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Adjust Mojang's queue behavior

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This commit is contained in:
ErickSkrauch 2019-05-06 17:12:37 +03:00
parent 9dde5715f5
commit 1f057a27aa
6 changed files with 92 additions and 84 deletions
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4
CHANGELOG.md
View File

@ -12,6 +12,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Mojang's textures queue now caches textures data for 70 seconds to avoid strange `429` errors.
- Mojang's textures queue now doesn't log timeout errors.
### Fixed
- Panic when Redis connection is broken.
- Duplication of Redis connections pool for Mojang's textures queue.
## [4.2.0] - 2019-05-02
### Added
- `CHANGELOG.md` file.

2
api/mojang/queue/queue.go
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@ -143,7 +143,7 @@ func (ctx *JobsQueue) queueRound() {
}
}
ctx.Storage.StoreUuid(job.Username, uuid)
_ = ctx.Storage.StoreUuid(job.Username, uuid)
if uuid == "" {
job.RespondTo <- nil
ctx.Logger.IncCounter("mojang_textures.usernames.uuid_miss", 1)

23
api/mojang/queue/queue_test.go
View File

@ -53,8 +53,9 @@ func (m *mockStorage) GetUuid(username string) (string, error) {
return args.String(0), args.Error(1)
}
func (m *mockStorage) StoreUuid(username string, uuid string) {
m.Called(username, uuid)
func (m *mockStorage) StoreUuid(username string, uuid string) error {
args := m.Called(username, uuid)
return args.Error(0)
}
func (m *mockStorage) GetTextures(uuid string) (*mojang.SignedTexturesResponse, error) {
@ -133,7 +134,7 @@ func (suite *queueTestSuite) TestReceiveTexturesForOneUsernameWithoutAnyCache()
suite.Logger.On("RecordTimer", "mojang_textures.result_time", mock.Anything).Once()
suite.Storage.On("GetUuid", "maksimkurb").Once().Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once()
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil)
suite.Storage.On("GetTextures", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil, &ValueNotFound{})
suite.Storage.On("StoreTextures", "0d252b7218b648bfb86c2ae476954d32", expectedResult).Once()
@ -166,8 +167,8 @@ func (suite *queueTestSuite) TestReceiveTexturesForFewUsernamesWithoutAnyCache()
suite.Storage.On("GetUuid", "maksimkurb").Once().Return("", &ValueNotFound{})
suite.Storage.On("GetUuid", "Thinkofdeath").Once().Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once()
suite.Storage.On("StoreUuid", "Thinkofdeath", "4566e69fc90748ee8d71d7ba5aa00d20").Once()
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil)
suite.Storage.On("StoreUuid", "Thinkofdeath", "4566e69fc90748ee8d71d7ba5aa00d20").Once().Return(nil)
suite.Storage.On("GetTextures", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil, &ValueNotFound{})
suite.Storage.On("GetTextures", "4566e69fc90748ee8d71d7ba5aa00d20").Once().Return(nil, &ValueNotFound{})
suite.Storage.On("StoreTextures", "0d252b7218b648bfb86c2ae476954d32", expectedResult1).Once()
@ -274,7 +275,7 @@ func (suite *queueTestSuite) TestReceiveTexturesForMoreThan100Usernames() {
suite.Logger.On("RecordTimer", "mojang_textures.result_time", mock.Anything).Times(120)
suite.Storage.On("GetUuid", mock.Anything).Times(120).Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", mock.Anything, "").Times(120) // if username is not compared to uuid, then receive ""
suite.Storage.On("StoreUuid", mock.Anything, "").Times(120).Return(nil) // should be called with "" if username is not compared to uuid
// Storage.GetTextures and Storage.SetTextures shouldn't be called
suite.MojangApi.On("UsernamesToUuids", usernames[0:100]).Once().Return([]*mojang.ProfileInfo{}, nil)
@ -308,7 +309,7 @@ func (suite *queueTestSuite) TestReceiveTexturesForTheSameUsernames() {
suite.Logger.On("RecordTimer", "mojang_textures.result_time", mock.Anything).Once()
suite.Storage.On("GetUuid", "maksimkurb").Twice().Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once()
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil)
suite.Storage.On("GetTextures", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil, &ValueNotFound{})
suite.Storage.On("StoreTextures", "0d252b7218b648bfb86c2ae476954d32", expectedResult).Once()
suite.MojangApi.On("UsernamesToUuids", []string{"maksimkurb"}).Once().Return([]*mojang.ProfileInfo{
@ -340,7 +341,7 @@ func (suite *queueTestSuite) TestReceiveTexturesForUsernameThatAlreadyProcessing
suite.Logger.On("RecordTimer", "mojang_textures.result_time", mock.Anything).Once()
suite.Storage.On("GetUuid", "maksimkurb").Twice().Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once()
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil)
suite.Storage.On("GetTextures", "0d252b7218b648bfb86c2ae476954d32").Once().Return(nil, &ValueNotFound{})
suite.Storage.On("StoreTextures", "0d252b7218b648bfb86c2ae476954d32", expectedResult).Once()
@ -376,7 +377,7 @@ func (suite *queueTestSuite) TestDoNothingWhenNoTasks() {
suite.Logger.On("RecordTimer", "mojang_textures.result_time", mock.Anything).Once()
suite.Storage.On("GetUuid", "maksimkurb").Once().Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "").Once()
suite.Storage.On("StoreUuid", "maksimkurb", "").Once().Return(nil)
// Storage.GetTextures and Storage.StoreTextures shouldn't be called
suite.MojangApi.On("UsernamesToUuids", []string{"maksimkurb"}).Once().Return([]*mojang.ProfileInfo{}, nil)
@ -455,7 +456,7 @@ func (suite *queueTestSuite) TestShouldNotLogErrorWhenExpectedErrorReturnedFromU
suite.Logger.On("Warning", ":name: Got 429 Too Many Requests :err", mock.Anything, mock.Anything).Once()
suite.Storage.On("GetUuid", "maksimkurb").Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32")
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Return(nil)
suite.Storage.On("GetTextures", "0d252b7218b648bfb86c2ae476954d32").Return(nil, &ValueNotFound{})
suite.Storage.On("StoreTextures", "0d252b7218b648bfb86c2ae476954d32", (*mojang.SignedTexturesResponse)(nil))
@ -481,7 +482,7 @@ func (suite *queueTestSuite) TestShouldLogEmergencyOnUnexpectedErrorReturnedFrom
suite.Logger.On("Emergency", ":name: Unknown Mojang response error: :err", mock.Anything, mock.Anything).Once()
suite.Storage.On("GetUuid", "maksimkurb").Return("", &ValueNotFound{})
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32")
suite.Storage.On("StoreUuid", "maksimkurb", "0d252b7218b648bfb86c2ae476954d32").Return(nil)
suite.Storage.On("GetTextures", "0d252b7218b648bfb86c2ae476954d32").Return(nil, &ValueNotFound{})
suite.Storage.On("StoreTextures", "0d252b7218b648bfb86c2ae476954d32", (*mojang.SignedTexturesResponse)(nil))

6
api/mojang/queue/storage.go
View File

@ -4,7 +4,7 @@ import "github.com/elyby/chrly/api/mojang"
type UuidsStorage interface {
GetUuid(username string) (string, error)
StoreUuid(username string, uuid string)
StoreUuid(username string, uuid string) error
}
// nil value can be passed to the storage to indicate that there is no textures
@ -31,8 +31,8 @@ func (s *SplittedStorage) GetUuid(username string) (string, error) {
return s.UuidsStorage.GetUuid(username)
}
func (s *SplittedStorage) StoreUuid(username string, uuid string) {
s.UuidsStorage.StoreUuid(username, uuid)
func (s *SplittedStorage) StoreUuid(username string, uuid string) error {
return s.UuidsStorage.StoreUuid(username, uuid)
}
func (s *SplittedStorage) GetTextures(uuid string) (*mojang.SignedTexturesResponse, error) {

5
api/mojang/queue/storage_test.go
View File

@ -17,8 +17,9 @@ func (m *uuidsStorageMock) GetUuid(username string) (string, error) {
return args.String(0), args.Error(1)
}
func (m *uuidsStorageMock) StoreUuid(username string, uuid string) {
func (m *uuidsStorageMock) StoreUuid(username string, uuid string) error {
m.Called(username, uuid)
return nil
}
type texturesStorageMock struct {
@ -59,7 +60,7 @@ func TestSplittedStorage(t *testing.T) {
t.Run("StoreUuid", func(t *testing.T) {
storage, uuidsMock, _ := createMockedStorage()
uuidsMock.On("StoreUuid", "username", "result").Once()
storage.StoreUuid("username", "result")
_ = storage.StoreUuid("username", "result")
uuidsMock.AssertExpectations(t)
})

136
db/redis.go
View File

@ -6,7 +6,6 @@ import (
"encoding/json"
"fmt"
"io"
"log"
"strconv"
"strings"
"time"
@ -21,36 +20,35 @@ import (
)
type RedisFactory struct {
Host string
Port int
PoolSize int
connection *pool.Pool
Host string
Port int
PoolSize int
pool *pool.Pool
}
// TODO: Why isn't a pointer used here?
func (f RedisFactory) CreateSkinsRepository() (interfaces.SkinsRepository, error) {
func (f *RedisFactory) CreateSkinsRepository() (interfaces.SkinsRepository, error) {
return f.createInstance()
}
func (f RedisFactory) CreateCapesRepository() (interfaces.CapesRepository, error) {
func (f *RedisFactory) CreateCapesRepository() (interfaces.CapesRepository, error) {
panic("capes repository not supported for this storage type")
}
func (f RedisFactory) CreateMojangUuidsRepository() (queue.UuidsStorage, error) {
func (f *RedisFactory) CreateMojangUuidsRepository() (queue.UuidsStorage, error) {
return f.createInstance()
}
func (f RedisFactory) createInstance() (*redisDb, error) {
connection, err := f.getConnection()
func (f *RedisFactory) createInstance() (*redisDb, error) {
p, err := f.getPool()
if err != nil {
return nil, err
}
return &redisDb{connection}, nil
return &redisDb{p}, nil
}
func (f RedisFactory) getConnection() (*pool.Pool, error) {
if f.connection == nil {
func (f *RedisFactory) getPool() (*pool.Pool, error) {
if f.pool == nil {
if f.Host == "" {
return nil, &ParamRequired{"host"}
}
@ -65,88 +63,87 @@ func (f RedisFactory) getConnection() (*pool.Pool, error) {
return nil, err
}
f.connection = conn
go func() {
period := 5
for {
time.Sleep(time.Duration(period) * time.Second)
resp := f.connection.Cmd("PING")
if resp.Err == nil {
continue
}
log.Println("Redis not pinged. Try to reconnect")
conn, err := pool.New("tcp", addr, f.PoolSize)
if err != nil {
log.Printf("Cannot reconnect to redis: %v\n", err)
log.Printf("Waiting %d seconds to retry\n", period)
continue
}
f.connection = conn
log.Println("Reconnected")
}
}()
f.pool = conn
}
return f.connection, nil
return f.pool, nil
}
type redisDb struct {
conn *pool.Pool
pool *pool.Pool
}
const accountIdToUsernameKey = "hash:username-to-account-id"
const mojangUsernameToUuidKey = "hash:mojang-username-to-uuid"
func (db *redisDb) FindByUsername(username string) (*model.Skin, error) {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
conn, err := db.pool.Get()
if err != nil {
return nil, err
}
defer db.pool.Put(conn)
return findByUsername(username, conn)
}
func (db *redisDb) FindByUserId(id int) (*model.Skin, error) {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
conn, err := db.pool.Get()
if err != nil {
return nil, err
}
defer db.pool.Put(conn)
return findByUserId(id, conn)
}
func (db *redisDb) Save(skin *model.Skin) error {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
conn, err := db.pool.Get()
if err != nil {
return err
}
defer db.pool.Put(conn)
return save(skin, conn)
}
func (db *redisDb) RemoveByUserId(id int) error {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
conn, err := db.pool.Get()
if err != nil {
return err
}
defer db.pool.Put(conn)
return removeByUserId(id, conn)
}
func (db *redisDb) RemoveByUsername(username string) error {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
conn, err := db.pool.Get()
if err != nil {
return err
}
defer db.pool.Put(conn)
return removeByUsername(username, conn)
}
func (db *redisDb) GetUuid(username string) (string, error) {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
conn, err := db.pool.Get()
if err != nil {
return "", err
}
defer db.pool.Put(conn)
return findMojangUuidByUsername(username, conn)
}
func (db *redisDb) StoreUuid(username string, uuid string) {
conn, _ := db.conn.Get()
defer db.conn.Put(conn)
func (db *redisDb) StoreUuid(username string, uuid string) error {
conn, err := db.pool.Get()
if err != nil {
return err
}
defer db.pool.Put(conn)
storeMojangUuid(username, uuid, conn)
return storeMojangUuid(username, uuid, conn)
}
func findByUsername(username string, conn util.Cmder) (*model.Skin, error) {
@ -156,7 +153,7 @@ func findByUsername(username string, conn util.Cmder) (*model.Skin, error) {
redisKey := buildUsernameKey(username)
response := conn.Cmd("GET", redisKey)
if response.IsType(redis.Nil) {
if !response.IsType(redis.Str) {
return nil, &SkinNotFoundError{username}
}
@ -183,7 +180,7 @@ func findByUsername(username string, conn util.Cmder) (*model.Skin, error) {
func findByUserId(id int, conn util.Cmder) (*model.Skin, error) {
response := conn.Cmd("HGET", accountIdToUsernameKey, id)
if response.IsType(redis.Nil) {
if !response.IsType(redis.Str) {
return nil, &SkinNotFoundError{"unknown"}
}
@ -215,17 +212,17 @@ func removeByUserId(id int, conn util.Cmder) error {
func removeByUsername(username string, conn util.Cmder) error {
record, err := findByUsername(username, conn)
if err != nil {
if _, ok := err.(*SkinNotFoundError); !ok {
return err
if _, ok := err.(*SkinNotFoundError); ok {
return nil
}
return err
}
conn.Cmd("MULTI")
conn.Cmd("DEL", buildUsernameKey(record.Username))
if record != nil {
conn.Cmd("HDEL", accountIdToUsernameKey, record.UserId)
}
conn.Cmd("HDEL", accountIdToUsernameKey, record.UserId)
conn.Cmd("EXEC")
@ -272,9 +269,14 @@ func findMojangUuidByUsername(username string, conn util.Cmder) (string, error)
return parts[0], nil
}
func storeMojangUuid(username string, uuid string, conn util.Cmder) {
func storeMojangUuid(username string, uuid string, conn util.Cmder) error {
value := uuid + ":" + strconv.FormatInt(time.Now().Unix(), 10)
conn.Cmd("HSET", mojangUsernameToUuidKey, strings.ToLower(username), value)
res := conn.Cmd("HSET", mojangUsernameToUuidKey, strings.ToLower(username), value)
if res.IsType(redis.Err) {
return res.Err
}
return nil
}
func buildUsernameKey(username string) string {
@ -284,8 +286,8 @@ func buildUsernameKey(username string) string {
func zlibEncode(str []byte) []byte {
var buff bytes.Buffer
writer := zlib.NewWriter(&buff)
writer.Write(str)
writer.Close()
_, _ = writer.Write(str)
_ = writer.Close()
return buff.Bytes()
}
@ -298,7 +300,7 @@ func zlibDecode(bts []byte) ([]byte, error) {
}
resultBuffer := new(bytes.Buffer)
io.Copy(resultBuffer, reader)
_, _ = io.Copy(resultBuffer, reader)
reader.Close()
return resultBuffer.Bytes(), nil