From 30502d963d3ecb61f05cc033f457b6b4af0b0a84 Mon Sep 17 00:00:00 2001
From: Miya Chen <miyatlchen@gmail.com>
Date: Tue, 3 Oct 2017 16:53:18 +0800
Subject: [PATCH] metrics, tests/load: estimating the remaining number of
 blocks

---
 metrics/blockchain.go   |  2 +-
 metrics/exporter.go     | 35 +++++++++++++++++++++++++++++++++++
 tests/load/load_test.go |  9 ++++++++-
 3 files changed, 44 insertions(+), 2 deletions(-)
 create mode 100644 metrics/exporter.go

diff --git a/metrics/blockchain.go b/metrics/blockchain.go
index ad464d9b..e1d574a7 100644
--- a/metrics/blockchain.go
+++ b/metrics/blockchain.go
@@ -142,7 +142,7 @@ func (mc *metricChain) Stop(strong bool) error {
 		sub.Unsubscribe()
 	}
 	mc.wg.Wait()
-	mc.metricsMgr.Export()
+	mc.Export()
 	return mc.Blockchain.Stop(strong)
 }
 
diff --git a/metrics/exporter.go b/metrics/exporter.go
new file mode 100644
index 00000000..fb08a363
--- /dev/null
+++ b/metrics/exporter.go
@@ -0,0 +1,35 @@
+// Copyright 2017 AMIS Technologies
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package metrics
+
+type Exporter interface {
+	Export()
+	SentTxCount() int64
+	ExcutedTxCount() int64
+}
+
+func (mc *metricChain) Export() {
+	mc.metricsMgr.Export()
+}
+
+func (mc *metricChain) SentTxCount() int64 {
+	return mc.metricsMgr.SentTxCounter.Snapshot().Count()
+}
+
+func (mc *metricChain) ExcutedTxCount() int64 {
+	return mc.metricsMgr.ExcutedTxCounter.Snapshot().Count()
+}
diff --git a/tests/load/load_test.go b/tests/load/load_test.go
index c039dc5e..f91f64e1 100644
--- a/tests/load/load_test.go
+++ b/tests/load/load_test.go
@@ -26,6 +26,7 @@ import (
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
+	istcommon "github.com/getamis/istanbul-tools/common"
 	"github.com/getamis/istanbul-tools/container"
 	"github.com/getamis/istanbul-tools/k8s"
 	"github.com/getamis/istanbul-tools/metrics"
@@ -88,8 +89,14 @@ func runTests(numberOfValidators int, gaslimit int, txpoolSize int) {
 
 		AfterEach(func() {
 			Expect(blockchain).NotTo(BeNil())
+			var blocksCnt int = 5
+			metricsExport, ok := blockchain.(metrics.Exporter)
+			if ok {
+				blockSize := gaslimit / int(istcommon.DefaultGasLimit)
+				blocksCnt = int(metricsExport.SentTxCount()-metricsExport.ExcutedTxCount())/blockSize + 1
+			}
 			tests.WaitFor(blockchain.Validators(), func(geth container.Ethereum, wg *sync.WaitGroup) {
-				Expect(geth.WaitForBlocks(10)).To(BeNil())
+				Expect(geth.WaitForBlocks(blocksCnt)).To(BeNil())
 				wg.Done()
 			})
 			Expect(blockchain.Stop(true)).To(BeNil())