Managing Flows in Applications

Constraints

This menu is displayed only in the sandbox environment and production environment. Operations in the sandbox environment are identical to those in the production environment. This section uses the production environment as an example.

Managing Flows

1. On the Huawei Cloud Astro Zero console, click Manage Runtime Environment of the purchased commercial instance to access the production environment.
2. Choose Maintenance from the main menu.
3. In the navigation pane, choose Global Elements > Flow.
4. On the flow page, you can view all flows created by the account in the current environment.
5. In the Operation column, you can disable, enable, or delete a flow. For details about the parameters, see Table 1.

   Table 1 Description of the flow tab page

   Parameter	Description
   Name	Name of the flow, which contains the namespace prefix, that is, the name configured during flow creation.
   Status	Compilation status of flow. Pass: The flow is passed. That is, no error or warning is reported during compilation after the flow is saved. Warning: indicates that a warning is generated during compilation after the flow is saved.
   Enable	Indicates whether flow is enabled.
   Type	Type of the flow instance. The options are as follows: Global: flow preconfigured in the system. Customization: user-defined flow.
   Last Modified By	Name of the user who modifies the flow last time.
   Last Modified At	Last time when the flow was modified.
   Operation	You can perform the following operations on flow: Click to enable the flow. Click to disable the flow. The frontend page can call the flow only after the flow is enabled. Click to delete a flow. When this button is dimmed, it cannot be deleted. The preset service templates cannot be deleted.

6. In the list displayed on the flow tab page, click a flow name. The flow details page is displayed.
   On the details page, you can switch the flow version, and run or delete the flow. For details about the parameters on the details page, see Table 2. For parameters not involved, see the GUI description.

   Table 2 Parameters on the flow details page

   Parameter	Description
   	Click this button to orchestrate the service. If the flow has multiple versions, the flow in the enabled state is executed. If multiple versions are not enabled, the flow of the latest version is executed.
   Name	Name of the flow, that is, the name configured during flow creation.
   Label	Service orchestration tag, that is, the tag configured during flow creation.
   Belonging App/BO	App or BO to which the flow belongs.
   Type	Indicates the flow type, that is, the type configured during flow creation. Autolaunched Flow: Automatically starts flow. After an API is called, the logic defined by the flow model is executed immediately. Event Trigger: Trigger flow by events. The logic defined by the flow model is executed only when an event that meets the rule is triggered.
   Enable	Indicates whether flow is enabled.
   Version	Version of the flow. If the flow has multiple versions, the flow versions in the enabled state are displayed. If multiple versions are not enabled, the latest version is displayed.
   URL	Part of the flow URL, which consists of run/FlowName. FlowName indicates the flow name. You can use the following REST APIs to orchestrate services. https://Huawei Cloud Astro Zero domain name/u-route/baas/flow/v1.0/URL value The parameters in the formula for scoring a node are as follows: Huawei Cloud Astro Zero domain name: Replace it with the actual domain name. URL value: Displayed value of URL, which consists of run/FlowName.
   Visibility	Indicates whether the flow is visible.
   Overridable	Whether a resource can be customized as a new version, imported to an add-on application, or saved as a new version if it already exists in an add-on application. This parameter is selected by default. When it is not selected, the description is as follows: When you customize a new version based on the resource, the following error message is displayed: XXX does not support the customization of a new version. Check the basic properties and confirm whether the asset can be overwritten. The resource cannot be imported to the add-on application. If the resource has been imported to the add-on application, the new version cannot be customized.
   Description	Description of the flow. Click Edit to modify the flow function. You are advised to enter the flow function.
   Input Parameter	Input parameters for flow, including the parameter name, data type, whether the parameter is a set, and description. If the flow has multiple versions, the parameters of the enabled flow are displayed. If multiple versions are not enabled, the flow parameters of the latest version are displayed.
   Output Parameters	Output parameters of flow, including the parameter name, data type, whether the parameter is a set, and description. If the flow has multiple versions, the parameters of the enabled flow are displayed. If multiple versions are not enabled, the flow parameters of the latest version are displayed.
   Version	All versions of Service Orchestration. Click in the Operation column of the corresponding version to run the flow. You can also enable, disable, or delete the flow of the corresponding version.

7. On the Service Orchestration Management page, click the Service Orchestration Running Instances tab to view the running flow instances of the account in the current environment.
   Each time a flow is run, the system generates a flow instance and assigns an instance ID to the instance to identify the instance. After the flow is complete, the system automatically deletes the instance ID.

   Table 3 Description of the Service Orchestration Running Instance Page

   Parameter	Description
   Name	Name of the flow, that is, the name configured during flow creation.
   Label	Label of a flow instance. The default value is {!$Flow.CurrentDateTime}, which is the value of display label configured when the customized flow is a new version.
   Version	Version of the running flow.
   Current Element	Diagram element where the flow instance is running.
   Instance ID	When a flow instance is running, the system allocates an instance ID to the running instance to identify the running flow instance.
   Created By	User name for running the flow instance.
   Creation Time	Time when the flow starts.
   Operation	Click . On the displayed flow tracker page, view the running details of the flow instance. Click to delete the flow instance.