Add initial commit for fiat rates functionality

bchain/coins/btc/bitcoinrpc.go

@@ -55,8 +55,8 @@ type Configuration struct {
 	XPubMagicSegwitP2sh          uint32 `json:"xpub_magic_segwit_p2sh,omitempty"`
 	XPubMagicSegwitNative        uint32 `json:"xpub_magic_segwit_native,omitempty"`
 	Slip44                       uint32 `json:"slip44,omitempty"`
-	AlternativeEstimateFee       string `json:"alternativeEstimateFee,omitempty"`
-	AlternativeEstimateFeeParams string `json:"alternativeEstimateFeeParams,omitempty"`
+	AlternativeEstimateFee       string `json:"alternative_estimate_fee,omitempty"`
+	AlternativeEstimateFeeParams string `json:"alternative_estimate_fee_params,omitempty"`
 	MinimumCoinbaseConfirmations int    `json:"minimumCoinbaseConfirmations,omitempty"`
 }
 

blockbook.go

@@ -8,7 +8,9 @@ import (
 	"blockbook/db"
 	"blockbook/server"
 	"context"
+	"encoding/json"
 	"flag"
+	"io/ioutil"
 	"log"
 	"math/rand"
 	"net/http"
@@ -317,6 +319,8 @@ func mainWithExitCode() int {
 	}
 
 	if internalServer != nil || publicServer != nil || chain != nil {
+		// start fiat rates downloader only if not shutting down immediately
+		initFiatRatesDownloader(*blockchain)
 		waitForSignalAndShutdown(internalServer, publicServer, chain, 10*time.Second)
 	}
 
@@ -650,3 +654,23 @@ func computeFeeStats(stopCompute chan os.Signal, blockFrom, blockTo int, db *db.
 	glog.Info("computeFeeStats finished in ", time.Since(start))
 	return err
 }
+
+func initFiatRatesDownloader(configfile string) {
+	data, err := ioutil.ReadFile(configfile)
+	if err != nil {
+		glog.Errorf("Error reading file %v, %v", configfile, err)
+		return
+	}
+	var config struct {
+		FiatRates       string `json:"fiat_rates"`
+		FiatRatesParams string `json:"fiat_rates_params"`
+	}
+	err = json.Unmarshal(data, &config)
+	if err != nil {
+		glog.Errorf("Error parsing file %v, %v", configfile, err)
+	}
+	if config.FiatRates == "coingecko" {
+		// coingecko:=fiat.NewCoingeckoDownloader(config.FiatRatesParams)
+		// go coingecko.Run()
+	}
+}

configs/coins/bitcoin.json

@@ -59,8 +59,10 @@
       "xpub_magic_segwit_p2sh": 77429938,
       "xpub_magic_segwit_native": 78792518,
       "additional_params": {
-        "alternativeEstimateFee": "whatthefee-disabled",
-        "alternativeEstimateFeeParams": "{\"url\": \"https://whatthefee.io/data.json\", \"periodSeconds\": 60}"
+        "alternative_estimate_fee": "whatthefee-disabled",
+        "alternative_estimate_fee_params": "{\"url\": \"https://whatthefee.io/data.json\", \"periodSeconds\": 60}",
+        "fiat_rates": "coingecko",
+        "fiat_rates_params": "{\"coin\": \"bitcoin\", \"periodSeconds\": 60}"
       }
     }
   },

db/rocksdb.go

@@ -77,6 +77,7 @@ const (
 	cfAddresses
 	cfBlockTxs
 	cfTransactions
+	cfFiatRates
 	// BitcoinType
 	cfAddressBalance
 	cfTxAddresses
@@ -86,7 +87,7 @@ const (
 
 // common columns
 var cfNames []string
-var cfBaseNames = []string{"default", "height", "addresses", "blockTxs", "transactions"}
+var cfBaseNames = []string{"default", "height", "addresses", "blockTxs", "transactions", "fiatRates"}
 
 // type specific columns
 var cfNamesBitcoinType = []string{"addressBalance", "txAddresses"}
@@ -99,7 +100,7 @@ func openDB(path string, c *gorocksdb.Cache, openFiles int) (*gorocksdb.DB, []*g
 	// from documentation: if most of your queries are executed using iterators, you shouldn't set bloom filter
 	optsAddresses := createAndSetDBOptions(0, c, openFiles)
 	// default, height, addresses, blockTxids, transactions
-	cfOptions := []*gorocksdb.Options{opts, opts, optsAddresses, opts, opts}
+	cfOptions := []*gorocksdb.Options{opts, opts, optsAddresses, opts, opts, opts}
 	// append type specific options
 	count := len(cfNames) - len(cfOptions)
 	for i := 0; i < count; i++ {