lix api changes

src/hydra-eval-jobs/hydra-eval-jobs.cc

@@ -8,6 +8,7 @@
 #include "eval.hh"
 #include "eval-inline.hh"
 #include "eval-settings.hh"
+#include "signals.hh"
 #include "util.hh"
 #include "get-drvs.hh"
 #include "globals.hh"
@@ -160,7 +161,7 @@ static void worker(
 
         auto s = readLine(from.get());
         if (s == "exit") break;
-        if (!hasPrefix(s, "do ")) abort();
+        if (!s.starts_with("do ")) abort();
         std::string attrPath(s, 3);
 
         debug("worker process %d at '%s'", getpid(), attrPath);
@@ -183,7 +184,7 @@ static void worker(
                     !experimentalFeatureSettings.isEnabled(Xp::CaDerivations));
 
                 if (drv->querySystem() == "unknown")
-                    throw EvalError("derivation must have a 'system' attribute");
+                    state.error<EvalError>("derivation must have a 'system' attribute").debugThrow();
 
                 auto drvPath = state.store->printStorePath(drv->requireDrvPath());
 
@@ -206,7 +207,7 @@ static void worker(
                 if (a && state.forceBool(*a->value, a->pos, "while evaluating the `_hydraAggregate` attribute")) {
                     auto a = v->attrs->get(state.symbols.create("constituents"));
                     if (!a)
-                        throw EvalError("derivation must have a ‘constituents’ attribute");
+                        state.error<EvalError>("derivation must have a ‘constituents’ attribute").debugThrow();
 
                     NixStringContext context;
                     state.coerceToString(a->pos, *a->value, context, "while evaluating the `constituents` attribute", true, false);
@@ -272,7 +273,7 @@ static void worker(
             else if (v->type() == nNull)
                 ;
 
-            else throw TypeError("attribute '%s' is %s, which is not supported", attrPath, showType(*v));
+            else state.error<TypeError>("attribute '%s' is %s, which is not supported", attrPath, showType(*v)).debugThrow();
 
         } catch (EvalError & e) {
             auto msg = e.msg();
@@ -379,8 +380,7 @@ int main(int argc, char * * argv)
                                     // what's shown in the Hydra UI.
                                     writeLine(to->get(), "restart");
                                 }
-                            },
-                            ProcessOptions { .allowVfork = false });
+                            });
                         from = std::move(fromPipe.readSide);
                         to = std::move(toPipe.writeSide);
                         debug("created worker process %d", pid);
@@ -531,7 +531,7 @@ int main(int argc, char * * argv)
 
                 if (brokenJobs.empty()) {
                     std::string drvName(drvPath.name());
-                    assert(hasSuffix(drvName, drvExtension));
+                    assert(drvName.ends_with(drvExtension));
                     drvName.resize(drvName.size() - drvExtension.size());
 
                     auto hashModulo = hashDerivationModulo(*store, drv, true);

src/hydra-evaluator/hydra-evaluator.cc

@@ -2,6 +2,7 @@
 #include "hydra-config.hh"
 #include "pool.hh"
 #include "shared.hh"
+#include "signals.hh"
 
 #include <algorithm>
 #include <thread>
@@ -11,7 +12,10 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 
+#include <boost/format.hpp>
+
 using namespace nix;
+using boost::format;
 
 typedef std::pair<std::string, std::string> JobsetName;
 
@@ -505,7 +509,7 @@ int main(int argc, char * * argv)
         parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
             if (*arg == "--unlock")
                 unlock = true;
-            else if (hasPrefix(*arg, "-"))
+            else if (arg->starts_with("-"))
                 return false;
             args.push_back(*arg);
             return true;

src/hydra-queue-runner/build-remote.cc

@@ -93,11 +93,11 @@ static void openConnection(::Machine::ptr machine, Path tmpDir, int stderrFD, SS
         throw SysError("cannot start %s", pgmName);
     });
 
-    to.readSide = -1;
-    from.writeSide = -1;
+    to.readSide.reset();
+    from.writeSide.reset();
 
-    child.in = to.writeSide.release();
-    child.out = from.readSide.release();
+    child.in = AutoCloseFD{to.writeSide.release()};
+    child.out = AutoCloseFD{from.readSide.release()};
 
     // XXX: determine the actual max value we can use from /proc.
     int pipesize = 1024 * 1024;
@@ -186,7 +186,7 @@ static std::pair<Path, AutoCloseFD> openLogFile(const std::string & logDir, cons
 
     createDirs(dirOf(logFile));
 
-    AutoCloseFD logFD = open(logFile.c_str(), O_CREAT | O_TRUNC | O_WRONLY, 0666);
+    AutoCloseFD logFD{open(logFile.c_str(), O_CREAT | O_TRUNC | O_WRONLY, 0666)};
     if (!logFD) throw SysError("creating log file ‘%s’", logFile);
 
     return {std::move(logFile), std::move(logFD)};
@@ -588,7 +588,7 @@ void State::buildRemote(ref<Store> destStore,
         if (ftruncate(logFD.get(), 0) == -1)
             throw SysError("truncating log file ‘%s’", result.logFile);
 
-        logFD = -1;
+        logFD.reset();
 
         /* Do the build. */
         printMsg(lvlDebug, "building ‘%s’ on ‘%s’",
@@ -684,7 +684,7 @@ void State::buildRemote(ref<Store> destStore,
         }
 
         /* Shut down the connection. */
-        child.in = -1;
+        child.in.reset();
         child.sshPid.wait();
 
     } catch (Error & e) {

src/hydra-queue-runner/hydra-queue-runner.cc

@@ -11,10 +11,10 @@
 
 #include <nlohmann/json.hpp>
 
+#include "signals.hh"
 #include "state.hh"
 #include "hydra-build-result.hh"
 #include "store-api.hh"
-#include "remote-store.hh"
 
 #include "globals.hh"
 #include "hydra-config.hh"
@@ -930,20 +930,6 @@ void State::run(BuildID buildOne)
         }
     }).detach();
 
-    /* Make sure that old daemon connections are closed even when
-       we're not doing much. */
-    std::thread([&]() {
-        while (true) {
-            sleep(10);
-            try {
-                if (auto remoteStore = getDestStore().dynamic_pointer_cast<RemoteStore>())
-                    remoteStore->flushBadConnections();
-            } catch (std::exception & e) {
-                printMsg(lvlError, "connection flush thread: %s", e.what());
-            }
-        }
-    }).detach();
-
     /* Monitor the database for status dump requests (e.g. from
        ‘hydra-queue-runner --status’). */
     while (true) {

src/hydra-queue-runner/queue-monitor.cc

@@ -299,7 +299,7 @@ bool State::getQueuedBuilds(Connection & conn,
         try {
             createBuild(build);
         } catch (Error & e) {
-            e.addTrace({}, hintfmt("while loading build %d: ", build->id));
+            e.addTrace({}, HintFmt("while loading build %d: ", build->id));
             throw;
         }
 

src/libhydra/db.hh

@@ -17,7 +17,7 @@ struct Connection : pqxx::connection
         std::string lower_prefix = "dbi:Pg:";
         std::string upper_prefix = "DBI:Pg:";
 
-        if (hasPrefix(s, lower_prefix) || hasPrefix(s, upper_prefix)) {
+        if (s.starts_with(lower_prefix) || s.starts_with(upper_prefix)) {
             return concatStringsSep(" ", tokenizeString<Strings>(std::string(s, lower_prefix.size()), ";"));
         }