Add export of cluster templates

Partially-Implements: bp portable-node-group-and-cluster-templates

Depends-On: Ib5a2df4013840050b8034bcefd68040f508d0b31

This change adds command
'dataprocessing cluster template export'
to OpenStack CLI.

Change-Id: I027169ace70929318990a4225d456bf1cf8a83b2

3 files changed, 41 insertions, 1 deletions

diff --git a/saharaclient/api/cluster_templates.py b/saharaclient/api/cluster_templates.py
index 9c7bd43..da9b3fe 100644
--- a/saharaclient/api/cluster_templates.py
+++ b/saharaclient/api/cluster_templates.py
@@ -97,3 +97,7 @@ class ClusterTemplateManager(base.ResourceManager):
     def delete(self, cluster_template_id):
         """Delete a Cluster Template."""
         self._delete('/cluster-templates/%s' % cluster_template_id)
+
+    def export(self, cluster_template_id):
+        """Export a Cluster Template."""
+        return self._get('/cluster-templates/%s/export' % cluster_template_id)
diff --git a/saharaclient/osc/v1/cluster_templates.py b/saharaclient/osc/v1/cluster_templates.py
index e3154df..6441c17 100644
--- a/saharaclient/osc/v1/cluster_templates.py
+++ b/saharaclient/osc/v1/cluster_templates.py
@@ -509,7 +509,7 @@ class UpdateClusterTemplate(command.ShowOne):
 
 
 class ImportClusterTemplate(command.ShowOne):
-    """Imports node group template"""
+    """Imports cluster template"""
 
     log = logging.getLogger(__name__ + ".ImportClusterTemplate")
 
@@ -588,3 +588,38 @@ class ImportClusterTemplate(command.ShowOne):
         data = utils.prepare_data(data, CT_FIELDS)
 
         return self.dict2columns(data)
+
+
+class ExportClusterTemplate(command.Command):
+    """Export cluster template to JSON"""
+
+    log = logging.getLogger(__name__ + ".ExportClusterTemplate")
+
+    def get_parser(self, prog_name):
+        parser = super(ExportClusterTemplate, self).get_parser(prog_name)
+        parser.add_argument(
+            "cluster_template",
+            metavar="<cluster-template>",
+            help="Name or id of the cluster template to export",
+        )
+        parser.add_argument(
+            "--file",
+            metavar="<filename>",
+            help="Name of the file cluster template should be exported to "
+                 "If not provided, print to stdout"
+        )
+
+        return parser
+
+    def take_action(self, parsed_args):
+        self.log.debug("take_action(%s)", parsed_args)
+        client = self.app.client_manager.data_processing
+        ngt_id = utils.get_resource_id(
+            client.cluster_templates, parsed_args.cluster_template)
+        response = client.cluster_templates.export(ngt_id)
+        result = json.dumps(response._info, indent=4)+"\n"
+        if parsed_args.file:
+            with open(parsed_args.file, "w+") as file:
+                file.write(result)
+        else:
+            sys.stdout.write(result)
diff --git a/setup.cfg b/setup.cfg
index d1fa15a..fd0c8c5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -62,6 +62,7 @@ openstack.data_processing.v1 =
     dataprocessing_cluster_template_update = saharaclient.osc.v1.cluster_templates:UpdateClusterTemplate
     dataprocessing_cluster_template_delete = saharaclient.osc.v1.cluster_templates:DeleteClusterTemplate
     dataprocessing_cluster_template_import = saharaclient.osc.v1.cluster_templates:ImportClusterTemplate
+    dataprocessing_cluster_template_export = saharaclient.osc.v1.cluster_templates:ExportClusterTemplate
 
     dataprocessing_cluster_create = saharaclient.osc.v1.clusters:CreateCluster
     dataprocessing_cluster_list = saharaclient.osc.v1.clusters:ListClusters