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Fix the image type function cookbook

Change-Id: If4af77e29802cb62d596df2d0901c712e78d2812
Story: 2003145
Task: 25755
changes/79/599579/2
Lingxian Kong 3 years ago
parent
commit
e9e0465110
  1. 46
      doc/source/user/cookbook_function.rst

46
doc/source/user/cookbook_function.rst

@ -25,7 +25,7 @@ examples for how to create functions in Qinling.
Examples
~~~~~~~~
Create python function with libraries in a package
Create Python function with libraries in a package
--------------------------------------------------
This guide describes how to create a python function with libraries in a
@ -294,8 +294,8 @@ execution log to see the whole process.
Pay attention to the object ``content-length`` value which is smaller than
the original object.
Creating a function using OpenStack Swift
-----------------------------------------
Create a function stored in OpenStack Swift
-------------------------------------------
OpenStack object storage service, swift can be integrated with Qinling to
create functions. You can upload your function package to swift and create
@ -415,10 +415,10 @@ a Python 2.7 runtime available in the deployment.
It is very easy and simple to use Qinling with swift. We have successfully created and
invoked a function using OpenStack Swift.
Creating Image type function in Qinling
---------------------------------------
Create image(docker) type function
----------------------------------
With the help of docker you would be able to create image type functions in
With the help of Docker Hub you would be able to create image type functions in
Qinling. As a prerequisite, you need to have a Docker Hub account. In the
following instructions replace ``DOCKER_USER`` with your own docker hub
username.
@ -432,29 +432,28 @@ username.
mkdir ~/qinling_test
cd ~/qinling_test
cat <<EOF > ~/qinling_test/hello.py
import sys
import time
def main():
print ('Hello from', sys.argv[1])
print('Hello', sys.argv[1])
time.sleep(3)
if __name__ == '__main__':
main()
EOF
cat <<EOF > ~/qinling_test/Dockerfile
FROM python:3.7.0-alpine3.7
COPY . /qinling_test
WORKDIR /qinling_test
ENTRYPOINT [ "python", "./hello.py" ]
CMD ["Qinling!"]
CMD ["Qinling"]
EOF
.. end
#. You must first run docker login to authenticate, build the image and push
#. You need first run docker login to authenticate, build the image and push
to Docker Hub.
.. code-block:: console
@ -469,8 +468,7 @@ username.
.. code-block:: console
openstack function create --name docker_test --image DOCKER_USER/qinling_test
$ openstack function create --name docker_test --image DOCKER_USER/qinling_test
+-------------+--------------------------------------------------------------+
| Field | Value |
+-------------+--------------------------------------------------------------+
@ -488,16 +486,13 @@ username.
| memory_size | 33554432 |
+-------------+--------------------------------------------------------------+
function_id=6fa6932d-ee43-41d4-891c-77a96b52c697
.. end
#. Invoke the function by specifying function ID.
#. Invoke the function by specifying the function name or ID.
.. code-block:: console
openstack function execution create $function_id
$ openstack function execution create docker_test
+------------------+--------------------------------------+
| Field | Value |
+------------------+--------------------------------------+
@ -506,7 +501,7 @@ username.
| function_version | 0 |
| description | None |
| input | None |
| result | {"output": "Hello from Qinling!\n"} |
| result | {"duration": 3} |
| status | success |
| sync | True |
| project_id | 6ae7142bff0542d8a8f3859ffa184236 |
@ -516,4 +511,11 @@ username.
.. end
In the result, you can see the output of image type function.
#. Check the execution log.
.. code-block:: console
$ openstack function execution log show 8fe0e2e9-2133-4abb-8cd4-f2f14935cab4
Hello Qinling
.. end

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