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Round 2 remediation for the read-back verification in issue-comment.sh and pr-review.sh. BLOCKER A (invocation attribution): id-above-boundary + content/state match only proves temporal ordering — a concurrent write from a different identity could satisfy it while this tea invocation created nothing. Both wrappers now resolve the acting identity once via curl GET /api/v1/user and additionally require the accepted record's author login to equal that identity. Residual same-identity same-body/state concurrency is documented in-code (tea 0.11.1 emits no reliable created-record id to close it further). BLOCKER B (pagination): the comments and reviews list reads now walk every page (?limit=&page=1,2,… until a short/empty page) for both the pre-write boundary and the post-write read-back, so a record beyond page 1 is still found. Adds regressions: concurrent different-identity write fails closed (comments and reviews); a matching review beyond page 1 is still found. README updated. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
556 lines
22 KiB
Bash
Executable File
556 lines
22 KiB
Bash
Executable File
#!/bin/bash
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# pr-review.sh - Review a pull request on GitHub or Gitea
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# Usage: pr-review.sh -n <pr_number> -a <action> [-c <comment>] [--login <name>]
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#
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# --login override: approve/request-changes on Gitea invoke `tea pr
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# approve`/`tea pr reject` with a `--login` resolved from the local tea
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# login list for this repo's host (get_gitea_login_for_host). Pass
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# --login <name> to override that default for this invocation only. The
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# override is appended to the tea command line AFTER the detected default
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# (get_gitea_repo_args()-equivalent resolution happens first), because tea
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# honors only the LAST `--login` flag on its command line — a flag placed
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# before the default would be silently clobbered by it. The `comment`
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# action does not shell out to `tea` at all (see gitea_post_verified_comment
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# below), so --login has no effect on it.
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set -e
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck source=packages/mosaic/framework/tools/git/detect-platform.sh
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source "$SCRIPT_DIR/detect-platform.sh"
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# Parse arguments
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PR_NUMBER=""
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ACTION=""
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COMMENT=""
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LOGIN_OVERRIDE=""
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while [[ $# -gt 0 ]]; do
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case $1 in
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-n|--number)
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PR_NUMBER="$2"
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shift 2
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;;
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-a|--action)
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ACTION="$2"
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shift 2
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;;
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-c|--comment)
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COMMENT="$2"
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shift 2
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;;
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-l|--login)
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LOGIN_OVERRIDE="$2"
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shift 2
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;;
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-h|--help)
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echo "Usage: pr-review.sh -n <pr_number> -a <action> [-c <comment>] [--login <name>]"
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echo ""
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echo "Options:"
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echo " -n, --number PR number (required)"
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echo " -a, --action Review action: approve, request-changes, comment (required)"
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echo " -c, --comment Review comment (required for request-changes)"
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echo " -l, --login Override the detected Gitea tea login (approve/request-changes only)"
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echo " -h, --help Show this help"
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exit 0
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;;
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*)
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echo "Unknown option: $1"
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exit 1
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;;
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esac
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done
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if [[ -z "$PR_NUMBER" ]]; then
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echo "Error: PR number is required (-n)"
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exit 1
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fi
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if [[ -z "$ACTION" ]]; then
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echo "Error: Action is required (-a): approve, request-changes, comment"
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exit 1
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fi
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detect_platform >/dev/null
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# Post a review comment body to a Gitea PR via the supported comments REST API
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# and verify it durably via provider read-back (see docs on durable review
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# provenance in README.md). Used by the `comment` action and, since `tea`
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# v0.11.1 defines no `--comment`/`-comment` flag on `pr approve`/`pr reject`,
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# also by the `approve` and `request-changes` actions to carry an optional
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# review body that `tea` itself cannot attach.
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#
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# Args: $1 = PR number, $2 = comment body
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# On success: prints only the created comment ID to stdout, returns 0.
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# On failure: prints an error to stderr, returns 1.
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gitea_post_verified_comment() {
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local pr_number="$1" comment_body="$2"
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local host token configured_url repo api_base payload
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local write_response_file readback_response_file comment_id
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host=$(get_remote_host)
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token=$(get_gitea_token "$host") || {
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echo "Error: Gitea token not found for comment persistence" >&2
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return 1
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}
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configured_url=$(get_gitea_url_for_host "$host") || {
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echo "Error: Configured Gitea URL not found for comment persistence" >&2
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return 1
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}
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repo=$(get_gitea_repo_slug_for_url "$configured_url") || {
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echo "Error: Could not resolve Gitea owner/repository relative to configured URL" >&2
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return 1
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}
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api_base="${configured_url%/}/api/v1/repos/$repo"
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payload=$(COMMENT_BODY="$comment_body" python3 -c '
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import json
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import os
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print(json.dumps({"body": os.environ["COMMENT_BODY"]}))
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')
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write_response_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-write.XXXXXX")
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readback_response_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-readback.XXXXXX")
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trap 'rm -f "$write_response_file" "$readback_response_file"' RETURN
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if ! write_status=$(curl -sS -o "$write_response_file" -w '%{http_code}' \
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-X POST \
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-H "Authorization: token $token" \
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-H 'Content-Type: application/json' \
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-d "$payload" \
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"$api_base/issues/$pr_number/comments"); then
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echo "Error: Gitea comment write transport failed" >&2
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return 1
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fi
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if [[ "$write_status" != "201" ]]; then
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echo "Error: Gitea comment write failed with HTTP $write_status" >&2
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return 1
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fi
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comment_id=$(python3 - "$write_response_file" <<'PY'
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import json
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import sys
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try:
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with open(sys.argv[1], encoding="utf-8") as response:
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comment = json.load(response)
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comment_id = comment.get("id") if isinstance(comment, dict) else None
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if not isinstance(comment_id, int) or comment_id <= 0:
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raise ValueError("missing positive comment id")
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except (OSError, json.JSONDecodeError, ValueError) as error:
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print(f"Error: could not identify created Gitea comment: {error}", file=sys.stderr)
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raise SystemExit(1)
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print(comment_id)
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PY
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) || return 1
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if ! readback_status=$(curl -sS -o "$readback_response_file" -w '%{http_code}' \
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-H "Authorization: token $token" \
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"$api_base/issues/comments/$comment_id"); then
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echo "Error: Gitea comment read-back transport failed" >&2
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return 1
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fi
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if [[ "$readback_status" != "200" ]]; then
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echo "Error: Gitea comment read-back failed with HTTP $readback_status" >&2
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return 1
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fi
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if EXPECTED_COMMENT_ID="$comment_id" EXPECTED_COMMENT_BODY="$comment_body" EXPECTED_REPO="$repo" EXPECTED_PR_NUMBER="$pr_number" \
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python3 - "$readback_response_file" <<'PY'
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import json
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import os
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import sys
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from urllib.parse import urlparse
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try:
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with open(sys.argv[1], encoding="utf-8") as response:
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comment = json.load(response)
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if not isinstance(comment, dict):
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raise ValueError("response is not a comment object")
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expected_id = int(os.environ["EXPECTED_COMMENT_ID"])
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expected_body = os.environ["EXPECTED_COMMENT_BODY"]
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expected_repo = os.environ["EXPECTED_REPO"]
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expected_pr = os.environ["EXPECTED_PR_NUMBER"]
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issue_path = urlparse(comment.get("issue_url", "")).path.rstrip("/")
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expected_suffix = f"/repos/{expected_repo}/issues/{expected_pr}"
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if comment.get("id") != expected_id:
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raise ValueError("comment id mismatch")
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if comment.get("body") != expected_body:
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raise ValueError("comment body mismatch")
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if not issue_path.endswith(expected_suffix):
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raise ValueError("repository or PR mismatch")
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except (OSError, json.JSONDecodeError, KeyError, TypeError, ValueError) as error:
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print(f"Error: Gitea comment persistence verification failed: {error}", file=sys.stderr)
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raise SystemExit(1)
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PY
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then
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true
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else
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return 1
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fi
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echo "$comment_id"
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return 0
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}
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# Resolve and cache the Gitea REST endpoint + token for the current remote.
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# Populates GITEA_API_ROOT (…/api/v1), GITEA_API_BASE (…/api/v1/repos/<slug>),
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# and GITEA_API_TOKEN. Returns non-zero (with a clear stderr message) on any
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# resolution failure.
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gitea_resolve_api() {
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local host configured_url repo
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host=$(get_remote_host)
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GITEA_API_TOKEN=$(get_gitea_token "$host") || {
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echo "Error: Gitea token not found for review read-back verification" >&2
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return 1
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}
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configured_url=$(get_gitea_url_for_host "$host") || {
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echo "Error: Configured Gitea URL not found for review read-back verification" >&2
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return 1
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}
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repo=$(get_gitea_repo_slug_for_url "$configured_url") || {
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echo "Error: Could not resolve Gitea owner/repository relative to configured URL" >&2
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return 1
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}
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GITEA_API_ROOT="${configured_url%/}/api/v1"
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GITEA_API_BASE="$GITEA_API_ROOT/repos/$repo"
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return 0
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}
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# Fetch every page of a Gitea list endpoint into $2 (merged into one JSON
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# array). Gitea paginates list responses, so a single-page read would
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# false-negative once a newly created review/comment lands beyond page 1.
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# Walks page=1,2,… until a short or empty page is returned so the merged array
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# is exhaustive. $1 is the endpoint URL with NO query string. Returns non-zero
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# (clear stderr) on any transport / HTTP / parse failure.
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gitea_fetch_all() {
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local base_url="$1" dest="$2" page=1 limit=50 status page_file count
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printf '[]' > "$dest"
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while :; do
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page_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-page.XXXXXX")
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if ! status=$(curl -sS -o "$page_file" -w '%{http_code}' \
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-H "Authorization: token $GITEA_API_TOKEN" \
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"${base_url}?limit=${limit}&page=${page}"); then
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rm -f "$page_file"
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echo "Error: Gitea list read transport failed" >&2
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return 1
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fi
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if [[ "$status" != "200" ]]; then
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rm -f "$page_file"
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echo "Error: Gitea list read failed with HTTP $status" >&2
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return 1
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fi
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count=$(DEST="$dest" python3 - "$page_file" <<'PY'
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import json
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import os
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import sys
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try:
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with open(os.environ["DEST"], encoding="utf-8") as merged_file:
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merged = json.load(merged_file)
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with open(sys.argv[1], encoding="utf-8") as page_file:
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page = json.load(page_file)
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if not isinstance(page, list):
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raise ValueError("page response is not a list")
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merged.extend(item for item in page if isinstance(item, dict))
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with open(os.environ["DEST"], "w", encoding="utf-8") as merged_file:
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json.dump(merged, merged_file)
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except (OSError, json.JSONDecodeError, TypeError, ValueError) as error:
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print(f"Error: could not merge Gitea list page: {error}", file=sys.stderr)
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raise SystemExit(1)
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print(len(page))
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PY
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) || { rm -f "$page_file"; return 1; }
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rm -f "$page_file"
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[[ "$count" -lt "$limit" ]] && break
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page=$((page + 1))
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if [[ "$page" -gt 1000 ]]; then
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echo "Error: Gitea list pagination exceeded 1000 pages" >&2
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return 1
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fi
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done
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return 0
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}
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# Resolve the login of the identity the API token authenticates as (GET
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# /user). Used to attribute a read-back review to THIS action's reviewer so a
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# concurrent review from a DIFFERENT identity cannot satisfy verification.
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# Prints the login on success.
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gitea_authenticated_login() {
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local response_file status
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response_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-whoami.XXXXXX")
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trap 'rm -f "$response_file"' RETURN
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if ! status=$(curl -sS -o "$response_file" -w '%{http_code}' \
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-H "Authorization: token $GITEA_API_TOKEN" \
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"$GITEA_API_ROOT/user"); then
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echo "Error: Gitea authenticated-identity read transport failed" >&2
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return 1
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fi
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if [[ "$status" != "200" ]]; then
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echo "Error: Gitea authenticated-identity read failed with HTTP $status" >&2
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return 1
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fi
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python3 - "$response_file" <<'PY'
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import json
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import sys
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try:
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with open(sys.argv[1], encoding="utf-8") as response:
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user = json.load(response)
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login = user.get("login") if isinstance(user, dict) else None
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if not isinstance(login, str) or not login:
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raise ValueError("missing authenticated login")
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except (OSError, json.JSONDecodeError, TypeError, ValueError) as error:
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print(f"Error: could not resolve authenticated Gitea identity: {error}", file=sys.stderr)
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raise SystemExit(1)
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print(login)
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PY
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}
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# Print the maximum existing review id on a PR (0 if none). This is the
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# pre-write BOUNDARY: Gitea pull-review ids are monotonic, so any review
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# submitted by a subsequent `tea pr approve`/`reject` has an id strictly
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# greater than this value. Paginates fully so a boundary review beyond page 1
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# is still counted.
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gitea_max_review_id() {
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local pr_number="$1" merged_file
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merged_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-boundary.XXXXXX")
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trap 'rm -f "$merged_file"' RETURN
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gitea_fetch_all "$GITEA_API_BASE/pulls/$pr_number/reviews" "$merged_file" || return 1
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python3 - "$merged_file" <<'PY'
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import json
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import sys
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try:
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with open(sys.argv[1], encoding="utf-8") as response:
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reviews = json.load(response)
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ids = [r.get("id") for r in reviews if isinstance(r, dict) and isinstance(r.get("id"), int)]
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print(max(ids) if ids else 0)
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except (OSError, json.JSONDecodeError, TypeError, ValueError) as error:
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print(f"Error: could not compute Gitea review boundary: {error}", file=sys.stderr)
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raise SystemExit(1)
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PY
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}
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# Independently verify that `tea pr approve`/`reject` produced a durable review
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# record — never trust tea's exit code alone (#865, same defect class). Require
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# a review attributable to THIS action: its id must be strictly greater than
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# the pre-write boundary, its author login must equal the acting identity, its
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# state must equal the expected state (APPROVED / REQUEST_CHANGES), and it must
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# have been submitted against the PR's current head commit. The reviews list is
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# paginated fully so a matching review beyond page 1 is still found. Prints the
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# matched review id on success; fails closed (non-zero, clear stderr) if no
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# such review is found.
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#
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# id-above-boundary alone is only temporal ordering; the author-login check is
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# what excludes a concurrent review submitted by a DIFFERENT identity.
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#
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# Residual (documented, not eliminable without a tea-emitted created-record id,
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# which tea 0.11.1 does not reliably provide for approve/reject): a concurrent
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# review by the SAME identity with the same state against the same head inside
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# the boundary window could still be accepted. That is strictly narrower than
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# temporal-only matching.
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#
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# Args: $1 = PR number, $2 = expected state (APPROVED|REQUEST_CHANGES),
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# $3 = pre-write boundary review id, $4 = acting reviewer login.
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gitea_verify_review_submitted() {
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local pr_number="$1" expected_state="$2" boundary="$3" acting_login="$4"
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local pr_response_file reviews_merged_file status head_sha review_id
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pr_response_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-head.XXXXXX")
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reviews_merged_file=$(mktemp "${TMPDIR:-/tmp}/mosaic-pr-review-state.XXXXXX")
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trap 'rm -f "$pr_response_file" "$reviews_merged_file"' RETURN
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# Resolve the PR's current head commit so the review can be pinned to it.
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if ! status=$(curl -sS -o "$pr_response_file" -w '%{http_code}' \
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-H "Authorization: token $GITEA_API_TOKEN" \
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"$GITEA_API_BASE/pulls/$pr_number"); then
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echo "Error: Gitea PR head read transport failed" >&2
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return 1
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fi
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if [[ "$status" != "200" ]]; then
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echo "Error: Gitea PR head read failed with HTTP $status" >&2
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return 1
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fi
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head_sha=$(python3 - "$pr_response_file" <<'PY'
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import json
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import sys
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try:
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with open(sys.argv[1], encoding="utf-8") as response:
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pr = json.load(response)
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head_sha = pr.get("head", {}).get("sha") if isinstance(pr, dict) else None
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if not isinstance(head_sha, str) or not head_sha:
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raise ValueError("missing PR head sha")
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except (OSError, json.JSONDecodeError, AttributeError, TypeError, ValueError) as error:
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print(f"Error: could not resolve PR head commit: {error}", file=sys.stderr)
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raise SystemExit(1)
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print(head_sha)
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PY
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) || return 1
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gitea_fetch_all "$GITEA_API_BASE/pulls/$pr_number/reviews" "$reviews_merged_file" || return 1
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review_id=$(EXPECTED_STATE="$expected_state" BOUNDARY_REVIEW_ID="$boundary" EXPECTED_HEAD_SHA="$head_sha" ACTING_LOGIN="$acting_login" \
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python3 - "$reviews_merged_file" <<'PY'
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import json
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import os
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import sys
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try:
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with open(sys.argv[1], encoding="utf-8") as response:
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reviews = json.load(response)
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if not isinstance(reviews, list):
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raise ValueError("response is not a review list")
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expected_state = os.environ["EXPECTED_STATE"]
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boundary = int(os.environ["BOUNDARY_REVIEW_ID"])
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expected_head = os.environ["EXPECTED_HEAD_SHA"]
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acting_login = os.environ["ACTING_LOGIN"]
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# Attribution to THIS action: created-after-boundary AND submitted by the
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# acting reviewer identity AND expected state AND pinned to the PR's
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# current head commit. The author check excludes a concurrent
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# DIFFERENT-identity review that id+state+head alone would admit.
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matches = [
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r for r in reviews
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if isinstance(r, dict)
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and isinstance(r.get("id"), int)
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and r.get("id") > boundary
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and (r.get("user") or {}).get("login") == acting_login
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and r.get("state") == expected_state
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and r.get("commit_id") == expected_head
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]
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if not matches:
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|
raise ValueError(
|
|
f"no {expected_state} review attributable to this action found "
|
|
"(id > boundary, acting identity, expected state, current head); "
|
|
"tea may have silently failed (#865 defect class)"
|
|
)
|
|
review_id = max(r["id"] for r in matches)
|
|
except (OSError, json.JSONDecodeError, KeyError, TypeError, ValueError) as error:
|
|
print(f"Error: Gitea review persistence verification failed: {error}", file=sys.stderr)
|
|
raise SystemExit(1)
|
|
print(review_id)
|
|
PY
|
|
) || return 1
|
|
|
|
echo "$review_id"
|
|
return 0
|
|
}
|
|
|
|
if [[ "$PLATFORM" == "github" ]]; then
|
|
case $ACTION in
|
|
approve)
|
|
gh pr review "$PR_NUMBER" --approve ${COMMENT:+--body "$COMMENT"}
|
|
echo "Approved GitHub PR #$PR_NUMBER"
|
|
;;
|
|
request-changes)
|
|
if [[ -z "$COMMENT" ]]; then
|
|
echo "Error: Comment required for request-changes"
|
|
exit 1
|
|
fi
|
|
gh pr review "$PR_NUMBER" --request-changes --body "$COMMENT"
|
|
echo "Requested changes on GitHub PR #$PR_NUMBER"
|
|
;;
|
|
comment)
|
|
if [[ -z "$COMMENT" ]]; then
|
|
echo "Error: Comment required"
|
|
exit 1
|
|
fi
|
|
gh pr review "$PR_NUMBER" --comment --body "$COMMENT"
|
|
echo "Added review comment to GitHub PR #$PR_NUMBER"
|
|
;;
|
|
*)
|
|
echo "Error: Unknown action: $ACTION"
|
|
exit 1
|
|
;;
|
|
esac
|
|
elif [[ "$PLATFORM" == "gitea" ]]; then
|
|
case $ACTION in
|
|
approve)
|
|
repo=$(get_repo_slug)
|
|
host=$(get_remote_host)
|
|
login=$(get_gitea_login_for_host "$host")
|
|
# Resolve the REST endpoint and record the pre-write review-id
|
|
# boundary BEFORE the write, so the read-back can require a
|
|
# strictly-newer review created by THIS action (never trust tea's
|
|
# exit code alone — #865 defect class applies to the review state).
|
|
gitea_resolve_api || exit 1
|
|
ACTING_LOGIN=$(gitea_authenticated_login) || exit 1
|
|
review_boundary=$(gitea_max_review_id "$PR_NUMBER") || exit 1
|
|
# tea v0.11.1 defines no --comment/-comment flag on `pr approve`;
|
|
# route any review body via the durable comment API instead (#835).
|
|
TEA_ARGS=(pr approve "$PR_NUMBER" --repo "$repo" --login "$login")
|
|
# --login override goes LAST: tea honors only the final --login on
|
|
# its command line, so an override placed before the detected
|
|
# default above would be silently clobbered by it.
|
|
if [[ -n "$LOGIN_OVERRIDE" ]]; then
|
|
TEA_ARGS+=(--login "$LOGIN_OVERRIDE")
|
|
fi
|
|
tea "${TEA_ARGS[@]}"
|
|
review_id=$(gitea_verify_review_submitted "$PR_NUMBER" "APPROVED" "$review_boundary" "$ACTING_LOGIN") || {
|
|
echo "Error: could not verify an APPROVED review landed on Gitea PR #$PR_NUMBER via bounded read-back; treating tea's exit code as untrustworthy (#865)." >&2
|
|
exit 1
|
|
}
|
|
echo "Approved and verified Gitea PR #$PR_NUMBER (review ID $review_id)"
|
|
if [[ -n "$COMMENT" ]]; then
|
|
comment_id=$(gitea_post_verified_comment "$PR_NUMBER" "$COMMENT") || exit 1
|
|
echo "Added and verified review comment on Gitea PR #$PR_NUMBER (comment ID $comment_id)"
|
|
fi
|
|
;;
|
|
request-changes)
|
|
if [[ -z "$COMMENT" ]]; then
|
|
echo "Error: Comment required for request-changes"
|
|
exit 1
|
|
fi
|
|
repo=$(get_repo_slug)
|
|
host=$(get_remote_host)
|
|
login=$(get_gitea_login_for_host "$host")
|
|
# Record the pre-write review-id boundary BEFORE the write (see the
|
|
# approve path above for the rationale).
|
|
gitea_resolve_api || exit 1
|
|
ACTING_LOGIN=$(gitea_authenticated_login) || exit 1
|
|
review_boundary=$(gitea_max_review_id "$PR_NUMBER") || exit 1
|
|
# tea v0.11.1 defines no --comment/-comment flag on `pr reject`;
|
|
# route the review body via the durable comment API instead (#835).
|
|
TEA_ARGS=(pr reject "$PR_NUMBER" --repo "$repo" --login "$login")
|
|
# --login override goes LAST: tea honors only the final --login on
|
|
# its command line, so an override placed before the detected
|
|
# default above would be silently clobbered by it.
|
|
if [[ -n "$LOGIN_OVERRIDE" ]]; then
|
|
TEA_ARGS+=(--login "$LOGIN_OVERRIDE")
|
|
fi
|
|
tea "${TEA_ARGS[@]}"
|
|
review_id=$(gitea_verify_review_submitted "$PR_NUMBER" "REQUEST_CHANGES" "$review_boundary" "$ACTING_LOGIN") || {
|
|
echo "Error: could not verify a REQUEST_CHANGES review landed on Gitea PR #$PR_NUMBER via bounded read-back; treating tea's exit code as untrustworthy (#865)." >&2
|
|
exit 1
|
|
}
|
|
echo "Requested changes and verified on Gitea PR #$PR_NUMBER (review ID $review_id)"
|
|
comment_id=$(gitea_post_verified_comment "$PR_NUMBER" "$COMMENT") || exit 1
|
|
echo "Added and verified review comment on Gitea PR #$PR_NUMBER (comment ID $comment_id)"
|
|
;;
|
|
comment)
|
|
if [[ -z "$COMMENT" ]]; then
|
|
echo "Error: Comment required"
|
|
exit 1
|
|
fi
|
|
|
|
comment_id=$(gitea_post_verified_comment "$PR_NUMBER" "$COMMENT") || exit 1
|
|
echo "Added and verified comment on Gitea PR #$PR_NUMBER (comment ID $comment_id)"
|
|
;;
|
|
*)
|
|
echo "Error: Unknown action: $ACTION"
|
|
exit 1
|
|
;;
|
|
esac
|
|
else
|
|
echo "Error: Unknown platform"
|
|
exit 1
|
|
fi
|