229 lines
6.9 KiB
Go
229 lines
6.9 KiB
Go
package model
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import (
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"testing"
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"time"
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"github.com/QuantumNous/new-api/common"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"gorm.io/gorm"
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)
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func createReserveTestUser(t *testing.T, quota int) User {
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t.Helper()
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user := User{
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Username: "reserve-user-" + common.GetRandomString(6),
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Password: "unused-password-hash",
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Role: common.RoleCommonUser,
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Status: common.UserStatusEnabled,
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Group: "default",
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AuthVersion: 1,
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Quota: quota,
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AffCode: "reserve-aff-" + common.GetRandomString(8),
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}
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require.NoError(t, DB.Create(&user).Error)
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return user
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}
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func createReserveTestToken(t *testing.T, remainQuota int) Token {
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t.Helper()
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token := Token{
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UserId: 1,
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Key: "reserve-token-" + common.GetRandomString(8),
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Name: "reserve-test",
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Status: common.TokenStatusEnabled,
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ExpiredTime: -1,
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RemainQuota: remainQuota,
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}
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require.NoError(t, token.Insert())
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return token
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}
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func getUserQuotaFromDB(t *testing.T, id int) int {
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t.Helper()
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var user User
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require.NoError(t, DB.Select("quota").First(&user, id).Error)
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return user.Quota
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}
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func getTokenFromDB(t *testing.T, id int) Token {
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t.Helper()
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var token Token
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require.NoError(t, DB.First(&token, id).Error)
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return token
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}
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func resetBatchUpdateTestState(t *testing.T) {
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t.Helper()
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oldBatchEnabled := common.BatchUpdateEnabled
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common.BatchUpdateEnabled = false
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for i := 0; i < BatchUpdateTypeCount; i++ {
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batchUpdateLocks[i].Lock()
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batchUpdateStores[i] = make(map[int]int)
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batchUpdateLocks[i].Unlock()
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}
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t.Cleanup(func() {
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common.BatchUpdateEnabled = oldBatchEnabled
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for i := 0; i < BatchUpdateTypeCount; i++ {
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batchUpdateLocks[i].Lock()
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batchUpdateStores[i] = make(map[int]int)
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batchUpdateLocks[i].Unlock()
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}
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})
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}
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func TestTryReserveQuotaWithoutRedis(t *testing.T) {
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truncateTables(t)
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resetBatchUpdateTestState(t)
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user := createReserveTestUser(t, 100)
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reserved, err := TryReserveUserQuota(user.Id, 60)
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require.NoError(t, err)
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assert.True(t, reserved)
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assert.Equal(t, 40, getUserQuotaFromDB(t, user.Id))
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reserved, err = TryReserveUserQuota(user.Id, 41)
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require.NoError(t, err)
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assert.False(t, reserved)
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assert.Equal(t, 40, getUserQuotaFromDB(t, user.Id))
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token := createReserveTestToken(t, 80)
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reserved, err = TryReserveTokenQuota(token.Id, token.Key, 25, false)
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require.NoError(t, err)
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assert.True(t, reserved)
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reloaded := getTokenFromDB(t, token.Id)
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assert.Equal(t, 55, reloaded.RemainQuota)
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assert.Equal(t, 25, reloaded.UsedQuota)
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reserved, err = TryReserveTokenQuota(token.Id, token.Key, 56, false)
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require.NoError(t, err)
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assert.False(t, reserved)
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assert.Equal(t, 55, getTokenFromDB(t, token.Id).RemainQuota)
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}
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func TestRedisBatchReserveNeverFallsBackToStaleDatabaseBalance(t *testing.T) {
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truncateTables(t)
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resetBatchUpdateTestState(t)
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useUserCacheMiniRedis(t)
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common.BatchUpdateEnabled = true
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user := createReserveTestUser(t, 10)
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reserved, err := TryReserveUserQuota(user.Id, 8)
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require.NoError(t, err)
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assert.True(t, reserved)
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assert.Equal(t, 10, getUserQuotaFromDB(t, user.Id), "batch delta is not flushed yet")
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reserved, err = TryReserveUserQuota(user.Id, 3)
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require.NoError(t, err)
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assert.False(t, reserved, "stale DB balance must not authorize a second spend")
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cachedUser, err := GetUserCache(user.Id)
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require.NoError(t, err)
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assert.Equal(t, 2, cachedUser.Quota)
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token := createReserveTestToken(t, 9)
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reserved, err = TryReserveTokenQuota(token.Id, token.Key, 7, false)
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require.NoError(t, err)
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assert.True(t, reserved)
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reserved, err = TryReserveTokenQuota(token.Id, token.Key, 3, false)
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require.NoError(t, err)
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assert.False(t, reserved)
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assert.Equal(t, 9, getTokenFromDB(t, token.Id).RemainQuota)
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batchUpdate()
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assert.Equal(t, 2, getUserQuotaFromDB(t, user.Id))
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reloadedToken := getTokenFromDB(t, token.Id)
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assert.Equal(t, 2, reloadedToken.RemainQuota)
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assert.Equal(t, 7, reloadedToken.UsedQuota)
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}
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func TestReserveFallsBackToDatabaseWhenRedisIsUnavailable(t *testing.T) {
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truncateTables(t)
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resetBatchUpdateTestState(t)
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server := useUserCacheMiniRedis(t)
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user := createReserveTestUser(t, 20)
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require.NoError(t, populateUserCache(user))
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server.Close()
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// Redis 故障时降级为数据库条件更新：服务保持可用且不会超扣。
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reserved, err := TryReserveUserQuota(user.Id, 5)
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require.NoError(t, err)
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assert.True(t, reserved)
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assert.Equal(t, 15, getUserQuotaFromDB(t, user.Id))
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reserved, err = TryReserveUserQuota(user.Id, 16)
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require.NoError(t, err)
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assert.False(t, reserved)
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assert.Equal(t, 15, getUserQuotaFromDB(t, user.Id))
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}
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func TestSynchronousReserveCompensatesCacheWhenPersistenceFails(t *testing.T) {
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truncateTables(t)
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resetBatchUpdateTestState(t)
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useUserCacheMiniRedis(t)
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user := createReserveTestUser(t, 10)
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require.NoError(t, populateUserCache(user))
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require.NoError(t, DB.Delete(&user).Error)
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reserved, err := TryReserveUserQuota(user.Id, 6)
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assert.False(t, reserved)
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assert.ErrorIs(t, err, gorm.ErrRecordNotFound)
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cached, cacheErr := cacheGetUserBase(user.Id)
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require.NoError(t, cacheErr)
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assert.Equal(t, 10, cached.Quota)
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token := createReserveTestToken(t, 12)
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_, err = GetTokenByKey(token.Key, true)
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require.NoError(t, err)
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require.NoError(t, DB.Delete(&token).Error)
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reserved, err = TryReserveTokenQuota(token.Id, token.Key, 7, false)
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assert.False(t, reserved)
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assert.ErrorIs(t, err, gorm.ErrRecordNotFound)
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cachedToken, cacheErr := cacheGetTokenByKey(token.Key)
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require.NoError(t, cacheErr)
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assert.Equal(t, 12, cachedToken.RemainQuota)
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assert.Zero(t, cachedToken.UsedQuota)
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}
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func TestTokenCacheInitPreservesLiveQuotaAndFenceBlocksStaleSnapshot(t *testing.T) {
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truncateTables(t)
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resetBatchUpdateTestState(t)
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server := useUserCacheMiniRedis(t)
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token := createReserveTestToken(t, 100)
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loaded, err := GetTokenByKey(token.Key, true)
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require.NoError(t, err)
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stale := *loaded
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result, err := cacheApplyTokenQuotaDelta(token.Id, token.Key, -70)
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require.NoError(t, err)
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require.Equal(t, cacheQuotaOK, result)
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// 已存在的哈希只刷新 TTL：数据库快照不得覆盖已被原子预扣的余额。
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code, err := cacheInitToken(stale)
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require.NoError(t, err)
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assert.Equal(t, 2, code)
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cached, err := cacheGetTokenByKey(token.Key)
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require.NoError(t, err)
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assert.Equal(t, 30, cached.RemainQuota)
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// 变更期间：fence 删除缓存并拦截并发读者手中的过期快照。
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require.NoError(t, invalidateTokenCacheForMutation(token.Key))
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code, err = cacheInitToken(stale)
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require.NoError(t, err)
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assert.Zero(t, code, "the pre-mutation snapshot must not be published while fenced")
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_, err = cacheGetTokenByKey(token.Key)
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assert.Error(t, err)
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// fence 过期后可重新从数据库水合。
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server.FastForward(time.Duration(tokenCacheFenceSeconds+1) * time.Second)
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fresh, err := GetTokenByKey(token.Key, false)
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require.NoError(t, err)
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assert.Equal(t, 100, fresh.RemainQuota)
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cached, err = cacheGetTokenByKey(token.Key)
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require.NoError(t, err)
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assert.Equal(t, 100, cached.RemainQuota)
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}
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