173 lines
6.7 KiB
Python
173 lines
6.7 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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from django.utils.translation import gettext_lazy as _
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from saharaclient.api import base as api_base
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from horizon import exceptions
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from sahara_dashboard.api import sahara as saharaclient
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import sahara_dashboard.content.data_processing.clusters. \
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cluster_templates.workflows.create as clt_create_flow
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import sahara_dashboard.content.data_processing.clusters. \
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clusters.workflows.create as cl_create_flow
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from sahara_dashboard.content.data_processing.utils import workflow_helpers
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from sahara_dashboard import utils
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class NodeGroupsStep(clt_create_flow.ConfigureNodegroups):
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pass
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class ScaleCluster(cl_create_flow.ConfigureCluster,
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workflow_helpers.StatusFormatMixin):
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slug = "scale_cluster"
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name = _("Scale Cluster")
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finalize_button_name = _("Scale")
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success_url = "horizon:project:data_processing.clusters:index"
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default_steps = (NodeGroupsStep, )
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def __init__(self, request, context_seed, entry_point, *args, **kwargs):
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ScaleCluster._cls_registry = []
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self.success_message = _("Scaled cluster successfully started.")
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cluster_id = context_seed["cluster_id"]
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try:
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cluster = saharaclient.cluster_get(request, cluster_id)
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plugin = cluster.plugin_name
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if saharaclient.VERSIONS.active == '2':
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version_attr = 'plugin_version'
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else:
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version_attr = 'hadoop_version'
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hadoop_version = getattr(cluster, version_attr)
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# Initialize deletable node groups.
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deletable = dict()
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for group in cluster.node_groups:
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deletable[group["name"]] = "false"
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request.GET = request.GET.copy()
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request.GET.update({
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"cluster_id": cluster_id,
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"plugin_name": plugin,
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version_attr: hadoop_version,
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"deletable": deletable
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})
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super(ScaleCluster, self).__init__(request, context_seed,
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entry_point, *args,
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**kwargs)
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# Initialize node groups.
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for step in self.steps:
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if not isinstance(step, clt_create_flow.ConfigureNodegroups):
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continue
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ng_action = step.action
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template_ngs = cluster.node_groups
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if 'forms_ids' in request.POST:
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continue
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ng_action.groups = []
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for i, templ_ng in enumerate(template_ngs):
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group_name = "group_name_%d" % i
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template_id = "template_id_%d" % i
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count = "count_%d" % i
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serialized = "serialized_%d" % i
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serialized_val = utils.serialize(json.dumps(
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workflow_helpers.clean_node_group(templ_ng)))
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ng_action.groups.append({
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"name": templ_ng["name"],
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"template_id": templ_ng["node_group_template_id"],
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"count": templ_ng["count"],
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"id": i,
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"deletable": "false",
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"serialized": serialized_val
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})
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workflow_helpers.build_node_group_fields(ng_action,
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group_name,
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template_id,
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count,
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serialized)
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except Exception:
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exceptions.handle(request,
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_("Unable to fetch cluster to scale"))
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def format_status_message(self, message):
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# Scaling form requires special handling because it has no Cluster name
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# in it's context
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error_description = getattr(self, 'error_description', None)
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if error_description:
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return error_description
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else:
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return self.success_message
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def handle(self, request, context):
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cluster_id = request.GET["cluster_id"]
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try:
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cluster = saharaclient.cluster_get(request, cluster_id)
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existing_node_groups = set([])
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for ng in cluster.node_groups:
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existing_node_groups.add(ng["name"])
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scale_object = dict()
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ids = json.loads(context["ng_forms_ids"])
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for _id in ids:
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name = context["ng_group_name_%s" % _id]
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template_id = context["ng_template_id_%s" % _id]
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count = context["ng_count_%s" % _id]
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if name not in existing_node_groups:
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if "add_node_groups" not in scale_object:
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scale_object["add_node_groups"] = []
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scale_object["add_node_groups"].append(
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{"name": name,
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"node_group_template_id": template_id,
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"count": int(count)})
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else:
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old_count = None
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for ng in cluster.node_groups:
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if name == ng["name"]:
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old_count = ng["count"]
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break
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if old_count != count:
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if "resize_node_groups" not in scale_object:
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scale_object["resize_node_groups"] = []
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scale_object["resize_node_groups"].append(
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{"name": name,
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"count": int(count)}
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)
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except Exception:
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scale_object = {}
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exceptions.handle(request,
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_("Unable to fetch cluster to scale."))
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try:
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saharaclient.cluster_scale(request, cluster_id, scale_object)
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return True
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except api_base.APIException as e:
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self.error_description = str(e)
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return False
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except Exception:
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exceptions.handle(request,
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_("Scale cluster operation failed"))
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return False
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