op-geth/rpc/comms/inproc.go

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// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
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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
// 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,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// 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/>.
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package comms
import (
"fmt"
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"github.com/ethereum/go-ethereum/rpc/codec"
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"github.com/ethereum/go-ethereum/rpc/shared"
)
type InProcClient struct {
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api shared.EthereumApi
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codec codec.Codec
lastId interface{}
lastJsonrpc string
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lastErr error
lastRes interface{}
}
// Create a new in process client
func NewInProcClient(codec codec.Codec) *InProcClient {
return &InProcClient{
codec: codec,
}
}
func (self *InProcClient) Close() {
// do nothing
}
// Need to setup api support
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func (self *InProcClient) Initialize(offeredApi shared.EthereumApi) {
self.api = offeredApi
}
func (self *InProcClient) Send(req interface{}) error {
if r, ok := req.(*shared.Request); ok {
self.lastId = r.Id
self.lastJsonrpc = r.Jsonrpc
self.lastRes, self.lastErr = self.api.Execute(r)
return self.lastErr
}
return fmt.Errorf("Invalid request (%T)", req)
}
func (self *InProcClient) Recv() (interface{}, error) {
return self.lastRes, self.lastErr
}
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func (self *InProcClient) SupportedModules() (map[string]string, error) {
req := shared.Request{
Id: 1,
Jsonrpc: "2.0",
Method: "modules",
}
if res, err := self.api.Execute(&req); err == nil {
if result, ok := res.(map[string]string); ok {
return result, nil
}
} else {
return nil, err
}
return nil, fmt.Errorf("Invalid response")
}