Implement job-types endpoint support methods for CDH plugin

This change implements the optional methods in the Plugins SPI
to support the job-types endpoint for the CDH plugin.

Config hints at this point are unchanged. Additional work may be
needed to provide config-hints specific to CDH plugin versions.

Partial-Implements: blueprint edp-job-types-endpoint
Change-Id: I7cc9ab01d8e23bdd3c240a2962140460bad2d33a

sahara/plugins/cdh/abstractversionhandler.py

@@ -57,6 +57,14 @@ class AbstractVersionHandler(object):
     def get_edp_engine(self, cluster, job_type):
         return
 
+    @abc.abstractmethod
+    def get_edp_job_types(self):
+        return []
+
+    @abc.abstractmethod
+    def get_edp_config_hints(self, job_type):
+        return {}
+
     @abc.abstractmethod
     def get_open_ports(self, node_group):
         return

sahara/plugins/cdh/plugin.py

@@ -71,6 +71,19 @@ class CDHPluginProvider(p.ProvisioningPluginBase):
         return self._get_version_handler(
             cluster.hadoop_version).get_edp_engine(cluster, job_type)
 
+    def get_edp_job_types(self, versions=[]):
+        res = {}
+        for vers in self.version_factory.get_versions():
+            if not versions or vers in versions:
+                vh = self.version_factory.get_version_handler(vers)
+                res[vers] = vh.get_edp_job_types()
+        return res
+
+    def get_edp_config_hints(self, job_type, version):
+        version_handler = (
+            self.version_factory.get_version_handler(version))
+        return version_handler.get_edp_config_hints(job_type)
+
     def get_open_ports(self, node_group):
         return self._get_version_handler(
             node_group.cluster.hadoop_version).get_open_ports(node_group)

sahara/plugins/cdh/v5/versionhandler.py

@@ -100,5 +100,11 @@ class VersionHandler(avm.AbstractVersionHandler):
             return edp_engine.EdpOozieEngine(cluster)
         return None
 
+    def get_edp_job_types(self):
+        return edp_engine.EdpOozieEngine.get_supported_job_types()
+
+    def get_edp_config_hints(self, job_type):
+        return edp_engine.EdpOozieEngine.get_possible_job_config(job_type)
+
     def get_open_ports(self, node_group):
         return dp.get_open_ports(node_group)

sahara/plugins/cdh/v5_3_0/versionhandler.py

@@ -109,5 +109,11 @@ class VersionHandler(avm.AbstractVersionHandler):
             return edp_engine.EdpOozieEngine(cluster)
         return None
 
+    def get_edp_job_types(self):
+        return edp_engine.EdpOozieEngine.get_supported_job_types()
+
+    def get_edp_config_hints(self, job_type):
+        return edp_engine.EdpOozieEngine.get_possible_job_config(job_type)
+
     def get_open_ports(self, node_group):
         return dp.get_open_ports(node_group)