Merge pull request #6433 from filecoin-project/feat/rpc-cmd

feat: add rpc command

Author: simlecode

cmd/main.go

@@ -140,6 +140,7 @@ TOOL COMMANDS
   version                - Show venus version information
   seed                   - Seal sectors for genesis miner
   fetch                  - Fetch proving parameters
+  rpc                    - Interact with the jsonrpc api
 `,
 	},
 	Options: []cmds.Option{
@@ -165,6 +166,7 @@ var rootSubcmdsLocal = map[string]*cmds.Command{
 	"version": versionCmd,
 	"seed":    seedCmd,
 	"cid":     cidCmd,
+	"rpc":     rpcCmd,
 }
 
 // all top level commands, available on daemon. set during init() to avoid configuration loops.

cmd/rpc.go

@@ -0,0 +1,115 @@
+package cmd
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/url"
+
+	"github.com/filecoin-project/venus/app/paths"
+	"github.com/filecoin-project/venus/pkg/repo"
+	"github.com/filecoin-project/venus/venus-shared/api"
+	v1 "github.com/filecoin-project/venus/venus-shared/api/chain/v1"
+	cmds "github.com/ipfs/go-ipfs-cmds"
+	"golang.org/x/xerrors"
+)
+
+var rpcCmd = &cmds.Command{
+	Helptext: cmds.HelpText{
+		Tagline: "Interactive JsonPRC shell",
+	},
+	Arguments: []cmds.Argument{
+		cmds.StringArg("method", true, false, "method name"),
+		cmds.StringArg("params", false, false, "method params"),
+	},
+	Run: func(req *cmds.Request, re cmds.ResponseEmitter, env cmds.Environment) error {
+		repoDir, _ := req.Options[OptionRepoDir].(string)
+		repoDir, err := paths.GetRepoPath(repoDir)
+		if err != nil {
+			return err
+		}
+		addr, err := repo.APIAddrFromRepoPath(repoDir)
+		if err != nil {
+			return err
+		}
+		token, err := repo.APITokenFromRepoPath(repoDir)
+		if err != nil {
+			return err
+		}
+
+		ai := api.NewAPIInfo(addr, token)
+		addr, err = ai.DialArgs(api.VerString(v1.MajorVersion))
+		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()
+
+		if len(req.Arguments) < 1 {
+			return re.Emit("method name is required.")
+		}
+		methodName := req.Arguments[0]
+		params := "[]"
+		if len(req.Arguments) > 1 {
+			params = req.Arguments[1]
+		}
+
+		res, err := send(addr, methodName, params, ai.AuthHeader())
+		if err != nil {
+			return err
+		}
+
+		return printOneString(re, res)
+	},
+}
+
+func send(addr, method, params string, headers http.Header) (string, error) {
+	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 := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	if err := resp.Body.Close(); err != nil {
+		return "", err
+	}
+
+	return string(rb), nil
+}

pkg/repo/fsrepo.go

@@ -628,7 +628,7 @@ func apiTokenFromFile(repoPath string) (string, error) {
 	tokenFile := filepath.Join(repoPath, apiToken)
 	token, err := os.ReadFile(tokenFile)
 	if err != nil {
-		return "", errors.Wrap(err, "failed to read API file")
+		return "", errors.Wrap(err, "failed to read token file")
 	}
 
 	return strings.TrimSpace(string(token)), nil