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// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package api
import (
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
)
const (
TxPoolApiVersion = "1.0"
)
var (
// mapping between methods and handlers
txpoolMapping = map[string]txpoolhandler{
"txpool_status": (*txPoolApi).Status,
}
)
// net callback handler
type txpoolhandler func(*txPoolApi, *shared.Request) (interface{}, error)
// txpool api provider
type txPoolApi struct {
xeth *xeth.XEth
ethereum *eth.Ethereum
methods map[string]txpoolhandler
codec codec.ApiCoder
}
// create a new txpool api instance
func NewTxPoolApi(xeth *xeth.XEth, eth *eth.Ethereum, coder codec.Codec) *txPoolApi {
return &txPoolApi{
xeth: xeth,
ethereum: eth,
methods: txpoolMapping,
codec: coder.New(nil),
}
}
// collection with supported methods
func (self *txPoolApi) Methods() []string {
methods := make([]string, len(self.methods))
i := 0
for k := range self.methods {
methods[i] = k
i++
}
return methods
}
// Execute given request
func (self *txPoolApi) Execute(req *shared.Request) (interface{}, error) {
if callback, ok := self.methods[req.Method]; ok {
return callback(self, req)
}
return nil, shared.NewNotImplementedError(req.Method)
}
func (self *txPoolApi) Name() string {
return shared.TxPoolApiName
}
func (self *txPoolApi) ApiVersion() string {
return TxPoolApiVersion
}
func (self *txPoolApi) Status(req *shared.Request) (interface{}, error) {
pending, queue := self.ethereum.TxPool().Stats()
return map[string]int{
"pending": pending,
"queued": queue,
}, nil
}
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