Aliyun Function Compute

Lithops with Aliyun Function Compute as serverless compute backend.

Installation

1. Install Alibaba Cloud backend dependencies:

python3 -m pip install lithops[aliyun]

1. Access to your console and activate your Functions service instance.

Configuration

1. Access to your Function Compute dashboard, choose your preferred region, and copy the public endpoint.

2. Access to the Resource Access Management (RAM) Roles dashboard, and create a new Role that contains the AliyunOSSFullAccess permission. Alternatively you can use an already created Role that contains the AliyunOSSFullAccess permission.

3. Edit your Lithops config and add the following keys:

  lithops:
      backend : aliyun_fc

  aliyun:
    access_key_id: <ACCESS_KEY_ID>
    access_key_secret: <ACCESS_KEY_SECRET>

  aliyun_fc:
      public_endpoint : <PUBLIC_ENDPOINT>
      role_arn: <ROLE_ARN>

4. (optional) By default Lithops will automatically create a new service in your Function Compute account. For this purpose your user must have List and Create permissions to Function Compute. Alternatively, you can create a new service through the dashboard (or use one already created), assign the Role created in the previous step (Accessing to service configuration –> Modify Configuration –> Role Config), and configure the service entry in the aliyun_cf config section.

Summary of configuration keys for Aliyun

Group	Key	Default	Mandatory	Additional info
aliyun	access_key_id		yes	Access Key Id
aliyun	access_key_secret		yes	Access Key Secret

Summary of configuration keys for Alibaba Functions Compute:

Group	Key	Default	Mandatory	Additional info
aliyun_fc	public_endpoint		yes	public endpoint (URL) to the service. OSS and FC endpoints are different.
aliyun_fc	role_arn		yes	Role ARN. For example: acs:ram::5244532493961771:role/aliyunfclogexecutionrole
aliyun_fc	service		no	Service name
aliyun_fc	max_workers	300	no	Max number of workers. Alibaba limits the number of parallel workers to 300
aliyun_fc	worker_processes	1	no	Number of Lithops processes within a given worker. This can be used to parallelize function activations within a worker
aliyun_fc	runtime		no	Runtime name you built and deployed using the lithops client
aliyun_fc	runtime_memory	256	no	Memory limit in MB. Default 256MB
aliyun_fc	runtime_timeout	300	no	Runtime timeout in seconds. Default 5 minutes
aliyun_fc	invoke_pool_threads	300	no	Number of concurrent threads used for invocation

Test Lithops

Once you have your compute and storage backends configured, you can run a hello world function with:

lithops test -b aliyun_fc -s aliyun_oss

Viewing the execution logs

You can view the function executions logs in your local machine using the lithops client:

lithops logs poll