Endpoints to enable and disable deploy keys

Resolves #20123

CHANGELOG

@@ -4,6 +4,7 @@ v 8.11.0 (unreleased)
   - Fix the title of the toggle dropdown button. !5515 (herminiotorres)
   - Improve diff performance by eliminating redundant checks for text blobs
   - Convert switch icon into icon font (ClemMakesApps)
+  - API: Endpoints for enabling and disabling deploy keys
   - Remove magic comments (`# encoding: UTF-8`) from Ruby files. !5456 (winniehell)
   - Add support for relative links starting with ./ or / to RelativeLinkFilter (winniehell)
   - Fix CI status icon link underline (ClemMakesApps)

doc/api/deploy_keys.md

@@ -159,3 +159,52 @@ Example response:
    "id" : 13
 }
 ```
+
+## Enable a deploy key
+
+Enables a deploy key for a project so this can be used. Returns the enabled key, with a status code 201 when successful.
+
+```
+curl -X POST -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/deploy_keys/13/enable
+```
+
+| Attribute | Type | Required | Description |
+| --------- | ---- | -------- | ----------- |
+| `id`      | integer | yes | The ID of the project |
+| `key_id`  | integer | yes | The ID of the deploy key |
+
+Example response:
+
+```json
+```json
+{
+   "key" : "ssh-rsa AAAA...",
+   "id" : 12,
+   "title" : "My deploy key",
+   "created_at" : "2015-08-29T12:44:31.550Z"
+}
+```
+
+## Disable a deploy key
+
+Disable a deploy key for a project. Returns the disabled key.
+
+```
+curl -X DELETE -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/deploy_keys/13/disable
+```
+
+| Attribute | Type | Required | Description |
+| --------- | ---- | -------- | ----------- |
+| `id`      | integer | yes | The ID of the project |
+| `key_id`  | integer | yes | The ID of the deploy key |
+
+Example response:
+
+```json
+{
+   "key" : "ssh-rsa AAAA...",
+   "id" : 12,
+   "title" : "My deploy key",
+   "created_at" : "2015-08-29T12:44:31.550Z"
+}
+```

lib/api/deploy_keys.rb

@@ -74,6 +74,37 @@ module API
           end
         end
 
+        desc 'Enable a deploy key for a project' do
+          detail 'This feature was added in GitLab 8.11'
+          success Entities::SSHKey
+        end
+        params do
+          requires :key_id, type: Integer, desc: 'The ID of the deploy key'
+        end
+        post ":id/#{path}/:key_id/enable" do
+          key = DeployKey.find(params[:key_id])
+
+          if user_project.deploy_keys << key
+            present key, with: Entities::SSHKey
+          else
+            render_validation_error!(key)
+          end
+        end
+
+        desc 'Disable a deploy key for a project' do
+          detail 'This feature was added in GitLab 8.11'
+          success Entities::SSHKey
+        end
+        params do
+          requires :key_id, type: Integer, desc: 'The ID of the deploy key'
+        end
+        delete ":id/#{path}/:key_id/disable" do
+          key = user_project.deploy_keys_projects.find_by(deploy_key_id: params[:key_id])
+          key.destroy
+
+          present key.deploy_key, with: Entities::SSHKey
+        end
+
         # Delete existing deploy key of currently authenticated user
         #
         # Example Request:

spec/requests/api/deploy_keys.rb → spec/requests/api/deploy_keys_spec.rb

@@ -4,16 +4,16 @@ describe API::API, api: true  do
   include ApiHelpers
 
   let(:user)    { create(:user) }
+  let(:admin)   { create(:admin) }
   let(:project) { create(:project, creator_id: user.id) }
   let!(:deploy_keys_project) { create(:deploy_keys_project, project: project) }
-  let(:admin) { create(:admin) }
+  let(:deploy_key)  { deploy_keys_project.deploy_key }
 
   describe 'GET /deploy_keys' do
-    before { admin }
-
     context 'when unauthenticated' do
       it 'should return authentication error' do
         get api('/deploy_keys')
+
         expect(response.status).to eq(401)
       end
     end
@@ -21,18 +21,64 @@ describe API::API, api: true  do
     context 'when authenticated as non-admin user' do
       it 'should return a 403 error' do
         get api('/deploy_keys', user)
+
         expect(response.status).to eq(403)
       end
     end
 
     context 'when authenticated as admin' do
+
       it 'should return all deploy keys' do
         get api('/deploy_keys', admin)
-        expect(response.status).to eq(200)
 
+        expect(response.status).to eq(200)
         expect(json_response).to be_an Array
         expect(json_response.first['id']).to eq(deploy_keys_project.deploy_key.id)
       end
     end
   end
+
+  describe 'POST /projects/:id/deploy_keys/:key_id/enable' do
+    let(:project2) { create(:empty_project) }
+
+    context 'when the user can admin the project' do
+      it 'enables the key' do
+        expect do
+          post api("/projects/#{project2.id}/deploy_keys/#{deploy_key.id}/enable", admin)
+        end.to change { project2.deploy_keys.count }.from(0).to(1)
+
+        expect(response).to have_http_status(201)
+        expect(json_response['id']).to eq(deploy_key.id)
+      end
+    end
+
+    context 'when authenticated as non-admin user' do
+      it 'should return a 404 error' do
+        post api("/projects/#{project2.id}/deploy_keys/#{deploy_key.id}/enable", user)
+
+        expect(response).to have_http_status(404)
+      end
+    end
+  end
+
+  describe 'DELETE /projects/:id/deploy_keys/:key_id/disable' do
+    context 'when the user can admin the project' do
+      it 'disables the key' do
+        expect do
+          delete api("/projects/#{project.id}/deploy_keys/#{deploy_key.id}/disable", admin)
+        end.to change { project.deploy_keys.count }.from(1).to(0)
+
+        expect(response).to have_http_status(200)
+        expect(json_response['id']).to eq(deploy_key.id)
+      end
+    end
+
+    context 'when authenticated as non-admin user' do
+      it 'should return a 404 error' do
+        delete api("/projects/#{project.id}/deploy_keys/#{deploy_key.id}/disable", user)
+
+        expect(response).to have_http_status(404)
+      end
+    end
+  end
 end