124 lines
3.2 KiB
Text
Executable file
124 lines
3.2 KiB
Text
Executable file
#! @perl@ -w @perlFlags@
|
|
|
|
use Nix::SSH;
|
|
use Nix::Config;
|
|
use Nix::Store;
|
|
|
|
|
|
if (scalar @ARGV < 1) {
|
|
print STDERR <<EOF
|
|
Usage: nix-copy-closure [--from | --to] HOSTNAME [--sign] [--gzip] PATHS...
|
|
EOF
|
|
;
|
|
exit 1;
|
|
}
|
|
|
|
|
|
# Get the target host.
|
|
my $sshHost;
|
|
|
|
my $sign = 0;
|
|
|
|
my $compressor = "";
|
|
my $decompressor = "";
|
|
|
|
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 "--from") {
|
|
$toMode = 0;
|
|
}
|
|
elsif ($arg eq "--to") {
|
|
$toMode = 1;
|
|
}
|
|
elsif ($arg eq "--include-outputs") {
|
|
$includeOutputs = 1;
|
|
}
|
|
elsif ($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.
|
|
|
|
# Get the closure of this path.
|
|
my @allStorePaths = reverse(topoSortPaths(computeFSClosure(0, $includeOutputs, map { followLinksToStorePath $_ } @storePaths)));
|
|
|
|
# Ask the remote host which paths are invalid.
|
|
open(READ, "set -f; ssh $sshHost @sshOpts nix-store --check-validity --print-invalid @allStorePaths|");
|
|
my @missing = ();
|
|
while (<READ>) {
|
|
chomp;
|
|
push @missing, $_;
|
|
}
|
|
close READ or die;
|
|
|
|
# Export the store paths and import them on the remote machine.
|
|
if (scalar @missing > 0) {
|
|
print STDERR "copying these missing paths:\n";
|
|
print STDERR " $_\n" foreach @missing;
|
|
unless ($dryRun) {
|
|
my $extraOpts = $sign ? "--sign" : "";
|
|
system("set -f; nix-store --export $extraOpts @missing $compressor | ssh $sshHost @sshOpts '$decompressor nix-store --import'") == 0
|
|
or die "copying store paths to remote machine `$sshHost' failed: $?";
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
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 on locally.
|
|
if (scalar @missing > 0) {
|
|
print STDERR "copying these missing paths:\n";
|
|
print STDERR " $_\n" foreach @missing;
|
|
unless ($dryRun) {
|
|
my $extraOpts = $sign ? "--sign" : "";
|
|
system("set -f; ssh $sshHost @sshOpts 'nix-store --export $extraOpts @missing $compressor' | $decompressor $Nix::Config::binDir/nix-store --import") == 0
|
|
or die "copying store paths from remote machine `$sshHost' failed: $?";
|
|
}
|
|
}
|
|
|
|
}
|