Node.js 如果webpack生成失败，则中止post接收挂钩

我有一个部署设置，可以将next.js repo推送到我在服务器上设置的git remote

我有一个post-receive-hook设置，它将在一个临时文件夹中构建应用程序，然后将其复制到永久文件夹并使用PM2启动

# post-receive

#!/bin/sh

# The production directory
TARGET="/var/node-apps/my-app"

# A temporary directory for deployment
TEMP="/var/node-apps/tmp/my-app"

# The Git repo
REPO="/var/git/my-app.git"

# The Git branch
BRANCH="master"

# Deploy the content to the temporary directory
echo ‘post-receive: copy to tmp’
mkdir -p $TEMP

git --work-tree=$TEMP --git-dir=$REPO checkout $BRANCH -f
echo ‘post-receive: checkout branch’
cd $TEMP

echo ‘post-receive: npm install…’
npm install \
&& echo ‘post-receive: building…’ \
&& npm run build \
&& echo ‘post-receive: → done.’


# Replace the production directory
# with the temporary directory
cd /
rm -rf $TARGET
mv $TEMP $TARGET
cd $TARGET

(pm2 delete 'my-app' || true)
pm2 start npm --name 'my-app' -- run start-production -i max
echo ‘post-receive: app started successfully with pm2.’
pm2 save
echo ‘post-receive: pm2 saved.’

这很好，但是如果构建失败（例如出现linting错误），post-receive脚本将继续执行，并将失败的构建复制到永久目录，然后使用PM2启动应用程序（当然，这会失败，因为构建失败）

如果webpack构建失败，我希望post-receive钩子不会继续，而是回显一个警告

我曾尝试过这样处理错误：

abort()
{
    echo >&2 '
***************
*** ABORTED ***
***************
'
    echo "An error occurred. Exiting..." >&2
    exit 1
}

trap 'abort' 0
trap 'abort' 1

set -e

[rest of script here]

trap : 0
trap : 1

---

但这也不起作用。

多亏了@torek的评论提示，才明白了这一点

我保留了中止陷阱，并将

和&npm运行构建\

更改为

和&npm运行构建| |退出1 \

我不确定陷阱是否严格必要，因为如果

npm run build

失败，脚本将退出

# post-receive

#!/bin/sh

abort()
{
    echo >&2 '
***************
*** ABORTED ***
***************
'
    echo "An error occurred. Exiting..." >&2
    exit 1
}

trap 'abort' 0
trap 'abort' 1

set -e


echo ‘post-receive: Triggered.’

# The production directory
TARGET="/var/node-apps/myapp"

# A temporary directory for deployment
TEMP="/var/node-apps/tmp/myapp"

# The Git repo
REPO="/var/git/myapp.git"

# The Git branch
BRANCH="master"

# Deploy the content to the temporary directory
echo ‘post-receive: copy to tmp’
mkdir -p $TEMP

git --work-tree=$TEMP --git-dir=$REPO checkout $BRANCH -f
echo ‘post-receive: checkout branch’
cd $TEMP

# Do stuffs, like npm install…
echo ‘post-receive: npm install…’
npm install \
&& echo ‘post-receive: building…’ \
&& npm run build || exit 1 \
&& echo ‘post-receive: → done.’


# Replace the production directory
# with the temporary directory
cd /
rm -rf $TARGET
mv $TEMP $TARGET
cd $TARGET

(pm2 delete 'myapp' || true)
pm2 start npm --name 'myapp' -- run start-production -i max
echo ‘post-receive: app started successfully with pm2.’
pm2 save
echo ‘post-receive: pm2 saved.’

# Done!
trap : 0
trap : 1

echo >&2 '
************
*** DONE *** 
************
'

---

通常，

trap

在接收到信号时执行代码。（陷阱0发生在退出时，与退出的原因无关；bash（而不是普通sh）有两个额外的陷阱。）使用

if

判断命令是否成功：

if npm。。。；然后（成功了）；否则（它失败了）；fi

。