5. Vault Code Examples and Explanation

To open the data vault, we use the open_vault function.

with open_vault('data') as vault: 
    # Get, insert, update, upsert, or delete vault data

Get All Customers

with open_vault('data') as vault:
    customers = vault.get('customers')

    if customers:
        output.payload = customers
    else:
        output.payload = "There are no customers in the data vault."

To retrieve the customers list in the data vault, we use the vault method get. Afterwards, we check if the customers list is empty. If it is not empty, we assign output.payload the customers list. Otherwise, we assign output.payload a confirmation message that there are no customers in the list.

Get Customer By Id

with open_vault('data') as vault:
    customers = vault.get('customers')
    customers = [customer for customer in customers if customer.id == input.path.id]

    if customers:
        output.payload = customers[0]
    else:
        output.payload = f'There are no customers with an id of: {input.path.id}'

To get a customer by Id in the data vault, we first use the vault method get to retrieve the customers list. Afterwards, we use a list comprehension to extract the customer from the customers list that has an Id that matches the id in input.path. At the end, we assign output.payload the customer's information in the form of a dictionary object or an error message if the customer was found.

Add a Customer

with open_vault('data') as vault:
    customers = vault.get('customers')
    customers.append(insert_customer.response.payload)
    vault.update('customers', customers)
    output.payload = { "id": insert_customer.response.payload.id }

To add a customer in the data vault, we first use the vault method get to retrieve the customers list. Afterwards, we append response.payload of insert_customer to the customers list and use the vault method update to save our changes to the customers list. At the end, we assign output.payload the Id of the new customer.

Update Customer

with open_vault('data') as vault:
    customers = vault.get('customers')
    customer = [customer for customer in customers if customer.id == input.path.id]

    if customer:
        customer[0].update(modify_customer.response.payload)
        vault.update('customers', customers)
        output.payload = customer[0]
    else:
        output.payload = f'There are no customers with an id of: {input.path.id}'

To update a customer in the data vault, we first use the vault method get to retrieve the customers list. Afterwards, we search for the customer via their Id. If the customer is found, we update the customer's information from response.payload of the service request modify_customer. At the end, we assign output.payload the customer's information in the form of dictionary object or an error message if the customer was not found.

Delete Customer

with open_vault('data') as vault:
    customers = vault.get('customers')
    previous_length = len(customers)
    customers = [customer for customer in customers if customer.id != input.path.id]

    if previous_length != len(customers):
        vault.update('customers', customers)
        output.payload = f"The customer with an id of {input.path.id} has been deleted."
    else:
        output.payload = f'There are no customers with an id of: {input.path.id}'

To delete a customer in the data vault, we first use the vault method get to retrieve the customers list. Afterwards, we record the current length of the customers list and we use a list comprehension to remove the customer from the customers list that has an Id that matches the id in input.path. If the length of the customers list has changed, we use the vault method update to save our changes to the customers list. At the end, we assign output.payload a confirmation message that the customer was deleted or an error message if the customer was not found.