ovirt vm clone from snapshot (#55650)

* ovirt init clone from snapshot

* ovirt snapshot update cluster

* rename srcvm to snashot_vm

* update required together syntax

* update required together sytax

lib/ansible/modules/cloud/ovirt/ovirt_vm.py

@@ -784,6 +784,18 @@ options:
             - NOTE - If there are multiple next run configuration changes on the VM, the first change may get reverted if this option is not passed.
         version_added: "2.8"
         type: bool
+    snapshot_name:
+        description:
+            - "Snapshot to clone VM from."
+            - "Snapshot with description specified should exist."
+            - "You have to specify C(snapshot_vm) parameter with virtual machine name of this snapshot."
+        version_added: "2.9"
+    snapshot_vm:
+        description:
+            - "Source VM to clone VM from."
+            - "VM should have snapshot specified by C(snapshot)."
+            - "If C(snapshot_name) specified C(snapshot_vm) is required."
+        version_added: "2.9"
 
 notes:
     - If VM is in I(UNASSIGNED) or I(UNKNOWN) state before any operation, the module will fail.
@@ -1141,6 +1153,13 @@ EXAMPLES = '''
         host: myhost
         filename: myvm.ova
         directory: /tmp/
+
+- name: Clone VM from snapshot
+  ovirt_vm:
+    snapshot_vm: myvm
+    snapshot_name: myvm_snap
+    name: myvm_clone
+    state: present
 '''
 
 
@@ -1254,8 +1273,38 @@ class VmsModule(BaseModule):
 
         return disks
 
+    def __get_snapshot(self):
+
+        if self.param('snapshot_vm') is None:
+            return None
+
+        if self.param('snapshot_name') is None:
+            return None
+
+        vms_service = self._connection.system_service().vms_service()
+        vm_id = get_id_by_name(vms_service, self.param('snapshot_vm'))
+        vm_service = vms_service.vm_service(vm_id)
+
+        snaps_service = vm_service.snapshots_service()
+        snaps = snaps_service.list()
+        snap = next(
+            (s for s in snaps if s.description == self.param('snapshot_name')),
+            None
+        )
+        return snap
+
+    def __get_cluster(self):
+        if self.param('cluster') is not None:
+            return self.param('cluster')
+        elif self.param('snapshot_name') is not None and self.param('snapshot_vm') is not None:
+            vms_service = self._connection.system_service().vms_service()
+            vm = search_by_name(vms_service, self.param('snapshot_vm'))
+            return self._connection.system_service().clusters_service().cluster_service(vm.cluster.id).get().name
+
     def build_entity(self):
         template = self.__get_template_with_version()
+        cluster = self.__get_cluster()
+        snapshot = self.__get_snapshot()
 
         disk_attachments = self.__get_storage_domain_and_all_template_disks(template)
 
@@ -1263,8 +1312,8 @@ class VmsModule(BaseModule):
             id=self.param('id'),
             name=self.param('name'),
             cluster=otypes.Cluster(
-                name=self.param('cluster')
-            ) if self.param('cluster') else None,
+                name=cluster
+            ) if cluster else None,
             disk_attachments=disk_attachments,
             template=otypes.Template(
                 id=template.id,
@@ -1400,6 +1449,7 @@ class VmsModule(BaseModule):
                 ) for cp in self.param('custom_properties') if cp
             ] if self.param('custom_properties') is not None else None,
             initialization=self.get_initialization() if self.param('cloud_init_persist') else None,
+            snapshots=[otypes.Snapshot(id=snapshot.id)] if snapshot is not None else None,
         )
 
     def _get_export_domain_service(self):
@@ -2264,6 +2314,8 @@ def main():
         force_migrate=dict(type='bool'),
         migrate=dict(type='bool', default=None),
         next_run=dict(type='bool'),
+        snapshot_name=dict(type='str'),
+        snapshot_vm=dict(type='str'),
     )
     module = AnsibleModule(
         argument_spec=argument_spec,
@@ -2271,7 +2323,8 @@ def main():
         required_one_of=[['id', 'name']],
         required_if=[
             ('state', 'registered', ['storage_domain']),
-        ]
+        ],
+        required_together=[['snapshot_name', 'snapshot_vm']]
     )
 
     check_sdk(module)