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package counter
import (
"encoding/binary"
"fmt"
. "github.com/tendermint/go-common"
"github.com/tendermint/tmsp/types"
)
type CounterApplication struct {
hashCount int
txCount int
serial bool
}
func NewCounterApplication(serial bool) *CounterApplication {
return &CounterApplication{serial: serial}
}
func (app *CounterApplication) Info() string {
return Fmt("hashes:%v, txs:%v", app.hashCount, app.txCount)
}
func (app *CounterApplication) SetOption(key string, value string) (log string) {
if key == "serial" && value == "on" {
app.serial = true
}
return ""
}
func (app *CounterApplication) AppendTx(tx []byte) (code types.CodeType, result []byte, log string) {
if app.serial {
tx8 := make([]byte, 8)
copy(tx8[len(tx8)-len(tx):], tx)
txValue := binary.BigEndian.Uint64(tx8)
if txValue != uint64(app.txCount) {
return types.CodeType_BadNonce, nil, fmt.Sprintf("Invalid nonce. Expected %v, got %v", app.txCount, txValue)
}
}
app.txCount += 1
return types.CodeType_OK, nil, ""
}
func (app *CounterApplication) CheckTx(tx []byte) (code types.CodeType, result []byte, log string) {
if app.serial {
tx8 := make([]byte, 8)
copy(tx8[len(tx8)-len(tx):], tx)
txValue := binary.BigEndian.Uint64(tx8)
if txValue < uint64(app.txCount) {
return types.CodeType_BadNonce, nil, fmt.Sprintf("Invalid nonce. Expected >= %v, got %v", app.txCount, txValue)
}
}
return types.CodeType_OK, nil, ""
}
func (app *CounterApplication) Commit() (hash []byte, log string) {
app.hashCount += 1
if app.txCount == 0 {
return nil, ""
} else {
hash := make([]byte, 8)
binary.BigEndian.PutUint64(hash, uint64(app.txCount))
return hash, ""
}
}
func (app *CounterApplication) Query(query []byte) (code types.CodeType, result []byte, log string) {
return types.CodeType_OK, nil, fmt.Sprintf("Query is not supported")
}