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Add parser for blockconnected notification (#238)

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This commit is contained in:
Jamie Holdstock 2021-04-25 14:22:13 +01:00 committed by GitHub
parent 2581f84b59
commit 79cdeaaf8b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 26 additions and 3 deletions
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3
background/background.go
View File

@ -12,7 +12,6 @@ import (
"sync"
"time"
"decred.org/dcrwallet/rpc/client/dcrd"
"github.com/decred/dcrd/chaincfg/v3"
"github.com/decred/vspd/database"
"github.com/decred/vspd/rpc"
@ -46,7 +45,7 @@ func (n *NotificationHandler) Notify(method string, params json.RawMessage) erro
return nil
}
header, _, err := dcrd.BlockConnected(params)
header, err := rpc.ParseBlockConnectedNotification(params)
if err != nil {
log.Errorf("Failed to parse dcrd block notification: %v", err)
return nil

1
go.sum
View File

@ -171,7 +171,6 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208 h1:qwRHBd0NqMbJxfbotnDhm2ByMI1Shq4Y6oRJo21SGJA=
golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

25
rpc/dcrd.go
View File

@ -5,8 +5,10 @@
package rpc
import (
"bytes"
"context"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"strings"
@ -221,3 +223,26 @@ func (c *DcrdRPC) CanTicketVote(rawTx *dcrdtypes.TxRawResult, ticketHash string,
return live, nil
}
// ParseBlockConnectedNotification extracts the block header from a
// blockconnected JSON-RPC notification.
func ParseBlockConnectedNotification(params json.RawMessage) (*wire.BlockHeader, error) {
var notif []string
err := json.Unmarshal(params, &notif)
if err != nil {
return nil, fmt.Errorf("json unmarshal error: %w", err)
}
if len(notif) == 0 {
return nil, errors.New("notification is empty")
}
rawHeader := notif[0]
var header wire.BlockHeader
err = header.Deserialize(hex.NewDecoder(bytes.NewReader([]byte(rawHeader))))
if err != nil {
return nil, fmt.Errorf("error creating block header from bytes: %w", err)
}
return &header, nil
}