forked from celo-org/celo-blockchain
-
Notifications
You must be signed in to change notification settings - Fork 0
/
consolecmd.go
221 lines (197 loc) · 6.89 KB
/
consolecmd.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
// Copyright 2016 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"os"
"os/signal"
"path/filepath"
"strings"
"syscall"
"github.com/aaronwinter/celo-blockchain/cmd/utils"
"github.com/aaronwinter/celo-blockchain/console"
"github.com/aaronwinter/celo-blockchain/node"
"github.com/aaronwinter/celo-blockchain/rpc"
"gopkg.in/urfave/cli.v1"
)
var (
consoleFlags = []cli.Flag{utils.JSpathFlag, utils.ExecFlag, utils.PreloadJSFlag}
consoleCommand = cli.Command{
Action: utils.MigrateFlags(localConsole),
Name: "console",
Usage: "Start an interactive JavaScript environment",
Flags: append(append(append(nodeFlags, rpcFlags...), consoleFlags...), whisperFlags...),
Category: "CONSOLE COMMANDS",
Description: `
The Geth console is an interactive shell for the JavaScript runtime environment
which exposes a node admin interface as well as the Ðapp JavaScript API.
See https://github.com/aaronwinter/celo-blockchain/wiki/JavaScript-Console.`,
}
attachCommand = cli.Command{
Action: utils.MigrateFlags(remoteConsole),
Name: "attach",
Usage: "Start an interactive JavaScript environment (connect to node)",
ArgsUsage: "[endpoint]",
Flags: append(consoleFlags, utils.DataDirFlag),
Category: "CONSOLE COMMANDS",
Description: `
The Geth console is an interactive shell for the JavaScript runtime environment
which exposes a node admin interface as well as the Ðapp JavaScript API.
See https://github.com/aaronwinter/celo-blockchain/wiki/JavaScript-Console.
This command allows to open a console on a running geth node.`,
}
javascriptCommand = cli.Command{
Action: utils.MigrateFlags(ephemeralConsole),
Name: "js",
Usage: "Execute the specified JavaScript files",
ArgsUsage: "<jsfile> [jsfile...]",
Flags: append(nodeFlags, consoleFlags...),
Category: "CONSOLE COMMANDS",
Description: `
The JavaScript VM exposes a node admin interface as well as the Ðapp
JavaScript API. See https://github.com/aaronwinter/celo-blockchain/wiki/JavaScript-Console`,
}
)
// localConsole starts a new geth node, attaching a JavaScript console to it at the
// same time.
func localConsole(ctx *cli.Context) error {
// Create and start the node based on the CLI flags
prepare(ctx)
stack, backend := makeFullNode(ctx)
startNode(ctx, stack, backend)
defer stack.Close()
// Attach to the newly started node and start the JavaScript console
client, err := stack.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc geth: %v", err)
}
config := console.Config{
DataDir: utils.MakeDataDir(ctx),
DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
Client: client,
Preload: utils.MakeConsolePreloads(ctx),
}
console, err := console.New(config)
if err != nil {
utils.Fatalf("Failed to start the JavaScript console: %v", err)
}
defer console.Stop(false)
// If only a short execution was requested, evaluate and return
if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
console.Evaluate(script)
return nil
}
// Otherwise print the welcome screen and enter interactive mode
console.Welcome()
console.Interactive()
return nil
}
// remoteConsole will connect to a remote geth instance, attaching a JavaScript
// console to it.
func remoteConsole(ctx *cli.Context) error {
// Attach to a remotely running geth instance and start the JavaScript console
endpoint := ctx.Args().First()
if endpoint == "" {
path := node.DefaultDataDir()
if ctx.GlobalIsSet(utils.DataDirFlag.Name) {
path = ctx.GlobalString(utils.DataDirFlag.Name)
}
if path != "" {
if ctx.GlobalBool(utils.BaklavaFlag.Name) {
path = filepath.Join(path, "baklava")
} else if ctx.GlobalBool(utils.AlfajoresFlag.Name) {
path = filepath.Join(path, "alfajores")
}
}
endpoint = fmt.Sprintf("%s/geth.ipc", path)
}
client, err := dialRPC(endpoint)
if err != nil {
utils.Fatalf("Unable to attach to remote geth: %v", err)
}
config := console.Config{
DataDir: utils.MakeDataDir(ctx),
DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
Client: client,
Preload: utils.MakeConsolePreloads(ctx),
}
console, err := console.New(config)
if err != nil {
utils.Fatalf("Failed to start the JavaScript console: %v", err)
}
defer console.Stop(false)
if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
console.Evaluate(script)
return nil
}
// Otherwise print the welcome screen and enter interactive mode
console.Welcome()
console.Interactive()
return nil
}
// dialRPC returns a RPC client which connects to the given endpoint.
// The check for empty endpoint implements the defaulting logic
// for "geth attach" and "geth monitor" with no argument.
func dialRPC(endpoint string) (*rpc.Client, error) {
if endpoint == "" {
endpoint = node.DefaultIPCEndpoint(clientIdentifier)
} else if strings.HasPrefix(endpoint, "rpc:") || strings.HasPrefix(endpoint, "ipc:") {
// Backwards compatibility with geth < 1.5 which required
// these prefixes.
endpoint = endpoint[4:]
}
return rpc.Dial(endpoint)
}
// ephemeralConsole starts a new geth node, attaches an ephemeral JavaScript
// console to it, executes each of the files specified as arguments and tears
// everything down.
func ephemeralConsole(ctx *cli.Context) error {
// Create and start the node based on the CLI flags
stack, backend := makeFullNode(ctx)
startNode(ctx, stack, backend)
defer stack.Close()
// Attach to the newly started node and start the JavaScript console
client, err := stack.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc geth: %v", err)
}
config := console.Config{
DataDir: utils.MakeDataDir(ctx),
DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
Client: client,
Preload: utils.MakeConsolePreloads(ctx),
}
console, err := console.New(config)
if err != nil {
utils.Fatalf("Failed to start the JavaScript console: %v", err)
}
defer console.Stop(false)
// Evaluate each of the specified JavaScript files
for _, file := range ctx.Args() {
if err = console.Execute(file); err != nil {
utils.Fatalf("Failed to execute %s: %v", file, err)
}
}
// Wait for pending callbacks, but stop for Ctrl-C.
abort := make(chan os.Signal, 1)
signal.Notify(abort, syscall.SIGINT, syscall.SIGTERM)
go func() {
<-abort
os.Exit(0)
}()
console.Stop(true)
return nil
}