/
metrics_test.go
141 lines (107 loc) · 3.7 KB
/
metrics_test.go
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package logr_test
import (
"bytes"
"testing"
"github.com/mattermost/logr/v2"
"github.com/mattermost/logr/v2/formatters"
"github.com/mattermost/logr/v2/targets"
"github.com/mattermost/logr/v2/test"
"github.com/stretchr/testify/require"
)
const (
TestTargetName = "test_target"
)
func TestLogr_SetMetricsCollector(t *testing.T) {
formatter := &formatters.Plain{DisableTimestamp: true, Delim: " | "}
filter := &logr.StdFilter{Lvl: logr.Info, Stacktrace: logr.Error}
t.Run("adding metrics should pass", func(t *testing.T) {
collector := test.NewTestMetricsCollector()
opt := logr.SetMetricsCollector(collector, 1000)
lgr, err := logr.New(opt)
require.NoError(t, err)
defer func() {
err := lgr.Shutdown()
require.NoError(t, err)
}()
// Create target
buf := &bytes.Buffer{}
tgt := targets.NewWriterTarget(buf)
err = lgr.AddTarget(tgt, TestTargetName, filter, formatter, 100)
require.NoError(t, err)
logger := lgr.NewLogger()
logger.Info("These go to eleven.")
logger.Info("Pay no attention to that man behind the curtain!")
err = lgr.Flush()
require.NoError(t, err)
metricsLogr := collector.Get("_logr")
metricsTarget := collector.Get(TestTargetName)
require.EqualValues(t, 2, metricsLogr.Logged)
require.EqualValues(t, 2, metricsTarget.Logged)
require.EqualValues(t, 0, metricsLogr.Errors)
require.EqualValues(t, 0, metricsTarget.Errors)
})
t.Run("adding nil metrics should fail", func(t *testing.T) {
opt := logr.SetMetricsCollector(nil, 1000)
lgr, err := logr.New(opt)
require.Error(t, err)
require.Nil(t, lgr)
})
t.Run("metrics with failing target", func(t *testing.T) {
collector := test.NewTestMetricsCollector()
opt := logr.SetMetricsCollector(collector, 1000)
lgr, err := logr.New(opt)
require.NoError(t, err)
defer func() {
err := lgr.Shutdown()
require.NoError(t, err)
}()
// Create target
tgt := test.NewFailingTarget()
err = lgr.AddTarget(tgt, TestTargetName, filter, formatter, 300)
require.NoError(t, err)
logger := lgr.NewLogger()
logger.Info("You're gonna need a bigger boat.")
logger.Info("I see dead people.")
err = lgr.Flush()
require.NoError(t, err)
metricsLogr := collector.Get("_logr")
metricsTarget := collector.Get(TestTargetName)
require.EqualValues(t, 2, metricsLogr.Logged)
require.EqualValues(t, 0, metricsTarget.Logged)
require.EqualValues(t, 2, metricsLogr.Errors)
require.EqualValues(t, 2, metricsTarget.Errors)
})
t.Run("metrics with multiple targets", func(t *testing.T) {
collector := test.NewTestMetricsCollector()
opt := logr.SetMetricsCollector(collector, 1000)
lgr, err := logr.New(opt)
require.NoError(t, err)
defer func() {
err := lgr.Shutdown()
require.NoError(t, err)
}()
// Create targets
buf1 := &bytes.Buffer{}
buf2 := &bytes.Buffer{}
tgt1 := targets.NewWriterTarget(buf1)
tgt2 := targets.NewWriterTarget(buf2)
err = lgr.AddTarget(tgt1, TestTargetName+"1", filter, formatter, 100)
require.NoError(t, err)
err = lgr.AddTarget(tgt2, TestTargetName+"2", filter, formatter, 300)
require.NoError(t, err)
logger := lgr.NewLogger()
logger.Info("What we've got here is a failure to communicate.")
logger.Info("I love the smell of napalm in the morning.")
err = lgr.Flush()
require.NoError(t, err)
metricsLogr := collector.Get("_logr")
metricsTarget1 := collector.Get(TestTargetName + "1")
metricsTarget2 := collector.Get(TestTargetName + "2")
require.EqualValues(t, 2, metricsLogr.Logged)
require.EqualValues(t, 2, metricsTarget1.Logged)
require.EqualValues(t, 2, metricsTarget2.Logged)
require.EqualValues(t, 0, metricsLogr.Errors)
require.EqualValues(t, 0, metricsTarget1.Errors)
require.EqualValues(t, 0, metricsTarget2.Errors)
})
}