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GH-50899: [CI][C++] Use OIDC instead of ACCESS_KEY and SECRET_KEY for sccache's s3 creds #51028

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GH-50899: [CI][C++] Use OIDC instead of ACCESS_KEY and SECRET_KEY for sccache's s3 creds #51028

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d5f3f20
ci: use oidc for sccache s3 short term credentials
paultiq Aug 28, 2026
a630664
ci: use SCCACHE_ENABLED env var, rather than copying AWS_ROLE_ARN to …
paultiq Sep 1, 2026
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1 change: 1 addition & 0 deletions compose.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,7 @@ x-cpp: &cpp
x-sccache: &sccache
AWS_ACCESS_KEY_ID:
AWS_SECRET_ACCESS_KEY:
AWS_SESSION_TOKEN:
SCCACHE_BUCKET:
SCCACHE_REGION:
SCCACHE_S3_KEY_PREFIX: ${SCCACHE_S3_KEY_PREFIX:-sccache}
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6 changes: 6 additions & 0 deletions dev/tasks/docker-tests/github.linux.yml
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Expand Up @@ -19,6 +19,11 @@

{{ macros.github_header() }}

permissions:
contents: read
# For OIDC token for sccache
id-token: write

jobs:
test:
name: |
Expand All @@ -31,6 +36,7 @@ jobs:
{{ macros.github_free_space()|indent }}
{{ macros.github_install_archery()|indent }}

{{ macros.github_configure_aws_credentials()|indent }}
- name: Execute Docker Build
shell: bash
env:
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16 changes: 14 additions & 2 deletions dev/tasks/macros.jinja
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Expand Up @@ -26,6 +26,7 @@ on:

env:
ARCHERY_DEBUG: 1
SCCACHE_ENABLED: {{ "${{ secrets.SCCACHE_REGION != '' }}" }}
{% endmacro %}

{%- macro github_checkout_arrow(fetch_depth=1, submodules="recursive", action_v="4") -%}
Expand Down Expand Up @@ -287,10 +288,21 @@ env:
{% endif %}
{%- endmacro -%}

{%- macro github_configure_aws_credentials() -%}
- name: Configure AWS credentials for sccache
if: env.SCCACHE_ENABLED == 'true'
uses: aws-actions/configure-aws-credentials@v6
with:
aws-region: {{ '${{ secrets.SCCACHE_REGION }}' }}
role-to-assume: {{ '${{ secrets.AWS_ROLE_ARN }}' }}
role-duration-seconds: 14400
{% endmacro %}

{% macro github_set_sccache_envvars(sccache_key_prefix = "sccache") %}
{% set sccache_vars = {
"AWS_ACCESS_KEY_ID": '${{ secrets.AWS_ACCESS_KEY_ID }}',
"AWS_SECRET_ACCESS_KEY": '${{ secrets.AWS_SECRET_ACCESS_KEY }}',
"AWS_ACCESS_KEY_ID": '${{ env.AWS_ACCESS_KEY_ID }}',
"AWS_SECRET_ACCESS_KEY": '${{ env.AWS_SECRET_ACCESS_KEY }}',
"AWS_SESSION_TOKEN": '${{ env.AWS_SESSION_TOKEN }}',
"SCCACHE_BUCKET": '${{ secrets.SCCACHE_BUCKET }}',
"SCCACHE_REGION": '${{ secrets.SCCACHE_REGION }}',
"SCCACHE_S3_KEY_PREFIX": sccache_key_prefix
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