From a12ebe7e3a222e78af976ffc3e1d6c80bd9d94a3 Mon Sep 17 00:00:00 2001
From: Mike Rylander <mrylander@gmail.com>
Date: Fri, 25 Jul 2014 15:15:05 -0400
Subject: [PATCH] LP#1339190 Save state in the new world

* and look in the right place for {ils}
* do not exit on error, record it
* pull just what we need, merge it later
* do not freeze complex objects, and use FreezeThaw instead of Storable
* And Only pass simple data through the fifo, pre-store the rest

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Bill Erickson <berick@esilibrary.com>
---
 SIPServer.pm | 38 +++++++++++++++++++++++---------------
 1 file changed, 23 insertions(+), 15 deletions(-)

diff --git a/SIPServer.pm b/SIPServer.pm
index a3595a5..46f8996 100644
--- a/SIPServer.pm
+++ b/SIPServer.pm
@@ -42,7 +42,7 @@ use Sip::Checksum qw(checksum verify_cksum);
 use Sip::MsgType;
 
 use File::Queue;
-use Storable qw(freeze thaw);
+use FreezeThaw qw(freeze thaw);
 
 my $mp_fifo = File::Queue->new( File => "/tmp/SIPServer.mulitplex-fifo.$$" );
 END { $mp_fifo->delete };
@@ -192,11 +192,16 @@ sub REAPER {
 my %active_connections;
 sub PERMAFROST {
     while (my $login = $mp_fifo->deq) {
-        $login = thaw($login);
+        ($login) = thaw($login);
+
+        my $c = $$login{id};
         if ($$login{success}) {
-            $active_connections{$$login{id}} = $login;
+            for my $p (keys %{ $$login{net_server_parts} }) {
+                $active_connections{$c}{net_server}{$p} = 
+                    $$login{net_server_parts}{$p};
+            }
         } else {
-            delete $active_connections{$$login{id}};
+            delete $active_connections{$c};
         }
     }
 }
@@ -261,7 +266,7 @@ sub mux_input {
         }
 
         # We stick this here, assuming success. Cleanup comes later via PERMAFROST().
-        $active_connections{$conn_id} = { id => $conn_id, transport => $transport };
+        $active_connections{$conn_id} = { id => $conn_id, transport => $transport, net_server => $self };
  
         my $pid = fork();
         if (!defined($pid) or $pid < 0) {
@@ -277,21 +282,24 @@ sub mux_input {
             if ($@) {
                 syslog('LOG_ERR', "ILS login error: $@");
                 $success = 0;
-                exit(0);
-            }
-    
-            # Evergreen, at least, needs a chance to clean up before forking for other requests
-            $self->{ils}->disconnect() if (UNIVERSAL::can($self->{ils},'disconnect'));
+            } else {
+                # Grab any state data for later
+                $self->{state} = $self->{ils}->state() if (UNIVERSAL::can($self->{ils},'state'));
+
+                # Evergreen, at least, needs a chance to clean up before forking for other requests
+                $self->{ils}->disconnect() if (UNIVERSAL::can($self->{ils},'disconnect'));
 
-            # Stash the ILS module somewhere handy for later
-            $self->{ils} = ref($self->{ils});
+                # Stash the ILS module somewhere handy for later
+                $self->{ils} = ref($self->{ils});
+            }
 
             $mp_fifo->enq(
                 freeze({
                     id => $conn_id,
                     success => $success,
-                    transport  => $transport,
-                    net_server => bless({%$self}, ref($self))
+                    net_server_parts => {
+                        map { ($_ => $$self{$_}) } qw/ils state institution account/
+                    }
                 })
             );
     
@@ -312,7 +320,7 @@ sub mux_input {
     if ($pid == 0) { # in kid
 
         # build the connection we deleted after logging in
-        $self->{ils} = $active_connections{$conn_id}->{ils}->new($self->{institution}, $self->{account}, $active_connections{$conn_id}->{state});
+        $self->{ils} = $self->{ils}->new($self->{institution}, $self->{account}, $self->{state});
 
         if (!$self->{ils}) {
             syslog('LOG_ERR', "Unable to build ILS module in mux child");
-- 
2.11.0