151 lines
4.3 KiB
Perl
Executable file
151 lines
4.3 KiB
Perl
Executable file
#! /usr/bin/env nix-shell
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#! nix-shell -i perl -p perl perlPackages.NetAmazonS3 nixUnstable
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# This command uploads tarballs to tarballs.nixos.org, the
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# content-addressed cache used by fetchurl as a fallback for when
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# upstream tarballs disappear or change. Usage:
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#
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# 1) To upload a single file:
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#
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# $ copy-tarballs.pl --file /path/to/tarball.tar.gz
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#
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# 2) To upload all files obtained via calls to fetchurl in a Nix derivation:
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#
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# $ copy-tarballs.pl --expr '(import <nixpkgs> {}).hello'
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use strict;
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use warnings;
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use File::Basename;
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use File::Path;
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use JSON;
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use Net::Amazon::S3;
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use Nix::Store;
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# S3 setup.
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my $aws_access_key_id = $ENV{'AWS_ACCESS_KEY_ID'} or die;
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my $aws_secret_access_key = $ENV{'AWS_SECRET_ACCESS_KEY'} or die;
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my $s3 = Net::Amazon::S3->new(
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{ aws_access_key_id => $aws_access_key_id,
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aws_secret_access_key => $aws_secret_access_key,
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retry => 1,
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});
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my $bucket = $s3->bucket("nixpkgs-tarballs") or die;
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sub alreadyMirrored {
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my ($algo, $hash) = @_;
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return defined $bucket->get_key("$algo/$hash");
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}
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sub uploadFile {
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my ($fn, $name) = @_;
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my $md5_16 = hashFile("md5", 0, $fn) or die;
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my $sha1_16 = hashFile("sha1", 0, $fn) or die;
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my $sha256_32 = hashFile("sha256", 1, $fn) or die;
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my $sha256_16 = hashFile("sha256", 0, $fn) or die;
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my $sha512_32 = hashFile("sha512", 1, $fn) or die;
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my $sha512_16 = hashFile("sha512", 0, $fn) or die;
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my $mainKey = "sha512/$sha512_16";
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# Upload the file as sha512/<hash-in-base-16>.
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print STDERR "uploading $fn to $mainKey...\n";
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$bucket->add_key_filename($mainKey, $fn, { 'x-amz-meta-original-name' => $name })
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or die "failed to upload $fn to $mainKey\n";
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# Create redirects from the other hash types.
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sub redirect {
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my ($name, $dest) = @_;
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#print STDERR "linking $name to $dest...\n";
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$bucket->add_key($name, "", { 'x-amz-website-redirect-location' => "/" . $dest })
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or die "failed to create redirect from $name to $dest\n";
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}
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redirect "md5/$md5_16", $mainKey;
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redirect "sha1/$sha1_16", $mainKey;
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redirect "sha256/$sha256_32", $mainKey;
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redirect "sha256/$sha256_16", $mainKey;
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redirect "sha512/$sha512_32", $mainKey;
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}
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my $op = shift @ARGV;
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if ($op eq "--file") {
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my $res = 0;
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foreach my $fn (@ARGV) {
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eval {
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if (alreadyMirrored("sha512", hashFile("sha512", 0, $fn))) {
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print STDERR "$fn is already mirrored\n";
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} else {
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uploadFile($fn, basename $fn);
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}
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};
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if ($@) {
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warn "$@\n";
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$res = 1;
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}
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}
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exit $res;
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}
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elsif ($op eq "--expr") {
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# Evaluate find-tarballs.nix.
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my $expr = $ARGV[0] // die "$0: --expr requires a Nix expression\n";
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my $pid = open(JSON, "-|", "nix-instantiate", "--eval-only", "--json", "--strict",
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"<nixpkgs/maintainers/scripts/find-tarballs.nix>",
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"--arg", "expr", $expr);
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my $stdout = <JSON>;
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waitpid($pid, 0);
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die "$0: evaluation failed\n" if $?;
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close JSON;
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my $fetches = decode_json($stdout);
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print STDERR "evaluation returned ", scalar(@{$fetches}), " tarballs\n";
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# Check every fetchurl call discovered by find-tarballs.nix.
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my $mirrored = 0;
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my $have = 0;
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foreach my $fetch (@{$fetches}) {
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my $url = $fetch->{url};
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my $algo = $fetch->{type};
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my $hash = $fetch->{hash};
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if ($url !~ /^http:/ && $url !~ /^https:/ && $url !~ /^ftp:/ && $url !~ /^mirror:/) {
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print STDERR "skipping $url (unsupported scheme)\n";
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next;
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}
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if (alreadyMirrored($algo, $hash)) {
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$have++;
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next;
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}
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print STDERR "mirroring $url...\n";
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next if $ENV{DRY_RUN};
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# Download the file using nix-prefetch-url.
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$ENV{QUIET} = 1;
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$ENV{PRINT_PATH} = 1;
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my $fh;
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my $pid = open($fh, "-|", "nix-prefetch-url", "--type", $algo, $url, $hash) or die;
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waitpid($pid, 0) or die;
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if ($? != 0) {
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print STDERR "failed to fetch $url: $?\n";
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next;
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}
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<$fh>; my $storePath = <$fh>; chomp $storePath;
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uploadFile($storePath, $url);
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$mirrored++;
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}
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print STDERR "mirrored $mirrored files, already have $have files\n";
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}
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else {
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die "Syntax: $0 --file FILENAMES... | --expr EXPR\n";
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}
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