package types import ( context "golang.org/x/net/context" ) // Applications type Application interface { // Return application info Info() (info string) // Set application option (e.g. mode=mempool, mode=consensus) SetOption(key string, value string) (log string) // Append a tx AppendTx(tx []byte) Result // Validate a tx for the mempool CheckTx(tx []byte) Result // Query for state Query(query []byte) Result // Return the application Merkle root hash Commit() Result } // Some applications can choose to implement BlockchainAware type BlockchainAware interface { // Initialize blockchain // validators: genesis validators from TendermintCore InitChain(validators []*Validator) // Signals the beginning of a block BeginBlock(height uint64) // Signals the end of a block // diffs: changed validators from app to TendermintCore EndBlock(height uint64) (diffs []*Validator) } //------------------------------------ type GRPCApplication struct { app Application } func NewGRPCApplication(app Application) *GRPCApplication { return &GRPCApplication{app} } func (app *GRPCApplication) Echo(ctx context.Context, req *RequestEcho) (*ResponseEcho, error) { return &ResponseEcho{req.Message}, nil } func (app *GRPCApplication) Flush(ctx context.Context, req *RequestFlush) (*ResponseFlush, error) { return &ResponseFlush{}, nil } func (app *GRPCApplication) Info(ctx context.Context, req *RequestInfo) (*ResponseInfo, error) { return &ResponseInfo{app.app.Info()}, nil } func (app *GRPCApplication) SetOption(ctx context.Context, req *RequestSetOption) (*ResponseSetOption, error) { return &ResponseSetOption{app.app.SetOption(req.Key, req.Value)}, nil } func (app *GRPCApplication) AppendTx(ctx context.Context, req *RequestAppendTx) (*ResponseAppendTx, error) { r := app.app.AppendTx(req.Tx) return &ResponseAppendTx{r.Code, r.Data, r.Log}, nil } func (app *GRPCApplication) CheckTx(ctx context.Context, req *RequestCheckTx) (*ResponseCheckTx, error) { r := app.app.CheckTx(req.Tx) return &ResponseCheckTx{r.Code, r.Data, r.Log}, nil } func (app *GRPCApplication) Query(ctx context.Context, req *RequestQuery) (*ResponseQuery, error) { r := app.app.Query(req.Query) return &ResponseQuery{r.Code, r.Data, r.Log}, nil } func (app *GRPCApplication) Commit(ctx context.Context, req *RequestCommit) (*ResponseCommit, error) { r := app.app.Commit() return &ResponseCommit{r.Code, r.Data, r.Log}, nil } func (app *GRPCApplication) InitChain(ctx context.Context, req *RequestInitChain) (*ResponseInitChain, error) { if chainAware, ok := app.app.(BlockchainAware); ok { chainAware.InitChain(req.Validators) } return &ResponseInitChain{}, nil } func (app *GRPCApplication) BeginBlock(ctx context.Context, req *RequestBeginBlock) (*ResponseBeginBlock, error) { if chainAware, ok := app.app.(BlockchainAware); ok { chainAware.BeginBlock(req.Height) } return &ResponseBeginBlock{}, nil } func (app *GRPCApplication) EndBlock(ctx context.Context, req *RequestEndBlock) (*ResponseEndBlock, error) { if chainAware, ok := app.app.(BlockchainAware); ok { diffs := chainAware.EndBlock(req.Height) return &ResponseEndBlock{diffs}, nil } return &ResponseEndBlock{}, nil }