add lcm Async task in workflow

add lcm Async task in workflow to support NS

Change-Id: I8c9a70558851cc40fb7ff03eee5d66b5247e3ec7
Issue-ID: VFC-1041
Signed-off-by: maopengzhang <zhang.maopeng1@zte.com.cn>

diff --git a/lcm/workflows/graphflow/task/lcm_async_rest_task.py b/lcm/workflows/graphflow/task/lcm_async_rest_task.py
new file mode 100644 (file)
index 0000000..2e3b606
--- /dev/null
+++ b/lcm/workflows/graphflow/task/lcm_async_rest_task.py
@@ -0,0 +1,56 @@
+# Copyright 2018 ZTE Corporation.
+#
+# 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 logging
+import json
+from lcm.workflows.graphflow.task.async_rest_task import ASyncRestTask
+from lcm.pub.utils import restcall
+
+logger = logging.getLogger(__name__)
+
+
+class LcmASyncRestTask(ASyncRestTask):
+
+    METHOD_GET_JOB_STATUS = "status"
+
+    def __init__(self, *args):
+        super(LcmASyncRestTask, self).__init__(*args)
+        self.job_url = "/api/nslcm/v1/jobs/%s"
+
+    def call_rest(self, url, method, content=None):
+        ret = restcall.req_by_msb(url, method, content)
+        return ret[2], json.JSONDecoder().decode(ret[1])
+
+    def get_ext_status(self):
+        job_id = self.parse_job_id()
+        logger.debug("get_ext_status %s", self.key)
+        job_status = None
+        if job_id:
+            url = "/api/nslcm/v1/jobs/%s" % job_id
+            status, job_result = self.call_rest(url, self.GET)
+            if status in self.STATUS_OK:
+                progress = job_result["responseDescriptor"]["progress"]
+                if progress == 100:
+                    job_status = self.FINISHED
+                elif progress == 255:
+                    job_status = self.ERROR
+                else:
+                    job_status = self.PROCESSING
+        return job_status
+
+    def parse_job_id(self):
+        if self.output:
+            return self.output["jobId"] if "jobId" in self.output else None
+        else:
+            return None