fetch gke parameters from frontend

app/assets/javascripts/pages/projects/clusters/gcp/new/index.js

+/* global gapi */
+import Vue from 'vue';
+import Flash from '~/flash';
+import { s__ } from '~/locale';
+import GkeProjectIdDropdown from '~/projects/gke_cluster_dropdowns/components/gke_project_id_dropdown.vue';
+import GkeZoneDropdown from '~/projects/gke_cluster_dropdowns/components/gke_zone_dropdown.vue';
+import GkeMachineTypeDropdown from '~/projects/gke_cluster_dropdowns/components/gke_machine_type_dropdown.vue';
+
+const GCP_API_ERROR =
+  'ClusterIntegration|An error occurred when trying to contact the Google Cloud API. Please try again later.';
+
+function mountGkeProjectIdDropdown() {
+  const el = document.getElementById('js-gcp-project-id-dropdown-entry-point');
+  const hiddenInput = el.querySelector('input');
+
+  if (!el) return;
+  // debugger;
+
+  // eslint-disable-next-line no-new
+  new Vue({
+    el,
+    components: {
+      GkeProjectIdDropdown,
+    },
+    render: createElement =>
+      createElement('gke-project-id-dropdown', {
+        props: {
+          docsUrl: el.dataset.docsurl,
+          service: gapi.client.cloudresourcemanager,
+          fieldName: hiddenInput.getAttribute('name'),
+          fieldId: hiddenInput.getAttribute('id'),
+        },
+      }),
+  });
+}
+
+function mountGkeZoneDropdown() {
+  const el = document.getElementById('js-gcp-zone-dropdown-entry-point');
+  const hiddenInput = el.querySelector('input');
+
+  if (!el) return;
+  // debugger;
+
+  // eslint-disable-next-line no-new
+  new Vue({
+    el,
+    components: {
+      GkeZoneDropdown,
+    },
+    render: createElement =>
+      createElement('gke-zone-dropdown', {
+        props: {
+          service: gapi.client.compute,
+          fieldName: hiddenInput.getAttribute('name'),
+          fieldId: hiddenInput.getAttribute('id'),
+        },
+      }),
+  });
+}
+
+function mountGkeMachineTypeDropdown() {
+  const el = document.getElementById('js-gcp-machine-type-dropdown-entry-point');
+  const hiddenInput = el.querySelector('input');
+
+  if (!el) return;
+  // debugger;
+
+  // eslint-disable-next-line no-new
+  new Vue({
+    el,
+    components: {
+      GkeMachineTypeDropdown,
+    },
+    render: createElement =>
+      createElement('gke-machine-type-dropdown', {
+        props: {
+          service: gapi.client.compute,
+          fieldName: hiddenInput.getAttribute('name'),
+          fieldId: hiddenInput.getAttribute('id'),
+        },
+      }),
+  });
+}
+
+function initializeGapiClient() {
+  const el = document.getElementById('new_cluster');
+
+  gapi.client.setToken({ access_token: el.dataset.token });
+
+  gapi.client
+    .load('https://www.googleapis.com/discovery/v1/apis/cloudresourcemanager/v1/rest')
+    .then(() => {
+      mountGkeProjectIdDropdown();
+    })
+    .catch(() => {
+      Flash(s__(GCP_API_ERROR));
+    });
+
+  gapi.client
+    .load('https://www.googleapis.com/discovery/v1/apis/compute/v1/rest')
+    .then(() => {
+      mountGkeZoneDropdown();
+      mountGkeMachineTypeDropdown();
+    })
+    .catch(() => {
+      Flash(s__(GCP_API_ERROR));
+    });
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+  if (typeof gapi === 'undefined') {
+    Flash(s__(GCP_API_ERROR));
+    return false;
+  }
+
+  gapi.load('client', initializeGapiClient);
+});

app/assets/javascripts/projects/gke_cluster_dropdowns/components/dropdown_button.vue

+<script>
+import { __ } from '~/locale';
+import LoadingIcon from '~/vue_shared/components/loading_icon.vue';
+
+export default {
+  components: {
+    LoadingIcon,
+  },
+  props: {
+    isDisabled: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    isLoading: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    toggleText: {
+      type: String,
+      required: true,
+      default: __('Select'),
+    },
+  },
+  computed: {},
+};
+</script>
+
+<template>
+  <button
+    class="dropdown-menu-toggle dropdown-menu-full-width"
+    type="button"
+    data-toggle="dropdown"
+    aria-expanded="true"
+    :disabled="isDisabled || isLoading"
+  >
+    <loading-icon
+      v-show="isLoading"
+      :inline="true"
+    />
+    <span class="dropdown-toggle-text">
+      {{ toggleText }}
+    </span>
+    <i
+      aria-hidden="true"
+      data-hidden="true"
+      class="fa fa-chevron-down"
+    ></i>
+  </button>
+</template>

app/assets/javascripts/projects/gke_cluster_dropdowns/components/gke_machine_type_dropdown.vue

+<script>
+import Flash from '~/flash';
+import { s__ } from '~/locale';
+import { mapActions } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import LoadingIcon from '~/vue_shared/components/loading_icon.vue';
+import DropdownSearchInput from '~/vue_shared/components/dropdown/dropdown_search_input.vue';
+import DropdownHiddenInput from '~/vue_shared/components/dropdown/dropdown_hidden_input.vue';
+
+import eventHub from '../eventhub';
+import store from '../stores';
+import DropdownButton from './dropdown_button.vue';
+// TODO: Fall back to default us-central1-a or first option
+
+export default {
+  name: 'GkeMachineTypeDropdown',
+  store,
+  components: {
+    Icon,
+    LoadingIcon,
+    DropdownButton,
+    DropdownSearchInput,
+    DropdownHiddenInput,
+  },
+  props: {
+    service: {
+      type: Object,
+      required: true,
+    },
+    fieldId: {
+      type: String,
+      required: true,
+    },
+    fieldName: {
+      type: String,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      isLoading: false,
+      hasErrors: false,
+      searchQuery: '',
+      selectedItem: '',
+      items: [],
+    };
+  },
+  computed: {
+    isDisabled() {
+      return (
+        this.$store.state.selectedProject.length === 0 ||
+        this.$store.state.selectedZone.length === 0
+      );
+    },
+    results() {
+      return this.items.filter(item => item.name.toLowerCase().indexOf(this.searchQuery) > -1);
+    },
+    toggleText() {
+      if (this.$store.state.selectedMachineType) {
+        return this.$store.state.selectedMachineType;
+      }
+
+      if (this.isLoading) {
+        return s__('ClusterIntegration|Fetching machine types');
+      }
+
+      if (!this.$store.state.selectedProject) {
+        return s__('ClusterIntegration|Select project and zone to choose machine type.');
+      }
+
+      return this.$store.state.selectedZone
+        ? s__('ClusterIntegration|Select machine type')
+        : s__('ClusterIntegration|Select zone to choose machine type');
+    },
+    placeholderText() {
+      return s__('ClusterIntegration|Search machine types');
+    },
+  },
+  created() {
+    eventHub.$on('zoneSelected', this.fetchItems);
+    eventHub.$on('machineTypeSelected', this.enableSubmit);
+  },
+  methods: {
+    ...mapActions(['setMachineType']),
+    fetchItems() {
+      this.isLoading = true;
+      const request = this.service.machineTypes.list({
+        project: this.$store.state.selectedProject,
+        zone: this.$store.state.selectedZone,
+      });
+
+      return request.then(
+        resp => {
+          this.items = resp.result.items;
+
+          // Cause error
+          // this.items = data;
+
+          // Single state
+          // this.items = [
+          //   {
+          //     create_time: '2018-01-16T15:55:02.992Z',
+          //     lifecycle_state: 'ACTIVE',
+          //     name: 'NaturalInterface',
+          //     item_id: 'naturalinterface-192315',
+          //     item_number: 840816084083,
+          //   },
+          // ];
+
+          if (this.items.length === 1) {
+            this.isDisabled = true;
+            this.setMachineType(this.items[0].name);
+          }
+
+          this.isLoading = false;
+        },
+        () => {
+          this.isLoading = false;
+          this.hasErrors = true;
+
+          if (resp.result.error) {
+            Flash(
+              `${s__(
+                'ClusterIntegration|An error occured while trying to fetch zone machine types:',
+              )} ${resp.result.error.message}`,
+            );
+          }
+        },
+        this,
+      );
+    },
+    enableSubmit() {
+      document.querySelector('input[type=submit]').removeAttribute('disabled');
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    class="dropdown"
+    :class="{ 'gl-show-field-errors': hasErrors }"
+  >
+    <dropdown-hidden-input
+      :name="fieldName"
+      :value="$store.state.selectedProject"
+    />
+    <dropdown-button
+      :class="{ 'gl-field-error-outline': hasErrors }"
+      :is-disabled="isDisabled"
+      :is-loading="isLoading"
+      :toggle-text="toggleText"
+    />
+    <div class="dropdown-menu dropdown-select">
+      <dropdown-search-input
+        v-model="searchQuery"
+        :placeholder-text="placeholderText"
+      />
+      <div class="dropdown-content">
+        <ul>
+          <li
+            v-for="result in results"
+            :key="result.id"
+          >
+            <a
+              href="#"
+              @click.prevent="setMachineType(result.name)"
+            >{{ result.name }}</a>
+          </li>
+        </ul>
+      </div>
+      <div class="dropdown-loading">
+        <loading-icon />
+      </div>
+    </div>
+  </div>
+</template>

app/assets/javascripts/projects/gke_cluster_dropdowns/components/gke_project_id_dropdown.vue

+<script>
+import _ from 'underscore';
+import Flash from '~/flash';
+import { s__, sprintf } from '~/locale';
+import { mapActions } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import LoadingIcon from '~/vue_shared/components/loading_icon.vue';
+import DropdownSearchInput from '~/vue_shared/components/dropdown/dropdown_search_input.vue';
+import DropdownHiddenInput from '~/vue_shared/components/dropdown/dropdown_hidden_input.vue';
+
+import store from '../stores';
+import DropdownButton from './dropdown_button.vue';
+// TODO: Consolidate dropdown code
+// TODO: Account for invalid project settings/errors (project returns error when retrieving zones)
+
+export default {
+  name: 'GkeProjectIdDropdown',
+  store,
+  components: {
+    Icon,
+    LoadingIcon,
+    DropdownButton,
+    DropdownSearchInput,
+    DropdownHiddenInput,
+  },
+  props: {
+    docsUrl: {
+      type: String,
+      required: true,
+    },
+    service: {
+      type: Object,
+      required: true,
+    },
+    fieldId: {
+      type: String,
+      required: true,
+    },
+    fieldName: {
+      type: String,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      isDisabled: false,
+      isLoading: true,
+      hasErrors: false,
+      searchQuery: '',
+      selectedItem: '',
+      items: [],
+    };
+  },
+  computed: {
+    results() {
+      return this.items.filter(item => item.name.toLowerCase().indexOf(this.searchQuery) > -1);
+    },
+    toggleText() {
+      if (this.$store.state.selectedProject) {
+        return this.$store.state.selectedProject;
+      }
+
+      return this.isLoading
+        ? s__('ClusterIntegration|Fetching projects')
+        : s__('ClusterIntegration|Select project');
+    },
+    placeholderText() {
+      return s__('ClusterIntegration|Search projects');
+    },
+    helpText() {
+      let message;
+      if (this.hasErrors) {
+        message =
+          'ClusterIntegration|We were unable to fetch any projects. Ensure that you have a project on %{docsLinkStart}Google Cloud Platform%{docsLinkEnd}.';
+      }
+
+      message = this.items.length
+        ? 'ClusterIntegration|To use a new project, first create one on %{docsLinkStart}Google Cloud Platform%{docsLinkEnd}.'
+        : 'ClusterIntegration|To create a cluster, first create a project on %{docsLinkStart}Google Cloud Platform%{docsLinkEnd}.';
+
+      return sprintf(
+        s__(message),
+        {
+          docsLinkEnd: '&nbsp;<i class="fa fa-external-link" aria-hidden="true"></i></a>',
+          docsLinkStart: `<a href="${_.escape(
+            this.docsUrl,
+          )}" target="_blank" rel="noopener noreferrer">`,
+        },
+        false,
+      );
+    },
+  },
+  created() {
+    this.fetchItems();
+  },
+  methods: {
+    ...mapActions(['setProject']),
+    fetchItems() {
+      const request = this.service.projects.list();
+
+      return request.then(
+        resp => {
+          this.items = resp.result.projects;
+
+          // Cause error
+          // this.items = data;
+
+          // Single state
+          // this.items = [
+          //   {
+          //     create_time: '2018-01-16T15:55:02.992Z',
+          //     lifecycle_state: 'ACTIVE',
+          //     name: 'NaturalInterface',
+          //     item_id: 'naturalinterface-192315',
+          //     item_number: 840816084083,
+          //   },
+          // ];
+
+          if (this.items.length === 1) {
+            this.isDisabled = true;
+            this.setProject(this.items[0].name);
+          }
+
+          this.isLoading = false;
+        },
+        resp => {
+          this.isLoading = false;
+          this.hasErrors = true;
+
+          if (resp.result.error) {
+            Flash(
+              `${s__('ClusterIntegration|An error occured while trying to fetch your projects:')} ${
+                resp.result.error.message
+              }`,
+            );
+          }
+        },
+        this,
+      );
+    },
+  },
+};
+</script>
+
+<template>
+  <div>
+    <div
+      class="dropdown"
+      :class="{ 'gl-show-field-errors': hasErrors }"
+    >
+      <dropdown-hidden-input
+        :name="fieldName"
+        :value="$store.state.selectedProject"
+      />
+      <dropdown-button
+        :class="{ 'gl-field-error-outline': hasErrors }"
+        :is-disabled="isDisabled"
+        :is-loading="isLoading"
+        :toggle-text="toggleText"
+      />
+      <div class="dropdown-menu dropdown-select">
+        <dropdown-search-input
+          v-model="searchQuery"
+          :placeholder-text="placeholderText"
+        />
+        <div class="dropdown-content">
+          <ul>
+            <li
+              v-for="result in results"
+              :key="result.project_number"
+            >
+              <a
+                href="#"
+                @click.prevent="setProject(result.name)"
+              >{{ result.name }}</a>
+            </li>
+          </ul>
+        </div>
+        <div class="dropdown-loading">
+          <loading-icon />
+        </div>
+      </div>
+    </div>
+    <span
+      class="help-block"
+      :class="{ 'gl-field-error-message': hasErrors }"
+      v-html="helpText"
+    ></span>
+  </div>
+</template>

app/assets/javascripts/projects/gke_cluster_dropdowns/components/gke_zone_dropdown.vue

+<script>
+import Flash from '~/flash';
+import { s__ } from '~/locale';
+import { mapActions } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import LoadingIcon from '~/vue_shared/components/loading_icon.vue';
+import DropdownSearchInput from '~/vue_shared/components/dropdown/dropdown_search_input.vue';
+import DropdownHiddenInput from '~/vue_shared/components/dropdown/dropdown_hidden_input.vue';
+
+import eventHub from '../eventhub';
+import store from '../stores';
+import DropdownButton from './dropdown_button.vue';
+// TODO: Fall back to default us-central1-a or first option
+
+export default {
+  name: 'GkeZoneDropdown',
+  store,
+  components: {
+    Icon,
+    LoadingIcon,
+    DropdownButton,
+    DropdownSearchInput,
+    DropdownHiddenInput,
+  },
+  props: {
+    service: {
+      type: Object,
+      required: true,
+    },
+    fieldId: {
+      type: String,
+      required: true,
+    },
+    fieldName: {
+      type: String,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      isLoading: false,
+      hasErrors: false,
+      searchQuery: '',
+      selectedItem: '',
+      items: [],
+    };
+  },
+  computed: {
+    isDisabled() {
+      return this.$store.state.selectedProject.length === 0;
+    },
+    results() {
+      return this.items.filter(item => item.name.toLowerCase().indexOf(this.searchQuery) > -1);
+    },
+    toggleText() {
+      if (this.$store.state.selectedZone) {
+        return this.$store.state.selectedZone;
+      }
+
+      if (this.isLoading) {
+        return s__('ClusterIntegration|Fetching zones');
+      }
+
+      return this.$store.state.selectedProject
+        ? s__('ClusterIntegration|Select zone')
+        : s__('ClusterIntegration|Select project to choose zone');
+    },
+    placeholderText() {
+      return s__('ClusterIntegration|Search zones');
+    },
+  },
+  created() {
+    eventHub.$on('projectSelected', this.fetchItems);
+  },
+  methods: {
+    ...mapActions(['setZone']),
+    fetchItems() {
+      this.isLoading = true;
+      const request = this.service.zones.list({ project: this.$store.state.selectedProject });
+
+      return request.then(
+        resp => {
+          this.items = resp.result.items;
+
+          // Cause error
+          // this.items = data;
+
+          // Single state
+          // this.items = [
+          //   {
+          //     create_time: '2018-01-16T15:55:02.992Z',
+          //     lifecycle_state: 'ACTIVE',
+          //     name: 'NaturalInterface',
+          //     item_id: 'naturalinterface-192315',
+          //     item_number: 840816084083,
+          //   },
+          // ];
+
+          if (this.items.length === 1) {
+            this.isDisabled = true;
+            this.setZone(this.items[0].name);
+          }
+
+          this.isLoading = false;
+        },
+        resp => {
+          this.isLoading = false;
+          this.hasErrors = true;
+
+          if (resp.result.error) {
+            Flash(
+              `${s__('ClusterIntegration|An error occured while trying to fetch project zones:')} ${
+                resp.result.error.message
+              }`,
+            );
+          }
+        },
+        this,
+      );
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    class="dropdown"
+    :class="{ 'gl-show-field-errors': hasErrors }"
+  >
+    <dropdown-hidden-input
+      :name="fieldName"
+      :value="$store.state.selectedProject"
+    />
+    <dropdown-button
+      :class="{ 'gl-field-error-outline': hasErrors }"
+      :is-disabled="isDisabled"
+      :is-loading="isLoading"
+      :toggle-text="toggleText"
+    />
+    <div class="dropdown-menu dropdown-select">
+      <dropdown-search-input
+        v-model="searchQuery"
+        :placeholder-text="placeholderText"
+      />
+      <div class="dropdown-content">
+        <ul>
+          <li
+            v-for="result in results"
+            :key="result.id"
+          >
+            <a
+              href="#"
+              @click.prevent="setZone(result.name)"
+            >{{ result.name }}</a>
+          </li>
+        </ul>
+      </div>
+      <div class="dropdown-loading">
+        <loading-icon />
+      </div>
+    </div>
+  </div>
+</template>

app/assets/javascripts/projects/gke_cluster_dropdowns/eventhub.js

+import Vue from 'vue';
+
+export default new Vue();

app/assets/javascripts/projects/gke_cluster_dropdowns/stores/actions.js

+import * as types from './mutation_types';
+import eventHub from '../eventhub';
+
+export const setProject = ({ commit }, selectedProject) => {
+  commit(types.SET_PROJECT, selectedProject);
+
+  eventHub.$emit('projectSelected');
+};
+
+export const setZone = ({ commit }, selectedZone) => {
+  commit(types.SET_ZONE, selectedZone);
+
+  eventHub.$emit('zoneSelected');
+};
+
+export const setMachineType = ({ commit }, selectedMachineType) => {
+  commit(types.SET_MACHINE_TYPE, selectedMachineType);
+
+  eventHub.$emit('machineTypeSelected');
+};

app/assets/javascripts/projects/gke_cluster_dropdowns/stores/index.js

+import Vue from 'vue';
+import Vuex from 'vuex';
+import * as actions from './actions';
+import * as getters from './getters';
+import mutations from './mutations';
+
+Vue.use(Vuex);
+
+export default new Vuex.Store({
+  actions,
+  getters,
+  mutations,
+  state: {
+    selectedProject: '',
+    selectedZone: '',
+    selectedMachineType: '',
+  },
+});

app/assets/javascripts/projects/gke_cluster_dropdowns/stores/mutation_types.js

+export const SET_PROJECT = 'SET_PROJECT';
+export const SET_ZONE = 'SET_ZONE';
+export const SET_MACHINE_TYPE = 'SET_MACHINE_TYPE';

app/assets/javascripts/projects/gke_cluster_dropdowns/stores/mutations.js

+import * as types from './mutation_types';
+
+export default {
+  [types.SET_PROJECT](state, selectedProject) {
+    Object.assign(state, { selectedProject });
+  },
+  [types.SET_ZONE](state, selectedZone) {
+    Object.assign(state, { selectedZone });
+  },
+  [types.SET_MACHINE_TYPE](state, selectedMachineType) {
+    Object.assign(state, { selectedMachineType });
+  },
+};

app/assets/javascripts/vue_shared/components/dropdown/dropdown_hidden_input.vue

+<script>
+export default {
+  props: {
+    name: {
+      type: String,
+      required: true,
+    },
+    value: {
+      type: String,
+      required: true,
+    },
+  },
+};
+</script>
+
+<template>
+  <input
+    type="hidden"
+    :name="name"
+    :value="value"
+  />
+</template>

app/assets/javascripts/vue_shared/components/dropdown/dropdown_search_input.vue

+<script>
+import { __ } from '~/locale';
+
+export default {
+  props: {
+    searchQuery: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    placeholderText: {
+      type: String,
+      required: true,
+      default: __('Search'),
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="dropdown-input">
+    <input
+      autocomplete="off"
+      class="dropdown-input-field"
+      type="search"
+      :placeholder="placeholderText"
+      :searchQuery="searchQuery"
+      @input="$emit('input', $event.target.value)"
+    />
+    <i
+      aria-hidden="true"
+      class="fa fa-search dropdown-input-search"
+      data-hidden="true"
+    >
+    </i>
+    <i
+      aria-hidden="true"
+      class="fa fa-times dropdown-input-clear js-dropdown-input-clear"
+      data-hidden="true"
+      role="button"
+    >
+    </i>
+  </div>
+</template>

app/assets/stylesheets/pages/clusters.scss

@@ -26,3 +26,16 @@
     margin-right: 0;
   }
 }
+
+#new_cluster {
+  .dropdown-menu-toggle {
+    .loading-container {
+      .fa {
+        position: relative;
+        margin-top: 2px;
+        top: initial;
+        right: initial;
+      }
+    }
+  }
+}

app/views/projects/clusters/gcp/_form.html.haml

+= javascript_include_tag 'https://apis.google.com/js/api.js'
+
 %p
   - link_to_help_page = link_to(s_('ClusterIntegration|help page'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
   = s_('ClusterIntegration|Read our %{link_to_help_page} on Kubernetes cluster integration.').html_safe % { link_to_help_page: link_to_help_page}
-= form_for @cluster, html: { class: 'prepend-top-20' }, url: gcp_namespace_project_clusters_path(@project.namespace, @project), as: :cluster do |field|
+= form_for @cluster, html: { class: 'prepend-top-20', data: { token: @token_in_session } }, url: gcp_namespace_project_clusters_path(@project.namespace, @project), as: :cluster do |field|
   = form_errors(@cluster)
   .form-group
     = field.label :name, s_('ClusterIntegration|Kubernetes cluster name')
@@ -14,13 +16,14 @@
   = field.fields_for :provider_gcp, @cluster.provider_gcp do |provider_gcp_field|
     .form-group
       = provider_gcp_field.label :gcp_project_id, s_('ClusterIntegration|Google Cloud Platform project ID')
-      = link_to(s_('ClusterIntegration|See your projects'), 'https://console.cloud.google.com/home/dashboard', target: '_blank', rel: 'noopener noreferrer')
-      = provider_gcp_field.text_field :gcp_project_id, class: 'form-control', placeholder: s_('ClusterIntegration|Project ID')
+      #js-gcp-project-id-dropdown-entry-point{ data: { docsUrl: 'https://console.cloud.google.com/home/dashboard' } }
+        = provider_gcp_field.hidden_field :gcp_project_id, class: 'form-control', placeholder: 'Select project'
     .form-group
       = provider_gcp_field.label :zone, s_('ClusterIntegration|Zone')
       = link_to(s_('ClusterIntegration|See zones'), 'https://cloud.google.com/compute/docs/regions-zones/regions-zones', target: '_blank', rel: 'noopener noreferrer')
-      = provider_gcp_field.text_field :zone, class: 'form-control', placeholder: 'us-central1-a'
+      #js-gcp-zone-dropdown-entry-point
+        = provider_gcp_field.hidden_field :zone, class: 'form-control', placeholder: 'us-central1-a'
     .form-group
       = provider_gcp_field.label :num_nodes, s_('ClusterIntegration|Number of nodes')
@@ -28,8 +31,8 @@
     .form-group
       = provider_gcp_field.label :machine_type, s_('ClusterIntegration|Machine type')
-      = link_to(s_('ClusterIntegration|See machine types'), 'https://cloud.google.com/compute/docs/machine-types', target: '_blank', rel: 'noopener noreferrer')
-      = provider_gcp_field.text_field :machine_type, class: 'form-control', placeholder: 'n1-standard-4'
+      #js-gcp-machine-type-dropdown-entry-point
+        = provider_gcp_field.hidden_field :machine_type, class: 'form-control', placeholder: 'us-central1-a'
     .form-group
-      = field.submit s_('ClusterIntegration|Create Kubernetes cluster'), class: 'btn btn-success'
+      = field.submit s_('ClusterIntegration|Create Kubernetes cluster'), class: 'btn btn-success', disabled: true