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Merge pull request #4467 from edolstra/error-formatting

Browse source 
Improve error formatting
This commit is contained in:
Eelco Dolstra 2021-01-25 12:50:57 +01:00 • committed by GitHub
commit 488a826842
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GPG key ID: 4AEE18F83AFDEB23
35 changed files with 265 additions and 454 deletions
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41
src/libstore/build/derivation-goal.cc
View file

@ -87,8 +87,8 @@ void handleDiffHook(
printError(chomp(diffRes.second));
} catch (Error & error) {
ErrorInfo ei = error.info();
ei.hint = hintfmt("diff hook execution failed: %s",
(error.info().hint.has_value() ? error.info().hint->str() : ""));
// FIXME: wrap errors.
ei.msg = hintfmt("diff hook execution failed: %s", ei.msg.str());
logError(ei);
}
}
@ -439,12 +439,9 @@ void DerivationGoal::repairClosure()
/* Check each path (slow!). */
for (auto & i : outputClosure) {
if (worker.pathContentsGood(i)) continue;
logError({
.name = "Corrupt path in closure",
.hint = hintfmt(
"found corrupted or missing path '%s' in the output closure of '%s'",
worker.store.printStorePath(i), worker.store.printStorePath(drvPath))
});
printError(
"found corrupted or missing path '%s' in the output closure of '%s'",
worker.store.printStorePath(i), worker.store.printStorePath(drvPath));
auto drvPath2 = outputsToDrv.find(i);
if (drvPath2 == outputsToDrv.end())
addWaitee(upcast_goal(worker.makeSubstitutionGoal(i, Repair)));
@ -893,9 +890,12 @@ void DerivationGoal::buildDone()
statusToString(status));
if (!logger->isVerbose() && !logTail.empty()) {
msg += (format("; last %d log lines:") % logTail.size()).str();
for (auto & line : logTail)
msg += "\n " + line;
msg += fmt(";\nlast %d log lines:\n", logTail.size());
for (auto & line : logTail) {
msg += "> ";
msg += line;
msg += "\n";
}
}
if (diskFull)
@ -1071,12 +1071,9 @@ HookReply DerivationGoal::tryBuildHook()
} catch (SysError & e) {
if (e.errNo == EPIPE) {
logError({
.name = "Build hook died",
.hint = hintfmt(
"build hook died unexpectedly: %s",
chomp(drainFD(worker.hook->fromHook.readSide.get())))
});
printError(
"build hook died unexpectedly: %s",
chomp(drainFD(worker.hook->fromHook.readSide.get())));
worker.hook = 0;
return rpDecline;
} else
@ -3088,10 +3085,7 @@ void DerivationGoal::registerOutputs()
auto rewriteOutput = [&]() {
/* Apply hash rewriting if necessary. */
if (!outputRewrites.empty()) {
logWarning({
.name = "Rewriting hashes",
.hint = hintfmt("rewriting hashes in '%1%'; cross fingers", actualPath),
});
warn("rewriting hashes in '%1%'; cross fingers", actualPath);
/* FIXME: this is in-memory. */
StringSink sink;
@ -3385,10 +3379,7 @@ void DerivationGoal::registerOutputs()
if (settings.enforceDeterminism)
throw NotDeterministic(hint);
logError({
.name = "Output determinism error",
.hint = hint
});
printError(hint);
curRound = nrRounds; // we know enough, bail out early
}

7
src/libstore/build/substitution-goal.cc
View file

@ -144,11 +144,8 @@ void SubstitutionGoal::tryNext()
only after we've downloaded the path. */
if (!sub->isTrusted && worker.store.pathInfoIsTrusted(*info))
{
logWarning({
.name = "Invalid path signature",
.hint = hintfmt("substituter '%s' does not have a valid signature for path '%s'",
sub->getUri(), worker.store.printStorePath(storePath))
});
warn("substituter '%s' does not have a valid signature for path '%s'",
sub->getUri(), worker.store.printStorePath(storePath));
tryNext();
return;
}

5
src/libstore/build/worker.cc
View file

@ -456,10 +456,7 @@ bool Worker::pathContentsGood(const StorePath & path)
}
pathContentsGoodCache.insert_or_assign(path, res);
if (!res)
logError({
.name = "Corrupted path",
.hint = hintfmt("path '%s' is corrupted or missing!", store.printStorePath(path))
});
printError("path '%s' is corrupted or missing!", store.printStorePath(path));
return res;
}

10
src/libstore/builtins/buildenv.cc
View file

@ -22,10 +22,7 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
srcFiles = readDirectory(srcDir);
} catch (SysError & e) {
if (e.errNo == ENOTDIR) {
logWarning({
.name = "Create links - directory",
.hint = hintfmt("not including '%s' in the user environment because it's not a directory", srcDir)
});
warn("not including '%s' in the user environment because it's not a directory", srcDir);
return;
}
throw;
@ -44,10 +41,7 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
throw SysError("getting status of '%1%'", srcFile);
} catch (SysError & e) {
if (e.errNo == ENOENT || e.errNo == ENOTDIR) {
logWarning({
.name = "Create links - skipping symlink",
.hint = hintfmt("skipping dangling symlink '%s'", dstFile)
});
warn("skipping dangling symlink '%s'", dstFile);
continue;
}
throw;

15
src/libstore/filetransfer.cc
View file

@ -639,11 +639,7 @@ struct curlFileTransfer : public FileTransfer
workerThreadMain();
} catch (nix::Interrupted & e) {
} catch (std::exception & e) {
logError({
.name = "File transfer",
.hint = hintfmt("unexpected error in download thread: %s",
e.what())
});
printError("unexpected error in download thread: %s", e.what());
}
{
@ -859,11 +855,10 @@ FileTransferError::FileTransferError(FileTransfer::Error error, std::shared_ptr<
// FIXME: Due to https://github.com/NixOS/nix/issues/3841 we don't know how
// to print different messages for different verbosity levels. For now
// we add some heuristics for detecting when we want to show the response.
if (response && (response->size() < 1024 || response->find("<html>") != string::npos)) {
err.hint = hintfmt("%1%\n\nresponse body:\n\n%2%", normaltxt(hf.str()), *response);
} else {
err.hint = hf;
}
if (response && (response->size() < 1024 || response->find("<html>") != string::npos))
err.msg = hintfmt("%1%\n\nresponse body:\n\n%2%", normaltxt(hf.str()), *response);
else
err.msg = hf;
}
bool isUri(const string & s)

32
src/libstore/local-store.cc
View file

@ -150,12 +150,7 @@ LocalStore::LocalStore(const Params & params)
struct group * gr = getgrnam(settings.buildUsersGroup.get().c_str());
if (!gr)
logError({
.name = "'build-users-group' not found",
.hint = hintfmt(
"warning: the group '%1%' specified in 'build-users-group' does not exist",
settings.buildUsersGroup)
});
printError("warning: the group '%1%' specified in 'build-users-group' does not exist", settings.buildUsersGroup);
else {
struct stat st;
if (stat(realStoreDir.c_str(), &st))
@ -1406,12 +1401,8 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
Path linkPath = linksDir + "/" + link.name;
string hash = hashPath(htSHA256, linkPath).first.to_string(Base32, false);
if (hash != link.name) {
logError({
.name = "Invalid hash",
.hint = hintfmt(
"link '%s' was modified! expected hash '%s', got '%s'",
linkPath, link.name, hash)
});
printError("link '%s' was modified! expected hash '%s', got '%s'",
linkPath, link.name, hash);
if (repair) {
if (unlink(linkPath.c_str()) == 0)
printInfo("removed link '%s'", linkPath);
@ -1444,11 +1435,8 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
auto current = hashSink->finish();
if (info->narHash != nullHash && info->narHash != current.first) {
logError({
.name = "Invalid hash - path modified",
.hint = hintfmt("path '%s' was modified! expected hash '%s', got '%s'",
printStorePath(i), info->narHash.to_string(Base32, true), current.first.to_string(Base32, true))
});
printError("path '%s' was modified! expected hash '%s', got '%s'",
printStorePath(i), info->narHash.to_string(Base32, true), current.first.to_string(Base32, true));
if (repair) repairPath(i); else errors = true;
} else {
@ -1499,10 +1487,7 @@ void LocalStore::verifyPath(const Path & pathS, const StringSet & store,
if (!done.insert(pathS).second) return;
if (!isStorePath(pathS)) {
logError({
.name = "Nix path not found",
.hint = hintfmt("path '%s' is not in the Nix store", pathS)
});
printError("path '%s' is not in the Nix store", pathS);
return;
}
@ -1525,10 +1510,7 @@ void LocalStore::verifyPath(const Path & pathS, const StringSet & store,
auto state(_state.lock());
invalidatePath(*state, path);
} else {
logError({
.name = "Missing path with referrers",
.hint = hintfmt("path '%s' disappeared, but it still has valid referrers!", pathS)
});
printError("path '%s' disappeared, but it still has valid referrers!", pathS);
if (repair)
try {
repairPath(path);

17
src/libstore/optimise-store.cc
View file

@ -126,16 +126,13 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
NixOS (example: $fontconfig/var/cache being modified). Skip
those files. FIXME: check the modification time. */
if (S_ISREG(st.st_mode) && (st.st_mode & S_IWUSR)) {
logWarning({
.name = "Suspicious file",
.hint = hintfmt("skipping suspicious writable file '%1%'", path)
});
warn("skipping suspicious writable file '%1%'", path);
return;
}
/* This can still happen on top-level files. */
if (st.st_nlink > 1 && inodeHash.count(st.st_ino)) {
debug(format("'%1%' is already linked, with %2% other file(s)") % path % (st.st_nlink - 2));
debug("'%s' is already linked, with %d other file(s)", path, st.st_nlink - 2);
return;
}
@ -191,10 +188,7 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
}
if (st.st_size != stLink.st_size) {
logWarning({
.name = "Corrupted link",
.hint = hintfmt("removing corrupted link '%1%'", linkPath)
});
warn("removing corrupted link '%s'", linkPath);
unlink(linkPath.c_str());
goto retry;
}
@ -229,10 +223,7 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
/* Atomically replace the old file with the new hard link. */
if (rename(tempLink.c_str(), path.c_str()) == -1) {
if (unlink(tempLink.c_str()) == -1)
logError({
.name = "Unlink error",
.hint = hintfmt("unable to unlink '%1%'", tempLink)
});
printError("unable to unlink '%1%'", tempLink);
if (errno == EMLINK) {
/* Some filesystems generate too many links on the rename,
rather than on the original link. (Probably it

2
src/libstore/sqlite.cc
View file

@ -211,7 +211,7 @@ void handleSQLiteBusy(const SQLiteBusy & e)
lastWarned = now;
logWarning({
.name = "Sqlite busy",
.hint = hintfmt(e.what())
.msg = hintfmt(e.what())
});
}