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* nix-copy-closure: compute the closure in one call to nix-store,

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which is much faster.
This commit is contained in:
Eelco Dolstra 2009-03-28 21:10:29 +00:00
parent 6e946c8e72
commit 47706e3924
2 changed files with 10 additions and 26 deletions
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2
scripts/build-remote.pl.in
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@ -175,7 +175,7 @@ print "copying inputs...\n";
my $maybeSign = ""; my $maybeSign = "";
$maybeSign = "--sign" if -e "/nix/etc/nix/signing-key.sec"; $maybeSign = "--sign" if -e "/nix/etc/nix/signing-key.sec";
system("NIX_SSHOPTS=\"$sshOpts\" nix-copy-closure --gzip $hostName $maybeSign $drvPath $inputs") == 0 system("NIX_SSHOPTS=\"$sshOpts\" @bindir@/nix-copy-closure --gzip $hostName $maybeSign $drvPath $inputs") == 0
or die "cannot copy inputs to $hostName: $?"; or die "cannot copy inputs to $hostName: $?";
print "building...\n"; print "building...\n";

34
scripts/nix-copy-closure.in
View file

@ -55,30 +55,18 @@ while (@ARGV) {
if ($toMode) { # Copy TO the remote machine. if ($toMode) { # Copy TO the remote machine.
my @allStorePaths; my @allStorePaths;
my %storePathsSeen;
foreach my $storePath (@storePaths) { # Get the closure of this path.
# $arg might be a symlink to the store, so resolve it. my $pid = open(READ, "$binDir/nix-store --query --requisites @storePaths|") or die;
my $storePath2 = (`$binDir/nix-store --query --resolve '$storePath'`
or die "cannot resolve `$storePath'");
chomp $storePath2;
# Get the closure of this path. while (<READ>) {
my $pid = open(READ, chomp;
"$binDir/nix-store --query --requisites '$storePath2'|") or die; die "bad: $_" unless /^\//;
push @allStorePaths, $_;
while (<READ>) {
chomp;
die "bad: $_" unless /^\//;
if (!defined $storePathsSeen{$_}) {
push @allStorePaths, $_;
$storePathsSeen{$_} = 1;
}
}
close READ or die "nix-store failed: $?";
} }
close READ or die "nix-store failed: $?";
# Ask the remote host which paths are invalid. # Ask the remote host which paths are invalid.
open(READ, "ssh @sshOpts $sshHost nix-store --check-validity --print-invalid @allStorePaths|"); open(READ, "ssh @sshOpts $sshHost nix-store --check-validity --print-invalid @allStorePaths|");
@ -111,15 +99,11 @@ else { # Copy FROM the remote machine.
"ssh @sshOpts $sshHost nix-store --query --requisites @storePaths|") or die; "ssh @sshOpts $sshHost nix-store --query --requisites @storePaths|") or die;
my @allStorePaths; my @allStorePaths;
my %storePathsSeen;
while (<READ>) { while (<READ>) {
chomp; chomp;
die "bad: $_" unless /^\//; die "bad: $_" unless /^\//;
if (!defined $storePathsSeen{$_}) { push @allStorePaths, $_;
push @allStorePaths, $_;
$storePathsSeen{$_} = 1;
}
} }
close READ or die "nix-store on remote machine `$sshHost' failed: $?"; close READ or die "nix-store on remote machine `$sshHost' failed: $?";