mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-10 16:26:18 +02:00
c4d22997f3
This is currently only used by the Hydra queue runner rework, but like
eff5021eaa it presumably will be useful
for the C++ rewrite of nix-push and
download-from-binary-cache. (@shlevy)
296 lines
9.3 KiB
Text
Executable file
296 lines
9.3 KiB
Text
Executable file
#! @perl@ -w @perlFlags@
|
||
|
||
use utf8;
|
||
use strict;
|
||
use File::Basename;
|
||
use File::Path qw(mkpath);
|
||
use File::stat;
|
||
use File::Copy;
|
||
use MIME::Base64;
|
||
use Nix::Config;
|
||
use Nix::Store;
|
||
use Nix::Manifest;
|
||
use Nix::Utils;
|
||
|
||
binmode STDERR, ":encoding(utf8)";
|
||
|
||
my $tmpDir = mkTempDir("nix-push");
|
||
|
||
my $nixExpr = "$tmpDir/create-nars.nix";
|
||
|
||
|
||
# Parse the command line.
|
||
my $compressionType = "xz";
|
||
my $force = 0;
|
||
my $destDir;
|
||
my $writeManifest = 0;
|
||
my $manifestPath;
|
||
my $archivesURL;
|
||
my $link = 0;
|
||
my $secretKeyFile;
|
||
my @roots;
|
||
my @buildArgs;
|
||
|
||
for (my $n = 0; $n < scalar @ARGV; $n++) {
|
||
my $arg = $ARGV[$n];
|
||
|
||
if ($arg eq "--help") {
|
||
exec "man nix-push" or die;
|
||
} elsif ($arg eq "--bzip2") {
|
||
$compressionType = "bzip2";
|
||
} elsif ($arg eq "--none") {
|
||
$compressionType = "none";
|
||
} elsif ($arg eq "--force") {
|
||
$force = 1;
|
||
} elsif ($arg eq "--dest") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
$destDir = $ARGV[$n];
|
||
mkpath($destDir, 0, 0755);
|
||
} elsif ($arg eq "--manifest") {
|
||
$writeManifest = 1;
|
||
} elsif ($arg eq "--manifest-path") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
$manifestPath = $ARGV[$n];
|
||
$writeManifest = 1;
|
||
mkpath(dirname($manifestPath), 0, 0755);
|
||
} elsif ($arg eq "--url-prefix") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
$archivesURL = $ARGV[$n];
|
||
} elsif ($arg eq "--link") {
|
||
$link = 1;
|
||
} elsif ($arg eq "--key-file") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
$secretKeyFile = $ARGV[$n];
|
||
} elsif ($arg eq "--max-jobs" || $arg eq "-j") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
push @buildArgs, ($arg, $ARGV[$n]);
|
||
} elsif (substr($arg, 0, 1) eq "-") {
|
||
die "$0: unknown flag ‘$arg’\n";
|
||
} else {
|
||
push @roots, $arg;
|
||
}
|
||
}
|
||
|
||
die "$0: please specify a destination directory\n" if !defined $destDir;
|
||
|
||
$archivesURL = "file://$destDir" unless defined $archivesURL;
|
||
|
||
|
||
# From the given store paths, determine the set of requisite store
|
||
# paths, i.e, the paths required to realise them.
|
||
my %storePaths;
|
||
|
||
foreach my $path (@roots) {
|
||
# Get all paths referenced by the normalisation of the given
|
||
# Nix expression.
|
||
my $pid = open(READ,
|
||
"$Nix::Config::binDir/nix-store --query --requisites --force-realise " .
|
||
"--include-outputs '$path'|") or die;
|
||
|
||
while (<READ>) {
|
||
chomp;
|
||
die "bad: $_" unless /^\//;
|
||
$storePaths{$_} = "";
|
||
}
|
||
|
||
close READ or die "nix-store failed: $?";
|
||
}
|
||
|
||
my @storePaths = keys %storePaths;
|
||
|
||
|
||
# Don't create archives for files that are already in the binary cache.
|
||
my @storePaths2;
|
||
my %narFiles;
|
||
foreach my $storePath (@storePaths) {
|
||
my $pathHash = substr(basename($storePath), 0, 32);
|
||
my $narInfoFile = "$destDir/$pathHash.narinfo";
|
||
if (!$force && -e $narInfoFile) {
|
||
my $narInfo = parseNARInfo($storePath, readFile($narInfoFile), 0, $narInfoFile) or die "cannot read ‘$narInfoFile’\n";
|
||
my $narFile = "$destDir/$narInfo->{url}";
|
||
if (-e $narFile) {
|
||
print STDERR "skipping existing $storePath\n";
|
||
# Add the NAR info to $narFiles if we're writing a
|
||
# manifest.
|
||
$narFiles{$storePath} = [
|
||
{ url => ("$archivesURL/" . basename $narInfo->{url})
|
||
, hash => $narInfo->{fileHash}
|
||
, size => $narInfo->{fileSize}
|
||
, compressionType => $narInfo->{compression}
|
||
, narHash => $narInfo->{narHash}
|
||
, narSize => $narInfo->{narSize}
|
||
, references => join(" ", map { "$Nix::Config::storeDir/$_" } @{$narInfo->{refs}})
|
||
, deriver => $narInfo->{deriver} ? "$Nix::Config::storeDir/$narInfo->{deriver}" : undef
|
||
}
|
||
] if $writeManifest;
|
||
next;
|
||
}
|
||
}
|
||
push @storePaths2, $storePath;
|
||
}
|
||
|
||
|
||
# Create a list of Nix derivations that turn each path into a Nix
|
||
# archive.
|
||
open NIX, ">$nixExpr";
|
||
print NIX "[";
|
||
|
||
foreach my $storePath (@storePaths2) {
|
||
die unless ($storePath =~ /\/[0-9a-z]{32}[^\"\\\$]*$/);
|
||
|
||
# Construct a Nix expression that creates a Nix archive.
|
||
my $nixexpr =
|
||
"(import <nix/nar.nix> " .
|
||
"{ storePath = builtins.storePath \"$storePath\"; hashAlgo = \"sha256\"; compressionType = \"$compressionType\"; }) ";
|
||
|
||
print NIX $nixexpr;
|
||
}
|
||
|
||
print NIX "]";
|
||
close NIX;
|
||
|
||
|
||
# Build the Nix expression.
|
||
print STDERR "building compressed archives...\n";
|
||
my @narPaths;
|
||
my $pid = open(READ, "-|", "$Nix::Config::binDir/nix-build", $nixExpr, "-o", "$tmpDir/result", @buildArgs)
|
||
or die "cannot run nix-build";
|
||
while (<READ>) {
|
||
chomp;
|
||
die unless /^\//;
|
||
push @narPaths, $_;
|
||
}
|
||
close READ or die "nix-build failed: $?";
|
||
|
||
|
||
# Write the cache info file.
|
||
my $cacheInfoFile = "$destDir/nix-cache-info";
|
||
if (! -e $cacheInfoFile) {
|
||
open FILE, ">$cacheInfoFile" or die "cannot create $cacheInfoFile: $!";
|
||
print FILE "StoreDir: $Nix::Config::storeDir\n";
|
||
print FILE "WantMassQuery: 0\n"; # by default, don't hit this cache for "nix-env -qas"
|
||
close FILE;
|
||
}
|
||
|
||
|
||
# Copy the archives and the corresponding NAR info files.
|
||
print STDERR "copying archives...\n";
|
||
|
||
my $totalNarSize = 0;
|
||
my $totalCompressedSize = 0;
|
||
|
||
for (my $n = 0; $n < scalar @storePaths2; $n++) {
|
||
my $storePath = $storePaths2[$n];
|
||
my $narDir = $narPaths[$n];
|
||
my $baseName = basename $storePath;
|
||
|
||
# Get info about the store path.
|
||
my ($deriver, $narHash, $time, $narSize, $refs) = queryPathInfo($storePath, 1);
|
||
|
||
# In some exceptional cases (such as VM tests that use the Nix
|
||
# store of the host), the database doesn't contain the hash. So
|
||
# compute it.
|
||
if ($narHash =~ /^sha256:0*$/) {
|
||
my $nar = "$tmpDir/nar";
|
||
system("$Nix::Config::binDir/nix-store --dump $storePath > $nar") == 0
|
||
or die "cannot dump $storePath\n";
|
||
$narHash = `$Nix::Config::binDir/nix-hash --type sha256 --base32 --flat $nar`;
|
||
die "cannot hash ‘$nar’" if $? != 0;
|
||
chomp $narHash;
|
||
$narHash = "sha256:$narHash";
|
||
$narSize = stat("$nar")->size;
|
||
unlink $nar or die;
|
||
}
|
||
|
||
$totalNarSize += $narSize;
|
||
|
||
# Get info about the compressed NAR.
|
||
open HASH, "$narDir/nar-compressed-hash" or die "cannot open nar-compressed-hash";
|
||
my $compressedHash = <HASH>;
|
||
chomp $compressedHash;
|
||
$compressedHash =~ /^[0-9a-z]+$/ or die "invalid hash";
|
||
close HASH;
|
||
|
||
my $narName = "$compressedHash.nar" . ($compressionType eq "xz" ? ".xz" : $compressionType eq "bzip2" ? ".bz2" : "");
|
||
|
||
my $narFile = "$narDir/$narName";
|
||
(-f $narFile) or die "NAR file for $storePath not found";
|
||
|
||
my $compressedSize = stat($narFile)->size;
|
||
$totalCompressedSize += $compressedSize;
|
||
|
||
printf STDERR "%s [%.2f MiB, %.1f%%]\n", $storePath,
|
||
$compressedSize / (1024 * 1024), $compressedSize / $narSize * 100;
|
||
|
||
# Copy the compressed NAR.
|
||
my $dst = "$destDir/$narName";
|
||
if (! -f $dst) {
|
||
my $tmp = "$destDir/.tmp.$$.$narName";
|
||
if ($link) {
|
||
link($narFile, $tmp) or die "cannot link $tmp to $narFile: $!\n";
|
||
} else {
|
||
copy($narFile, $tmp) or die "cannot copy $narFile to $tmp: $!\n";
|
||
}
|
||
rename($tmp, $dst) or die "cannot rename $tmp to $dst: $!\n";
|
||
}
|
||
|
||
# Write the info file.
|
||
my $info;
|
||
$info .= "StorePath: $storePath\n";
|
||
$info .= "URL: $narName\n";
|
||
$info .= "Compression: $compressionType\n";
|
||
$info .= "FileHash: sha256:$compressedHash\n";
|
||
$info .= "FileSize: $compressedSize\n";
|
||
$info .= "NarHash: $narHash\n";
|
||
$info .= "NarSize: $narSize\n";
|
||
$info .= "References: " . join(" ", map { basename $_ } @{$refs}) . "\n";
|
||
if (defined $deriver) {
|
||
$info .= "Deriver: " . basename $deriver . "\n";
|
||
if (isValidPath($deriver)) {
|
||
my $drv = derivationFromPath($deriver);
|
||
$info .= "System: $drv->{platform}\n";
|
||
}
|
||
}
|
||
|
||
if (defined $secretKeyFile) {
|
||
my $secretKey = readFile $secretKeyFile;
|
||
my $fingerprint = fingerprintPath($storePath, $narHash, $narSize, $refs);
|
||
my $sig = signString($secretKey, $fingerprint);
|
||
$info .= "Sig: $sig\n";
|
||
}
|
||
|
||
my $pathHash = substr(basename($storePath), 0, 32);
|
||
|
||
$dst = "$destDir/$pathHash.narinfo";
|
||
if ($force || ! -f $dst) {
|
||
my $tmp = "$destDir/.tmp.$$.$pathHash.narinfo";
|
||
open INFO, ">$tmp" or die;
|
||
print INFO "$info" or die;
|
||
close INFO or die;
|
||
rename($tmp, $dst) or die "cannot rename $tmp to $dst: $!\n";
|
||
}
|
||
|
||
$narFiles{$storePath} = [
|
||
{ url => "$archivesURL/$narName"
|
||
, hash => "sha256:$compressedHash"
|
||
, size => $compressedSize
|
||
, compressionType => $compressionType
|
||
, narHash => "$narHash"
|
||
, narSize => $narSize
|
||
, references => join(" ", @{$refs})
|
||
, deriver => $deriver
|
||
}
|
||
] if $writeManifest;
|
||
}
|
||
|
||
printf STDERR "total compressed size %.2f MiB, %.1f%%\n",
|
||
$totalCompressedSize / (1024 * 1024), $totalCompressedSize / ($totalNarSize || 1) * 100;
|
||
|
||
|
||
# Optionally write a manifest.
|
||
writeManifest($manifestPath // "$destDir/MANIFEST", \%narFiles, \()) if $writeManifest;
|