lix/scripts/nix-copy-closure.in

117 lines
3 KiB
Text
Executable file
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#! @perl@ -w @perlFlags@
use Nix::SSH;
use Nix::Config;
use Nix::Store;
use Nix::CopyClosure;
if (scalar @ARGV < 1) {
print STDERR <<EOF
Usage: nix-copy-closure [--from | --to] HOSTNAME [--sign] [--gzip] [--bzip2] [--xz] PATHS...
EOF
;
exit 1;
}
# Get the target host.
my $sshHost;
my $sign = 0;
my $compressor = "";
my $decompressor = "";
my $progressViewer = "";
my $toMode = 1;
my $includeOutputs = 0;
my $dryRun = 0;
# !!! Copied from nix-pack-closure, should put this in a module.
my @storePaths = ();
while (@ARGV) {
my $arg = shift @ARGV;
if ($arg eq "--sign") {
$sign = 1;
}
elsif ($arg eq "--gzip") {
$compressor = "gzip";
$decompressor = "gunzip";
}
elsif ($arg eq "--bzip2") {
$compressor = "bzip2";
$decompressor = "bunzip2";
}
elsif ($arg eq "--xz") {
$compressor = "xz";
$decompressor = "xz -d";
}
elsif ($arg eq "--from") {
$toMode = 0;
}
elsif ($arg eq "--to") {
$toMode = 1;
}
elsif ($arg eq "--include-outputs") {
$includeOutputs = 1;
}
elsif ($arg eq "--show-progress") {
$progressViewer = "@pv@";
}
elsif ($arg eq "--dry-run") {
$dryRun = 1;
}
elsif (!defined $sshHost) {
$sshHost = $arg;
}
else {
push @storePaths, $arg;
}
}
openSSHConnection $sshHost or die "$0: unable to start SSH\n";
if ($toMode) { # Copy TO the remote machine.
Nix::CopyClosure::copyTo($sshHost, [ @sshOpts ], [ @storePaths ], $compressor, $decompressor, $includeOutputs, $dryRun, $sign, $progressViewer);
}
else { # Copy FROM the remote machine.
# Query the closure of the given store paths on the remote
# machine. Paths are assumed to be store paths; there is no
# resolution (following of symlinks).
my $extraOpts = $includeOutputs ? "--include-outputs" : "";
my $pid = open(READ,
"set -f; ssh @sshOpts $sshHost nix-store --query --requisites $extraOpts @storePaths|") or die;
while (<READ>) {
chomp;
die "bad: $_" unless /^\//;
push @missing, $_ unless isValidPath($_);
}
close READ or die "nix-store on remote machine `$sshHost' failed: $?";
# Export the store paths on the remote machine and import them locally.
if (scalar @missing > 0) {
print STDERR "copying ", scalar @missing, " missing paths from $sshHost...\n";
$compressor = "| $compressor" if $compressor ne "";
$decompressor = "$decompressor |" if $decompressor ne "";
$progressViewer = "$progressViewer |" if $progressViewer ne "";
unless ($dryRun) {
my $extraOpts = $sign ? "--sign" : "";
system("set -f; ssh $sshHost @sshOpts 'nix-store --export $extraOpts @missing $compressor' | $progressViewer $decompressor $Nix::Config::binDir/nix-store --import > /dev/null") == 0
or die "copying store paths from remote machine `$sshHost' failed: $?";
}
}
}