a6d37fa14c
We create a custom histogram metric that logs the userID when the observed value is greater or equal to the last bucket value. This allows us to start tracking the slowest users of a system while at the same time not polluting the Prometheus metrics by storing a userID for every observation. https://mattermost.atlassian.net/browse/MM-61887 ```release-note NONE ```
56 строки
1.5 KiB
Go
56 строки
1.5 KiB
Go
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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package testlib
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import (
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"encoding/json"
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"io"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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// AssertLog asserts that a JSON-encoded buffer of logs contains one with the given level and message.
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func AssertLog(t *testing.T, logs io.Reader, level, message string) {
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t.Helper()
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if !hasMsg(t, logs, level, message) {
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assert.Failf(t, "failed to find", "Expected log_level: %s, log_message: %s", level, message)
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}
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}
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// AssertNoLog asserts that a JSON-encoded buffer of logs does not contains one with the given level and message.
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func AssertNoLog(t *testing.T, logs io.Reader, level, message string) {
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t.Helper()
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if hasMsg(t, logs, level, message) {
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assert.Failf(t, "found", "Not expected log_level: %s log_message: %s", level, message)
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}
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}
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// CheckLog checks whether a JSON-encoded buffer of logs contain the given
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// message at the level or not.
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func CheckLog(t *testing.T, logs io.Reader, level, message string) bool {
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return hasMsg(t, logs, level, message)
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}
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func hasMsg(t *testing.T, logs io.Reader, level, message string) bool {
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dec := json.NewDecoder(logs)
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for {
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var log struct {
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Level string
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Msg string
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}
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if err := dec.Decode(&log); err == io.EOF {
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break
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} else if err != nil {
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t.Logf("Error decoding log entry: %s", err)
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continue
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}
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if log.Level == level && log.Msg == message {
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return true
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}
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}
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return false
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}
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