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This topic describes how to deploy a Tornado application to Function Compute. Function Compute provides a method different from traditional deployment methods. You can deploy a traditional Tornado application to Function Compute and use the application for production without performing operations such as purchasing a server. The deployed Tornado application can use the auto scaling, pay-as-you-go, and O&M-free features of Function Compute.

Prerequisites

The following operations are complete:

Procedure

Run the following command in the specified directory to initialize a project:

s init devsapp/start-tornado -d start-tornado

The -d parameter specifies the project name. In this example, the project name is start-tornado.

Note Skip this step if the item exists.

Sample command output:

 Serverless Awesome: https://github.com/Serverless-Devs/package-awesome

 devsapp!start-tornado@0.0.7.zip file decompression completed
 please select credential alias default

     _____                          _
    |_   _|                        | |
      | | ___  _ __ _ __   __ _  __| | ___
      | |/ _ \| '__| '_ \ / _` |/ _` |/ _ \
      | | (_) | |  | | | | (_| | (_| | (_) |
      \_/\___/|_|  |_| |_|\__,_|\__,_|\___/


    Welcome to the start-tornado application
     This application requires to open these services:
         FC : https://fc.console.aliyun.com/
         ACR: https://cr.console.aliyun.com/
     This application can help you quickly deploy the Tornado project:
         Full yaml configuration : https://github.com/devsapp/tornado#%E5%AE%8C%E6%95%B4yaml
         Tornado development docs: https://www.tornadoweb.org/en/stable/
     This application homepage: https://github.com/devsapp/start-tornado


 Thanks for using Serverless-Devs
 You could [cd /test/start-flask/strat-tornado] and enjoy your serverless journey!
 If you need help for this example, you can use [s -h] after you enter folder.
 Document Star: https://github.com/Serverless-Devs/Serverless-Devs

Run the following command to go to the project directory:
```
cd start-tornado
```

Run the following command to deploy the project:

s deploy

Sample command output:

[2021-08-30T17:41:56.340] [INFO ] [S-CLI] - Start ...
[2021-08-30T17:41:56.350] [INFO ] [S-CLI] - Start the pre-action
[2021-08-30T17:41:56.350] [INFO ] [S-CLI] - Action: pip3 install -t . -r requirements.txt
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Collecting tornado==6.0.4 (from -r requirements.txt (line 1))
  Downloading http://mirrors.cloud.aliyuncs.com/pypi/packages/95/84/119a46d494f008969bf0c775cb2c6b3579d3c4cc1bb1b41a022aa93ee242/tornado-6.0.4.tar.gz (496 KB)
    100% |████████████████████████████████| 501 KB 32.8 MB/s
Installing collected packages: tornado
  Running setup.py install for tornado ... done
Successfully installed tornado-6.0.4
[2021-08-30T17:41:57.847] [INFO ] [S-CLI] - End the pre-action
 Using web framework type: nas, If you want to deploy with container, you can [s cli fc-default set web-framework container] to switch.
(node:13961) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
  End of request
  Deployed.
  End of request
[2021-08-30T17:42:03.253] [INFO ] [FC-DEPLOY] - Using region: cn-shenzhen
[2021-08-30T17:42:03.254] [INFO ] [FC-DEPLOY] - Using access alias: default
[2021-08-30T17:42:03.254] [INFO ] [FC-DEPLOY] - Using accessKeyID: 188077086902****
[2021-08-30T17:42:03.255] [INFO ] [FC-DEPLOY] - Using accessKeySecret: ldHUiJLoGto****
 Using fc deploy type: sdk, If you want to deploy with pulumi, you can [s cli fc-default set deploy-type pulumi] to switch.
[2021-08-30T17:42:03.608] [INFO ] [FC-DEPLOY] - Checking Service serverless-devs-tornado exists
[2021-08-30T17:42:03.784] [INFO ] [FC-DEPLOY] - Setting role: AliyunFCDefaultRole
[2021-08-30T17:42:03.884] [INFO ] [RAM] - Checking Role AliyunFCDefaultRole exists
[2021-08-30T17:42:04.004] [INFO ] [RAM] - Updating role: AliyunFCDefaultRole
[2021-08-30T17:42:04.107] [INFO ] [RAM] - Checking Plicy AliyunFCDefaultRolePolicy exists
[2021-08-30T17:42:04.253] [INFO ] [FC-DEPLOY] - Using vpcConfig: auto: fc will try to generate related vpc resources automatically
[2021-08-30T17:42:04.891] [INFO ] [VPC] - Getting vpc: fc-deploy-component-generated-vpc-cn-shenzhen
[2021-08-30T17:42:04.982] [INFO ] [VPC] - Getting vswitch: fc-deploy-component-generated-vswitch-cn-shenzhen
[2021-08-30T17:42:05.125] [INFO ] [VPC] - Getting securityGroup: fc-deploy-component-generated-securityGroup-cn-shenzhen
[2021-08-30T17:42:05.335] [INFO ] [FC-DEPLOY] - Generated vpcConfig:
securityGroupId: sg-wz92ctigpi221smc****
vSwitchId: vsw-wz9qnuult4q5g4f7n****
vpcId: vpc-wz9x9bzs0wtvjgt6n****

[2021-08-30T17:42:05.335] [INFO ] [FC-DEPLOY] - Using nasConfig: auto: fc will try to generate related nas file system automatically
[2021-08-30T17:42:21.530] [INFO ] [FC-DEPLOY] - Generated nasConfig:
groupId: 10003
mountPoints:
  - fcDir: /mnt/auto
    nasDir: /serverless-devs-tornado
    serverAddr: example.com
userId: 10003

[2021-08-30T17:42:21.532] [INFO ] [FC-DEPLOY] - Checking Function tornado exists
[2021-08-30T17:42:21.648] [WARN ] [FC-DEPLOY] - Image registry.cn-shenzhen.aliyuncs.com/web-framework/python3:0.0.1 dose not exist locally.
Maybe you need to run 's build' first if it dose not exist remotely.
[2021-08-30T17:42:21.663] [INFO ] [FC-DEPLOY] - Checking Trigger serverless-devs-tornado exists
[2021-08-30T17:42:21.766] [INFO ] [FC-DEPLOY] - Checking Trigger serverless-devs-tornado exists
[2021-08-30T17:42:21.908] [INFO ] [FC-DEPLOY] - Creating service: serverless-devs-tornado
[2021-08-30T17:42:21.909] [INFO ] [FC-DEPLOY] - Creating function: tornado
[2021-08-30T17:42:21.909] [INFO ] [FC-DEPLOY] - Creating triggers: ["serverless-devs-tornado"]
  Make service serverless-devs-tornado success.
  Make function serverless-devs-tornado/tornado success.
  Make trigger serverless-devs-tornado/tornado/serverless-devs-tornado success.
[2021-08-30T17:42:24.947] [INFO ] [FC-DEPLOY] - Checking Service serverless-devs-tornado exists
[2021-08-30T17:42:25.023] [INFO ] [FC-DEPLOY] - Checking Function tornado exists
[2021-08-30T17:42:25.157] [INFO ] [FC-DEPLOY] - Checking Trigger serverless-devs-tornado exists
[2021-08-30T17:42:25.374] [INFO ] [FC-DEPLOY] - Creating custom domain: tornado.serverless-devs-tornado.188077086902****.cn-shenzhen.fc.devsapp.net
[2021-08-30T17:42:26.033] [INFO ] [FC-DOMAIN] - Creating custom domain: tornado.serverless-devs-tornado.188077086902****.cn-shenzhen.fc.devsapp.net

There is auto config in the service: serverless-devs-tornado
[2021-08-30T17:42:26.484] [INFO ] [WEB-FRAMEWORK] - nas component get src is: ./src
Packing ...
Package complete.
  Start uploading file: /mnt/2bfb748534-tpm20-cn-shenzhen/serverless-devs-tornado/tornado/src.zip
  File uploaded successfully: /mnt/2bfb748534-tpm20-cn-shenzhen/serverless-devs-tornado/tornado/src.zip
  upload done
[2021-08-30T17:43:01.283] [INFO ] [FC-NAS] - unzipping file
[2021-08-30T17:43:02.783] [INFO ] [FC-NAS] - unzip done
  Try container acceleration
framework-test:
  region: cn-shenzhen
  serviceName: serverless-devs-tornado
  functionName: tornado
  customDomains:
    - >-
      http://tornado.serverless-devs-tornado.188077086902****.cn-shenzhen.fc.devsapp.net

Result

After the project is deployed, you can view the temporary domain name generated by Function Compute in the execution output. The temporary domain name can be used to access the newly deployed application. For example, run the following command to access the application:

curl http://tornado.serverless-devs-tornado.188077086902****.cn-shenzhen.fc.devsapp.net

Note The temporary domain name is used only for demonstration and development purposes. It is valid for a limited period of time. You must use a domain name that has obtained an Internet Content Provider (ICP) filing from Alibaba Cloud for production. For more information, see Configure a custom domain name.