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Add an option to limit the log output of builders

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This is mostly useful for Hydra to deal with builders that get stuck
in an infinite loop writing data to stdout/stderr.
This commit is contained in:
Eelco Dolstra 2013-09-02 11:58:18 +02:00
parent afc6c1bad6
commit efe4289464
4 changed files with 34 additions and 0 deletions
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13
src/libstore/build.cc
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@ -813,6 +813,9 @@ private:
BZFILE * bzLogFile;
AutoCloseFD fdLogFile;
/* Number of bytes received from the builder's stdout/stderr. */
unsigned long logSize;
/* Pipe for the builder's standard output/error. */
Pipe builderOut;
@ -2403,6 +2406,8 @@ string drvsLogDir = "drvs";
Path DerivationGoal::openLogFile()
{
logSize = 0;
if (!settings.keepLog) return "";
string baseName = baseNameOf(drvPath);
@ -2478,6 +2483,14 @@ void DerivationGoal::handleChildOutput(int fd, const string & data)
if ((hook && fd == hook->builderOut.readSide) ||
(!hook && fd == builderOut.readSide))
{
logSize += data.size();
if (settings.maxLogSize && logSize > settings.maxLogSize) {
printMsg(lvlError,
format("%1% killed after writing more than %2% bytes of log output")
% getName() % settings.maxLogSize);
cancel(true); // not really a timeout, but close enough
return;
}
if (verbosity >= settings.buildVerbosity)
writeToStderr(data);
if (bzLogFile) {