Replace Redis dependency with a generic cache store for fast path flag handling

This commit is contained in:
mlsmaycon
2026-04-21 16:28:24 +02:00
parent 3716838c25
commit 48c080b861
3 changed files with 75 additions and 126 deletions

View File

@@ -5,10 +5,11 @@ import (
"testing"
"time"
"github.com/redis/go-redis/v9"
"github.com/eko/gocache/lib/v4/store"
gocache_store "github.com/eko/gocache/store/go_cache/v4"
gocache "github.com/patrickmn/go-cache"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
testcontainersredis "github.com/testcontainers/testcontainers-go/modules/redis"
)
func TestParseFastPathFlag(t *testing.T) {
@@ -54,101 +55,75 @@ func TestFastPathFlag_SetEnabled(t *testing.T) {
assert.False(t, flag.Enabled(), "flag should report disabled after setEnabled(false)")
}
func TestFastPathRedisStore_InvalidURL(t *testing.T) {
_, err := getFastPathRedisStore(context.Background(), "invalid-url")
assert.Error(t, err, "Should fail with invalid URL")
func TestNewFastPathFlag(t *testing.T) {
assert.True(t, NewFastPathFlag(true).Enabled(), "NewFastPathFlag(true) should report enabled")
assert.False(t, NewFastPathFlag(false).Enabled(), "NewFastPathFlag(false) should report disabled")
}
func TestFastPathRedisStore_UnreachableHost(t *testing.T) {
_, err := getFastPathRedisStore(context.Background(), "redis://127.0.0.1:59998")
assert.Error(t, err, "Should fail when Redis is unreachable")
}
func TestRunFastPathFlagRoutine_DisabledWithoutEnvVar(t *testing.T) {
t.Setenv(fastPathRedisURLEnv, "")
func TestRunFastPathFlagRoutine_NilStoreStaysDisabled(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
t.Cleanup(cancel)
flag := RunFastPathFlagRoutine(ctx, 100*time.Millisecond, "any-key")
flag := RunFastPathFlagRoutine(ctx, nil, 50*time.Millisecond, "peerSyncFastPath")
require.NotNil(t, flag, "RunFastPathFlagRoutine should always return a non-nil flag")
assert.False(t, flag.Enabled(), "flag should stay disabled when env var is unset")
assert.False(t, flag.Enabled(), "flag should stay disabled when no cache store is provided")
time.Sleep(250 * time.Millisecond)
assert.False(t, flag.Enabled(), "flag should remain disabled even after wait when env var is unset")
time.Sleep(150 * time.Millisecond)
assert.False(t, flag.Enabled(), "flag should remain disabled after wait when no cache store is provided")
}
func TestRunFastPathFlagRoutine_ReadsFlagFromRedis(t *testing.T) {
redisURL, client := setupFastPathRedisContainer(t)
t.Setenv(fastPathRedisURLEnv, redisURL)
func TestRunFastPathFlagRoutine_ReadsFlagFromStore(t *testing.T) {
cacheStore := newFastPathTestStore(t)
ctx, cancel := context.WithCancel(context.Background())
t.Cleanup(cancel)
flag := RunFastPathFlagRoutine(ctx, 100*time.Millisecond, "peerSyncFastPath")
flag := RunFastPathFlagRoutine(ctx, cacheStore, 50*time.Millisecond, "peerSyncFastPath")
require.NotNil(t, flag)
assert.False(t, flag.Enabled(), "flag should start disabled with no key")
assert.False(t, flag.Enabled(), "flag should start disabled when the key is missing")
err := client.Set(ctx, "peerSyncFastPath", "1", 0).Err()
require.NoError(t, err, "set redis key must succeed")
assert.Eventually(t, flag.Enabled, 3*time.Second, 50*time.Millisecond, "flag should flip to enabled after Redis key is set to 1")
err = client.Set(ctx, "peerSyncFastPath", "0", 0).Err()
require.NoError(t, err, "reset redis key must succeed")
require.NoError(t, cacheStore.Set(ctx, "peerSyncFastPath", "1"), "seed flag=1 into shared store")
assert.Eventually(t, flag.Enabled, 2*time.Second, 25*time.Millisecond, "flag should flip enabled after the key is set to 1")
require.NoError(t, cacheStore.Set(ctx, "peerSyncFastPath", "0"), "override flag=0 into shared store")
assert.Eventually(t, func() bool {
return !flag.Enabled()
}, 3*time.Second, 50*time.Millisecond, "flag should flip back to disabled after Redis key is set to 0")
}, 2*time.Second, 25*time.Millisecond, "flag should flip disabled after the key is set to 0")
err = client.Del(ctx, "peerSyncFastPath").Err()
require.NoError(t, err, "delete redis key must succeed")
require.NoError(t, cacheStore.Delete(ctx, "peerSyncFastPath"), "remove flag key")
assert.Eventually(t, func() bool {
return !flag.Enabled()
}, 2*time.Second, 25*time.Millisecond, "flag should stay disabled after the key is deleted")
err = client.Set(ctx, "peerSyncFastPath", "true", 0).Err()
require.NoError(t, err)
assert.Eventually(t, flag.Enabled, 3*time.Second, 50*time.Millisecond, "flag should accept \"true\" as enabled")
require.NoError(t, cacheStore.Set(ctx, "peerSyncFastPath", "true"), "enable via string true")
assert.Eventually(t, flag.Enabled, 2*time.Second, 25*time.Millisecond, "flag should accept \"true\" as enabled")
}
func TestRunFastPathFlagRoutine_MissingKeyKeepsDisabled(t *testing.T) {
redisURL, _ := setupFastPathRedisContainer(t)
t.Setenv(fastPathRedisURLEnv, redisURL)
cacheStore := newFastPathTestStore(t)
ctx, cancel := context.WithCancel(context.Background())
t.Cleanup(cancel)
flag := RunFastPathFlagRoutine(ctx, 100*time.Millisecond, "peerSyncFastPathAbsent")
flag := RunFastPathFlagRoutine(ctx, cacheStore, 50*time.Millisecond, "peerSyncFastPathAbsent")
require.NotNil(t, flag)
time.Sleep(400 * time.Millisecond)
assert.False(t, flag.Enabled(), "flag should stay disabled when the key is missing in Redis")
time.Sleep(200 * time.Millisecond)
assert.False(t, flag.Enabled(), "flag should stay disabled when the key is missing from the store")
}
func setupFastPathRedisContainer(t *testing.T) (string, *redis.Client) {
func TestRunFastPathFlagRoutine_DefaultKeyUsedWhenEmpty(t *testing.T) {
cacheStore := newFastPathTestStore(t)
ctx, cancel := context.WithCancel(context.Background())
t.Cleanup(cancel)
require.NoError(t, cacheStore.Set(ctx, DefaultFastPathFlagKey, "1"), "seed default key")
flag := RunFastPathFlagRoutine(ctx, cacheStore, 50*time.Millisecond, "")
require.NotNil(t, flag)
assert.Eventually(t, flag.Enabled, 2*time.Second, 25*time.Millisecond, "empty flagKey should fall back to DefaultFastPathFlagKey")
}
func newFastPathTestStore(t *testing.T) store.StoreInterface {
t.Helper()
ctx := context.Background()
redisContainer, err := testcontainersredis.Run(ctx, "redis:7")
require.NoError(t, err, "create redis test container")
t.Cleanup(func() {
if err := redisContainer.Terminate(ctx); err != nil {
t.Logf("failed to terminate redis container: %s", err)
}
})
redisURL, err := redisContainer.ConnectionString(ctx)
require.NoError(t, err)
options, err := redis.ParseURL(redisURL)
require.NoError(t, err)
client := redis.NewClient(options)
t.Cleanup(func() {
if err := client.Close(); err != nil {
t.Logf("failed to close redis client: %s", err)
}
})
return redisURL, client
return gocache_store.NewGoCache(gocache.New(5*time.Minute, 10*time.Minute))
}