/
handler.go
80 lines (70 loc) · 2.71 KB
/
handler.go
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// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package test
import (
"bytes"
"io"
"net/http"
"testing"
"time"
"github.com/m3db/m3/src/query/generated/proto/prompb"
"github.com/golang/protobuf/proto"
"github.com/golang/snappy"
)
// SlowHandler slows down a request by delay
type SlowHandler struct {
handler http.Handler
delay time.Duration
}
// NewSlowHandler creates a new slow handler
func NewSlowHandler(handler http.Handler, delay time.Duration) *SlowHandler {
return &SlowHandler{handler: handler, delay: delay}
}
// ServeHTTP implements http.handler
func (h *SlowHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
time.Sleep(h.delay)
h.handler.ServeHTTP(w, r)
}
// GeneratePromReadRequest generates a sample prometheus remote read request
func GeneratePromReadRequest() *prompb.ReadRequest {
req := &prompb.ReadRequest{
Queries: []*prompb.Query{{
Matchers: []*prompb.LabelMatcher{
{Type: prompb.LabelMatcher_EQ, Name: []byte("eq"), Value: []byte("a")},
},
StartTimestampMs: time.Now().Add(-1*time.Hour*24).UnixNano() / int64(time.Millisecond),
EndTimestampMs: time.Now().UnixNano() / int64(time.Millisecond),
}},
}
return req
}
// GeneratePromReadBody generates a sample snappy encoded prometheus remote read request body
func GeneratePromReadBody(t *testing.T) io.Reader {
req := GeneratePromReadRequest()
data, err := proto.Marshal(req)
if err != nil {
t.Fatal("couldn't marshal prometheus request")
}
compressed := snappy.Encode(nil, data)
// Uncomment the line below to write the data into a file useful for integration testing
//ioutil.WriteFile("/tmp/dat1", compressed, 0644)
b := bytes.NewReader(compressed)
return b
}