http/job: adding job query endpoint

command/agent/job_endpoint.go

@@ -83,7 +83,23 @@ func (s *HTTPServer) jobCRUD(resp http.ResponseWriter, req *http.Request,
 
 func (s *HTTPServer) jobQuery(resp http.ResponseWriter, req *http.Request,
 	jobName string) (interface{}, error) {
-	return nil, nil
+	args := structs.JobSpecificRequest{
+		JobID: jobName,
+	}
+	if s.parse(resp, req, &args.Region, &args.QueryOptions) {
+		return nil, nil
+	}
+
+	var out structs.SingleJobResponse
+	if err := s.agent.RPC("Job.GetJob", &args, &out); err != nil {
+		return nil, err
+	}
+
+	setMeta(resp, &out.QueryMeta)
+	if out.Job == nil {
+		return nil, CodedError(404, "job not found")
+	}
+	return out.Job, nil
 }
 
 func (s *HTTPServer) jobUpdate(resp http.ResponseWriter, req *http.Request,
@@ -102,5 +118,6 @@ func (s *HTTPServer) jobDelete(resp http.ResponseWriter, req *http.Request,
 	if err := s.agent.RPC("Job.Deregister", &args, &out); err != nil {
 		return nil, err
 	}
+	setIndex(resp, out.Index)
 	return out, nil
 }

command/agent/job_endpoint_test.go

@@ -9,6 +9,51 @@ import (
 	"github.com/hashicorp/nomad/nomad/structs"
 )
 
+func TestHTTP_JobQuery(t *testing.T) {
+	httpTest(t, nil, func(s *TestServer) {
+		// Create the job
+		job := mock.Job()
+		args := structs.JobRegisterRequest{
+			Job:          job,
+			WriteRequest: structs.WriteRequest{Region: "region1"},
+		}
+		var resp structs.JobRegisterResponse
+		if err := s.Agent.RPC("Job.Register", &args, &resp); err != nil {
+			t.Fatalf("err: %v", err)
+		}
+
+		// Make the HTTP request
+		req, err := http.NewRequest("GET", "/v1/job/"+job.ID, nil)
+		if err != nil {
+			t.Fatalf("err: %v", err)
+		}
+		respW := httptest.NewRecorder()
+
+		// Make the request
+		obj, err := s.Server.JobSpecificRequest(respW, req)
+		if err != nil {
+			t.Fatalf("err: %v", err)
+		}
+
+		// Check for the index
+		if respW.HeaderMap.Get("X-Nomad-Index") == "" {
+			t.Fatalf("missing index")
+		}
+		if respW.HeaderMap.Get("X-Nomad-KnownLeader") != "true" {
+			t.Fatalf("missing known leader")
+		}
+		if respW.HeaderMap.Get("X-Nomad-LastContact") == "" {
+			t.Fatalf("missing last contact")
+		}
+
+		// Check the job
+		j := obj.(*structs.Job)
+		if j.ID != job.ID {
+			t.Fatalf("bad: %#v", j)
+		}
+	})
+}
+
 func TestHTTP_JobDelete(t *testing.T) {
 	httpTest(t, nil, func(s *TestServer) {
 		// Create the job
@@ -41,6 +86,11 @@ func TestHTTP_JobDelete(t *testing.T) {
 			t.Fatalf("bad: %v", dereg)
 		}
 
+		// Check for the index
+		if respW.HeaderMap.Get("X-Nomad-Index") == "" {
+			t.Fatalf("missing index")
+		}
+
 		// Check the job is gone
 		getReq := structs.JobSpecificRequest{
 			JobID:        job.ID,