mirror of https://github.com/ethereum/go-ethereum
Merge pull request #2175 from karalabe/refactor-http-rpc
cmd, common, node, rpc: move HTTP RPC into node, drop singleton aspectpull/2210/head
Péter Szilágyi
9 years ago
commit
770b29fd80
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// Copyright 2016 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 common |
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import ( |
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"path/filepath" |
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"runtime" |
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) |
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const ( |
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DefaultIPCSocket = "geth.ipc" // Default (relative) name of the IPC RPC socket
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DefaultHTTPHost = "localhost" // Default host interface for the HTTP RPC server
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DefaultHTTPPort = 8545 // Default TCP port for the HTTP RPC server
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DefaultWSHost = "localhost" // Default host interface for the websocket RPC server
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DefaultWSPort = 8546 // Default TCP port for the websocket RPC server
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) |
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// DefaultDataDir is the default data directory to use for the databases and other
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// persistence requirements.
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func DefaultDataDir() string { |
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// Try to place the data folder in the user's home dir
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home := HomeDir() |
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if home != "" { |
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if runtime.GOOS == "darwin" { |
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return filepath.Join(home, "Library", "Ethereum") |
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} else if runtime.GOOS == "windows" { |
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return filepath.Join(home, "AppData", "Roaming", "Ethereum") |
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} else { |
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return filepath.Join(home, ".ethereum") |
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} |
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} |
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// As we cannot guess a stable location, return empty and handle later
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return "" |
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} |
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@ -0,0 +1,111 @@ |
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// Copyright 2016 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 rpc |
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import "encoding/json" |
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// NewInProcRPCClient creates an in-process buffer stream attachment to a given
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// RPC server.
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func NewInProcRPCClient(handler *Server) Client { |
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buffer := &inprocBuffer{ |
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requests: make(chan []byte, 16), |
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responses: make(chan []byte, 16), |
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} |
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client := &inProcClient{ |
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server: handler, |
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buffer: buffer, |
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} |
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go handler.ServeCodec(NewJSONCodec(client.buffer)) |
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return client |
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} |
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// inProcClient is an in-process buffer stream attached to an RPC server.
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type inProcClient struct { |
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server *Server |
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buffer *inprocBuffer |
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} |
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// Close tears down the request channel of the in-proc client.
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func (c *inProcClient) Close() { |
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c.buffer.Close() |
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} |
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// Send marshals a message into a json format and injects in into the client
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// request channel.
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func (c *inProcClient) Send(msg interface{}) error { |
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d, err := json.Marshal(msg) |
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if err != nil { |
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return err |
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} |
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c.buffer.requests <- d |
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return nil |
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} |
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// Recv reads a message from the response channel and tries to parse it into the
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// given msg interface.
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func (c *inProcClient) Recv(msg interface{}) error { |
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data := <-c.buffer.responses |
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return json.Unmarshal(data, &msg) |
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} |
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// Returns the collection of modules the RPC server offers.
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func (c *inProcClient) SupportedModules() (map[string]string, error) { |
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return SupportedModules(c) |
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} |
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// inprocBuffer represents the connection between the RPC server and console
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type inprocBuffer struct { |
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readBuf []byte // store remaining request bytes after a partial read
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requests chan []byte // list with raw serialized requests
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responses chan []byte // list with raw serialized responses
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} |
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// Read will read the next request in json format.
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func (b *inprocBuffer) Read(p []byte) (int, error) { |
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// last read didn't read entire request, return remaining bytes
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if len(b.readBuf) > 0 { |
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n := copy(p, b.readBuf) |
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if n < len(b.readBuf) { |
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b.readBuf = b.readBuf[:n] |
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} else { |
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b.readBuf = b.readBuf[:0] |
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} |
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return n, nil |
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} |
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// read next request
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req := <-b.requests |
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n := copy(p, req) |
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if n < len(req) { |
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// inprocBuffer too small, store remaining chunk for next read
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b.readBuf = req[n:] |
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} |
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return n, nil |
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} |
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// Write sends the given buffer to the backend.
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func (b *inprocBuffer) Write(p []byte) (n int, err error) { |
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b.responses <- p |
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return len(p), nil |
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} |
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// Close cleans up obtained resources.
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func (b *inprocBuffer) Close() error { |
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close(b.requests) |
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close(b.responses) |
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return nil |
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} |
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