87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package api
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import (
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/rpc/shared"
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)
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const (
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MergedApiVersion = "1.0"
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)
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// combines multiple API's
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type MergedApi struct {
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apis map[string]string
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methods map[string]shared.EthereumApi
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}
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// create new merged api instance
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func newMergedApi(apis ...shared.EthereumApi) *MergedApi {
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mergedApi := new(MergedApi)
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mergedApi.apis = make(map[string]string, len(apis))
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mergedApi.methods = make(map[string]shared.EthereumApi)
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for _, api := range apis {
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mergedApi.apis[api.Name()] = api.ApiVersion()
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for _, method := range api.Methods() {
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mergedApi.methods[method] = api
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}
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}
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return mergedApi
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}
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// Supported RPC methods
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func (self *MergedApi) Methods() []string {
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all := make([]string, len(self.methods))
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for method, _ := range self.methods {
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all = append(all, method)
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}
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return all
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}
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// Call the correct API's Execute method for the given request
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func (self *MergedApi) Execute(req *shared.Request) (interface{}, error) {
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glog.V(logger.Detail).Infof("%s %s", req.Method, req.Params)
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if res, _ := self.handle(req); res != nil {
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return res, nil
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}
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if api, found := self.methods[req.Method]; found {
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return api.Execute(req)
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}
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return nil, shared.NewNotImplementedError(req.Method)
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}
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func (self *MergedApi) Name() string {
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return shared.MergedApiName
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}
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func (self *MergedApi) ApiVersion() string {
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return MergedApiVersion
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}
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func (self *MergedApi) handle(req *shared.Request) (interface{}, error) {
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if req.Method == "modules" { // provided API's
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return self.apis, nil
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}
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return nil, nil
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}
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