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nix eval-hydra-jobs: Improve error handling

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This commit is contained in:
Eelco Dolstra 2020-02-17 13:36:13 +01:00
parent 144bb3ef7d
commit c6e63065f3
1 changed files with 20 additions and 10 deletions
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30
src/nix/eval-hydra-jobs.cc
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@ -211,6 +211,7 @@ struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
std::set<std::string> todo{""};
std::set<std::string> active;
nlohmann::json result;
std::exception_ptr exc;
};
std::condition_variable wakeup;
@ -239,9 +240,10 @@ struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
{
try {
worker(*to, *from);
} catch (Error & e) {
printError("unexpected worker error: %s", e.msg());
_exit(1);
} catch (std::exception & e) {
nlohmann::json err;
err["error"] = e.what();
writeLine(to->get(), err.dump());
}
},
ProcessOptions { .allowVfork = false });
@ -255,8 +257,10 @@ struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
if (s == "restart") {
pid = -1;
continue;
} else if (s != "next")
throw Error("unexpected worker request: %s", s);
} else if (s != "next") {
auto json = nlohmann::json::parse(s);
throw Error("worker error: %s", (std::string) json["error"]);
}
/* Wait for a job name to become available. */
std::string attrPath;
@ -264,7 +268,7 @@ struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
while (true) {
checkInterrupt();
auto state(state_.lock());
if (state->todo.empty() && state->active.empty()) {
if ((state->todo.empty() && state->active.empty()) || state->exc) {
writeLine(to.get(), "exit");
return;
}
@ -319,9 +323,10 @@ struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
wakeup.notify_all();
}
}
} catch (Error & e) {
printError("unexpected handler thread error: %s", e.msg());
abort();
} catch (...) {
auto state(state_.lock());
state->exc = std::current_exception();
wakeup.notify_all();
}
};
@ -332,7 +337,12 @@ struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
for (auto & thread : threads)
thread.join();
if (json) std::cout << state_.lock()->result.dump(2) << "\n";
auto state(state_.lock());
if (state->exc)
std::rethrow_exception(state->exc);
if (json) std::cout << state->result.dump(2) << "\n";
}
};