neoneo-go/pkg/rpc/response/result/application_log.go
Roman Khimov fc22a46a4c rpc/server: add notification subscription
Note that the protocol differs a bit from #895 in its notifications format,
to avoid additional server-side processing we're omitting some metadata like:
 * block size and confirmations
 * transaction fees, confirmations, block hash and timestamp
 * application execution doesn't have ScriptHash populated

Some block fields may also differ in encoding compared to `getblock` results
(like nonce field).

I think these differences are unnoticieable for most use cases, so we can
leave them as is, but it can be changed in the future.
2020-05-26 11:36:47 +03:00

66 lines
2 KiB
Go

package result
import (
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
)
// ApplicationLog wrapper used for the representation of the
// state.AppExecResult based on the specific tx on the RPC Server.
type ApplicationLog struct {
TxHash util.Uint256 `json:"txid"`
Executions []Execution `json:"executions"`
}
// Execution response wrapper
type Execution struct {
Trigger string `json:"trigger"`
ScriptHash util.Uint160 `json:"contract"`
VMState string `json:"vmstate"`
GasConsumed util.Fixed8 `json:"gas_consumed"`
Stack []smartcontract.Parameter `json:"stack"`
Events []NotificationEvent `json:"notifications"`
}
//NotificationEvent response wrapper
type NotificationEvent struct {
Contract util.Uint160 `json:"contract"`
Item smartcontract.Parameter `json:"state"`
}
// StateEventToResultNotification converts state.NotificationEvent to
// result.NotificationEvent.
func StateEventToResultNotification(event state.NotificationEvent) NotificationEvent {
seen := make(map[vm.StackItem]bool)
item := event.Item.ToContractParameter(seen)
return NotificationEvent{
Contract: event.ScriptHash,
Item: item,
}
}
// NewApplicationLog creates a new ApplicationLog wrapper.
func NewApplicationLog(appExecRes *state.AppExecResult, scriptHash util.Uint160) ApplicationLog {
events := make([]NotificationEvent, 0, len(appExecRes.Events))
for _, e := range appExecRes.Events {
events = append(events, StateEventToResultNotification(e))
}
triggerString := appExecRes.Trigger.String()
executions := []Execution{{
Trigger: triggerString,
ScriptHash: scriptHash,
VMState: appExecRes.VMState,
GasConsumed: appExecRes.GasConsumed,
Stack: appExecRes.Stack,
Events: events,
}}
return ApplicationLog{
TxHash: appExecRes.TxHash,
Executions: executions,
}
}