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cd412470d7
* Consider status code 429 as recoverable errors to avoid resharding. * Adds support for Retry-After in backoff logic in remote storage. Signed-off-by: Harkishen-Singh <harkishensingh@hotmail.com>
113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package remote
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import (
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"context"
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"net/http"
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"net/http/httptest"
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"net/url"
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"strings"
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"testing"
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"time"
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"github.com/pkg/errors"
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config_util "github.com/prometheus/common/config"
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"github.com/prometheus/common/model"
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"github.com/stretchr/testify/require"
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)
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var longErrMessage = strings.Repeat("error message", maxErrMsgLen)
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func TestStoreHTTPErrorHandling(t *testing.T) {
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tests := []struct {
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code int
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err error
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}{
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{
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code: 200,
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err: nil,
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},
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{
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code: 300,
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err: errors.New("server returned HTTP status 300 Multiple Choices: " + longErrMessage[:maxErrMsgLen]),
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},
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{
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code: 404,
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err: errors.New("server returned HTTP status 404 Not Found: " + longErrMessage[:maxErrMsgLen]),
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},
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{
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code: 500,
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err: RecoverableError{errors.New("server returned HTTP status 500 Internal Server Error: " + longErrMessage[:maxErrMsgLen]), defaultBackoff},
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},
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}
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for _, test := range tests {
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server := httptest.NewServer(
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http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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http.Error(w, longErrMessage, test.code)
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}),
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)
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serverURL, err := url.Parse(server.URL)
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require.NoError(t, err)
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conf := &ClientConfig{
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URL: &config_util.URL{URL: serverURL},
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Timeout: model.Duration(time.Second),
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}
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hash, err := toHash(conf)
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require.NoError(t, err)
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c, err := NewWriteClient(hash, conf)
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require.NoError(t, err)
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err = c.Store(context.Background(), []byte{})
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if test.err != nil {
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require.EqualError(t, err, test.err.Error())
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} else {
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require.NoError(t, err)
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}
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server.Close()
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}
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}
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func TestRetryAfterDuration(t *testing.T) {
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tc := []struct {
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name string
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tInput string
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expected model.Duration
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}{
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{
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name: "seconds",
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tInput: "120",
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expected: model.Duration(time.Second * 120),
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},
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{
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name: "date-time default",
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tInput: time.RFC1123, // Expected layout is http.TimeFormat, hence an error.
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expected: defaultBackoff,
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},
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{
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name: "retry-after not provided",
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tInput: "", // Expected layout is http.TimeFormat, hence an error.
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expected: defaultBackoff,
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},
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}
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for _, c := range tc {
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require.Equal(t, c.expected, retryAfterDuration(c.tInput), c.name)
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}
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}
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