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option.go
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option.go
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package mossdb
import (
"time"
)
type OpType uint16
const (
GetOp OpType = iota + 1
ModifyOp
DeleteOp
WatchOP
ListOp
)
var opMap = map[OpType]string{
GetOp: "GET",
ModifyOp: "MODIFY",
DeleteOp: "DELETE",
WatchOP: "WATCH",
}
func (op OpType) String() string {
return opMap[op]
}
type Op struct {
op OpType
key string
end string
val Val
ttl int64
prefix bool
all bool
msg string
createdNotify bool
updateNotify bool
deleteNotify bool
eventBuffSize int
}
func NewOption(op OpType, key string, val Val, opts ...Option) *Op {
opt := &Op{key: key, op: op, val: val}
for _, f := range opts {
f(opt)
}
return opt
}
func getOption(key string, opts ...Option) Op {
return *NewOption(GetOp, key, nil, opts...)
}
func listOption(opts ...Option) Op {
return *NewOption(ListOp, "", nil, opts...)
}
func setOption(key string, val Val, opts ...Option) *Op {
return NewOption(ModifyOp, key, val, opts...)
}
func deleteOption(key string, opts ...Option) *Op {
return NewOption(DeleteOp, key, nil, opts...)
}
func watchOption(key string, opts ...Option) *Op {
return NewOption(WatchOP, key, nil, opts...)
}
func (op *Op) IsGet() bool {
return op.op == GetOp
}
func (op *Op) IsMutate() bool {
return op.op == ModifyOp || op.op == DeleteOp
}
type Option func(*Op)
func WithTTL(ttl time.Duration) Option {
return func(opt *Op) {
opt.ttl = time.Now().Add(ttl).UnixNano()
}
}
func WithPrefix() Option {
return func(opt *Op) {
opt.prefix = true
}
}
func WithPrefixKey(key string) Option {
return func(opt *Op) {
opt.key = key
opt.prefix = true
}
}
func WithAll() Option {
return func(opt *Op) {
opt.all = true
}
}
func WithCreateNotify() Option {
return func(opt *Op) {
opt.createdNotify = true
}
}
func WithUpdateNotify() Option {
return func(opt *Op) {
opt.updateNotify = true
}
}
func WithDeleteNotify() Option {
return func(opt *Op) {
opt.deleteNotify = true
}
}
func WithMsg(msg string) Option {
return func(opt *Op) {
opt.msg = msg
}
}
func WithWatchEventBuffSize(size int) Option {
return func(opt *Op) {
if size > 0 {
opt.eventBuffSize = size
}
}
}