CloudFlow：Normal integration

Procedure

This sample procedure describes how CloudFlow is integrated with Elastic Compute Service by calling the DescribeInstances API operation of ECS.

1. Log on to the CloudFlow console. In the top navigation bar, select a region.

2. On the Workflows page, click Create Workflow.

3. In the Create Workflow dialog box, select Use Blank Canvas, select a workflow mode in the Workflow mode section, configure the Workflow Name and Workflow description parameters, and then click Create.

4. On the Workflow Studio graphical interface, click the CloudFlow Studio tab to configure the Timeout Period parameter and click the Configure Workflow tab to configure the Execution Role parameter for the workflow.

   Note

   If you have created Resource Access Management (RAM) roles, select an existing RAM role.

   The first time you use CloudFlow, click Create Role to create a RAM role and grant required permissions to the RAM role. For more information, see the "Create an execution role" section of the Create execution roles topic.

5. Enter DescribeInstances in the search box of the Actions tab in the state view section of the Workflow Studio graphical interface, find the DescribeInstances API operation of ECS, and then drag the API operation to the flowchart. Configure the Basic Settings, Input Settings, Output Settings, and Troubleshooting parameters in the parameter configuration section on the right side of the page.

   For information about how to configure the parameters, see the "Procedure" section of the Create a workflow based on a blank canvas topic.

   You can also click YAML in the upper-right corner and then specify the API operation that you want to call in the YAML script. Example:

   Type: StateMachine
   Name: test
   SpecVersion: v1
   Timeout: 600
   StartAt: DescribeInstances
   States:
     - Type: Task
       Name: DescribeInstances
       Action: ECS:DescribeInstances
       TaskMode: RequestComplete
       Parameters:
         RegionId: cn-hangzhou
         VpcId: vpc-bp11y195luy47h8****
         VSwitchId: vsw-bp1wb297ekw7xyh****
       End: true
   

   Description of parameters in the preceding code:

   • Action: the name of the API operation that you want to call. In this example, the value of this parameter is ECS:DescribeInstances. This operation is used to query information about one or more ECS instances. To call the DescribeInstances API operation of ECS, you must grant the AliyunECSReadOnlyAccess permission to the execution role of the workflow.

   • TaskMode: the service integration mode that is used by this workflow. For more information, see the "Integration modes" section of the Overview topic.

   • Parameters: the parameters that are configured for the integrated service. The configurations of Parameters vary based on the integrated service.

6. Click Execute in the upper-right corner. In the Execute Workflow panel, configure the Execution Name and Input of Execution parameters, and then click OK.

   After the workflow is executed, you can view the information about the execution event on the Execution Details page.

Alibaba Cloud services with which CloudFlow can be integrated through normal integration

CloudFlow can be integrated with most Alibaba Cloud services by calling API operations of the services. The following table describes the Alibaba Cloud services with which CloudFlow can be integrated through normal integration.

References

• For information about the Workflow Studio interface, see Interface Overview.

• For information about the standard mode and express mode of CloudFlow, see Standard mode and express mode.