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[TRTLLMINF-188][infra] Require approval for broad post-merge bot runs #16318
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chzblych
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NVIDIA:main
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chzblych:trtllminf-188-post-merge-approval
Jul 19, 2026
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b6d943f
ci: guard post-merge approval labels
chzblych 692fc71
ci: use shared TRT-LLM agent token
chzblych 57be89f
ci: prevent stale approval cleanup
chzblych cd61229
docs: explain post-merge workflow trigger safety
chzblych 36abf7b
docs: clarify post-merge workflow API usage
chzblych 488d7f7
test: remove unexecuted workflow harness
chzblych ebde870
ci: harden approval cleanup on cancellation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| # SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| name: Guard Post-Merge Approval Label | ||
|
|
||
| on: | ||
| # Intentional: this runs static default-branch API logic only. It never checks | ||
| # out or executes PR code; it uses GitHub APIs to validate membership and | ||
| # manage this PR's approval label/comment. | ||
| pull_request_target: | ||
| types: [labeled] | ||
|
|
||
| permissions: | ||
| contents: read | ||
| pull-requests: write | ||
|
|
||
| jobs: | ||
| guard-post-merge-approval: | ||
| concurrency: | ||
| group: post-merge-approval-${{ github.event.pull_request.number }} | ||
| cancel-in-progress: false | ||
| # Keep a started job eligible to reach fail-closed cleanup after cancellation. | ||
| if: >- | ||
| always() && | ||
| github.repository == 'NVIDIA/TensorRT-LLM' && | ||
| github.event.action == 'labeled' && | ||
| github.event.label.name == 'ci: post-merge approved' | ||
| runs-on: ubuntu-latest | ||
| timeout-minutes: 5 | ||
| steps: | ||
| - name: Validate post-merge approver | ||
| id: validate | ||
| if: github.event.action == 'labeled' | ||
| uses: actions/github-script@v8 | ||
| with: | ||
| github-token: ${{ secrets.TRTLLM_AGENT_SHARED_TOKEN }} | ||
| result-encoding: string | ||
| script: | | ||
| const approvalLabel = 'ci: post-merge approved'; | ||
| const owner = context.repo.owner; | ||
| const repo = context.repo.repo; | ||
| const issueNumber = context.payload.pull_request.number; | ||
| let actor = context.payload.sender?.login || context.actor; | ||
| let labelEventId = ''; | ||
| let timelineVerified = false; | ||
|
|
||
| try { | ||
| const events = await github.paginate( | ||
| github.rest.issues.listEventsForTimeline, | ||
| { owner, repo, issue_number: issueNumber, per_page: 100 } | ||
| ); | ||
| const latestApprovalEvent = events | ||
| .filter( | ||
| (event) => | ||
| event.event === 'labeled' && | ||
| event.label?.name?.toLowerCase() === approvalLabel.toLowerCase() | ||
| ) | ||
| .at(-1); | ||
| if (latestApprovalEvent) { | ||
| actor = latestApprovalEvent.actor?.login || actor; | ||
| labelEventId = String(latestApprovalEvent.id); | ||
| timelineVerified = true; | ||
| } else { | ||
| core.warning('Could not identify the latest post-merge approval event.'); | ||
| } | ||
| } catch (error) { | ||
| core.warning( | ||
| 'Could not read the latest post-merge approval event: ' + error.message | ||
| ); | ||
| } | ||
|
|
||
| core.setOutput('validated_actor', actor); | ||
| core.setOutput('label_event_id', labelEventId); | ||
| if (!timelineVerified) { | ||
| return 'false'; | ||
| } | ||
| try { | ||
| const response = await github.request( | ||
| 'GET /orgs/{org}/teams/{team_slug}/memberships/{username}', | ||
| { | ||
| org: 'NVIDIA', | ||
| team_slug: 'trt-llm-ci-approvers', | ||
| username: actor, | ||
| } | ||
| ); | ||
| const authorized = response.data.state === 'active'; | ||
| console.log( | ||
| actor + ' active membership in NVIDIA/trt-llm-ci-approvers: ' + authorized | ||
| ); | ||
| return authorized ? 'true' : 'false'; | ||
| } catch (error) { | ||
| if (error.status === 404) { | ||
| console.log( | ||
| actor + ' is not an active member of NVIDIA/trt-llm-ci-approvers.' | ||
| ); | ||
| } else { | ||
| core.warning( | ||
| 'Could not verify post-merge approver ' + actor + ': ' + error.message | ||
| ); | ||
| } | ||
| return 'false'; | ||
| } | ||
|
|
||
| - name: Clear unauthorized post-merge approval | ||
| # Let a started job attempt fail-closed cleanup after normal cancellation. | ||
| if: always() && steps.validate.outputs.result != 'true' | ||
| uses: actions/github-script@v8 | ||
| env: | ||
| VALIDATED_ACTOR: ${{ steps.validate.outputs.validated_actor }} | ||
| VALIDATED_LABEL_EVENT_ID: ${{ steps.validate.outputs.label_event_id }} | ||
| with: | ||
| github-token: ${{ secrets.GITHUB_TOKEN }} | ||
| script: | | ||
| const approvalLabel = 'ci: post-merge approved'; | ||
| const actor = | ||
| process.env.VALIDATED_ACTOR || | ||
| context.payload.sender?.login || | ||
| context.actor; | ||
| const validatedEventId = process.env.VALIDATED_LABEL_EVENT_ID || ''; | ||
| const owner = context.repo.owner; | ||
| const repo = context.repo.repo; | ||
| const issueNumber = context.payload.pull_request.number; | ||
|
|
||
| try { | ||
| const pullRequest = await github.rest.pulls.get({ | ||
| owner, | ||
| repo, | ||
| pull_number: issueNumber, | ||
| }); | ||
| const labelIsPresent = pullRequest.data.labels.some( | ||
| (label) => | ||
| label.name?.toLowerCase() === approvalLabel.toLowerCase() | ||
| ); | ||
| if (!labelIsPresent) { | ||
| console.log('Post-merge approval label is already absent; no cleanup needed.'); | ||
| return; | ||
| } | ||
| } catch (error) { | ||
| core.warning( | ||
| 'Could not read the current post-merge approval label state; continuing validation: ' + | ||
| error.message | ||
| ); | ||
| } | ||
|
|
||
| try { | ||
| const events = await github.paginate( | ||
| github.rest.issues.listEventsForTimeline, | ||
| { owner, repo, issue_number: issueNumber, per_page: 100 } | ||
| ); | ||
| const latestApprovalEvent = events | ||
| .filter( | ||
| (event) => | ||
| event.event === 'labeled' && | ||
| event.label?.name?.toLowerCase() === approvalLabel.toLowerCase() | ||
| ) | ||
| .at(-1); | ||
| const latestEventId = latestApprovalEvent | ||
| ? String(latestApprovalEvent.id) | ||
| : ''; | ||
| const latestActor = latestApprovalEvent?.actor?.login || ''; | ||
| if (!latestApprovalEvent) { | ||
| core.warning( | ||
| 'Could not identify the latest post-merge approval event; removing the label to fail closed.' | ||
| ); | ||
| } else if (!latestActor) { | ||
| core.warning( | ||
| 'Could not identify the latest post-merge approval actor; removing the label to fail closed.' | ||
| ); | ||
| } else if (!validatedEventId) { | ||
| core.warning( | ||
| 'The validation run did not bind an approval event; removing the label to fail closed.' | ||
| ); | ||
| } else if ( | ||
| latestEventId !== validatedEventId || | ||
| latestActor !== actor | ||
| ) { | ||
| console.log( | ||
| 'A newer post-merge approval event was found; leaving it for its own validation run.' | ||
| ); | ||
| return; | ||
| } | ||
| } catch (error) { | ||
| core.warning( | ||
| 'Could not re-check the latest post-merge approval event; removing the label to fail closed: ' + | ||
| error.message | ||
| ); | ||
| } | ||
|
|
||
| try { | ||
| await github.rest.issues.removeLabel({ | ||
| owner, | ||
| repo, | ||
| issue_number: issueNumber, | ||
| name: approvalLabel, | ||
| }); | ||
| } catch (error) { | ||
| if (error.status !== 404) { | ||
| throw error; | ||
| } | ||
| } | ||
|
|
||
| await github.rest.issues.createComment({ | ||
| owner, | ||
| repo, | ||
| issue_number: issueNumber, | ||
| body: | ||
| 'Removed the "' + approvalLabel + '" label because @' + actor + | ||
| ' could not be verified as an active member of ' + | ||
| 'NVIDIA/trt-llm-ci-approvers. Ask a member of that team to apply it.', | ||
| }); | ||
|
chzblych marked this conversation as resolved.
|
||
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