add a retrieve by e uuid api

Author: mcanoy

src/main/java/com/redhat/labs/lodestar/resource/EngagementResource.java

@@ -60,6 +60,17 @@ public Response createEngagement(Engagement engagement, @Context UriInfo uriInfo
         return Response.created(builder.build()).build();
 
     }
+    
+    @GET
+    @Path("uuid/{uuid}") 
+    public Response getEngagementByUuid(@PathParam("uuid") String uuid) {
+        Optional<Engagement> engagement = Optional.ofNullable(engagementService.getEnagementByUuid(uuid));
+        
+        if(engagement.isPresent()) {
+            return Response.ok(engagement).build();
+        }
+        return Response.noContent().status(404).entity(String.format("{ \"message\": \"Unable to find engagement for uuid %s in git-api\"}", uuid)).build();
+    }
 
     @GET
     @Counted(name = "get-all-engagement", description = "Count of get all engagements")
@@ -191,7 +202,7 @@ public Response getProjectByUuid(@PathParam("uuid") String uuid, @QueryParam("mi
         Optional<Project> p = engagementService.getProjectByUuid(uuid);
 
         if(p.isEmpty()) {
-            return Response.status(404).build();
+            return Response.status(404).entity("{ \"message\": \"Unable to get project by uuid\" }").build();
         }
 
         if(mini) {

src/main/java/com/redhat/labs/lodestar/service/EngagementService.java

@@ -272,6 +272,16 @@ private List<Engagement> getEngagementsFromProject(List<Project> projects, Optio
                 .collect(Collectors.toList());
 
     }
+    
+    public Engagement getEnagementByUuid(String uuid) {
+        Engagement engagement = null;
+        Optional<Project> project = getProjectByUuid(uuid);
+        if(project.isPresent()) {
+            engagement = getEngagement(project.get(), false, false).orElse(null);
+        }
+        
+        return engagement;
+    }
 
     public Engagement getEngagement(String namespaceOrId, boolean includeStatus) {
         Engagement engagement = null;

src/test/java/com/redhat/labs/lodestar/resource/EngagementResourceTest.java

@@ -108,9 +108,26 @@ void testGetAllEngagementsSuccess() {
                 + "    }\n" + "]"));
 
     }
+    
+    @Test
+    void testGetEngagementByUuid() {
+        MockUtils.setFindProjectByEngagementId(gitLabService, 2, "abcd", Project.builder().id(1).build());
+        MockUtils.setGetFileForEngagementJsonMock(gitLabService, 2, true);
+        
+        String engagementUuid = "k";
+
+        // Not found
+        given().pathParam("engagementUuid", engagementUuid).when().contentType(ContentType.JSON)
+                .get("/api/v1/engagements/uuid/{engagementUuid}").then().statusCode(404).body("message", is("Unable to find engagement for uuid k in git-api"));
+
+        engagementUuid = "abcd";
+        // Found
+        given().pathParam("engagementUuid", engagementUuid).when().contentType(ContentType.JSON)
+                .get("/api/v1/engagements/uuid/{engagementUuid}").then().statusCode(404);
+    }
 
     @Test
-    void tesetGetEngagementByNamespace() {
+    void testGetEngagementByNamespace() {
 
         // get projects by id
         Integer projectId = MockUtils.setGetProjectByPathMock(gitLabService, "top/dog/jello/tutti-frutti/iac", true,