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98 lines
2.5 KiB
98 lines
2.5 KiB
package dummy
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import (
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"bytes"
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"fmt"
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"github.com/tendermint/abci/types"
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wire "github.com/tendermint/go-wire"
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"github.com/tendermint/iavl"
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dbm "github.com/tendermint/tmlibs/db"
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)
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var _ types.Application = (*DummyApplication)(nil)
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type DummyApplication struct {
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types.BaseApplication
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state *iavl.VersionedTree
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}
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func NewDummyApplication() *DummyApplication {
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state := iavl.NewVersionedTree(0, dbm.NewMemDB())
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return &DummyApplication{state: state}
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}
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func (app *DummyApplication) Info(req types.RequestInfo) (resInfo types.ResponseInfo) {
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return types.ResponseInfo{Data: fmt.Sprintf("{\"size\":%v}", app.state.Size())}
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}
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// tx is either "key=value" or just arbitrary bytes
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func (app *DummyApplication) DeliverTx(tx []byte) types.ResponseDeliverTx {
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var key, value []byte
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parts := bytes.Split(tx, []byte("="))
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if len(parts) == 2 {
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key, value = parts[0], parts[1]
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} else {
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key, value = tx, tx
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}
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app.state.Set(key, value)
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tags := []*types.KVPair{
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{Key: "app.creator", ValueType: types.KVPair_STRING, ValueString: "jae"},
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{Key: "app.key", ValueType: types.KVPair_STRING, ValueString: string(key)},
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}
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return types.ResponseDeliverTx{Code: types.CodeTypeOK, Tags: tags}
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}
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func (app *DummyApplication) CheckTx(tx []byte) types.ResponseCheckTx {
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return types.ResponseCheckTx{Code: types.CodeTypeOK}
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}
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func (app *DummyApplication) Commit() types.ResponseCommit {
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// Save a new version
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var hash []byte
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var err error
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if app.state.Size() > 0 {
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// just add one more to height (kind of arbitrarily stupid)
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height := app.state.LatestVersion() + 1
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hash, err = app.state.SaveVersion(height)
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if err != nil {
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// if this wasn't a dummy app, we'd do something smarter
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panic(err)
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}
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}
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return types.ResponseCommit{Code: types.CodeTypeOK, Data: hash}
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}
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func (app *DummyApplication) Query(reqQuery types.RequestQuery) (resQuery types.ResponseQuery) {
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if reqQuery.Prove {
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value, proof, err := app.state.GetWithProof(reqQuery.Data)
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// if this wasn't a dummy app, we'd do something smarter
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if err != nil {
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panic(err)
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}
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resQuery.Index = -1 // TODO make Proof return index
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resQuery.Key = reqQuery.Data
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resQuery.Value = value
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resQuery.Proof = wire.BinaryBytes(proof)
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if value != nil {
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resQuery.Log = "exists"
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} else {
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resQuery.Log = "does not exist"
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}
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return
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} else {
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index, value := app.state.Get(reqQuery.Data)
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resQuery.Index = int64(index)
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resQuery.Value = value
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if value != nil {
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resQuery.Log = "exists"
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} else {
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resQuery.Log = "does not exist"
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}
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return
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}
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}
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