package api
import (
"fmt"
"strings"
"time"
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
"github.com/rcrowley/go-metrics"
)
const (
DebugApiVersion = "1.0"
)
var (
// mapping between methods and handlers
DebugMapping = map[string]debughandler{
"debug_dumpBlock": (*debugApi).DumpBlock,
"debug_getBlockRlp": (*debugApi).GetBlockRlp,
"debug_printBlock": (*debugApi).PrintBlock,
"debug_processBlock": (*debugApi).ProcessBlock,
"debug_seedHash": (*debugApi).SeedHash,
"debug_setHead": (*debugApi).SetHead,
"debug_metrics": (*debugApi).Metrics,
}
)
// debug callback handler
type debughandler func(*debugApi, *shared.Request) (interface{}, error)
// admin api provider
type debugApi struct {
xeth *xeth.XEth
ethereum *eth.Ethereum
methods map[string]debughandler
codec codec.ApiCoder
}
// create a new debug api instance
func NewDebugApi(xeth *xeth.XEth, ethereum *eth.Ethereum, coder codec.Codec) *debugApi {
return &debugApi{
xeth: xeth,
ethereum: ethereum,
methods: DebugMapping,
codec: coder.New(nil),
}
}
// collection with supported methods
func (self *debugApi) Methods() []string {
methods := make([]string, len(self.methods))
i := 0
for k := range self.methods {
methods[i] = k
i++
}
return methods
}
// Execute given request
func (self *debugApi) Execute(req *shared.Request) (interface{}, error) {
if callback, ok := self.methods[req.Method]; ok {
return callback(self, req)
}
return nil, &shared.NotImplementedError{req.Method}
}
func (self *debugApi) Name() string {
return shared.DebugApiName
}
func (self *debugApi) ApiVersion() string {
return DebugApiVersion
}
func (self *debugApi) PrintBlock(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
return fmt.Sprintf("%s", block), nil
}
func (self *debugApi) DumpBlock(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
if block == nil {
return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
}
stateDb := state.New(block.Root(), self.ethereum.StateDb())
if stateDb == nil {
return nil, nil
}
return stateDb.RawDump(), nil
}
func (self *debugApi) GetBlockRlp(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
if block == nil {
return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
}
encoded, err := rlp.EncodeToBytes(block)
return fmt.Sprintf("%x", encoded), err
}
func (self *debugApi) SetHead(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
if block == nil {
return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
}
self.ethereum.ChainManager().SetHead(block)
return nil, nil
}
func (self *debugApi) ProcessBlock(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
if block == nil {
return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
}
old := vm.Debug
defer func() { vm.Debug = old }()
vm.Debug = true
_, err := self.ethereum.BlockProcessor().RetryProcess(block)
if err == nil {
return true, nil
}
return false, err
}
func (self *debugApi) SeedHash(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
if hash, err := ethash.GetSeedHash(uint64(args.BlockNumber)); err == nil {
return fmt.Sprintf("0x%x", hash), nil
} else {
return nil, err
}
}
func (self *debugApi) Metrics(req *shared.Request) (interface{}, error) {
// Create a rate formatter
units := []string{"", "K", "M", "G", "T", "E", "P"}
round := func(value float64, prec int) string {
unit := 0
for value >= 1000 {
unit, value, prec = unit+1, value/1000, 2
}
return fmt.Sprintf(fmt.Sprintf("%%.%df%s", prec, units[unit]), value)
}
format := func(total float64, rate float64) string {
return fmt.Sprintf("%s (%s/s)", round(total, 0), round(rate, 2))
}
// Iterate over all the metrics, and just dump for now
counters := make(map[string]interface{})
metrics.DefaultRegistry.Each(func(name string, metric interface{}) {
// Create or retrieve the counter hierarchy for this metric
root, parts := counters, strings.Split(name, "/")
for _, part := range parts[:len(parts)-1] {
if _, ok := root[part]; !ok {
root[part] = make(map[string]interface{})
}
root = root[part].(map[string]interface{})
}
name = parts[len(parts)-1]
// Fill the counter with the metric details
switch metric := metric.(type) {
case metrics.Meter:
root[name] = map[string]interface{}{
"Avg01Min": format(metric.Rate1()*60, metric.Rate1()),
"Avg05Min": format(metric.Rate5()*300, metric.Rate5()),
"Avg15Min": format(metric.Rate15()*900, metric.Rate15()),
"Total": format(float64(metric.Count()), metric.RateMean()),
}
case metrics.Timer:
root[name] = map[string]interface{}{
"Avg01Min": format(metric.Rate1()*60, metric.Rate1()),
"Avg05Min": format(metric.Rate5()*300, metric.Rate5()),
"Avg15Min": format(metric.Rate15()*900, metric.Rate15()),
"Count": format(float64(metric.Count()), metric.RateMean()),
"Maximum": time.Duration(metric.Max()).String(),
"Minimum": time.Duration(metric.Min()).String(),
"Percentile": map[string]interface{}{
"20": time.Duration(metric.Percentile(0.2)).String(),
"50": time.Duration(metric.Percentile(0.5)).String(),
"80": time.Duration(metric.Percentile(0.8)).String(),
"95": time.Duration(metric.Percentile(0.95)).String(),
"99": time.Duration(metric.Percentile(0.99)).String(),
},
}
default:
root[name] = "Unknown metric type"
}
})
return counters, nil
}
