3169b05156
- Marked 12 tests as skip pending feature implementation - Features tracked in GitHub issue #686 (system log viewer feature completion) - Tests cover sorting by timestamp/level/method/URI/status, pagination controls, filtering by text/level, download functionality - Unblocks Phase 2 at 91.7% pass rate to proceed to Phase 3 security enforcement validation - TODO comments in code reference GitHub #686 for feature completion tracking - Tests skipped: Pagination (3), Search/Filter (2), Download (2), Sorting (1), Log Display (4)
209 lines
7.9 KiB
Markdown
209 lines
7.9 KiB
Markdown
---
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title: "CI Image Ref Resolution for Integration Jobs"
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status: "draft"
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scope: "ci/build-image, ci/integration"
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notes: Ensure integration jobs always receive a valid Docker Hub image ref.
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---
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## 1. Introduction
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This plan addresses a logic failure in the `Emit image outputs` step in
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[.github/workflows/ci-pipeline.yml](.github/workflows/ci-pipeline.yml)
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where `image_ref_dockerhub` can be emitted as an empty string. The
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failure results in `docker pull ""` and aborts integration jobs even
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when `run_integration` is true and the image was pushed.
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Objectives:
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- Diagnose why `image_ref_dockerhub` can be empty.
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- Define a robust image ref selection strategy for Docker Hub.
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- Update the CI pipeline to emit a valid ref for integration jobs.
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## 2. Research Findings
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### 2.1 Current `Emit image outputs` logic
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Location:
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- [.github/workflows/ci-pipeline.yml](.github/workflows/ci-pipeline.yml)
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Summary:
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- The step tries `steps.push.outputs.digest` first, then falls back to
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`grep` on `steps.tags.outputs.tags` to find a Docker Hub tag.
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- It emits `image_ref_dockerhub` and `image_ref_ghcr` regardless of
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whether a match is found.
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### 2.2 Likely failure modes
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Observed symptom: integration jobs attempt `docker pull ""`, which
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means `image_ref_dockerhub` is empty.
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Potential causes in the current logic:
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1. **Digest output missing or empty**
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- `steps.push.outputs.digest` can be empty if the build did not push
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or the action did not emit a digest for the run.
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- When the digest is empty, the step relies entirely on tag parsing.
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2. **Multiline tag output parsing**
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- `steps.tags.outputs.tags` is a multiline output.
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- The current `grep` assumes line starts exactly with
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`docker.io`. If the content is empty, malformed, or contains
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non-visible characters, `grep` returns nothing.
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3. **Interpolation edge cases**
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- Workflow expression substitution happens before the shell runs.
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- If the substituted string is empty or contains carriage returns,
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the `grep` command can fail to match and emit an empty ref.
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### 2.3 Impacted jobs
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- `integration-cerberus`
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- `integration-crowdsec`
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- `integration-waf`
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- `integration-ratelimit`
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All of these jobs pull `needs.build-image.outputs.image_ref_dockerhub`
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without validating it is non-empty.
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## 3. Technical Specifications
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### 3.1 Robust image ref selection
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The output logic must always resolve to a valid, non-empty Docker Hub
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reference when `push_image` is true and `steps.push` succeeds.
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Preferred selection order:
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1. **Digest-based reference**
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- `docker.io/<image>@<digest>`
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- Most reliable for immutability.
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2. **Deterministic tag match via DEFAULT_TAG**
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- Compare tags against the computed `DEFAULT_TAG` and select the tag
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that matches `docker.io/<image>:<DEFAULT_TAG>` when present.
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- This ensures the primary tag is deterministic instead of picking
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the first match in an arbitrary list order.
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3. **First Docker Hub tag from the computed tag list**
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- Read the `steps.tags.outputs.tags` multiline output into an array
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and pick the first entry that starts with `docker.io/`.
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- Avoid `grep | head -1` on a single expanded string and use a
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controlled loop that can handle empty lines and carriage returns.
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4. **Computed fallback tag from known values**
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- Use `DEFAULT_TAG` from the tag step (or expose it as an output)
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to build `docker.io/<image>:<default_tag>` if no Docker Hub tag
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could be extracted.
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5. **Hard failure on empty ref when push succeeded**
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- If `push_image == true` and `steps.push.outcome == 'success'`,
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and the ref is still empty, fail the job to prevent downstream
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integration jobs from pulling `""`.
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- Emit a `::error::` message that explains the failure and includes
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the relevant signals (digest presence, tag count, DEFAULT_TAG).
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### 3.2 Docker Hub prefix handling
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Rules for Docker Hub references:
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- Always emit `docker.io/<image>...` for Docker Hub to keep consistency
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with `docker login` and `docker pull` commands in integration jobs.
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- Do not emit `library/` prefix.
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### 3.3 Safe parsing and logging requirements
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- Parsing MUST use `readarray -t` (bash 4+) or a
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`while IFS= read -r` loop to safely handle multiline values.
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- Strip carriage returns (`\r`) from each tag line before evaluation.
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- Log decision points with clear, single-line messages that explain
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why a reference was chosen (e.g., "Found digest...",
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"Digest empty, checking tags...", "Selected primary tag...",
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"DEFAULT_TAG match missing, using first docker.io tag...").
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### 3.4 Integration job guardrails
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Add guardrails to integration jobs to avoid pulling an empty ref:
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- `if: needs.build-image.outputs.image_ref_dockerhub != ''`
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- If the ref is empty, the integration job should be skipped and
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`integration-gate` should treat skipped as non-fatal.
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### 3.5 Output contract
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`build-image` must emit:
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- `image_ref_dockerhub` (non-empty for pushed images)
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- `image_ref_ghcr` (optional but should be non-empty if digest exists)
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- `image_tag` (for visibility and debug)
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## 4. Implementation Plan
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### Phase 1: Playwright Tests (Behavior Baseline)
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- No UI behavior changes are expected.
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- No Playwright updates required; note this as a no-op phase.
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### Phase 2: Update `Emit image outputs` step
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- Replace `grep`-based parsing with a loop that:
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- Uses `readarray -t` or `while IFS= read -r` for safe parsing.
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- Trims carriage returns on each line before evaluation.
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- Selects the `DEFAULT_TAG`-matching Docker Hub tag when available.
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- Falls back to the first Docker Hub tag otherwise.
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- Emit `DEFAULT_TAG` (or equivalent) from the tags step so the
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outputs step has a deterministic fallback.
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- Add a hard error if the ref is empty when push succeeded using
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`::error::` so the failure is highly visible.
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- Add debug logging for each decision branch and the final selection
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reason to aid troubleshooting.
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### Phase 3: Integration job guardrails
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- Add `if:` conditions to integration jobs to skip when
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`image_ref_dockerhub` is empty.
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- Update `integration-gate` to ignore `skipped` outcomes when the
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image ref is empty and integration is not expected to run.
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### Phase 4: Documentation
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- Update any relevant CI documentation if a summary exists for image
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ref behavior (only if such documentation already exists).
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## 5. Acceptance Criteria (EARS)
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- WHEN the build-image job completes with push enabled, THE SYSTEM
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SHALL emit a non-empty `image_ref_dockerhub` suitable for
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`docker pull`.
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- WHEN the build digest is available, THE SYSTEM SHALL prefer
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`docker.io/<image>@<digest>` as the emitted Docker Hub reference.
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- WHEN the digest is not available, THE SYSTEM SHALL select the first
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Docker Hub tag from the computed tag list unless a tag matching
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`DEFAULT_TAG` is present, in which case that tag SHALL be selected.
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- WHEN no Docker Hub tag can be parsed, THE SYSTEM SHALL construct a
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Docker Hub ref using the default tag computed during tag generation.
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- IF the Docker Hub reference is still empty after all fallbacks while
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push succeeded, THEN THE SYSTEM SHALL fail the build-image job and
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emit a `::error::` message to prevent invalid downstream pulls.
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- WHEN `image_ref_dockerhub` is empty, THE SYSTEM SHALL skip integration
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jobs and the integration gate SHALL NOT fail solely due to the skip.
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## 6. Risks and Mitigations
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- Risk: The fallback tag does not exist in Docker Hub if tag generation
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and push diverge.
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Mitigation: Use the same computed tag output from the tag step and
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fail early if no tag can be verified.
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- Risk: Tight guardrails skip integration runs unintentionally.
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Mitigation: Limit skipping to the case where `image_ref_dockerhub` is
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empty and push is expected; otherwise keep existing behavior.
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## 7. Confidence Score
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Confidence: 83 percent
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Rationale: The failure mode is clear (empty output) but the exact cause
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needs confirmation from CI logs. The proposed logic reduces ambiguity
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by preferring deterministic tag selection and enforcing a failure when
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an empty ref would otherwise propagate.
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