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rpc: implement getblockheader RPC

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closes #711
This commit is contained in:
Anna Shaleva 2020-03-04 20:35:37 +03:00
parent 8141d49e5a
commit 42e2aff381
5 changed files with 174 additions and 1 deletions
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2
docs/rpc.md
View file

@ -42,7 +42,7 @@ which would yield the response:
| `getblock` | Yes |
| `getblockcount` | Yes |
| `getblockhash` | Yes |
| `getblockheader` | No (#711) |
| `getblockheader` | Yes |
| `getblocksysfee` | Yes |
| `getclaimable` | Yes |
| `getconnectioncount` | Yes |

53
pkg/rpc/response/result/block_header.go Normal file
View file

@ -0,0 +1,53 @@
package result
import (
"strconv"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/util"
)
type (
// Header wrapper used for the representation of
// block header on the RPC Server.
Header struct {
Hash util.Uint256 `json:"hash"`
Size int `json:"size"`
Version uint32 `json:"version"`
PrevBlockHash util.Uint256 `json:"previousblockhash"`
MerkleRoot util.Uint256 `json:"merkleroot"`
Timestamp uint32 `json:"time"`
Index uint32 `json:"index"`
Nonce string `json:"nonce"`
NextConsensus util.Uint160 `json:"nextconsensus"`
Script transaction.Witness `json:"script"`
Confirmations uint32 `json:"confirmations"`
NextBlockHash *util.Uint256 `json:"nextblockhash,omitempty"`
}
)
// NewHeader creates a new Header wrapper.
func NewHeader(h *block.Header, chain core.Blockchainer) Header {
res := Header{
Hash: h.Hash(),
Size: io.GetVarSize(h),
Version: h.Version,
PrevBlockHash: h.PrevHash,
MerkleRoot: h.MerkleRoot,
Timestamp: h.Timestamp,
Index: h.Index,
Nonce: strconv.FormatUint(h.ConsensusData, 16),
NextConsensus: h.NextConsensus,
Script: h.Script,
Confirmations: chain.BlockHeight() - h.Index + 1,
}
hash := chain.GetHeaderHash(int(h.Index) + 1)
if !hash.Equals(util.Uint256{}) {
res.NextBlockHash = &hash
}
return res
}

9
pkg/rpc/server/prometheus.go
View file

@ -43,6 +43,14 @@ var (
},
)
getblockheaderCalled = prometheus.NewCounter(
prometheus.CounterOpts{
Help: "Number of calls to getblockheader rpc endpoint",
Name: "getblockheader_called",
Namespace: "neogo",
},
)
getblocksysfeeCalled = prometheus.NewCounter(
prometheus.CounterOpts{
Help: "Number of calls to getblocksysfee rpc endpoint",
@ -171,6 +179,7 @@ func init() {
getbestblockCalled,
getblockcountCalled,
getblockHashCalled,
getblockheaderCalled,
getblocksysfeeCalled,
getconnectioncountCalled,
getcontractstateCalled,

43
pkg/rpc/server/server.go
View file

@ -186,6 +186,10 @@ Methods:
results = s.chain.GetHeaderHash(num)
case "getblockheader":
getblockheaderCalled.Inc()
results, resultsErr = s.getBlockHeader(reqParams)
case "getblocksysfee":
getblocksysfeeCalled.Inc()
results, resultsErr = s.getBlockSysFee(reqParams)
@ -557,6 +561,45 @@ func (s *Server) getBlockSysFee(reqParams request.Params) (util.Fixed8, error) {
return blockSysFee, nil
}
// getBlockHeader returns the corresponding block header information according to the specified script hash.
func (s *Server) getBlockHeader(reqParams request.Params) (interface{}, error) {
var verbose bool
param, ok := reqParams.ValueWithType(0, request.StringT)
if !ok {
return nil, response.ErrInvalidParams
}
hash, err := param.GetUint256()
if err != nil {
return nil, response.ErrInvalidParams
}
param, ok = reqParams.ValueWithType(1, request.NumberT)
if ok {
v, err := param.GetInt()
if err != nil {
return nil, response.ErrInvalidParams
}
verbose = v != 0
}
h, err := s.chain.GetHeader(hash)
if err != nil {
return nil, response.NewRPCError("unknown block", "", nil)
}
if verbose {
return result.NewHeader(h, s.chain), nil
}
buf := io.NewBufBinWriter()
h.EncodeBinary(buf.BinWriter)
if buf.Err != nil {
return nil, err
}
return hex.EncodeToString(buf.Bytes()), nil
}
// invoke implements the `invoke` RPC call.
func (s *Server) invoke(reqParams request.Params) (interface{}, error) {
scriptHashHex, ok := reqParams.ValueWithType(0, request.StringT)

68
pkg/rpc/server/server_test.go
View file

@ -9,12 +9,14 @@ import (
"net/http"
"net/http/httptest"
"reflect"
"strconv"
"strings"
"testing"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/internal/random"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/rpc/response"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
"github.com/nspcc-dev/neo-go/pkg/util"
@ -334,6 +336,72 @@ var rpcTestCases = map[string][]rpcTestCase{
fail: true,
},
},
"getblockheader": {
{
name: "positive, no verbose",
params: `["a6e526375a780335112299f2262501e5e9574c3ba61b16bbc1e282b344f6c14d"]`,
result: func(e *executor) interface{} {
expected := "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"
return &expected
},
},
{
name: "positive, verbose 0",
params: `["a6e526375a780335112299f2262501e5e9574c3ba61b16bbc1e282b344f6c14d", 0]`,
result: func(e *executor) interface{} {
expected := "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"
return &expected
},
},
{
name: "positive, verbose !=0",
params: `["a6e526375a780335112299f2262501e5e9574c3ba61b16bbc1e282b344f6c14d", 2]`,
result: func(e *executor) interface{} {
hash, _ := util.Uint256DecodeStringLE("a6e526375a780335112299f2262501e5e9574c3ba61b16bbc1e282b344f6c14d")
block, _ := e.chain.GetBlock(hash)
header := block.Header()
expected := result.Header{
Hash: header.Hash(),
Size: io.GetVarSize(header),
Version: header.Version,
PrevBlockHash: header.PrevHash,
MerkleRoot: header.MerkleRoot,
Timestamp: header.Timestamp,
Index: header.Index,
Nonce: strconv.FormatUint(header.ConsensusData, 16),
NextConsensus: header.NextConsensus,
Script: header.Script,
Confirmations: e.chain.BlockHeight() - header.Index + 1,
}
nextHash := e.chain.GetHeaderHash(int(header.Index) + 1)
if !hash.Equals(util.Uint256{}) {
expected.NextBlockHash = &nextHash
}
return &expected
},
},
{
name: "invalid verbose type",
params: `["a6e526375a780335112299f2262501e5e9574c3ba61b16bbc1e282b344f6c14d", true]`,
fail: true,
},
{
name: "invalid block hash",
params: `["notahash"]`,
fail: true,
},
{
name: "unknown block",
params: `["a6e526375a780335112299f2262501e5e9574c3ba61b16bbc1e282b344f6c141"]`,
fail: true,
},
{
name: "no params",
params: `[]`,
fail: true,
},
},
"getblocksysfee": {
{
name: "positive",