qscc

Documentation

Index

• Constants
• type LedgerQuerier
  • func (e *LedgerQuerier) Init(stub shim.ChaincodeStubInterface) pb.Response
  • func (e *LedgerQuerier) Invoke(stub shim.ChaincodeStubInterface) pb.Response

Constants

const (
	GetChainInfo       string = "GetChainInfo"
	GetBlockByNumber   string = "GetBlockByNumber"
	GetBlockByHash     string = "GetBlockByHash"
	GetTransactionByID string = "GetTransactionByID"
	GetBlockByTxID     string = "GetBlockByTxID"
)

These are function names from Invoke first parameter

Types

type LedgerQuerier

type LedgerQuerier struct {
}

LedgerQuerier implements the ledger query functions, including: - GetChainInfo returns BlockchainInfo - GetBlockByNumber returns a block - GetBlockByHash returns a block - GetTransactionByID returns a transaction

func (*LedgerQuerier) Init

func (e *LedgerQuerier) Init(stub shim.ChaincodeStubInterface) pb.Response

Init is called once per chain when the chain is created. This allows the chaincode to initialize any variables on the ledger prior to any transaction execution on the chain.

func (*LedgerQuerier) Invoke

func (e *LedgerQuerier) Invoke(stub shim.ChaincodeStubInterface) pb.Response

Invoke is called with args[0] contains the query function name, args[1] contains the chain ID, which is temporary for now until it is part of stub. Each function requires additional parameters as described below: # GetChainInfo: Return a BlockchainInfo object marshalled in bytes # GetBlockByNumber: Return the block specified by block number in args[2] # GetBlockByHash: Return the block specified by block hash in args[2] # GetTransactionByID: Return the transaction specified by ID in args[2]