prometheus/storage/remote/write_handler_test.go

139 lines
3.5 KiB
Go

// Copyright 2021 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package remote
import (
"bytes"
"context"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"testing"
"github.com/go-kit/kit/log"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/prompb"
"github.com/prometheus/prometheus/storage"
"github.com/stretchr/testify/require"
)
func TestRemoteWriteHandler(t *testing.T) {
buf, _, err := buildWriteRequest(writeRequestFixture.Timeseries, nil, nil)
require.NoError(t, err)
req, err := http.NewRequest("", "", bytes.NewReader(buf))
require.NoError(t, err)
appendable := &mockAppendable{}
handler := NewWriteHandler(nil, appendable)
recorder := httptest.NewRecorder()
handler.ServeHTTP(recorder, req)
resp := recorder.Result()
require.Equal(t, http.StatusNoContent, resp.StatusCode)
i := 0
for _, ts := range writeRequestFixture.Timeseries {
labels := labelProtosToLabels(ts.Labels)
for _, s := range ts.Samples {
require.Equal(t, mockSample{labels, s.Timestamp, s.Value}, appendable.samples[i])
i++
}
}
}
func TestOutOfOrder(t *testing.T) {
buf, _, err := buildWriteRequest([]prompb.TimeSeries{{
Labels: []prompb.Label{{Name: "__name__", Value: "test_metric"}},
Samples: []prompb.Sample{{Value: 1, Timestamp: 0}},
}}, nil, nil)
require.NoError(t, err)
req, err := http.NewRequest("", "", bytes.NewReader(buf))
require.NoError(t, err)
appendable := &mockAppendable{
latest: 100,
}
handler := NewWriteHandler(log.NewNopLogger(), appendable)
recorder := httptest.NewRecorder()
handler.ServeHTTP(recorder, req)
resp := recorder.Result()
require.Equal(t, http.StatusBadRequest, resp.StatusCode)
}
func TestCommitErr(t *testing.T) {
buf, _, err := buildWriteRequest(writeRequestFixture.Timeseries, nil, nil)
require.NoError(t, err)
req, err := http.NewRequest("", "", bytes.NewReader(buf))
require.NoError(t, err)
appendable := &mockAppendable{
commitErr: fmt.Errorf("commit error"),
}
handler := NewWriteHandler(log.NewNopLogger(), appendable)
recorder := httptest.NewRecorder()
handler.ServeHTTP(recorder, req)
resp := recorder.Result()
body, err := ioutil.ReadAll(resp.Body)
require.NoError(t, err)
require.Equal(t, http.StatusInternalServerError, resp.StatusCode)
require.Equal(t, "commit error\n", string(body))
}
type mockAppendable struct {
latest int64
samples []mockSample
commitErr error
}
type mockSample struct {
l labels.Labels
t int64
v float64
}
func (m *mockAppendable) Appender(_ context.Context) storage.Appender {
return m
}
func (m *mockAppendable) Add(l labels.Labels, t int64, v float64) (uint64, error) {
if t < m.latest {
return 0, storage.ErrOutOfOrderSample
}
m.latest = t
m.samples = append(m.samples, mockSample{l, t, v})
return 0, nil
}
func (m *mockAppendable) Commit() error {
return m.commitErr
}
func (*mockAppendable) AddFast(uint64, int64, float64) error {
return fmt.Errorf("not implemented")
}
func (*mockAppendable) Rollback() error {
return fmt.Errorf("not implemented")
}