78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package protocols
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/log"
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)
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//TestReporter tests that the metrics being collected for p2p accounting
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//are being persisted and available after restart of a node.
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//It simulates restarting by just recreating the DB as if the node had restarted.
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func TestReporter(t *testing.T) {
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//create a test directory
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dir, err := ioutil.TempDir("", "reporter-test")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(dir)
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//setup the metrics
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log.Debug("Setting up metrics first time")
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reportInterval := 5 * time.Millisecond
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metrics := SetupAccountingMetrics(reportInterval, filepath.Join(dir, "test.db"))
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log.Debug("Done.")
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//do some metrics
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mBalanceCredit.Inc(12)
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mBytesCredit.Inc(34)
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mMsgDebit.Inc(9)
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//give the reporter time to write the metrics to DB
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time.Sleep(20 * time.Millisecond)
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//set the metrics to nil - this effectively simulates the node having shut down...
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mBalanceCredit = nil
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mBytesCredit = nil
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mMsgDebit = nil
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//close the DB also, or we can't create a new one
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metrics.Close()
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//setup the metrics again
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log.Debug("Setting up metrics second time")
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metrics = SetupAccountingMetrics(reportInterval, filepath.Join(dir, "test.db"))
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defer metrics.Close()
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log.Debug("Done.")
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//now check the metrics, they should have the same value as before "shutdown"
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if mBalanceCredit.Count() != 12 {
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t.Fatalf("Expected counter to be %d, but is %d", 12, mBalanceCredit.Count())
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}
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if mBytesCredit.Count() != 34 {
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t.Fatalf("Expected counter to be %d, but is %d", 23, mBytesCredit.Count())
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}
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if mMsgDebit.Count() != 9 {
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t.Fatalf("Expected counter to be %d, but is %d", 9, mMsgDebit.Count())
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}
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}
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