Reading Terraform outputs from a YAML pipeline and use it in the deployment stage

Question

- task: TerraformTaskV4@4
  name: terraformOutput
  inputs:
   provider: 'azurerm'
   command: 'output'
   workingDirectory: '$(Pipeline.Workspace)'
   environmentServiceNameAzureRM: service_connection

This task is giving the output in json (not in output.json file), how can I extract this and use it in a separate stage for the app deployment?

Could you share with us whole relevant part of your workflow. This is really important to figure out proper syntax for accessing output variables. — Krzysztof Madej, Aug 07 '23 at 20:06
You're using `webapp_name` when trying to access the variable but setting `appservice_name`. — Daniel Mann, Aug 07 '23 at 20:38
Your task where you set variable is not named. This also could be the case. — Krzysztof Madej, Aug 08 '23 at 07:04

Krzysztof Madej · Answer 1 · 2023-08-08T12:15:24.203

1

To save output to json file you should use custom settings:

- task: TerraformTaskV4@4
  inputs:
    provider: 'azurerm'
    command: 'custom'
    customCommand: 'output'
    outputTo: 'file'
    fileName: 'output.json'
    environmentServiceNameAzureRM: 'rg-the-code-manual'

Then you could use this bash snippet:

    output=$(jq 'to_entries|map([.key] + [.value.value] + [.value.sensitive])' output.json | jq -c '.[]')
    for row in $(echo "${output}" ); do

        variable=$(echo "${row}" | jq -r '.[0]')
        value=$(echo "${row}" | jq -r '.[1]')
        isSecret=$(echo "${row}" | jq -r '.[2]')

        echo "Creating variable ${variable}"
        echo "##vso[task.setvariable variable=${variable};isSecret=${isSecret}]${value}"
        
    done

It will create variable and secret variable based on outputs you have.

edited Aug 08 '23 at 12:15

answered Aug 08 '23 at 08:48

Krzysztof Madej

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The task TerraformTaskV4@4 doesn't give the command option to generate the file in json, but it is printing the whole result as json. – devopsseeker Aug 08 '23 at 09:04
[Here](https://github.com/microsoft/azure-pipelines-terraform/tree/main/Tasks/TerraformTask/TerraformTaskV4) is written than `output` is supported. – Krzysztof Madej Aug 08 '23 at 09:27
Yes, but it gives the output in the console than in a json file. – devopsseeker Aug 08 '23 at 10:23
You need to use `custom` and then you can use output and save it as file. – Krzysztof Madej Aug 08 '23 at 11:19

Reading Terraform outputs from a YAML pipeline and use it in the deployment stage

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