use /srv/angular-mojolicious as base dir

[angular-mojolicious.git] / couchdb-trigger.pl

diff --git a/couchdb-trigger.pl b/couchdb-trigger.pl
index 5f02e0f..873beee 100755 (executable)
--- a/couchdb-trigger.pl
+++ b/couchdb-trigger.pl
@@ -1,6 +1,14 @@
 #!/usr/bin/perl
 
+# back-end trigger server for CouchDB monitoring changes feed:
+#
 # http://wiki.apache.org/couchdb/HTTP_database_API#Changes
+#
+# implements state machine using document which you cen put with:
+#
+# curl -X PUT http://localhost:5984/monitor/df -d '{"trigger":{"command":"df -P","format":"table"}}'
+#
+# DEFAULT TRIGGER EXECUTE SHELL COMMANDS. IT IS NOT SECURE IF YOUR COUCHDB ISN'T SECURE!
 
 use warnings;
 use strict;
@@ -9,8 +17,17 @@ use lib 'common/mojo/lib';
 
 use Mojo::Client;
 use Mojo::JSON;
+use Time::HiRes qw(time);
+use Data::Dump qw(dump);
+
+my ( $url, $trigger_path ) = @ARGV;
+
+$url          ||= 'http://localhost:5984/monitor';
+$trigger_path ||= 'trigger/shell.pm' ;
+
+sub commit { warn "# commit ignored\n"; }
+require $trigger_path if -e $trigger_path;
 
-my $url = 'http://localhost:5984/monitor';
 my $seq = 0;
 
 my $client = Mojo::Client->new;
@@ -54,11 +71,11 @@ while( ! $error ) {
 
                                debug 'change' => $change;
 
-                               if ( my $trigger = $change->{doc}->{trigger} ) {
-                                       if ( exists $trigger->{active} ) {
+                               if ( filter($change) ) {
+                                       if ( exists $change->{doc}->{trigger}->{active} ) {
                                                debug 'trigger.active',  $change->{doc}->{trigger}->{active};
                                        } else {
-                                               $trigger->{active} = [ time() ];
+                                               $change->{doc}->{trigger}->{active} = [ time() ];
 
                                                debug 'TRIGGER start PUT ', $change->{doc};
                                                $client->put( "$url/$id" => $json->encode( $change->{doc} ) => sub {
@@ -72,11 +89,11 @@ while( ! $error ) {
                                                        } else {
                                                                my $res = $tx->res->json;
                                                                $change->{doc}->{_rev} = $res->{rev};
-                                                               debug "TRIGGER execute ", $change->{doc};
 
-                                                               # FIXME trigger logic?
+                                                               debug "TRIGGER execute ", $change->{doc};
+                                                               trigger( $change );
 
-                                                               push @{ $trigger->{active} }, time(); # timestamp step
+                                                               push @{ $change->{doc}->{trigger}->{active} }, time(), 0; # last timestamp
 
                                                                $client->put( "$url/$id" => $json->encode( $change->{doc} ) => sub {
                                                                        my ($client,$tx) = @_;
@@ -98,6 +115,8 @@ while( ! $error ) {
 
                }
 
+               commit;
+
        });
        $client->start($tx);