fix test errors, add comments

metrics/registry.go

@@ -314,7 +314,7 @@ func (r *PrefixedRegistry) UnregisterAll() {
 var (
 	DefaultRegistry    = NewRegistry()
 	EphemeralRegistry  = NewRegistry()
-	AccountingRegistry = NewRegistry()
+	AccountingRegistry = NewRegistry() // registry used in swarm
 )
 
 // Call the given function for each registered metric.

p2p/protocols/accounting.go

@@ -27,21 +27,21 @@ var (
 	// All metrics are cumulative
 
 	// total amount of units credited
-	mBalanceCredit metrics.Counter
+	mBalanceCredit = metrics.NewRegisteredCounterForced("account.balance.credit", metrics.AccountingRegistry)
 	// total amount of units debited
-	mBalanceDebit metrics.Counter
+	mBalanceDebit = metrics.NewRegisteredCounterForced("account.balance.debit", metrics.AccountingRegistry)
 	// total amount of bytes credited
-	mBytesCredit metrics.Counter
+	mBytesCredit = metrics.NewRegisteredCounterForced("account.bytes.credit", metrics.AccountingRegistry)
 	// total amount of bytes debited
-	mBytesDebit metrics.Counter
+	mBytesDebit = metrics.NewRegisteredCounterForced("account.bytes.debit", metrics.AccountingRegistry)
 	// total amount of credited messages
-	mMsgCredit metrics.Counter
+	mMsgCredit = metrics.NewRegisteredCounterForced("account.msg.credit", metrics.AccountingRegistry)
 	// total amount of debited messages
-	mMsgDebit metrics.Counter
+	mMsgDebit = metrics.NewRegisteredCounterForced("account.msg.debit", metrics.AccountingRegistry)
 	// how many times local node had to drop remote peers
-	mPeerDrops metrics.Counter
+	mPeerDrops = metrics.NewRegisteredCounterForced("account.peerdrops", metrics.AccountingRegistry)
 	// how many times local node overdrafted and dropped
-	mSelfDrops metrics.Counter
+	mSelfDrops = metrics.NewRegisteredCounterForced("account.selfdrops", metrics.AccountingRegistry)
 )
 
 // Prices defines how prices are being passed on to the accounting instance
@@ -108,21 +108,11 @@ func NewAccounting(balance Balance, po Prices) *Accounting {
 	return ah
 }
 
-// SetupAccountingMetrics creates a separate registry for p2p accounting metrics;
+// SetupAccountingMetrics uses a separate registry for p2p accounting metrics;
 // this registry should be independent of any other metrics as it persists at different endpoints.
-// It also instantiates the given metrics and starts the persisting go-routine which
+// It also starts the persisting go-routine which
 // at the passed interval writes the metrics to a LevelDB
 func SetupAccountingMetrics(reportInterval time.Duration, path string) *AccountingMetrics {
-	// instantiate the metrics
-	mBalanceCredit = metrics.NewRegisteredCounterForced("account.balance.credit", metrics.AccountingRegistry)
-	mBalanceDebit = metrics.NewRegisteredCounterForced("account.balance.debit", metrics.AccountingRegistry)
-	mBytesCredit = metrics.NewRegisteredCounterForced("account.bytes.credit", metrics.AccountingRegistry)
-	mBytesDebit = metrics.NewRegisteredCounterForced("account.bytes.debit", metrics.AccountingRegistry)
-	mMsgCredit = metrics.NewRegisteredCounterForced("account.msg.credit", metrics.AccountingRegistry)
-	mMsgDebit = metrics.NewRegisteredCounterForced("account.msg.debit", metrics.AccountingRegistry)
-	mPeerDrops = metrics.NewRegisteredCounterForced("account.peerdrops", metrics.AccountingRegistry)
-	mSelfDrops = metrics.NewRegisteredCounterForced("account.selfdrops", metrics.AccountingRegistry)
-
 	// create the DB and start persisting
 	return NewAccountingMetrics(metrics.AccountingRegistry, reportInterval, path)
 }

p2p/protocols/reporter_test.go

@@ -43,21 +43,27 @@ func TestReporter(t *testing.T) {
 	metrics := SetupAccountingMetrics(reportInterval, filepath.Join(dir, "test.db"))
 	log.Debug("Done.")
 
-	//do some metrics
+	//change metrics
 	mBalanceCredit.Inc(12)
 	mBytesCredit.Inc(34)
 	mMsgDebit.Inc(9)
 
+	//store expected metrics
+	expectedBalanceCredit := mBalanceCredit.Count()
+	expectedBytesCredit := mBytesCredit.Count()
+	expectedMsgDebit := mMsgDebit.Count()
+
 	//give the reporter time to write the metrics to DB
 	time.Sleep(20 * time.Millisecond)
 
-	//set the metrics to nil - this effectively simulates the node having shut down...
-	mBalanceCredit = nil
-	mBytesCredit = nil
-	mMsgDebit = nil
 	//close the DB also, or we can't create a new one
 	metrics.Close()
 
+	//clear the metrics - this effectively simulates the node having shut down...
+	mBalanceCredit.Clear()
+	mBytesCredit.Clear()
+	mMsgDebit.Clear()
+
 	//setup the metrics again
 	log.Debug("Setting up metrics second time")
 	metrics = SetupAccountingMetrics(reportInterval, filepath.Join(dir, "test.db"))
@@ -65,13 +71,13 @@ func TestReporter(t *testing.T) {
 	log.Debug("Done.")
 
 	//now check the metrics, they should have the same value as before "shutdown"
-	if mBalanceCredit.Count() != 12 {
+	if mBalanceCredit.Count() != expectedBalanceCredit {
-		t.Fatalf("Expected counter to be %d, but is %d", 12, mBalanceCredit.Count())
+		t.Fatalf("Expected counter to be %d, but is %d", expectedBalanceCredit, mBalanceCredit.Count())
 	}
-	if mBytesCredit.Count() != 34 {
+	if mBytesCredit.Count() != expectedBytesCredit {
-		t.Fatalf("Expected counter to be %d, but is %d", 23, mBytesCredit.Count())
+		t.Fatalf("Expected counter to be %d, but is %d", expectedBytesCredit, mBytesCredit.Count())
 	}
-	if mMsgDebit.Count() != 9 {
+	if mMsgDebit.Count() != expectedMsgDebit {
-		t.Fatalf("Expected counter to be %d, but is %d", 9, mMsgDebit.Count())
+		t.Fatalf("Expected counter to be %d, but is %d", expectedMsgDebit, mMsgDebit.Count())
 	}
 }

swarm/metrics/flags.go

@@ -102,7 +102,7 @@ func Setup(ctx *cli.Context) {
 		}
 
 		if enableAccountingExport {
-			log.Info("Enabling accounting metrics export to InfluxDB")
+			log.Info("Exporting accounting metrics to InfluxDB")
 			go influxdb.InfluxDBWithTags(gethmetrics.AccountingRegistry, 10*time.Second, endpoint, database, username, password, "accounting.", map[string]string{
 				"host": hosttag,
 			})