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* When using a build hook, distinguish between transient failures

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(e.g. an SSH connection problem) and permanent failures (i.e. the
  builder failed).  This matters to Hydra (it wants to know whether it
  makes sense to retry a build).
This commit is contained in:
Eelco Dolstra 2009-01-13 11:39:09 +00:00
parent 4ce692df88
commit 019176137f
2 changed files with 30 additions and 6 deletions
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12
scripts/build-remote.pl.in
View file

@ -192,8 +192,16 @@ my $buildFlags = "--max-silent-time $maxSilentTime";
# connection dies. Without it, the remote process might continue to
# run indefinitely (that is, until it next tries to write to
# stdout/stderr).
system("ssh -tt $sshOpts $hostName 'nix-store -rvvK $buildFlags $drvPath'") == 0
or die "remote build on $hostName failed: $?";
if (system("ssh -tt $sshOpts $hostName 'nix-store -rvvK $buildFlags $drvPath'") != 0) {
# If we couldn't run ssh or there was an ssh problem (indicated by
# exit code 255), then we return exit code 1; otherwise we assume
# that the builder failed, which we indicated to Nix using exit
# code 100. It's important to distinguish between the two because
# the first is a transient failure and the latter is permanent.
my $res = $? == -1 || ($? >> 8) == 255 ? 1 : 100;
print STDERR "remote build on $hostName failed: $?";
exit $res;
}
print "REMOTE BUILD DONE: $drvPath on $hostName\n";

16
src/libstore/build.cc
View file

@ -648,6 +648,9 @@ private:
/* Pipe for the builder's standard output/error. */
Pipe logPipe;
/* Whether we're building using a build hook. */
bool usingBuildHook;
/* Pipes for talking to the build hook (if any). */
Pipe toHook;
Pipe fromHook;
@ -970,6 +973,7 @@ void DerivationGoal::tryToBuild()
try {
/* Is the build hook willing to accept this job? */
usingBuildHook = true;
switch (tryBuildHook()) {
case rpAccept:
/* Yes, it has started doing so. Wait until we get
@ -1003,6 +1007,7 @@ void DerivationGoal::tryToBuild()
/* Acquire locks and such. If we then see that the build has
been done by somebody else, we're done. */
usingBuildHook = false;
PrepareBuildReply preply = prepareBuild();
if (preply == prDone) {
amDone(ecSuccess);
@ -1019,6 +1024,10 @@ void DerivationGoal::tryToBuild()
} catch (BuildError & e) {
printMsg(lvlError, e.msg());
if (printBuildTrace) {
if (usingBuildHook)
printMsg(lvlError, format("@ hook-failed %1% %2% %3% %4%")
% drvPath % drv.outputs["out"].path % 0 % e.msg());
else
printMsg(lvlError, format("@ build-failed %1% %2% %3% %4%")
% drvPath % drv.outputs["out"].path % 0 % e.msg());
}
@ -1122,6 +1131,13 @@ void DerivationGoal::buildDone()
} catch (BuildError & e) {
printMsg(lvlError, e.msg());
if (printBuildTrace) {
/* When using a build hook, the hook will return a
remote build failure using exit code 100. Anything
else is a hook problem. */
if (usingBuildHook && (!WIFEXITED(status) || WEXITSTATUS(status) != 100))
printMsg(lvlError, format("@ hook-failed %1% %2% %3% %4%")
% drvPath % drv.outputs["out"].path % status % e.msg());
else
printMsg(lvlError, format("@ build-failed %1% %2% %3% %4%")
% drvPath % drv.outputs["out"].path % status % e.msg());
}