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pubsub_push_test.go
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pubsub_push_test.go
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package cloud_pubsub_push
import (
"context"
"fmt"
"io"
"net/http"
"net/http/httptest"
"strings"
"sync"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/agent"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/internal/models"
"github.com/influxdata/telegraf/plugins/parsers"
"github.com/influxdata/telegraf/testutil"
)
func TestServeHTTP(t *testing.T) {
tests := []struct {
name string
method string
path string
body io.Reader
status int
maxsize int64
expected string
fail bool
full bool
}{
{
name: "bad method get",
method: "GET",
path: "/",
status: http.StatusMethodNotAllowed,
},
{
name: "post not found",
method: "POST",
path: "/allthings",
status: http.StatusNotFound,
},
{
name: "post large date",
method: "POST",
path: "/",
status: http.StatusRequestEntityTooLarge,
body: strings.NewReader(`{"message":{"attributes":{"deviceId":"myPi","deviceNumId":"2808946627307959","deviceRegistryId":"my-registry","deviceRegistryLocation":"us-central1","projectId":"conference-demos","subFolder":""},"data":"dGVzdGluZ0dvb2dsZSxzZW5zb3I9Ym1lXzI4MCB0ZW1wX2M9MjMuOTUsaHVtaWRpdHk9NjIuODMgMTUzNjk1Mjk3NDU1MzUxMDIzMQ==","messageId":"204004313210337","message_id":"204004313210337","publishTime":"2018-09-14T19:22:54.587Z","publish_time":"2018-09-14T19:22:54.587Z"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
},
{
name: "post valid data",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusNoContent,
body: strings.NewReader(`{"message":{"attributes":{"deviceId":"myPi","deviceNumId":"2808946627307959","deviceRegistryId":"my-registry","deviceRegistryLocation":"us-central1","projectId":"conference-demos","subFolder":""},"data":"dGVzdGluZ0dvb2dsZSxzZW5zb3I9Ym1lXzI4MCB0ZW1wX2M9MjMuOTUsaHVtaWRpdHk9NjIuODMgMTUzNjk1Mjk3NDU1MzUxMDIzMQ==","messageId":"204004313210337","message_id":"204004313210337","publishTime":"2018-09-14T19:22:54.587Z","publish_time":"2018-09-14T19:22:54.587Z"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
},
{
name: "fail write",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusServiceUnavailable,
body: strings.NewReader(`{"message":{"attributes":{"deviceId":"myPi","deviceNumId":"2808946627307959","deviceRegistryId":"my-registry","deviceRegistryLocation":"us-central1","projectId":"conference-demos","subFolder":""},"data":"dGVzdGluZ0dvb2dsZSxzZW5zb3I9Ym1lXzI4MCB0ZW1wX2M9MjMuOTUsaHVtaWRpdHk9NjIuODMgMTUzNjk1Mjk3NDU1MzUxMDIzMQ==","messageId":"204004313210337","message_id":"204004313210337","publishTime":"2018-09-14T19:22:54.587Z","publish_time":"2018-09-14T19:22:54.587Z"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
fail: true,
},
{
name: "full buffer",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusServiceUnavailable,
body: strings.NewReader(`{"message":{"attributes":{"deviceId":"myPi","deviceNumId":"2808946627307959","deviceRegistryId":"my-registry","deviceRegistryLocation":"us-central1","projectId":"conference-demos","subFolder":""},"data":"dGVzdGluZ0dvb2dsZSxzZW5zb3I9Ym1lXzI4MCB0ZW1wX2M9MjMuOTUsaHVtaWRpdHk9NjIuODMgMTUzNjk1Mjk3NDU1MzUxMDIzMQ==","messageId":"204004313210337","message_id":"204004313210337","publishTime":"2018-09-14T19:22:54.587Z","publish_time":"2018-09-14T19:22:54.587Z"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
full: true,
},
{
name: "post invalid body",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusBadRequest,
body: strings.NewReader(`invalid body`),
},
{
name: "post invalid data",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusBadRequest,
body: strings.NewReader(`{"message":{"attributes":{"deviceId":"myPi","deviceNumId":"2808946627307959","deviceRegistryId":"my-registry","deviceRegistryLocation":"us-central1","projectId":"conference-demos","subFolder":""},"data":"not base 64 encoded data","messageId":"204004313210337","message_id":"204004313210337","publishTime":"2018-09-14T19:22:54.587Z","publish_time":"2018-09-14T19:22:54.587Z"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
},
{
name: "post invalid data format",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusBadRequest,
body: strings.NewReader(`{"message":{"attributes":{"deviceId":"myPi","deviceNumId":"2808946627307959","deviceRegistryId":"my-registry","deviceRegistryLocation":"us-central1","projectId":"conference-demos","subFolder":""},"data":"bm90IHZhbGlkIGZvcm1hdHRlZCBkYXRh","messageId":"204004313210337","message_id":"204004313210337","publishTime":"2018-09-14T19:22:54.587Z","publish_time":"2018-09-14T19:22:54.587Z"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
},
{
name: "post invalid structured body",
method: "POST",
path: "/",
maxsize: 500 * 1024 * 1024,
status: http.StatusBadRequest,
body: strings.NewReader(`{"message":{"attributes":{"thing":1},"data":"bm90IHZhbGlkIGZvcm1hdHRlZCBkYXRh"},"subscription":"projects/conference-demos/subscriptions/my-subscription"}`),
},
}
for _, test := range tests {
wg := &sync.WaitGroup{}
req, err := http.NewRequest(test.method, test.path, test.body)
require.NoError(t, err)
rr := httptest.NewRecorder()
pubPush := &PubSubPush{
Log: testutil.Logger{},
Path: "/",
MaxBodySize: internal.Size{
Size: test.maxsize,
},
sem: make(chan struct{}, 1),
undelivered: make(map[telegraf.TrackingID]chan bool),
mu: &sync.Mutex{},
WriteTimeout: internal.Duration{Duration: time.Second * 1},
}
pubPush.ctx, pubPush.cancel = context.WithCancel(context.Background())
if test.full {
// fill buffer with fake message
pubPush.sem <- struct{}{}
}
p, _ := parsers.NewParser(&parsers.Config{
MetricName: "cloud_pubsub_push",
DataFormat: "influx",
})
pubPush.SetParser(p)
dst := make(chan telegraf.Metric, 1)
ro := models.NewRunningOutput("test", &testOutput{failWrite: test.fail}, &models.OutputConfig{}, 1, 1)
pubPush.acc = agent.NewAccumulator(&testMetricMaker{}, dst).WithTracking(1)
wg.Add(1)
go func() {
defer wg.Done()
pubPush.receiveDelivered()
}()
wg.Add(1)
go func(status int, d chan telegraf.Metric) {
defer wg.Done()
for m := range d {
ro.AddMetric(m)
ro.Write()
}
}(test.status, dst)
ctx, cancel := context.WithTimeout(req.Context(), pubPush.WriteTimeout.Duration)
req = req.WithContext(ctx)
pubPush.ServeHTTP(rr, req)
require.Equal(t, test.status, rr.Code, test.name)
if test.expected != "" {
require.Equal(t, test.expected, rr.Body.String(), test.name)
}
pubPush.cancel()
cancel()
close(dst)
wg.Wait()
}
}
type testMetricMaker struct{}
func (tm *testMetricMaker) Name() string {
return "TestPlugin"
}
func (tm *testMetricMaker) LogName() string {
return tm.Name()
}
func (tm *testMetricMaker) MakeMetric(metric telegraf.Metric) telegraf.Metric {
return metric
}
type testOutput struct {
// if true, mock a write failure
failWrite bool
}
func (*testOutput) Connect() error {
return nil
}
func (*testOutput) Close() error {
return nil
}
func (*testOutput) Description() string {
return ""
}
func (*testOutput) SampleConfig() string {
return ""
}
func (t *testOutput) Write(metrics []telegraf.Metric) error {
if t.failWrite {
return fmt.Errorf("failed write")
}
return nil
}