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// Copyright (C) 2019-2021 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"sync"
"sync/atomic"
"testing"
"time"
"github.com/algorand/go-algorand/daemon/algod/api/spec/v1"
"github.com/stretchr/testify/require"
)
func bw(client Client) *blockWatcher {
return &blockWatcher{
abort: make(chan struct{}),
delay: 0,
client: client,
}
}
// Given we are at block 300.
// When the status continues to report block 300
// Then blockIfStalled will block until the next block is reported
func TestBlockIfStalled(t *testing.T) {
client := mockClient{
error: []error{nil, nil, nil},
status: makeNodeStatuses(300, 300, 300, 301),
block: makeBlocks(),
routine: []string{"", "", ""},
}
ret, ok := bw(&client).blockIfStalled()
require.True(t, ok)
if ret != 301 {
t.Errorf("Unexpected result, wanted 301 found: %d", ret)
}
require.Equal(t, 4, client.StatusCalls)
}
// Given we are at block 300.
// When the status continues to increase quickly
// Then blockIfCatchup will block until a block is reported twice
func TestBlockIfCatchup(t *testing.T) {
client := mockClient{
error: []error{nil, nil, nil},
status: makeNodeStatuses(301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 310),
block: makeBlocks(),
routine: []string{"", "", ""},
}
ret, ok := bw(&client).blockIfCatchup(300)
require.True(t, ok)
if ret != 310 {
t.Errorf("Unexpected result, wanted 310 found: %d", ret)
}
require.Equal(t, 11, client.StatusCalls)
}
// Given we are at block 300.
// When the status is not changing quickly
// Then blockIfCatchup will return after the first status call.
func TestBlockIfCaughtUp(t *testing.T) {
client := mockClient{
error: []error{nil, nil, nil},
status: makeNodeStatuses(300),
block: makeBlocks(),
routine: []string{"", "", ""},
}
ret, ok := bw(&client).blockIfCatchup(300)
require.True(t, ok)
if ret != 300 {
t.Errorf("Unexpected result, wanted 300 found: %d", ret)
}
require.Equal(t, 1, client.StatusCalls)
}
type testlistener struct {
initCount uint32
blockCount uint32
}
func (l *testlistener) init(block uint64) {
atomic.AddUint32(&(l.initCount), 1)
}
func (l *testlistener) onBlock(block v1.Block) {
atomic.AddUint32(&(l.blockCount), 1)
}
func TestE2E(t *testing.T) {
client := makeMockClient(
[]error{nil, nil, nil},
makeNodeStatuses(300, 301, 302, 302, 302, 302, 302, 302, 310, 320, 321, 321, 321, 322),
makeBlocks(302, 321, 322),
[]string{"", "", ""})
listener := testlistener{
initCount: 0,
blockCount: 0,
}
done := make(chan struct{})
var wg sync.WaitGroup
wg.Add(1)
listeners := []blockListener{&listener}
// Start block watcher in background.
go runBlockWatcher(listeners, &client, done, &wg, time.Second, 2*time.Second)
// Wait until the first block has been requested after the init/catchup phase.
start := time.Now()
for time.Since(start) < 20*time.Second && atomic.LoadUint32(&listener.initCount) == uint32(0) {
time.Sleep(time.Second)
}
require.Equal(t, uint32(1), atomic.LoadUint32(&listener.initCount), "Init should have been called once.")
// Simulate stall at block 301 followed by catchup.
waitForStall := time.Now()
for time.Since(waitForStall) < 10*time.Second && atomic.LoadUint32(&listener.blockCount) < uint32(3) {
time.Sleep(time.Second)
}
// Shutdown blockwatcher.
done <- struct{}{}
wg.Wait()
// Stalled while attempting to fetch block 303
require.Equal(t, 1, client.BlockCalls[302])
require.True(t, client.BlockCalls[303] > 1)
// After catching up successfully fetched 321 / 322
require.Equal(t, 1, client.BlockCalls[321])
require.Equal(t, 1, client.BlockCalls[322])
}
func TestAbortDuringStall(t *testing.T) {
client := makeMockClient(
[]error{},
makeNodeStatuses(300),
makeBlocks(),
[]string{})
listener := testlistener{
initCount: 0,
blockCount: 0,
}
done := make(chan struct{})
var wg sync.WaitGroup
wg.Add(1)
listeners := []blockListener{&listener}
// Start block watcher in background.
go runBlockWatcher(listeners, &client, done, &wg, time.Second, 2*time.Second)
time.Sleep(500 * time.Millisecond)
done <- struct{}{}
wg.Wait()
}
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