mgr/dashboard: Display number of sessions on iSCSI overview page

Signed-off-by: Ricardo Marques <rimarques@suse.com>

src/pybind/mgr/dashboard/controllers/iscsi.py

@@ -90,12 +90,19 @@ class IscsiUi(BaseController):
         for gateway_name in gateways_names:
             gateway = {
                 'name': gateway_name,
-                'state': 'N/A',
-                'num_targets': 'N/A'
+                'state': '',
+                'num_targets': 'n/a',
+                'num_sessions': 'n/a'
             }
             try:
                 IscsiClient.instance(gateway_name=gateway_name).ping()
                 gateway['state'] = 'up'
+                if config:
+                    gateway['num_sessions'] = 0
+                    if gateway_name in config['gateways']:
+                        gatewayinfo = IscsiClient.instance(
+                            gateway_name=gateway_name).get_gatewayinfo()
+                        gateway['num_sessions'] = gatewayinfo['num_sessions']
             except RequestException:
                 gateway['state'] = 'down'
             if config:

src/pybind/mgr/dashboard/frontend/src/app/ceph/block/iscsi/iscsi.component.ts

@@ -47,6 +47,10 @@ export class IscsiComponent implements OnInit {
       {
         name: this.i18n('# Targets'),
         prop: 'num_targets'
+      },
+      {
+        name: this.i18n('# Sessions'),
+        prop: 'num_sessions'
       }
     ];
     this.imagesColumns = [

src/pybind/mgr/dashboard/frontend/src/locale/messages.xlf

@@ -4246,6 +4246,10 @@
           <context context-type="sourcefile">src/app/ceph/block/iscsi-target-list/iscsi-target-list.component.ts</context>
           <context context-type="linenumber">1</context>
         </context-group>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/app/ceph/block/iscsi/iscsi.component.ts</context>
+          <context context-type="linenumber">1</context>
+        </context-group>
       </trans-unit>
       <trans-unit id="873b72903b1858a9cd6c8967521030b4d7d1435b" datatype="html">
         <source>State</source>

src/pybind/mgr/dashboard/services/iscsi_client.py

@@ -102,6 +102,11 @@ class IscsiClient(RestClient):
             'skipchecks': 'true'
         })
 
+    @RestClient.api_get('/api/gatewayinfo')
+    def get_gatewayinfo(self, request=None):
+        logger.debug("iSCSI: Getting gatewayinfo")
+        return request()
+
     @RestClient.api_put('/api/disk/{pool}/{image}')
     def create_disk(self, pool, image, backstore, request=None):
         logger.debug("iSCSI: Creating disk: %s/%s", pool, image)