Various minor cleanups.

- Updating and adding some copyrights which were missed recently.
- Slight improvements to some commenting and naming.

background/background.go

@@ -207,7 +207,7 @@ func blockConnected() {
 					continue
 				}
 
-				// Update vote choices on voting wallets.
+				// Set vote choices on voting wallets.
 				for agenda, choice := range ticket.VoteChoices {
 					err = walletClient.SetVoteChoice(agenda, choice, ticket.Hash)
 					if err != nil {

database/database.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 The Decred developers
+// Copyright (c) 2020-2021 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -120,7 +120,6 @@ func CreateNew(dbFile, feeXPub string) error {
 
 	defer db.Close()
 
-	// Create all storage buckets of the VSP if they don't already exist.
 	err = db.Update(func(tx *bolt.Tx) error {
 		// Create parent bucket.
 		vspBkt, err := tx.CreateBucket(vspBktK)

database/ticket.go

@@ -210,14 +210,12 @@ func getTicketFromBkt(bkt *bolt.Bucket) (Ticket, error) {
 		ticket.Confirmed = true
 	}
 
-	voteChoices := make(map[string]string)
-	err := json.Unmarshal(bkt.Get(voteChoicesK), &voteChoices)
+	ticket.VoteChoices = make(map[string]string)
+	err := json.Unmarshal(bkt.Get(voteChoicesK), &ticket.VoteChoices)
 	if err != nil {
 		return ticket, err
 	}
 
-	ticket.VoteChoices = voteChoices
-
 	return ticket, nil
 }
 

database/upgrade_v2.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2021 The Decred developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
 package database
 
 import (

database/upgrade_v3.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2021 The Decred developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
 package database
 
 import (

database/upgrades.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2021 The Decred developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
 package database
 
 import (

database/votechange.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 The Decred developers
+// Copyright (c) 2020-2021 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -39,16 +39,16 @@ func (vdb *VspDatabase) SaveVoteChange(ticketHash string, record VoteChangeRecor
 		// Loop through the bucket to count the records, as well as finding the
 		// most recent and the oldest record.
 		var count int
-		highest := uint32(0)
-		lowest := uint32(math.MaxUint32)
+		newest := uint32(0)
+		oldest := uint32(math.MaxUint32)
 		err = bkt.ForEach(func(k, v []byte) error {
 			count++
 			key := bytesToUint32(k)
-			if key > highest {
-				highest = key
+			if key > newest {
+				newest = key
 			}
-			if key < lowest {
-				lowest = key
+			if key < oldest {
+				oldest = key
 			}
 			return nil
 		})
@@ -59,7 +59,7 @@ func (vdb *VspDatabase) SaveVoteChange(ticketHash string, record VoteChangeRecor
 		// If bucket is at (or over) the limit of max allowed records, remove
 		// the oldest one.
 		if count >= vdb.maxVoteChangeRecords {
-			err = bkt.Delete(uint32ToBytes(lowest))
+			err = bkt.Delete(uint32ToBytes(oldest))
 			if err != nil {
 				return fmt.Errorf("failed to delete old vote change record: %w", err)
 			}
@@ -69,7 +69,7 @@ func (vdb *VspDatabase) SaveVoteChange(ticketHash string, record VoteChangeRecor
 		// otherwise use most recent + 1.
 		var newKey uint32
 		if count > 0 {
-			newKey = highest + 1
+			newKey = newest + 1
 		}
 
 		// Insert record.

webapi/getfeeaddress.go

@@ -19,10 +19,10 @@ import (
 // addrMtx protects getNewFeeAddress.
 var addrMtx sync.Mutex
 
-// getNewFeeAddress gets a new address from the address generator and stores the
-// new address index in the database. In order to maintain consistency between
-// the internal counter of address generator and the database, this function
-// cannot be run concurrently.
+// getNewFeeAddress gets a new address from the address generator, and updates
+// the last used address index in the database. In order to maintain consistency
+// between the internal counter of address generator and the database, this func
+// uses a mutex to ensure it is not run concurrently.
 func getNewFeeAddress(db *database.VspDatabase, addrGen *addressGenerator) (string, uint32, error) {
 	addrMtx.Lock()
 	defer addrMtx.Unlock()

webapi/helpers.go

@@ -26,9 +26,9 @@ func currentVoteVersion(params *chaincfg.Params) uint32 {
 	return latestVersion
 }
 
-// isValidVoteChoices returns an error if provided vote choices are not valid for
-// the most recent agendas.
-func isValidVoteChoices(params *chaincfg.Params, voteVersion uint32, voteChoices map[string]string) error {
+// validConsensusVoteChoices returns an error if provided vote choices are not
+// valid for the most recent consensus agendas.
+func validConsensusVoteChoices(params *chaincfg.Params, voteVersion uint32, voteChoices map[string]string) error {
 
 agendaLoop:
 	for agenda, choice := range voteChoices {

webapi/helpers_test.go

@@ -46,7 +46,7 @@ func TestIsValidVoteChoices(t *testing.T) {
 	}
 
 	for _, test := range tests {
-		err := isValidVoteChoices(params, voteVersion, test.voteChoices)
+		err := validConsensusVoteChoices(params, voteVersion, test.voteChoices)
 		if (err == nil) != test.valid {
 			t.Fatalf("isValidVoteChoices failed for votechoices '%v'.", test.voteChoices)
 		}

webapi/payfee.go

@@ -104,7 +104,7 @@ func payFee(c *gin.Context) {
 	// Validate VoteChoices. Just log a warning if vote choices are not valid
 	// for the current vote version - the ticket should still be registered.
 	validVoteChoices := true
-	err = isValidVoteChoices(cfg.NetParams, currentVoteVersion(cfg.NetParams), request.VoteChoices)
+	err = validConsensusVoteChoices(cfg.NetParams, currentVoteVersion(cfg.NetParams), request.VoteChoices)
 	if err != nil {
 		validVoteChoices = false
 		log.Warnf("%s: Invalid vote choices (clientIP=%s, ticketHash=%s): %v",

webapi/setvotechoices.go

@@ -15,10 +15,6 @@ import (
 	"github.com/gin-gonic/gin/binding"
 )
 
-type timestampRequest struct {
-	Timestamp int64 `json:"timestamp" binding:"required"`
-}
-
 // setVoteChoices is the handler for "POST /api/v3/setvotechoices".
 func setVoteChoices(c *gin.Context) {
 	const funcName = "setVoteChoices"
@@ -76,7 +72,9 @@ func setVoteChoices(c *gin.Context) {
 	}
 
 	for _, change := range previousChanges {
-		var prevReq timestampRequest
+		var prevReq struct {
+			Timestamp int64 `json:"timestamp" binding:"required"`
+		}
 		err := json.Unmarshal([]byte(change.Request), &prevReq)
 		if err != nil {
 			log.Errorf("%s: Could not unmarshal vote change record (ticketHash=%s): %v",
@@ -95,7 +93,7 @@ func setVoteChoices(c *gin.Context) {
 	}
 
 	voteChoices := request.VoteChoices
-	err = isValidVoteChoices(cfg.NetParams, currentVoteVersion(cfg.NetParams), voteChoices)
+	err = validConsensusVoteChoices(cfg.NetParams, currentVoteVersion(cfg.NetParams), voteChoices)
 	if err != nil {
 		log.Warnf("%s: Invalid vote choices (clientIP=%s, ticketHash=%s): %v",
 			funcName, c.ClientIP(), ticket.Hash, err)
@@ -103,8 +101,8 @@ func setVoteChoices(c *gin.Context) {
 		return
 	}
 
-	// Update VoteChoices in the database before updating the wallets. DB is
-	// source of truth and is less likely to error.
+	// Update VoteChoices in the database before updating the wallets. DB is the
+	// source of truth, and also is less likely to error.
 	ticket.VoteChoices = voteChoices
 	err = db.UpdateTicket(ticket)
 	if err != nil {
@@ -117,8 +115,8 @@ func setVoteChoices(c *gin.Context) {
 	// Update vote choices on voting wallets. Tickets are only added to voting
 	// wallets if their fee is confirmed.
 	if ticket.FeeTxStatus == database.FeeConfirmed {
-		for agenda, choice := range voteChoices {
-			for _, walletClient := range walletClients {
+		for _, walletClient := range walletClients {
+			for agenda, choice := range voteChoices {
 				err = walletClient.SetVoteChoice(agenda, choice, ticket.Hash)
 				if err != nil {
 					// If this fails, we still want to try the other wallets, so