Issue 912185 has been merged into this issue.

Scope expanded a bit to interpolate from the standard Build proto. Also delayed a bit from a refactoring of the build page as it is reworked in front of the buildbot deprecation and the build sources it handles.

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/luci/luci-go.git/+/df33273c1a97445114b0b913252b7b0a9a4cc241

commit df33273c1a97445114b0b913252b7b0a9a4cc241
Author: David Burger <dburger@chromium.org>
Date: Mon Dec 17 21:44:45 2018

Add bug links functionality for build pages

Add the ability to put links on the build pages intended
to allow prefilling of bug entry forms. Configuration protos
are changed to allow the entering of an optional BugTemplate
for a project. The template features summary and description
placeholders that get interpolated by the context of the
build. If all the interpolation placeholders for a particular
template are satisfied that link is rendered on the page.

The template syntax follows that of the built in go
templates. That is {{.placheholder}} style. The placeholders
that are allowed are documented in the proto definition file.
Additional placeholders are added easily if the data needed
can be obtained from either query parameters or the MiloBuild
data instance.

Bug: 903385
Change-Id: I9f551772d14d0b90f1adcf87bfa1d029446486d3
Reviewed-on: https://chromium-review.googlesource.com/c/1355340
Reviewed-by: David Burger <dburger@chromium.org>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>
Commit-Queue: David Burger <dburger@chromium.org>

[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/api/config/generate.go
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/api/config/project.pb.go
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/api/config/project.proto
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/api/config/proto_gae.gen.go
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/common/config.go
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/appengine/templates/pages/build_legacy.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/buildbot.build-Debug_page-_CrWinGoma_30608.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/buildbot.build-Debug_page-_chromium_presubmit_426944.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/buildbot.build-Debug_page-_gerritCL_1234.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/buildbot.build-Debug_page-_newline_1234.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/buildbot.build-Debug_page-_win_chromium_rel_ng_246309.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-Basic_successful_build.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-canceled.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-exception.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-expired.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-finished-logdog-expired-stream.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-gerrit.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-internal.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-link.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-nested.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-patch-failure.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-pending-logdog.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-pending.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-running-logdog-no-annotation-stream.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-running-logdog.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-running.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-timeout.html
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/expectations/swarming.build-build-unicode.html
[add] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/feedback_links.go
[modify] https://crrev.com/df33273c1a97445114b0b913252b7b0a9a4cc241/milo/frontend/view_build_legacy.go

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/luci/luci-go.git/+/ebac1c199ba95f0ee490c25e673a3e5f391ee8a2

commit ebac1c199ba95f0ee490c25e673a3e5f391ee8a2
Author: David Burger <dburger@chromium.org>
Date: Wed Dec 26 21:41:46 2018

Add {{.MiloBuildUrl}} as build page feedback link interpolation placeholder

Add the placeholder {{.MiloBuildUrl}} as a placeholder that can be used in
BugTemplates for formulating the feedback URL. This allows the user to easily
insert a URL back to the build page in the description of the bug created
by the feedback link.

This feature is added to the legacy page - presumably when the new build page
refactoring is more complete and the dust settles there this functionality will
likewise be moved to that page.

Bug: 903385
Change-Id: I2310608df3cac9755747cb04529021fd5b7be300
Reviewed-on: https://chromium-review.googlesource.com/c/1382612
Commit-Queue: David Burger <dburger@chromium.org>
Reviewed-by: Ryan Tseng <hinoka@chromium.org>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>

[modify] https://crrev.com/ebac1c199ba95f0ee490c25e673a3e5f391ee8a2/milo/api/config/project.proto
[modify] https://crrev.com/ebac1c199ba95f0ee490c25e673a3e5f391ee8a2/milo/frontend/view_build_legacy.go

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/luci/luci-go.git/+/1c076a28342671222591fe6b1079bdf3141a36a6

commit 1c076a28342671222591fe6b1079bdf3141a36a6
Author: David Burger <dburger@chromium.org>
Date: Tue Jan 08 21:36:25 2019

Add {{.MiloBuilderUrl}} as build page bug template placeholder

Add the placeholder {{.MiloBuilderUrl}} as a placeholder that can be used
in BugTemplates for formulating the feedback URL on the build page. This
allows a user to easily insert a URL back to the builder page in the
description of the bug created by the feedback link.

This feature is added to the legacy page - presumably when the new build page
refactoring is more complete and the dust settles there this functionality will
likewise be moved to that page.

Bug: 903385
Change-Id: Ia29515b7c225acd7a49e92b1176b3c450c453077
Reviewed-on: https://chromium-review.googlesource.com/c/1390979
Commit-Queue: David Burger <dburger@chromium.org>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>

[modify] https://crrev.com/1c076a28342671222591fe6b1079bdf3141a36a6/milo/api/config/project.proto
[modify] https://crrev.com/1c076a28342671222591fe6b1079bdf3141a36a6/milo/frontend/view_build_legacy.go