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* Really fix the substitute mechanism, i.e., ensure the closure

Browse source 
invariant by registering references through the manifest.
* Added a test for nix-pull.
This commit is contained in:
Eelco Dolstra 2005-01-25 17:08:52 +00:00
parent c6290e42bc
commit 066da4ab85
16 changed files with 255 additions and 89 deletions
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6
corepkgs/nar/Makefile.am
View file

@ -1,13 +1,11 @@
all-local: nar.sh unnar.sh
all-local: nar.sh
install-exec-local:
$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs
$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs/nar
$(INSTALL_DATA) nar.nix $(DESTDIR)$(datadir)/nix/corepkgs/nar
$(INSTALL_PROGRAM) nar.sh $(DESTDIR)$(datadir)/nix/corepkgs/nar
$(INSTALL_DATA) unnar.nix $(DESTDIR)$(datadir)/nix/corepkgs/nar
$(INSTALL_PROGRAM) unnar.sh $(DESTDIR)$(datadir)/nix/corepkgs/nar
include ../../substitute.mk
EXTRA_DIST = nar.nix nar.sh.in unnar.nix unnar.sh.in
EXTRA_DIST = nar.nix nar.sh.in

8
corepkgs/nar/nar.sh.in
View file

@ -10,10 +10,6 @@ dst=$out/$(basename $path).nar.bz2
@bzip2@ < tmp > $dst
narHash=$(md5sum -b tmp | cut -c1-32)
if test $? != 0; then exit 1; fi
echo $narHash > $out/nar-hash
@bindir@/nix-hash -vvvvv --flat --type sha1 --base32 tmp > $out/nar-hash
narbz2Hash=$(md5sum -b $dst | cut -c1-32)
if test $? != 0; then exit 1; fi
echo $narbz2Hash > $out/narbz2-hash
@bindir@/nix-hash --flat --type sha1 --base32 $dst > $out/narbz2-hash

7
corepkgs/nar/unnar.nix
View file

@ -1,7 +0,0 @@
{system, narFile, outPath}: derivation {
name = "unnar";
builder = ./unnar.sh;
system = system;
narFile = narFile;
outPath = outPath;
}

4
corepkgs/nar/unnar.sh.in
View file

@ -1,4 +0,0 @@
#! @shell@ -e
echo "unpacking $narFile to $out..."
@bunzip2@ < $narFile | @bindir@/nix-store --restore "$out"

6
scripts/download-using-manifests.pl.in
View file

@ -13,7 +13,7 @@ open LOGFILE, ">>$logFile" or die "cannot open log file $logFile";
die unless scalar @ARGV == 1;
my $targetPath = $ARGV[0];
my $date = `date`;
my $date = `date` or die;
chomp $date;
print LOGFILE "$$ get $targetPath $date\n";
@ -180,7 +180,7 @@ sub downloadFile {
my ($hash2, $path) = `@bindir@/nix-prefetch-url '$url' '$hash'`;
chomp $hash2;
chomp $path;
die "hash mismatch" if $hash ne $hash2;
die "hash mismatch, expected $hash, got $hash2" if $hash ne $hash2;
return $path;
}
@ -236,7 +236,7 @@ while (scalar @path > 0) {
# Unpack the archive into the target path.
print " unpacking archive...\n";
system "@bunzip2@ < '$narFilePath' | nix-store --restore '$v'";
system "@bunzip2@ < '$narFilePath' | @bindir@/nix-store --restore '$v'";
die "cannot unpack `$narFilePath' into `$v'" if ($? != 0);
}
}

4
scripts/nix-prefetch-url.in
View file

@ -46,10 +46,8 @@ storeExpr=$( \
{url = $url; outputHashAlgo = \"$hashType\"; outputHash = \"$hash\"; system = \"@system@\";}" \
| @bindir@/nix-instantiate -)
echo "$storeExpr"
# Realise it.
finalPath=$(@bindir@/nix-store -qnB --force-realise $storeExpr)
finalPath=$(@bindir@/nix-store -q --force-realise $storeExpr)
if ! test -n "$QUIET"; then echo "path is $finalPath" >&2; fi

36
scripts/nix-pull.in
View file

@ -13,6 +13,15 @@ my $manifest = "$tmpdir/manifest";
END { unlink $manifest; rmdir $tmpdir; }
my $binDir = $ENV{"NIX_BIN_DIR"};
$binDir = "@bindir@" unless defined $binDir;
my $libexecDir = $ENV{"NIX_LIBEXEC_DIR"};
$libexecDir = "@libexecdir@" unless defined $libexecDir;
my $localStateDir = $ENV{"NIX_LOCALSTATE_DIR"};
$localStateDir = "@localstatedir@" unless defined $localStateDir;
# Obtain URLs either from the command line or from a configuration file.
my %narFiles;
@ -36,11 +45,11 @@ sub processURL {
$baseName = $1;
}
my $hash = `@bindir@/nix-hash --flat '$manifest'`
my $hash = `$binDir/nix-hash --flat '$manifest'`
or die "cannot hash `$manifest'";
chomp $hash;
my $finalPath = "@localstatedir@/nix/manifests/$baseName-$hash.nixmanifest";
my $finalPath = "$localStateDir/nix/manifests/$baseName-$hash.nixmanifest";
system("mv '$manifest' '$finalPath'") == 0
or die "cannot move `$manifest' to `$finalPath";
@ -59,7 +68,7 @@ print "$size store paths in manifest\n";
# Register all substitutes.
print STDERR "registering substitutes...\n";
my $pid = open2(\*READ, \*WRITE, "@bindir@/nix-store --substitute")
my $pid = open2(\*READ, \*WRITE, "$binDir/nix-store --substitute")
or die "cannot run nix-store";
close READ;
@ -68,8 +77,14 @@ foreach my $storePath (keys %narFiles) {
my $narFileList = $narFiles{$storePath};
foreach my $narFile (@{$narFileList}) {
print WRITE "$storePath\n";
print WRITE "@libexecdir@/nix/download-using-manifests.pl\n";
print WRITE "$libexecDir/nix/download-using-manifests.pl\n";
print WRITE "0\n";
my @references = split " ", $narFile->{references};
my $count = scalar @references;
print WRITE "$count\n";
foreach my $reference (@references) {
print WRITE "$reference\n";
}
}
}
@ -77,16 +92,3 @@ close WRITE;
waitpid $pid, 0;
$? == 0 or die "nix-store failed";
# Register all successors.
print STDERR "registering successors...\n";
my @sucs = %successors;
while (scalar @sucs > 0) {
my $n = scalar @sucs;
if ($n > 256) { $n = 256 };
my @sucs2 = @sucs[0..$n - 1];
@sucs = @sucs[$n..scalar @sucs - 1];
system "@bindir@/nix-store --successor @sucs2";
if ($?) { die "`nix-store --successor' failed"; }
}

99
scripts/nix-push.in
View file

@ -1,6 +1,7 @@
#! @perl@ -w -I@libexecdir@/nix
use strict;
use IPC::Open2;
use POSIX qw(tmpnam);
use readmanifest;
@ -17,32 +18,62 @@ my $curl = "@curl@ --fail --silent";
my $extraCurlFlags = ${ENV{'CURL_FLAGS'}};
$curl = "$curl $extraCurlFlags" if defined $extraCurlFlags;
my $binDir = $ENV{"NIX_BIN_DIR"};
$binDir = "@bindir@" unless defined $binDir;
my $dataDir = $ENV{"NIX_DATA_DIR"};
$dataDir = "@datadir@" unless defined $dataDir;
# Parse the command line.
my $archives_put_url = shift @ARGV;
my $archives_get_url = shift @ARGV;
my $manifest_put_url = shift @ARGV;
my $localCopy;
my $localArchivesDir;
my $localManifestFile;
my $archives_put_url;
my $archives_get_url;
my $manifest_put_url;
if ($ARGV[0] eq "--copy") {
die "syntax: nix-push --copy ARCHIVES_DIR MANIFEST_FILE PATHS...\n" if scalar @ARGV < 3;
$localCopy = 1;
shift @ARGV;
$localArchivesDir = shift @ARGV;
$localManifestFile = shift @ARGV;
}
else {
die "syntax: nix-push ARCHIVES_PUT_URL ARCHIVES_GET_URL " .
"MANIFEST_PUT_URL PATHS...\n" if scalar @ARGV < 3;
$localCopy = 0;
$archives_put_url = shift @ARGV;
$archives_get_url = shift @ARGV;
$manifest_put_url = shift @ARGV;
}
# From the given store expressions, determine the requisite store
# paths.
# From the given store paths, determine the set of requisite store
# paths, i.e, the paths required to realise them.
my %storePaths;
foreach my $storeexpr (@ARGV) {
die unless $storeexpr =~ /^\//;
foreach my $path (@ARGV) {
die unless $path =~ /^\//;
# Get all paths referenced by the normalisation of the given
# Nix expression.
system "@bindir@/nix-store --realise $storeexpr > /dev/null";
die if ($?);
my $pid = open2(\*READ, \*WRITE,
"$binDir/nix-store --query --requisites --force-realise " .
"--include-outputs '$path'") or die;
close WRITE;
open PATHS, "@bindir@/nix-store --query --requisites --include-successors $storeexpr 2> /dev/null |" or die;
while (<PATHS>) {
while (<READ>) {
chomp;
die "bad: $_" unless /^\//;
$storePaths{$_} = "";
}
close PATHS;
close READ;
waitpid $pid, 0;
$? == 0 or die "nix-store failed";
}
my @storePaths = keys %storePaths;
@ -58,8 +89,7 @@ foreach my $storePath (@storePaths) {
# Construct a Nix expression that creates a Nix archive.
my $nixexpr =
"((import @datadir@/nix/corepkgs/nar/nar.nix) " .
# !!! $storePath should be represented as a closure
"((import $dataDir/nix/corepkgs/nar/nar.nix) " .
"{path = \"$storePath\"; system = \"@system@\";}) ";
print NIX $nixexpr;
@ -72,7 +102,7 @@ close NIX;
# Instantiate store expressions from the Nix expression.
my @storeexprs;
print STDERR "instantiating store expressions...\n";
open STOREEXPRS, "@bindir@/nix-instantiate $nixfile |" or die "cannot run nix-instantiate";
open STOREEXPRS, "$binDir/nix-instantiate $nixfile |" or die "cannot run nix-instantiate";
while (<STOREEXPRS>) {
chomp;
die unless /^\//;
@ -93,10 +123,7 @@ while (scalar @tmp > 0) {
my @tmp2 = @tmp[0..$n - 1];
@tmp = @tmp[$n..scalar @tmp - 1];
system "@bindir@/nix-store --realise @tmp2 > /dev/null";
if ($?) { die "`nix-store --realise' failed"; }
open NARPATHS, "@bindir@/nix-store --query --list @tmp2 |" or die "cannot run nix";
open NARPATHS, "$binDir/nix-store --realise @tmp2 |" or die "cannot run nix-store";
while (<NARPATHS>) {
chomp;
die unless (/^\//);
@ -142,16 +169,26 @@ for (my $n = 0; $n < scalar @storePaths; $n++) {
my $narbz2Size = (stat $narfile)[7];
my $references = join(" ", split(" ", `$binDir/nix-store --query --references '$storePath'`));
my $url;
if ($localCopy) {
$url = "file://$localArchivesDir/$narname";
} else {
$url = "$archives_get_url/$narname";
}
$narFiles{$storePath} = [
{ url => $archives_get_url/$narname
{ url => $url
, hash => $narbz2Hash
, size => $narbz2Size
, narHash => $narHash
, hashAlgo => "sha1"
, references => $references
}
];
if ($storePath =~ /\.store$/) {
open PREDS, "@bindir@/nix-store --query --predecessors $storePath |" or die "cannot run nix";
open PREDS, "$binDir/nix-store --query --predecessors $storePath |" or die "cannot run nix";
while (<PREDS>) {
chomp;
die unless (/^\//);
@ -170,6 +207,14 @@ for (my $n = 0; $n < scalar @storePaths; $n++) {
writeManifest $manifest, \%narFiles, \%patches, \%successors;
sub copyFile {
my $src = shift;
my $dst = shift;
system("cp '$src' '$dst.tmp'") == 0 or die "cannot copy file";
rename("$dst.tmp", "$dst") or die "cannot rename file";
}
# Upload the archives.
print STDERR "uploading archives...\n";
foreach my $nararchive (@nararchives) {
@ -177,6 +222,13 @@ foreach my $nararchive (@nararchives) {
$nararchive =~ /\/([^\/]*)$/;
my $basename = $1;
if ($localCopy) {
if (! -f "$localArchivesDir/$basename") {
print STDERR " $nararchive\n";
copyFile $nararchive, "$localArchivesDir/$basename";
}
}
else {
if (system("$curl --head $archives_get_url/$basename > /dev/null") != 0) {
print STDERR " $nararchive\n";
system("$curl --show-error --upload-file " .
@ -184,10 +236,15 @@ foreach my $nararchive (@nararchives) {
die "curl failed on $nararchive: $?";
}
}
}
# Upload the manifest.
print STDERR "uploading manifest...\n";
if ($localCopy) {
copyFile $manifest, $localManifestFile;
} else {
system("$curl --show-error --upload-file " .
"'$manifest' '$manifest_put_url' > /dev/null") == 0 or
die "curl failed on $manifest: $?";
}

9
scripts/readmanifest.pm.in
View file

@ -49,6 +49,7 @@ sub readManifest {
my $baseHash;
my $patchType;
my $narHash;
my $references;
while (<MANIFEST>) {
chomp;
@ -70,6 +71,7 @@ sub readManifest {
undef $basePath;
undef $baseHash;
undef $patchType;
$references = "";
}
} else {
@ -98,7 +100,7 @@ sub readManifest {
if (!$found) {
push @{$narFileList},
{ url => $url, hash => $hash, size => $size
, narHash => $narHash
, narHash => $narHash, references => $references
};
}
@ -127,6 +129,7 @@ sub readManifest {
elsif (/^\s*BaseHash:\s*(\S+)\s*$/) { $baseHash = $1; }
elsif (/^\s*Type:\s*(\S+)\s*$/) { $patchType = $1; }
elsif (/^\s*NarHash:\s*(\S+)\s*$/) { $narHash = $1; }
elsif (/^\s*References:\s*(.*)\s*$/) { $references = $1; }
# Compatibility;
elsif (/^\s*NarURL:\s*(\S+)\s*$/) { $url = $1; }
@ -153,10 +156,13 @@ sub writeManifest
foreach my $narFile (@{$narFileList}) {
print MANIFEST "{\n";
print MANIFEST " StorePath: $storePath\n";
print MANIFEST " HashAlgo: $narFile->{hashAlgo}\n";
print MANIFEST " NarURL: $narFile->{url}\n";
print MANIFEST " MD5: $narFile->{hash}\n";
print MANIFEST " NarHash: $narFile->{narHash}\n";
print MANIFEST " Size: $narFile->{size}\n";
print MANIFEST " References: $narFile->{references}\n"
if defined $narFile->{references} && $narFile->{references} ne "";
foreach my $p (keys %{$successors}) { # !!! quadratic
if ($$successors{$p} eq $storePath) {
print MANIFEST " SuccOf: $p\n";
@ -171,6 +177,7 @@ sub writeManifest
foreach my $patch (@{$patchList}) {
print MANIFEST "patch {\n";
print MANIFEST " StorePath: $storePath\n";
print MANIFEST " HashAlgo: $patch->{hashAlgo}\n";
print MANIFEST " NarURL: $patch->{url}\n";
print MANIFEST " MD5: $patch->{hash}\n";
print MANIFEST " NarHash: $patch->{narHash}\n";

39
src/libstore/build.cc
View file

@ -472,9 +472,8 @@ void DerivationGoal::outputsSubstituted()
{
trace("all outputs substituted (maybe)");
if (nrFailed > 0 && !tryFallback) {
if (nrFailed > 0 && !tryFallback)
throw Error(format("some substitutes for the outputs of derivation `%1%' failed; try `--fallback'") % drvPath);
}
nrFailed = 0;
@ -1252,6 +1251,9 @@ private:
/* The current substitute. */
Substitute sub;
/* Outgoing references for this path. */
PathSet references;
/* Pipe for the substitute's standard output/error. */
Pipe logPipe;
@ -1272,6 +1274,7 @@ public:
/* The states. */
void init();
void referencesValid();
void tryNext();
void tryToRun();
void finished();
@ -1313,13 +1316,35 @@ void SubstitutionGoal::init()
return;
}
/* !!! build the outgoing references of this path first to
maintain the closure invariant! */
/* Otherwise, get the substitutes. */
/* Read the substitutes. */
subs = querySubstitutes(storePath);
/* Try the first one. */
/* To maintain the closure invairant, we first have to realise the
paths referenced by this one. */
queryReferences(storePath, references);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)
addWaitee(worker.makeSubstitutionGoal(*i));
if (waitees.empty()) /* to prevent hang (no wake-up event) */
referencesValid();
else
state = &SubstitutionGoal::referencesValid;
}
void SubstitutionGoal::referencesValid()
{
trace("all referenced realised");
if (nrFailed > 0)
throw Error(format("some references of path `%1%' could not be realised") % storePath);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)
assert(isValidPath(*i));
tryNext();
}

8
src/libstore/store.cc
View file

@ -265,8 +265,8 @@ void setReferences(const Transaction & txn, const Path & storePath,
void queryReferences(const Path & storePath, PathSet & references)
{
Paths references2;
if (!isValidPath(storePath))
throw Error(format("path `%1%' is not valid") % storePath);
// if (!isValidPath(storePath))
// throw Error(format("path `%1%' is not valid") % storePath);
nixDB.queryStrings(noTxn, dbReferences, storePath, references2);
references.insert(references2.begin(), references2.end());
}
@ -275,8 +275,8 @@ void queryReferences(const Path & storePath, PathSet & references)
void queryReferers(const Path & storePath, PathSet & referers)
{
Paths referers2;
if (!isValidPath(storePath))
throw Error(format("path `%1%' is not valid") % storePath);
// if (!isValidPath(storePath))
// throw Error(format("path `%1%' is not valid") % storePath);
nixDB.queryStrings(noTxn, dbReferers, storePath, referers2);
referers.insert(referers2.begin(), referers2.end());
}

10
src/nix-store/main.cc
View file

@ -177,19 +177,27 @@ static void opSubstitute(Strings opFlags, Strings opArgs)
while (1) {
Path srcPath;
Substitute sub;
PathSet references;
getline(cin, srcPath);
if (cin.eof()) break;
getline(cin, sub.program);
string s;
getline(cin, s);
int n;
getline(cin, s);
if (!string2Int(s, n)) throw Error("number expected");
while (n--) {
getline(cin, s);
sub.args.push_back(s);
}
getline(cin, s);
if (!string2Int(s, n)) throw Error("number expected");
while (n--) {
getline(cin, s);
references.insert(s);
}
if (!cin || cin.eof()) throw Error("missing input");
subPairs.push_back(pair<Path, Substitute>(srcPath, sub));
setReferences(txn, srcPath, references);
}
registerSubstitutes(txn, subPairs);

18
tests/Makefile.am
View file

@ -8,7 +8,16 @@ TESTS_ENVIRONMENT = TEST_ROOT=$(TEST_ROOT) \
NIX_LOG_DIR=$(TEST_ROOT)/log \
NIX_STATE_DIR=$(TEST_ROOT)/state \
NIX_DB_DIR=$(TEST_ROOT)/db \
NIX_BIN_DIR=$(TEST_ROOT)/bin \
NIX_LIBEXEC_DIR=$(TEST_ROOT)/bin \
NIX_LOCALSTATE_DIR=$(TEST_ROOT)/state \
REAL_BIN_DIR=$(bindir) \
REAL_LIBEXEC_DIR=$(libexecdir) \
REAL_LOCALSTATE_DIR=$(localstatedir) \
REAL_DATA_DIR=$(datadir) \
REAL_STORE_DIR=$(storedir) \
NIX_BUILD_HOOK= \
PERL=$(perl) \
TOP=$(shell pwd)/.. \
SHARED=$(extra1) \
aterm_bin=$(aterm_bin) \
@ -22,9 +31,14 @@ build-hook.sh: build-hook.nix
substitutes.sh: substitutes.nix
substitutes2.sh: substitutes2.nix
fallback.sh: fallback.nix
nix-push.sh: dependencies.nix
nix-pull.sh: dependencies.nix
TESTS = init.sh hash.sh lang.sh simple.sh dependencies.sh locking.sh parallel.sh \
build-hook.sh substitutes.sh substitutes2.sh fallback.sh verify.sh
#TESTS = init.sh hash.sh lang.sh simple.sh dependencies.sh locking.sh parallel.sh \
# build-hook.sh substitutes.sh substitutes2.sh fallback.sh nix-push.sh verify.sh \
# nix-pull.sh
TESTS = init.sh nix-push.sh nix-pull.sh
XFAIL_TESTS =

30
tests/init.sh
View file

@ -13,6 +13,36 @@ mkdir "$NIX_LOG_DIR"
mkdir "$NIX_STATE_DIR"
mkdir "$NIX_DB_DIR"
mkdir $NIX_BIN_DIR
ln -s $TOP/src/nix-store/nix-store $NIX_BIN_DIR/
ln -s $TOP/src/nix-instantiate/nix-instantiate $NIX_BIN_DIR/
ln -s $TOP/src/nix-hash/nix-hash $NIX_BIN_DIR/
ln -s $TOP/scripts/nix-prefetch-url $NIX_BIN_DIR/
mkdir $NIX_BIN_DIR/nix
ln -s $TOP/scripts/download-using-manifests.pl $NIX_BIN_DIR/nix/
ln -s $TOP/scripts/readmanifest.pm $NIX_BIN_DIR/nix/
mkdir -p "$NIX_LOCALSTATE_DIR"/nix/manifests
mkdir -p "$NIX_LOCALSTATE_DIR"/log/nix
mkdir $NIX_DATA_DIR/nix
cp -prd $TOP/corepkgs $NIX_DATA_DIR/nix/
# Bah, script has the prefix hard-coded.
for i in $NIX_DATA_DIR/nix/corepkgs/nar/nar.sh \
$NIX_BIN_DIR/nix/download-using-manifests.pl \
$NIX_BIN_DIR/nix-prefetch-url \
; do
echo "$REAL_BIN_DIR"
sed < $i > $i.tmp \
-e "s^$REAL_BIN_DIR^$NIX_BIN_DIR^" \
-e "s^$REAL_LIBEXEC_DIR^$NIX_LIBEXEC_DIR^" \
-e "s^$REAL_LOCALSTATE_DIR^$NIX_LOCALSTATE_DIR^" \
-e "s^$REAL_DATA_DIR^$NIX_DATA_DIR^" \
-e "s^$REAL_STORE_DIR^$NIX_STORE_DIR^"
mv $i.tmp $i
chmod +x $i
done
# Initialise the database.
$TOP/src/nix-store/nix-store --init

33
tests/nix-pull.sh Normal file
View file

@ -0,0 +1,33 @@
clearStore () {
echo "clearing store..."
chmod -R +w "$NIX_STORE_DIR"
rm -rf "$NIX_STORE_DIR"
mkdir "$NIX_STORE_DIR"
rm -rf "$NIX_DB_DIR"
mkdir "$NIX_DB_DIR"
$TOP/src/nix-store/nix-store --init
}
pullCache () {
echo "pulling cache..."
$PERL -w -I$TOP/scripts $TOP/scripts/nix-pull file://$TEST_ROOT/manifest
}
clearStore
pullCache
drvPath=$($TOP/src/nix-instantiate/nix-instantiate dependencies.nix)
outPath=$($TOP/src/nix-store/nix-store -q $drvPath)
echo "building $outPath using substitutes..."
$TOP/src/nix-store/nix-store -r $outPath
cat $outPath/input-2/bar
clearStore
pullCache
echo "building $drvPath using substitutes..."
$TOP/src/nix-store/nix-store -r $drvPath
cat $outPath/input-2/bar

9
tests/nix-push.sh Normal file
View file

@ -0,0 +1,9 @@
drvPath=$($TOP/src/nix-instantiate/nix-instantiate dependencies.nix)
outPath=$($TOP/src/nix-store/nix-store -r $drvPath)
echo "pushing $drvPath"
mkdir $TEST_ROOT/cache
$PERL -w -I$TOP/scripts $TOP/scripts/nix-push \
--copy $TEST_ROOT/cache $TEST_ROOT/manifest $drvPath