2017-12-30 16:45:53 -08:00
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package main
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import (
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"bytes"
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"fmt"
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"os"
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"github.com/tendermint/abci/server"
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cmn "github.com/tendermint/tmlibs/common"
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dbm "github.com/tendermint/tmlibs/db"
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"github.com/cosmos/cosmos-sdk/app"
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"github.com/cosmos/cosmos-sdk/store"
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"github.com/cosmos/cosmos-sdk/types"
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)
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func main() {
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app := app.NewApp("dummy")
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db, err := dbm.NewGoLevelDB("dummy", "dummy-data")
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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// create CommitStoreLoader
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cacheSize := 10000
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numHistory := int64(100)
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loader := store.NewIAVLStoreLoader(db, cacheSize, numHistory)
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// Create MultiStore
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2018-01-06 12:31:48 -08:00
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multiStore := store.NewCommitMultiStore(db)
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2017-12-30 16:45:53 -08:00
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multiStore.SetSubstoreLoader("main", loader)
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// Create Handler
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handler := types.Decorate(unmarshalDecorator, dummyHandler)
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// Set everything on the app and load latest
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app.SetCommitMultiStore(multiStore)
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app.SetHandler(handler)
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if err := app.LoadLatestVersion(); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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// Start the ABCI server
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srv, err := server.NewServer("0.0.0.0:46658", "socket", app)
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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srv.Start()
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// Wait forever
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cmn.TrapSignal(func() {
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// Cleanup
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srv.Stop()
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})
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return
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}
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type dummyTx struct {
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key []byte
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value []byte
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bytes []byte
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}
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func (tx dummyTx) Get(key interface{}) (value interface{}) {
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switch k := key.(type) {
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case string:
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switch k {
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case "key":
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return tx.key
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case "value":
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return tx.value
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}
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}
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return nil
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}
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func (tx dummyTx) SignBytes() []byte {
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return tx.bytes
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}
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// Should the app be calling this? Or only handlers?
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func (tx dummyTx) ValidateBasic() error {
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return nil
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}
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2018-01-06 12:31:48 -08:00
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func (tx dummyTx) Signers() []types.Address {
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2017-12-30 16:45:53 -08:00
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return nil
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}
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func (tx dummyTx) TxBytes() []byte {
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return tx.bytes
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}
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func (tx dummyTx) Signatures() []types.StdSignature {
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return nil
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}
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func unmarshalDecorator(ctx types.Context, ms types.MultiStore, tx types.Tx, next types.Handler) types.Result {
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txBytes := ctx.TxBytes()
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split := bytes.Split(txBytes, []byte("="))
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if len(split) == 1 {
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k := split[0]
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tx = dummyTx{k, k, txBytes}
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} else if len(split) == 2 {
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k, v := split[0], split[1]
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tx = dummyTx{k, v, txBytes}
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} else {
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return types.Result{
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Code: 1,
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Log: "too many =",
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}
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}
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return next(ctx, ms, tx)
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}
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func dummyHandler(ctx types.Context, ms types.MultiStore, tx types.Tx) types.Result {
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// tx is already unmarshalled
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key := tx.Get("key").([]byte)
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value := tx.Get("value").([]byte)
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main := ms.GetKVStore("main")
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main.Set(key, value)
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return types.Result{
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Code: 0,
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Log: fmt.Sprintf("set %s=%s", key, value),
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}
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}
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