build-remote: Misc cleanup
This commit is contained in:
Eelco Dolstra
parent
2f992692e2
commit
5a1fb03b8f
1 changed files with 41 additions and 48 deletions
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@ -17,13 +17,12 @@
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#include "derivations.hh"
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using namespace nix;
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using std::cerr;
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using std::cin;
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static void handle_alarm(int sig) {
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static void handleAlarm(int sig) {
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}
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class machine {
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class Machine {
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const std::set<string> supportedFeatures;
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const std::set<string> mandatoryFeatures;
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@ -31,8 +30,8 @@ public:
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const string hostName;
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const std::vector<string> systemTypes;
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const string sshKey;
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const unsigned long long maxJobs;
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const unsigned long long speedFactor;
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const unsigned int maxJobs;
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const unsigned int speedFactor;
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bool enabled;
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bool allSupported(const std::set<string> & features) const {
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@ -50,28 +49,29 @@ public:
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});
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}
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machine(decltype(hostName) hostName,
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Machine(decltype(hostName) hostName,
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decltype(systemTypes) systemTypes,
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decltype(sshKey) sshKey,
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decltype(maxJobs) maxJobs,
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decltype(speedFactor) speedFactor,
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decltype(supportedFeatures) supportedFeatures,
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decltype(mandatoryFeatures) mandatoryFeatures) :
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supportedFeatures{std::move(supportedFeatures)},
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mandatoryFeatures{std::move(mandatoryFeatures)},
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hostName{std::move(hostName)},
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systemTypes{std::move(systemTypes)},
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sshKey{std::move(sshKey)},
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maxJobs{std::move(maxJobs)},
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speedFactor{speedFactor == 0 ? 1 : std::move(speedFactor)},
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enabled{true} {};
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supportedFeatures(supportedFeatures),
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mandatoryFeatures(mandatoryFeatures),
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hostName(hostName),
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systemTypes(systemTypes),
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sshKey(sshKey),
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maxJobs(maxJobs),
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speedFactor(std::max(1U, speedFactor)),
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enabled(true)
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{};
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};;
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static std::vector<machine> read_conf()
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static std::vector<Machine> readConf()
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{
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auto conf = getEnv("NIX_REMOTE_SYSTEMS", SYSCONFDIR "/nix/machines");
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auto machines = std::vector<machine>{};
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auto machines = std::vector<Machine>{};
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auto lines = std::vector<string>{};
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try {
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lines = tokenizeString<std::vector<string>>(readFile(conf), "\n");
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@ -87,10 +87,8 @@ static std::vector<machine> read_conf()
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}
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auto tokens = tokenizeString<std::vector<string>>(line);
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auto sz = tokens.size();
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if (sz < 4) {
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throw new FormatError(format("Bad machines.conf file %1%")
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% conf);
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}
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if (sz < 4)
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throw FormatError("bad machines.conf file ‘%1%’", conf);
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machines.emplace_back(tokens[0],
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tokenizeString<std::vector<string>>(tokens[1], ","),
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tokens[2],
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@ -108,7 +106,7 @@ static std::vector<machine> read_conf()
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static string currentLoad;
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static AutoCloseFD openSlotLock(const machine & m, unsigned long long slot)
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static AutoCloseFD openSlotLock(const Machine & m, unsigned long long slot)
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{
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std::ostringstream fn_stream(currentLoad, std::ios_base::ate | std::ios_base::out);
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fn_stream << "/";
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@ -126,15 +124,14 @@ int main (int argc, char * * argv)
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{
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return handleExceptions(argv[0], [&]() {
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initNix();
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/* Ensure we don't get any SSH passphrase or host key popups. */
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if (putenv(display_env) == -1 ||
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putenv(ssh_env) == -1) {
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throw SysError("Setting SSH env vars");
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}
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putenv(ssh_env) == -1)
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throw SysError("setting SSH env vars");
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if (argc != 4) {
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if (argc != 4)
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throw UsageError("called without required arguments");
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}
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auto store = openStore();
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@ -147,15 +144,14 @@ int main (int argc, char * * argv)
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std::shared_ptr<Store> sshStore;
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AutoCloseFD bestSlotLock;
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auto machines = read_conf();
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auto machines = readConf();
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string drvPath;
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string hostName;
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for (string line; getline(cin, line);) {
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auto tokens = tokenizeString<std::vector<string>>(line);
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auto sz = tokens.size();
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if (sz != 3 && sz != 4) {
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throw Error(format("invalid build hook line %1%") % line);
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}
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if (sz != 3 && sz != 4)
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throw Error("invalid build hook line ‘%1%’", line);
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auto amWilling = tokens[0] == "1";
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auto neededSystem = tokens[1];
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drvPath = tokens[2];
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@ -174,7 +170,7 @@ int main (int argc, char * * argv)
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bool rightType = false;
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machine * bestMachine = nullptr;
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Machine * bestMachine = nullptr;
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unsigned long long bestLoad = 0;
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for (auto & m : machines) {
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if (m.enabled && std::find(m.systemTypes.begin(),
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@ -221,11 +217,10 @@ int main (int argc, char * * argv)
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}
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if (!bestSlotLock) {
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if (rightType && !canBuildLocally) {
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cerr << "# postpone\n";
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} else {
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cerr << "# decline\n";
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}
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if (rightType && !canBuildLocally)
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std::cerr << "# postpone\n";
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else
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std::cerr << "# decline\n";
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break;
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}
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@ -241,37 +236,35 @@ int main (int argc, char * * argv)
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sshStore = openStore("ssh://" + bestMachine->hostName + "?key=" + bestMachine->sshKey);
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hostName = bestMachine->hostName;
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} catch (std::exception & e) {
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cerr << e.what() << '\n';
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cerr << "unable to open SSH connection to ‘" << bestMachine->hostName << "’, trying other available machines...\n";
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printError("unable to open SSH connection to ‘%s’: %s; trying other available machines...",
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bestMachine->hostName, e.what());
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bestMachine->enabled = false;
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continue;
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}
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goto connected;
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}
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}
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connected:
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cerr << "# accept\n";
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std::cerr << "# accept\n";
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string line;
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if (!getline(cin, line)) {
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if (!getline(cin, line))
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throw Error("hook caller didn't send inputs");
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}
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auto inputs = tokenizeString<std::list<string>>(line);
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if (!getline(cin, line)) {
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if (!getline(cin, line))
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throw Error("hook caller didn't send outputs");
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}
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auto outputs = tokenizeString<Strings>(line);
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AutoCloseFD uploadLock = openLockFile(currentLoad + "/" + hostName + ".upload-lock", true);
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auto old = signal(SIGALRM, handle_alarm);
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auto old = signal(SIGALRM, handleAlarm);
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alarm(15 * 60);
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if (!lockFile(uploadLock.get(), ltWrite, true)) {
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cerr << "somebody is hogging the upload lock for " << hostName << ", continuing...\n";
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}
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if (!lockFile(uploadLock.get(), ltWrite, true))
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printError("somebody is hogging the upload lock for ‘%s’, continuing...");
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alarm(0);
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signal(SIGALRM, old);
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copyPaths(store, ref<Store>(sshStore), inputs);
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uploadLock = -1;
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cerr << "building ‘" << drvPath << "’ on ‘" << hostName << "’\n";
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printError("building ‘%s’ on ‘%s’", drvPath, hostName);
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sshStore->buildDerivation(drvPath, readDerivation(drvPath));
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std::remove_if(outputs.begin(), outputs.end(), [=](const Path & path) { return store->isValidPath(path); });
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