in floating_ip_pools])

        instances = []
        try:
            instances, has_more = nova.server_list(self.request)
        except Exception:
            exceptions.handle(self.request,
                              _('Unable to retrieve instance list.'))

        instances_dict = dict([(obj.id, obj.name) for obj in instances])

        for ip in floating_ips:
            ip.instance_name = instances_dict.get(ip.instance_id)
            ip.pool_name = pool_dict.get(ip.pool, ip.pool)

        return floating_ips
Exemplo n.º 12
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    def _get_floating_ip_pool_name(self, request, pool_id):
        pools = [pool for pool in network.floating_ip_pools_list(
            request) if pool.id == pool_id]

        return pools[0].name if pools else pool_id
Exemplo n.º 13
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["use_autoconfig"] = forms.BooleanField(
            label=_("Auto-configure"),
            help_text=_("If selected, instances of a node group will be "
                        "automatically configured during cluster "
                        "creation. Otherwise you should manually specify "
                        "configuration values."),
            required=False,
            widget=forms.CheckboxInput(),
            initial=True,
        )

        self.fields["proxygateway"] = forms.BooleanField(
            label=_("Proxy Gateway"),
            widget=forms.CheckboxInput(),
            help_text=_("Sahara will use instances of this node group to "
                        "access other cluster instances."),
            required=False)

        self.fields['is_public'] = acl_utils.get_is_public_form(
            _("node group template"))
        self.fields['is_protected'] = acl_utils.get_is_protected_form(
            _("node group template"))

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=plugin
        )
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=hadoop_version
        )
        node_parameters = hlps.get_general_node_group_configs(plugin,
                                                              hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)

        # when we copy or edit a node group template then
        # request contains valuable info in both GET and POST methods
        req = request.GET.copy()
        req.update(request.POST)
        if req.get("guide_template_type"):
            self.fields["guide_template_type"] = forms.CharField(
                required=False,
                widget=forms.HiddenInput(),
                initial=req.get("guide_template_type"))

        try:
            volume_types = cinder.volume_type_list(request)
        except Exception:
            exceptions.handle(request,
                              _("Unable to get volume type list."))

        self.fields['volume_type'].choices = [(None, _("No volume type"))] + \
                                             [(type.name, type.name)
                                              for type in volume_types]
Exemplo n.º 14
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))
        process_choices = []
        try:
            version_details = saharaclient.plugin_get_version_details(
                request, plugin, hadoop_version)
            for service, processes in version_details.node_processes.items():
                for process in processes:
                    process_choices.append(
                        (str(service) + ":" + str(process), process))
        except Exception:
            exceptions.handle(request,
                              _("Unable to generate process choices."))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["proxygateway"] = forms.BooleanField(
            label=_("Proxy Gateway"),
            widget=forms.CheckboxInput(),
            help_text=_("Sahara will use instances of this node group to "
                        "access other cluster instances."),
            required=False)

        self.fields["processes"] = forms.MultipleChoiceField(
            label=_("Processes"),
            widget=forms.CheckboxSelectMultiple(),
            help_text=_("Processes to be launched in node group"),
            choices=process_choices)

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=plugin
        )
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=hadoop_version
        )

        node_parameters = hlps.get_general_node_group_configs(plugin,
                                                              hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)

        if request.REQUEST.get("guide_template_type"):
            self.fields["guide_template_type"] = forms.CharField(
                required=False,
                widget=forms.HiddenInput(),
                initial=request.REQUEST.get("guide_template_type"))

        try:
            volume_types = cinder.volume_type_list(request)
        except Exception:
            exceptions.handle(request,
                              _("Unable to get volume type list."))

        self.fields['volume_type'].choices = [(None, _("No volume type"))] + \
                                             [(type.name, type.name)
                                              for type in volume_types]
Exemplo n.º 15
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["use_autoconfig"] = forms.BooleanField(
            label=_("Auto-configure"),
            help_text=_("If selected, instances of a node group will be "
                        "automatically configured during cluster "
                        "creation. Otherwise you should manually specify "
                        "configuration values."),
            required=False,
            widget=forms.CheckboxInput(),
            initial=True,
        )

        self.fields["proxygateway"] = forms.BooleanField(
            label=_("Proxy Gateway"),
            widget=forms.CheckboxInput(),
            help_text=_("Sahara will use instances of this node group to "
                        "access other cluster instances."),
            required=False)

        self.fields['is_public'] = acl_utils.get_is_public_form(
            _("node group template"))
        self.fields['is_protected'] = acl_utils.get_is_protected_form(
            _("node group template"))

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(), initial=plugin)
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(), initial=hadoop_version)

        self.fields["storage"].choices = storage_choices(request)

        node_parameters = hlps.get_general_node_group_configs(
            plugin, hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)

        # when we copy or edit a node group template then
        # request contains valuable info in both GET and POST methods
        req = request.GET.copy()
        req.update(request.POST)
        if req.get("guide_template_type"):
            self.fields["guide_template_type"] = forms.CharField(
                required=False,
                widget=forms.HiddenInput(),
                initial=req.get("guide_template_type"))

        if is_cinder_enabled(request):
            volume_types = cinder.volume_type_list(request)
        else:
            volume_types = []

        self.fields['volume_type'].choices = [(None, _("No volume type"))] + \
                                             [(type.name, type.name)
                                              for type in volume_types]
Exemplo n.º 16
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    def __init__(self, request, *args, **kwargs):
        super(GeneralConfigAction, self).__init__(request, *args, **kwargs)

        hlps = helpers.Helpers(request)

        plugin, hadoop_version = (
            workflow_helpers.get_plugin_and_hadoop_version(request))

        if not saharaclient.SAHARA_AUTO_IP_ALLOCATION_ENABLED:
            pools = network.floating_ip_pools_list(request)
            pool_choices = [(pool.id, pool.name) for pool in pools]
            pool_choices.insert(0, (None, "Do not assign floating IPs"))

            self.fields['floating_ip_pool'] = forms.ChoiceField(
                label=_("Floating IP Pool"),
                choices=pool_choices,
                required=False)

        self.fields["use_autoconfig"] = forms.BooleanField(
            label=_("Auto-configure"),
            help_text=_("If selected, instances of a node group will be "
                        "automatically configured during cluster "
                        "creation. Otherwise you should manually specify "
                        "configuration values."),
            required=False,
            widget=forms.CheckboxInput(),
            initial=True,
        )

        self.fields["proxygateway"] = forms.BooleanField(
            label=_("Proxy Gateway"),
            widget=forms.CheckboxInput(),
            help_text=_("Sahara will use instances of this node group to "
                        "access other cluster instances."),
            required=False)

        self.fields["plugin_name"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=plugin
        )
        self.fields["hadoop_version"] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=hadoop_version
        )
        node_parameters = hlps.get_general_node_group_configs(plugin,
                                                              hadoop_version)
        for param in node_parameters:
            self.fields[param.name] = workflow_helpers.build_control(param)

        if request.REQUEST.get("guide_template_type"):
            self.fields["guide_template_type"] = forms.CharField(
                required=False,
                widget=forms.HiddenInput(),
                initial=request.REQUEST.get("guide_template_type"))

        try:
            volume_types = cinder.volume_type_list(request)
        except Exception:
            exceptions.handle(request,
                              _("Unable to get volume type list."))

        self.fields['volume_type'].choices = [(None, _("No volume type"))] + \
                                             [(type.name, type.name)
                                              for type in volume_types]