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Add usage on how to use Cloudformation stack's Ouputs export value

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Bill Wang 2017-11-13 12:34:10 +11:00
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docs/providers/aws/guide/variables.md
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@ -155,6 +155,26 @@ functions:
```
In that case, the framework will fetch the values of those `functionPrefix` outputs from the provided stack names and populate your variables. There are many use cases for this functionality and it allows your service to communicate with other services/stacks.
You can reference [CloudFormation stack outputs export values](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/outputs-section-structure.html) as well. For example:
```
# Make sure you set export value in StackA.
Outputs:
DynamoDbTable:
Value:
"Ref": DynamoDbTable
Export:
Name: DynamoDbTable-${self:custom.stage}
# Then you can reference the export name in StackB
provider:
environment:
Table:
'Fn::ImportValue': 'DynamoDbTable-${self:custom.stage}'
```
## Referencing S3 Objects
You can reference S3 values as the source of your variables to use in your service with the `s3:bucketName/key` syntax. For example:
```yml