package oraclecontract import ( "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/interop/contract" "github.com/nspcc-dev/neo-go/pkg/interop/native/oracle" "github.com/nspcc-dev/neo-go/pkg/interop/native/std" "github.com/nspcc-dev/neo-go/pkg/interop/runtime" "github.com/nspcc-dev/neo-go/pkg/interop/storage" "github.com/nspcc-dev/neo-go/pkg/interop/util" ) // RequestURL accepts a complete set of parameters to make an oracle request and // performs it. func RequestURL(url string, filter []byte, callback string, userData interface{}, gasForResponse int) { oracle.Request(url, filter, callback, userData, gasForResponse) } // Handle is a response handler that writes response data to the storage. func Handle(url string, data interface{}, code int, res []byte) { // ABORT if len(data) == 2, some tests use this feature. if data != nil && len(data.(string)) == 2 { util.Abort() } params := []interface{}{url, data, code, res} storage.Put(storage.GetContext(), "lastOracleResponse", std.Serialize(params)) } // HandleRecursive invokes oracle.finish again to test Oracle reentrance. func HandleRecursive(url string, data interface{}, code int, res []byte) { // Regular safety check. callingHash := runtime.GetCallingScriptHash() if !callingHash.Equals(oracle.Hash) { panic("not called from oracle contract") } runtime.Notify("Invocation") if runtime.GetInvocationCounter() == 1 { // We provide no wrapper for finish in interops, it's not usually needed. contract.Call(interop.Hash160(oracle.Hash), "finish", contract.All) } }