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udf_test.go
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udf_test.go
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package kapacitor_test
import (
"bytes"
"fmt"
"io"
"log"
"os"
"reflect"
"testing"
"time"
"github.com/influxdata/kapacitor"
"github.com/influxdata/kapacitor/command"
"github.com/influxdata/kapacitor/models"
"github.com/influxdata/kapacitor/udf"
"github.com/influxdata/kapacitor/udf/agent"
udf_test "github.com/influxdata/kapacitor/udf/test"
)
func newUDFSocket(name string) (*kapacitor.UDFSocket, *udf_test.IO) {
uio := udf_test.NewIO()
l := log.New(os.Stderr, fmt.Sprintf("[%s] ", name), log.LstdFlags)
u := kapacitor.NewUDFSocket(newTestSocket(uio), l, 0, nil)
return u, uio
}
func newUDFProcess(name string) (*kapacitor.UDFProcess, *udf_test.IO) {
uio := udf_test.NewIO()
cmd := newTestCommander(uio)
l := log.New(os.Stderr, fmt.Sprintf("[%s] ", name), log.LstdFlags)
u := kapacitor.NewUDFProcess(cmd, command.Spec{}, l, 0, nil)
return u, uio
}
func TestUDFSocket_OpenClose(t *testing.T) {
u, uio := newUDFSocket("OpenClose")
testUDF_OpenClose(u, uio, t)
}
func TestUDFProcess_OpenClose(t *testing.T) {
u, uio := newUDFProcess("OpenClose")
testUDF_OpenClose(u, uio, t)
}
func testUDF_OpenClose(u udf.Interface, uio *udf_test.IO, t *testing.T) {
u.Open()
close(uio.Responses)
u.Close()
// read all requests and wait till the chan is closed
for range uio.Requests {
}
if err := <-uio.ErrC; err != nil {
t.Error(err)
}
}
func TestUDFSocket_WritePoint(t *testing.T) {
u, uio := newUDFSocket("WritePoint")
testUDF_WritePoint(u, uio, t)
}
func TestUDFProcess_WritePoint(t *testing.T) {
u, uio := newUDFProcess("WritePoint")
testUDF_WritePoint(u, uio, t)
}
func testUDF_WritePoint(u udf.Interface, uio *udf_test.IO, t *testing.T) {
go func() {
req := <-uio.Requests
_, ok := req.Message.(*agent.Request_Init)
if !ok {
t.Errorf("expected init message got %T", req.Message)
}
res := &agent.Response{
Message: &agent.Response_Init{
Init: &agent.InitResponse{
Success: true,
},
},
}
uio.Responses <- res
req = <-uio.Requests
pt, ok := req.Message.(*agent.Request_Point)
if !ok {
t.Errorf("expected point message got %T", req.Message)
}
res = &agent.Response{
Message: &agent.Response_Point{
Point: pt.Point,
},
}
uio.Responses <- res
close(uio.Responses)
}()
err := u.Open()
if err != nil {
t.Fatal(err)
}
err = u.Init(nil)
if err != nil {
t.Fatal(err)
}
// Write point to server
pt := models.Point{
Name: "test",
Database: "db",
RetentionPolicy: "rp",
Tags: models.Tags{"t1": "v1", "t2": "v2"},
Fields: models.Fields{"f1": 1.0, "f2": 2.0},
Time: time.Date(1971, 1, 1, 0, 0, 0, 0, time.UTC),
}
u.PointIn() <- pt
rpt := <-u.PointOut()
if !reflect.DeepEqual(rpt, pt) {
t.Errorf("unexpected returned point got: %v exp %v", rpt, pt)
}
u.Close()
// read all requests and wait till the chan is closed
for range uio.Requests {
}
if err := <-uio.ErrC; err != nil {
t.Error(err)
}
}
func TestUDFSocket_WriteBatch(t *testing.T) {
u, uio := newUDFSocket("WriteBatch")
testUDF_WriteBatch(u, uio, t)
}
func TestUDFProcess_WriteBatch(t *testing.T) {
u, uio := newUDFProcess("WriteBatch")
testUDF_WriteBatch(u, uio, t)
}
func testUDF_WriteBatch(u udf.Interface, uio *udf_test.IO, t *testing.T) {
go func() {
req := <-uio.Requests
_, ok := req.Message.(*agent.Request_Init)
if !ok {
t.Errorf("expected init message got %T", req.Message)
}
res := &agent.Response{
Message: &agent.Response_Init{
Init: &agent.InitResponse{
Success: true,
},
},
}
uio.Responses <- res
// Begin batch
req = <-uio.Requests
bb, ok := req.Message.(*agent.Request_Begin)
if !ok {
t.Errorf("expected begin message got %T", req.Message)
}
res = &agent.Response{
Message: &agent.Response_Begin{
Begin: bb.Begin,
},
}
uio.Responses <- res
// Point
req = <-uio.Requests
pt, ok := req.Message.(*agent.Request_Point)
if !ok {
t.Errorf("expected point message got %T", req.Message)
}
res = &agent.Response{
Message: &agent.Response_Point{
Point: pt.Point,
},
}
uio.Responses <- res
// End batch
req = <-uio.Requests
eb, ok := req.Message.(*agent.Request_End)
if !ok {
t.Errorf("expected end message got %T", req.Message)
}
res = &agent.Response{
Message: &agent.Response_End{
End: eb.End,
},
}
uio.Responses <- res
close(uio.Responses)
}()
err := u.Open()
if err != nil {
t.Fatal(err)
}
err = u.Init(nil)
if err != nil {
t.Fatal(err)
}
// Write point to server
b := models.Batch{
Name: "test",
Tags: models.Tags{"t1": "v1"},
TMax: time.Date(1971, 1, 1, 0, 0, 0, 0, time.UTC),
Points: []models.BatchPoint{{
Fields: models.Fields{"f1": 1.0, "f2": 2.0, "f3": int64(1), "f4": "str"},
Time: time.Date(1971, 1, 1, 0, 0, 0, 0, time.UTC),
Tags: models.Tags{"t1": "v1", "t2": "v2"},
}},
}
u.BatchIn() <- b
rb := <-u.BatchOut()
if !reflect.DeepEqual(b, rb) {
t.Errorf("unexpected returned batch got: %v exp %v", rb, b)
}
u.Close()
// read all requests and wait till the chan is closed
for range uio.Requests {
}
if err := <-uio.ErrC; err != nil {
t.Error(err)
}
}
type testCommander struct {
uio *udf_test.IO
}
func newTestCommander(uio *udf_test.IO) command.Commander {
return &testCommander{
uio: uio,
}
}
func (c *testCommander) NewCommand(command.Spec) command.Command {
return c
}
func (c *testCommander) Start() error { return nil }
func (c *testCommander) Wait() error { return nil }
func (c *testCommander) Stdin(io.Reader) {}
func (c *testCommander) Stdout(io.Writer) {}
func (c *testCommander) Stderr(io.Writer) {}
func (c *testCommander) StdinPipe() (io.WriteCloser, error) {
return c.uio.In(), nil
}
func (c *testCommander) StdoutPipe() (io.Reader, error) {
return c.uio.Out(), nil
}
func (c *testCommander) StderrPipe() (io.Reader, error) {
return &bytes.Buffer{}, nil
}
func (c *testCommander) Kill() {
c.uio.Kill()
}
type testSocket struct {
uio *udf_test.IO
}
func newTestSocket(uio *udf_test.IO) kapacitor.Socket {
return &testSocket{
uio: uio,
}
}
func (s *testSocket) Open() error {
return nil
}
func (s *testSocket) Close() error {
return nil
}
func (s *testSocket) In() io.WriteCloser {
return s.uio.In()
}
func (s *testSocket) Out() io.Reader {
return s.uio.Out()
}