godoc/redirect: display Gerrit/Rietveld CL disambiguation page when needed

For CL numbers that are determined to be Rietveld CLs, instead of
immediately redirecting, check whether a Gerrit CL with the same
number also exists. Do so by querying the Gerrit API and caching
the existing CLs. If both exist, display a very simple disambiguation
HTML page.

Cache Gerrit CLs that exist, to avoid querying the remote API server
more than once per CL. We can't cache Gerrit CLs that don't exist,
since they might get created in the future.

Fixes golang/go#28836

Change-Id: I08c32dc82a0136788337c5c32028e87428e8d81e
Reviewed-on: https://go-review.googlesource.com/c/157197
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed
tree: 5804a488126f94ac35e63589fd9b60adfc27a870
  1. benchmark/
  2. blog/
  3. cmd/
  4. container/
  5. cover/
  6. go/
  7. godoc/
  8. imports/
  9. internal/
  10. playground/
  11. present/
  12. refactor/
  13. third_party/
  14. .gitattributes
  15. .gitignore
  16. AUTHORS
  17. codereview.cfg
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. LICENSE
  21. PATENTS
  22. README.md
README.md

Go Tools

This subrepository holds the source for various packages and tools that support the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.

Others, including the Go guru and the test coverage tool, can be fetched with go get.

Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs.

Download/Install

The easiest way to install is to run go get -u golang.org/x/tools/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/tools.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the tools repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/tools/(your subdir):” in the subject line, so it is easy to find.