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diskq_test.go
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package diskq
import (
"fmt"
"os"
"strings"
"testing"
"time"
)
func Test_Diskq_create(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
partitionOffsets := make(map[uint32]map[uint64]struct{})
for partitionIndex := 0; partitionIndex < int(cfg.PartitionCount); partitionIndex++ {
partitionOffsets[uint32(partitionIndex)] = make(map[uint64]struct{})
}
for x := 0; x < 100; x++ {
m := Message{
PartitionKey: UUIDv4().String(),
Data: []byte(fmt.Sprintf("data-%06d", x)),
}
partition, offset, err := dq.Push(m)
assert_noerror(t, err)
_, ok := partitionOffsets[partition][offset]
assert_equal(t, false, ok)
partitionOffsets[partition][offset] = struct{}{}
}
dirEntries, err := os.ReadDir(tempPath)
assert_noerror(t, err)
assert_equal(t, 3, len(dirEntries), "now includes setttings!")
dirEntries, err = os.ReadDir(FormatPathForPartitions(tempPath))
assert_noerror(t, err)
assert_equal(t, 3, len(dirEntries))
}
func Test_Diskq_sentinelFailure(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
}
_, err := New(tempPath, cfg)
assert_noerror(t, err)
_, err = New(tempPath, cfg)
assert_error(t, err)
}
func Test_Diskq_create_thenOpen(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
}
func() {
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
defer func() { _ = dq.Close() }()
partitionOffsets := make(map[uint32]map[uint64]struct{})
for partitionIndex := 0; partitionIndex < int(cfg.PartitionCount); partitionIndex++ {
partitionOffsets[uint32(partitionIndex)] = make(map[uint64]struct{})
}
var partitionKeys = []string{"aaa", "bbb", "ccc"}
for x := 0; x < 100; x++ {
m := Message{
PartitionKey: partitionKeys[x%len(partitionKeys)],
Data: []byte(fmt.Sprintf("data-%06d", x)),
}
partition, offset, err := dq.Push(m)
assert_noerror(t, err)
_, ok := partitionOffsets[partition][offset]
assert_equal(t, false, ok)
partitionOffsets[partition][offset] = struct{}{}
}
dirEntries, err := os.ReadDir(tempPath)
assert_noerror(t, err)
assert_equal(t, 3, len(dirEntries))
dirEntries, err = os.ReadDir(FormatPathForPartitions(tempPath))
assert_noerror(t, err)
assert_equal(t, 3, len(dirEntries))
}()
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
defer func() { _ = dq.Close() }()
assert_equal(t, 3, len(dq.partitions))
assert_equal(t, 31, dq.partitions[0].activeSegment.startOffset)
assert_equal(t, 34, dq.partitions[0].activeSegment.endOffset)
assert_equal(t, 31, dq.partitions[1].activeSegment.startOffset)
assert_equal(t, 33, dq.partitions[1].activeSegment.endOffset)
assert_equal(t, 31, dq.partitions[2].activeSegment.startOffset)
assert_equal(t, 33, dq.partitions[2].activeSegment.endOffset)
}
func Test_Diskq_Sync(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
partitionOffsets := make(map[uint32]map[uint64]struct{})
for partitionIndex := 0; partitionIndex < int(cfg.PartitionCount); partitionIndex++ {
partitionOffsets[uint32(partitionIndex)] = make(map[uint64]struct{})
}
for x := 0; x < 100; x++ {
m := Message{
PartitionKey: UUIDv4().String(),
Data: []byte(fmt.Sprintf("data-%06d", x)),
}
partition, offset, err := dq.Push(m)
assert_noerror(t, err)
_, ok := partitionOffsets[partition][offset]
assert_equal(t, false, ok)
partitionOffsets[partition][offset] = struct{}{}
}
err = dq.Sync()
assert_noerror(t, err)
}
func Test_Diskq_createsNewSegments(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
for x := 0; x < 11; x++ {
// each message ends up being about 62b
m := Message{
PartitionKey: "one",
Data: []byte(strings.Repeat("a", 32)),
}
_, _, err := dq.Push(m)
assert_noerror(t, err)
}
dirEntries, err := os.ReadDir(tempPath)
assert_noerror(t, err)
assert_equal(t, 3, len(dirEntries))
dirEntries, err = os.ReadDir(FormatPathForPartitions(tempPath))
assert_noerror(t, err)
assert_equal(t, 3, len(dirEntries))
partitionIndex := dq.partitionForMessage(Message{PartitionKey: "one"}).index
partitionDirEntries, err := os.ReadDir(FormatPathForPartition(tempPath, partitionIndex))
assert_noerror(t, err)
assert_equal(t, 3, len(partitionDirEntries))
for x := 0; x < 12; x++ {
m := Message{
PartitionKey: "one",
Data: []byte(strings.Repeat("a", 32)),
}
_, _, err := dq.Push(m)
assert_noerror(t, err)
}
partitionDirEntries, err = os.ReadDir(FormatPathForPartition(tempPath, partitionIndex))
assert_noerror(t, err)
assert_equal(t, 6, len(partitionDirEntries), "we expect the partition to have some segments")
}
func Test_Diskq_Vacuum_byAge(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
RetentionMaxAge: 32 * time.Hour,
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
var partitionKeys = []string{"aaa", "bbb", "ccc"}
var index int
hour := 64
for x := 0; x < 64*3; x++ {
m := Message{
PartitionKey: partitionKeys[index],
Data: []byte(strings.Repeat("a", 32)),
TimestampUTC: time.Now().UTC().Add(-time.Duration(hour) * time.Hour),
}
_, _, err := dq.Push(m)
assert_noerror(t, err)
index = (index + 1) % len(partitionKeys)
if index == 0 {
hour--
}
}
offsets, err := GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 4, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 4, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 4, len(offsets))
err = dq.Vacuum()
assert_noerror(t, err)
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 2, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 2, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 2, len(offsets))
}
func Test_Diskq_Vacuum_bySize(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
messageSize := messageSizeBytes(testMessageStable3(10, 256))
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 10 * messageSize,
RetentionMaxBytes: 20 * messageSize,
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
t.Cleanup(func() { _ = dq.Close() })
for x := 0; x < 160; x++ {
_, _, err := dq.Push(testMessageStable3(x, 256))
assert_noerror(t, err)
}
offsets, err := GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 6, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 6, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 6, len(offsets))
err = dq.Vacuum()
assert_noerror(t, err)
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 3, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 3, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 3, len(offsets))
}
func Test_Diskq_Vacuum_bySize_extant(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
RetentionMaxBytes: 4096, // 4kb
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
t.Cleanup(func() { _ = dq.Close() })
var partitionKeys = []string{"aaa", "bbb", "ccc"}
var index int
for x := 0; x < 64*3; x++ {
m := Message{
PartitionKey: partitionKeys[index],
Data: []byte(strings.Repeat("a", 256)),
}
_, _, err := dq.Push(m)
assert_noerror(t, err)
index = (index + 1) % len(partitionKeys)
}
offsets, err := GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 17, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 17, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 17, len(offsets))
err = dq.Close()
assert_noerror(t, err)
dq, err = New(tempPath, Options{
PartitionCount: 1, // intentional!
SegmentSizeBytes: 1024, // 1kb
RetentionMaxBytes: 4096, // 4kb
})
assert_noerror(t, err)
t.Cleanup(func() { _ = dq.Close() })
err = dq.Vacuum()
assert_noerror(t, err)
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 4, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 4, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 4, len(offsets))
}
func Test_Diskq_Vacuum_withConsumerActive(t *testing.T) {
tempPath, done := tempDir()
t.Cleanup(done)
cfg := Options{
PartitionCount: 3,
SegmentSizeBytes: 1024, // 1kb
RetentionMaxAge: 32 * time.Hour,
}
dq, err := New(tempPath, cfg)
assert_noerror(t, err)
var partitionKeys = []string{"aaa", "bbb", "ccc"}
var index int
hour := 64
for x := 0; x < 64*3; x++ {
m := Message{
PartitionKey: partitionKeys[index],
Data: []byte(strings.Repeat("a", 32)),
TimestampUTC: time.Now().UTC().Add(-time.Duration(hour) * time.Hour),
}
_, _, err := dq.Push(m)
assert_noerror(t, err)
index = (index + 1) % len(partitionKeys)
if index == 0 {
hour--
}
}
cc, err := OpenConsumer(tempPath, 0, ConsumerOptions{
StartBehavior: ConsumerStartBehaviorOldest,
})
assert_noerror(t, err)
defer func() { _ = cc.Close() }()
err = dq.Vacuum()
assert_noerror(t, err)
offsets, err := GetPartitionSegmentStartOffsets(tempPath, 0)
assert_noerror(t, err)
assert_equal(t, 2, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 1)
assert_noerror(t, err)
assert_equal(t, 2, len(offsets))
offsets, err = GetPartitionSegmentStartOffsets(tempPath, 2)
assert_noerror(t, err)
assert_equal(t, 2, len(offsets))
}