7bb632b024
This means we no longer need an SSH master connection, since we only execute a single command on the remote host.
130 lines
3.6 KiB
Text
Executable file
130 lines
3.6 KiB
Text
Executable file
#! @perl@ -w @perlFlags@
|
||
|
||
use Nix::SSH;
|
||
use Nix::Config;
|
||
use Nix::Store;
|
||
use Nix::CopyClosure;
|
||
use List::Util qw(sum);
|
||
|
||
|
||
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;
|
||
my $useSubstitutes = 0;
|
||
|
||
|
||
# !!! Copied from nix-pack-closure, should put this in a module.
|
||
my @storePaths = ();
|
||
|
||
while (@ARGV) {
|
||
my $arg = shift @ARGV;
|
||
|
||
if ($arg eq "--help") {
|
||
exec "man nix-copy-closure" or die;
|
||
}
|
||
elsif ($arg eq "--sign") {
|
||
$sign = 1;
|
||
}
|
||
elsif ($arg eq "--gzip") {
|
||
$compressor = "gzip";
|
||
$decompressor = "gzip -d";
|
||
}
|
||
elsif ($arg eq "--bzip2") {
|
||
$compressor = "bzip2";
|
||
$decompressor = "bzip2 -d";
|
||
}
|
||
elsif ($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") {
|
||
$dryRun = 1;
|
||
}
|
||
elsif ($arg eq "--use-substitutes" || $arg eq "-s") {
|
||
$useSubstitutes = 1;
|
||
}
|
||
elsif (!defined $sshHost) {
|
||
$sshHost = $arg;
|
||
}
|
||
else {
|
||
push @storePaths, $arg;
|
||
}
|
||
}
|
||
|
||
die "$0: you did not specify a host name\n" unless defined $sshHost;
|
||
|
||
|
||
if ($toMode) { # Copy TO the remote machine.
|
||
Nix::CopyClosure::copyTo(
|
||
$sshHost, [ @sshOpts ], [ @storePaths ], $compressor, $decompressor,
|
||
$includeOutputs, $dryRun, $sign, $progressViewer, $useSubstitutes);
|
||
}
|
||
|
||
else { # Copy FROM the remote machine.
|
||
|
||
openSSHConnection $sshHost or die "$0: unable to start SSH\n";
|
||
|
||
# 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: $?";
|
||
|
||
my $missingSize = 0;
|
||
if ($progressViewer ne "") {
|
||
$missingSize = sum (split ' ', `set -f; ssh @sshOpts $sshHost nix-store -q --size @missing`) or die;
|
||
}
|
||
|
||
# Export the store paths on the remote machine and import them locally.
|
||
if (scalar @missing > 0) {
|
||
print STDERR "copying ", scalar @missing, " missing paths from ‘$sshHost’...\n";
|
||
unless ($dryRun) {
|
||
if ($useSubstitutes) {
|
||
system "$Nix::Config::binDir/nix-store -r --ignore-unknown @missing";
|
||
}
|
||
$compressor = "| $compressor" if $compressor ne "";
|
||
$decompressor = "$decompressor |" if $decompressor ne "";
|
||
$progressViewer = "$progressViewer -s $missingSize |" if $progressViewer ne "";
|
||
my $extraOpts = $sign ? "--sign" : "";
|
||
system("set -f; ssh $sshHost @sshOpts 'nix-store --export $extraOpts @missing $compressor' | $decompressor $progressViewer $Nix::Config::binDir/nix-store --import > /dev/null") == 0
|
||
or die "copying store paths from remote machine `$sshHost' failed: $?";
|
||
}
|
||
}
|
||
|
||
}
|