[Misc] get source from sub modules

Summary:
a tool script to get sub module source
ref T19246722

Reviewers: 传胜

Reviewed By: 传胜

Subscribers: 麦庶

Differential Revision: https://aone.alibaba-inc.com/code/D850205

get_source_dragonwell.sh

+#!/bin/bash
+#
+# Copyright (c) 2019 Alibaba Group Holding Limited. All Rights Reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation. Alibaba designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+to_stderr() {
+    echo "$@" >&2
+}
+
+error() {
+    to_stderr "ERROR: $1"
+    exit ${2:-126}
+}
+
+warning() {
+    to_stderr "WARNING: $1"
+}
+
+subrepos="corba jaxp jaxws langtools jdk hotspot nashorn"
+
+# default options
+GITURL="git@gitlab.alibaba-inc.com:dragonwell"
+REPO_PREFIX="jdk8u_"
+DEPTH=1000
+BRANCH="master"
+
+usage() {
+      echo "usage: $0 [-h|--help] [-b|--branch branch_name] [-s|--site github|gitlab]"
+      exit 1
+}
+
+# parse options
+while [ $# -gt 0 ]
+do
+  case $1 in
+    -h | --help )
+      usage
+      ;;
+
+    -b | --branch )
+      shift;
+      BRANCH=$1
+      ;;
+
+    -s | --site )
+      shift;
+      site=$1
+      if [[ $site == "github" ]]; then
+        GITURL="git@github.com:alibaba"
+        REPO_PREFIX="dragonwell8_"
+      elif [[ $site == "gitlab" ]]; then
+        # inside alibaba
+        GITURL="git@gitlab.alibaba-inc.com:dragonwell"
+        REPO_PREFIX="jdk8u_"
+      else
+        usage
+      fi
+      ;;
+
+    *)  # unknown option
+      ;;
+  esac
+  shift
+done
+
+GIT=`command -v git`
+if [ "x$GIT" = "x" ]; then
+  error "Could not locate git command"
+fi
+
+echo "Check directories"
+for repo in ${subrepos}; do
+  if [[ -d ${repo} ]]; then
+    error "directory ${repo} already exist"
+  fi
+done
+
+echo "Start clone..."
+for repo in ${subrepos}; do
+  REPOURL=${GITURL}/${REPO_PREFIX}${repo}.git
+  #CLONEOPTS="--depth ${DEPTH}"
+  echo ${GIT} clone ${CLONEOPTS} ${REPOURL} ${repo}
+  ${GIT} clone ${CLONEOPTS} ${REPOURL} ${repo}
+  result=$?
+  if [ $result  != 0 ]; then
+    error "failed to clone ${repo}"
+  fi
+  # checkout to specific branch
+  if [ $BRANCH != "master" ]; then
+    cd ${repo}
+    ${GIT} checkout -b ${BRANCH} origin/${BRANCH}
+    result=$?
+    if [ $result  != 0 ]; then
+      error "failed to checkout ${repo} to ${BRANCH}"
+    fi
+    cd ..
+  fi
+done