Add peer as a belongs-to to service

Working with a peer model as a relationship is much
easier than to workaround a non-relationship in
imported services. This is currently only relevant
for imported-services where we know the peer
in advance.

ui/packages/consul-ui/app/models/service.js

@@ -1,4 +1,4 @@
-import Model, { attr } from '@ember-data/model';
+import Model, { attr, belongsTo } from '@ember-data/model';
 import { computed } from '@ember/object';
 import { tracked } from '@glimmer/tracking';
 import { fragment } from 'ember-data-model-fragments/attributes';
@@ -58,6 +58,18 @@ export default class Service extends Model {
 
   @attr() meta; // {}
 
+  @belongsTo({ async: false }) peer;
+
+  @computed('peer', 'InstanceCount')
+  get isZeroCountButPeered() {
+    return this.peer && this.InstanceCount === 0;
+  }
+
+  @computed('peer.State')
+  get peerIsFailing() {
+    return this.peer && this.peer.State === 'FAILING';
+  }
+
   @computed('ChecksPassing', 'ChecksWarning', 'ChecksCritical')
   get ChecksTotal() {
     return this.ChecksPassing + this.ChecksWarning + this.ChecksCritical;
@@ -79,9 +91,19 @@ export default class Service extends Model {
     return this.MeshEnabled || (this.Kind || '').length > 0;
   }
 
-  @computed('MeshChecksPassing', 'MeshChecksWarning', 'MeshChecksCritical')
+  @computed(
+    'MeshChecksPassing',
+    'MeshChecksWarning',
+    'MeshChecksCritical',
+    'isZeroCountButPeered',
+    'peerIsFailing'
+  )
   get MeshStatus() {
     switch (true) {
+      case this.isZeroCountButPeered:
+        return 'unknown';
+      case this.peerIsFailing:
+        return 'unknown';
       case this.MeshChecksCritical !== 0:
         return 'critical';
       case this.MeshChecksWarning !== 0:
@@ -93,6 +115,27 @@ export default class Service extends Model {
     }
   }
 
+  @computed('isZeroCountButPeered', 'peerIsFailing', 'MeshStatus')
+  get healthTooltipText() {
+    const { MeshStatus, isZeroCountButPeered, peerIsFailing } = this;
+    if (isZeroCountButPeered) {
+      return 'This service currently has 0 instances. Check with the operator of its peer to make sure this is expected behavior.';
+    }
+    if (peerIsFailing) {
+      return 'This peer is out of sync, so the current health statuses of its services are unknown.';
+    }
+    if (MeshStatus === 'critical') {
+      return 'At least one health check on one instance is failing.';
+    }
+    if (MeshStatus === 'warning') {
+      return 'At least one health check on one instance has a warning.';
+    }
+    if (MeshStatus == 'passing') {
+      return 'All health checks are passing.';
+    }
+    return 'There are no health checks';
+  }
+
   @computed('ChecksPassing', 'Proxy.ChecksPassing')
   get MeshChecksPassing() {
     let proxyCount = 0;

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

@@ -1,8 +1,11 @@
 import RepositoryService from 'consul-ui/services/repository';
 import dataSource from 'consul-ui/decorators/data-source';
+import { inject as service } from '@ember/service';
 
 const modelName = 'service';
 export default class ServiceService extends RepositoryService {
+  @service store;
+
   getModelName() {
     return modelName;
   }
@@ -12,9 +15,21 @@ export default class ServiceService extends RepositoryService {
     return super.findAll(...arguments);
   }
 
-  @dataSource('/:partition/:ns/:dc/services/:peer')
-  async findAllImportedServices() {
-    return super.findAll(...arguments);
+  @dataSource('/:partition/:ns/:dc/services/:peer/:peerId')
+  async findAllImportedServices(params, configuration) {
+    // remember peer.id so that we can add it to to the service later on to setup relationship
+    const { peerId } = params;
+
+    // don't send peerId with query
+    delete params.peerId;
+
+    // assign the peer as a belongs-to. we don't have access to any information
+    // we could use to do this in the serializer so we need to do it manually here
+    return super.findAll(params, configuration).then((services) => {
+      const peer = this.store.peekRecord('peer', peerId);
+      services.forEach((service) => (service.peer = peer));
+      return services;
+    });
   }
 
   @dataSource('/:partition/:ns/:dc/gateways/for-service/:gateway')