webhook_test.go

Documentation: github.com/prometheus/alertmanager/notify/webhook

     1  // Copyright 2019 Prometheus Team
     2  // Licensed under the Apache License, Version 2.0 (the "License");
     3  // you may not use this file except in compliance with the License.
     4  // You may obtain a copy of the License at
     5  //
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package webhook
    15  
    16  import (
    17  	"bytes"
    18  	"fmt"
    19  	"io"
    20  	"net/http"
    21  	"net/url"
    22  	"testing"
    23  
    24  	"github.com/go-kit/log"
    25  	commoncfg "github.com/prometheus/common/config"
    26  	"github.com/stretchr/testify/require"
    27  
    28  	"github.com/prometheus/alertmanager/config"
    29  	"github.com/prometheus/alertmanager/notify/test"
    30  	"github.com/prometheus/alertmanager/types"
    31  )
    32  
    33  func TestWebhookRetry(t *testing.T) {
    34  	u, err := url.Parse("http://example.com")
    35  	if err != nil {
    36  		require.NoError(t, err)
    37  	}
    38  	notifier, err := New(
    39  		&config.WebhookConfig{
    40  			URL:        &config.URL{URL: u},
    41  			HTTPConfig: &commoncfg.HTTPClientConfig{},
    42  		},
    43  		test.CreateTmpl(t),
    44  		log.NewNopLogger(),
    45  	)
    46  	if err != nil {
    47  		require.NoError(t, err)
    48  	}
    49  
    50  	t.Run("test retry status code", func(t *testing.T) {
    51  		for statusCode, expected := range test.RetryTests(test.DefaultRetryCodes()) {
    52  			actual, _ := notifier.retrier.Check(statusCode, nil)
    53  			require.Equal(t, expected, actual, fmt.Sprintf("error on status %d", statusCode))
    54  		}
    55  	})
    56  
    57  	t.Run("test retry error details", func(t *testing.T) {
    58  		for _, tc := range []struct {
    59  			status int
    60  			body   io.Reader
    61  
    62  			exp string
    63  		}{
    64  			{
    65  				status: http.StatusBadRequest,
    66  				body: bytes.NewBuffer([]byte(
    67  					`{"status":"invalid event"}`,
    68  				)),
    69  
    70  				exp: fmt.Sprintf(`unexpected status code %d: %s: {"status":"invalid event"}`, http.StatusBadRequest, u.String()),
    71  			},
    72  			{
    73  				status: http.StatusBadRequest,
    74  
    75  				exp: fmt.Sprintf(`unexpected status code %d: %s`, http.StatusBadRequest, u.String()),
    76  			},
    77  		} {
    78  			t.Run("", func(t *testing.T) {
    79  				_, err = notifier.retrier.Check(tc.status, tc.body)
    80  				require.Equal(t, tc.exp, err.Error())
    81  			})
    82  		}
    83  	})
    84  }
    85  
    86  func TestWebhookTruncateAlerts(t *testing.T) {
    87  	alerts := make([]*types.Alert, 10)
    88  
    89  	truncatedAlerts, numTruncated := truncateAlerts(0, alerts)
    90  	require.Len(t, truncatedAlerts, 10)
    91  	require.EqualValues(t, numTruncated, 0)
    92  
    93  	truncatedAlerts, numTruncated = truncateAlerts(4, alerts)
    94  	require.Len(t, truncatedAlerts, 4)
    95  	require.EqualValues(t, numTruncated, 6)
    96  
    97  	truncatedAlerts, numTruncated = truncateAlerts(100, alerts)
    98  	require.Len(t, truncatedAlerts, 10)
    99  	require.EqualValues(t, numTruncated, 0)
   100  }
   101
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