Examples of variables

The following examples show how to define and reference variables in the workflow definition file.

For more information about variables, see Using variables in workflows.

Example: Defining a variable using the Inputs property

The following example shows you how to define two variables, VAR1 and VAR2, in an Inputs section.

Actions:
  Build:
    Identifier: aws/build@v1
    Inputs:
      Variables:
      - Name: VAR1
        Value: "My variable 1"
      - Name: VAR2
        Value: "My variable 2"

Example: Defining a variable using the Steps property

The following example shows you how to define a DATE variable in the Steps section explicitly.

Actions:
  Build:
    Identifier: aws/build@v1
    Configuration:    
      Steps:
        - Run: DATE=$(date +%m-%d-%y)

Example: Exporting a variable using the Outputs property

The following example shows you how to define two variables, REPOSITORY-URI and TIMESTAMP, and export them using the Outputs section.

Actions:
  Build:
    Identifier: aws/build@v1
    Inputs:
      Variables:
        - Name: REPOSITORY-URI
          Value: 111122223333.dkr.ecr.us-east-2.amazonaws.com/codecatalyst-ecs-image-repo
    Configuration:
      Steps:
        - Run: TIMESTAMP=$(date +%m-%d-%y-%H-%m-%s) 
    Outputs:
      Variables:
        - REPOSITORY-URI
        - TIMESTAMP

Example: Referencing a variable defined in the same action

The following example shows you how to specify a VAR1 variable in MyBuildAction, and then reference it in the same action using $VAR1.

Actions:
  MyBuildAction:
    Identifier: aws/build@v1
    Inputs:
      Variables:
        - Name: VAR1
          Value: my-value
    Configuration:
      Steps:
        - Run: $VAR1

Example: Referencing a variable defined in another action

The following example shows you how to specify a TIMESTAMP variable in BuildActionA, export it using the Outputs property, and then reference it in BuildActionB using ${BuildActionA.TIMESTAMP}.

Actions:
  BuildActionA:
    Identifier: aws/build@v1
    Configuration:    
      Steps:
        - Run: TIMESTAMP=$(date +%m-%d-%y-%H-%m-%s) 
    Outputs:
      Variables:
        - TIMESTAMP
  BuildActionB:
    Identifier: aws/build@v1
    Configuration:
      Steps:
        - Run: docker build -t my-ecr-repo/image-repo:latest .      
        - Run: docker tag my-ecr-repo/image-repo:${BuildActionA.TIMESTAMP}
        
        # Specifying just '$TIMESTAMP' here will not work 
        # because TIMESTAMP is not a variable 
        # in the BuildActionB action.

Example: Referencing a secret

The following example shows you how to reference a my-password secret. The my-password is the secret's key. This secret's key and corresponding password value must be specified on the Secrets page of the CodeCatalyst console prior to being used in the workflow definition file. For more information, see Masking data using secrets.

Actions:
  BuildActionA:
    Identifier: aws/build@v1
    Configuration:    
      Steps:
        - Run: curl -u LiJuan:${Secrets.my-password} https://example.com