TT#44095 set isolation level when creating contracts

Change-Id: Ie7944be85ea60626050896988f49917249ccc3f5

lib/NGCP/Panel/Controller/API/Contracts.pm

@@ -131,6 +131,7 @@ sub GET :Allow {
 sub POST :Allow {
     my ($self, $c) = @_;
 
+    $c->model('DB')->set_transaction_isolation('READ COMMITTED');
     my $guard = $c->model('DB')->txn_scope_guard;
     {
         my $schema = $c->model('DB');

lib/NGCP/Panel/Controller/API/Customers.pm

@@ -202,6 +202,7 @@ sub GET :Allow {
 sub POST :Allow {
     my ($self, $c) = @_;
 
+    $c->model('DB')->set_transaction_isolation('READ COMMITTED');
     my $guard = $c->model('DB')->txn_scope_guard;
     {
         my $schema = $c->model('DB');

lib/NGCP/Panel/Controller/Contract.pm

@@ -363,6 +363,7 @@ sub peering_create :Chained('peering_list') :PathPart('create') :Args(0) {
     if($posted && $form->validated) {
         try {
             my $schema = $c->model('DB');
+            $schema->set_transaction_isolation('READ COMMITTED');
             $schema->txn_do(sub {
                 foreach(qw/contact billing_profile/){
                     $form->values->{$_.'_id'} = $form->values->{$_}{id} || undef;
@@ -503,6 +504,7 @@ sub reseller_create :Chained('reseller_list') :PathPart('create') :Args(0) {
     if($posted && $form->validated) {
         try {
             my $schema = $c->model('DB');
+            $schema->set_transaction_isolation('READ COMMITTED');
             $schema->txn_do(sub {
                 foreach(qw/contact billing_profile/){
                     $form->values->{$_.'_id'} = $form->values->{$_}{id} || undef;

lib/NGCP/Panel/Controller/Customer.pm

@@ -202,6 +202,7 @@ sub create :Chained('list_customer') :PathPart('create') :Args(0) {
     if($posted && $form->validated) {
         try {
             my $schema = $c->model('DB');
+            $schema->set_transaction_isolation('READ COMMITTED');
             $schema->txn_do(sub {
                 foreach(qw/contact billing_profile profile_package product subscriber_email_template passreset_email_template invoice_email_template invoice_template/){
                     $form->values->{$_.'_id'} = $form->values->{$_}{id} || undef;