106 lines
3.8 KiB
Bash
106 lines
3.8 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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SOURCE_BRANCH="${SOURCE_BRANCH:-master}"
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COMMIT_HASH="${COMMIT_HASH:-}"
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GIT_REMOTE_URL="${GIT_REMOTE_URL:-}"
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GIT_REMOTE_FALLBACK_URL="${GIT_REMOTE_FALLBACK_URL:-}"
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SOURCE_COMMIT_FILE="${SOURCE_COMMIT_FILE:-.jenkins-source-commit}"
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# Windows PowerShell 5.1 的 UTF-8 输出可能带 BOM；下游参数校验前先剥离不可见字节。
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SOURCE_BRANCH="$(printf "%s" "${SOURCE_BRANCH}" | sed $'s/^\xef\xbb\xbf//' | tr -d '\r\n')"
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COMMIT_HASH="$(printf "%s" "${COMMIT_HASH}" | sed $'s/^\xef\xbb\xbf//' | tr -d '\r\n')"
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GIT_REMOTE_URL="$(printf "%s" "${GIT_REMOTE_URL}" | sed $'s/^\xef\xbb\xbf//' | tr -d '\r\n')"
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GIT_REMOTE_FALLBACK_URL="$(printf "%s" "${GIT_REMOTE_FALLBACK_URL}" | sed $'s/^\xef\xbb\xbf//' | tr -d '\r\n')"
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if [[ ! "${SOURCE_BRANCH}" =~ ^[0-9A-Za-z._/-]+$ ]]; then
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echo "[jenkins-checkout-source] SOURCE_BRANCH 只能包含数字、字母、点、下划线、短横线和斜杠: ${SOURCE_BRANCH}" >&2
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exit 1
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fi
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if [[ "${SOURCE_BRANCH}" == /* || "${SOURCE_BRANCH}" == */ || "${SOURCE_BRANCH}" == *..* ]]; then
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echo "[jenkins-checkout-source] SOURCE_BRANCH 不能以斜杠开头/结尾，也不能包含连续点号: ${SOURCE_BRANCH}" >&2
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exit 1
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fi
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if [[ -n "${COMMIT_HASH}" && ! "${COMMIT_HASH}" =~ ^[0-9a-fA-F]{7,40}$ ]]; then
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echo "[jenkins-checkout-source] COMMIT_HASH 只能填写 7 到 40 位十六进制 Git commit hash: ${COMMIT_HASH}" >&2
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exit 1
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fi
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GIT_REMOTE_CANDIDATES=()
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add_git_remote_candidate() {
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local candidate="$1"
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local existing
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if [[ -z "${candidate}" ]]; then
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return
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fi
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for existing in "${GIT_REMOTE_CANDIDATES[@]}"; do
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if [[ "${existing}" == "${candidate}" ]]; then
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return
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fi
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done
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GIT_REMOTE_CANDIDATES+=("${candidate}")
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}
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fetch_source_branch() {
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local remote_url="$1"
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if [[ -n "${remote_url}" ]]; then
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git remote set-url origin "${remote_url}"
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fi
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echo "[jenkins-checkout-source] 尝试 Git 远端: ${remote_url:-origin}"
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if [[ -z "${COMMIT_HASH}" ]]; then
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git fetch --no-tags --prune --depth=1 origin "+refs/heads/${SOURCE_BRANCH}:refs/remotes/origin/${SOURCE_BRANCH}"
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else
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git fetch --no-tags --prune origin "+refs/heads/${SOURCE_BRANCH}:refs/remotes/origin/${SOURCE_BRANCH}"
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fi
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}
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add_git_remote_candidate "${GIT_REMOTE_URL}"
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add_git_remote_candidate "${GIT_REMOTE_FALLBACK_URL}"
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git reset --hard HEAD
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if [[ "${#GIT_REMOTE_CANDIDATES[@]}" -eq 0 ]]; then
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fetch_source_branch ""
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else
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fetch_ok=0
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for git_remote_candidate in "${GIT_REMOTE_CANDIDATES[@]}"; do
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if fetch_source_branch "${git_remote_candidate}"; then
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GIT_REMOTE_URL="${git_remote_candidate}"
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fetch_ok=1
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break
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fi
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echo "[jenkins-checkout-source] Git 远端拉取失败: ${git_remote_candidate}" >&2
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done
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if [[ "${fetch_ok}" -ne 1 ]]; then
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echo "[jenkins-checkout-source] 所有 Git 远端均拉取失败。" >&2
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exit 1
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fi
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fi
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if [[ -n "${COMMIT_HASH}" && "$(git rev-parse --is-shallow-repository 2>/dev/null || echo false)" == "true" ]]; then
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git fetch --unshallow --no-tags origin "+refs/heads/${SOURCE_BRANCH}:refs/remotes/origin/${SOURCE_BRANCH}" || true
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fi
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git cat-file -e "refs/remotes/origin/${SOURCE_BRANCH}^{commit}"
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if [[ -n "${COMMIT_HASH}" ]]; then
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git cat-file -e "${COMMIT_HASH}^{commit}"
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RESOLVED_COMMIT="$(git rev-parse "${COMMIT_HASH}^{commit}")"
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if ! git merge-base --is-ancestor "${RESOLVED_COMMIT}" "refs/remotes/origin/${SOURCE_BRANCH}"; then
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echo "[jenkins-checkout-source] 指定 commit 不属于 origin/${SOURCE_BRANCH}: ${RESOLVED_COMMIT}" >&2
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exit 1
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fi
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else
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RESOLVED_COMMIT="$(git rev-parse "refs/remotes/origin/${SOURCE_BRANCH}^{commit}")"
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fi
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git checkout --detach "${RESOLVED_COMMIT}"
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git reset --hard HEAD
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git clean -fd
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printf "%s\n" "${RESOLVED_COMMIT}" >"${SOURCE_COMMIT_FILE}"
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echo "[jenkins-checkout-source] 使用源码: branch=${SOURCE_BRANCH} commit=${RESOLVED_COMMIT} remote=${GIT_REMOTE_URL:-origin}"
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