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1960ad5c90
Related to: #22294 #23186 #23054 Replace: #23218 Some discussion is in the comments of #23218. Highlights: - Add Expiration for cache context. If a cache context has been used for more than 10s, the cache data will be ignored, and warning logs will be printed. - Add `discard` field to `cacheContext`, a `cacheContext` with `discard` true will drop all cached data and won't store any new one. - Introduce `WithNoCacheContext`, if one wants to run long-life tasks, but the parent context is a cache context, `WithNoCacheContext(perentCtx)` will discard the cache data, so it will be safe to keep the context for a long time. - It will be fine to treat an original context as a cache context, like `GetContextData(context.Backgraud())`, no warning logs will be printed. Some cases about nesting: When: - *A*, *B* or *C* means a cache context. - ~*A*~, ~*B*~ or ~*C*~ means a discard cache context. - `ctx` means `context.Backgrand()` - *A(ctx)* means a cache context with `ctx` as the parent context. - *B(A(ctx))* means a cache context with `A(ctx)` as the parent context. - `With` means `WithCacheContext` - `WithNo` means `WithNoCacheContext` So: - `With(ctx)` -> *A(ctx)* - `With(With(ctx))` -> *A(ctx)*, not *B(A(ctx))* - `With(With(With(ctx)))` -> *A(ctx)*, not *C(B(A(ctx)))* - `WithNo(ctx)` -> *ctx*, not *~A~(ctx)* - `WithNo(With(ctx))` -> *~A~(ctx)* - `WithNo(WithNo(With(ctx)))` -> *~A~(ctx)*, not *~B~(~A~(ctx))* - `With(WithNo(With(ctx)))` -> *B(~A~(ctx))* - `WithNo(With(WithNo(With(ctx))))` -> *~B~(~A~(ctx))* - `With(WithNo(With(WithNo(With(ctx)))))` -> *C(~B~(~A~(ctx)))*
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package cache
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import (
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"context"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestWithCacheContext(t *testing.T) {
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ctx := WithCacheContext(context.Background())
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v := GetContextData(ctx, "empty_field", "my_config1")
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assert.Nil(t, v)
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const field = "system_setting"
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v)
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SetContextData(ctx, field, "my_config1", 1)
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v = GetContextData(ctx, field, "my_config1")
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assert.NotNil(t, v)
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assert.EqualValues(t, 1, v.(int))
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RemoveContextData(ctx, field, "my_config1")
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RemoveContextData(ctx, field, "my_config2") // remove a non-exist key
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v)
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vInt, err := GetWithContextCache(ctx, field, "my_config1", func() (int, error) {
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return 1, nil
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})
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assert.NoError(t, err)
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assert.EqualValues(t, 1, vInt)
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v = GetContextData(ctx, field, "my_config1")
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assert.EqualValues(t, 1, v)
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now := timeNow
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defer func() {
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timeNow = now
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}()
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timeNow = func() time.Time {
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return now().Add(10 * time.Second)
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}
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v)
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}
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func TestWithNoCacheContext(t *testing.T) {
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ctx := context.Background()
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const field = "system_setting"
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v := GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v)
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SetContextData(ctx, field, "my_config1", 1)
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v) // still no cache
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ctx = WithCacheContext(ctx)
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v)
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SetContextData(ctx, field, "my_config1", 1)
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v = GetContextData(ctx, field, "my_config1")
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assert.NotNil(t, v)
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ctx = WithNoCacheContext(ctx)
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v)
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SetContextData(ctx, field, "my_config1", 1)
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v = GetContextData(ctx, field, "my_config1")
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assert.Nil(t, v) // still no cache
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}
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