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Author SHA1 Message Date
Eelco Dolstra 7a654259ff Wake the dispatcher when the machines file has changed 2015-08-17 15:48:10 +02:00
Eelco Dolstra 092d60735b Keep track of wait time per system type 
I.e., how much time the currently runnable steps per system type have
been waiting. This is useful for deciding whether to provision more
machines.
 2015-08-17 15:45:44 +02:00
Eelco Dolstra 99bfc37764 Don't abort steps that have an unsupported system type 
This is necessary because the required system type can become
available later (e.g. by being provisioned by the
auto-scaler). However, in the future, we may want to fail steps if
they have been unsupported for more than a certain amount of time.
 2015-08-17 15:10:41 +02:00
Eelco Dolstra ea1eb2e3fb Keep track of requiredSystemFeatures in the machine stats 
For example, steps that require the "kvm" feature may require a
different kind of machine to be provisioned. This can also be used to
require performance-sensitive tests to run on a particular kind of
machine, e.g., by setting requiredSystemFeatures to something like
"ec2-i2.8xlarge".
 2015-08-17 14:37:57 +02:00
Eelco Dolstra a6e3cb53b9 Use /usr/bin/env to find perl 
This is nicer in nix-shell.
 2015-08-17 14:18:20 +02:00
Eelco Dolstra d571e44b86 Keep stats for the Hydra auto scaler 
"hydra-queue-runner --status" now prints how many runnable and running
build steps exist for each machine type. This allows additional
machines to be provisioned based on the Hydra load.
 2015-08-17 13:50:41 +02:00
Eelco Dolstra b0c8eecd37 Merge branch 'build-ng' 2015-08-12 20:32:48 +02:00
Eelco Dolstra 62cd9d18b6 Check for a valid number of shares 2015-08-12 15:36:55 +02:00
Eelco Dolstra 006d105f93 Fix syntax error 2015-08-12 14:53:34 +02:00
Eelco Dolstra d4759c1da2 hydra-queue-runner: Detect changes to the scheduling shares 2015-08-12 13:17:56 +02:00
Eelco Dolstra 2e3899ed27 Don't set Expires header for logs of unfinished builds/steps 2015-08-12 12:22:14 +02:00
Eelco Dolstra 576dc0c120 For completeness, re-implement meta.schedulingPriority 2015-08-12 12:05:43 +02:00
Eelco Dolstra b7965df928 Load the queue in order of global priority 2015-08-11 02:14:34 +02:00
Eelco Dolstra 97f11baa8d Revive jobset scheduling 
(I.e. taking the jobset scheduling share into account.)
 2015-08-11 01:31:56 +02:00
Shea Levy 1705ca41e7 Remove unneeded camelcase 2015-08-10 13:59:22 -04:00
Shea Levy 163e696813 Copy-paste error 2015-08-10 13:52:40 -04:00
Shea Levy 882b6b3377 Pass a build's drv path as a store path 2015-08-10 13:48:09 -04:00
Shea Levy ce5ffa9fba Only pass the drv path if it is still valid 2015-08-10 13:47:39 -04:00
Eelco Dolstra 08739a2a5a Allow bumping an entire evaluation to the front of the queue 
This is mostly useful if we need to prioritize (say) a nixos-stable
eval that has some critical security bug fix.
 2015-08-10 18:57:59 +02:00
Eelco Dolstra eb13007fe6 Allow build to be bumped to the front of the queue via the web interface 
Builds now have a "Bump up" action. This will cause the queue runner
to prioritise the steps of the build above all other steps.
 2015-08-10 16:19:47 +02:00
Eelco Dolstra 27182c7c1d Start steps in order of ascending build ID 2015-08-10 16:19:47 +02:00
Shea Levy 2a240e458e Pass along drvPath and outputName for inputs that are previous builds. 
This allows importing the .drv and getting the same store paths as if the
input had been passed in as nix expressions defining a proper derivation.
 2015-08-10 08:02:10 -04:00
Eelco Dolstra 52ec971154 Don't render machine name if not applicable to step 2015-08-10 12:54:56 +02:00
Eelco Dolstra 593850b956 Fix potential race in dispatcher wakeup 2015-08-10 12:54:55 +02:00
Eelco Dolstra 6a1c950e94 Unindent 2015-08-10 11:33:22 +02:00
Eelco Dolstra f21b88e388 Remove superfluous check 2015-08-07 04:20:34 +02:00
Eelco Dolstra f1fbf8c605 Fix race in finishing builds that have been cancelled 2015-08-07 04:18:48 +02:00
Eelco Dolstra 90c462a222 Merge remote-tracking branch 'origin/master' into build-ng 
Conflicts:
	hydra-module.nix
 2015-08-04 14:30:22 +02:00
Shea Levy 7b7f189b3e Whoops, misread signature 2015-08-04 08:12:24 -04:00
Shea Levy a5b986cf33 Only pass the first value of each input in the inputs argument 
Multiple alts are on their way out
 2015-08-04 08:10:47 -04:00
Shea Levy 4d967dd17a hydra-eval-jobs: Pass all inputs as 'inputs' arg. 
If there is no input named 'inputs', hydra-eval-jobs now passes in a set
of lists, where each attribute corresponds to an input defined in the
jobset specification and each list element is a different input alt, as
an argument named 'inputs'.

Among other things, this allows for generic hydra expressions to be
shared amongst projects with similar structures but different sets of
specific inputs.
 2015-08-04 07:54:24 -04:00
Shea Levy d450d08929 buildInputToString: Use inputType attribute instead of type attribute 2015-08-04 06:50:04 -04:00
Eelco Dolstra 6f04299411 Allow downloading file by filename 
For instance, instead of

  http://.../build/3770911/download/4/source.tar.gz

you can get

  http://.../build/3770911/download/source.tar.gz

This is useful when file names are constant across builds but product
numbers are not.
 2015-07-31 17:50:22 +02:00
Shea Levy 07634e8862 buildInputToString: Pass along the input's type and urr 2015-07-31 09:47:44 -04:00
Eelco Dolstra ff3f5eb4d8 Fix remote building on Nix 1.10 2015-07-31 03:41:55 +02:00
Eelco Dolstra 5b9a288123 Workaround for RemoteStore not supporting cmdBuildDerivation yet 2015-07-31 03:39:20 +02:00
Eelco Dolstra 706746d4bf Fix build 2015-07-31 01:45:16 +02:00
Eelco Dolstra 4d26546d3c Add support for tracking custom metrics 
Builds can now emit metrics that Hydra will store in its database and
render as time series via flot charts. Typical applications are to
keep track of performance indicators, coverage percentages, artifact
sizes, and so on.

For example, a coverage build can emit the coverage percentage as
follows:

  echo "lineCoverage $pct %" > $out/nix-support/hydra-metrics

Graphs of all metrics for a job can be seen at

  http://.../job/<project>/<jobset>/<job>#tabs-charts

Specific metrics are also visible at

  http://.../job/<project>/<jobset>/<job>/metric/<metric>

The latter URL also allows getting the data in JSON format (e.g. via
"curl -H 'Accept: application/json'").
 2015-07-31 00:57:30 +02:00
Eelco Dolstra 9afaf322b3 Use latest DBIx::Class::Schema::Loader 2015-07-30 16:55:11 +02:00
aszlig 36cbdd1bd8
common.tt: Properly generate URL for /api/scmdiff. 
If Hydra isn't hosted on https://example.com/ but something like
https://example.com/hydra/, the URL for /api/scmdiff would have ended up
on /api/scmdiff rather than /hydra/api/scmdiff.

This is because we didn't use the URI resolver from the controller,
hence we're using it now to build up the whole URL including the query
string.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
 2015-07-22 12:00:15 +02:00
Eelco Dolstra c18fb0ad74 Temporarily disable machines after a connection failure 2015-07-21 15:58:47 +02:00
Eelco Dolstra 7e026d35f7 Split hydra-queue-runner.cc more 2015-07-21 15:14:17 +02:00
Eelco Dolstra 5370be9f52 hydra-queue-runner: Use cmdBuildDerivation 
See 1511aa9f48 and eda2f36c2a.
 2015-07-21 01:54:24 +02:00
Eelco Dolstra 62b1b095ad Handle IP addresses as machine names 2015-07-21 01:54:24 +02:00
Rob Vermaas fbd48f5684 Make cloning of jobsets work again. 
(cherry picked from commit 706551453800fb3a4bb3d8b681dad157a8cea98b)
 2015-07-14 09:07:10 +00:00
Eelco Dolstra 3ded87329d Keep track of how many threads are waiting 2015-07-10 19:10:14 +02:00
Eelco Dolstra 06d75699a7 Fix restarting a build 2015-07-10 16:56:53 +02:00
Eelco Dolstra 7f865a30d5 hydra-evaluator: Fix input change check 
Because inputs were processed in random order by inputsToArgs, the
inputs hash could be different every time, leading to unnecessary
re-evaluations.
 2015-07-10 16:44:06 +02:00
Eelco Dolstra 3e7bbec40b hydra-evaluator: Send statistics to statsd 2015-07-10 16:40:50 +02:00
Eelco Dolstra 5919e911db Don't show how long a machine has been idle 
Without an index on (machine, stoptime desc), this requires a
sequential scan. And adding a whole index for this seems
overkill. (Possibly the queue runner could maintain this info more
efficiently.)
 2015-07-10 15:41:57 +02:00
Eelco Dolstra 3bb9e17e5c IndexJobsetEvalsOnJobsetId: Only index jobsets with new builds 2015-07-10 15:41:57 +02:00
Eelco Dolstra b09f7e0989 Add page showing latest build steps 2015-07-10 15:41:57 +02:00
Eelco Dolstra 0da08df4eb Stream logs if possible and remove size limit 2015-07-08 19:05:17 +02:00
Eelco Dolstra d8acaf2181 Index BuildSteps on propagatedFrom 
This significantly speeds up deleting Builds, since it removes the
need for a sequential scan on BuildSteps.
 2015-07-08 12:12:44 +02:00
Eelco Dolstra bbee81efae Use triggers for all notifications on Builds table changes 2015-07-08 12:05:32 +02:00
Eelco Dolstra 89fb723ace Notify the queue runner when a build is deleted 2015-07-08 11:43:35 +02:00
Eelco Dolstra 95c4294560 Allow cancelling builds marked as busy 
Note that if there are active build *steps*, this won't cancel them.
 2015-07-07 14:08:46 +02:00
Eelco Dolstra 35b7c4f82b Allow only 1 thread to send a closure to a given machine at the same time 
This prevents a race where multiple threads see that machine X is
missing path P, and start sending it concurrently. Nix handles this
correctly, but it's still wasteful (especially for the case where P ==
GHC).

A more refined scheme would be to have per machine, per path locks.
 2015-07-07 14:06:48 +02:00
Eelco Dolstra 16696a4aee Namespace cleanup 2015-07-07 10:29:43 +02:00
Eelco Dolstra 63745b8e25 Move buildRemote() into State 2015-07-07 10:25:33 +02:00
Eelco Dolstra df29527531 Refactor 2015-07-07 10:17:21 +02:00
Eelco Dolstra dd4f6e695e Merge branch 'master' into build-ng 2015-07-06 17:17:51 +02:00
Eelco Dolstra ccf6e6062c Store full Mercurial revision hashes 2015-07-06 17:17:17 +02:00
Eelco Dolstra 309ef5baa9 Merge branch 'master' into build-ng 2015-07-06 15:57:09 +02:00
Eelco Dolstra b85e9ef1cd Support using Git revisions as branch names 2015-07-06 15:56:24 +02:00
Eelco Dolstra b03de925cb Allow a jobset to be created from an evaluation 
Fixes #150.
 2015-07-06 15:56:20 +02:00
Eelco Dolstra dffb629b8a Unify Hydra's NixOS module with the one used for hydra.nixos.org 
In particular, the queue runner and web server now run under different
UIDs.
 2015-07-02 01:01:44 +02:00
Eelco Dolstra 3e0f5f664a GitInput plugin: Don't clone during getCommits 
This doesn't work if hydra-queue-runner has no write access to the scm
directory, and in any case races with the evaluator.
 2015-07-02 00:44:40 +02:00
Eelco Dolstra ae52fc7f61 Remove display of queue runner log file (it no longer exists) 2015-07-02 00:18:33 +02:00
Eelco Dolstra e35b704d80 Drop the 5 minute minimum interval between triggered evals 2015-07-01 14:45:39 +02:00
Eelco Dolstra 85a1ce99c9 Only include Persona JS when Persona is enabled 2015-07-01 14:24:18 +02:00
Eelco Dolstra 3c665dac82 Remove superfluous HYDRA_LOGO environment variable 2015-07-01 11:34:19 +02:00
Eelco Dolstra 7e6135a8c6 Don't repeat links to build step logs 
Hydra only stores the last log for a particular derivation, so only
show log links for the last one.
 2015-06-30 00:27:31 +02:00
Eelco Dolstra 2ece42b2b9 Support preferLocalBuild 
Derivations with "preferLocalBuild = true" can now be executed on
specific machines (typically localhost) by setting the mandary system
features field to include "local". For example:

  localhost x86_64-linux,i686-linux - 10 100 - local

says that "localhost" can *only* do builds with "preferLocalBuild =
true". The speed factor of 100 will make the machine almost always win
over other machines.
 2015-06-30 00:20:19 +02:00
Eelco Dolstra 008d610467 getQueuedBuilds(): Don't catch errors while loading a build from the queue 
Otherwise we never recover from reset daemon connections, e.g.

  hydra-queue-runner[16106]: while loading build 599369: cannot start daemon worker: reading from file: Connection reset by peer
  hydra-queue-runner[16106]: while loading build 599236: writing to file: Broken pipe
  ...

The error is now handled queueMonitor(), causing the next call to
queueMonitorLoop() to create a new connection.
 2015-06-26 21:06:35 +02:00
Eelco Dolstra f5e5a1b96e Don't wake up the queue runner for cached evals 2015-06-26 20:59:14 +02:00
Eelco Dolstra 401f5bdce2 Add a unit for hydra-send-stats 2015-06-26 15:24:12 +02:00
Eelco Dolstra 9a041f9a36 Restart builds failed due to unsupported system type 2015-06-26 11:28:38 +02:00
Eelco Dolstra 2f4676bd97 JSONObject doesn't handle 64-bit integers 2015-06-25 16:59:48 +02:00
Eelco Dolstra c54a04688e Fix email sender address when notification_sender is not set 2015-06-25 16:49:01 +02:00
Eelco Dolstra c6fcce3b3b Moar stats 2015-06-25 16:47:39 +02:00
Eelco Dolstra 18a3c3ff1c Update "make check" for the new queue runner 
Also, if the machines file contains an entry for localhost, then run
"nix-store --serve" directly, without going through SSH.
 2015-06-25 16:47:39 +02:00
Eelco Dolstra 32210905d8 Automatically reload $NIX_REMOTE_SYSTEMS when it changes 
Otherwise, you'd have to restart the queue runner to add or remove
machines.
 2015-06-25 16:47:25 +02:00
Eelco Dolstra 1a0e1eb5a0 More stats 2015-06-24 13:19:27 +02:00
Eelco Dolstra 3f8891b6ff Fix incorrect debug message 2015-06-23 17:53:15 +02:00
Eelco Dolstra 62219adaf3 Send queue runner stats to statsd 
This is currently done by a separate program that periodically
calls "hydra-queue-runner --status". Eventually, I'll do this
in the queue runner directly.

Fixes #220.
 2015-06-23 14:56:43 +02:00
Eelco Dolstra af5cbe97aa createStep(): Cache finished derivations 
This gets rid of a lot of redundant calls to readDerivation().
 2015-06-23 03:25:31 +02:00
Eelco Dolstra 681f63a382 Typo 2015-06-23 02:15:11 +02:00
Eelco Dolstra 524ee295e0 Fix sending notifications in the successful case 2015-06-23 02:13:06 +02:00
Eelco Dolstra 4db7c51b5c Rate-limit the number of threads copying closures at the same time 
Having a hundred threads doing I/O at the same time is bad on magnetic
disks because of the excessive disk seeks. So allow only 4 threads to
copy closures in parallel.
 2015-06-23 01:49:14 +02:00
Eelco Dolstra a317d24b29 hydra-queue-runner: Send build notifications 
Since our notification plugins are written in Perl, sending
notification from C++ requires a small Perl helper named
‘hydra-notify’.
 2015-06-23 00:14:49 +02:00
Eelco Dolstra 5312e1209b Keep per-machine stats 2015-06-22 17:11:17 +02:00
Eelco Dolstra d06366e7cf Remove obsolete comment 2015-06-22 16:59:50 +02:00
Eelco Dolstra e069ee960e Doh 2015-06-22 16:58:40 +02:00
Eelco Dolstra e32ee3d5b9 Remove hydra-build and the old hydra-queue-runner 2015-06-22 15:43:15 +02:00
Eelco Dolstra 41ba7418e2 hydra-queue-runner: More stats 2015-06-22 15:34:33 +02:00
Eelco Dolstra 62b53a0a47 Guard against concurrent invocations of hydra-queue-runner 2015-06-22 14:24:03 +02:00
Eelco Dolstra fbd7c02217 Periodically dump/log status 2015-06-22 14:15:43 +02:00
Eelco Dolstra 4f4141e1db Add command ‘hydra-queue-runner --status’ to show current status 2015-06-22 14:06:44 +02:00
Eelco Dolstra 44a2b74f5a Keep track of the number of build steps that are being built 
(As opposed to being in the closure copying stage.)
 2015-06-22 11:23:00 +02:00
Eelco Dolstra fed71d3fe9 Move "created" field into Step::State 2015-06-22 11:07:52 +02:00
Eelco Dolstra 90a08db241 hydra-queue-runner: Fix assertion failure 2015-06-22 10:59:07 +02:00
Eelco Dolstra d744362e4a hydra-queue-runner: Fix segfault sorting machines by load 
While sorting machines by load, the load of a machine
(machine->currentJobs) can be changed by other threads. If that
happens, the comparator is no longer a proper ordering, in which case
std::sort() can segfault. So we now make a copy of currentJobs before
sorting.
 2015-06-21 16:21:42 +02:00
Eelco Dolstra a0eff6fc15 Fix machine selection 2015-06-19 17:45:26 +02:00
Eelco Dolstra 81abb6e166 Improve parsing of hydra-build-products 2015-06-19 17:20:20 +02:00
Eelco Dolstra e13477bdf2 Robustness 2015-06-19 16:35:49 +02:00
Eelco Dolstra f196967c43 Don't create a propagated build step to the same build 2015-06-19 15:33:37 +02:00
Eelco Dolstra 7afc61691b Doh 2015-06-19 15:27:49 +02:00
Eelco Dolstra 133d298e26 Asynchronously compress build logs 2015-06-19 15:06:12 +02:00
Eelco Dolstra 8e408048e2 Create build step for non-top-level cached failures 
This fixes the missing build step on failures like

  http://hydra.nixos.org/build/23222231
 2015-06-19 11:33:15 +02:00
Eelco Dolstra 77c8bfd392 Improve logging for aborts 2015-06-19 10:37:22 +02:00
Eelco Dolstra 8db1ae2855 Less verbosity 2015-06-18 17:43:13 +02:00
Eelco Dolstra 89b629eeb1 Fix finishing steps that are not top-level of any build 2015-06-18 17:37:35 +02:00
Eelco Dolstra 9cdbff2fdf Handle concurrent finishing of the same build 
There is a slight possibility that the queue monitor and a builder
thread simultaneously decide to mark a build as finished. That's fine,
as long as we ensure the DB update is idempotent (as ensured by doing
"update Builds set finished = 1 ... where finished = 0").
 2015-06-18 17:12:51 +02:00
Eelco Dolstra 948473c909 Fix race between the queue monitor and the builder threads 2015-06-18 16:30:28 +02:00
Eelco Dolstra 9c03b11ca8 Simplify retry handling 2015-06-18 14:51:50 +02:00
Eelco Dolstra e039f5f840 Create failed build steps for cached failures 2015-06-18 04:35:37 +02:00
Eelco Dolstra 92ea800cfb Set finishedInDB in a few more places 2015-06-18 04:19:21 +02:00
Eelco Dolstra 47367451c7 hydra-queue-runner: Set isCachedBuild 2015-06-18 03:28:58 +02:00
Eelco Dolstra 8257812d0a Acquire exclusive table lock earlier 2015-06-18 02:44:29 +02:00
Eelco Dolstra 69be3cfe93 hydra-queue-runner: Handle status queries on the main thread 
Doing it on the queue monitor thread was problematic because
processing the queue can take a while.
 2015-06-18 01:57:01 +02:00
Eelco Dolstra a40ca6b76e hydra-queue-runner: Improve dispatcher 
We now take the machine speed factor into account, just like
build-remote.pl.
 2015-06-18 01:52:20 +02:00
Eelco Dolstra 3855131185 hydra-queue-runner: Improve SSH flags 2015-06-18 00:50:48 +02:00
Eelco Dolstra f57d0b0c54 hydra-queue-runner: Maintain count of active build steps 2015-06-18 00:24:56 +02:00
Eelco Dolstra 59dae60558 hydra-queue-runner: More stats 2015-06-17 22:38:12 +02:00
Eelco Dolstra ec8e8edc86 hydra-queue-runner: Handle $HYDRA_DBI 2015-06-17 22:11:01 +02:00
Eelco Dolstra 4d9c74335d Add forgotten file 2015-06-17 21:39:28 +02:00
Eelco Dolstra ce9e859a9c hydra-queue-runner: Implement --unlock 2015-06-17 21:35:20 +02:00
Eelco Dolstra ca48818b30 Fix remote building 2015-06-17 17:28:59 +02:00
Eelco Dolstra 11be780948 Handle failure with output 2015-06-17 17:11:42 +02:00
Eelco Dolstra b1a75c7f63 getQueuedBuilds(): Handle dependent builds first 
If a build A depends on a derivation that is the top-level derivation
of some build B, then we should process B before A (meaning we
shouldn't make the derivation runnable before B has been
added). Otherwise, the derivation will be "accounted" to A rather than
B (so the build step will show up in the wrong build).
 2015-06-17 14:46:02 +02:00
Eelco Dolstra c6d504edbb Handle SSH hosts without a @ 2015-06-17 13:49:18 +02:00
Eelco Dolstra 745efce828 hydra-queue-runner: Implement timeouts 
Also, keep track of timeouts in the database as a distinct build
status.
 2015-06-17 13:32:33 +02:00
Eelco Dolstra 2da4987bc2 Don't lock the CPU 2015-06-17 11:48:38 +02:00
Eelco Dolstra b91a616520 Automatically retry aborted builds 
Aborted builds are now put back on the runnable queue and retried
after a certain time interval (currently 60 seconds for the first
retry, then tripled on each subsequent retry).
 2015-06-17 11:45:20 +02:00
Eelco Dolstra e02654b3a0 Prefer cached failure over unsupported system type 2015-06-16 18:00:39 +02:00
Eelco Dolstra a984c0badc Merge branch 'master' into build-ng 2015-06-15 18:21:07 +02:00
Eelco Dolstra 42e7301c08 Add status dump facility 
Doing

  $ psql hydra -c 'notify dump_status'

will cause hydra-queue-runner to dump some internal status info on
stderr.
 2015-06-15 18:20:14 +02:00
Eelco Dolstra dd104f14ea Make the queue monitor more robust, and better debug output 2015-06-15 16:54:52 +02:00
Eelco Dolstra 147eb4fd15 Support requiredSystemFeatures 2015-06-15 16:33:50 +02:00
Eelco Dolstra 508ab7f8a2 Tweak build steps 2015-06-15 15:48:05 +02:00
Eelco Dolstra 21aaa0596b Fail builds with previously failed steps early 2015-06-15 15:31:42 +02:00
Eelco Dolstra c00bf7cd1a Check non-runnable steps for unsupported system type 2015-06-15 15:13:03 +02:00
Eelco Dolstra 5019fceb20 Add a error type for "unsupported system type" 2015-06-15 15:07:04 +02:00
Eelco Dolstra 541fbd62cc Immediately abort builds that require an unsupported system type 2015-06-15 14:51:49 +02:00
Eelco Dolstra f9cd5adae8 Queue monitor: Get only the fields we need 2015-06-11 18:09:50 +02:00
Eelco Dolstra c974fb893b Support cancelling builds 2015-06-11 18:07:45 +02:00
Eelco Dolstra c08883966c Use PostgreSQL notifications for queue events 
Hydra-queue-runner now no longer polls the queue periodically, but
instead sleeps until it receives a notification from PostgreSQL about
a change to the queue (build added, build cancelled or build
restarted).

Also, for the "build added" case, we now only check for builds with an
ID greater than the previous greatest ID. This is much more efficient
if the queue is large.
 2015-06-11 17:41:59 +02:00
Eelco Dolstra 672bbb1c67 hydra-update-gc-roots: Get Builds and BuildOutputs in the same query 
This greatly reduces the number of roundtrips to the database.
 2015-06-11 14:10:21 +02:00
Eelco Dolstra 9989a90e99 Keep the most recent successful build of current jobs 
Fixes #140.
 2015-06-11 14:10:21 +02:00