Stack output resolver

Stack output resolver reads the parameter value from a stack output of another stack configured within the same Takomo project. The source stack automatically becomes the target stack's dependency. Takomo reads the output value using the credentials associated with the source stack.

If you need to read outputs of stacks that are not configured in the same Takomo project, you can use the external stack output resolver.

Properties

Here are the properties of the stack output resolver:

Key	Required	Type	Description
resolver	yes	string	Resolver name, this must be stack-output.
stack	yes	string	Stack path of the source stack. Can be an absolute or a relative stack path.
output	yes	string	Name of the stack output whose value is read.
confidential	no	boolean	Conceal the resolved parameter value from logs, defaults to false
immutable	no	boolean	Mark the parameter as immutable, defaults to false

Example

Say, we have two stacks: vpc.yml and security-groups.yml. The former creates a VPC and exposes its id in the stack outputs with a name VpcId, and the latter uses the VPC id to create some security groups.

The directory structure looks like this:

.
├─ stacks
│  ├─ vpc.yml
│  └─ security-groups.yml
└─ templates
   ├─ vpc.yml
   └─ security-groups.yml

In security-groups.yml stack configuration we use the stack-output resolver to read the value for the VpcId parameter like so:

stacks/security-groups.yml

parameters:
  VpcId:
    resolver: stack-output
    stack: /vpc.yml
    output: MyVpcId