Add an optional compilation cache

diff --git a/lib/Gruntmaster/Daemon/Format.pm b/lib/Gruntmaster/Daemon/Format.pm
index a492e63c80ecc9bd06b8c389495dd05325b6cdb7..cd0e47d495df05296a9e32c20534544d728b67b6 100644 (file)
--- a/lib/Gruntmaster/Daemon/Format.pm
+++ b/lib/Gruntmaster/Daemon/Format.pm
@@ -6,8 +6,10 @@ use warnings;
 use parent qw/Exporter/;
 no if $] > 5.017011, warnings => 'experimental::smartmatch';
 
+use Digest::SHA qw/sha256_hex/;
 use Expect::Simple;
 use File::Basename qw/fileparse/;
+use File::Copy qw/cp/;
 use File::Slurp qw/read_file write_file/;
 use List::MoreUtils qw/natatime/;
 use Log::Log4perl qw/get_logger/;
@@ -115,7 +117,19 @@ sub prepare_files{
 
                $file->{run} = mkrun($format);
                write_file $name, $content;
-               prepare $name, $format;
+               if ($ENV{GRUNTMASTER_CCACHE}) {
+                       my $key = lc sha256_hex($content) . '-' . $format;
+                       my $cachefn = "$ENV{GRUNTMASTER_CCACHE}/$key";
+                       my $exefn = fileparse $name, qr/[.][^.]*/s;
+                       if (cp $cachefn, $exefn) {
+                               get_logger->trace("File $name found in compilation cache")
+                       } else {
+                               prepare $name, $format;
+                               cp $exefn, $cachefn
+                       }
+               } else {
+                       prepare $name, $format
+               }
        }
 }