502 lines
16 KiB
Go
502 lines
16 KiB
Go
// Package p contains an HTTP Cloud Function.
|
|
package p
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"encoding/binary"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"cloud.google.com/go/bigtable"
|
|
)
|
|
|
|
type amountsResult struct {
|
|
Last24Hours map[string]map[string]float64
|
|
WithinPeriod map[string]map[string]float64
|
|
PeriodDurationDays int
|
|
Daily map[string]map[string]map[string]float64
|
|
}
|
|
|
|
// an in-memory cache of previously calculated results
|
|
var warmTransfersToCache = map[string]map[string]map[string]map[string]float64{}
|
|
var muWarmTransfersToCache sync.RWMutex
|
|
var warmTransfersToCacheFilePath = "notional-transferred-to-cache.json"
|
|
|
|
type TransferData struct {
|
|
TokenSymbol string
|
|
TokenName string
|
|
TokenAddress string
|
|
TokenAmount float64
|
|
CoinGeckoCoinId string
|
|
OriginChain string
|
|
LeavingChain string
|
|
DestinationChain string
|
|
Notional float64
|
|
TokenPrice float64
|
|
TokenDecimals int
|
|
TransferTimestamp string
|
|
}
|
|
|
|
// finds all the TokenTransfer rows within the specified period
|
|
func fetchTransferRowsInInterval(tbl *bigtable.Table, ctx context.Context, prefix string, start, end time.Time) []TransferData {
|
|
if len(tokenAllowlist) == 0 {
|
|
log.Fatal("tokenAllowlist is empty")
|
|
}
|
|
rows := []TransferData{}
|
|
err := tbl.ReadRows(ctx, bigtable.PrefixRange(prefix), func(row bigtable.Row) bool {
|
|
|
|
t := &TransferData{}
|
|
if _, ok := row[transferDetailsFam]; ok {
|
|
for _, item := range row[transferDetailsFam] {
|
|
switch item.Column {
|
|
case "TokenTransferDetails:Amount":
|
|
amount, _ := strconv.ParseFloat(string(item.Value), 64)
|
|
t.TokenAmount = amount
|
|
case "TokenTransferDetails:NotionalUSD":
|
|
reader := bytes.NewReader(item.Value)
|
|
var notionalFloat float64
|
|
if err := binary.Read(reader, binary.BigEndian, ¬ionalFloat); err != nil {
|
|
log.Fatalf("failed to read NotionalUSD of row: %v. err %v ", row.Key(), err)
|
|
}
|
|
t.Notional = notionalFloat
|
|
case "TokenTransferDetails:TokenPriceUSD":
|
|
reader := bytes.NewReader(item.Value)
|
|
var tokenPriceFloat float64
|
|
if err := binary.Read(reader, binary.BigEndian, &tokenPriceFloat); err != nil {
|
|
log.Fatalf("failed to read TokenPriceUSD of row: %v. err %v ", row.Key(), err)
|
|
}
|
|
t.TokenPrice = tokenPriceFloat
|
|
case "TokenTransferDetails:OriginSymbol":
|
|
t.TokenSymbol = string(item.Value)
|
|
case "TokenTransferDetails:OriginName":
|
|
t.TokenName = string(item.Value)
|
|
case "TokenTransferDetails:OriginTokenAddress":
|
|
t.TokenAddress = string(item.Value)
|
|
case "TokenTransferDetails:CoinGeckoCoinId":
|
|
t.CoinGeckoCoinId = string(item.Value)
|
|
case "TokenTransferDetails:Decimals":
|
|
t.TokenDecimals, _ = strconv.Atoi(string(item.Value))
|
|
case "TokenTransferDetails:TransferTimestamp":
|
|
t.TransferTimestamp = string(item.Value)
|
|
}
|
|
}
|
|
|
|
if _, ok := row[transferPayloadFam]; ok {
|
|
for _, item := range row[transferPayloadFam] {
|
|
switch item.Column {
|
|
case "TokenTransferPayload:OriginChain":
|
|
t.OriginChain = string(item.Value)
|
|
case "TokenTransferPayload:TargetChain":
|
|
t.DestinationChain = string(item.Value)
|
|
}
|
|
}
|
|
}
|
|
|
|
keyParts := strings.Split(row.Key(), ":")
|
|
t.LeavingChain = keyParts[0]
|
|
|
|
isAllowed, coinGeckoCoinId := isTokenAllowed(t.OriginChain, t.TokenAddress)
|
|
if isAllowed && coinGeckoCoinId != "" {
|
|
transferDateStr := t.TransferTimestamp[0:10]
|
|
if isTokenActive(t.OriginChain, t.TokenAddress, transferDateStr) {
|
|
// use the CoinGeckoCoinId specified in the allowlist
|
|
t.CoinGeckoCoinId = coinGeckoCoinId
|
|
rows = append(rows, *t)
|
|
}
|
|
}
|
|
}
|
|
|
|
return true
|
|
|
|
}, bigtable.RowFilter(
|
|
bigtable.ConditionFilter(
|
|
bigtable.ChainFilters(
|
|
bigtable.FamilyFilter(columnFamilies[1]),
|
|
bigtable.CellsPerRowLimitFilter(1), // only the first cell in column
|
|
bigtable.TimestampRangeFilter(start, end), // within time range
|
|
bigtable.StripValueFilter(), // no columns/values, just the row.Key()
|
|
),
|
|
bigtable.ChainFilters(
|
|
bigtable.FamilyFilter(fmt.Sprintf("%v|%v", transferPayloadFam, transferDetailsFam)),
|
|
bigtable.ColumnFilter("Amount|NotionalUSD|OriginSymbol|OriginName|OriginChain|TargetChain|CoinGeckoCoinId|OriginTokenAddress|TokenPriceUSD|Decimals|TransferTimestamp"),
|
|
bigtable.LatestNFilter(1),
|
|
),
|
|
bigtable.BlockAllFilter(),
|
|
),
|
|
))
|
|
if err != nil {
|
|
log.Fatalln("failed reading rows to create RowList.", err)
|
|
}
|
|
return rows
|
|
}
|
|
|
|
// finds the daily amount of each symbol transferred to each chain, from the specified start to the present.
|
|
func amountsTransferredToInInterval(tbl *bigtable.Table, ctx context.Context, prefix string, start time.Time) map[string]map[string]map[string]float64 {
|
|
if _, ok := warmTransfersToCache["*"]; !ok && loadCache {
|
|
loadJsonToInterface(ctx, warmTransfersToCacheFilePath, &muWarmTransfersToCache, &warmTransfersToCache)
|
|
}
|
|
|
|
results := map[string]map[string]map[string]float64{}
|
|
|
|
now := time.Now().UTC()
|
|
numPrevDays := int(now.Sub(start).Hours() / 24)
|
|
|
|
var intervalsWG sync.WaitGroup
|
|
// there will be a query for each previous day, plus today
|
|
intervalsWG.Add(numPrevDays + 1)
|
|
|
|
// create the unique identifier for this query, for cache
|
|
cachePrefix := createCachePrefix(prefix)
|
|
|
|
cacheNeedsUpdate := false
|
|
|
|
for daysAgo := 0; daysAgo <= numPrevDays; daysAgo++ {
|
|
go func(tbl *bigtable.Table, ctx context.Context, prefix string, daysAgo int) {
|
|
// start is the SOD, end is EOD
|
|
// "0 daysAgo start" is 00:00:00 AM of the current day
|
|
// "0 daysAgo end" is 23:59:59 of the current day (the future)
|
|
|
|
// calulate the start and end times for the query
|
|
hoursAgo := (24 * daysAgo)
|
|
daysAgoDuration := -time.Duration(hoursAgo) * time.Hour
|
|
n := now.Add(daysAgoDuration)
|
|
year := n.Year()
|
|
month := n.Month()
|
|
day := n.Day()
|
|
loc := n.Location()
|
|
|
|
start := time.Date(year, month, day, 0, 0, 0, 0, loc)
|
|
end := time.Date(year, month, day, 23, 59, 59, maxNano, loc)
|
|
|
|
dateStr := start.Format("2006-01-02")
|
|
|
|
muWarmTransfersToCache.Lock()
|
|
// initialize the map for this date in the result set
|
|
results[dateStr] = map[string]map[string]float64{"*": {"*": 0}}
|
|
// check to see if there is cache data for this date/query
|
|
if dates, ok := warmTransfersToCache[cachePrefix]; ok {
|
|
// have a cache for this query
|
|
|
|
if dateCache, ok := dates[dateStr]; ok && len(dateCache) > 1 && useCache(dateStr) {
|
|
// have a cache for this date
|
|
if daysAgo >= 1 {
|
|
// only use the cache for yesterday and older
|
|
results[dateStr] = dateCache
|
|
muWarmTransfersToCache.Unlock()
|
|
intervalsWG.Done()
|
|
return
|
|
}
|
|
}
|
|
} else {
|
|
// no cache for this query, initialize the map
|
|
warmTransfersToCache[cachePrefix] = map[string]map[string]map[string]float64{}
|
|
}
|
|
muWarmTransfersToCache.Unlock()
|
|
|
|
defer intervalsWG.Done()
|
|
|
|
queryResult := fetchTransferRowsInInterval(tbl, ctx, prefix, start, end)
|
|
|
|
// iterate through the rows and increment the count
|
|
for _, row := range queryResult {
|
|
if _, ok := results[dateStr][row.DestinationChain]; !ok {
|
|
results[dateStr][row.DestinationChain] = map[string]float64{"*": 0}
|
|
}
|
|
// add to the total count for the dest chain
|
|
results[dateStr][row.DestinationChain]["*"] = results[dateStr][row.DestinationChain]["*"] + row.Notional
|
|
// add to total for the day
|
|
results[dateStr]["*"]["*"] = results[dateStr]["*"]["*"] + row.Notional
|
|
// add to the symbol's daily total
|
|
results[dateStr]["*"][row.TokenSymbol] = results[dateStr]["*"][row.TokenSymbol] + row.Notional
|
|
// add to the count for chain/symbol
|
|
results[dateStr][row.DestinationChain][row.TokenSymbol] = results[dateStr][row.DestinationChain][row.TokenSymbol] + row.Notional
|
|
}
|
|
if daysAgo >= 1 {
|
|
// set the result in the cache
|
|
muWarmTransfersToCache.Lock()
|
|
if cacheData, ok := warmTransfersToCache[cachePrefix][dateStr]; !ok || len(cacheData) <= 1 || !useCache(dateStr) {
|
|
// cache does not have this date, persist it for other instances.
|
|
warmTransfersToCache[cachePrefix][dateStr] = results[dateStr]
|
|
cacheNeedsUpdate = true
|
|
}
|
|
muWarmTransfersToCache.Unlock()
|
|
}
|
|
}(tbl, ctx, prefix, daysAgo)
|
|
}
|
|
|
|
intervalsWG.Wait()
|
|
|
|
if cacheNeedsUpdate {
|
|
persistInterfaceToJson(ctx, warmTransfersToCacheFilePath, &muWarmTransfersToCache, warmTransfersToCache)
|
|
}
|
|
|
|
// create a set of all the keys from all dates/chains, to ensure the result objects all have the same chain keys
|
|
seenChainSet := map[string]bool{}
|
|
for _, chains := range results {
|
|
for leaving := range chains {
|
|
if _, ok := seenChainSet[leaving]; !ok {
|
|
seenChainSet[leaving] = true
|
|
}
|
|
}
|
|
}
|
|
|
|
var muResult sync.RWMutex
|
|
// ensure each chain object has all the same symbol keys:
|
|
for date, chains := range results {
|
|
// loop through seen chains
|
|
for chain := range seenChainSet {
|
|
// check that date has all the chains
|
|
if _, ok := chains[chain]; !ok {
|
|
muResult.Lock()
|
|
results[date][chain] = map[string]float64{"*": 0}
|
|
muResult.Unlock()
|
|
}
|
|
}
|
|
}
|
|
|
|
return results
|
|
}
|
|
|
|
func transferredToSinceDate(tbl *bigtable.Table, ctx context.Context, prefix string, start time.Time) map[string]map[string]float64 {
|
|
result := map[string]map[string]float64{"*": {"*": 0}}
|
|
|
|
dailyTotals := amountsTransferredToInInterval(tbl, ctx, prefix, start)
|
|
|
|
// loop through the query results to combine cache + fresh data
|
|
for _, chains := range dailyTotals {
|
|
for chain, tokens := range chains {
|
|
// ensure the chain exists in the result map
|
|
if _, ok := result[chain]; !ok {
|
|
result[chain] = map[string]float64{"*": 0}
|
|
}
|
|
for symbol, amount := range tokens {
|
|
if _, ok := result[chain][symbol]; !ok {
|
|
result[chain][symbol] = 0
|
|
}
|
|
// add the amount of this symbol transferred this day to the
|
|
// amount already in the result (amount of this symbol prevoiusly transferred)
|
|
result[chain][symbol] = result[chain][symbol] + amount
|
|
}
|
|
}
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
// returns the count of the rows in the query response
|
|
func transfersToForInterval(tbl *bigtable.Table, ctx context.Context, prefix string, start, end time.Time) map[string]map[string]float64 {
|
|
// query for all rows in time range, return result count
|
|
queryResults := fetchTransferRowsInInterval(tbl, ctx, prefix, start, end)
|
|
|
|
result := map[string]map[string]float64{"*": {"*": 0}}
|
|
|
|
// iterate through the rows and increment the count for each index
|
|
for _, row := range queryResults {
|
|
if _, ok := result[row.DestinationChain]; !ok {
|
|
result[row.DestinationChain] = map[string]float64{"*": 0}
|
|
}
|
|
// add to total amount
|
|
result[row.DestinationChain]["*"] = result[row.DestinationChain]["*"] + row.Notional
|
|
// add to total per symbol
|
|
result["*"][row.TokenSymbol] = result["*"][row.TokenSymbol] + row.Notional
|
|
// add to symbol amount
|
|
result[row.DestinationChain][row.TokenSymbol] = result[row.DestinationChain][row.TokenSymbol] + row.Notional
|
|
// add to all chains/all symbols total
|
|
result["*"]["*"] = result["*"]["*"] + row.Notional
|
|
}
|
|
return result
|
|
}
|
|
|
|
// finds the value that has been transferred to each chain, by symbol.
|
|
func NotionalTransferredTo(w http.ResponseWriter, r *http.Request) {
|
|
// Set CORS headers for the preflight request
|
|
if r.Method == http.MethodOptions {
|
|
w.Header().Set("Access-Control-Allow-Origin", "*")
|
|
w.Header().Set("Access-Control-Allow-Methods", "POST")
|
|
w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
|
|
w.Header().Set("Access-Control-Max-Age", "3600")
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return
|
|
}
|
|
// Set CORS headers for the main request.
|
|
w.Header().Set("Access-Control-Allow-Origin", "*")
|
|
|
|
var numDays, forChain, forAddress, daily, last24Hours, forPeriod string
|
|
|
|
// allow GET requests with querystring params, or POST requests with json body.
|
|
switch r.Method {
|
|
case http.MethodGet:
|
|
queryParams := r.URL.Query()
|
|
numDays = queryParams.Get("numDays")
|
|
forChain = queryParams.Get("forChain")
|
|
forAddress = queryParams.Get("forAddress")
|
|
daily = queryParams.Get("daily")
|
|
last24Hours = queryParams.Get("last24Hours")
|
|
forPeriod = queryParams.Get("forPeriod")
|
|
|
|
case http.MethodPost:
|
|
// declare request body properties
|
|
var d struct {
|
|
NumDays string `json:"numDays"`
|
|
ForChain string `json:"forChain"`
|
|
ForAddress string `json:"forAddress"`
|
|
Daily string `json:"daily"`
|
|
Last24Hours string `json:"last24Hours"`
|
|
ForPeriod string `json:"forPeriod"`
|
|
}
|
|
|
|
// deserialize request body
|
|
if err := json.NewDecoder(r.Body).Decode(&d); err != nil {
|
|
switch err {
|
|
case io.EOF:
|
|
// do nothing, empty body is ok
|
|
default:
|
|
log.Printf("json.NewDecoder: %v", err)
|
|
http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
|
|
return
|
|
}
|
|
}
|
|
|
|
numDays = d.NumDays
|
|
forChain = d.ForChain
|
|
forAddress = d.ForAddress
|
|
daily = d.Daily
|
|
last24Hours = d.Last24Hours
|
|
forPeriod = d.ForPeriod
|
|
|
|
default:
|
|
http.Error(w, "405 - Method Not Allowed", http.StatusMethodNotAllowed)
|
|
log.Println("Method Not Allowed")
|
|
return
|
|
}
|
|
|
|
if daily == "" && last24Hours == "" && forPeriod == "" {
|
|
// none of the options were set, so set one
|
|
last24Hours = "true"
|
|
}
|
|
|
|
var queryDays int
|
|
if numDays == "" {
|
|
queryDays = 30
|
|
} else {
|
|
var convErr error
|
|
queryDays, convErr = strconv.Atoi(numDays)
|
|
if convErr != nil {
|
|
fmt.Fprint(w, "numDays must be an integer")
|
|
http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
|
|
return
|
|
}
|
|
}
|
|
|
|
// create the rowkey prefix for querying
|
|
prefix := ""
|
|
if forChain != "" {
|
|
prefix = forChain
|
|
// if the request is forChain, always groupBy chain
|
|
if forAddress != "" {
|
|
// if the request is forAddress, always groupBy address
|
|
prefix = forChain + ":" + forAddress
|
|
}
|
|
}
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
|
|
defer cancel()
|
|
|
|
var wg sync.WaitGroup
|
|
|
|
// total of last 24 hours
|
|
last24HourCount := map[string]map[string]float64{}
|
|
if last24Hours != "" {
|
|
wg.Add(1)
|
|
go func(prefix string) {
|
|
last24HourInterval := -time.Duration(24) * time.Hour
|
|
now := time.Now().UTC()
|
|
start := now.Add(last24HourInterval)
|
|
defer wg.Done()
|
|
transfers := transfersToForInterval(tbl, ctx, prefix, start, now)
|
|
for chain, tokens := range transfers {
|
|
last24HourCount[chain] = map[string]float64{}
|
|
for symbol, amount := range tokens {
|
|
last24HourCount[chain][symbol] = roundToTwoDecimalPlaces(amount)
|
|
}
|
|
}
|
|
}(prefix)
|
|
}
|
|
|
|
// total of the last numDays
|
|
periodTransfers := map[string]map[string]float64{}
|
|
if forPeriod != "" {
|
|
wg.Add(1)
|
|
go func(prefix string) {
|
|
hours := (24 * queryDays)
|
|
periodInterval := -time.Duration(hours) * time.Hour
|
|
|
|
now := time.Now().UTC()
|
|
prev := now.Add(periodInterval)
|
|
start := time.Date(prev.Year(), prev.Month(), prev.Day(), 0, 0, 0, 0, prev.Location())
|
|
|
|
defer wg.Done()
|
|
// periodCount, err = transferredToSince(tbl, ctx, prefix, start)
|
|
// periodCount, err = transfersToForInterval(tbl, ctx, prefix, start, now)
|
|
transfers := transferredToSinceDate(tbl, ctx, prefix, start)
|
|
for chain, tokens := range transfers {
|
|
periodTransfers[chain] = map[string]float64{}
|
|
for symbol, amount := range tokens {
|
|
periodTransfers[chain][symbol] = roundToTwoDecimalPlaces(amount)
|
|
}
|
|
}
|
|
}(prefix)
|
|
}
|
|
|
|
// daily totals
|
|
dailyTransfers := map[string]map[string]map[string]float64{}
|
|
if daily != "" {
|
|
wg.Add(1)
|
|
go func(prefix string, queryDays int) {
|
|
hours := (24 * queryDays)
|
|
periodInterval := -time.Duration(hours) * time.Hour
|
|
now := time.Now().UTC()
|
|
prev := now.Add(periodInterval)
|
|
start := time.Date(prev.Year(), prev.Month(), prev.Day(), 0, 0, 0, 0, prev.Location())
|
|
defer wg.Done()
|
|
transfers := amountsTransferredToInInterval(tbl, ctx, prefix, start)
|
|
for date, chains := range transfers {
|
|
dailyTransfers[date] = map[string]map[string]float64{}
|
|
for chain, tokens := range chains {
|
|
dailyTransfers[date][chain] = map[string]float64{}
|
|
for symbol, amount := range tokens {
|
|
dailyTransfers[date][chain][symbol] = roundToTwoDecimalPlaces(amount)
|
|
}
|
|
}
|
|
}
|
|
}(prefix, queryDays)
|
|
}
|
|
|
|
wg.Wait()
|
|
|
|
result := &amountsResult{
|
|
Last24Hours: last24HourCount,
|
|
WithinPeriod: periodTransfers,
|
|
PeriodDurationDays: queryDays,
|
|
Daily: dailyTransfers,
|
|
}
|
|
|
|
jsonBytes, err := json.Marshal(result)
|
|
if err != nil {
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
w.Write([]byte(err.Error()))
|
|
log.Println(err.Error())
|
|
return
|
|
}
|
|
w.WriteHeader(http.StatusOK)
|
|
w.Write(jsonBytes)
|
|
}
|