-
Notifications
You must be signed in to change notification settings - Fork 459
/
utils.go
243 lines (209 loc) · 6.1 KB
/
utils.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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
package cmd
import (
"bytes"
"context"
"fmt"
"io"
"os"
"os/signal"
"syscall"
"time"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/abi"
"github.com/hako/durafmt"
"github.com/ipfs/go-cid"
cmds "github.com/ipfs/go-ipfs-cmds"
"github.com/pkg/errors"
"github.com/filecoin-project/venus/app/node"
"github.com/filecoin-project/venus/venus-shared/types"
)
// SilentWriter writes to a stream, stopping after the first error and discarding output until
// the error is cleared.
// No printing methods return an error (to avoid warnings about ignoring it), but they do return
// a boolean indicating whether an error is waiting to be cleared.
// Example usage:
//
// sw := NewSilentWriter(w)
// sw.Println("A line")
// sw.Println("Another line")
// return sw.Error()
type SilentWriter struct {
w io.Writer
err error
}
// NewSilentWriter returns a new writer backed by `w`.
func NewSilentWriter(w io.Writer) *SilentWriter {
return &SilentWriter{w: w}
}
// Error returns any error encountered while writing.
func (sw *SilentWriter) Error() error {
return sw.err
}
// ClearError clears and returns any error encountered while writing.
// Subsequent writes will attempt to write to the underlying writer again.
func (sw *SilentWriter) ClearError() error {
err := sw.err
sw.err = nil
return err
}
// Write writes with io.Writer.Write and returns true if there was no error.
func (sw *SilentWriter) Write(p []byte) bool {
if sw.err == nil {
_, sw.err = sw.w.Write(p)
}
return sw.err == nil
}
// WriteString writes with io.WriteString and returns true if there was no error.
func (sw *SilentWriter) WriteString(str string) bool {
if sw.err == nil {
_, sw.err = io.WriteString(sw.w, str)
}
return sw.err == nil
}
// WriteStringln writes with io.WriteString and returns true if there was no error.
func (sw *SilentWriter) WriteStringln(str string) bool {
if sw.err == nil {
_, sw.err = io.WriteString(sw.w, str+"\n")
}
return sw.err == nil
}
// Print writes with fmt.Fprint and returns true if there was no error.
func (sw *SilentWriter) Print(a ...interface{}) bool {
if sw.err == nil {
_, sw.err = fmt.Fprint(sw.w, a...)
}
return sw.err == nil
}
// Println writes with fmt.Fprintln and returns true if there was no error.
func (sw *SilentWriter) Println(a ...interface{}) bool {
if sw.err == nil {
_, sw.err = fmt.Fprintln(sw.w, a...)
}
return sw.err == nil
}
// Printf writes with fmt.Fprintf and returns true if there was no error.
func (sw *SilentWriter) Printf(format string, a ...interface{}) bool {
if sw.err == nil {
_, sw.err = fmt.Fprintf(sw.w, format, a...)
}
return sw.err == nil
}
// PrintString prints a given Stringer to the writer.
func PrintString(w io.Writer, s fmt.Stringer) error {
_, err := fmt.Fprintln(w, s.String())
return err
}
func optionalAddr(o interface{}) (ret address.Address, err error) {
if o != nil {
ret, err = address.NewFromString(o.(string))
if err != nil {
err = errors.Wrap(err, "invalid from address")
}
}
return
}
func fromAddrOrDefault(req *cmds.Request, env cmds.Environment) (address.Address, error) {
addr, err := optionalAddr(req.Options["from"])
if err != nil {
return address.Undef, err
}
if addr.Empty() {
return env.(*node.Env).WalletAPI.WalletDefaultAddress(req.Context)
}
return addr, nil
}
func cidsFromSlice(args []string) ([]cid.Cid, error) {
out := make([]cid.Cid, len(args))
for i, arg := range args {
c, err := cid.Decode(arg)
if err != nil {
return nil, err
}
out[i] = c
}
return out, nil
}
func getBlockDelay(ctx context.Context, env cmds.Environment) (uint64, error) {
params, err := env.(*node.Env).ChainAPI.StateGetNetworkParams(ctx)
if err != nil {
return 0, err
}
return params.BlockDelaySecs, nil
}
func EpochTime(curr, e abi.ChainEpoch, blockDelay uint64) string {
switch {
case curr > e:
return fmt.Sprintf("%d (%s ago)", e, durafmt.Parse(time.Second*time.Duration(int64(blockDelay)*int64(curr-e))).LimitFirstN(2))
case curr == e:
return fmt.Sprintf("%d (now)", e)
case curr < e:
return fmt.Sprintf("%d (in %s)", e, durafmt.Parse(time.Second*time.Duration(int64(blockDelay)*int64(e-curr))).LimitFirstN(2))
}
panic("math broke")
}
// EpochTimeTs is like EpochTime, but also outputs absolute time. `ts` is only
// used to provide a timestamp at some epoch to calculate time from. It can be
// a genesis tipset.
//
// Example output: `1944975 (01 Jul 22 08:07 CEST, 10 hours 29 minutes ago)`
func EpochTimeTs(curr, e abi.ChainEpoch, blockDelay uint64, ts *types.TipSet) string {
timeStr := time.Unix(int64(ts.MinTimestamp()+(uint64(e-ts.Height())*blockDelay)), 0).Format(time.RFC822)
switch {
case curr > e:
return fmt.Sprintf("%d (%s, %s ago)", e, timeStr, durafmt.Parse(time.Second*time.Duration(int64(blockDelay)*int64(curr-e))).LimitFirstN(2))
case curr == e:
return fmt.Sprintf("%d (%s, now)", e, timeStr)
case curr < e:
return fmt.Sprintf("%d (%s, in %s)", e, timeStr, durafmt.Parse(time.Second*time.Duration(int64(blockDelay)*int64(e-curr))).LimitFirstN(2))
}
panic("math broke")
}
func printOneString(re cmds.ResponseEmitter, str string) error {
buf := new(bytes.Buffer)
writer := NewSilentWriter(buf)
writer.Println(str)
return re.Emit(buf)
}
func ReqContext(cctx context.Context) context.Context {
var (
ctx context.Context
done context.CancelFunc
)
if cctx != nil {
ctx = cctx
} else {
ctx = context.Background()
}
ctx, done = context.WithCancel(ctx)
sigChan := make(chan os.Signal, 2)
go func() {
<-sigChan
done()
}()
signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT, syscall.SIGHUP)
return ctx
}
func isController(mi types.MinerInfo, addr address.Address) bool {
if addr == mi.Owner || addr == mi.Worker {
return true
}
for _, ca := range mi.ControlAddresses {
if addr == ca {
return true
}
}
return false
}
func getEnv(env cmds.Environment) *node.Env {
return env.(*node.Env)
}
func requestContext(req *cmds.Request) context.Context {
ctx, cancel := context.WithCancel(req.Context)
sig := make(chan os.Signal, 2)
go func() {
<-sig
cancel()
}()
signal.Notify(sig, syscall.SIGTERM, syscall.SIGINT, syscall.SIGHUP)
return ctx
}