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Merge remote-tracking branch 'origin/master' into flakes

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Eelco Dolstra 2019-09-04 13:30:11 +02:00
commit e302ba0e65
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21 changed files with 99 additions and 72 deletions
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2
doc/manual/release-notes/rl-2.3.xml
View file

@ -4,7 +4,7 @@
version="5.0"
xml:id="ssec-relnotes-2.3">
<title>Release 2.3 (2019-08-??)</title>
<title>Release 2.3 (2019-09-04)</title>
<para>This is primarily a bug fix release. However, it makes some
incompatible changes:</para>

8
misc/launchd/org.nixos.nix-daemon.plist.in
View file

@ -13,8 +13,12 @@
<true/>
<key>RunAtLoad</key>
<true/>
<key>Program</key>
<string>@bindir@/nix-daemon</string>
<key>ProgramArguments</key>
<array>
<string>/bin/sh</string>
<string>-c</string>
<string>/bin/wait4path @bindir@/nix-daemon &amp;&amp; @bindir@/nix-daemon</string>
</array>
<key>StandardErrorPath</key>
<string>/var/log/nix-daemon.log</string>
<key>StandardOutPath</key>

12
src/libstore/binary-cache-store.cc
View file

@ -55,7 +55,7 @@ void BinaryCacheStore::init()
}
void BinaryCacheStore::getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback)
Callback<std::shared_ptr<std::string>> callback) noexcept
{
try {
callback(getFile(path));
@ -240,7 +240,7 @@ void BinaryCacheStore::narFromPath(const Path & storePath, Sink & sink)
}
void BinaryCacheStore::queryPathInfoUncached(const Path & storePath,
Callback<std::shared_ptr<ValidPathInfo>> callback)
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept
{
auto uri = getUri();
auto act = std::make_shared<Activity>(*logger, lvlTalkative, actQueryPathInfo,
@ -249,21 +249,23 @@ void BinaryCacheStore::queryPathInfoUncached(const Path & storePath,
auto narInfoFile = narInfoFileFor(storePath);
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
getFile(narInfoFile,
{[=](std::future<std::shared_ptr<std::string>> fut) {
try {
auto data = fut.get();
if (!data) return callback(nullptr);
if (!data) return (*callbackPtr)(nullptr);
stats.narInfoRead++;
callback((std::shared_ptr<ValidPathInfo>)
(*callbackPtr)((std::shared_ptr<ValidPathInfo>)
std::make_shared<NarInfo>(*this, *data, narInfoFile));
(void) act; // force Activity into this lambda to ensure it stays alive
} catch (...) {
callback.rethrow();
callbackPtr->rethrow();
}
}});
}

4
src/libstore/binary-cache-store.hh
View file

@ -47,7 +47,7 @@ public:
/* Fetch the specified file and call the specified callback with
the result. A subclass may implement this asynchronously. */
virtual void getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback);
Callback<std::shared_ptr<std::string>> callback) noexcept;
std::shared_ptr<std::string> getFile(const std::string & path);
@ -73,7 +73,7 @@ public:
bool isValidPathUncached(const Path & path) override;
void queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback) override;
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept override;
Path queryPathFromHashPart(const string & hashPart) override
{ unsupported("queryPathFromHashPart"); }

2
src/libstore/build.cc
View file

@ -1197,7 +1197,7 @@ void DerivationGoal::haveDerivation()
/* We are first going to try to create the invalid output paths
through substitutes. If that doesn't work, we'll build
them. */
if (settings.useSubstitutes && drv->substitutesAllowed())
if (settings.useSubstitutes && parsedDrv->substitutesAllowed())
for (auto & i : invalidOutputs)
addWaitee(worker.makeSubstitutionGoal(i, buildMode == bmRepair ? Repair : NoRepair));

6
src/libstore/derivations.cc
View file

@ -36,12 +36,6 @@ Path BasicDerivation::findOutput(const string & id) const
}
bool BasicDerivation::substitutesAllowed() const
{
return get(env, "allowSubstitutes", "1") == "1";
}
bool BasicDerivation::isBuiltin() const
{
return string(builder, 0, 8) == "builtin:";

2
src/libstore/derivations.hh
View file

@ -56,8 +56,6 @@ struct BasicDerivation
the given derivation. */
Path findOutput(const string & id) const;
bool substitutesAllowed() const;
bool isBuiltin() const;
/* Return true iff this is a fixed-output derivation. */

16
src/libstore/download.cc
View file

@ -77,13 +77,13 @@ struct CurlDownloader : public Downloader
DownloadItem(CurlDownloader & downloader,
const DownloadRequest & request,
Callback<DownloadResult> callback)
Callback<DownloadResult> && callback)
: downloader(downloader)
, request(request)
, act(*logger, lvlTalkative, actDownload,
fmt(request.data ? "uploading '%s'" : "downloading '%s'", request.uri),
{request.uri}, request.parentAct)
, callback(callback)
, callback(std::move(callback))
, finalSink([this](const unsigned char * data, size_t len) {
if (this->request.dataCallback) {
writtenToSink += len;
@ -342,15 +342,9 @@ struct CurlDownloader : public Downloader
(httpStatus == 200 || httpStatus == 201 || httpStatus == 204 || httpStatus == 206 || httpStatus == 304 || httpStatus == 226 /* FTP */ || httpStatus == 0 /* other protocol */))
{
result.cached = httpStatus == 304;
act.progress(result.bodySize, result.bodySize);
done = true;
try {
act.progress(result.bodySize, result.bodySize);
callback(std::move(result));
} catch (...) {
done = true;
callback.rethrow();
}
callback(std::move(result));
}
else {
@ -671,7 +665,7 @@ struct CurlDownloader : public Downloader
return;
}
enqueueItem(std::make_shared<DownloadItem>(*this, request, callback));
enqueueItem(std::make_shared<DownloadItem>(*this, request, std::move(callback)));
}
};

14
src/libstore/http-binary-cache-store.cc
View file

@ -131,23 +131,25 @@ protected:
}
void getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback) override
Callback<std::shared_ptr<std::string>> callback) noexcept override
{
checkEnabled();
auto request(makeRequest(path));
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
getDownloader()->enqueueDownload(request,
{[callback, this](std::future<DownloadResult> result) {
{[callbackPtr, this](std::future<DownloadResult> result) {
try {
callback(result.get().data);
(*callbackPtr)(result.get().data);
} catch (DownloadError & e) {
if (e.error == Downloader::NotFound || e.error == Downloader::Forbidden)
return callback(std::shared_ptr<std::string>());
return (*callbackPtr)(std::shared_ptr<std::string>());
maybeDisable();
callback.rethrow();
callbackPtr->rethrow();
} catch (...) {
callback.rethrow();
callbackPtr->rethrow();
}
}});
}

2
src/libstore/legacy-ssh-store.cc
View file

@ -88,7 +88,7 @@ struct LegacySSHStore : public Store
}
void queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback) override
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept override
{
try {
auto conn(connections->get());

2
src/libstore/local-store.cc
View file

@ -622,7 +622,7 @@ uint64_t LocalStore::addValidPath(State & state,
void LocalStore::queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback)
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept
{
try {
auto info = std::make_shared<ValidPathInfo>();

2
src/libstore/local-store.hh
View file

@ -127,7 +127,7 @@ public:
PathSet queryAllValidPaths() override;
void queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback) override;
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept override;
void queryReferrers(const Path & path, PathSet & referrers) override;

4
src/libstore/misc.cc
View file

@ -1,4 +1,5 @@
#include "derivations.hh"
#include "parsed-derivations.hh"
#include "globals.hh"
#include "local-store.hh"
#include "store-api.hh"
@ -189,6 +190,7 @@ void Store::queryMissing(const PathSet & targets,
}
Derivation drv = derivationFromPath(i2.first);
ParsedDerivation parsedDrv(i2.first, drv);
PathSet invalid;
for (auto & j : drv.outputs)
@ -197,7 +199,7 @@ void Store::queryMissing(const PathSet & targets,
invalid.insert(j.second.path);
if (invalid.empty()) return;
if (settings.useSubstitutes && drv.substitutesAllowed()) {
if (settings.useSubstitutes && parsedDrv.substitutesAllowed()) {
auto drvState = make_ref<Sync<DrvState>>(DrvState(invalid.size()));
for (auto & output : invalid)
pool.enqueue(std::bind(checkOutput, i2.first, make_ref<Derivation>(drv), output, drvState));

5
src/libstore/parsed-derivations.cc
View file

@ -108,4 +108,9 @@ bool ParsedDerivation::willBuildLocally() const
return getBoolAttr("preferLocalBuild") && canBuildLocally();
}
bool ParsedDerivation::substitutesAllowed() const
{
return getBoolAttr("allowSubstitutes", true);
}
}

2
src/libstore/parsed-derivations.hh
View file

@ -30,6 +30,8 @@ public:
bool canBuildLocally() const;
bool willBuildLocally() const;
bool substitutesAllowed() const;
};
}

2
src/libstore/remote-store.cc
View file

@ -349,7 +349,7 @@ void RemoteStore::querySubstitutablePathInfos(const PathSet & paths,
void RemoteStore::queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback)
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept
{
try {
std::shared_ptr<ValidPathInfo> info;

2
src/libstore/remote-store.hh
View file

@ -41,7 +41,7 @@ public:
PathSet queryAllValidPaths() override;
void queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback) override;
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept override;
void queryReferrers(const Path & path, PathSet & referrers) override;

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

@ -329,13 +329,14 @@ ref<const ValidPathInfo> Store::queryPathInfo(const Path & storePath)
void Store::queryPathInfo(const Path & storePath,
Callback<ref<ValidPathInfo>> callback)
Callback<ref<ValidPathInfo>> callback) noexcept
{
assertStorePath(storePath);
auto hashPart = storePathToHash(storePath);
std::string hashPart;
try {
assertStorePath(storePath);
hashPart = storePathToHash(storePath);
{
auto res = state.lock()->pathInfoCache.get(hashPart);
@ -365,8 +366,10 @@ void Store::queryPathInfo(const Path & storePath,
} catch (...) { return callback.rethrow(); }
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
queryPathInfoUncached(storePath,
{[this, storePath, hashPart, callback](std::future<std::shared_ptr<ValidPathInfo>> fut) {
{[this, storePath, hashPart, callbackPtr](std::future<std::shared_ptr<ValidPathInfo>> fut) {
try {
auto info = fut.get();
@ -386,8 +389,8 @@ void Store::queryPathInfo(const Path & storePath,
throw InvalidPath("path '%s' is not valid", storePath);
}
callback(ref<ValidPathInfo>(info));
} catch (...) { callback.rethrow(); }
(*callbackPtr)(ref<ValidPathInfo>(info));
} catch (...) { callbackPtr->rethrow(); }
}});
}

4
src/libstore/store-api.hh
View file

@ -361,12 +361,12 @@ public:
/* Asynchronous version of queryPathInfo(). */
void queryPathInfo(const Path & path,
Callback<ref<ValidPathInfo>> callback);
Callback<ref<ValidPathInfo>> callback) noexcept;
protected:
virtual void queryPathInfoUncached(const Path & path,
Callback<std::shared_ptr<ValidPathInfo>> callback) = 0;
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept = 0;
public:

19
src/libutil/util.hh
View file

@ -469,21 +469,34 @@ string get(const T & map, const string & key, const string & def = "")
type T or an exception. (We abuse std::future<T> to pass the value or
exception.) */
template<typename T>
struct Callback
class Callback
{
std::function<void(std::future<T>)> fun;
std::atomic_flag done = ATOMIC_FLAG_INIT;
public:
Callback(std::function<void(std::future<T>)> fun) : fun(fun) { }
void operator()(T && t) const
Callback(Callback && callback) : fun(std::move(callback.fun))
{
auto prev = callback.done.test_and_set();
if (prev) done.test_and_set();
}
void operator()(T && t) noexcept
{
auto prev = done.test_and_set();
assert(!prev);
std::promise<T> promise;
promise.set_value(std::move(t));
fun(promise.get_future());
}
void rethrow(const std::exception_ptr & exc = std::current_exception()) const
void rethrow(const std::exception_ptr & exc = std::current_exception()) noexcept
{
auto prev = done.test_and_set();
assert(!prev);
std::promise<T> promise;
promise.set_exception(exc);
fun(promise.get_future());

44
tests/gc-auto.sh
View file

@ -17,42 +17,50 @@ expr=$(cat <<EOF
with import ./config.nix; mkDerivation {
name = "gc-A";
buildCommand = ''
set -x
[[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 3 ]]
mkdir \$out
echo foo > \$out/bar
echo 1...
sleep 2
echo 200 > $fake_free
echo 200 > ${fake_free}.tmp1
mv ${fake_free}.tmp1 $fake_free
echo 2...
sleep 2
echo 3...
sleep 2
echo 4...
[[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 1 ]]
'';
}
EOF
)
expr2=$(cat <<EOF
with import ./config.nix; mkDerivation {
name = "gc-B";
buildCommand = ''
set -x
mkdir \$out
echo foo > \$out/bar
echo 1...
sleep 2
echo 200 > ${fake_free}.tmp2
mv ${fake_free}.tmp2 $fake_free
echo 2...
sleep 2
echo 3...
sleep 2
echo 4...
'';
}
EOF
)
nix build --impure -v -o $TEST_ROOT/result-A -L "($expr)" \
--min-free 1000 --max-free 2000 --min-free-check-interval 1 &
pid=$!
expr2=$(cat <<EOF
with import ./config.nix; mkDerivation {
name = "gc-B";
buildCommand = ''
mkdir \$out
echo foo > \$out/bar
echo 1...
sleep 2
echo 200 > $fake_free
echo 2...
sleep 2
echo 3...
'';
}
EOF
)
nix build --impure -v -o $TEST_ROOT/result-B -L "($expr2)" \
--min-free 1000 --max-free 2000 --min-free-check-interval 1