ui: Don't default to the default namespace, use the token default namespace instead (#10503)

The default namespace, and the tokens default namespace (or its origin namespace) is slightly more complicated than other things we deal with in the UI, there's plenty of info/docs on this that I've added in this PR.

Previously:

When a namespace was not specified in the URL, we used to default to the default namespace. When you logged in using a token we automatically forward you the namespace URL that your token originates from, so you are then using the namespace for your token by default. You can of course then edit the URL to remove the namespace portion, or perhaps revisit the UI at the root path with you token already set. In these latter cases we would show you information from the default namespace. So if you had no namespace segment/portion in the URL, we would assume default, perform actions against the default namespace and highlight the default namespace in the namespace selector menu. If you wanted to perform actions in your tokens origin namespace you would have to manually select it from the namespace selector menu.

This PR:

Now, when you have no namespace segment/portion in the URL, we use the token's origin namespace instead (and if you don't have a token, we then use the default namespace like it was previously)

Notes/thoughts:

I originally thought we were showing an incorrectly selected namespace in the namespace selector, but it also matched up with what we were doing with the API, so it was in fact correct. The issue was more that we weren't selecting the origin namespace of the token for the user when a namespace segment was omitted from the URL. Seeing as we automatically forward you to the tokens origin namespace when you log in, and we were correctly showing the namespace we were acting on when you had no namespace segment in the URL (in the previous case default), I'm not entirely sure how much of an issue this actually was.

This characteristic of namespace+token+namespace is a little weird and its easy to miss a subtlety or two so I tried to add some documentation in here for future me/someone else (including some in depth code comment around one of the API endpoints where this is very subtle and very hard to miss). I'm not the greatest at words, so would be great to get some edits there if it doesn't seem clear to folks.

The fact that we used to save your previous datacenter and namespace into local storage for reasons also meant the interaction here was slightly more complicated than it needed to be, so whilst we were here we rejigged things slightly to satisfy said reasons still but not use local storage (we try and grab the info from higher up). A lot of the related code here is from before we had our Routlets which I think could probably make all of this a lot less complicated, but I didn't want to do a wholesale replacement in this PR, we can save that for a separate PR on its own at some point.

.changelog/10503.txt

@@ -0,0 +1,4 @@
+```release-note:bug
+ui: Use the token's namespace instead of the default namespace when not
+specifying a namespace in the URL
+```

ui/packages/consul-ui/app/components/auth-form/index.hbs

@@ -75,8 +75,9 @@
       <em>Contact your administrator for login credentials.</em>
     </form>
 {{#if (env 'CONSUL_SSO_ENABLED')}}
+    {{!-- This `or` can be completely removed post 1.10 as 1.10 has optional params with default values --}}
     <DataSource
-      @src={{concat '/' (or nspace 'default') '/' dc '/oidc/providers'}}
+      @src={{concat '/' (or nspace '') '/' dc '/oidc/providers'}}
       @onchange={{queue (action (mut providers) value="data")}}
       @onerror={{queue (action (mut error) value="error.errors.firstObject")}}
       @loading="lazy"

ui/packages/consul-ui/app/components/child-selector/index.hbs

@@ -9,7 +9,7 @@
     <span><YieldSlot @name="label">{{yield}}</YieldSlot></span>
     {{#if isOpen}}
       <DataSource
-        @src={{concat '/' (or nspace 'default') '/' dc '/' (pluralize type)}}
+        @src={{concat '/' nspace '/' dc '/' (pluralize type)}}
         @onchange={{action (mut allOptions) value="data"}}
       />
     {{/if}}

ui/packages/consul-ui/app/components/token-source/index.hbs

@@ -1,6 +1,7 @@
 <StateChart @src={{chart}} @initial={{if (eq type 'oidc') 'provider' 'secret'}} as |State Guard Action dispatch state|>
   <Guard @name="isSecret" @cond={{action 'isSecret'}} />
-  {{#let (concat '/' (or nspace 'default') '/' dc) as |path|}}
+  {{!-- This `or` can be completely removed post 1.10 as 1.10 has optional params with default values --}}
+  {{#let (concat '/' (or nspace '') '/' dc) as |path|}}
     <State @matches="secret">
       <DataSource
         @src={{concat path '/token/self/' value}}

ui/packages/consul-ui/app/routes/dc.js

@@ -5,23 +5,6 @@ import { get, action } from '@ember/object';
 // TODO: We should potentially move all these nspace related things
 // up a level to application.js
 
-const findActiveNspace = function(nspaces, nspace) {
-  let found = nspaces.find(function(item) {
-    return item.Name === nspace.Name;
-  });
-  if (typeof found === 'undefined') {
-    // if we can't find the nspace that was saved
-    // try default
-    found = nspaces.find(function(item) {
-      return item.Name === 'default';
-    });
-    // if there is no default just choose the first
-    if (typeof found === 'undefined') {
-      found = nspaces.firstObject;
-    }
-  }
-  return found;
-};
 export default class DcRoute extends Route {
   @service('repository/dc') repo;
   @service('repository/permission') permissionsRepo;
@@ -29,18 +12,11 @@ export default class DcRoute extends Route {
   @service('settings') settingsRepo;
 
   async model(params) {
-    const app = this.modelFor('application');
-
     let [token, nspace, dc] = await Promise.all([
       this.settingsRepo.findBySlug('token'),
       this.nspacesRepo.getActive(this.optionalParams().nspace),
-      this.repo.findBySlug(params.dc, app.dcs),
+      this.repo.findBySlug(params.dc),
     ]);
-    // if there is only 1 namespace then use that
-    // otherwise find the namespace object that corresponds
-    // to the active one
-    nspace =
-      app.nspaces.length > 1 ? findActiveNspace(app.nspaces, nspace) : app.nspaces.firstObject;
 
     // When disabled nspaces is [], so nspace is undefined
     const permissions = await this.permissionsRepo.findAll({

ui/packages/consul-ui/app/routes/dc/kv/edit.js

@@ -21,7 +21,7 @@ export default class EditRoute extends Route {
     const nspace = this.optionalParams().nspace;
     return hash({
       dc: dc,
-      nspace: nspace || 'default',
+      nspace: nspace,
       parent:
         typeof key !== 'undefined'
           ? this.repo.findBySlug({

ui/packages/consul-ui/app/routes/settings.js

@@ -1,33 +1,50 @@
-import { inject as service } from '@ember/service';
 import Route from 'consul-ui/routing/route';
-import { hash } from 'rsvp';
+import { inject as service } from '@ember/service';
-import { get, set, action } from '@ember/object';
+import { get, action } from '@ember/object';
 
 export default class SettingsRoute extends Route {
-  @service('client/http')
+  @service('client/http') client;
-  client;
 
-  @service('settings')
+  @service('settings') repo;
-  repo;
+  @service('repository/dc') dcRepo;
+  @service('repository/permission') permissionsRepo;
+  @service('repository/nspace/disabled') nspacesRepo;
 
-  @service('repository/dc')
+  async model(params) {
-  dcRepo;
+    // reach up and grab things from the application route/controller
+    const app = this.controllerFor('application');
 
-  @service('repository/nspace/disabled')
+    // figure out if we have anything missing for menus etc and get them if
-  nspacesRepo;
+    // so, otherwise just use what they already are
+    const [item, dc] = await Promise.all([
+      this.repo.findAll(),
+      typeof app.dc === 'undefined' ? this.dcRepo.getActive() : app.dc,
+    ]);
+    const nspace =
+      typeof app.nspace === 'undefined'
+        ? await this.nspacesRepo.getActive(item.nspace)
+        : app.nspace;
+    const permissions =
+      typeof app.permissions === 'undefined'
+        ? await this.permissionsRepo.findAll({
+            dc: dc.Name,
+            nspace: nspace.Name,
+          })
+        : app.permissions;
 
-  model(params) {
+    // reset the things higher up in the application if they were already set
-    const app = this.modelFor('application');
+    // this won't do anything
-    return hash({
+    this.controllerFor('application').setProperties({
-      item: this.repo.findAll(),
+      dc: dc,
-      dc: this.dcRepo.getActive(undefined, app.dcs),
+      nspace: nspace,
-      nspace: this.nspacesRepo.getActive(),
+      token: item.token,
-    }).then(model => {
+      permissions: permissions,
-      if (typeof get(model.item, 'client.blocking') === 'undefined') {
-        set(model, 'item.client', { blocking: true });
-      }
-      return model;
     });
+
+    if (typeof get(item, 'client.blocking') === 'undefined') {
+      item.client = { blocking: true };
+    }
+    return { item };
   }
 
   setupController(controller, model) {

ui/packages/consul-ui/app/serializers/application.js

@@ -11,7 +11,7 @@ import { FOREIGN_KEY as DATACENTER_KEY } from 'consul-ui/models/dc';
 import { NSPACE_KEY } from 'consul-ui/models/nspace';
 import createFingerprinter from 'consul-ui/utils/create-fingerprinter';
 
-const DEFAULT_NSPACE = 'default';
+const DEFAULT_NSPACE = '';
 
 const map = function(obj, cb) {
   if (!Array.isArray(obj)) {

ui/packages/consul-ui/app/services/repository/dc.js

@@ -18,11 +18,11 @@ export default class DcService extends RepositoryService {
     return this.store.query(this.getModelName(), {});
   }
 
-  async findBySlug(name, items) {
+  async findBySlug(name) {
+    const items = this.store.peekAll('dc');
     if (name != null) {
       const item = await items.findBy('Name', name);
       if (typeof item !== 'undefined') {
-        await this.settings.persist({ dc: get(item, 'Name') });
         return item;
       }
     }
@@ -32,17 +32,13 @@ export default class DcService extends RepositoryService {
   }
 
   async getActive(name, items) {
-    return Promise.all([name || this.settings.findBySlug('dc'), items || this.findAll()]).then(
+    return Promise.all([name, items || this.findAll()]).then(([name, items]) => {
-      ([name, items]) => {
+      return this.findBySlug(name, items).catch(async e => {
-        return this.findBySlug(name, items).catch(async e => {
+        return (
-          const item =
+          items.findBy('Name', this.env.var('CONSUL_DATACENTER_LOCAL')) || get(items, 'firstObject')
-            items.findBy('Name', this.env.var('CONSUL_DATACENTER_LOCAL')) ||
+        );
-            get(items, 'firstObject');
+      });
-          await this.settings.persist({ dc: get(item, 'Name') });
+    });
-          return item;
-        });
-      }
-    );
   }
 
   async clearActive() {

ui/packages/consul-ui/app/services/repository/nspace/disabled.js

@@ -2,7 +2,6 @@ import RepositoryService from 'consul-ui/services/repository';
 import { PRIMARY_KEY, SLUG_KEY } from 'consul-ui/models/nspace';
 
 const modelName = 'nspace';
-const DEFAULT_NSPACE = 'default';
 export default class NspaceDisabledService extends RepositoryService {
   getPrimaryKey() {
     return PRIMARY_KEY;
@@ -22,7 +21,7 @@ export default class NspaceDisabledService extends RepositoryService {
 
   getActive() {
     return {
-      Name: DEFAULT_NSPACE,
+      Name: 'default',
     };
   }
 

ui/packages/consul-ui/app/services/repository/nspace/enabled.js

@@ -1,7 +1,27 @@
 import { inject as service } from '@ember/service';
 import RepositoryService from 'consul-ui/services/repository';
 import { PRIMARY_KEY, SLUG_KEY } from 'consul-ui/models/nspace';
+import { runInDebug } from '@ember/debug';
 
+const findActiveNspace = function(nspaces, nspace) {
+  let found = nspaces.find(function(item) {
+    return item.Name === nspace.Name;
+  });
+  if (typeof found === 'undefined') {
+    runInDebug(_ =>
+      console.info(`${nspace.Name} not found in [${nspaces.map(item => item.Name).join(', ')}]`)
+    );
+    // if we can't find the nspace that was specified try default
+    found = nspaces.find(function(item) {
+      return item.Name === 'default';
+    });
+    // if there is no default just choose the first
+    if (typeof found === 'undefined') {
+      found = nspaces[0];
+    }
+  }
+  return found;
+};
 const modelName = 'nspace';
 export default class NspaceEnabledService extends RepositoryService {
   @service('router') router;
@@ -46,20 +66,14 @@ export default class NspaceEnabledService extends RepositoryService {
     });
   }
 
-  getActive(paramsNspace) {
+  async getActive(paramsNspace = '') {
-    return this.settings
+    const nspaces = this.store.peekAll('nspace').toArray();
-      .findBySlug('nspace')
+    if (paramsNspace.length === 0) {
-      .then(function(nspace) {
+      const token = await this.settings.findBySlug('token');
-        // If we can't figure out the nspace from the URL use
+      paramsNspace = token.Namespace || 'default';
-        // the previously saved nspace and if thats not there
+    }
-        // then just use default
+    // if there is only 1 namespace then use that, otherwise find the
-        return paramsNspace || nspace || 'default';
+    // namespace object that corresponds to the active one
-      })
+    return nspaces.length === 1 ? nspaces[0] : findActiveNspace(nspaces, { Name: paramsNspace });
-      .then(nspace => this.settings.persist({ nspace: nspace }))
-      .then(function(item) {
-        return {
-          Name: item.nspace,
-        };
-      });
   }
 }

ui/packages/consul-ui/app/services/repository/oidc-provider.js

@@ -7,8 +7,8 @@ import dataSource from 'consul-ui/decorators/data-source';
 const modelName = 'oidc-provider';
 const OAUTH_PROVIDER_NAME = 'oidc-with-url';
 export default class OidcProviderService extends RepositoryService {
-  @service('torii')
+  @service('torii') manager;
-  manager;
+  @service('repository/settings') settings;
 
   init() {
     super.init(...arguments);
@@ -25,8 +25,31 @@ export default class OidcProviderService extends RepositoryService {
   }
 
   @dataSource('/:ns/:dc/oidc/provider/:id')
-  async findBySlug() {
+  async findBySlug(params) {
-    return super.findBySlug(...arguments);
+    // This addition is mainly due to ember-data book-keeping This is one of
+    // the only places where Consul w/namespaces enabled doesn't return a
+    // response with a Namespace property, but in order to keep ember-data
+    // id's happy we need to fake one. Usually when we make a request to consul
+    // with an empty `ns=` Consul will use the namespace that is assigned to
+    // the token, and when we get the response we can pick that back off the
+    // responses `Namespace` property. As we don't receive a `Namespace`
+    // property here, we have to figure this out ourselves. Biut we also want
+    // to make this completely invisible to 'the application engineer/a
+    // template engineer'. This feels like the best place/way to do it as we
+    // are already in a asynchronous method, and we avoid adding extra 'just
+    // for us' parameters to the query object. There is a chance that as we
+    // are discovering the tokens default namespace on the frontend and
+    // assigning that to the ns query param, the token default namespace 'may'
+    // have changed by the time the request hits the backend. As this is
+    // extremely unlikely and in the scheme of things not a big deal, we
+    // decided that doing this here is ok and avoids doing this in a more
+    // complicated manner.
+    const token = (await this.settings.findBySlug('token')) || {};
+    return super.findBySlug({
+      ns: params.ns || token.Namespace || 'default',
+      dc: params.dc,
+      id: params.id,
+    });
   }
 
   @dataSource('/:ns/:dc/oidc/authorize/:id/:code/:state')

ui/packages/consul-ui/docs/significant-patterns.mdx

@@ -1,16 +1,18 @@
 # Significant patterns
 
+## Ember specific
+
 The Consul UI tries to follow typical conventional ember but differs
 significantly in several places:
 
-## Routing
+### Routing
 
 We use a declarative configuration format for our routing rather than Ember's
 DSL. The format is closely modeled on Ember's DSL and if you need to generate
 Ember's DSL from this for some reason you can use one of our Debug Utilities
 to do this.
 
-## Routes
+### Routes
 
 We use a specific BaseRoute as a parent Route for **all** our Routes. This contains project wide
 functionality for several important additions. If you use the normal `ember
@@ -27,7 +29,7 @@ has no query parameters configured they are copied over from the Route.
 Preferably we don't use Controllers, but this doesn't mean you shouldn't if
 you need to.
 
-## Routlets
+### Routlets
 
 We use have a concept of 'routlets', the combination of a `<Route />` and
 `<Outlet />` components that we use within our route templates to achieve
@@ -38,7 +40,7 @@ Every route template should be wrapped in a `<Route @name={{routeName}}>` compon
 The `routeName` variable is made available in every single route template and
 it equal to the routeName of the current template e.g. `dc.services.index`
 
-## DataSources
+### DataSources
 
 In order to support our live updating long-polling blocking queries we use
 'DataSources' which come in two flavours. A service backed
@@ -79,7 +81,7 @@ And a component based approach for use within templates.
 
 See the relavant component/service documentation for more detail.
 
-## Components
+### Components
 
 You could group our components into two different groups:
 
@@ -94,7 +96,7 @@ We currently use a mix of named/block slots and contextual components and its
 fair to say that we use more named/block slots, but both are fine depending on
 your use case.
 
-## Significant Addons
+### Significant Addons
 
 - `ember-data` - model layer
 - `ember-stargate` - wormhole/portal/put this DOM over there functionality
@@ -105,4 +107,47 @@ your use case.
 
 Please see our package.json file dependencies.
 
+## Consul specific
 
+### Namespace support
+
+Whilst Consul namespaces are a OSS feature of Consul, we almost always build
+things 'pretending' that namespaces are always enabled. Then there is code
+within the data layer of the application that removes any namespace related
+query parameters.
+
+Namespaces are a little more complex to think about than other things in
+Consul as we have the idea of 'the default' namespace, and then additionally
+an ACL token can have 'a default' namespace (not the same as 'the default'
+namespace) which is a little like a namespace that is assigned to the token,
+or where the token originated from. The Consul backend can then use the tokens
+default/origin/assigned namespace to figure out whether and how to filter any
+results by namespace before sending those results to the UI.
+
+When you are requesting data from the API you should always include a
+namespace (if applicable to the API endpoint), but you should never default
+the namespace value to 'the default' namespace - `default`. Conversly, when
+receiving data from an API response, there are some places where we do default
+a namespace to 'the default' namespace `default`. The easiest way to think
+about this is: If its on the way out, don't add a default ever, if its on the
+way in you may need to default any potentially empty Namespace parameters to
+`default` (due to using Consul without namespaces enabled), there is a
+NspaceAbility and/or an `env` feature flag to help you to discover this.
+
+We've made various decisions in the UI to make it hard to omit a namespace
+when you shouldn't, for example using our DataSource component requires you to
+include a defined namespace parameter (even if the value for that is `''`),
+and the route parameter `nspace` value will always default to `''`. It also
+reminds you to be continually thinking about namespaces whilst adding new
+features.
+
+Lastly, we always refer to namespaces in code as the word `nspace` or
+`nspaces`. Both `ns` and `namespace` have other purposes in Ember and Ember
+Data (in various places one is significant but not the other and vice versa).
+Always using the term `nspace` means we avoid any strange bugs or
+clashes/overwrites with anything in Ember or Ember Data core. The only place
+where we use `ns` or `Namespace` is to construct API requests/responses.
+Sometimes when using this term in CSS or on plain javascript objects, this may
+seem unnecessary but it just helps smooth over writing code around namespaces
+as you don't have the split second decision of whether you write `ns` or
+`namespace` - just use `nspace` and everything will be fine :)

ui/packages/consul-ui/tests/integration/serializers/acl-test.js

@@ -49,7 +49,7 @@ module('Integration | Serializer | acl', function(hooks) {
         Datacenter: dc,
         [META]: {
           [DC.toLowerCase()]: dc,
-          [NSPACE.toLowerCase()]: nspace,
+          [NSPACE.toLowerCase()]: '',
         },
         // TODO: default isn't required here, once we've
         // refactored out our Serializer this can go

ui/packages/consul-ui/tests/integration/serializers/kv-test.js

@@ -57,7 +57,7 @@ module('Integration | Serializer | kv', function(hooks) {
           Datacenter: dc,
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload[0].Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
           Namespace: payload[0].Namespace || undefinedNspace,
           uid: `["${payload[0].Namespace || undefinedNspace}","${dc}","${id}"]`,

ui/packages/consul-ui/tests/integration/serializers/node-test.js

@@ -80,7 +80,7 @@ module('Integration | Serializer | node', function(hooks) {
         Port: '8500',
         [META]: {
           [DC.toLowerCase()]: dc,
-          [NSPACE.toLowerCase()]: nspace,
+          [NSPACE.toLowerCase()]: '',
         },
       };
       const actual = serializer.respondForQueryLeader(

ui/packages/consul-ui/tests/integration/serializers/oidc-provider-test.js

@@ -44,18 +44,24 @@ module('Integration | Serializer | oidc-provider', function(hooks) {
       const dc = 'dc-1';
       const id = 'slug';
       const request = {
-        url: `/v1/acl/oidc/auth-url?dc=${dc}`,
+        url: `/v1/acl/oidc/auth-url?dc=${dc}${
+          typeof nspace !== 'undefined' ? `&ns=${nspace || undefinedNspace}` : ``
+        }`,
       };
       return get(request.url).then(function(payload) {
+        // The response here never has a Namespace property so its ok to just
+        // use the query parameter as the expected nspace value. See
+        // implementation of this method for info on why this is slightly
+        // different to other tests
         const expected = Object.assign({}, payload, {
           Name: id,
           Datacenter: dc,
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload.Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
-          Namespace: payload.Namespace || undefinedNspace,
+          Namespace: nspace || undefinedNspace,
-          uid: `["${payload.Namespace || undefinedNspace}","${dc}","${id}"]`,
+          uid: `["${nspace || undefinedNspace}","${dc}","${id}"]`,
         });
         const actual = serializer.respondForQueryRecord(
           function(cb) {
@@ -66,6 +72,7 @@ module('Integration | Serializer | oidc-provider', function(hooks) {
           {
             dc: dc,
             id: id,
+            ns: nspace,
           }
         );
         assert.deepEqual(actual, expected);

ui/packages/consul-ui/tests/integration/serializers/policy-test.js

@@ -49,7 +49,7 @@ module('Integration | Serializer | policy', function(hooks) {
           Datacenter: dc,
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload.Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
           Namespace: payload.Namespace || undefinedNspace,
           uid: `["${payload.Namespace || undefinedNspace}","${dc}","${id}"]`,

ui/packages/consul-ui/tests/integration/serializers/role-test.js

@@ -53,7 +53,7 @@ module('Integration | Serializer | role', function(hooks) {
           Policies: createPolicies(payload),
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload.Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
           Namespace: payload.Namespace || undefinedNspace,
           uid: `["${payload.Namespace || undefinedNspace}","${dc}","${id}"]`,

ui/packages/consul-ui/tests/integration/serializers/service-instance-test.js

@@ -28,7 +28,7 @@ module('Integration | Serializer | service-instance', function(hooks) {
           Datacenter: dc,
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload[0].Service.Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
           Namespace: payload[0].Service.Namespace || undefinedNspace,
           uid: `["${payload[0].Service.Namespace || undefinedNspace}","${dc}","${node}","${id}"]`,

ui/packages/consul-ui/tests/integration/serializers/session-test.js

@@ -54,7 +54,7 @@ module('Integration | Serializer | session | response', function(hooks) {
           Datacenter: dc,
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload[0].Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
           Namespace: payload[0].Namespace || undefinedNspace,
           uid: `["${payload[0].Namespace || undefinedNspace}","${dc}","${id}"]`,

ui/packages/consul-ui/tests/integration/serializers/token-test.js

@@ -53,7 +53,7 @@ module('Integration | Serializer | token', function(hooks) {
           Datacenter: dc,
           [META]: {
             [DC.toLowerCase()]: dc,
-            [NSPACE.toLowerCase()]: payload.Namespace || undefinedNspace,
+            [NSPACE.toLowerCase()]: nspace || '',
           },
           Namespace: payload.Namespace || undefinedNspace,
           uid: `["${payload.Namespace || undefinedNspace}","${dc}","${id}"]`,

ui/packages/consul-ui/tests/unit/serializers/application-test.js

@@ -67,7 +67,7 @@ module('Unit | Serializer | application', function(hooks) {
       Name: 'name',
       [META]: {
         [DC.toLowerCase()]: 'dc-1',
-        [NSPACE.toLowerCase()]: 'default',
+        [NSPACE.toLowerCase()]: '',
       },
       'primary-key-name': 'name',
     };