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export.go
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export.go
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package cmd
import (
"context"
"encoding/json"
"fmt"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/whiteblock/cli/whiteblock/cmd/build"
"github.com/whiteblock/cli/whiteblock/util"
"golang.org/x/sync/semaphore"
"io/ioutil"
"net/url"
"os"
"strconv"
"strings"
"sync"
"syscall"
)
func handleFetchChunk(testnetID string, node Node, logName string, chunk string) (string, error) {
ep := fmt.Sprintf("%s/testnets/%s/nodes/%s/logs/%s/chunks/%s", conf.APIURL, testnetID, node.ID, logName, chunk)
log.WithFields(log.Fields{"ep": ep, "chunk": chunk}).Trace("fetching the log chunk")
return util.JwtHTTPRequest("GET", ep, "")
}
func handleChunks(testnetID string, node Node, logName string, rawChunks string, sem *semaphore.Weighted) []string {
var res map[string]interface{}
err := json.Unmarshal([]byte(rawChunks), &res)
if err != nil {
util.PrintErrorFatal(err)
}
chunks := res["items"].([]interface{})
wg := sync.WaitGroup{}
wg.Add(len(chunks))
ctx := context.TODO()
outChunks := make([]string, len(chunks))
for i, chunk := range chunks {
sem.Acquire(ctx, 1)
go func(chunk string, i int) {
defer sem.Release(1)
defer wg.Done()
var err error
var res string
for j := 0; j < 10; j++ {
res, err = handleFetchChunk(testnetID, node, logName, chunk)
if err == nil {
break
}
}
if err != nil {
util.PrintErrorFatal(err)
}
log.WithFields(log.Fields{"chunk": chunk, "num": i}).Debug("fetched a chunk")
err = ioutil.WriteFile(fmt.Sprintf("./%s/%s/%s", node.ID, logName, chunk), []byte(res), 0664)
if err != nil {
util.PrintErrorFatal(err)
}
}(chunk.(string), i)
outChunks[i] = chunk.(string)
}
wg.Wait()
return outChunks
}
func handleExportLogs(testnetID string, node Node, rawRes string, sem *semaphore.Weighted) (interface{}, map[string][]string) {
var res map[string]interface{}
err := json.Unmarshal([]byte(rawRes), &res)
if err != nil {
util.PrintErrorFatal(err)
}
logs := res["items"].([]interface{})
out := map[string][]string{}
for _, logName := range logs {
os.RemoveAll(fmt.Sprintf("./%s/%v", node.ID, logName))
os.MkdirAll(fmt.Sprintf("./%s/%v", node.ID, logName), 0755)
}
wg := sync.WaitGroup{}
wg.Add(len(logs))
mux := sync.Mutex{}
for _, logName := range logs {
go func(logName string) {
defer wg.Done()
ep := fmt.Sprintf("%s/testnets/%s/nodes/%s/logs/%v/chunks", conf.APIURL, testnetID, node.ID, logName)
log.WithFields(log.Fields{"ep": ep}).Debug("fetching the log chunks")
res, err := util.JwtHTTPRequest("GET", ep, "")
if err != nil {
util.PrintErrorFatal(err)
}
mux.Lock()
out[logName] = handleChunks(testnetID, node, logName, res, sem)
mux.Unlock()
}(logName.(string))
}
wg.Wait()
return res["nextPageToken"], out
}
func convertBlockNumber(blockNumber interface{}) int64 {
switch num := blockNumber.(type) {
case float64:
return int64(num)
case string:
num = strings.TrimLeft(num, "0")
res, err := strconv.ParseInt(num, 0, 64)
if err != nil {
util.PrintErrorFatal(err)
}
return res
default:
util.PrintErrorFatal(fmt.Errorf("blocknumber is of unknown type"))
}
panic("shouldn't reach")
}
func handleExportBlocks(testnetID string, node string, rawRes string, coveredBlockNumbers *map[int64]struct{}, sem *semaphore.Weighted) (interface{}, []string) {
var res map[string]interface{}
err := json.Unmarshal([]byte(rawRes), &res)
if err != nil {
util.PrintErrorFatal(err)
}
blockNumbers := res["items"].([]interface{})
out := make([]string, len(blockNumbers))
wg := sync.WaitGroup{}
wg.Add(len(blockNumbers))
mux := sync.Mutex{}
ctx := context.TODO()
for i, blockNumber := range blockNumbers {
num := convertBlockNumber(blockNumber)
if _, ok := (*coveredBlockNumbers)[num]; ok {
wg.Done()
continue
}
(*coveredBlockNumbers)[num] = struct{}{}
sem.Acquire(ctx, 1)
go func(blockNumber interface{}, i int) {
defer wg.Done()
defer sem.Release(1)
ep := fmt.Sprintf("%s/testnets/%s/nodes/%s/blocks/%v", conf.APIURL, testnetID, node, blockNumber)
log.WithFields(log.Fields{"ep": ep}).Debug("fetching the block data")
var res string
var err error
for it := 0; it < 10; it++ {
res, err = util.JwtHTTPRequest("GET", ep, "")
if err == nil {
break
}
}
if err != nil {
util.PrintErrorFatal(err)
}
mux.Lock()
out[i] = res
log.WithFields(log.Fields{"num": i, "blockNumber": blockNumber}).Trace("fetched a block")
mux.Unlock()
}(blockNumber, i)
}
wg.Wait()
return res["nextPageToken"], out
}
func mergeDown(node Node, files map[string][]string) {
for file, chunks := range files {
tmpFileName := fmt.Sprintf("./%s/%s.tmp", node.ID, file)
fd, err := os.Create(tmpFileName)
if err != nil {
util.PrintErrorFatal(err)
}
defer func() {
_, err = fd.Write([]byte("]"))
if err != nil {
util.PrintErrorFatal(err)
}
_ = fd.Close()
}()
for _, chunk := range chunks {
data, err := ioutil.ReadFile(fmt.Sprintf("./%s/%s/%s", node.ID, file, chunk))
if err != nil {
util.PrintErrorFatal(err)
}
_, err = fd.Write(data)
if err != nil {
util.PrintErrorFatal(err)
}
}
err = os.RemoveAll(fmt.Sprintf("./%s/%s", node.ID, file))
if err != nil {
util.PrintErrorFatal(err)
}
err = syscall.Rename(fmt.Sprintf("./%s/%s.tmp", node.ID, file), fmt.Sprintf("./%s/%s", node.ID, file))
if err != nil {
util.PrintErrorFatal(err)
}
}
}
func appendBlocks(items []string, firstCall bool, f *os.File) {
fInfo, err := f.Stat()
if err != nil {
util.PrintErrorFatal(err)
}
if fInfo.Size() == 0 {
_, err = f.Write([]byte("["))
if err != nil {
util.PrintErrorFatal(err)
}
}
first := true
for _, item := range items {
if len(item) == 0 {
continue
}
if first && firstCall && fInfo.Size() < 2 {
first = false
} else {
_, err := f.Write([]byte(","))
if err != nil {
util.PrintErrorFatal(err)
}
}
_, err := f.Write([]byte(item))
if err != nil {
util.PrintErrorFatal(err)
}
}
}
var exportCmd = &cobra.Command{
Hidden: true,
Use: "export [testnet id]",
Short: "Export stuff",
Long: "Export stuff",
Run: func(cmd *cobra.Command, args []string) {
spinner := Spinner{txt: "fetching the block and log data"}
spinner.Run(100)
defer spinner.Kill()
local, err := cmd.Flags().GetBool("local")
if err != nil {
util.PrintErrorFatal(err)
}
outputDir, err := cmd.Flags().GetString("dir")
if err != nil {
util.PrintErrorFatal(err)
}
startBlock, err := cmd.Flags().GetInt("start-block")
if err != nil {
util.PrintErrorFatal(err)
}
singleNodeMode, err := cmd.Flags().GetBool("single-node-mode")
if err != nil {
util.PrintErrorFatal(err)
}
os.MkdirAll(outputDir, 0755)
if local {
fetchDataLocally(outputDir, startBlock, singleNodeMode)
return
}
var testnetID string
if len(args) == 0 {
testnetID = build.GetPreviousBuildID()
if err != nil {
util.PrintErrorFatal(err)
}
} else {
testnetID = args[0]
}
nodes := []Node{}
sem := semaphore.NewWeighted(conf.MaxConns)
ep := fmt.Sprintf("%s/testnets/%s/nodes", conf.APIURL, testnetID)
res, err := util.JwtHTTPRequest("GET", ep, "")
if err != nil {
util.PrintErrorFatal(err)
}
err = json.Unmarshal([]byte(res), &nodes)
if err != nil {
util.PrintErrorFatal(err)
}
for _, node := range nodes {
os.RemoveAll(fmt.Sprintf("%s/%s", outputDir, node.ID))
os.MkdirAll(fmt.Sprintf("%s/%s", outputDir, node.ID), 0755)
}
log.Trace("removed the files")
wg := sync.WaitGroup{}
wg.Add(len(nodes))
for _, node := range nodes {
go func(node Node) {
defer wg.Done()
var nextToken interface{}
var files map[string][]string
for {
var ep string
if nextToken == nil {
ep = fmt.Sprintf("%s/testnets/%s/nodes/%s/logs", conf.APIURL, testnetID, node.ID)
} else {
ep = fmt.Sprintf("%s/testnets/%s/nodes/%s/logs?next=%v", conf.APIURL,
testnetID, node.ID, url.QueryEscape(nextToken.(string)))
}
res, err := util.JwtHTTPRequest("GET", ep, "")
if err != nil {
util.PrintErrorFatal(err)
}
log.WithFields(log.Fields{"ep": ep, "res": res}).Debug("fetching the logs")
nextToken, files = handleExportLogs(testnetID, node, res, sem)
mergeDown(node, files)
if nextToken == nil {
break
}
}
}(node)
}
wg.Add(1)
go func() {
defer wg.Done()
var nextToken interface{}
var blocks []string
files := []*os.File{}
for _, node := range nodes {
f, err := os.Create(fmt.Sprintf("%s/%s/blocks.json", outputDir, node.ID))
if err != nil {
util.PrintErrorFatal(err)
}
files = append(files, f)
}
for i, node := range nodes {
wg.Add(1)
go func(node Node, i int) {
defer wg.Done()
coveredBlockNumbers := map[int64]struct{}{}
first := true
for {
var ep string
if nextToken == nil {
ep = fmt.Sprintf("%s/testnets/%s/nodes/%s/blocks", conf.APIURL, testnetID, node.ID)
} else {
ep = fmt.Sprintf("%s/testnets/%s/nodes/%s/blocks?next=%v", conf.APIURL, testnetID, node.ID,
url.QueryEscape(nextToken.(string)))
}
log.WithFields(log.Fields{"ep": ep}).Debug("fetching the log chunks")
res, err := util.JwtHTTPRequest("GET", ep, "")
if err != nil {
util.PrintErrorFatal(err)
}
log.WithFields(log.Fields{"ep": ep, "res": res}).Debug("fetched the blocks")
nextToken, blocks = handleExportBlocks(testnetID, node.ID, res, &coveredBlockNumbers, sem)
appendBlocks(blocks, first, files[i])
first = false
if nextToken == nil {
break
}
}
_, err = files[i].Write([]byte("]"))
if err != nil {
util.PrintErrorFatal(err)
}
err = files[i].Close()
if err != nil {
util.PrintErrorFatal(err)
}
}(node, i)
}
}()
wg.Wait()
/*for _,node := range nodes {
ep := fmt.Sprintf("https://api.whiteblock.io/testnets/%s/nodes/%s/blocks",testnetID,node.ID)
util.Print(ep)
res,err := util.JwtHTTPRequest("GET",ep,"")
util.Print(res,err)
}*/
//fmt.Printf("https://api.whiteblock.io/testnets/%s/nodes/%s/blocks\n",testnetID,node.ID)
// fmt.Printf("https://api.whiteblock.io/testnets/%s/nodes/%s/logs\n",testnetID,node.ID)
},
}
func GrabManyBlocks(sem *semaphore.Weighted, start int, end int) ([]string, error) {
out := make([]string, end-start)
var outErr error
wg := sync.WaitGroup{}
ctx := context.TODO()
for i := start; i < end; i++ {
wg.Add(1)
sem.Acquire(ctx, 1)
go func(blck *string, i int) {
sem.Release(1)
defer wg.Done()
data, err := util.JsonRpcCall("get_block", []interface{}{i})
if err != nil {
util.PrintErrorFatal(err)
}
block, err := json.Marshal(data)
if err != nil {
util.PrintErrorFatal(err)
}
*blck = string(block)
}(&out[i-start], i)
}
wg.Wait()
log.WithFields(log.Fields{"start": start, "end": end}).Trace("fetched some blocks")
return out, outErr
}
func fetchBlockDataLocally(sem *semaphore.Weighted, node Node, blockHeight int, startBlock int, dir string) {
os.RemoveAll(fmt.Sprintf("%s/%s", dir, node.ID))
err := os.MkdirAll(fmt.Sprintf("%s/%s", dir, node.ID), 0755)
if err != nil {
util.PrintErrorFatal(err)
}
fd, err := os.Create(fmt.Sprintf("%s/%s/blocks.json", dir, node.ID))
if err != nil {
util.PrintErrorFatal(err)
}
defer fd.Close()
diff := 100
for i := startBlock; i <= blockHeight; i += diff {
endPoint := i + diff
if endPoint > blockHeight {
endPoint = blockHeight
}
blocks, err := GrabManyBlocks(sem, i, endPoint)
if err != nil {
log.Error(err)
i -= diff
continue
}
appendBlocks(blocks, i == startBlock, fd)
err = fd.Sync()
if err != nil {
util.PrintErrorFatal(err)
}
}
_, err = fd.Write([]byte("]"))
if err != nil {
util.PrintErrorFatal(err)
}
err = fd.Sync()
if err != nil {
util.PrintErrorFatal(err)
}
}
//only supports the main log and the block data
func fetchDataLocally(dir string, startBlock int, singleNodeMode bool) {
sem := semaphore.NewWeighted(conf.MaxConns)
nodes := GetNodes()
if len(nodes) < 1 {
return
}
if singleNodeMode {
nodes = nodes[:1]
}
blockHeights := make([]int, len(nodes))
for i := range nodes {
err := util.JsonRpcCallP("get_block_number", []interface{}{i}, &blockHeights[i])
if err != nil {
util.PrintErrorFatal(err)
}
log.WithFields(log.Fields{"node": i, "block number": blockHeights[i]}).Trace("got the block height for the node")
}
wg := sync.WaitGroup{}
testnetID := build.GetPreviousBuildID()
for i, blockHeight := range blockHeights {
wg.Add(1)
go func(blockHeight int, i int) {
defer wg.Done()
fetchBlockDataLocally(sem, nodes[i], blockHeight, startBlock, dir)
}(blockHeight, i)
wg.Add(1)
go func(i int) {
defer wg.Done()
res, err := util.JsonRpcCall("log", map[string]interface{}{
"testnetId": testnetID,
"node": i,
"lines": -1,
})
if err != nil {
util.PrintErrorFatal(err)
}
toWrite, err := json.Marshal(res)
if err != nil {
util.PrintErrorFatal(err)
}
err = ioutil.WriteFile(fmt.Sprintf("%s/%s/output.log", dir, nodes[i].ID), toWrite, 0664)
if err != nil {
util.PrintErrorFatal(err)
}
}(i)
}
wg.Wait()
}
func init() {
exportCmd.Flags().Bool("local", false, "get data from the local nodes instead of the API")
exportCmd.Flags().String("dir", ".", "specify a custom output directory")
exportCmd.Flags().Int("start-block", 1, "the export start block for local only")
exportCmd.Flags().Bool("single-node-mode", false, "the export start time for local only")
RootCmd.AddCommand(exportCmd)
}