[erp5_web_monitoring] Fix concurence problem on destroy OPML while sync is...

[erp5_web_monitoring] Fix concurence problem on destroy OPML while sync is running or start just after

If Sync start in background and destroy OPML is launched, some data can be removed while sync is writing. So we prevent sync to run if destroy OPML is running and also, we refuse to destroy OPML if sync is running.

bt5/erp5_web_monitoring/PathTemplateItem/web_page_module/gadget_erp5_page_settings_configurator_html.html

@@ -5,6 +5,8 @@
     <meta name="viewport" content="width=device-width" />
     <title>ERP5 Page Monitoring Settings Configurator</title>
 
+    <link href="gadget_officejs_monitoring_custom.css" rel="stylesheet" type="text/css"/>
+
     <!-- renderjs -->
     <script src="rsvp.js" type="text/javascript"></script>
     <script src="renderjs.js" type="text/javascript"></script>

bt5/erp5_web_monitoring/PathTemplateItem/web_page_module/gadget_erp5_page_settings_configurator_html.xml

@@ -242,7 +242,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>963.8904.14589.19234</string> </value>
+                <value> <string>963.27666.8050.30907</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -260,7 +260,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1509441500.96</float>
+                        <float>1515055044.86</float>
                         <string>UTC</string>
                       </tuple>
                     </state>

bt5/erp5_web_monitoring/PathTemplateItem/web_page_module/gadget_erp5_page_settings_configurator_js.js

@@ -60,6 +60,8 @@
 
     .onEvent('click', function (event) {
       var gadget = this,
+        sync_start_time,
+        success = true,
         element = gadget.element.querySelector("#destroyOPML");
 
       function removeAllOPML(result) {
@@ -96,23 +98,57 @@
 
         return gadget.notifySubmitting()
           .push(function () {
+            return gadget.getSetting('sync_start_time');
+          })
+          .push(function (start_time) {
+            sync_start_time = start_time;
+            return gadget.getSetting('latest_sync_time');
+          })
+          .push(function (finish_time) {
+            if (finish_time - sync_start_time < 0) {
+              // sync is running, cannot remove OPML now
+              success = false;
+              return RSVP.all([
+                gadget.notifySubmitted({
+                  message: 'Cannot destroy now, please wait until background ' +
+                    'sync is finished',
+                  status: 'error'
+                })
+              ]);
+            }
             element.setAttribute("disabled", "disabled");
             return gadget.jio_allDocs({
               query: 'portal_type: "opml"',
               select_list: ['title']
-            });
             })
               .push(function (result) {
-            return removeAllOPML(result);
+                return RSVP.all([
+                  gadget.setSetting('sync_lock', true),
+                  removeAllOPML(result)
+                ]);
               })
               .push(function () {
                 return RSVP.all([
-              gadget.notifySubmitted({message: 'All OPML removed', status: 'success'})
+                  gadget.setSetting('sync_lock', false),
+                  gadget.notifySubmitted({
+                    message: 'All OPML removed',
+                    status: 'success'
+                  })
                 ]);
+              }, function () {
+                success = false;
+                return gadget.setSetting('sync_lock', false);
+              });
           })
           .push(function () {
-            element.textContent = element.textContent.slice(10, element.textContent.length);
+            element.textContent = element.textContent.slice(
+              10,
+              element.textContent.length
+            );
+            element.setAttribute('rel', '');
+            if (success) {
               return gadget.redirect({"command": "reload"});
+            }
           });
       }
     }, false, false)

bt5/erp5_web_monitoring/PathTemplateItem/web_page_module/gadget_erp5_page_settings_configurator_js.xml

@@ -238,7 +238,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>963.21245.1149.59784</string> </value>
+                <value> <string>964.38401.39195.47086</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -256,7 +256,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1510216637.34</float>
+                        <float>1515059069.3</float>
                         <string>UTC</string>
                       </tuple>
                     </state>

bt5/erp5_web_monitoring/PathTemplateItem/web_page_module/gadget_officejs_monitoring_sync_js.js

@@ -150,15 +150,28 @@
               // There was another recent sync don't start a new sync before the time_interval!
               return;
             }
+            return gadget.getSetting('sync_lock')
+              .push(function (sync_lock) {
+                if (!sync_lock) {
+                  gadget.props.sync_locked = false;
                   return syncAllStorageWithCheck();
+                }
+                gadget.props.sync_locked = true;
+                return gadget.notifySubmitted({
+                  message: "Auto sync is currently locked by another task " +
+                    "and will be restarted later...",
+                  status: "error"
+                });
+              });
           })
           .push(function () {
             return gadget.getSetting('sync_data_interval');
           })
           .push(function (timer_interval) {
-            if (gadget.props.offline === true) {
-              // Offline mode detected, next check will be in 3 minutes
-              timer_interval = 180000;
+            if (gadget.props.offline === true ||
+                gadget.props.sync_locked === true) {
+              // Offline mode detected or sync locked. Next run in 1 minute
+              timer_interval = 60000;
             } else if (timer_interval === undefined) {
               timer_interval = gadget.props.default_sync_interval;
             }

bt5/erp5_web_monitoring/PathTemplateItem/web_page_module/gadget_officejs_monitoring_sync_js.xml

@@ -242,7 +242,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>963.29142.15969.45158</string> </value>
+                <value> <string>964.38426.36779.39065</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -260,7 +260,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1510669949.87</float>
+                        <float>1515058880.82</float>
                         <string>UTC</string>
                       </tuple>
                     </state>