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.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. Copyright (C) 2019 IBM.
.. _hello_world_resource_resolution_cba:
How to create a “Hello World” Package with CDS Designer UI? The Resource Resolution Type
========================================================================================
.. toctree::
:maxdepth: 2
.. note::
**How to Get Started with CDS Designer UI**
If you’re new to CDS Designer UI and need to get set up, the following guides may be helpful:
- :ref:`running_cds_ui_locally`
- :ref:`designer_guide`
.. note::
**NOTE:**
In order to see the latest version described below in the tutorial, we will need to use the latest cds-ui-server docker image:
nexus3.onap.org:10001/onap/ccsdk-cds-ui-server:1.1.0-STAGING-latest
Create New CBA Package
~~~~~~~~~~~~~~~~~~~~~~
In the Package List, click on the **Create Package** button.
|image1|
Define Package MetaData
~~~~~~~~~~~~~~~~~~~~~~~
In MetaData Tab:
1. Package name (Required), type **"hello_world"**
2. Package version (Required), type **"1.0.0"**
3. Package description (Required), type **"Hello World, the New CBA Package created with CDS Designer UI"**
4. Package Tags (Required), type **"tag1"** then use the **Enter** key on the keyboard
|image2|
Once you enter all fields you will be able to save your package. Click on the **Save** button and continue to define your package.
|image3|
Define Template And Mapping
~~~~~~~~~~~~~~~~~~~~~~~~~~~
In the Template & Mapping Tab:
1. Enter template name **"hello_world_template"**, then go to **Template section**
2. Choose the template type **"Velocity"**
3. Type the Template parameter **"Hello, ${image_name}!"** in the code editor
|image4|
Now, go to the **Manage Mapping section.**
|image5|
Click on the **Use Current Template Instance** button to resolve the value within the template and to auto-map it.
|image6|
Inside the **Mapping table**, change **Dictionary Source** from **default** to **input**
|image7|
Click on the **Finish** button to save the template and close it.
|image8|
After the new template is added to the **Template and Mapping list**, click on the **Save** button to save the package updates.
|image9|
Create An Action
~~~~~~~~~~~~~~~~~
From the Package information box on top, click on the **Designer Mode** button.
|image10|
Click on the **Skip to Designer Canvas** button to go directly to Designer Mode.
|image11|
Now the designer has zero action added. Let's start adding the first Action.
|image12|
Go to the left side of the designer screen and in the **ACTIONS tab**, click on the **+ New Action** button.
|image13|
Now, the first Action **Action1** is added to the **Actions list** and in the **Workflow canvas**.
|image14|
Add Resource Resolution Function To The Action
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On the left side of the designer screen, Click on the **FUNCTIONS tab** to view all the **Functions List.**
|image15|
**Drag** the function type **"component-resource-resolution"**
|image16|
**Drop** the function to the **"Action1"** Action container.
|image17|
Define Action Attributes
~~~~~~~~~~~~~~~~~~~~~~~~
Click on **Action1** from the ACTIONS tab to open **the ACTION ATTRIBUTES** section on designer screens’ right side.
|image18|
Let's customize the first action's attribute by click on the **+ Create Custom** button to open **Add Custom Attributes** modal window.
|image19|
In the **Add Custom Attributes** **Window**, and the **INPUTS tab** starts to add the first input attribute for **Action1**.
**INPUTS Tab:** Enter the required properties for the inputs’ attribute:
1. Name: **"template-prefix"**
2. Type: **"List"**
3. Required: **"True"**
|image20|
After you add the **template-prefix** input's attribute, click on In the OUTPUT Tab to create the output attribute too.
|image21|
**OUTPUTS Tab:** Enter the required properties for the output’ attribute:
1. Name: **"hello-world-output"**
2. Required: **"True"**
3. Type: **"other"**
4. Type name: **"json"**
5. Value (get_attribute): From the **Functions list**, select **"component-resource-resolution"** that will show all attributes included in this function
6. Select parameter name **"assignment-params"**
7. Click on the **Submit Attributes** button to add input and output attributes to **Actions' Attributes list**
8. Click on the **Close** button to close the modal window and go backto the designer screen.
|image22|
Now, you can see all the added attributes listed in the **ACTION ATTRIBUTES** area.
|image23|
Define Function Attributes
~~~~~~~~~~~~~~~~~~~~~~~~~~
From **ACTIONS** List, Click on the function name **"component-resource-resolution"**.
|image24|
When you click on the **component-resource-resolution** function, the **FUNCTION ATTRIBUTES** section will be open on the right side of the designers' screen.
|image25|
Now, you need to add the values of **Inputs** or **Outputs** required attributes in **the Interfaces** **section**.
- **artifact-prefix-names**:
1. Click on the **Select Templates** button
2. In the modal window that lists all templates you created, click on the **"hello_world_template"** name
3. Click on the **Add Template** button to insert it in **the Artifacts** section and to close the modal window.
|image26|
|image27|
Now, the **hello_world_template** template is listed inside the **Artifacts section.**
|image28|
From the page header and inside **the Save** **menu**, click on the **Save** button to save all the changes.
|image30|
Enrich And Deploy The CBA Package
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From the page header and inside the **Save menu**, click on the **Enrich & Deploy** button.
|image31|
Once the process is done, a confirmation message will appear.
|image32|
Test The CBA package With CDS REST API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To test the CDS hello_world package we created, we can use the REST API shown below to run the resource resolution workflow in the hello_wold
package, which will resolve the value of the "image_name" resource from the REST Call input, and will send it back to the user in the form of
"Hello, $image_name!".
**CURL Request to RUN CBA Package**
.. code-block:: bash
curl --location --request POST
'http://cds-blueprint-processor:8080/api/v1/execution-service/process'\\
--header 'Content-Type: application/json;charset=UTF-8'\\
--header 'Accept: application/json;charset=UTF-8,application/json'\\
--header 'Authorization: BasicY2NzZGthcHBzOmNjc2RrYXBwcw=='\\
--data-raw '{
"actionIdentifiers": {
"mode": "sync",
"blueprintName": "hello_world",
"blueprintVersion": "1.0.0",
"actionName": "Action1"
},
"payload": {
"Action1-request": {
"Action1-properties": {
"image_name": "Sarah Abouzainah"
}
}
},
"commonHeader": {
"subRequestId": "143748f9-3cd5-4910-81c9-a4601ff2ea58",
"requestId": "e5eb1f1e-3386-435d-b290-d49d8af8db4c",
"originatorId": "SDNC_DG"
}
}'
**CDS Response showing result of running package**
.. code-block:: json
{
"correlationUUID": null,
"commonHeader": {
"timestamp": "2020-12-13T11:43:10.993Z",
"originatorId": "SDNC_DG",
"requestId": "e5eb1f1e-3386-435d-b290-d49d8af8db4c",
"subRequestId": "143748f9-3cd5-4910-81c9-a4601ff2ea58",
"flags": null
},
"actionIdentifiers": {
"blueprintName": "hello_world",
"blueprintVersion": "1.0.0",
"actionName": "Action1",
"mode": "sync"
},
"status": {
"code": 200,
"eventType": "EVENT_COMPONENT_EXECUTED",
"timestamp": "2020-12-13T11:43:11.028Z",
"errorMessage": null,
"message": "success"
},
"payload": {
"Action1-response": {
"hello-world-output": {
"hello_world_template": "Hello, Sarah Abouzainah!"
}
}
}
}
Screenshot from POSTMAN showing how to run the hello_world package, and the CDS Response:
|image33|
Next:
-----
:ref:`Script Executor Type Hello World CBA Package <hello_world_script_executor_cba>`
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