lotus/cmd/lotus-shed/rpc.go
2020-11-02 20:38:15 +01:00

137 lines
2.5 KiB
Go

package main
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"strings"
"text/scanner"
"github.com/chzyer/readline"
"github.com/urfave/cli/v2"
"golang.org/x/xerrors"
lcli "github.com/filecoin-project/lotus/cli"
"github.com/filecoin-project/lotus/node/repo"
)
var rpcCmd = &cli.Command{
Name: "rpc",
Usage: "Interactive JsonPRC shell",
// TODO: flag for miner/worker
Action: func(cctx *cli.Context) error {
addr, headers, err := lcli.GetRawAPI(cctx, repo.FullNode)
if err != nil {
return err
}
u, err := url.Parse(addr)
if err != nil {
return xerrors.Errorf("parsing api URL: %w", err)
}
switch u.Scheme {
case "ws":
u.Scheme = "http"
case "wss":
u.Scheme = "https"
}
addr = u.String()
ctx := lcli.ReqContext(cctx)
ctx, cancel := context.WithCancel(ctx)
defer cancel()
afmt := lcli.NewAppFmt(cctx.App)
cs := readline.NewCancelableStdin(afmt.Stdin)
go func() {
<-ctx.Done()
cs.Close() // nolint:errcheck
}()
cctx.App.Metadata["repoType"] = repo.FullNode
if err := lcli.VersionCmd.Action(cctx); err != nil {
return err
}
fmt.Println("Usage: > Method [Param1, Param2, ...]")
rl, err := readline.NewEx(&readline.Config{
Stdin: cs,
HistoryFile: "/tmp/lotusrpc.tmp",
Prompt: "> ",
EOFPrompt: "exit",
HistorySearchFold: true,
// TODO: Some basic auto completion
})
if err != nil {
return err
}
for {
line, err := rl.Readline()
if err == readline.ErrInterrupt {
if len(line) == 0 {
break
} else {
continue
}
} else if err == io.EOF {
break
}
var s scanner.Scanner
s.Init(strings.NewReader(line))
s.Scan()
method := s.TokenText()
s.Scan()
params := line[s.Position.Offset:]
jreq, err := json.Marshal(struct {
Jsonrpc string `json:"jsonrpc"`
ID int `json:"id"`
Method string `json:"method"`
Params json.RawMessage `json:"params"`
}{
Jsonrpc: "2.0",
Method: "Filecoin." + method,
Params: json.RawMessage(params),
ID: 0,
})
if err != nil {
return err
}
req, err := http.NewRequest("POST", addr, bytes.NewReader(jreq))
if err != nil {
return err
}
req.Header = headers
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
rb, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
fmt.Println(string(rb))
if err := resp.Body.Close(); err != nil {
return err
}
}
return nil
},
}