2019-09-20 21:27:40 +00:00
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package main
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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logging "github.com/ipfs/go-log"
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"golang.org/x/xerrors"
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"gopkg.in/urfave/cli.v2"
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"github.com/filecoin-project/go-lotus/api"
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"github.com/filecoin-project/go-lotus/build"
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"github.com/filecoin-project/go-lotus/chain/address"
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"github.com/filecoin-project/go-lotus/chain/types"
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lcli "github.com/filecoin-project/go-lotus/cli"
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)
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var log = logging.Logger("main")
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2019-09-25 18:40:10 +00:00
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var sendPerRequest = types.NewInt(500_000_000)
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2019-09-20 21:27:40 +00:00
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func main() {
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logging.SetLogLevel("*", "INFO")
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log.Info("Starting fountain")
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local := []*cli.Command{
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runCmd,
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}
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app := &cli.App{
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Name: "lotus-fountain",
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Usage: "Devnet token distribution utility",
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Version: build.Version,
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Flags: []cli.Flag{
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&cli.StringFlag{
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Name: "repo",
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EnvVars: []string{"LOTUS_PATH"},
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Value: "~/.lotus", // TODO: Consider XDG_DATA_HOME
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},
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},
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Commands: local,
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}
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if err := app.Run(os.Args); err != nil {
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log.Warn(err)
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return
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}
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}
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var runCmd = &cli.Command{
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Name: "run",
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Usage: "Start lotus fountain",
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Flags: []cli.Flag{
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&cli.StringFlag{
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Name: "front",
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Value: "127.0.0.1:7777",
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},
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&cli.StringFlag{
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Name: "from",
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},
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},
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Action: func(cctx *cli.Context) error {
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nodeApi, err := lcli.GetFullNodeAPI(cctx)
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if err != nil {
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return err
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}
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ctx := lcli.ReqContext(cctx)
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v, err := nodeApi.Version(ctx)
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if err != nil {
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return err
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}
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log.Info("Remote version: %s", v.Version)
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from, err := address.NewFromString(cctx.String("from"))
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if err != nil {
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return xerrors.Errorf("parsing source address (provide correct --from flag!): %w", err)
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}
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h := &handler{
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ctx: ctx,
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api: nodeApi,
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from: from,
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}
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http.HandleFunc("/", h.index)
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http.HandleFunc("/send", h.send)
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fmt.Printf("Open http://%s\n", cctx.String("front"))
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go func() {
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<-ctx.Done()
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os.Exit(0)
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}()
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return http.ListenAndServe(cctx.String("front"), nil)
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},
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}
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type handler struct {
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ctx context.Context
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api api.FullNode
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from address.Address
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}
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func (h *handler) index(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintf(w, "<!DOCTYPE html>\n<html><head><title>Lotus Fountain</title><style>body {font-family: 'monospace';}</style></head><body>")
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fmt.Fprintf(w, "<form action='/send' method='get'>Enter destination address: ")
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fmt.Fprintf(w, "<input type='text' name='address'><br><button type='submit'>Send</button>")
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fmt.Fprintf(w, "</form></body></html>")
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}
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func (h *handler) send(w http.ResponseWriter, r *http.Request) {
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to, err := address.NewFromString(r.FormValue("address"))
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if err != nil {
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w.WriteHeader(400)
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w.Write([]byte(err.Error()))
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return
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}
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smsg, err := h.api.MpoolPushMessage(h.ctx, &types.Message{
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Value: sendPerRequest,
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From: h.from,
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To: to,
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GasPrice: types.NewInt(0),
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GasLimit: types.NewInt(1000),
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})
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if err != nil {
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w.WriteHeader(400)
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w.Write([]byte(err.Error()))
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return
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}
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w.Write([]byte(smsg.Cid().String()))
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}
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