forgejo/modules/cache/context_test.go
Jason Song 5b1990b3b2
Increase cacheContextLifetime to reduce false reports (#32011)
Replace #32001.

To prevent the context cache from being misused for long-term work
(which would result in using invalid cache without awareness), the
context cache is designed to exist for a maximum of 10 seconds. This
leads to many false reports, especially in the case of slow SQL.

This PR increases it to 5 minutes to reduce false reports.

5 minutes is not a very safe value, as a lot of changes may have
occurred within that time frame. However, as far as I know, there has
not been a case of misuse of context cache discovered so far, so I think
5 minutes should be OK.

Please note that after this PR, if warning logs are found again, it
should get attention, at that time it can be almost 100% certain that it
is a misuse.

(cherry picked from commit a323a82ec4bde6ae39b97200439829bf67c0d31e)
2024-09-14 17:09:03 +02:00

80 lines
1.9 KiB
Go

// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package cache
import (
"context"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestWithCacheContext(t *testing.T) {
ctx := WithCacheContext(context.Background())
v := GetContextData(ctx, "empty_field", "my_config1")
assert.Nil(t, v)
const field = "system_setting"
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v)
SetContextData(ctx, field, "my_config1", 1)
v = GetContextData(ctx, field, "my_config1")
assert.NotNil(t, v)
assert.EqualValues(t, 1, v.(int))
RemoveContextData(ctx, field, "my_config1")
RemoveContextData(ctx, field, "my_config2") // remove a non-exist key
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v)
vInt, err := GetWithContextCache(ctx, field, "my_config1", func() (int, error) {
return 1, nil
})
require.NoError(t, err)
assert.EqualValues(t, 1, vInt)
v = GetContextData(ctx, field, "my_config1")
assert.EqualValues(t, 1, v)
now := timeNow
defer func() {
timeNow = now
}()
timeNow = func() time.Time {
return now().Add(5 * time.Minute)
}
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v)
}
func TestWithNoCacheContext(t *testing.T) {
ctx := context.Background()
const field = "system_setting"
v := GetContextData(ctx, field, "my_config1")
assert.Nil(t, v)
SetContextData(ctx, field, "my_config1", 1)
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v) // still no cache
ctx = WithCacheContext(ctx)
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v)
SetContextData(ctx, field, "my_config1", 1)
v = GetContextData(ctx, field, "my_config1")
assert.NotNil(t, v)
ctx = WithNoCacheContext(ctx)
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v)
SetContextData(ctx, field, "my_config1", 1)
v = GetContextData(ctx, field, "my_config1")
assert.Nil(t, v) // still no cache
}