Add vendor dir (#16) (#4)

* Add vendor dir so builds dont require dep

* Pin specific version go-eth version

vendor/github.com/btcsuite/btcd/database/cmd/dbtool/loadheaders.go

@@ -0,0 +1,93 @@
+// Copyright (c) 2015-2016 The btcsuite developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"time"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/database"
+)
+
+// headersCmd defines the configuration options for the loadheaders command.
+type headersCmd struct {
+	Bulk bool `long:"bulk" description:"Use bulk loading of headers instead of one at a time"`
+}
+
+var (
+	// headersCfg defines the configuration options for the command.
+	headersCfg = headersCmd{
+		Bulk: false,
+	}
+)
+
+// Execute is the main entry point for the command.  It's invoked by the parser.
+func (cmd *headersCmd) Execute(args []string) error {
+	// Setup the global config options and ensure they are valid.
+	if err := setupGlobalConfig(); err != nil {
+		return err
+	}
+
+	// Load the block database.
+	db, err := loadBlockDB()
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	// NOTE: This code will only work for ffldb.  Ideally the package using
+	// the database would keep a metadata index of its own.
+	blockIdxName := []byte("ffldb-blockidx")
+	if !headersCfg.Bulk {
+		err = db.View(func(tx database.Tx) error {
+			totalHdrs := 0
+			blockIdxBucket := tx.Metadata().Bucket(blockIdxName)
+			blockIdxBucket.ForEach(func(k, v []byte) error {
+				totalHdrs++
+				return nil
+			})
+			log.Infof("Loading headers for %d blocks...", totalHdrs)
+			numLoaded := 0
+			startTime := time.Now()
+			blockIdxBucket.ForEach(func(k, v []byte) error {
+				var hash chainhash.Hash
+				copy(hash[:], k)
+				_, err := tx.FetchBlockHeader(&hash)
+				if err != nil {
+					return err
+				}
+				numLoaded++
+				return nil
+			})
+			log.Infof("Loaded %d headers in %v", numLoaded,
+				time.Since(startTime))
+			return nil
+		})
+		return err
+	}
+
+	// Bulk load headers.
+	err = db.View(func(tx database.Tx) error {
+		blockIdxBucket := tx.Metadata().Bucket(blockIdxName)
+		hashes := make([]chainhash.Hash, 0, 500000)
+		blockIdxBucket.ForEach(func(k, v []byte) error {
+			var hash chainhash.Hash
+			copy(hash[:], k)
+			hashes = append(hashes, hash)
+			return nil
+		})
+
+		log.Infof("Loading headers for %d blocks...", len(hashes))
+		startTime := time.Now()
+		hdrs, err := tx.FetchBlockHeaders(hashes)
+		if err != nil {
+			return err
+		}
+		log.Infof("Loaded %d headers in %v", len(hdrs),
+			time.Since(startTime))
+		return nil
+	})
+	return err
+}