[PATCH manager v4] ui: ha: add disarm/re-arm button

[Dominik Rusovac <d.rusovac@proxmox.com>]

The button to disarm HA in either of the resource modes ('freeze' or
'ignore') is disabled as long as HA is disarmed. Analogously, the button
to arm HA is disabled as long as HA is not disarmed.

For feedback, after clicking either of the buttons, icon spins as long as
(dis)arming process has not changed the armed-state of HA.

The icons ('unlink' and 'link') are chosen to emphasize that "Disarm HA"
and "Arm HA" are complements. There may be more suitable pairs of icons
though.

Signed-off-by: Dominik Rusovac <d.rusovac@proxmox.com>
---

 changes since v3:
  * add more details to confirm prompt
  * drop masking whole resources
  * add spinning icon at the end of the "fencing" status

 On a side note, I did not add the spinning icon at the very end of the
 "fencing" status row, because I found it easier to spot at the end of
 the status

 www/manager6/ha/Status.js     | 124 ++++++++++++++++++++++++++++++++++
 www/manager6/ha/StatusView.js |  23 +++++++
 2 files changed, 147 insertions(+)

diff --git a/www/manager6/ha/Status.js b/www/manager6/ha/Status.js
index b0b0feb9..86df8b31 100644
--- a/www/manager6/ha/Status.js
+++ b/www/manager6/ha/Status.js
@@ -8,6 +8,113 @@ Ext.define('PVE.ha.Status', {
         align: 'stretch',
     },
 
+    viewModel: {
+        data: {
+            haDisarmed: false,
+        },
+    },
+
+    controller: {
+        xclass: 'Ext.app.ViewController',
+
+        handleDisarmButton: function (menuItem) {
+            let me = this;
+            let view = me.getView();
+
+            let warn = Ext.String.format(
+                gettext("Are you sure you want to disarm HA with resource mode '{0}'?"),
+                menuItem.text,
+            );
+
+            let details =
+                'While disarmed, HA does not protect your services. Failures during this period are not automatically recovered.';
+
+            Ext.Msg.confirm(
+                gettext('Confirm'),
+                warn + '<br><br>' + gettext(menuItem.details) + '<br><br>' + gettext(details),
+                function (btn) {
+                    if (btn !== 'yes') {
+                        return;
+                    }
+                    Proxmox.Utils.API2Request({
+                        url: '/cluster/ha/status/disarm-ha',
+                        params: { 'resource-mode': menuItem.mode },
+                        method: 'POST',
+                        success: function () {
+                            let sv = view.query('pveHAStatusView')[0];
+                            sv.isDisarmedPendingState = true;
+                            sv.setPending(true);
+                        },
+                        failure: (response) => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
+                    });
+                },
+            );
+        },
+
+        handleArmButton: function () {
+            let me = this;
+            let view = me.getView();
+
+            Ext.Msg.confirm(
+                gettext('Confirm'),
+                gettext('Are you sure you want to arm HA?'),
+                function (btn) {
+                    if (btn !== 'yes') {
+                        return;
+                    }
+                    Proxmox.Utils.API2Request({
+                        url: '/cluster/ha/status/arm-ha',
+                        method: 'POST',
+                        success: function () {
+                            let sv = view.query('pveHAStatusView')[0];
+                            sv.isDisarmedPendingState = false;
+                            sv.setPending(true);
+                        },
+                        failure: (response) => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
+                    });
+                },
+            );
+        },
+    },
+
+    tbar: [
+        {
+            text: gettext('Arm HA'),
+            iconCls: 'fa fa-link',
+            bind: {
+                disabled: '{!haDisarmed}',
+            },
+            handler: 'handleArmButton',
+        },
+        {
+            text: gettext('Disarm HA'),
+            iconCls: 'fa fa-unlink',
+            bind: {
+                disabled: '{haDisarmed}',
+            },
+            menu: [
+                {
+                    text: gettext('Freeze'),
+                    details: gettext(
+                        'This will freeze all services allowing no change to their operational state.',
+                    ),
+                    iconCls: 'fa fa-snowflake-o',
+                    mode: 'freeze',
+                    handler: 'handleDisarmButton',
+                },
+                {
+                    text: gettext('Ignore'),
+                    details: gettext(
+                        'The HA stack will be completely bypassed when the operational state of a service changes.',
+                    ),
+                    iconCls: 'fa fa-eye-slash',
+                    mode: 'ignore',
+                    handler: 'handleDisarmButton',
+                },
+            ],
+        },
+    ],
+
     initComponent: function () {
         var me = this;
 
@@ -30,6 +137,23 @@ Ext.define('PVE.ha.Status', {
                 border: 0,
                 collapsible: true,
                 padding: '0 0 20 0',
+                listeners: {
+                    hastatuschange: function (isDisarmed) {
+                        let vm = me.getViewModel();
+                        let sv = me.query('pveHAStatusView')[0];
+
+                        vm.set('haDisarmed', isDisarmed);
+
+                        if (sv.isDisarmedPendingState === null) {
+                            return;
+                        }
+
+                        if (isDisarmed === sv.isDisarmedPendingState) {
+                            sv.setPending(false);
+                            sv.isDisarmedPendingState = null;
+                        }
+                    },
+                },
             },
             {
                 xtype: 'pveHAResourcesView',
diff --git a/www/manager6/ha/StatusView.js b/www/manager6/ha/StatusView.js
index bc2da71f..33112c45 100644
--- a/www/manager6/ha/StatusView.js
+++ b/www/manager6/ha/StatusView.js
@@ -14,6 +14,15 @@ Ext.define(
             service: 5,
         },
 
+        pending: false,
+        isDisarmedPendingState: null,
+
+        setPending: function (pending) {
+            let me = this;
+            me.pending = pending;
+            me.getView().refresh();
+        },
+
         initComponent: function () {
             var me = this;
 
@@ -42,6 +51,13 @@ Ext.define(
                 },
             });
 
+            me.rstore.on('load', function () {
+                let fencing = store.findRecord('type', 'fencing');
+                let disarmed = fencing && fencing.get('armed-state') === 'disarmed';
+
+                me.fireEvent('hastatuschange', disarmed);
+            });
+
             Ext.apply(me, {
                 store: store,
                 stateful: false,
@@ -59,6 +75,12 @@ Ext.define(
                         width: 80,
                         flex: 1,
                         dataIndex: 'status',
+                        renderer: function (value, _metaData, rec) {
+                            if (rec.data.type === 'fencing' && me.pending) {
+                                return value + ' <i class="fa fa-spinner fa-spin"></i>';
+                            }
+                            return value;
+                        },
                     },
                 ],
             });
@@ -105,6 +127,7 @@ Ext.define(
                         return PVE.data.ResourceStore.guestName(vmid);
                     },
                 },
+                'armed-state',
             ],
             idProperty: 'id',
         });
-- 
2.47.3