Add Gerrit Integration

[sschuberth]

Very similar to #117, Gerrit "does not support any code search so it would be a good idea to plug the gap".

Maybe this is something @lucamilanesio would also be interested in (and be able to help with)?

[boyter]

Sounds good. I will be looking at GitLab integration for the next release so no reason I shouldn't have a look at this as well and see what would be involved.

[sschuberth]

In that context you might be also interested in how Zoekt added Gerrit ACL support (pages 22 and 23 in the slides).

[sschuberth]

Maybe you want to add e.g. the repo at https://gerrit-review.googlesource.com/admin/repos/gerrit to demo.searchcodeserver.com, too?

[sschuberth]

BTW, if you want a performance comparison against Zoekt, you could probably take a look at https://cs.bazel.build/ (which indexes quite a lot of repos besides Bazel).

[boyter]

Interesting. Looks like its based on the trigram search from Russ that google code search used. I wonder what sort of server that's running on. The demo instance of searchcode runs on a $2.50 a month Vultr instance which is probably a bit mean of me to be honest.

[sschuberth]

For reference, proper Gerrit integration also requires #122 to be implemented.

[hanwen]

cs.bazel.build runs on a 16 core machine with 60G RAM and attached SSD.

It indexes about 60G source code, but SSD should be enough for ~90G. Cost of the machine is about $400/month

See https://cs.bazel.build/search?q=r%3A.