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collector.go
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/
collector.go
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package collector
import (
"context"
"github.com/lovoo/goka"
"github.com/dinorain/depositaja"
"github.com/dinorain/depositaja/proto/pb"
)
var (
group goka.Group = "balance"
Table goka.Table = goka.GroupTable(group)
)
func collect(ctx goka.Context, msg interface{}) {
ml := &pb.DepositHistory{}
if v := ctx.Value(); v != nil {
ml = v.(*pb.DepositHistory)
}
m := msg.(*pb.Deposit)
ml.WalletId = m.WalletId
ml.Deposits = append(ml.Deposits, m)
ctx.SetValue(ml)
}
func Run(ctx context.Context, brokers []string) func() error {
return func() error {
g := goka.DefineGroup(group,
goka.Input(depositaja.DepositStream, new(depositaja.DepositCodec), collect),
goka.Persist(new(depositaja.DepositListCodec)),
)
p, err := goka.NewProcessor(brokers, g)
if err != nil {
return err
}
return p.Run(ctx)
}
}