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* Support multiple system types per remote machine, e.g. a machine

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list like

    root@example.org x86_64-linux /root/.ssh/id_buildfarm 1
    root@example.org i686-darwin  /root/.ssh/id_buildfarm 1

  This is possible when the Nix installation on example.org itself has
  remote builds enabled.
This commit is contained in:
Eelco Dolstra 2008-12-04 12:20:06 +00:00
parent 63b8f09d8d
commit 9fd9c4c635
1 changed files with 24 additions and 24 deletions
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48
scripts/build-remote.pl.in
View file

@ -52,10 +52,7 @@ decline if $amWilling && ($localSystem eq $neededSystem);
# Otherwise find a willing remote machine. # Otherwise find a willing remote machine.
my %machines; my @machines;
my %systemTypes;
my %sshKeys;
my %maxJobs;
my %curJobs; my %curJobs;
@ -67,10 +64,12 @@ while (<CONF>) {
s/\#.*$//g; s/\#.*$//g;
next if /^\s*$/; next if /^\s*$/;
/^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\d+)\s*$/ or die; /^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\d+)\s*$/ or die;
$machines{$1} = ""; push @machines,
$systemTypes{$1} = $2; { hostName => $1
$sshKeys{$1} = $3; , systemType => $2
$maxJobs{$1} = $4; , sshKeys => $3
, maxJobs => $4
};
} }
close CONF; close CONF;
@ -85,15 +84,15 @@ flock(MAINLOCK, LOCK_EX) or die;
# Find a suitable system. # Find a suitable system.
my $rightType = 0; my $rightType = 0;
my $machine; my $machine;
LOOP: foreach my $cur (keys %machines) { LOOP: foreach my $cur (@machines) {
if ($neededSystem eq $systemTypes{$cur}) { if ($neededSystem eq $cur->{systemType}) {
$rightType = 1; $rightType = 1;
# We have a machine of the right type. Try to get a lock on # We have a machine of the right type. Try to get a lock on
# one of the machine's lock files. # one of the machine's lock files.
my $slot = 0; my $slot = 0;
while ($slot < $maxJobs{$cur}) { while ($slot < $cur->{maxJobs}) {
my $slotLock = "$currentLoad/$cur-$slot"; my $slotLock = "$currentLoad/" . $cur->{systemType} . "-" . $cur->{hostName} . "-$slot";
open SLOTLOCK, ">>$slotLock" or die; open SLOTLOCK, ">>$slotLock" or die;
if (flock(SLOTLOCK, LOCK_EX | LOCK_NB)) { if (flock(SLOTLOCK, LOCK_EX | LOCK_NB)) {
$machine = $cur; $machine = $cur;
@ -132,7 +131,8 @@ if ($x ne "okay") {
# Do the actual job. # Do the actual job.
print "BUILDING REMOTE: $drvPath on $machine\n"; my $hostName = $machine->{hostName};
print "BUILDING REMOTE: $drvPath on $hostName\n";
# Make sure that we don't get any SSH passphrase or host key popups - # Make sure that we don't get any SSH passphrase or host key popups -
# if there is any problem it should fail, not do something # if there is any problem it should fail, not do something
@ -141,10 +141,10 @@ $ENV{"DISPLAY"} = "";
$ENV{"SSH_PASSWORD_FILE="} = ""; $ENV{"SSH_PASSWORD_FILE="} = "";
$ENV{"SSH_ASKPASS="} = ""; $ENV{"SSH_ASKPASS="} = "";
my $sshOpts = "-i $sshKeys{$machine} -x"; my $sshOpts = "-i " . $machine->{sshKeys} . " -x";
# Hack to support Cygwin: if we login without a password, we don't # Hack to support Cygwin: if we login without a password, we don't
# have exactly the same right as when we do. This causes the # have exactly the same rights as when we do. This causes the
# Microsoft C compiler to fail with certain flags: # Microsoft C compiler to fail with certain flags:
# #
# http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=99676 # http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=99676
@ -154,8 +154,8 @@ my $sshOpts = "-i $sshKeys{$machine} -x";
# password. (It only calls this command when there is no controlling # password. (It only calls this command when there is no controlling
# terminal, but Nix ensures that is is the case. When doing this # terminal, but Nix ensures that is is the case. When doing this
# manually, use setsid(1).) # manually, use setsid(1).)
if ($sshKeys{$machine} =~ /^password:/) { if ($machine->{sshKeys} =~ /^password:/) {
my $passwordFile = $sshKeys{$machine}; my $passwordFile = $machine->{sshKeys};
$passwordFile =~ s/^password://; $passwordFile =~ s/^password://;
$sshOpts = "ssh -x"; $sshOpts = "ssh -x";
$ENV{"SSH_PASSWORD_FILE"} = $passwordFile; $ENV{"SSH_PASSWORD_FILE"} = $passwordFile;
@ -178,22 +178,22 @@ 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 $machine $maybeSign $drvPath $inputs") == 0 system("NIX_SSHOPTS=\"$sshOpts\" nix-copy-closure $hostName $maybeSign $drvPath $inputs") == 0
or die "cannot copy inputs to $machine: $?"; or die "cannot copy inputs to $hostName: $?";
print "BUILDING...\n"; print "BUILDING...\n";
system("ssh $sshOpts $machine 'nix-store -rvvK $drvPath'") == 0 system("ssh $sshOpts $hostName 'nix-store -rvvK $drvPath'") == 0
or die "remote build on $machine failed: $?"; or die "remote build on $hostName failed: $?";
print "REMOTE BUILD DONE: $drvPath on $machine\n"; print "REMOTE BUILD DONE: $drvPath on $hostName\n";
foreach my $output (split '\n', $outputs) { foreach my $output (split '\n', $outputs) {
my $maybeSignRemote = ""; my $maybeSignRemote = "";
$maybeSignRemote = "--sign" if $UID != 0; $maybeSignRemote = "--sign" if $UID != 0;
system("ssh $sshOpts $machine 'nix-store --export $maybeSignRemote $output' > dump") == 0 system("ssh $sshOpts $hostName 'nix-store --export $maybeSignRemote $output' > dump") == 0
or die "cannot copy $output from $machine: $?"; or die "cannot copy $output from $hostName: $?";
# This doesn't work yet, since the caller has a lock on the output # This doesn't work yet, since the caller has a lock on the output
# path. We should move towards lock-free invocation of build # path. We should move towards lock-free invocation of build