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Merge branch 'misc-ca' of github.com:obsidiansystems/nix into derivation-primop-floating-output

This commit is contained in:
John Ericson 2020-07-23 15:06:56 +00:00
commit c36916eca0
16 changed files with 223 additions and 166 deletions

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@ -12,7 +12,7 @@ for more details.
On Linux and macOS the easiest way to Install Nix is to run the following shell command On Linux and macOS the easiest way to Install Nix is to run the following shell command
(as a user other than root): (as a user other than root):
``` ```console
$ curl -L https://nixos.org/nix/install | sh $ curl -L https://nixos.org/nix/install | sh
``` ```
@ -20,27 +20,8 @@ Information on additional installation methods is available on the [Nix download
## Building And Developing ## Building And Developing
### Building Nix See our [Hacking guide](https://hydra.nixos.org/job/nix/master/build.x86_64-linux/latest/download-by-type/doc/manual#chap-hacking) in our manual for instruction on how to
build nix from source with nix-build or how to get a development environment.
You can build Nix using one of the targets provided by [release.nix](./release.nix):
```
$ nix-build ./release.nix -A build.aarch64-linux
$ nix-build ./release.nix -A build.x86_64-darwin
$ nix-build ./release.nix -A build.i686-linux
$ nix-build ./release.nix -A build.x86_64-linux
```
### Development Environment
You can use the provided `shell.nix` to get a working development environment:
```
$ nix-shell
$ ./bootstrap.sh
$ ./configure
$ make
```
## Additional Resources ## Additional Resources

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@ -7,15 +7,34 @@
<para>This section provides some notes on how to hack on Nix. To get <para>This section provides some notes on how to hack on Nix. To get
the latest version of Nix from GitHub: the latest version of Nix from GitHub:
<screen> <screen>
$ git clone git://github.com/NixOS/nix.git $ git clone https://github.com/NixOS/nix.git
$ cd nix $ cd nix
</screen> </screen>
</para> </para>
<para>To build it and its dependencies: <para>To build Nix for the current operating system/architecture use
<screen> <screen>
$ nix-build release.nix -A build.x86_64-linux $ nix-build
</screen> </screen>
or if you have a flakes-enabled nix:
<screen>
$ nix build
</screen>
This will build <literal>defaultPackage</literal> attribute defined in the <literal>flake.nix</literal> file.
To build for other platforms add one of the following suffixes to it: aarch64-linux,
i686-linux, x86_64-darwin, x86_64-linux.
i.e.
<screen>
nix-build -A defaultPackage.x86_64-linux
</screen>
</para> </para>
<para>To build all dependencies and start a shell in which all <para>To build all dependencies and start a shell in which all
@ -27,13 +46,27 @@ $ nix-shell
To build Nix itself in this shell: To build Nix itself in this shell:
<screen> <screen>
[nix-shell]$ ./bootstrap.sh [nix-shell]$ ./bootstrap.sh
[nix-shell]$ configurePhase [nix-shell]$ ./configure $configureFlags
[nix-shell]$ make [nix-shell]$ make -j $NIX_BUILD_CORES
</screen> </screen>
To install it in <literal>$(pwd)/inst</literal> and test it: To install it in <literal>$(pwd)/inst</literal> and test it:
<screen> <screen>
[nix-shell]$ make install [nix-shell]$ make install
[nix-shell]$ make installcheck [nix-shell]$ make installcheck
[nix-shell]$ ./inst/bin/nix --version
nix (Nix) 2.4
</screen>
If you have a flakes-enabled nix you can replace:
<screen>
$ nix-shell
</screen>
by:
<screen>
$ nix develop
</screen> </screen>
</para> </para>

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@ -2774,7 +2774,7 @@ struct RestrictedStore : public LocalFSStore
goal.addDependency(info.path); goal.addDependency(info.path);
} }
StorePath addToStoreFromDump(const string & dump, const string & name, StorePath addToStoreFromDump(Source & dump, const string & name,
FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override
{ {
auto path = next->addToStoreFromDump(dump, name, method, hashAlgo, repair); auto path = next->addToStoreFromDump(dump, name, method, hashAlgo, repair);

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@ -350,21 +350,24 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
} }
case wopAddToStore: { case wopAddToStore: {
std::string s, baseName; HashType hashAlgo;
std::string baseName;
FileIngestionMethod method; FileIngestionMethod method;
{ {
bool fixed; uint8_t recursive; bool fixed;
from >> baseName >> fixed /* obsolete */ >> recursive >> s; uint8_t recursive;
std::string hashAlgoRaw;
from >> baseName >> fixed /* obsolete */ >> recursive >> hashAlgoRaw;
if (recursive > (uint8_t) FileIngestionMethod::Recursive) if (recursive > (uint8_t) FileIngestionMethod::Recursive)
throw Error("unsupported FileIngestionMethod with value of %i; you may need to upgrade nix-daemon", recursive); throw Error("unsupported FileIngestionMethod with value of %i; you may need to upgrade nix-daemon", recursive);
method = FileIngestionMethod { recursive }; method = FileIngestionMethod { recursive };
/* Compatibility hack. */ /* Compatibility hack. */
if (!fixed) { if (!fixed) {
s = "sha256"; hashAlgoRaw = "sha256";
method = FileIngestionMethod::Recursive; method = FileIngestionMethod::Recursive;
} }
hashAlgo = parseHashType(hashAlgoRaw);
} }
HashType hashAlgo = parseHashType(s);
StringSink saved; StringSink saved;
TeeSource savedNARSource(from, saved); TeeSource savedNARSource(from, saved);
@ -382,7 +385,9 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
logger->startWork(); logger->startWork();
if (!savedRegular.regular) throw Error("regular file expected"); if (!savedRegular.regular) throw Error("regular file expected");
auto path = store->addToStoreFromDump(*saved.s, baseName, method, hashAlgo); // FIXME: try to stream directly from `from`.
StringSource dumpSource { *saved.s };
auto path = store->addToStoreFromDump(dumpSource, baseName, method, hashAlgo);
logger->stopWork(); logger->stopWork();
to << store->printStorePath(path); to << store->printStorePath(path);

View file

@ -124,7 +124,7 @@ struct curlFileTransfer : public FileTransfer
if (requestHeaders) curl_slist_free_all(requestHeaders); if (requestHeaders) curl_slist_free_all(requestHeaders);
try { try {
if (!done) if (!done)
fail(FileTransferError(Interrupted, "download of '%s' was interrupted", request.uri)); fail(FileTransferError(Interrupted, nullptr, "download of '%s' was interrupted", request.uri));
} catch (...) { } catch (...) {
ignoreException(); ignoreException();
} }
@ -145,6 +145,7 @@ struct curlFileTransfer : public FileTransfer
LambdaSink finalSink; LambdaSink finalSink;
std::shared_ptr<CompressionSink> decompressionSink; std::shared_ptr<CompressionSink> decompressionSink;
std::optional<StringSink> errorSink;
std::exception_ptr writeException; std::exception_ptr writeException;
@ -154,9 +155,19 @@ struct curlFileTransfer : public FileTransfer
size_t realSize = size * nmemb; size_t realSize = size * nmemb;
result.bodySize += realSize; result.bodySize += realSize;
if (!decompressionSink) if (!decompressionSink) {
decompressionSink = makeDecompressionSink(encoding, finalSink); decompressionSink = makeDecompressionSink(encoding, finalSink);
if (! successfulStatuses.count(getHTTPStatus())) {
// In this case we want to construct a TeeSink, to keep
// the response around (which we figure won't be big
// like an actual download should be) to improve error
// messages.
errorSink = StringSink { };
}
}
if (errorSink)
(*errorSink)((unsigned char *) contents, realSize);
(*decompressionSink)((unsigned char *) contents, realSize); (*decompressionSink)((unsigned char *) contents, realSize);
return realSize; return realSize;
@ -412,16 +423,21 @@ struct curlFileTransfer : public FileTransfer
attempt++; attempt++;
std::shared_ptr<std::string> response;
if (errorSink)
response = errorSink->s;
auto exc = auto exc =
code == CURLE_ABORTED_BY_CALLBACK && _isInterrupted code == CURLE_ABORTED_BY_CALLBACK && _isInterrupted
? FileTransferError(Interrupted, fmt("%s of '%s' was interrupted", request.verb(), request.uri)) ? FileTransferError(Interrupted, response, "%s of '%s' was interrupted", request.verb(), request.uri)
: httpStatus != 0 : httpStatus != 0
? FileTransferError(err, ? FileTransferError(err,
response,
fmt("unable to %s '%s': HTTP error %d ('%s')", fmt("unable to %s '%s': HTTP error %d ('%s')",
request.verb(), request.uri, httpStatus, statusMsg) request.verb(), request.uri, httpStatus, statusMsg)
+ (code == CURLE_OK ? "" : fmt(" (curl error: %s)", curl_easy_strerror(code))) + (code == CURLE_OK ? "" : fmt(" (curl error: %s)", curl_easy_strerror(code)))
) )
: FileTransferError(err, : FileTransferError(err,
response,
fmt("unable to %s '%s': %s (%d)", fmt("unable to %s '%s': %s (%d)",
request.verb(), request.uri, curl_easy_strerror(code), code)); request.verb(), request.uri, curl_easy_strerror(code), code));
@ -679,7 +695,7 @@ struct curlFileTransfer : public FileTransfer
auto s3Res = s3Helper.getObject(bucketName, key); auto s3Res = s3Helper.getObject(bucketName, key);
FileTransferResult res; FileTransferResult res;
if (!s3Res.data) if (!s3Res.data)
throw FileTransferError(NotFound, fmt("S3 object '%s' does not exist", request.uri)); throw FileTransferError(NotFound, nullptr, "S3 object '%s' does not exist", request.uri);
res.data = s3Res.data; res.data = s3Res.data;
callback(std::move(res)); callback(std::move(res));
#else #else
@ -824,6 +840,21 @@ void FileTransfer::download(FileTransferRequest && request, Sink & sink)
} }
} }
template<typename... Args>
FileTransferError::FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args)
: Error(args...), error(error), response(response)
{
const auto hf = hintfmt(args...);
// 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;
}
}
bool isUri(const string & s) bool isUri(const string & s)
{ {
if (s.compare(0, 8, "channel:") == 0) return true; if (s.compare(0, 8, "channel:") == 0) return true;

View file

@ -103,10 +103,12 @@ class FileTransferError : public Error
{ {
public: public:
FileTransfer::Error error; FileTransfer::Error error;
std::shared_ptr<string> response; // intentionally optional
template<typename... Args> template<typename... Args>
FileTransferError(FileTransfer::Error error, const Args & ... args) FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args);
: Error(args...), error(error)
{ } virtual const char* sname() const override { return "FileTransferError"; }
}; };
bool isUri(const string & s); bool isUri(const string & s);

View file

@ -1041,82 +1041,26 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
} }
StorePath LocalStore::addToStoreFromDump(const string & dump, const string & name,
FileIngestionMethod method, HashType hashAlgo, RepairFlag repair)
{
Hash h = hashString(hashAlgo, dump);
auto dstPath = makeFixedOutputPath(method, h, name);
addTempRoot(dstPath);
if (repair || !isValidPath(dstPath)) {
/* The first check above is an optimisation to prevent
unnecessary lock acquisition. */
auto realPath = Store::toRealPath(dstPath);
PathLocks outputLock({realPath});
if (repair || !isValidPath(dstPath)) {
deletePath(realPath);
autoGC();
if (method == FileIngestionMethod::Recursive) {
StringSource source(dump);
restorePath(realPath, source);
} else
writeFile(realPath, dump);
canonicalisePathMetaData(realPath, -1);
/* Register the SHA-256 hash of the NAR serialisation of
the path in the database. We may just have computed it
above (if called with recursive == true and hashAlgo ==
sha256); otherwise, compute it here. */
HashResult hash;
if (method == FileIngestionMethod::Recursive) {
hash.first = hashAlgo == htSHA256 ? h : hashString(htSHA256, dump);
hash.second = dump.size();
} else
hash = hashPath(htSHA256, realPath);
optimisePath(realPath); // FIXME: combine with hashPath()
ValidPathInfo info(dstPath);
info.narHash = hash.first;
info.narSize = hash.second;
info.ca = FixedOutputHash { .method = method, .hash = h };
registerValidPath(info);
}
outputLock.setDeletion(true);
}
return dstPath;
}
StorePath LocalStore::addToStore(const string & name, const Path & _srcPath, StorePath LocalStore::addToStore(const string & name, const Path & _srcPath,
FileIngestionMethod method, HashType hashAlgo, PathFilter & filter, RepairFlag repair) FileIngestionMethod method, HashType hashAlgo, PathFilter & filter, RepairFlag repair)
{ {
Path srcPath(absPath(_srcPath)); Path srcPath(absPath(_srcPath));
auto source = sinkToSource([&](Sink & sink) {
if (method == FileIngestionMethod::Recursive)
dumpPath(srcPath, sink, filter);
else
readFile(srcPath, sink);
});
return addToStoreFromDump(*source, name, method, hashAlgo, repair);
}
if (method != FileIngestionMethod::Recursive)
return addToStoreFromDump(readFile(srcPath), name, method, hashAlgo, repair);
/* For computing the NAR hash. */ StorePath LocalStore::addToStoreFromDump(Source & source0, const string & name,
auto sha256Sink = std::make_unique<HashSink>(htSHA256); FileIngestionMethod method, HashType hashAlgo, RepairFlag repair)
{
/* For computing the store path. In recursive SHA-256 mode, this /* For computing the store path. */
is the same as the NAR hash, so no need to do it again. */ auto hashSink = std::make_unique<HashSink>(hashAlgo);
std::unique_ptr<HashSink> hashSink = TeeSource source { source0, *hashSink };
hashAlgo == htSHA256
? nullptr
: std::make_unique<HashSink>(hashAlgo);
/* Read the source path into memory, but only if it's up to /* Read the source path into memory, but only if it's up to
narBufferSize bytes. If it's larger, write it to a temporary narBufferSize bytes. If it's larger, write it to a temporary
@ -1124,55 +1068,49 @@ StorePath LocalStore::addToStore(const string & name, const Path & _srcPath,
destination store path is already valid, we just delete the destination store path is already valid, we just delete the
temporary path. Otherwise, we move it to the destination store temporary path. Otherwise, we move it to the destination store
path. */ path. */
bool inMemory = true; bool inMemory = false;
std::string nar;
auto source = sinkToSource([&](Sink & sink) { std::string dump;
LambdaSink sink2([&](const unsigned char * buf, size_t len) { /* Fill out buffer, and decide whether we are working strictly in
(*sha256Sink)(buf, len); memory based on whether we break out because the buffer is full
if (hashSink) (*hashSink)(buf, len); or the original source is empty */
while (dump.size() < settings.narBufferSize) {
if (inMemory) { auto oldSize = dump.size();
if (nar.size() + len > settings.narBufferSize) { constexpr size_t chunkSize = 65536;
inMemory = false; auto want = std::min(chunkSize, settings.narBufferSize - oldSize);
sink << 1; dump.resize(oldSize + want);
sink((const unsigned char *) nar.data(), nar.size()); auto got = 0;
nar.clear(); try {
} else { got = source.read((uint8_t *) dump.data() + oldSize, want);
nar.append((const char *) buf, len); } catch (EndOfFile &) {
inMemory = true;
break;
} }
dump.resize(oldSize + got);
} }
if (!inMemory) sink(buf, len);
});
dumpPath(srcPath, sink2, filter);
});
std::unique_ptr<AutoDelete> delTempDir; std::unique_ptr<AutoDelete> delTempDir;
Path tempPath; Path tempPath;
try { if (!inMemory) {
/* Wait for the source coroutine to give us some dummy /* Drain what we pulled so far, and then keep on pulling */
data. This is so that we don't create the temporary StringSource dumpSource { dump };
directory if the NAR fits in memory. */ ChainSource bothSource { dumpSource, source };
readInt(*source);
auto tempDir = createTempDir(realStoreDir, "add"); auto tempDir = createTempDir(realStoreDir, "add");
delTempDir = std::make_unique<AutoDelete>(tempDir); delTempDir = std::make_unique<AutoDelete>(tempDir);
tempPath = tempDir + "/x"; tempPath = tempDir + "/x";
restorePath(tempPath, *source); if (method == FileIngestionMethod::Recursive)
restorePath(tempPath, bothSource);
else
writeFile(tempPath, bothSource);
} catch (EndOfFile &) { dump.clear();
if (!inMemory) throw;
/* The NAR fits in memory, so we didn't do restorePath(). */
} }
auto sha256 = sha256Sink->finish(); auto [hash, size] = hashSink->finish();
Hash hash = hashSink ? hashSink->finish().first : sha256.first;
auto dstPath = makeFixedOutputPath(method, hash, name); auto dstPath = makeFixedOutputPath(method, hash, name);
@ -1194,22 +1132,34 @@ StorePath LocalStore::addToStore(const string & name, const Path & _srcPath,
autoGC(); autoGC();
if (inMemory) { if (inMemory) {
StringSource dumpSource { dump };
/* Restore from the NAR in memory. */ /* Restore from the NAR in memory. */
StringSource source(nar); if (method == FileIngestionMethod::Recursive)
restorePath(realPath, source); restorePath(realPath, dumpSource);
else
writeFile(realPath, dumpSource);
} else { } else {
/* Move the temporary path we restored above. */ /* Move the temporary path we restored above. */
if (rename(tempPath.c_str(), realPath.c_str())) if (rename(tempPath.c_str(), realPath.c_str()))
throw Error("renaming '%s' to '%s'", tempPath, realPath); throw Error("renaming '%s' to '%s'", tempPath, realPath);
} }
/* For computing the nar hash. In recursive SHA-256 mode, this
is the same as the store hash, so no need to do it again. */
auto narHash = std::pair { hash, size };
if (method != FileIngestionMethod::Recursive || hashAlgo != htSHA256) {
HashSink narSink { htSHA256 };
dumpPath(realPath, narSink);
narHash = narSink.finish();
}
canonicalisePathMetaData(realPath, -1); // FIXME: merge into restorePath canonicalisePathMetaData(realPath, -1); // FIXME: merge into restorePath
optimisePath(realPath); optimisePath(realPath);
ValidPathInfo info(dstPath); ValidPathInfo info(dstPath);
info.narHash = sha256.first; info.narHash = narHash.first;
info.narSize = sha256.second; info.narSize = narHash.second;
info.ca = FixedOutputHash { .method = method, .hash = hash }; info.ca = FixedOutputHash { .method = method, .hash = hash };
registerValidPath(info); registerValidPath(info);
} }

View file

@ -153,7 +153,7 @@ public:
in `dump', which is either a NAR serialisation (if recursive == in `dump', which is either a NAR serialisation (if recursive ==
true) or simply the contents of a regular file (if recursive == true) or simply the contents of a regular file (if recursive ==
false). */ false). */
StorePath addToStoreFromDump(const string & dump, const string & name, StorePath addToStoreFromDump(Source & dump, const string & name,
FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override; FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override;
StorePath addTextToStore(const string & name, const string & s, StorePath addTextToStore(const string & name, const string & s,

View file

@ -48,13 +48,12 @@ static void search(const unsigned char * s, size_t len,
struct RefScanSink : Sink struct RefScanSink : Sink
{ {
HashSink hashSink;
StringSet hashes; StringSet hashes;
StringSet seen; StringSet seen;
string tail; string tail;
RefScanSink() : hashSink(htSHA256) { } RefScanSink() { }
void operator () (const unsigned char * data, size_t len); void operator () (const unsigned char * data, size_t len);
}; };
@ -62,8 +61,6 @@ struct RefScanSink : Sink
void RefScanSink::operator () (const unsigned char * data, size_t len) void RefScanSink::operator () (const unsigned char * data, size_t len)
{ {
hashSink(data, len);
/* It's possible that a reference spans the previous and current /* It's possible that a reference spans the previous and current
fragment, so search in the concatenation of the tail of the fragment, so search in the concatenation of the tail of the
previous fragment and the start of the current fragment. */ previous fragment and the start of the current fragment. */
@ -82,7 +79,9 @@ void RefScanSink::operator () (const unsigned char * data, size_t len)
PathSet scanForReferences(const string & path, PathSet scanForReferences(const string & path,
const PathSet & refs, HashResult & hash) const PathSet & refs, HashResult & hash)
{ {
RefScanSink sink; RefScanSink refsSink;
HashSink hashSink { htSHA256 };
TeeSink sink { refsSink, hashSink };
std::map<string, Path> backMap; std::map<string, Path> backMap;
/* For efficiency (and a higher hit rate), just search for the /* For efficiency (and a higher hit rate), just search for the
@ -97,7 +96,7 @@ PathSet scanForReferences(const string & path,
assert(s.size() == refLength); assert(s.size() == refLength);
assert(backMap.find(s) == backMap.end()); assert(backMap.find(s) == backMap.end());
// parseHash(htSHA256, s); // parseHash(htSHA256, s);
sink.hashes.insert(s); refsSink.hashes.insert(s);
backMap[s] = i; backMap[s] = i;
} }
@ -106,13 +105,13 @@ PathSet scanForReferences(const string & path,
/* Map the hashes found back to their store paths. */ /* Map the hashes found back to their store paths. */
PathSet found; PathSet found;
for (auto & i : sink.seen) { for (auto & i : refsSink.seen) {
std::map<string, Path>::iterator j; std::map<string, Path>::iterator j;
if ((j = backMap.find(i)) == backMap.end()) abort(); if ((j = backMap.find(i)) == backMap.end()) abort();
found.insert(j->second); found.insert(j->second);
} }
hash = sink.hashSink.finish(); hash = hashSink.finish();
return found; return found;
} }

View file

@ -963,12 +963,20 @@ ref<Store> openStore(const std::string & uri_,
throw Error("don't know how to open Nix store '%s'", uri); throw Error("don't know how to open Nix store '%s'", uri);
} }
static bool isNonUriPath(const std::string & spec) {
return
// is not a URL
spec.find("://") == std::string::npos
// Has at least one path separator, and so isn't a single word that
// might be special like "auto"
&& spec.find("/") != std::string::npos;
}
StoreType getStoreType(const std::string & uri, const std::string & stateDir) StoreType getStoreType(const std::string & uri, const std::string & stateDir)
{ {
if (uri == "daemon") { if (uri == "daemon") {
return tDaemon; return tDaemon;
} else if (uri == "local" || hasPrefix(uri, "/")) { } else if (uri == "local" || isNonUriPath(uri)) {
return tLocal; return tLocal;
} else if (uri == "" || uri == "auto") { } else if (uri == "" || uri == "auto") {
if (access(stateDir.c_str(), R_OK | W_OK) == 0) if (access(stateDir.c_str(), R_OK | W_OK) == 0)
@ -992,8 +1000,9 @@ static RegisterStoreImplementation regStore([](
return std::shared_ptr<Store>(std::make_shared<UDSRemoteStore>(params)); return std::shared_ptr<Store>(std::make_shared<UDSRemoteStore>(params));
case tLocal: { case tLocal: {
Store::Params params2 = params; Store::Params params2 = params;
if (hasPrefix(uri, "/")) if (isNonUriPath(uri)) {
params2["root"] = uri; params2["root"] = absPath(uri);
}
return std::shared_ptr<Store>(std::make_shared<LocalStore>(params2)); return std::shared_ptr<Store>(std::make_shared<LocalStore>(params2));
} }
default: default:

View file

@ -460,7 +460,7 @@ public:
std::optional<Hash> expectedCAHash = {}); std::optional<Hash> expectedCAHash = {});
// FIXME: remove? // FIXME: remove?
virtual StorePath addToStoreFromDump(const string & dump, const string & name, virtual StorePath addToStoreFromDump(Source & dump, const string & name,
FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair)
{ {
throw Error("addToStoreFromDump() is not supported by this store"); throw Error("addToStoreFromDump() is not supported by this store");

View file

@ -322,5 +322,18 @@ void StringSink::operator () (const unsigned char * data, size_t len)
s->append((const char *) data, len); s->append((const char *) data, len);
} }
size_t ChainSource::read(unsigned char * data, size_t len)
{
if (useSecond) {
return source2.read(data, len);
} else {
try {
return source1.read(data, len);
} catch (EndOfFile &) {
useSecond = true;
return this->read(data, len);
}
}
}
} }

View file

@ -189,7 +189,7 @@ struct TeeSource : Source
size_t read(unsigned char * data, size_t len) size_t read(unsigned char * data, size_t len)
{ {
size_t n = orig.read(data, len); size_t n = orig.read(data, len);
sink(data, len); sink(data, n);
return n; return n;
} }
}; };
@ -256,6 +256,19 @@ struct LambdaSource : Source
} }
}; };
/* Chain two sources together so after the first is exhausted, the second is
used */
struct ChainSource : Source
{
Source & source1, & source2;
bool useSecond = false;
ChainSource(Source & s1, Source & s2)
: source1(s1), source2(s2)
{ }
size_t read(unsigned char * data, size_t len) override;
};
/* Convert a function that feeds data into a Sink into a Source. The /* Convert a function that feeds data into a Sink into a Source. The
Source executes the function as a coroutine. */ Source executes the function as a coroutine. */

View file

@ -111,6 +111,7 @@ struct CmdRegistryPin : virtual Args, EvalCommand
fetchers::Attrs extraAttrs; fetchers::Attrs extraAttrs;
if (ref.subdir != "") extraAttrs["dir"] = ref.subdir; if (ref.subdir != "") extraAttrs["dir"] = ref.subdir;
userRegistry->add(ref.input, resolved, extraAttrs); userRegistry->add(ref.input, resolved, extraAttrs);
userRegistry->write(fetchers::getUserRegistryPath());
} }
}; };

20
tests/local-store.sh Normal file
View file

@ -0,0 +1,20 @@
source common.sh
cd $TEST_ROOT
echo example > example.txt
mkdir -p ./x
NIX_STORE_DIR=$TEST_ROOT/x
CORRECT_PATH=$(nix-store --store ./x --add example.txt)
PATH1=$(nix path-info --store ./x $CORRECT_PATH)
[ $CORRECT_PATH == $PATH1 ]
PATH2=$(nix path-info --store "$PWD/x" $CORRECT_PATH)
[ $CORRECT_PATH == $PATH2 ]
# FIXME we could also test the query parameter version:
# PATH3=$(nix path-info --store "local?store=$PWD/x" $CORRECT_PATH)
# [ $CORRECT_PATH == $PATH3 ]

View file

@ -6,7 +6,7 @@ nix_tests = \
gc-auto.sh \ gc-auto.sh \
referrers.sh user-envs.sh logging.sh nix-build.sh misc.sh fixed.sh \ referrers.sh user-envs.sh logging.sh nix-build.sh misc.sh fixed.sh \
gc-runtime.sh check-refs.sh filter-source.sh \ gc-runtime.sh check-refs.sh filter-source.sh \
remote-store.sh export.sh export-graph.sh \ local-store.sh remote-store.sh export.sh export-graph.sh \
timeout.sh secure-drv-outputs.sh nix-channel.sh \ timeout.sh secure-drv-outputs.sh nix-channel.sh \
multiple-outputs.sh import-derivation.sh fetchurl.sh optimise-store.sh \ multiple-outputs.sh import-derivation.sh fetchurl.sh optimise-store.sh \
binary-cache.sh nix-profile.sh repair.sh dump-db.sh case-hack.sh \ binary-cache.sh nix-profile.sh repair.sh dump-db.sh case-hack.sh \