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Concurrent hydra-evaluator

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This rewrites the top-level loop of hydra-evaluator in C++. The Perl
stuff is moved into hydra-eval-jobset. (Rewriting the entire evaluator
would be nice but is a bit too much work.) The new version has some
advantages:

* It can run multiple jobset evaluations in parallel.

* It uses PostgreSQL notifications so it doesn't have to poll the
  database. So if a jobset is triggered via the web interface or from
  a GitHub / Bitbucket webhook, evaluation of the jobset will start
  almost instantaneously (assuming the evaluator is not at its
  concurrency limit).

* It imposes a timeout on evaluations. So if e.g. hydra-eval-jobset
  hangs connecting to a Mercurial server, it will eventually be
  killed.
This commit is contained in:
Eelco Dolstra
2016-10-13 15:53:05 +02:00
parent 16feddd5d4
commit e0b2921ff2
15 changed files with 325 additions and 55 deletions
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2
tests/Makefile.am
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@ -13,7 +13,7 @@ TESTS_ENVIRONMENT = \
NIX_LOG_DIR="$(abs_builddir)/nix/var/log/nix" \
NIX_BUILD_HOOK= \
PERL5LIB="$(srcdir):$(top_srcdir)/src/lib:$$PERL5LIB" \
PATH=$(abs_top_srcdir)/src/script:$(abs_top_srcdir)/src/hydra-eval-jobs:$(abs_top_srcdir)/src/hydra-queue-runner:$$PATH \
PATH=$(abs_top_srcdir)/src/hydra-evaluator:$(abs_top_srcdir)/src/script:$(abs_top_srcdir)/src/hydra-eval-jobs:$(abs_top_srcdir)/src/hydra-queue-runner:$$PATH \
perl -w
EXTRA_DIST = \