plugeth/rpc/api/web3.go

100 lines
2.6 KiB
Go
Raw Normal View History

2015-07-07 00:54:22 +00:00
// Copyright 2015 The go-ethereum Authors
// This file is part of go-ethereum.
//
// 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.
//
// go-ethereum 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 go-ethereum. If not, see <http://www.gnu.org/licenses/>.
2015-06-08 10:43:58 +00:00
package api
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
)
const (
2015-06-08 10:43:58 +00:00
Web3ApiVersion = "1.0"
2015-06-08 10:43:58 +00:00
)
var (
2015-06-08 12:50:11 +00:00
// mapping between methods and handlers
2015-06-08 10:43:58 +00:00
Web3Mapping = map[string]web3handler{
2015-06-09 14:06:51 +00:00
"web3_sha3": (*web3Api).Sha3,
"web3_clientVersion": (*web3Api).ClientVersion,
2015-06-08 10:43:58 +00:00
}
)
// web3 callback handler
2015-06-09 14:06:51 +00:00
type web3handler func(*web3Api, *shared.Request) (interface{}, error)
2015-06-08 10:43:58 +00:00
// web3 api provider
2015-06-09 14:06:51 +00:00
type web3Api struct {
2015-06-08 10:43:58 +00:00
xeth *xeth.XEth
methods map[string]web3handler
codec codec.ApiCoder
}
// create a new web3 api instance
2015-06-09 14:06:51 +00:00
func NewWeb3Api(xeth *xeth.XEth, coder codec.Codec) *web3Api {
return &web3Api{
2015-06-08 10:43:58 +00:00
xeth: xeth,
methods: Web3Mapping,
codec: coder.New(nil),
}
}
// collection with supported methods
2015-06-09 14:06:51 +00:00
func (self *web3Api) Methods() []string {
2015-06-08 10:43:58 +00:00
methods := make([]string, len(self.methods))
i := 0
for k := range self.methods {
methods[i] = k
i++
}
return methods
}
// Execute given request
2015-06-09 14:06:51 +00:00
func (self *web3Api) Execute(req *shared.Request) (interface{}, error) {
2015-06-08 10:43:58 +00:00
if callback, ok := self.methods[req.Method]; ok {
return callback(self, req)
}
return nil, &shared.NotImplementedError{req.Method}
}
2015-06-09 14:06:51 +00:00
func (self *web3Api) Name() string {
2015-06-22 10:47:32 +00:00
return shared.Web3ApiName
2015-06-08 10:43:58 +00:00
}
2015-06-08 10:43:58 +00:00
func (self *web3Api) ApiVersion() string {
return Web3ApiVersion
2015-06-08 10:43:58 +00:00
}
// Calculates the sha3 over req.Params.Data
2015-06-09 14:06:51 +00:00
func (self *web3Api) Sha3(req *shared.Request) (interface{}, error) {
2015-06-08 10:43:58 +00:00
args := new(Sha3Args)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, err
}
return common.ToHex(crypto.Sha3(common.FromHex(args.Data))), nil
}
// returns the xeth client vrsion
2015-06-09 14:06:51 +00:00
func (self *web3Api) ClientVersion(req *shared.Request) (interface{}, error) {
2015-06-08 10:43:58 +00:00
return self.xeth.ClientVersion(), nil
}