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Implement broadcast command/REST endpoint to submit transactions generated offline with --generated-only and the sign command. Closes: #1954
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Alessio Treglia
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Sep 8, 2018
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package cli | ||
|
|
||
| import ( | ||
| "io/ioutil" | ||
| "os" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/client/context" | ||
| "github.com/cosmos/cosmos-sdk/x/auth" | ||
| "github.com/spf13/cobra" | ||
| amino "github.com/tendermint/go-amino" | ||
| ) | ||
|
|
||
| // GetSignCommand returns the sign command | ||
| func GetBroadcastCommand(codec *amino.Codec) *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "broadcast <file>", | ||
| Short: "Broadcast transactions generated offline", | ||
| Long: `Broadcast transactions created with the --generate-only flag and signed with the sign command. | ||
| Read a transaction from <file> and broadcast it to a node.`, | ||
| Args: cobra.ExactArgs(1), | ||
| RunE: func(cmd *cobra.Command, args []string) (err error) { | ||
| cliCtx := context.NewCLIContext().WithCodec(codec).WithLogger(os.Stdout) | ||
| stdTx, err := readAndUnmarshalStdTx(cliCtx.Codec, args[0]) | ||
| if err != nil { | ||
| return | ||
| } | ||
| txBytes, err := cliCtx.Codec.MarshalBinary(stdTx) | ||
| if err != nil { | ||
| return | ||
| } | ||
| return cliCtx.EnsureBroadcastTx(txBytes) | ||
| }, | ||
| } | ||
| return cmd | ||
| } | ||
|
|
||
| func readAndUnmarshalStdTx(cdc *amino.Codec, filename string) (stdTx auth.StdTx, err error) { | ||
| var bytes []byte | ||
| if bytes, err = ioutil.ReadFile(filename); err != nil { | ||
| return | ||
| } | ||
| if err = cdc.UnmarshalJSON(bytes, &stdTx); err != nil { | ||
| return | ||
| } | ||
| return | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| package rest | ||
|
|
||
| import ( | ||
| "io/ioutil" | ||
| "net/http" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/client/context" | ||
| "github.com/cosmos/cosmos-sdk/client/utils" | ||
| "github.com/cosmos/cosmos-sdk/wire" | ||
| "github.com/cosmos/cosmos-sdk/x/auth" | ||
| ) | ||
|
|
||
| type broadcastBody struct { | ||
| Tx auth.StdTx `json:"tx"` | ||
| } | ||
|
|
||
| // BroadcastTxRequestHandlerFn returns the broadcast tx REST handler | ||
| func BroadcastTxRequestHandlerFn(cdc *wire.Codec, cliCtx context.CLIContext) http.HandlerFunc { | ||
| return func(w http.ResponseWriter, r *http.Request) { | ||
| var m broadcastBody | ||
| if ok := unmarshalBodyOrReturnBadRequest(cliCtx, w, r, &m); !ok { | ||
| return | ||
| } | ||
|
|
||
| txBytes, err := cliCtx.Codec.MarshalBinary(m.Tx) | ||
| if err != nil { | ||
| utils.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) | ||
| return | ||
| } | ||
| res, err := cliCtx.BroadcastTx(txBytes) | ||
| if err != nil { | ||
| utils.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) | ||
| return | ||
| } | ||
|
|
||
| output, err := wire.MarshalJSONIndent(cdc, res) | ||
| if err != nil { | ||
| utils.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) | ||
| return | ||
| } | ||
| w.Write(output) | ||
| } | ||
| } | ||
|
|
||
| func unmarshalBodyOrReturnBadRequest(cliCtx context.CLIContext, w http.ResponseWriter, r *http.Request, m *broadcastBody) bool { | ||
| body, err := ioutil.ReadAll(r.Body) | ||
| if err != nil { | ||
| utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) | ||
| return false | ||
| } | ||
| err = cliCtx.Codec.UnmarshalJSON(body, m) | ||
| if err != nil { | ||
| utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) | ||
| return false | ||
| } | ||
| return true | ||
| } |
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