Tomas Janousek b5a8b7035e Request multiple folder levels at once in get_all_jobs
On our Jenkins instance with almost a hundred folders, JJB update
stalls for quite a while because it calls get_all_jobs. When invoked
locally at the Jenkins master, it's a matter of seconds, on a fast
broadband link and VPN, it's 2 minutes, and on a train it's easily 10
minutes.

But there's trick!

    curl \
        --show-error --silent --fail \
        --user : --negotiate \
        --get \
        --data-urlencode \
            tree=jobs\[url\,name\,jobs\[url\,name\,jobs\[url\,name\,\
            jobs\[url\,name\,jobs\[url\,name\,jobs\[url\,name\,\
            jobs\[url\,name\,jobs\[url\,name\,jobs\[url\,name\,\
            jobs\[url\,name\,jobs\]\]\]\]\]\]\]\]\]\]
        https://jenkins.example.com/api/json

This returns almost instantly.

And it gets better: if we fail to correctly guess the nesting level
necessary, Jenkins returns

    …, "jobs": [{}, {}, …], …

so we can easily detect that we need to recurse deeper.

Change-Id: I7268259149e4bc8939c512a112c7e6ec1908224f
2018-10-17 18:06:56 +02:00
..
2014-09-26 09:12:54 -07:00