-
Notifications
You must be signed in to change notification settings - Fork 41
/
tx_create_chain.go
84 lines (74 loc) · 1.92 KB
/
tx_create_chain.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
package cli
import (
"context"
"fmt"
"io/ioutil"
"net/http"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/flags"
"github.com/cosmos/cosmos-sdk/client/tx"
"github.com/spf13/cobra"
"github.com/tendermint/spn/x/launch/types"
)
const (
flagGenesisURL = "genesis-url"
)
func CmdCreateChain() *cobra.Command {
cmd := &cobra.Command{
Use: "create-chain [genesis-chain-id] [source-url] [source-hash]",
Short: "Create a new chain for launch",
Args: cobra.ExactArgs(3),
RunE: func(cmd *cobra.Command, args []string) error {
clientCtx, err := client.GetClientTxContext(cmd)
if err != nil {
return err
}
genesisURL, err := cmd.Flags().GetString(flagGenesisURL)
if err != nil {
return err
}
var genesisHash string
if genesisURL != "" {
genesisHash, err = getHashFromURL(cmd.Context(), genesisURL)
if err != nil {
return err
}
}
msg := types.NewMsgCreateChain(
clientCtx.GetFromAddress().String(),
args[0],
args[1],
args[2],
genesisURL,
genesisHash,
)
if err := msg.ValidateBasic(); err != nil {
return err
}
return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), msg)
},
}
cmd.Flags().String(flagGenesisURL, "", "URL for a custom genesis")
flags.AddTxFlagsToCmd(cmd)
return cmd
}
// getHashFromURL fetches content from url and returns the hash based on the genesis hash method
func getHashFromURL(ctx context.Context, url string) (string, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
if err != nil {
return "", err
}
res, err := http.DefaultClient.Do(req)
if err != nil {
return "", err
}
defer res.Body.Close()
if res.StatusCode != http.StatusOK {
return "", fmt.Errorf("genesis url fetch error %s", res.Status)
}
initialGenesis, err := ioutil.ReadAll(res.Body)
if err != nil {
return "", err
}
return types.GenesisURLHash(string(initialGenesis)), nil
}