如何构建一个git轮询构建bot？ [英] How to build a git polling build bot?

问题描述

如何一个小cron，bash + make基于脚本（例如，比例如更小，不如哈得逊鲁棒）build-bot轮询一个Git仓库，并检测它是否应该构建现在。如果在定期从远程git repo中拉出，它已经检索到新的代码？

How can a little cron, bash + make based script (e.g. much smaller and less robust than, for example, Hudson) build-bot poll a git repo and detect if it should build now - e.g. if in its periodic pull from the remote git repo, it has retrieved new code?

目前，它看起来像这样：

Currently, it looks like this:

git fetch  > build_log.txt 2>&1
if [ $? -eq 0 ]
then
  echo "Fetch from git done";
  git merge FETCH_HEAD >> build_log.txt 2>&1 ;
  if [ $? -eq 0 ]
  then
    echo "Merge via git done"; ...
    # builds unconditionally at the moment
  fi
fi

推荐答案

如果没有提取任何内容，则get fetch将不会输出行，因此只需在build_log.txt中检查零文件大小：

If nothing was fetched, then "get fetch" will output no lines, so just check for zero filesize on build_log.txt:

git fetch > build_log.txt 2>&1
if [ -s build_log.txt ]
then
   # build
fi

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