fix(nexus): add nexus repo names endpoint (#890)

gate-web/src/main/groovy/com/netflix/spinnaker/gate/controllers/NexusController.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Pivotal, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.netflix.spinnaker.gate.controllers;
+
+import com.netflix.spinnaker.gate.services.internal.IgorService;
+import io.swagger.annotations.ApiOperation;
+import java.util.List;
+import java.util.Optional;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/nexus")
+public class NexusController {
+
+  private Optional<IgorService> igorService;
+
+  @Autowired
+  public NexusController(Optional<IgorService> igorService) {
+    this.igorService = igorService;
+  }
+
+  @ApiOperation(
+      value = "Retrieve the list of nexus names available to triggers",
+      response = List.class)
+  @GetMapping(value = "/names")
+  List<String> names() {
+    return igorService.get().getNexusNames();
+  }
+}

gate-web/src/main/groovy/com/netflix/spinnaker/gate/services/internal/IgorService.groovy

@@ -55,6 +55,9 @@ interface IgorService {
   @GET('/artifactory/names')
   List<String> getArtifactoryNames()
 
+  @GET('/nexus/names')
+  List<String> getNexusNames()
+
   @GET('/concourse/{buildMaster}/teams')
   List<String> getConcourseTeams(@Path("buildMaster") String buildMaster)