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build-remote: extract error message printer

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Change-Id: I5eab56be27d6178caa341fb2ff1f52475252aab8
This commit is contained in:
eldritch horrors
2025-07-09 14:20:51 +02:00
parent fc3261c340
commit 44895d1ed5
1 changed files with 43 additions and 32 deletions
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lix/legacy/build-remote.cc
+43 -32
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@@ -53,6 +53,43 @@ static bool allSupportedLocally(Store & store, const std::set<std::string>& requ
return true;
}
static void printSelectionFailureMessage(
Verbosity level,
const std::string_view drvstr,
const Machines & machines,
const std::string & neededSystem,
const std::set<std::string> & requiredFeatures
)
{
std::string machinesFormatted;
for (auto & m : machines) {
machinesFormatted += HintFmt(
"\n([%s], %s, [%s], [%s])",
concatStringsSep<StringSet>(", ", m.systemTypes),
m.maxJobs,
concatStringsSep<StringSet>(", ", m.supportedFeatures),
concatStringsSep<StringSet>(", ", m.mandatoryFeatures)
)
.str();
}
auto error = HintFmt(
"Failed to find a machine for remote build!\n"
"derivation: %s\n"
"required (system, features): (%s, [%s])\n"
"%s available machines:\n"
"(systems, maxjobs, supportedFeatures, mandatoryFeatures)%s",
drvstr,
neededSystem,
concatStringsSep<StringSet>(", ", requiredFeatures),
machines.size(),
Uncolored(machinesFormatted)
);
printMsg(level, error.str());
}
static int main_build_remote(AsyncIoRoot & aio, std::string programName, Strings argv)
{
{
@@ -198,39 +235,13 @@ static int main_build_remote(AsyncIoRoot & aio, std::string programName, Strings
std::cerr << "# postpone\n";
else
{
// add the template values.
std::string drvstr;
if (drvPath.has_value())
drvstr = drvPath->to_string();
else
drvstr = "<unknown>";
std::string machinesFormatted;
for (auto & m : machines) {
machinesFormatted += HintFmt(
"\n([%s], %s, [%s], [%s])",
concatStringsSep<StringSet>(", ", m.systemTypes),
m.maxJobs,
concatStringsSep<StringSet>(", ", m.supportedFeatures),
concatStringsSep<StringSet>(", ", m.mandatoryFeatures)
).str();
}
auto error = HintFmt(
"Failed to find a machine for remote build!\n"
"derivation: %s\n"
"required (system, features): (%s, [%s])\n"
"%s available machines:\n"
"(systems, maxjobs, supportedFeatures, mandatoryFeatures)%s",
drvstr,
printSelectionFailureMessage(
couldBuildLocally ? lvlChatty : lvlWarn,
drvPath ? drvPath->to_string() : "<unknown>",
machines,
neededSystem,
concatStringsSep<StringSet>(", ", requiredFeatures),
machines.size(),
Uncolored(machinesFormatted)
);
printMsg(couldBuildLocally ? lvlChatty : lvlWarn, error.str());
requiredFeatures
);
std::cerr << "# decline\n";
}