constants

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Constants

const (
	B  = 1
	KB = 1024 * B
	MB = 1024 * KB
	GB = 1024 * MB
)

const (
	CheckFileTypeBufferSize = 512 // 适用于判断文件类型，需要读取前512个字节
	FileStreamBufferSize    = 1024
)

const (
	MaxConnections  = 1000             // (DB) 最大连接数
	MaxIdleConns    = 10               // (DB) 最大空闲连接数
	ConnMaxLifetime = 10 * time.Second // (DB) 最大可复用时间
	ConnMaxIdleTime = 5 * time.Minute  // (DB) 最长保持空闲状态时间
)

const (
	UserTableName       = "users"
	CategoryTableName   = "categories"
	OrderTableName      = "orders"
	OrderGoodsTableName = "order_goods"
	SpuTableName        = "spu_info"
	SpuImageTableName   = "spu_image"

	SpuSkuTableName        = "spu_to_sku"
	CartTableName          = "cart"
	PaymentTableName       = "payments"
	PaymentRefundTableName = "payment_refunds"
	PaymentLedgerTableName = "payment_ledgers"
)

const (
	// 请求体最大体积
	ServerMaxRequestBodySize = 1 << 31

	CorsMaxAge = 12 * time.Hour

	SentinelThreshold        = 100
	SentinelStatIntervalInMs = 1000
	LoginDataKey             = "loginData"
)

const (
	KafkaReadMinBytes      = 512 * B
	KafkaReadMaxBytes      = 1 * MB
	KafkaRetries           = 3
	DefaultReaderGroupID   = "r"
	DefaultTimeRetainHours = 6 // 6小时

	DefaultConsumerChanCap         = 20
	DefaultKafkaProductorSyncWrite = false

	DefaultKafkaNumPartitions     = -1
	DefaultKafkaReplicationFactor = -1
)

const (
	KafkaImageTopic   = "ImageTopic"
	KafkaPartitionNum = 3
	KafkaImageGroupId = "ImageGroupId"
)

Commodity Service

const (
	KafkaCartTopic                = "cart"           // Kafka的话题
	KafkaCartAddGoodsPartitionNum = 10               // Kafka的分区数
	KafkaCartAddGoodsConsumerNum  = 10               // Kafka的并发消费者数
	KafkaCartAddGoodsGroupId      = "cart_add_goods" // Kafka的订阅组id
)

CartService

const (
	// LogFilePath 对应 ${pwd}/{LogFilePath}/log.log 相对于当前运行路径而言
	LogFilePath = "log"

	LogFilePathTemplate      = "%s/%s/%s/%s.log"
	ErrorLogFilePathTemplate = "%s/%s/%s/%s_stderr.log"

	// DefaultLogLevel 是默认的日志等级. Supported Level: debug info warn error fatal
	DefaultLogLevel = "INFO"

	StackTraceKey = "stacktrace"
	ServiceKey    = "service"
	SourceKey     = "source"
	ErrorCodeKey  = "error_code"

	KlogSource  = "klog"
	MysqlSource = "mysql"
	RedisSource = "redis"
	KafkaSource = "kafka"
)

const (
	OrderNotExist            = false
	PaymentExist             = true
	PaymentNotExist          = false
	UserNotExist             = false
	PaymentSecretKey         = "west2online"
	RefundSecretKey          = "west2online"
	ExpirationDuration       = 15 * time.Minute
	RefundExpirationDuration = 15 * time.Minute
	// TODO 这一个常量要改
	PingTime = 2
)

const (
	RedisStoreSuccess       = true  // 成功
	RedisStoreFailed        = false // Redis 存储失败
	RedisValid              = true
	RedisMinute             = 60
	RedisHour               = 3600
	RedisDay                = 86400
	RedisDayPlaceholder     = "1"
	RedisCheckTimesInMinute = 3
)

const (
	PaymentStatusPending    = iota // 待支付
	PaymentStatusProcessing        // 处理中
	PaymentStatusSuccess           // 成功支付
	PaymentStatusFailed            // 支付失败
)

const (
	RefundStatusPending = iota
	RefundStatusProcessing
	RefundStatusSuccess
	RefundStatusFailed
)

const (
	RedisCartExpireTime     = 5 * 60 * time.Second
	RedisCartStoreNum       = 30
	RedisSpuImageExpireTime = 5 * 60 * time.Second
)

Redis Key and Expire Time

const (
	RedisDBOrder     = 0
	RedisDBCommodity = 1
	RedisDBCart      = 2
)

Redis DB Name

const (
	RedisPoolSize           = 50              // 最大连接数
	RedisMinIdleConnections = 10              // 最小空闲连接数
	RedisDialTimeout        = 5 * time.Second // 连接超时时间
)

Redis Connection Pool Configuration

const (
	MuxConnection    = 1                     // (RPC) 最大连接数
	StreamBufferSize = 1024                  // (RPC) 流请求 Buffer 尺寸
	MaxQPS           = 100                   // (RPC) 最大 QPS
	RPCTimeout       = 3 * time.Second       // (RPC) RPC请求超时时间
	ConnectTimeout   = 50 * time.Millisecond // (RPC) 连接超时时间
)

const (
	GatewayServiceName   = "gateway"
	OrderServiceName     = "order"
	UserServiceName      = "user"
	PaymentServiceName   = "payment"
	CommodityServiceName = "commodity"
	CartServiceName      = "cart"
)

Service Name

const (
	UserMaximumPasswordLength      = 72 // DO NOT EDIT (ref: bcrypt.GenerateFromPassword)
	UserMinimumPasswordLength      = 5
	UserDefaultEncryptPasswordCost = 10
	UserTestId                     = 1
)

UserService

const (
	OrderStatusUnpaidCode    = -1
	OrderStatusPaidCode      = 1
	OrderStatusCompletedCode = 2
	OrderStatusCancelledCode = 3
)

OrderService

const (
	OrderStatusUnpaid    = "待支付"
	OrderStatusPaid      = "已支付"
	OrderStatusCompleted = "已完成"
	OrderStatusCancelled = "已取消"
	OrderStatusUnknown   = "未知状态"
)

OrderService Status Messages

const (
	CommodityAllowedForSale    = 1
	CommodityNotAllowedForSale = 2
)

CommodityService

const (
	DefaultDataCenterID = int64(0)
	DefaultWorkerID     = int64(0)
)

const (
	WorkerOfUserService = 1 + int64(iota)
	WorkerOfOrderService
)

const (
	TypeAccessToken  = 0
	TypeRefreshToken = 1

	AccessTokenTTL  = time.Hour * 24 * 7  // Access Token 有效期7天
	RefreshTokenTTL = time.Hour * 24 * 30 // Refresh Token 有效期30天
	Issuer          = "west2-online"      // token 颁发者

	AuthHeader         = "Authorization" // 获取 Token 时的请求头
	AccessTokenHeader  = "Access-Token"  // 响应时的访问令牌头
	RefreshTokenHeader = "Refresh-Token" // 响应时的刷新令牌头
)

const (
	SpuDirDest      = "/spu/"
	SpuImageDirDest = "/spu_image/"
)

const (
	RedisSlowQuery = 10 // ms redis默认的慢查询时间，适用于 logger
)

const (
	TestUserID = 123
)

TODO 最后要删除这个东西