Jira ESCALATOR-41:get cluster list from installer

Change-Id: Ie3cd22b2f8398ec893686445ac85da7e69ffffb7
Signed-off-by: Jing Sun <sun.jing22@zte.com.cn>

9 files changed, 449 insertions, 0 deletions

diff --git a/api/escalator/api/v1/clusters.py b/api/escalator/api/v1/clusters.py
new file mode 100644
index 0000000..c37dda1
--- /dev/null
+++ b/api/escalator/api/v1/clusters.py
@@ -0,0 +1,123 @@
+# Copyright 2013 OpenStack Foundation
+# All Rights Reserved.
+#
+#    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
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    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.
+
+"""
+/clusters list for Escalator v1 API
+"""
+from oslo_log import log as logging
+from webob.exc import HTTPBadRequest
+from webob.exc import HTTPForbidden
+
+from escalator.api import policy
+from escalator.api.v1 import controller
+from escalator.common import exception
+from escalator.common import utils
+from escalator.common import wsgi
+from escalator import i18n
+from escalator import notifier
+import escalator.installer.daisy.api as daisy_api
+
+LOG = logging.getLogger(__name__)
+_ = i18n._
+_LE = i18n._LE
+_LI = i18n._LI
+_LW = i18n._LW
+
+
+class Controller(controller.BaseController):
+    """
+    WSGI controller for clusters resource in Escalaotr v1 API
+
+    The clusters resource API is a RESTful web service for cluster data.
+    The API is as follows::
+
+        GET  /clusters -- Returns a set of brief metadata about clusters
+        GET  /clusters -- Returns a set of detailed metadata about
+                              clusters
+    """
+    def __init__(self):
+        self.notifier = notifier.Notifier()
+        self.policy = policy.Enforcer()
+
+    def _enforce(self, req, action, target=None):
+        """Authorize an action against our policies"""
+        if target is None:
+            target = {}
+        try:
+            self.policy.enforce(req.context, action, target)
+        except exception.Forbidden:
+            raise HTTPForbidden()
+
+    def detail(self, req):
+        """
+        Returns detailed information for all available clusters
+
+        :param req: The WSGI/Webob Request object
+        :retval The response body is a mapping of the following form::
+
+            {'clusters': [
+                {'id': <ID>,
+                 'name': <NAME>,
+                 'nodes': <NODES>,
+                 'networks': <NETWORKS>,
+                 'description': <DESCRIPTION>,
+                 'created_at': <TIMESTAMP>,
+                 'updated_at': <TIMESTAMP>,
+                 'deleted_at': <TIMESTAMP>|<NONE>,}, ...
+            ]}
+        """
+        self._enforce(req, 'get_clusters')
+        try:
+            clusters = daisy_api.cluster_list(req.context)
+            clusters_list = list()
+            while True:
+                try:
+                    cluster_new = next(clusters)
+                    clusters_list.append(cluster_new)
+                except StopIteration:
+                    break
+        except exception.Invalid as e:
+            raise HTTPBadRequest(explanation=e.msg, request=req)
+        return dict(clusters=clusters_list)
+
+
+class ProjectDeserializer(wsgi.JSONRequestDeserializer):
+    """Handles deserialization of specific controller method requests."""
+
+    def _deserialize(self, request):
+        result = {}
+        result["cluster_meta"] = utils.get_cluster_meta(request)
+        return result
+
+
+class ProjectSerializer(wsgi.JSONResponseSerializer):
+    """Handles serialization of specific controller method responses."""
+
+    def __init__(self):
+        self.notifier = notifier.Notifier()
+
+    def get_cluster(self, response, result):
+        cluster_meta = result['cluster_meta']
+        response.status = 201
+        response.headers['Content-Type'] = 'application/json'
+        response.body = self.to_json(dict(cluster=cluster_meta))
+        return response
+
+
+def create_resource():
+    """Projects resource factory method"""
+    deserializer = ProjectDeserializer()
+    serializer = ProjectSerializer()
+    return wsgi.Resource(Controller(), deserializer, serializer)
diff --git a/api/escalator/api/v1/controller.py b/api/escalator/api/v1/controller.py
new file mode 100644
index 0000000..ad0b9d7
--- /dev/null
+++ b/api/escalator/api/v1/controller.py
@@ -0,0 +1,13 @@
+class BaseController(object):
+
+    def get_cluster_meta_or_404(self, request, cluster_id):
+        """
+        Grabs the cluster metadata for an cluster with a supplied
+        identifier or raises an HTTPNotFound (404) response
+
+        :param request: The WSGI/Webob Request object
+        :param cluster_id: The opaque cluster identifier
+
+        :raises HTTPNotFound if cluster does not exist
+        """
+        pass
diff --git a/api/escalator/api/v1/router.py b/api/escalator/api/v1/router.py
index e1709ca..5942cb1 100644
--- a/api/escalator/api/v1/router.py
+++ b/api/escalator/api/v1/router.py
@@ -14,6 +14,7 @@
 #    under the License.
 from escalator.common import wsgi
 from escalator.api.v1 import versions
+from escalator.api.v1 import clusters
 
 
 class API(wsgi.Router):
@@ -24,6 +25,12 @@ class API(wsgi.Router):
         wsgi.Resource(wsgi.RejectMethodController())
 
         versions_resource = versions.create_resource()
+        clusters_resource = clusters.create_resource()
+
+        mapper.connect("/clusters",
+                       controller=clusters_resource,
+                       action='detail',
+                       conditions={'method': ['GET']})
 
         mapper.connect("/versions",
                        controller=versions_resource,
diff --git a/api/escalator/installer/__init__.py b/api/escalator/installer/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/api/escalator/installer/__init__.py
diff --git a/api/escalator/installer/daisy/__init__.py b/api/escalator/installer/daisy/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/api/escalator/installer/daisy/__init__.py
diff --git a/api/escalator/installer/daisy/api.py b/api/escalator/installer/daisy/api.py
new file mode 100644
index 0000000..661d0d5
--- /dev/null
+++ b/api/escalator/installer/daisy/api.py
@@ -0,0 +1,14 @@
+from daisyclient.v1 import client as daisy_client
+
+
+def daisyclient(request):
+    DAISY_ENDPOINT_URL = "http://127.0.0.1:19292"
+    return daisy_client.Client(version=1, endpoint=DAISY_ENDPOINT_URL)
+
+
+def cluster_list(request):
+    return daisyclient(request).clusters.list()
+
+
+def cluster_get(request, cluster_id):
+    return daisyclient(request).clusters.get(cluster_id)
diff --git a/client/escalatorclient/v1/client.py b/client/escalatorclient/v1/client.py
index d5bf6bc..974fc4e 100644
--- a/client/escalatorclient/v1/client.py
+++ b/client/escalatorclient/v1/client.py
@@ -16,6 +16,7 @@
 from escalatorclient.common import http
 from escalatorclient.common import utils
 from escalatorclient.v1.versions import VersionManager
+from escalatorclient.v1.clusters import ClusterManager
 
 
 class Client(object):
@@ -34,3 +35,4 @@ class Client(object):
         self.version = version or 1.0
         self.http_client = http.HTTPClient(endpoint, *args, **kwargs)
         self.versions = VersionManager(self.http_client)
+        self.clusters = ClusterManager(self.http_client)
diff --git a/client/escalatorclient/v1/clusters.py b/client/escalatorclient/v1/clusters.py
new file mode 100644
index 0000000..8877d8b
--- /dev/null
+++ b/client/escalatorclient/v1/clusters.py
@@ -0,0 +1,234 @@
+# Copyright 2012 OpenStack Foundation
+# All Rights Reserved.
+#
+#    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
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    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.
+
+import copy
+
+from oslo_utils import encodeutils
+from oslo_utils import strutils
+import six
+import six.moves.urllib.parse as urlparse
+
+from escalatorclient.common import utils
+from escalatorclient.openstack.common.apiclient import base
+
+DEFAULT_PAGE_SIZE = 20
+
+SORT_DIR_VALUES = ('asc', 'desc')
+SORT_KEY_VALUES = ('name', 'auto_scale', 'id', 'created_at', 'updated_at')
+
+OS_REQ_ID_HDR = 'x-openstack-request-id'
+
+
+class Cluster(base.Resource):
+
+    def __repr__(self):
+        return "<Cluster %s>" % self._info
+
+    def data(self, **kwargs):
+        return self.manager.data(self, **kwargs)
+
+
+class ClusterManager(base.ManagerWithFind):
+    resource_class = Cluster
+
+    def _list(self, url, response_key, obj_class=None, body=None):
+        resp, body = self.client.get(url)
+
+        if obj_class is None:
+            obj_class = self.resource_class
+
+        data = body[response_key]
+        return ([obj_class(self, res, loaded=True) for res in data if res],
+                resp)
+
+    def _cluster_meta_from_headers(self, headers):
+        meta = {'properties': {}}
+        safe_decode = encodeutils.safe_decode
+        for key, value in six.iteritems(headers):
+            value = safe_decode(value, incoming='utf-8')
+            if key.startswith('x-image-meta-property-'):
+                _key = safe_decode(key[22:], incoming='utf-8')
+                meta['properties'][_key] = value
+            elif key.startswith('x-image-meta-'):
+                _key = safe_decode(key[13:], incoming='utf-8')
+                meta[_key] = value
+
+        for key in ['is_public', 'protected', 'deleted']:
+            if key in meta:
+                meta[key] = strutils.bool_from_string(meta[key])
+
+        return self._format_cluster_meta_for_user(meta)
+
+    def _cluster_meta_to_headers(self, fields):
+        headers = {}
+        fields_copy = copy.deepcopy(fields)
+
+        # NOTE(flaper87): Convert to str, headers
+        # that are not instance of basestring. All
+        # headers will be encoded later, before the
+        # request is sent.
+
+        for key, value in six.iteritems(fields_copy):
+            headers['%s' % key] = utils.to_str(value)
+        return headers
+
+    @staticmethod
+    def _format_cluster_meta_for_user(meta):
+        for key in ['size', 'min_ram', 'min_disk']:
+            if key in meta:
+                try:
+                    meta[key] = int(meta[key]) if meta[key] else 0
+                except ValueError:
+                    pass
+        return meta
+
+    def get(self, cluster, **kwargs):
+        """Get the metadata for a specific cluster.
+
+        :param cluster: host object or id to look up
+        :rtype: :class:`Cluster`
+        """
+        cluster_id = base.getid(cluster)
+        resp, body = self.client.get('/v1/clusters/%s'
+                                     % urlparse.quote(str(cluster_id)))
+        # meta = self._cluster_meta_from_headers(resp.headers)
+        return_request_id = kwargs.get('return_req_id', None)
+        if return_request_id is not None:
+            return_request_id.append(resp.headers.get(OS_REQ_ID_HDR, None))
+        # return Host(self, meta)
+        return Cluster(self, self._format_cluster_meta_for_user(
+            body['cluster']))
+
+    def data(self, image, do_checksum=True, **kwargs):
+        """Get the raw data for a specific image.
+
+        :param image: image object or id to look up
+        :param do_checksum: Enable/disable checksum validation
+        :rtype: iterable containing image data
+        """
+        image_id = base.getid(image)
+        resp, body = self.client.get('/v1/images/%s'
+                                     % urlparse.quote(str(image_id)))
+        content_length = int(resp.headers.get('content-length', 0))
+        checksum = resp.headers.get('x-image-meta-checksum', None)
+        if do_checksum and checksum is not None:
+            body = utils.integrity_iter(body, checksum)
+        return_request_id = kwargs.get('return_req_id', None)
+        if return_request_id is not None:
+            return_request_id.append(resp.headers.get(OS_REQ_ID_HDR, None))
+
+        return utils.IterableWithLength(body, content_length)
+
+    def _build_params(self, parameters):
+        params = {'limit': parameters.get('page_size', DEFAULT_PAGE_SIZE)}
+
+        if 'marker' in parameters:
+            params['marker'] = parameters['marker']
+
+        sort_key = parameters.get('sort_key')
+        if sort_key is not None:
+            if sort_key in SORT_KEY_VALUES:
+                params['sort_key'] = sort_key
+            else:
+                raise ValueError('sort_key must be one of the following: %s.'
+                                 % ', '.join(SORT_KEY_VALUES))
+
+        sort_dir = parameters.get('sort_dir')
+        if sort_dir is not None:
+            if sort_dir in SORT_DIR_VALUES:
+                params['sort_dir'] = sort_dir
+            else:
+                raise ValueError('sort_dir must be one of the following: %s.'
+                                 % ', '.join(SORT_DIR_VALUES))
+
+        filters = parameters.get('filters', {})
+        params.update(filters)
+
+        return params
+
+    def list(self, **kwargs):
+        """Get a list of clusters.
+
+        :param page_size: number of items to request in each paginated request
+        :param limit: maximum number of clusters to return
+        :param marker: begin returning clusters that
+                       appear later in the cluster
+                       list than that represented by this cluster id
+        :param filters: dict of direct comparison filters that mimics the
+                        structure of an cluster object
+        :param return_request_id: If an empty list is provided, populate this
+                              list with the request ID value from the header
+                              x-openstack-request-id
+        :rtype: list of :class:`Cluster`
+        """
+        absolute_limit = kwargs.get('limit')
+        page_size = kwargs.get('page_size', DEFAULT_PAGE_SIZE)
+
+        def paginate(qp, return_request_id=None):
+            for param, value in six.iteritems(qp):
+                if isinstance(value, six.string_types):
+                    # Note(flaper87) Url encoding should
+                    # be moved inside http utils, at least
+                    # shouldn't be here.
+                    #
+                    # Making sure all params are str before
+                    # trying to encode them
+                    qp[param] = encodeutils.safe_decode(value)
+
+            url = '/v1/clusters?%s' % urlparse.urlencode(qp)
+            clusters, resp = self._list(url, "clusters")
+
+            if return_request_id is not None:
+                return_request_id.append(resp.headers.get(OS_REQ_ID_HDR, None))
+
+            for cluster in clusters:
+                yield cluster
+
+        return_request_id = kwargs.get('return_req_id', None)
+
+        params = self._build_params(kwargs)
+
+        seen = 0
+        while True:
+            seen_last_page = 0
+            filtered = 0
+            for cluster in paginate(params, return_request_id):
+                last_cluster = cluster.id
+
+                if (absolute_limit is not None and
+                        seen + seen_last_page >= absolute_limit):
+                    # Note(kragniz): we've seen enough images
+                    return
+                else:
+                    seen_last_page += 1
+                    yield cluster
+
+            seen += seen_last_page
+
+            if seen_last_page + filtered == 0:
+                # Note(kragniz): we didn't get any clusters in the last page
+                return
+
+            if absolute_limit is not None and seen >= absolute_limit:
+                # Note(kragniz): reached the limit of clusters to return
+                return
+
+            if page_size and seen_last_page + filtered < page_size:
+                # Note(kragniz): we've reached the last page of the clusters
+                return
+
+            # Note(kragniz): there are more clusters to come
+            params['marker'] = last_cluster
+            seen_last_page = 0
diff --git a/client/escalatorclient/v1/shell.py b/client/escalatorclient/v1/shell.py
index 401ad76..10aa1bc 100644
--- a/client/escalatorclient/v1/shell.py
+++ b/client/escalatorclient/v1/shell.py
@@ -19,6 +19,7 @@ import copy
 import functools
 from oslo_utils import strutils
 import escalatorclient.v1.versions
+import escalatorclient.v1.clusters
 from escalatorclient.common import utils
 
 _bool_strict = functools.partial(strutils.bool_from_string, strict=True)
@@ -82,3 +83,58 @@ def do_cluster_version_list(dc, args):
                'checksum', 'description', 'status', 'VERSION_PATCH']
 
     utils.print_list(versions, columns)
+
+
+@utils.arg('--name', metavar='<NAME>',
+           help='Filter version to those that have this name.')
+@utils.arg('--status', metavar='<STATUS>',
+           help='Filter version status.')
+@utils.arg('--type', metavar='<type>',
+           help='Filter by type.')
+@utils.arg('--version', metavar='<version>',
+           help='Filter by version number.')
+@utils.arg('--page-size', metavar='<SIZE>', default=None, type=int,
+           help='Number to request in each paginated request.')
+@utils.arg('--sort-key', default='name',
+           choices=escalatorclient.v1.versions.SORT_KEY_VALUES,
+           help='Sort version list by specified field.')
+@utils.arg('--sort-dir', default='asc',
+           choices=escalatorclient.v1.versions.SORT_DIR_VALUES,
+           help='Sort version list in specified direction.')
+def do_cluster_list(gc, args):
+    """List clusters you can access."""
+    filter_keys = ['name']
+    filter_items = [(key, getattr(args, key)) for key in filter_keys]
+    filters = dict([item for item in filter_items if item[1] is not None])
+
+    kwargs = {'filters': filters}
+    if args.page_size is not None:
+        kwargs['page_size'] = args.page_size
+
+    kwargs['sort_key'] = args.sort_key
+    kwargs['sort_dir'] = args.sort_dir
+
+    clusters = gc.clusters.list(**kwargs)
+
+    columns = ['ID', 'Name', 'Description', 'Nodes', 'Networks',
+               'Auto_scale', 'Use_dns', 'Status']
+    utils.print_list(clusters, columns)
+
+
+@utils.arg('id', metavar='<ID>',
+           help='Filter cluster to those that have this id.')
+def do_cluster_detail(gc, args):
+    """List cluster you can access."""
+    filter_keys = ['id']
+    filter_items = [(key, getattr(args, key)) for key in filter_keys]
+    filters = dict([item for item in filter_items if item[1] is not None])
+    fields = dict(filter(lambda x: x[1] is not None, vars(args).items()))
+    kwargs = {'filters': filters}
+    if filters:
+        cluster = utils.find_resource(gc.clusters, fields.pop('id'))
+        _escalator_show(cluster)
+    else:
+        cluster = gc.clusters.list(**kwargs)
+        columns = ['ID', 'Name', 'Description', 'Nodes',
+                   'Networks', 'Auto_scale', 'Use_dns']
+        utils.print_list(cluster, columns)