Add API to get the status of async task

JIRA: YARDSTICK-526

Currently there are many API run a task using sub thread.
But we don't know the status of this task.
So we need to offer a API to query the status of this task.

Change-Id: I8d2cc558750bf9270aed4a7abb8bf35d17894d83
Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

3 files changed, 41 insertions, 6 deletions

diff --git a/api/database/__init__.py b/api/database/__init__.py
index bc2708bc7..5b0bb05a2 100644
--- a/api/database/__init__.py
+++ b/api/database/__init__.py
@@ -21,9 +21,3 @@ db_session = scoped_session(sessionmaker(autocommit=False,
                                          bind=engine))
 Base = declarative_base()
 Base.query = db_session.query_property()
-
-
-def init_db():
-    subclasses = [subclass.__name__ for subclass in Base.__subclasses__()]
-    logger.debug('Import models: %s', subclasses)
-    Base.metadata.create_all(bind=engine)
diff --git a/api/database/handler.py b/api/database/handler.py
new file mode 100644
index 000000000..f6a22578f
--- /dev/null
+++ b/api/database/handler.py
@@ -0,0 +1,30 @@
+# ############################################################################
+# Copyright (c) 2017 Huawei Technologies Co.,Ltd and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+# ############################################################################
+from api.database import db_session
+from api.database.models import AsyncTasks
+
+
+class AsyncTaskHandler(object):
+    def insert(self, kwargs):
+        task = AsyncTasks(**kwargs)
+        db_session.add(task)
+        db_session.commit()
+        return task
+
+    def update_status(self, task, status):
+        task.status = status
+        db_session.commit()
+
+    def update_error(self, task, error):
+        task.error = error
+        db_session.commit()
+
+    def get_task_by_taskid(self, task_id):
+        task = AsyncTasks.query.filter_by(task_id=task_id).first()
+        return task
diff --git a/api/database/models.py b/api/database/models.py
index 25e323842..2fc141c1f 100644
--- a/api/database/models.py
+++ b/api/database/models.py
@@ -23,3 +23,14 @@ class Tasks(Base):
 
     def __repr__(self):
         return '<Task %r>' % Tasks.task_id
+
+
+class AsyncTasks(Base):
+    __tablename__ = 'asynctasks'
+    id = Column(Integer, primary_key=True)
+    task_id = Column(String(30))
+    status = Column(Integer)
+    error = Column(String(120))
+
+    def __repr__(self):
+        return '<Task %r>' % AsyncTasks.task_id