3 years ago · 7120e39eff
parent 586efe40bb
commit 7120e39eff
1 changed files with 118 additions and 0 deletions
--- a/github_repos_mirror_to_gitlab.sh
+++ b/github_repos_mirror_to_gitlab.sh
@ -0,0 +1,118 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2022-03-22 10:47:11 +0000 (Tue, 22 Mar 2022)
+#
+#  https://github.com/HariSekhon/bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/HariSekhon
+#
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+srcdir="$(dirname "${BASH_SOURCE[0]}")"
+
+# shellcheck disable=SC1090
+. "$srcdir/lib/github.sh"
+
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Mirrors one or more given repos to from GitHub to GitLab via SSH local mirror clones
+
+If no repos are given, iterates all non-fork repos for the current user or GitHub organization
+
+Each repo will have the same name in GitLab as it does on GitHub
+
+Requires \$GITHUB_TOKEN AND \$GITLAB_TOKEN to be set as well as a locally available SSH key for cloning/pull/push
+
+\$GITHUB_ORGANIZATION takes priority if set, otherwise uses \$GITHUB_USER or owner of the \$GITHUB_TOKEN
+\$GITLAB_OWNER should be set if not mirroring to the owner of the \$GITLAB_TOKEN
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="[<repo1> <repo2> <repo3> ...]"
+
+check_env_defined "GITHUB_TOKEN"
+check_env_defined "GITLAB_TOKEN"
+
+help_usage "$@"
+
+#min_args 1 "$@"
+
+timestamp "Starting GitHub to GitLab mirroring"
+echo >&2
+
+owner="${GITHUB_ORGANIZATION:-${GITHUB_USER:-$(get_github_user)}}"
+gitlab_owner="${GITLAB_OWNER:-${GITLAB_USER:-$("$srcdir/gitlab_api.sh" /user | jq -r .username)}}"
+
+if is_blank "$owner"; then
+    die "Failed to determine GitHub owner"
+fi
+if is_blank "$gitlab_owner"; then
+    die "Failed to determine GitLab owner"
+fi
+
+#timestamp "Getting GitLab id in case we need to create any repos in GitLab"
+#gitlab_id="$("$srcdir/gitlab_api.sh" "/users?username=$gitlab_owner" | jq -r '.[0].id')"
+#echo >&2
+#if is_blank "$gitlab_id"; then
+#    die "Failed to determine GitLab id"
+#fi
+
+if [ $# -gt 0 ]; then
+    repos="$*"
+else
+    timestamp "Getting list of all non-fork GitHub repos owned by '$owner'"
+    repos="$(get_github_repos "$owner" "${GITHUB_ORGANIZATION:-}")"
+    echo >&2
+fi
+
+# not using mktemp because we want to reuse this staging area between runs for efficiency
+tmpdir="/tmp/github_to_gitlab_mirroring"
+
+timestamp "Switching to '$tmpdir' directory for mirror staging"
+mkdir -p -v "$tmpdir"
+cd "$tmpdir"
+echo >&2
+
+for repo in $repos; do
+    gitlab_repo="$("$srcdir/urlencode.sh" <<< "$gitlab_owner/$repo")"
+    timestamp "Checking GitLab repo '$gitlab_owner/$repo' exists"
+    if ! "$srcdir/gitlab_api.sh" "/projects/$gitlab_repo" >/dev/null; then
+        timestamp "Creating GitLab repo '$gitlab_owner/$repo'"
+        # only available for admins
+        #"$srcdir/gitlab_api.sh" "/projects/user/$gitlab_id" -X POST -d "{ \"name\": \"$repo\", \"visibility\": \"private\" }" >/dev/null
+        "$srcdir/gitlab_api.sh" "/projects" -X POST -d "{ \"name\": \"$repo\", \"visibility\": \"private\" }" >/dev/null
+        echo >&2
+    fi
+    if [ -d "$repo.git" ]; then
+        timestamp "Using existing clone in directory '$repo.git'"
+        pushd "$repo.git" >/dev/null
+        git remote update origin
+    else
+        timestamp "Cloning GitHub repo to directory '$repo.git'"
+        git clone --mirror "git@github.com:$owner/$repo.git"
+        pushd "$repo.git" >/dev/null
+    fi
+    if ! git remotes -v | awk '{print $1}' | grep -Fxq gitlab; then
+        timestamp "Adding GitLab remote origin"
+        git remotes add gitlab git@gitlab.com:"$gitlab_owner/$repo"
+        echo >&2
+    fi
+    timestamp "Pushing all branches to GitLab"
+    git push --all gitlab
+    timestamp "Pushing all tags to GitLab"
+    git push --tags gitlab
+    # more dangerous, force overwrites remote repo refs
+    #git push --mirror gitlab
+    popd >/dev/null
+    echo >&2
+done
+
+timestamp "GitHub to GitLab mirroring completed successfully"