Revert "libutil: drop Fs{Source,Sink}::good"

This reverts commit 1340807e30dba4b3972c31f02861bbaeaeb60e61.

Change-Id: I34d2a80eb3c3e9d79cb02b92cd1189da32d18cb6
This commit is contained in:
eldritch horrors 2024-04-05 03:51:45 +02:00
parent 6c777476c9
commit 821ad98beb
3 changed files with 34 additions and 8 deletions

View file

@ -39,7 +39,9 @@ RemoteStore::RemoteStore(const Params & params)
},
[this](const ref<Connection> & r) {
return
std::chrono::duration_cast<std::chrono::seconds>(
r->to.good()
&& r->from.good()
&& std::chrono::duration_cast<std::chrono::seconds>(
std::chrono::steady_clock::now() - r->startTime).count() < maxConnectionAge;
}
))
@ -178,10 +180,6 @@ void RemoteStore::ConnectionHandle::processStderr(Sink * sink, Source * source,
m.find("Derive([") != std::string::npos)
throw Error("%s, this might be because the daemon is too old to understand dependencies on dynamic derivations. Check to see if the raw derivation is in the form '%s'", std::move(m), "DrvWithVersion(..)");
}
// the daemon can still handle more requests, so the connection itself
// is still valid. the current *handle* however should be considered a
// lost cause and abandoned entirely.
handle.release();
throw;
}
}

View file

@ -52,7 +52,18 @@ FdSink::~FdSink()
void FdSink::writeUnbuffered(std::string_view data)
{
written += data.size();
try {
writeFull(fd, data);
} catch (SysError & e) {
_good = false;
throw;
}
}
bool FdSink::good()
{
return _good;
}
@ -117,13 +128,19 @@ size_t FdSource::readUnbuffered(char * data, size_t len)
checkInterrupt();
n = ::read(fd, data, len);
} while (n == -1 && errno == EINTR);
if (n == -1) { throw SysError("reading from file"); }
if (n == 0) { throw EndOfFile(std::string(*endOfFileError)); }
if (n == -1) { _good = false; throw SysError("reading from file"); }
if (n == 0) { _good = false; throw EndOfFile(std::string(*endOfFileError)); }
read += n;
return n;
}
bool FdSource::good()
{
return _good;
}
size_t StringSource::read(char * data, size_t len)
{
if (pos == s.size()) throw EndOfFile("end of string reached");

View file

@ -18,6 +18,7 @@ struct Sink
{
virtual ~Sink() { }
virtual void operator () (std::string_view data) = 0;
virtual bool good() { return true; }
};
/**
@ -79,6 +80,8 @@ struct Source
*/
virtual size_t read(char * data, size_t len) = 0;
virtual bool good() { return true; }
void drainInto(Sink & sink);
std::string drain();
@ -133,6 +136,11 @@ struct FdSink : BufferedSink
~FdSink();
void writeUnbuffered(std::string_view data) override;
bool good() override;
private:
bool _good = true;
};
@ -157,8 +165,11 @@ struct FdSource : BufferedSource
return *this;
}
bool good() override;
protected:
size_t readUnbuffered(char * data, size_t len) override;
private:
bool _good = true;
};