Add proper status page for datasync

or rather, it's a good start..  plenty more could be added

tailbone/templates/datasync/changes/index.mako

@@ -4,7 +4,7 @@
 <%def name="context_menu_items()">
   ${parent.context_menu_items()}
   % if request.has_perm('datasync.list'):
-      <li>${h.link_to("View DataSync Threads", url('datasync'))}</li>
+      <li>${h.link_to("View DataSync Status", url('datasync.status'))}</li>
   % endif
 </%def>
 

tailbone/templates/datasync/configure.mako

@@ -53,29 +53,30 @@
     <p class="block">
       This tool works by modifying settings in the DB.&nbsp; It
       does <span class="is-italic">not</span> modify any config
-      files.&nbsp; If you intend to manage datasync config via files
+      files.&nbsp; If you intend to manage datasync watcher/consumer
-      only then you should
+      config via files only then you should be sure to UNCHECK the
-      <span class="is-italic">not</span> use this tool!
+      "Use these Settings.." checkbox near the top of page.
     </p>
     <p class="block">
-      If you have managed config via files thus far, and want to use
+      If you have managed config via files thus far, and want to
-      this tool anyway/instead, that&apos;s fine - but after saving
+      start using this tool to manage via DB settings instead,
-      the settings via this tool you should probably remove all
+      that&apos;s fine - but after saving the settings via this tool
+      you should probably remove all
       <span class="is-family-code">[rattail.datasync]</span> entries
       from your config file (and restart apps) so as to avoid
       confusion.
     </p>
-    <p class="block">
-      Finally, you should know that this tool will
-      <span class="is-italic">overwrite</span> the entire
-      <span class="is-family-code">rattail.datasync</span> namespace
-      within the DB settings.&nbsp; In other words if you have
-      manually created any ${h.link_to("Raw Settings", url('settings'))}
-      within that namepsace, they will be lost when you save settings
-      with this tool.
-    </p>
   </b-notification>
 
+  <b-field>
+    <b-checkbox name="use_profile_settings"
+                v-model="useProfileSettings"
+                native-value="true"
+                @input="settingsNeedSaved = true">
+      Use these Settings to configure watchers and consumers
+    </b-checkbox>
+  </b-field>
+
   <div class="level">
     <div class="level-left">
       <div class="level-item">
@@ -83,7 +84,8 @@
       </div>
     </div>
     <div class="level-right">
-      <div class="level-item">
+      <div class="level-item"
+           v-show="useProfileSettings">
         <b-button type="is-primary"
                   @click="newProfile()"
                   icon-pack="fas"
@@ -130,7 +132,8 @@
         <b-table-column field="enabled" label="Enabled">
           {{ props.row.enabled ? "Yes" : "No" }}
         </b-table-column>
-        <b-table-column label="Actions">
+        <b-table-column label="Actions"
+                        v-if="useProfileSettings">
           <a href="#"
              class="grid-action"
              @click.prevent="editProfile(props.row)">
@@ -397,7 +400,15 @@
 
   <h3 class="is-size-3">Misc.</h3>
 
-  <b-field grouped>
+  <b-field label="Supervisor Process Name"
+           message="This should be the complete name, including group - e.g. poser:poser_datasync"
+           expanded>
+    <b-input name="supervisor_process_name"
+             v-model="supervisorProcessName"
+             @input="settingsNeedSaved = true">
+    </b-input>
+  </b-field>
+
   <b-field label="Restart Command"
            message="This will run as '${system_user}' system user - please configure sudoers as needed.  Typical command is like:  sudo supervisorctl restart poser:poser_datasync"
            expanded>
@@ -406,7 +417,6 @@
              @input="settingsNeedSaved = true">
     </b-input>
   </b-field>
-  </b-field>
 
 </%def>
 
@@ -417,6 +427,7 @@
     ThisPageData.showConfigFilesNote = false
     ThisPageData.profilesData = ${json.dumps(profiles_data)|n}
     ThisPageData.showDisabledProfiles = false
+    ThisPageData.useProfileSettings = ${json.dumps(use_profile_settings)|n}
 
     ThisPageData.editProfileShowDialog = false
     ThisPageData.editingProfile = null
@@ -441,6 +452,7 @@
     ThisPageData.editingConsumerRunas = null
     ThisPageData.editingConsumerEnabled = true
 
+    ThisPageData.supervisorProcessName = ${json.dumps(supervisor_process_name)|n}
     ThisPageData.restartCommand = ${json.dumps(restart_command)|n}
 
     ThisPage.computed.filteredProfilesData = function() {

tailbone/templates/datasync/index.mako

@@ -1,19 +0,0 @@
-## -*- coding: utf-8; -*-
-<%inherit file="/master/index.mako" />
-
-<%def name="context_menu_items()">
-  ${parent.context_menu_items()}
-  % if request.has_perm('datasync_changes.list'):
-      <li>${h.link_to("View DataSync Changes", url('datasyncchanges'))}</li>
-  % endif
-</%def>
-
-<%def name="render_grid_component()">
-  <b-notification :closable="false">
-    TODO: this page coming soon...
-  </b-notification>
-  ${parent.render_grid_component()}
-</%def>
-
-
-${parent.body()}

tailbone/templates/datasync/status.mako

@@ -0,0 +1,121 @@
+## -*- coding: utf-8; -*-
+<%inherit file="/page.mako" />
+
+<%def name="content_title()"></%def>
+
+<%def name="context_menu_items()">
+  ${parent.context_menu_items()}
+  % if request.has_perm('datasync_changes.list'):
+      <li>${h.link_to("View DataSync Changes", url('datasyncchanges'))}</li>
+  % endif
+</%def>
+
+<%def name="page_content()">
+  <b-field label="Supervisor Status">
+    <div style="display: flex;">
+
+      % if process_info:
+          <pre class="has-background-${'success' if process_info['statename'] == 'RUNNING' else 'danger'}">${process_info['group']}:${process_info['name']}    ${process_info['statename']}    ${process_info['description']}</pre>
+      % else:
+          <pre class="has-background-warning">${supervisor_error}</pre>
+      % endif
+
+      <div style="margin-left: 1rem;">
+        % if request.has_perm('datasync.restart'):
+            ${h.form(url('datasync.restart'), **{'@submit': 'restartProcess'})}
+            ${h.csrf_token(request)}
+            <b-button type="is-primary"
+                      native-type="submit"
+                      icon-pack="fas"
+                      icon-left="redo"
+                      :disabled="restartingProcess">
+              {{ restartingProcess ? "Working, please wait..." : "Restart Process" }}
+            </b-button>
+            ${h.end_form()}
+        % endif
+      </div>
+
+    </div>
+  </b-field>
+
+  <b-field label="Watcher Status">
+    <b-table :data="watchers">
+      <template slot-scope="props">
+        <b-table-column field="key"
+                        label="Watcher">
+           {{ props.row.key }}
+        </b-table-column>
+        <b-table-column field="spec"
+                        label="Spec">
+           {{ props.row.spec }}
+        </b-table-column>
+        <b-table-column field="dbkey"
+                        label="DB Key">
+           {{ props.row.dbkey }}
+        </b-table-column>
+        <b-table-column field="delay"
+                        label="Delay">
+           {{ props.row.delay }} second(s)
+        </b-table-column>
+        <b-table-column field="lastrun"
+                        label="Last Watched">
+           <span v-html="props.row.lastrun"></span>
+        </b-table-column>
+        <b-table-column field="status"
+                        label="Status"
+                        :class="props.row.status == 'okay' ? 'has-background-success' : 'has-background-warning'">
+           {{ props.row.status }}
+        </b-table-column>
+      </template>
+    </b-table>
+  </b-field>
+
+  <b-field label="Consumer Status">
+    <b-table :data="consumers">
+      <template slot-scope="props">
+        <b-table-column field="key"
+                        label="Consumer">
+           {{ props.row.key }}
+        </b-table-column>
+        <b-table-column field="spec"
+                        label="Spec">
+           {{ props.row.spec }}
+        </b-table-column>
+        <b-table-column field="dbkey"
+                        label="DB Key">
+           {{ props.row.dbkey }}
+        </b-table-column>
+        <b-table-column field="delay"
+                        label="Delay">
+           {{ props.row.delay }} second(s)
+        </b-table-column>
+        <b-table-column field="changes"
+                        label="Pending Changes">
+           {{ props.row.changes }}
+        </b-table-column>
+        <b-table-column field="status"
+                        label="Status"
+                        :class="props.row.status == 'okay' ? 'has-background-success' : 'has-background-warning'">
+           {{ props.row.status }}
+        </b-table-column>
+      </template>
+    </b-table>
+  </b-field>
+</%def>
+
+<%def name="modify_this_page_vars()">
+  <script type="text/javascript">
+
+    ThisPageData.restartingProcess = false
+    ThisPageData.watchers = ${json.dumps(watcher_data)|n}
+    ThisPageData.consumers = ${json.dumps(consumer_data)|n}
+
+    ThisPage.methods.restartProcess = function() {
+        this.restartingProcess = true
+    }
+
+  </script>
+</%def>
+
+
+${parent.body()}

tailbone/util.py

@@ -127,6 +127,8 @@ def raw_datetime(config, value, verbose=False, as_date=False):
     if not value:
         return ''
 
+    app = config.get_app()
+
     # Make sure we're dealing with a tz-aware value.  If we're given a naive
     # value, we assume it to be local to the UTC timezone.
     if not value.tzinfo:
@@ -150,10 +152,8 @@ def raw_datetime(config, value, verbose=False, as_date=False):
     else:
         kwargs['c'] = six.text_type(value)
 
-    # avoid humanize error when calculating huge time diff
+    time_diff = app.render_time_ago(time_ago, fallback=None)
-    time_diff = None
+    if time_diff is not None:
-    if abs(time_ago.days) < 100000:
-        time_diff = humanize.naturaltime(time_ago)
 
         # by "verbose" we mean the result text to look like "YYYY-MM-DD (X days ago)"
         if verbose:

tailbone/views/datasync.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2021 Lance Edgar
+#  Copyright © 2010-2022 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -31,11 +31,15 @@ import json
 import subprocess
 import logging
 
+import six
+import sqlalchemy as sa
+
 from rattail.db import model
-from rattail.datasync.config import load_profiles
 from rattail.datasync.util import purge_datasync_settings
+from rattail.util import simple_error
 
 from tailbone.views import MasterView
+from tailbone.util import raw_datetime
 
 
 log = logging.getLogger(__name__)
@@ -49,11 +53,12 @@ class DataSyncThreadView(MasterView):
     index view, with status for each, sort of akin to "dashboard".
     For now it only serves the config view.
     """
-    normalized_model_name = 'datasyncthread'
     model_title = "DataSync Thread"
+    model_title_plural = "DataSync Daemon"
     model_key = 'key'
     route_prefix = 'datasync'
     url_prefix = '/datasync'
+    listable = False
     viewable = False
     creatable = False
     editable = False
@@ -68,24 +73,120 @@ class DataSyncThreadView(MasterView):
         'key',
     ]
 
+    def __init__(self, request, context=None):
+        super(DataSyncThreadView, self).__init__(request, context=context)
+        app = self.get_rattail_app()
+        self.datasync_handler = app.get_datasync_handler()
+
+    def status(self):
+        """
+        View to list/filter/sort the model data.
+
+        If this view receives a non-empty 'partial' parameter in the query
+        string, then the view will return the rendered grid only.  Otherwise
+        returns the full page.
+        """
+        app = self.get_rattail_app()
+        model = self.model
+
+        try:
+            process_info = self.datasync_handler.get_supervisor_process_info()
+            supervisor_error = None
+        except Exception as error:
+            process_info = None
+            supervisor_error = simple_error(error)
+
+        profiles = self.datasync_handler.get_configured_profiles()
+
+        sql = """
+        select source, consumer, count(*) as changes
+        from datasync_change
+        group by source, consumer
+        """
+        result = self.Session.execute(sql)
+        all_changes = {}
+        for row in result:
+            all_changes[(row.source, row.consumer)] = row.changes
+
+        watcher_data = []
+        consumer_data = []
+        now = app.localtime()
+        for key, profile in six.iteritems(profiles):
+            watcher = profile.watcher
+
+            lastrun = self.datasync_handler.get_watcher_lastrun(
+                watcher.key, local=True, session=self.Session())
+
+            status = "okay"
+            if (now - lastrun).total_seconds() >= (watcher.delay * 2):
+                status = "dead watcher"
+
+            watcher_data.append({
+                'key': watcher.key,
+                'spec': profile.watcher_spec,
+                'dbkey': watcher.dbkey,
+                'delay': watcher.delay,
+                'lastrun': raw_datetime(self.rattail_config, lastrun, verbose=True),
+                'status': status,
+            })
+
+            for consumer in profile.consumers:
+                if consumer.watcher is watcher:
+
+                    changes = all_changes.get((watcher.key, consumer.key), 0)
+                    if changes:
+                        oldest = self.Session.query(sa.func.min(model.DataSyncChange.obtained))\
+                                             .filter(model.DataSyncChange.source == watcher.key)\
+                                             .filter(model.DataSyncChange.consumer == consumer.key)\
+                                             .scalar()
+                        oldest = app.localtime(oldest, from_utc=True)
+                        changes = "{} (oldest from {})".format(
+                            changes,
+                            app.render_time_ago(now - oldest))
+
+                    status = "okay"
+                    if changes:
+                        status = "processing changes"
+
+                    consumer_data.append({
+                        'key': '{} -> {}'.format(watcher.key, consumer.key),
+                        'spec': consumer.spec,
+                        'dbkey': consumer.dbkey,
+                        'delay': consumer.delay,
+                        'changes': changes,
+                        'status': status,
+                    })
+
+        watcher_data.sort(key=lambda w: w['key'])
+        consumer_data.sort(key=lambda c: c['key'])
+
+        context = {
+            'index_title': "DataSync Status",
+            'index_url': None,
+            'process_info': process_info,
+            'supervisor_error': supervisor_error,
+            'watcher_data': watcher_data,
+            'consumer_data': consumer_data,
+        }
+        return self.render_to_response('status', context)
+
     def get_data(self, session=None):
         data = []
         return data
 
     def restart(self):
-        cmd = self.rattail_config.getlist('tailbone', 'datasync.restart',
+        try:
-                                          # nb. simulate by default
+            self.datasync_handler.restart_supervisor_process()
-                                          default='/bin/sleep 3')
-        log.debug("attempting datasync restart with command: %s", cmd)
-        result = subprocess.call(cmd)
-        if result == 0:
             self.request.session.flash("DataSync daemon has been restarted.")
-        else:
+
-            self.request.session.flash("DataSync daemon could not be restarted; result was: {}".format(result), 'error')
+        except Exception as error:
-        return self.redirect(self.request.get_referrer(default=self.request.route_url('datasyncchanges')))
+            self.request.session.flash(simple_error(error), 'error')
+
+        return self.redirect(self.request.get_referrer(
+            default=self.request.route_url('datasyncchanges')))
 
     def configure_get_context(self):
-        profiles = load_profiles(self.rattail_config,
+        profiles = self.datasync_handler.get_configured_profiles(
             include_disabled=True,
             ignore_problems=True)
 
@@ -125,7 +226,12 @@ class DataSyncThreadView(MasterView):
         return {
             'profiles': profiles,
             'profiles_data': profiles_data,
-            'restart_command': self.rattail_config.get('tailbone', 'datasync.restart'),
+            'use_profile_settings': self.rattail_config.getbool(
+                'rattail.datasync', 'use_profile_settings'),
+            'supervisor_process_name': self.rattail_config.get(
+                'rattail.datasync', 'supervisor_process_name'),
+            'restart_command': self.rattail_config.get(
+                'tailbone', 'datasync.restart'),
             'system_user': getpass.getuser(),
         }
 
@@ -133,6 +239,12 @@ class DataSyncThreadView(MasterView):
         settings = []
         watch = []
 
+        use_profile_settings = data.get('use_profile_settings') == 'true'
+        settings.append({'name': 'rattail.datasync.use_profile_settings',
+                         'value': 'true' if use_profile_settings else 'false'})
+
+        if use_profile_settings:
+
             for profile in json.loads(data['profiles']):
                 pkey = profile['key']
                 if profile['enabled']:
@@ -186,6 +298,9 @@ class DataSyncThreadView(MasterView):
                 settings.append({'name': 'rattail.datasync.watch',
                                  'value': ', '.join(watch)})
 
+        settings.append({'name': 'rattail.datasync.supervisor_process_name',
+                         'value': data['supervisor_process_name']})
+
         settings.append({'name': 'tailbone.datasync.restart',
                          'value': data['restart_command']})
 
@@ -204,6 +319,25 @@ class DataSyncThreadView(MasterView):
         permission_prefix = cls.get_permission_prefix()
         route_prefix = cls.get_route_prefix()
         url_prefix = cls.get_url_prefix()
+        index_title = cls.get_index_title()
+
+        # view status
+        config.add_tailbone_permission(permission_prefix,
+                                       '{}.status'.format(permission_prefix),
+                                       "View status for DataSync daemon")
+        # nb. simple 'datasync' route points to 'datasync.status' for now..
+        config.add_route(route_prefix,
+                         '{}/status/'.format(url_prefix))
+        config.add_route('{}.status'.format(route_prefix),
+                         '{}/status/'.format(url_prefix))
+        config.add_view(cls, attr='status',
+                        route_name=route_prefix,
+                        permission='{}.status'.format(permission_prefix))
+        config.add_view(cls, attr='status',
+                        route_name='{}.status'.format(route_prefix),
+                        permission='{}.status'.format(permission_prefix))
+        config.add_tailbone_index_page(route_prefix, index_title,
+                                       '{}.status'.format(permission_prefix))
 
         # restart
         config.add_tailbone_permission(permission_prefix,