{Core} Proof-of-Concept: Support OIDC token refreshing on GitHub Actions #28778
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️✔️AzureCLI-FullTest
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azure-client-tools-bot-prd
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added this to the May 2024 (2024-05-21)❗ Breaking change release ❗ milestone
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Hi @jiasli, |
️✔️AzureCLI-BreakingChangeTest
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Support OIDC token refreshing on GitHub Actions |
microsoft-github-policy-service
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jiasli
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Apr 22, 2024
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| token = os.environ['ACTIONS_ID_TOKEN_REQUEST_TOKEN'] | ||
| url = os.environ['ACTIONS_ID_TOKEN_REQUEST_URL'] |
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Use this workflow file to collect environment variables:
on: [push, workflow_dispatch]
name: AzureCLISample
permissions:
id-token: write
contents: read
jobs:
build-and-deploy:
runs-on: ubuntu-latest
steps:
- name: Azure CLI script
uses: azure/CLI@v1
with:
azcliversion: latest
inlineScript: |
set -ex
env | base64
jiasli
modified the milestones:
May 2024 (2024-05-21)❗ Breaking change release ❗,
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Fix #28708
Related command
az loginDescription
MSAL reserved an undocumented interface which allows using a callback function to get
client_assertion, instead of supplying a raw OIDC token.https://github.com/AzureAD/microsoft-authentication-library-for-python/blob/a8476fbe665356aae60e65296337d9eff86d0d66/msal/oauth2cli/oauth2.py#L198-L201
As a Proof-of-Concept, this PR uses this interface to achieve OIDC token refreshing.
Some interesting finds:
When a task is run on 2024-04-18 10:35:31, the
ACTIONS_ID_TOKEN_REQUEST_TOKENhas below claims:This means the token starts 10min before the task and expires after 6h10min. After the token expires, no ID token can be retrieved. Therefore, even if we can refresh ID token, the maximum execution time of a task is around 6h.
References:
AADSTS700024after 60 minutes #28708 (comment)ACTIONS_ID_TOKEN_REQUEST_TOKENandACTIONS_RUNTIME_TOKENgithub/docs#32573Testing Guide
[Only for development and debugging]
env | base64to bypass GitHub Actions' credential redaction. Then decode it with VS Code.sleep 1800to keep the task alive, otherwise, the OIDC token request will be rejected after the task finishes.