Mirror public git repositories to an Atlassian Stash instance

Git to Stash Mirror

#!/bin/bash
set -e

function stash_create_repo()
{
    local username="$1"
    local password="$2"
    local hostname="$3"
    local port="$4"
    local project="$5"
    local repo="$6"
    local repouri="ssh://git@${hostname}:${port}/${project}/${repo}.git"

    # Does repo exist?
    if git ls-remote "${repouri}" HEAD &>/dev/null; then
        return 0;
    fi

    # Does project exist?
    if [ 200 -eq "`curl -sL -w "%{http_code}" http://${username}:${password}@${hostname}/rest/api/latest/projects/${project} -o /dev/null`" ]; then
        echo "Found stash project: ${project}"
    else
        echo "Creating stash project: ${project}"
        curl -u "${username}":"${password}" -X POST -H "Accept: application/json"  -H "Content-Type: application/json" \
            "http://${hostname}/rest/api/latest/projects" \
            -d '{"key":"'${project}'", "name": "'${project}'", "description": "'${project}' (mirror)"}'
    fi

    # Create repo
    echo "Creating stash repo: ${repo}"
    curl -u "${username}":"${password}" -X POST -H "Accept: application/json"  -H "Content-Type: application/json" \
        "http://${hostname}/rest/api/latest/projects/${project}/repos" \
        -d '{"name": "'${repo}'"}'

    return 0
}

function mirror_repos_to_stash()
{
    local stash_conf_path=stash.conf
    local repos_conf_path=repos.conf
    local local_mirror_root=/var/repos/mirror

    if [ ! -f "${stash_conf_path}" ]; then
        echo "Could not find stash configuration at ${stash_conf_path}"
        return 1
    fi

    if [ ! -f "${repos_conf_path}" ]; then
        echo "Could not find repos configuration at ${repos_conf_path}"
        return 1
    fi

    local username=`grep "^username:" "${stash_conf_path}" | cut -d: -f2`
    local password=`grep "^password:" "${stash_conf_path}" | cut -d: -f2`
    local hostname=`grep "^hostname:" "${stash_conf_path}" | cut -d: -f2`
    local port=`grep "^port:" "${stash_conf_path}" | cut -d: -f2`

    if [ ! -d "${local_mirror_root}" ]; then
        mkdir -p "${local_mirror_root}"
    fi

    cat "${repos_conf_path}" | while read line; do
        local project="`echo "${line}" | cut -d: -f1`"
        local repo="`echo "${line}" | cut -d: -f2`"
        local origin_uri="`echo "${line}" | cut -d: -f3-`"
        local local_mirror="${local_mirror_root}/${project}/${repo}"
        local stash_mirror="ssh://git@${hostname}:${port}/${project}/${repo}.git"

        if [ ! -d "${local_mirror}" ]; then
            mkdir -p "${local_mirror}"
        fi

        cd "${local_mirror}"

        # Ensure directory is a git repo
        if ! git config remote.origin.url &>/dev/null; then
            git clone --mirror "${origin_uri}" .
        fi

        # Ensure stash repo exists
        if stash_create_repo "${username}" "${password}" "${hostname}" "${port}" "${project}" "${repo}"; then
            echo "Found mirror repo: ${project}/${repo}"
        else
            echo "Failed to create mirro repo: ${project}/${repo}"
            return 1
        fi

        # Ensure stash remote is configured
        if ! git config remote.stash.url &>/dev/null; then
            git remote add stash ${stash_mirror}
        fi

        git fetch origin
        git push --all stash
        git push --tags stash
    done

    return 0
}

mirror_repos_to_stash $@