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Merge pull request #706 from prometheus/beorn7/persistence2

Browse source 
Improve iterator performance.
This commit is contained in:
Björn Rabenstein 2015-05-21 13:48:52 +02:00
parent a19e6b39d0 3b9c421a69
commit c44e7cd105
15 changed files with 731 additions and 489 deletions
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8
promql/analyzer.go
View file

@ -73,7 +73,7 @@ func (a *Analyzer) Analyze(ctx context.Context) error {
switch n := node.(type) {
case *VectorSelector:
pt := getPreloadTimes(n.Offset)
fpts := a.Storage.GetFingerprintsForLabelMatchers(n.LabelMatchers)
fpts := a.Storage.FingerprintsForLabelMatchers(n.LabelMatchers)
n.fingerprints = fpts
n.metrics = map[clientmodel.Fingerprint]clientmodel.COWMetric{}
n.iterators = map[clientmodel.Fingerprint]local.SeriesIterator{}
@ -84,11 +84,11 @@ func (a *Analyzer) Analyze(ctx context.Context) error {
if _, alreadyInRanges := pt.ranges[fp]; !alreadyInRanges {
pt.instants[fp] = struct{}{}
}
n.metrics[fp] = a.Storage.GetMetricForFingerprint(fp)
n.metrics[fp] = a.Storage.MetricForFingerprint(fp)
}
case *MatrixSelector:
pt := getPreloadTimes(n.Offset)
fpts := a.Storage.GetFingerprintsForLabelMatchers(n.LabelMatchers)
fpts := a.Storage.FingerprintsForLabelMatchers(n.LabelMatchers)
n.fingerprints = fpts
n.metrics = map[clientmodel.Fingerprint]clientmodel.COWMetric{}
n.iterators = map[clientmodel.Fingerprint]local.SeriesIterator{}
@ -100,7 +100,7 @@ func (a *Analyzer) Analyze(ctx context.Context) error {
// an instant for the same fingerprint, should we have one.
delete(pt.instants, fp)
}
n.metrics[fp] = a.Storage.GetMetricForFingerprint(fp)
n.metrics[fp] = a.Storage.MetricForFingerprint(fp)
}
}
return true

6
promql/engine.go
View file

@ -644,7 +644,7 @@ func (ev *evaluator) eval(expr Expr) Value {
func (ev *evaluator) vectorSelector(node *VectorSelector) Vector {
vec := Vector{}
for fp, it := range node.iterators {
sampleCandidates := it.GetValueAtTime(ev.Timestamp.Add(-node.Offset))
sampleCandidates := it.ValueAtTime(ev.Timestamp.Add(-node.Offset))
samplePair := chooseClosestSample(sampleCandidates, ev.Timestamp.Add(-node.Offset))
if samplePair != nil {
vec = append(vec, &Sample{
@ -666,7 +666,7 @@ func (ev *evaluator) matrixSelector(node *MatrixSelector) Matrix {
sampleStreams := make([]*SampleStream, 0, len(node.iterators))
for fp, it := range node.iterators {
samplePairs := it.GetRangeValues(interval)
samplePairs := it.RangeValues(interval)
if len(samplePairs) == 0 {
continue
}
@ -695,7 +695,7 @@ func (ev *evaluator) matrixSelectorBounds(node *MatrixSelector) Matrix {
sampleStreams := make([]*SampleStream, 0, len(node.iterators))
for fp, it := range node.iterators {
samplePairs := it.GetBoundaryValues(interval)
samplePairs := it.BoundaryValues(interval)
if len(samplePairs) == 0 {
continue
}

97
storage/local/chunk.go
View file

@ -41,8 +41,8 @@ const (
// goroutine-safe proxies for chunk methods.
type chunkDesc struct {
sync.Mutex
chunk chunk // nil if chunk is evicted.
refCount int
c chunk // nil if chunk is evicted.
rCnt int
chunkFirstTime clientmodel.Timestamp // Used if chunk is evicted.
chunkLastTime clientmodel.Timestamp // Used if chunk is evicted.
@ -59,14 +59,14 @@ func newChunkDesc(c chunk) *chunkDesc {
chunkOps.WithLabelValues(createAndPin).Inc()
atomic.AddInt64(&numMemChunks, 1)
numMemChunkDescs.Inc()
return &chunkDesc{chunk: c, refCount: 1}
return &chunkDesc{c: c, rCnt: 1}
}
func (cd *chunkDesc) add(s *metric.SamplePair) []chunk {
cd.Lock()
defer cd.Unlock()
return cd.chunk.add(s)
return cd.c.add(s)
}
// pin increments the refCount by one. Upon increment from 0 to 1, this
@ -76,11 +76,11 @@ func (cd *chunkDesc) pin(evictRequests chan<- evictRequest) {
cd.Lock()
defer cd.Unlock()
if cd.refCount == 0 {
if cd.rCnt == 0 {
// Remove ourselves from the evict list.
evictRequests <- evictRequest{cd, false}
}
cd.refCount++
cd.rCnt++
}
// unpin decrements the refCount by one. Upon decrement from 1 to 0, this
@ -90,69 +90,69 @@ func (cd *chunkDesc) unpin(evictRequests chan<- evictRequest) {
cd.Lock()
defer cd.Unlock()
if cd.refCount == 0 {
if cd.rCnt == 0 {
panic("cannot unpin already unpinned chunk")
}
cd.refCount--
if cd.refCount == 0 {
cd.rCnt--
if cd.rCnt == 0 {
// Add ourselves to the back of the evict list.
evictRequests <- evictRequest{cd, true}
}
}
func (cd *chunkDesc) getRefCount() int {
func (cd *chunkDesc) refCount() int {
cd.Lock()
defer cd.Unlock()
return cd.refCount
return cd.rCnt
}
func (cd *chunkDesc) firstTime() clientmodel.Timestamp {
cd.Lock()
defer cd.Unlock()
if cd.chunk == nil {
if cd.c == nil {
return cd.chunkFirstTime
}
return cd.chunk.firstTime()
return cd.c.firstTime()
}
func (cd *chunkDesc) lastTime() clientmodel.Timestamp {
cd.Lock()
defer cd.Unlock()
if cd.chunk == nil {
if cd.c == nil {
return cd.chunkLastTime
}
return cd.chunk.lastTime()
return cd.c.newIterator().lastTimestamp()
}
func (cd *chunkDesc) isEvicted() bool {
cd.Lock()
defer cd.Unlock()
return cd.chunk == nil
return cd.c == nil
}
func (cd *chunkDesc) contains(t clientmodel.Timestamp) bool {
return !t.Before(cd.firstTime()) && !t.After(cd.lastTime())
}
func (cd *chunkDesc) getChunk() chunk {
func (cd *chunkDesc) chunk() chunk {
cd.Lock()
defer cd.Unlock()
return cd.chunk
return cd.c
}
func (cd *chunkDesc) setChunk(c chunk) {
cd.Lock()
defer cd.Unlock()
if cd.chunk != nil {
if cd.c != nil {
panic("chunk already set")
}
cd.chunk = c
cd.c = c
}
// maybeEvict evicts the chunk if the refCount is 0. It returns whether the chunk
@ -162,15 +162,15 @@ func (cd *chunkDesc) maybeEvict() bool {
cd.Lock()
defer cd.Unlock()
if cd.chunk == nil {
if cd.c == nil {
return true
}
if cd.refCount != 0 {
if cd.rCnt != 0 {
return false
}
cd.chunkFirstTime = cd.chunk.firstTime()
cd.chunkLastTime = cd.chunk.lastTime()
cd.chunk = nil
cd.chunkFirstTime = cd.c.firstTime()
cd.chunkLastTime = cd.c.newIterator().lastTimestamp()
cd.c = nil
chunkOps.WithLabelValues(evict).Inc()
atomic.AddInt64(&numMemChunks, -1)
return true
@ -188,12 +188,38 @@ type chunk interface {
add(sample *metric.SamplePair) []chunk
clone() chunk
firstTime() clientmodel.Timestamp
lastTime() clientmodel.Timestamp
newIterator() chunkIterator
marshal(io.Writer) error
unmarshal(io.Reader) error
unmarshalFromBuf([]byte)
encoding() chunkEncoding
}
// A chunkIterator enables efficient access to the content of a chunk. It is
// generally not safe to use a chunkIterator concurrently with or after chunk
// mutation.
type chunkIterator interface {
// length returns the number of samples in the chunk.
length() int
// Gets the timestamp of the n-th sample in the chunk.
timestampAtIndex(int) clientmodel.Timestamp
// Gets the last timestamp in the chunk.
lastTimestamp() clientmodel.Timestamp
// Gets the sample value of the n-th sample in the chunk.
sampleValueAtIndex(int) clientmodel.SampleValue
// Gets the last sample value in the chunk.
lastSampleValue() clientmodel.SampleValue
// Gets the two values that are immediately adjacent to a given time. In
// case a value exist at precisely the given time, only that single
// value is returned. Only the first or last value is returned (as a
// single value), if the given time is before or after the first or last
// value, respectively.
valueAtTime(clientmodel.Timestamp) metric.Values
// Gets all values contained within a given interval.
rangeValues(metric.Interval) metric.Values
// Whether a given timestamp is contained between first and last value
// in the chunk.
contains(clientmodel.Timestamp) bool
// values returns a channel, from which all sample values in the chunk
// can be received in order. The channel is closed after the last
// one. It is generally not safe to mutate the chunk while the channel
@ -201,29 +227,12 @@ type chunk interface {
values() <-chan *metric.SamplePair
}
// A chunkIterator enables efficient access to the content of a chunk. It is
// generally not safe to use a chunkIterator concurrently with or after chunk
// mutation.
type chunkIterator interface {
// Gets the two values that are immediately adjacent to a given time. In
// case a value exist at precisely the given time, only that single
// value is returned. Only the first or last value is returned (as a
// single value), if the given time is before or after the first or last
// value, respectively.
getValueAtTime(clientmodel.Timestamp) metric.Values
// Gets all values contained within a given interval.
getRangeValues(metric.Interval) metric.Values
// Whether a given timestamp is contained between first and last value
// in the chunk.
contains(clientmodel.Timestamp) bool
}
func transcodeAndAdd(dst chunk, src chunk, s *metric.SamplePair) []chunk {
chunkOps.WithLabelValues(transcode).Inc()
head := dst
body := []chunk{}
for v := range src.values() {
for v := range src.newIterator().values() {
newChunks := head.add(v)
body = append(body, newChunks[:len(newChunks)-1]...)
head = newChunks[len(newChunks)-1]

2
storage/local/crashrecovery.go
View file

@ -318,7 +318,7 @@ func (p *persistence) sanitizeSeries(
return fp, true
}
// This series is supposed to be archived.
metric, err := p.getArchivedMetric(fp)
metric, err := p.archivedMetric(fp)
if err != nil {
log.Errorf(
"Fingerprint %v assumed archived but couldn't be looked up in archived index: %s",

227
storage/local/delta.go
View file

@ -188,18 +188,19 @@ func (c deltaEncodedChunk) clone() chunk {
// firstTime implements chunk.
func (c deltaEncodedChunk) firstTime() clientmodel.Timestamp {
return c.valueAtIndex(0).Timestamp
}
// lastTime implements chunk.
func (c deltaEncodedChunk) lastTime() clientmodel.Timestamp {
return c.valueAtIndex(c.len() - 1).Timestamp
return c.baseTime()
}
// newIterator implements chunk.
func (c *deltaEncodedChunk) newIterator() chunkIterator {
return &deltaEncodedChunkIterator{
chunk: c,
c: *c,
len: c.len(),
baseT: c.baseTime(),
baseV: c.baseValue(),
tBytes: c.timeBytes(),
vBytes: c.valueBytes(),
isInt: c.isInt(),
}
}
@ -237,19 +238,6 @@ func (c *deltaEncodedChunk) unmarshalFromBuf(buf []byte) {
*c = (*c)[:binary.LittleEndian.Uint16((*c)[deltaHeaderBufLenOffset:])]
}
// values implements chunk.
func (c deltaEncodedChunk) values() <-chan *metric.SamplePair {
n := c.len()
valuesChan := make(chan *metric.SamplePair)
go func() {
for i := 0; i < n; i++ {
valuesChan <- c.valueAtIndex(i)
}
close(valuesChan)
}()
return valuesChan
}
// encoding implements chunk.
func (c deltaEncodedChunk) encoding() chunkEncoding { return delta }
@ -284,106 +272,157 @@ func (c deltaEncodedChunk) len() int {
return (len(c) - deltaHeaderBytes) / c.sampleSize()
}
func (c deltaEncodedChunk) valueAtIndex(idx int) *metric.SamplePair {
offset := deltaHeaderBytes + idx*c.sampleSize()
var ts clientmodel.Timestamp
switch c.timeBytes() {
case d1:
ts = c.baseTime() + clientmodel.Timestamp(uint8(c[offset]))
case d2:
ts = c.baseTime() + clientmodel.Timestamp(binary.LittleEndian.Uint16(c[offset:]))
case d4:
ts = c.baseTime() + clientmodel.Timestamp(binary.LittleEndian.Uint32(c[offset:]))
case d8:
// Take absolute value for d8.
ts = clientmodel.Timestamp(binary.LittleEndian.Uint64(c[offset:]))
default:
panic("Invalid number of bytes for time delta")
}
offset += int(c.timeBytes())
var v clientmodel.SampleValue
if c.isInt() {
switch c.valueBytes() {
case d0:
v = c.baseValue()
case d1:
v = c.baseValue() + clientmodel.SampleValue(int8(c[offset]))
case d2:
v = c.baseValue() + clientmodel.SampleValue(int16(binary.LittleEndian.Uint16(c[offset:])))
case d4:
v = c.baseValue() + clientmodel.SampleValue(int32(binary.LittleEndian.Uint32(c[offset:])))
// No d8 for ints.
default:
panic("Invalid number of bytes for integer delta")
}
} else {
switch c.valueBytes() {
case d4:
v = c.baseValue() + clientmodel.SampleValue(math.Float32frombits(binary.LittleEndian.Uint32(c[offset:])))
case d8:
// Take absolute value for d8.
v = clientmodel.SampleValue(math.Float64frombits(binary.LittleEndian.Uint64(c[offset:])))
default:
panic("Invalid number of bytes for floating point delta")
}
}
return &metric.SamplePair{
Timestamp: ts,
Value: v,
}
}
// deltaEncodedChunkIterator implements chunkIterator.
type deltaEncodedChunkIterator struct {
chunk *deltaEncodedChunk
// TODO: add more fields here to keep track of last position.
c deltaEncodedChunk
len int
baseT clientmodel.Timestamp
baseV clientmodel.SampleValue
tBytes, vBytes deltaBytes
isInt bool
}
// getValueAtTime implements chunkIterator.
func (it *deltaEncodedChunkIterator) getValueAtTime(t clientmodel.Timestamp) metric.Values {
i := sort.Search(it.chunk.len(), func(i int) bool {
return !it.chunk.valueAtIndex(i).Timestamp.Before(t)
// length implements chunkIterator.
func (it *deltaEncodedChunkIterator) length() int { return it.len }
// valueAtTime implements chunkIterator.
func (it *deltaEncodedChunkIterator) valueAtTime(t clientmodel.Timestamp) metric.Values {
i := sort.Search(it.len, func(i int) bool {
return !it.timestampAtIndex(i).Before(t)
})
switch i {
case 0:
return metric.Values{*it.chunk.valueAtIndex(0)}
case it.chunk.len():
return metric.Values{*it.chunk.valueAtIndex(it.chunk.len() - 1)}
return metric.Values{metric.SamplePair{
Timestamp: it.timestampAtIndex(0),
Value: it.sampleValueAtIndex(0),
}}
case it.len:
return metric.Values{metric.SamplePair{
Timestamp: it.timestampAtIndex(it.len - 1),
Value: it.sampleValueAtIndex(it.len - 1),
}}
default:
v := it.chunk.valueAtIndex(i)
if v.Timestamp.Equal(t) {
return metric.Values{*v}
ts := it.timestampAtIndex(i)
if ts.Equal(t) {
return metric.Values{metric.SamplePair{
Timestamp: ts,
Value: it.sampleValueAtIndex(i),
}}
}
return metric.Values{
metric.SamplePair{
Timestamp: it.timestampAtIndex(i - 1),
Value: it.sampleValueAtIndex(i - 1),
},
metric.SamplePair{
Timestamp: ts,
Value: it.sampleValueAtIndex(i),
},
}
return metric.Values{*it.chunk.valueAtIndex(i - 1), *v}
}
}
// getRangeValues implements chunkIterator.
func (it *deltaEncodedChunkIterator) getRangeValues(in metric.Interval) metric.Values {
oldest := sort.Search(it.chunk.len(), func(i int) bool {
return !it.chunk.valueAtIndex(i).Timestamp.Before(in.OldestInclusive)
// rangeValues implements chunkIterator.
func (it *deltaEncodedChunkIterator) rangeValues(in metric.Interval) metric.Values {
oldest := sort.Search(it.len, func(i int) bool {
return !it.timestampAtIndex(i).Before(in.OldestInclusive)
})
newest := sort.Search(it.chunk.len(), func(i int) bool {
return it.chunk.valueAtIndex(i).Timestamp.After(in.NewestInclusive)
newest := sort.Search(it.len, func(i int) bool {
return it.timestampAtIndex(i).After(in.NewestInclusive)
})
if oldest == it.chunk.len() {
if oldest == it.len {
return nil
}
result := make(metric.Values, 0, newest-oldest)
for i := oldest; i < newest; i++ {
result = append(result, *it.chunk.valueAtIndex(i))
result = append(result, metric.SamplePair{
Timestamp: it.timestampAtIndex(i),
Value: it.sampleValueAtIndex(i),
})
}
return result
}
// contains implements chunkIterator.
func (it *deltaEncodedChunkIterator) contains(t clientmodel.Timestamp) bool {
return !t.Before(it.chunk.firstTime()) && !t.After(it.chunk.lastTime())
return !t.Before(it.baseT) && !t.After(it.timestampAtIndex(it.len-1))
}
// values implements chunkIterator.
func (it *deltaEncodedChunkIterator) values() <-chan *metric.SamplePair {
valuesChan := make(chan *metric.SamplePair)
go func() {
for i := 0; i < it.len; i++ {
valuesChan <- &metric.SamplePair{
Timestamp: it.timestampAtIndex(i),
Value: it.sampleValueAtIndex(i),
}
}
close(valuesChan)
}()
return valuesChan
}
// timestampAtIndex implements chunkIterator.
func (it *deltaEncodedChunkIterator) timestampAtIndex(idx int) clientmodel.Timestamp {
offset := deltaHeaderBytes + idx*int(it.tBytes+it.vBytes)
switch it.tBytes {
case d1:
return it.baseT + clientmodel.Timestamp(uint8(it.c[offset]))
case d2:
return it.baseT + clientmodel.Timestamp(binary.LittleEndian.Uint16(it.c[offset:]))
case d4:
return it.baseT + clientmodel.Timestamp(binary.LittleEndian.Uint32(it.c[offset:]))
case d8:
// Take absolute value for d8.
return clientmodel.Timestamp(binary.LittleEndian.Uint64(it.c[offset:]))
default:
panic("Invalid number of bytes for time delta")
}
}
// lastTimestamp implements chunkIterator.
func (it *deltaEncodedChunkIterator) lastTimestamp() clientmodel.Timestamp {
return it.timestampAtIndex(it.len - 1)
}
// sampleValueAtIndex implements chunkIterator.
func (it *deltaEncodedChunkIterator) sampleValueAtIndex(idx int) clientmodel.SampleValue {
offset := deltaHeaderBytes + idx*int(it.tBytes+it.vBytes) + int(it.tBytes)
if it.isInt {
switch it.vBytes {
case d0:
return it.baseV
case d1:
return it.baseV + clientmodel.SampleValue(int8(it.c[offset]))
case d2:
return it.baseV + clientmodel.SampleValue(int16(binary.LittleEndian.Uint16(it.c[offset:])))
case d4:
return it.baseV + clientmodel.SampleValue(int32(binary.LittleEndian.Uint32(it.c[offset:])))
// No d8 for ints.
default:
panic("Invalid number of bytes for integer delta")
}
} else {
switch it.vBytes {
case d4:
return it.baseV + clientmodel.SampleValue(math.Float32frombits(binary.LittleEndian.Uint32(it.c[offset:])))
case d8:
// Take absolute value for d8.
return clientmodel.SampleValue(math.Float64frombits(binary.LittleEndian.Uint64(it.c[offset:])))
default:
panic("Invalid number of bytes for floating point delta")
}
}
}
// lastSampleValue implements chunkIterator.
func (it *deltaEncodedChunkIterator) lastSampleValue() clientmodel.SampleValue {
return it.sampleValueAtIndex(it.len - 1)
}

313
storage/local/doubledelta.go
View file

@ -199,15 +199,18 @@ func (c doubleDeltaEncodedChunk) firstTime() clientmodel.Timestamp {
return c.baseTime()
}
// lastTime implements chunk.
func (c doubleDeltaEncodedChunk) lastTime() clientmodel.Timestamp {
return c.valueAtIndex(c.len() - 1).Timestamp
}
// newIterator implements chunk.
func (c *doubleDeltaEncodedChunk) newIterator() chunkIterator {
return &doubleDeltaEncodedChunkIterator{
chunk: c,
c: *c,
len: c.len(),
baseT: c.baseTime(),
baseΔT: c.baseTimeDelta(),
baseV: c.baseValue(),
baseΔV: c.baseValueDelta(),
tBytes: c.timeBytes(),
vBytes: c.valueBytes(),
isInt: c.isInt(),
}
}
@ -245,19 +248,6 @@ func (c *doubleDeltaEncodedChunk) unmarshalFromBuf(buf []byte) {
*c = (*c)[:binary.LittleEndian.Uint16((*c)[doubleDeltaHeaderBufLenOffset:])]
}
// values implements chunk.
func (c doubleDeltaEncodedChunk) values() <-chan *metric.SamplePair {
n := c.len()
valuesChan := make(chan *metric.SamplePair)
go func() {
for i := 0; i < n; i++ {
valuesChan <- c.valueAtIndex(i)
}
close(valuesChan)
}()
return valuesChan
}
// encoding implements chunk.
func (c doubleDeltaEncodedChunk) encoding() chunkEncoding { return doubleDelta }
@ -280,6 +270,9 @@ func (c doubleDeltaEncodedChunk) baseValue() clientmodel.SampleValue {
}
func (c doubleDeltaEncodedChunk) baseTimeDelta() clientmodel.Timestamp {
if len(c) < doubleDeltaHeaderBaseTimeDeltaOffset+8 {
return 0
}
return clientmodel.Timestamp(
binary.LittleEndian.Uint64(
c[doubleDeltaHeaderBaseTimeDeltaOffset:],
@ -288,6 +281,9 @@ func (c doubleDeltaEncodedChunk) baseTimeDelta() clientmodel.Timestamp {
}
func (c doubleDeltaEncodedChunk) baseValueDelta() clientmodel.SampleValue {
if len(c) < doubleDeltaHeaderBaseValueDeltaOffset+8 {
return 0
}
return clientmodel.SampleValue(
math.Float64frombits(
binary.LittleEndian.Uint64(
@ -387,147 +383,196 @@ func (c doubleDeltaEncodedChunk) addSecondSample(s *metric.SamplePair, tb, vb de
return []chunk{&c}
}
func (c doubleDeltaEncodedChunk) valueAtIndex(idx int) *metric.SamplePair {
if idx == 0 {
return &metric.SamplePair{
Timestamp: c.baseTime(),
Value: c.baseValue(),
}
}
if idx == 1 {
// If time and/or value bytes are at d8, the time and value is
// saved directly rather than as a difference.
timestamp := c.baseTimeDelta()
if c.timeBytes() < d8 {
timestamp += c.baseTime()
}
value := c.baseValueDelta()
if c.valueBytes() < d8 {
value += c.baseValue()
}
return &metric.SamplePair{
Timestamp: timestamp,
Value: value,
}
}
offset := doubleDeltaHeaderBytes + (idx-2)*c.sampleSize()
var ts clientmodel.Timestamp
switch c.timeBytes() {
case d1:
ts = c.baseTime() +
clientmodel.Timestamp(idx)*c.baseTimeDelta() +
clientmodel.Timestamp(int8(c[offset]))
case d2:
ts = c.baseTime() +
clientmodel.Timestamp(idx)*c.baseTimeDelta() +
clientmodel.Timestamp(int16(binary.LittleEndian.Uint16(c[offset:])))
case d4:
ts = c.baseTime() +
clientmodel.Timestamp(idx)*c.baseTimeDelta() +
clientmodel.Timestamp(int32(binary.LittleEndian.Uint32(c[offset:])))
case d8:
// Take absolute value for d8.
ts = clientmodel.Timestamp(binary.LittleEndian.Uint64(c[offset:]))
default:
panic("Invalid number of bytes for time delta")
}
offset += int(c.timeBytes())
var v clientmodel.SampleValue
if c.isInt() {
switch c.valueBytes() {
case d0:
v = c.baseValue() +
clientmodel.SampleValue(idx)*c.baseValueDelta()
case d1:
v = c.baseValue() +
clientmodel.SampleValue(idx)*c.baseValueDelta() +
clientmodel.SampleValue(int8(c[offset]))
case d2:
v = c.baseValue() +
clientmodel.SampleValue(idx)*c.baseValueDelta() +
clientmodel.SampleValue(int16(binary.LittleEndian.Uint16(c[offset:])))
case d4:
v = c.baseValue() +
clientmodel.SampleValue(idx)*c.baseValueDelta() +
clientmodel.SampleValue(int32(binary.LittleEndian.Uint32(c[offset:])))
// No d8 for ints.
default:
panic("Invalid number of bytes for integer delta")
}
} else {
switch c.valueBytes() {
case d4:
v = c.baseValue() +
clientmodel.SampleValue(idx)*c.baseValueDelta() +
clientmodel.SampleValue(math.Float32frombits(binary.LittleEndian.Uint32(c[offset:])))
case d8:
// Take absolute value for d8.
v = clientmodel.SampleValue(math.Float64frombits(binary.LittleEndian.Uint64(c[offset:])))
default:
panic("Invalid number of bytes for floating point delta")
}
}
return &metric.SamplePair{
Timestamp: ts,
Value: v,
}
}
// doubleDeltaEncodedChunkIterator implements chunkIterator.
type doubleDeltaEncodedChunkIterator struct {
chunk *doubleDeltaEncodedChunk
// TODO(beorn7): add more fields here to keep track of last position.
c doubleDeltaEncodedChunk
len int
baseT, baseΔT clientmodel.Timestamp
baseV, baseΔV clientmodel.SampleValue
tBytes, vBytes deltaBytes
isInt bool
}
// getValueAtTime implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) getValueAtTime(t clientmodel.Timestamp) metric.Values {
// TODO(beorn7): Implement in a more efficient way making use of the
// state of the iterator and internals of the doubleDeltaChunk.
i := sort.Search(it.chunk.len(), func(i int) bool {
return !it.chunk.valueAtIndex(i).Timestamp.Before(t)
// length implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) length() int { return it.len }
// valueAtTime implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) valueAtTime(t clientmodel.Timestamp) metric.Values {
i := sort.Search(it.len, func(i int) bool {
return !it.timestampAtIndex(i).Before(t)
})
switch i {
case 0:
return metric.Values{*it.chunk.valueAtIndex(0)}
case it.chunk.len():
return metric.Values{*it.chunk.valueAtIndex(it.chunk.len() - 1)}
return metric.Values{metric.SamplePair{
Timestamp: it.timestampAtIndex(0),
Value: it.sampleValueAtIndex(0),
}}
case it.len:
return metric.Values{metric.SamplePair{
Timestamp: it.timestampAtIndex(it.len - 1),
Value: it.sampleValueAtIndex(it.len - 1),
}}
default:
v := it.chunk.valueAtIndex(i)
if v.Timestamp.Equal(t) {
return metric.Values{*v}
ts := it.timestampAtIndex(i)
if ts.Equal(t) {
return metric.Values{metric.SamplePair{
Timestamp: ts,
Value: it.sampleValueAtIndex(i),
}}
}
return metric.Values{
metric.SamplePair{
Timestamp: it.timestampAtIndex(i - 1),
Value: it.sampleValueAtIndex(i - 1),
},
metric.SamplePair{
Timestamp: ts,
Value: it.sampleValueAtIndex(i),
},
}
return metric.Values{*it.chunk.valueAtIndex(i - 1), *v}
}
}
// getRangeValues implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) getRangeValues(in metric.Interval) metric.Values {
// TODO(beorn7): Implement in a more efficient way making use of the
// state of the iterator and internals of the doubleDeltaChunk.
oldest := sort.Search(it.chunk.len(), func(i int) bool {
return !it.chunk.valueAtIndex(i).Timestamp.Before(in.OldestInclusive)
// rangeValues implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) rangeValues(in metric.Interval) metric.Values {
oldest := sort.Search(it.len, func(i int) bool {
return !it.timestampAtIndex(i).Before(in.OldestInclusive)
})
newest := sort.Search(it.chunk.len(), func(i int) bool {
return it.chunk.valueAtIndex(i).Timestamp.After(in.NewestInclusive)
newest := sort.Search(it.len, func(i int) bool {
return it.timestampAtIndex(i).After(in.NewestInclusive)
})
if oldest == it.chunk.len() {
if oldest == it.len {
return nil
}
result := make(metric.Values, 0, newest-oldest)
for i := oldest; i < newest; i++ {
result = append(result, *it.chunk.valueAtIndex(i))
result = append(result, metric.SamplePair{
Timestamp: it.timestampAtIndex(i),
Value: it.sampleValueAtIndex(i),
})
}
return result
}
// contains implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) contains(t clientmodel.Timestamp) bool {
return !t.Before(it.chunk.firstTime()) && !t.After(it.chunk.lastTime())
return !t.Before(it.baseT) && !t.After(it.timestampAtIndex(it.len-1))
}
// values implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) values() <-chan *metric.SamplePair {
valuesChan := make(chan *metric.SamplePair)
go func() {
for i := 0; i < it.len; i++ {
valuesChan <- &metric.SamplePair{
Timestamp: it.timestampAtIndex(i),
Value: it.sampleValueAtIndex(i),
}
}
close(valuesChan)
}()
return valuesChan
}
// timestampAtIndex implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) timestampAtIndex(idx int) clientmodel.Timestamp {
if idx == 0 {
return it.baseT
}
if idx == 1 {
// If time bytes are at d8, the time is saved directly rather
// than as a difference.
if it.tBytes == d8 {
return it.baseΔT
}
return it.baseT + it.baseΔT
}
offset := doubleDeltaHeaderBytes + (idx-2)*int(it.tBytes+it.vBytes)
switch it.tBytes {
case d1:
return it.baseT +
clientmodel.Timestamp(idx)*it.baseΔT +
clientmodel.Timestamp(int8(it.c[offset]))
case d2:
return it.baseT +
clientmodel.Timestamp(idx)*it.baseΔT +
clientmodel.Timestamp(int16(binary.LittleEndian.Uint16(it.c[offset:])))
case d4:
return it.baseT +
clientmodel.Timestamp(idx)*it.baseΔT +
clientmodel.Timestamp(int32(binary.LittleEndian.Uint32(it.c[offset:])))
case d8:
// Take absolute value for d8.
return clientmodel.Timestamp(binary.LittleEndian.Uint64(it.c[offset:]))
default:
panic("Invalid number of bytes for time delta")
}
}
// lastTimestamp implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) lastTimestamp() clientmodel.Timestamp {
return it.timestampAtIndex(it.len - 1)
}
// sampleValueAtIndex implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) sampleValueAtIndex(idx int) clientmodel.SampleValue {
if idx == 0 {
return it.baseV
}
if idx == 1 {
// If value bytes are at d8, the value is saved directly rather
// than as a difference.
if it.vBytes == d8 {
return it.baseΔV
}
return it.baseV + it.baseΔV
}
offset := doubleDeltaHeaderBytes + (idx-2)*int(it.tBytes+it.vBytes) + int(it.tBytes)
if it.isInt {
switch it.vBytes {
case d0:
return it.baseV +
clientmodel.SampleValue(idx)*it.baseΔV
case d1:
return it.baseV +
clientmodel.SampleValue(idx)*it.baseΔV +
clientmodel.SampleValue(int8(it.c[offset]))
case d2:
return it.baseV +
clientmodel.SampleValue(idx)*it.baseΔV +
clientmodel.SampleValue(int16(binary.LittleEndian.Uint16(it.c[offset:])))
case d4:
return it.baseV +
clientmodel.SampleValue(idx)*it.baseΔV +
clientmodel.SampleValue(int32(binary.LittleEndian.Uint32(it.c[offset:])))
// No d8 for ints.
default:
panic("Invalid number of bytes for integer delta")
}
} else {
switch it.vBytes {
case d4:
return it.baseV +
clientmodel.SampleValue(idx)*it.baseΔV +
clientmodel.SampleValue(math.Float32frombits(binary.LittleEndian.Uint32(it.c[offset:])))
case d8:
// Take absolute value for d8.
return clientmodel.SampleValue(math.Float64frombits(binary.LittleEndian.Uint64(it.c[offset:])))
default:
panic("Invalid number of bytes for floating point delta")
}
}
}
// lastSampleValue implements chunkIterator.
func (it *doubleDeltaEncodedChunkIterator) lastSampleValue() clientmodel.SampleValue {
return it.sampleValueAtIndex(it.len - 1)
}

26
storage/local/interface.go
View file

@ -38,11 +38,11 @@ type Storage interface {
NewPreloader() Preloader
// Get all of the metric fingerprints that are associated with the
// provided label matchers.
GetFingerprintsForLabelMatchers(metric.LabelMatchers) clientmodel.Fingerprints
FingerprintsForLabelMatchers(metric.LabelMatchers) clientmodel.Fingerprints
// Get all of the label values that are associated with a given label name.
GetLabelValuesForLabelName(clientmodel.LabelName) clientmodel.LabelValues
LabelValuesForLabelName(clientmodel.LabelName) clientmodel.LabelValues
// Get the metric associated with the provided fingerprint.
GetMetricForFingerprint(clientmodel.Fingerprint) clientmodel.COWMetric
MetricForFingerprint(clientmodel.Fingerprint) clientmodel.COWMetric
// Construct an iterator for a given fingerprint.
NewIterator(clientmodel.Fingerprint) SeriesIterator
// Run the various maintenance loops in goroutines. Returns when the
@ -53,28 +53,28 @@ type Storage interface {
// operations, stops all maintenance loops,and frees all resources.
Stop() error
// WaitForIndexing returns once all samples in the storage are
// indexed. Indexing is needed for GetFingerprintsForLabelMatchers and
// GetLabelValuesForLabelName and may lag behind.
// indexed. Indexing is needed for FingerprintsForLabelMatchers and
// LabelValuesForLabelName and may lag behind.
WaitForIndexing()
}
// SeriesIterator enables efficient access of sample values in a series. All
// methods are goroutine-safe. A SeriesIterator iterates over a snapshot of a
// series, i.e. it is safe to continue using a SeriesIterator after modifying
// the corresponding series, but the iterator will represent the state of the
// series prior the modification.
// SeriesIterator enables efficient access of sample values in a series. Its
// methods are not goroutine-safe. A SeriesIterator iterates over a snapshot of
// a series, i.e. it is safe to continue using a SeriesIterator after or during
// modifying the corresponding series, but the iterator will represent the state
// of the series prior the modification.
type SeriesIterator interface {
// Gets the two values that are immediately adjacent to a given time. In
// case a value exist at precisely the given time, only that single
// value is returned. Only the first or last value is returned (as a
// single value), if the given time is before or after the first or last
// value, respectively.
GetValueAtTime(clientmodel.Timestamp) metric.Values
ValueAtTime(clientmodel.Timestamp) metric.Values
// Gets the boundary values of an interval: the first and last value
// within a given interval.
GetBoundaryValues(metric.Interval) metric.Values
BoundaryValues(metric.Interval) metric.Values
// Gets all values contained within a given interval.
GetRangeValues(metric.Interval) metric.Values
RangeValues(metric.Interval) metric.Values
}
// A Preloader preloads series data necessary for a query into memory and pins

2
storage/local/mapper.go
View file

@ -93,7 +93,7 @@ func (r *fpMapper) mapFP(fp clientmodel.Fingerprint, m clientmodel.Metric) (clie
// If we are here, FP does not exist in memory and is either not mapped
// at all, or existing mappings for FP are not for m. Check if we have
// something for FP in the archive.
archivedMetric, err := r.p.getArchivedMetric(fp)
archivedMetric, err := r.p.archivedMetric(fp)
if err != nil {
return fp, err
}

56
storage/local/persistence.go
View file

@ -319,11 +319,11 @@ func (p *persistence) setDirty(dirty bool) {
}
}
// getFingerprintsForLabelPair returns the fingerprints for the given label
// fingerprintsForLabelPair returns the fingerprints for the given label
// pair. This method is goroutine-safe but take into account that metrics queued
// for indexing with IndexMetric might not have made it into the index
// yet. (Same applies correspondingly to UnindexMetric.)
func (p *persistence) getFingerprintsForLabelPair(lp metric.LabelPair) (clientmodel.Fingerprints, error) {
func (p *persistence) fingerprintsForLabelPair(lp metric.LabelPair) (clientmodel.Fingerprints, error) {
fps, _, err := p.labelPairToFingerprints.Lookup(lp)
if err != nil {
return nil, err
@ -331,11 +331,11 @@ func (p *persistence) getFingerprintsForLabelPair(lp metric.LabelPair) (clientmo
return fps, nil
}
// getLabelValuesForLabelName returns the label values for the given label
// labelValuesForLabelName returns the label values for the given label
// name. This method is goroutine-safe but take into account that metrics queued
// for indexing with IndexMetric might not have made it into the index
// yet. (Same applies correspondingly to UnindexMetric.)
func (p *persistence) getLabelValuesForLabelName(ln clientmodel.LabelName) (clientmodel.LabelValues, error) {
func (p *persistence) labelValuesForLabelName(ln clientmodel.LabelName) (clientmodel.LabelValues, error) {
lvs, _, err := p.labelNameToLabelValues.Lookup(ln)
if err != nil {
return nil, err
@ -632,10 +632,10 @@ func (p *persistence) checkpointSeriesMapAndHeads(fingerprintToSeries *seriesMap
}
} else {
// This is the non-persisted head chunk. Fully marshal it.
if err = w.WriteByte(byte(chunkDesc.chunk.encoding())); err != nil {
if err = w.WriteByte(byte(chunkDesc.c.encoding())); err != nil {
return
}
if err = chunkDesc.chunk.marshal(w); err != nil {
if err = chunkDesc.c.marshal(w); err != nil {
return
}
}
@ -880,7 +880,7 @@ func (p *persistence) dropAndPersistChunks(
// too old. If that's the case, the chunks in the series file
// are all too old, too.
i := 0
for ; i < len(chunks) && chunks[i].lastTime().Before(beforeTime); i++ {
for ; i < len(chunks) && chunks[i].newIterator().lastTimestamp().Before(beforeTime); i++ {
}
if i < len(chunks) {
firstTimeNotDropped = chunks[i].firstTime()
@ -1017,10 +1017,10 @@ func (p *persistence) deleteSeriesFile(fp clientmodel.Fingerprint) (int, error)
return numChunks, nil
}
// getSeriesFileModTime returns the modification time of the series file
// belonging to the provided fingerprint. In case of an error, the zero value of
// time.Time is returned.
func (p *persistence) getSeriesFileModTime(fp clientmodel.Fingerprint) time.Time {
// seriesFileModTime returns the modification time of the series file belonging
// to the provided fingerprint. In case of an error, the zero value of time.Time
// is returned.
func (p *persistence) seriesFileModTime(fp clientmodel.Fingerprint) time.Time {
var modTime time.Time
if fi, err := os.Stat(p.fileNameForFingerprint(fp)); err == nil {
return fi.ModTime()
@ -1029,17 +1029,17 @@ func (p *persistence) getSeriesFileModTime(fp clientmodel.Fingerprint) time.Time
}
// indexMetric queues the given metric for addition to the indexes needed by
// getFingerprintsForLabelPair, getLabelValuesForLabelName, and
// getFingerprintsModifiedBefore. If the queue is full, this method blocks
// until the metric can be queued. This method is goroutine-safe.
// fingerprintsForLabelPair, labelValuesForLabelName, and
// fingerprintsModifiedBefore. If the queue is full, this method blocks until
// the metric can be queued. This method is goroutine-safe.
func (p *persistence) indexMetric(fp clientmodel.Fingerprint, m clientmodel.Metric) {
p.indexingQueue <- indexingOp{fp, m, add}
}
// unindexMetric queues references to the given metric for removal from the
// indexes used for getFingerprintsForLabelPair, getLabelValuesForLabelName, and
// getFingerprintsModifiedBefore. The index of fingerprints to archived metrics
// is not affected by this removal. (In fact, never call this method for an
// indexes used for fingerprintsForLabelPair, labelValuesForLabelName, and
// fingerprintsModifiedBefore. The index of fingerprints to archived metrics is
// not affected by this removal. (In fact, never call this method for an
// archived metric. To purge an archived metric, call purgeArchivedFingerprint.)
// If the queue is full, this method blocks until the metric can be queued. This
// method is goroutine-safe.
@ -1097,10 +1097,10 @@ func (p *persistence) updateArchivedTimeRange(
return p.archivedFingerprintToTimeRange.Put(codable.Fingerprint(fp), codable.TimeRange{First: first, Last: last})
}
// getFingerprintsModifiedBefore returns the fingerprints of archived timeseries
// fingerprintsModifiedBefore returns the fingerprints of archived timeseries
// that have live samples before the provided timestamp. This method is
// goroutine-safe.
func (p *persistence) getFingerprintsModifiedBefore(beforeTime clientmodel.Timestamp) ([]clientmodel.Fingerprint, error) {
func (p *persistence) fingerprintsModifiedBefore(beforeTime clientmodel.Timestamp) ([]clientmodel.Fingerprint, error) {
var fp codable.Fingerprint
var tr codable.TimeRange
fps := []clientmodel.Fingerprint{}
@ -1119,9 +1119,9 @@ func (p *persistence) getFingerprintsModifiedBefore(beforeTime clientmodel.Times
return fps, nil
}
// getArchivedMetric retrieves the archived metric with the given
// fingerprint. This method is goroutine-safe.
func (p *persistence) getArchivedMetric(fp clientmodel.Fingerprint) (clientmodel.Metric, error) {
// archivedMetric retrieves the archived metric with the given fingerprint. This
// method is goroutine-safe.
func (p *persistence) archivedMetric(fp clientmodel.Fingerprint) (clientmodel.Metric, error) {
metric, _, err := p.archivedFingerprintToMetrics.Lookup(fp)
return metric, err
}
@ -1137,7 +1137,7 @@ func (p *persistence) purgeArchivedMetric(fp clientmodel.Fingerprint) (err error
}
}()
metric, err := p.getArchivedMetric(fp)
metric, err := p.archivedMetric(fp)
if err != nil || metric == nil {
return err
}
@ -1567,8 +1567,14 @@ func chunkIndexForOffset(offset int64) (int, error) {
func writeChunkHeader(w io.Writer, c chunk) error {
header := make([]byte, chunkHeaderLen)
header[chunkHeaderTypeOffset] = byte(c.encoding())
binary.LittleEndian.PutUint64(header[chunkHeaderFirstTimeOffset:], uint64(c.firstTime()))
binary.LittleEndian.PutUint64(header[chunkHeaderLastTimeOffset:], uint64(c.lastTime()))
binary.LittleEndian.PutUint64(
header[chunkHeaderFirstTimeOffset:],
uint64(c.firstTime()),
)
binary.LittleEndian.PutUint64(
header[chunkHeaderLastTimeOffset:],
uint64(c.newIterator().lastTimestamp()),
)
_, err := w.Write(header)
return err
}

36
storage/local/persistence_test.go
View file

@ -70,8 +70,8 @@ func buildTestChunks(encoding chunkEncoding) map[clientmodel.Fingerprint][]chunk
}
func chunksEqual(c1, c2 chunk) bool {
values2 := c2.values()
for v1 := range c1.values() {
values2 := c2.newIterator().values()
for v1 := range c1.newIterator().values() {
v2 := <-values2
if !v1.Equal(v2) {
return false
@ -397,7 +397,7 @@ func testCheckpointAndLoadSeriesMapAndHeads(t *testing.T, encoding chunkEncoding
if !reflect.DeepEqual(loadedS1.metric, m1) {
t.Errorf("want metric %v, got %v", m1, loadedS1.metric)
}
if !reflect.DeepEqual(loadedS1.head().chunk, s1.head().chunk) {
if !reflect.DeepEqual(loadedS1.head().c, s1.head().c) {
t.Error("head chunks differ")
}
if loadedS1.chunkDescsOffset != 0 {
@ -413,7 +413,7 @@ func testCheckpointAndLoadSeriesMapAndHeads(t *testing.T, encoding chunkEncoding
if !reflect.DeepEqual(loadedS3.metric, m3) {
t.Errorf("want metric %v, got %v", m3, loadedS3.metric)
}
if loadedS3.head().chunk != nil {
if loadedS3.head().c != nil {
t.Error("head chunk not evicted")
}
if loadedS3.chunkDescsOffset != -1 {
@ -515,7 +515,7 @@ func TestCheckpointAndLoadFPMappings(t *testing.T) {
}
}
func testGetFingerprintsModifiedBefore(t *testing.T, encoding chunkEncoding) {
func testFingerprintsModifiedBefore(t *testing.T, encoding chunkEncoding) {
p, closer := newTestPersistence(t, encoding)
defer closer.Close()
@ -537,7 +537,7 @@ func testGetFingerprintsModifiedBefore(t *testing.T, encoding chunkEncoding) {
}
for ts, want := range expectedFPs {
got, err := p.getFingerprintsModifiedBefore(ts)
got, err := p.fingerprintsModifiedBefore(ts)
if err != nil {
t.Fatal(err)
}
@ -575,7 +575,7 @@ func testGetFingerprintsModifiedBefore(t *testing.T, encoding chunkEncoding) {
}
for ts, want := range expectedFPs {
got, err := p.getFingerprintsModifiedBefore(ts)
got, err := p.fingerprintsModifiedBefore(ts)
if err != nil {
t.Fatal(err)
}
@ -585,12 +585,12 @@ func testGetFingerprintsModifiedBefore(t *testing.T, encoding chunkEncoding) {
}
}
func TestGetFingerprintsModifiedBeforeChunkType0(t *testing.T) {
testGetFingerprintsModifiedBefore(t, 0)
func TestFingerprintsModifiedBeforeChunkType0(t *testing.T) {
testFingerprintsModifiedBefore(t, 0)
}
func TestGetFingerprintsModifiedBeforeChunkType1(t *testing.T) {
testGetFingerprintsModifiedBefore(t, 1)
func TestFingerprintsModifiedBeforeChunkType1(t *testing.T) {
testFingerprintsModifiedBefore(t, 1)
}
func testDropArchivedMetric(t *testing.T, encoding chunkEncoding) {
@ -605,7 +605,7 @@ func testDropArchivedMetric(t *testing.T, encoding chunkEncoding) {
p.indexMetric(2, m2)
p.waitForIndexing()
outFPs, err := p.getFingerprintsForLabelPair(metric.LabelPair{Name: "n1", Value: "v1"})
outFPs, err := p.fingerprintsForLabelPair(metric.LabelPair{Name: "n1", Value: "v1"})
if err != nil {
t.Fatal(err)
}
@ -613,7 +613,7 @@ func testDropArchivedMetric(t *testing.T, encoding chunkEncoding) {
if !reflect.DeepEqual(outFPs, want) {
t.Errorf("want %#v, got %#v", want, outFPs)
}
outFPs, err = p.getFingerprintsForLabelPair(metric.LabelPair{Name: "n2", Value: "v2"})
outFPs, err = p.fingerprintsForLabelPair(metric.LabelPair{Name: "n2", Value: "v2"})
if err != nil {
t.Fatal(err)
}
@ -637,7 +637,7 @@ func testDropArchivedMetric(t *testing.T, encoding chunkEncoding) {
}
p.waitForIndexing()
outFPs, err = p.getFingerprintsForLabelPair(metric.LabelPair{Name: "n1", Value: "v1"})
outFPs, err = p.fingerprintsForLabelPair(metric.LabelPair{Name: "n1", Value: "v1"})
if err != nil {
t.Fatal(err)
}
@ -645,7 +645,7 @@ func testDropArchivedMetric(t *testing.T, encoding chunkEncoding) {
if !reflect.DeepEqual(outFPs, want) {
t.Errorf("want %#v, got %#v", want, outFPs)
}
outFPs, err = p.getFingerprintsForLabelPair(metric.LabelPair{Name: "n2", Value: "v2"})
outFPs, err = p.fingerprintsForLabelPair(metric.LabelPair{Name: "n2", Value: "v2"})
if err != nil {
t.Fatal(err)
}
@ -858,7 +858,7 @@ func verifyIndexedState(i int, t *testing.T, b incrementalBatch, indexedFpsToMet
p.waitForIndexing()
for fp, m := range indexedFpsToMetrics {
// Compare archived metrics with input metrics.
mOut, err := p.getArchivedMetric(fp)
mOut, err := p.archivedMetric(fp)
if err != nil {
t.Fatal(err)
}
@ -884,7 +884,7 @@ func verifyIndexedState(i int, t *testing.T, b incrementalBatch, indexedFpsToMet
// Compare label name -> label values mappings.
for ln, lvs := range b.expectedLnToLvs {
outLvs, err := p.getLabelValuesForLabelName(ln)
outLvs, err := p.labelValuesForLabelName(ln)
if err != nil {
t.Fatal(err)
}
@ -901,7 +901,7 @@ func verifyIndexedState(i int, t *testing.T, b incrementalBatch, indexedFpsToMet
// Compare label pair -> fingerprints mappings.
for lp, fps := range b.expectedLpToFps {
outFPs, err := p.getFingerprintsForLabelPair(lp)
outFPs, err := p.fingerprintsForLabelPair(lp)
if err != nil {
t.Fatal(err)
}

16
storage/local/preload.go
View file

@ -40,8 +40,8 @@ func (p *memorySeriesPreloader) PreloadRange(
}
/*
// GetMetricAtTime implements Preloader.
func (p *memorySeriesPreloader) GetMetricAtTime(fp clientmodel.Fingerprint, t clientmodel.Timestamp) error {
// MetricAtTime implements Preloader.
func (p *memorySeriesPreloader) MetricAtTime(fp clientmodel.Fingerprint, t clientmodel.Timestamp) error {
cds, err := p.storage.preloadChunks(fp, &timeSelector{
from: t,
through: t,
@ -53,8 +53,8 @@ func (p *memorySeriesPreloader) GetMetricAtTime(fp clientmodel.Fingerprint, t cl
return nil
}
// GetMetricAtInterval implements Preloader.
func (p *memorySeriesPreloader) GetMetricAtInterval(fp clientmodel.Fingerprint, from, through clientmodel.Timestamp, interval time.Duration) error {
// MetricAtInterval implements Preloader.
func (p *memorySeriesPreloader) MetricAtInterval(fp clientmodel.Fingerprint, from, through clientmodel.Timestamp, interval time.Duration) error {
cds, err := p.storage.preloadChunks(fp, &timeSelector{
from: from,
through: through,
@ -67,8 +67,8 @@ func (p *memorySeriesPreloader) GetMetricAtInterval(fp clientmodel.Fingerprint,
return
}
// GetMetricRange implements Preloader.
func (p *memorySeriesPreloader) GetMetricRange(fp clientmodel.Fingerprint, t clientmodel.Timestamp, rangeDuration time.Duration) error {
// MetricRange implements Preloader.
func (p *memorySeriesPreloader) MetricRange(fp clientmodel.Fingerprint, t clientmodel.Timestamp, rangeDuration time.Duration) error {
cds, err := p.storage.preloadChunks(fp, &timeSelector{
from: t,
through: t,
@ -81,8 +81,8 @@ func (p *memorySeriesPreloader) GetMetricRange(fp clientmodel.Fingerprint, t cli
return
}
// GetMetricRangeAtInterval implements Preloader.
func (p *memorySeriesPreloader) GetMetricRangeAtInterval(fp clientmodel.Fingerprint, from, through clientmodel.Timestamp, interval, rangeDuration time.Duration) error {
// MetricRangeAtInterval implements Preloader.
func (p *memorySeriesPreloader) MetricRangeAtInterval(fp clientmodel.Fingerprint, from, through clientmodel.Timestamp, interval, rangeDuration time.Duration) error {
cds, err := p.storage.preloadChunks(fp, &timeSelector{
from: from,
through: through,

187
storage/local/series.go
View file

@ -208,7 +208,7 @@ func (s *memorySeries) add(v *metric.SamplePair) int {
newHead := newChunkDesc(newChunk())
s.chunkDescs = append(s.chunkDescs, newHead)
s.headChunkClosed = false
} else if s.headChunkUsedByIterator && s.head().getRefCount() > 1 {
} else if s.headChunkUsedByIterator && s.head().refCount() > 1 {
// We only need to clone the head chunk if the current head
// chunk was used in an iterator at all and if the refCount is
// still greater than the 1 we always have because the head
@ -221,12 +221,12 @@ func (s *memorySeries) add(v *metric.SamplePair) int {
chunkOps.WithLabelValues(clone).Inc()
// No locking needed here because a non-persisted head chunk can
// not get evicted concurrently.
s.head().chunk = s.head().chunk.clone()
s.head().c = s.head().c.clone()
s.headChunkUsedByIterator = false
}
chunks := s.head().add(v)
s.head().chunk = chunks[0]
s.head().c = chunks[0]
for _, c := range chunks[1:] {
s.chunkDescs = append(s.chunkDescs, newChunkDesc(c))
@ -415,10 +415,10 @@ func (s *memorySeries) preloadChunksForRange(
// newIterator returns a new SeriesIterator. The caller must have locked the
// fingerprint of the memorySeries.
func (s *memorySeries) newIterator(lockFunc, unlockFunc func()) SeriesIterator {
func (s *memorySeries) newIterator() SeriesIterator {
chunks := make([]chunk, 0, len(s.chunkDescs))
for i, cd := range s.chunkDescs {
if chunk := cd.getChunk(); chunk != nil {
if chunk := cd.chunk(); chunk != nil {
if i == len(s.chunkDescs)-1 && !s.headChunkClosed {
s.headChunkUsedByIterator = true
}
@ -427,9 +427,8 @@ func (s *memorySeries) newIterator(lockFunc, unlockFunc func()) SeriesIterator {
}
return &memorySeriesIterator{
lock: lockFunc,
unlock: unlockFunc,
chunks: chunks,
chunkIts: make([]chunkIterator, len(chunks)),
}
}
@ -449,13 +448,13 @@ func (s *memorySeries) firstTime() clientmodel.Timestamp {
return s.savedFirstTime
}
// getChunksToPersist returns a slice of chunkDescs eligible for
// persistence. It's the caller's responsibility to actually persist the
// returned chunks afterwards. The method sets the persistWatermark and the
// dirty flag accordingly.
// chunksToPersist returns a slice of chunkDescs eligible for persistence. It's
// the caller's responsibility to actually persist the returned chunks
// afterwards. The method sets the persistWatermark and the dirty flag
// accordingly.
//
// The caller must have locked the fingerprint of the series.
func (s *memorySeries) getChunksToPersist() []*chunkDesc {
func (s *memorySeries) chunksToPersist() []*chunkDesc {
newWatermark := len(s.chunkDescs)
if !s.headChunkClosed {
newWatermark--
@ -471,108 +470,124 @@ func (s *memorySeries) getChunksToPersist() []*chunkDesc {
// memorySeriesIterator implements SeriesIterator.
type memorySeriesIterator struct {
lock, unlock func()
chunkIt chunkIterator
chunkIt chunkIterator // Last chunkIterator used by ValueAtTime.
chunkIts []chunkIterator // Caches chunkIterators.
chunks []chunk
}
// GetValueAtTime implements SeriesIterator.
func (it *memorySeriesIterator) GetValueAtTime(t clientmodel.Timestamp) metric.Values {
it.lock()
defer it.unlock()
// ValueAtTime implements SeriesIterator.
func (it *memorySeriesIterator) ValueAtTime(t clientmodel.Timestamp) metric.Values {
// The most common case. We are iterating through a chunk.
if it.chunkIt != nil && it.chunkIt.contains(t) {
return it.chunkIt.getValueAtTime(t)
return it.chunkIt.valueAtTime(t)
}
it.chunkIt = nil
if len(it.chunks) == 0 {
return nil
}
// Before or exactly on the first sample of the series.
if !t.After(it.chunks[0].firstTime()) {
it.chunkIt = it.chunkIterator(0)
ts := it.chunkIt.timestampAtIndex(0)
if !t.After(ts) {
// return first value of first chunk
return it.chunks[0].newIterator().getValueAtTime(t)
}
// After or exactly on the last sample of the series.
if !t.Before(it.chunks[len(it.chunks)-1].lastTime()) {
// return last value of last chunk
return it.chunks[len(it.chunks)-1].newIterator().getValueAtTime(t)
return metric.Values{metric.SamplePair{
Timestamp: ts,
Value: it.chunkIt.sampleValueAtIndex(0),
}}
}
// Find first chunk where lastTime() is after or equal to t.
// After or exactly on the last sample of the series.
it.chunkIt = it.chunkIterator(len(it.chunks) - 1)
ts = it.chunkIt.lastTimestamp()
if !t.Before(ts) {
// return last value of last chunk
return metric.Values{metric.SamplePair{
Timestamp: ts,
Value: it.chunkIt.sampleValueAtIndex(it.chunkIt.length() - 1),
}}
}
// Find last chunk where firstTime() is before or equal to t.
l := len(it.chunks) - 1
i := sort.Search(len(it.chunks), func(i int) bool {
return !it.chunks[i].lastTime().Before(t)
return !it.chunks[l-i].firstTime().After(t)
})
if i == len(it.chunks) {
panic("out of bounds")
}
if t.Before(it.chunks[i].firstTime()) {
it.chunkIt = it.chunkIterator(l - i)
ts = it.chunkIt.lastTimestamp()
if t.After(ts) {
// We ended up between two chunks.
sp1 := metric.SamplePair{
Timestamp: ts,
Value: it.chunkIt.sampleValueAtIndex(it.chunkIt.length() - 1),
}
it.chunkIt = it.chunkIterator(l - i + 1)
return metric.Values{
it.chunks[i-1].newIterator().getValueAtTime(t)[0],
it.chunks[i].newIterator().getValueAtTime(t)[0],
sp1,
metric.SamplePair{
Timestamp: it.chunkIt.timestampAtIndex(0),
Value: it.chunkIt.sampleValueAtIndex(0),
},
}
}
// We ended up in the middle of a chunk. We might stay there for a while,
// so save it as the current chunk iterator.
it.chunkIt = it.chunks[i].newIterator()
return it.chunkIt.getValueAtTime(t)
return it.chunkIt.valueAtTime(t)
}
// GetBoundaryValues implements SeriesIterator.
func (it *memorySeriesIterator) GetBoundaryValues(in metric.Interval) metric.Values {
it.lock()
defer it.unlock()
// Find the first relevant chunk.
// BoundaryValues implements SeriesIterator.
func (it *memorySeriesIterator) BoundaryValues(in metric.Interval) metric.Values {
// Find the first chunk for which the first sample is within the interval.
i := sort.Search(len(it.chunks), func(i int) bool {
return !it.chunks[i].lastTime().Before(in.OldestInclusive)
return !it.chunks[i].firstTime().Before(in.OldestInclusive)
})
// Only now check the last timestamp of the previous chunk (which is
// fairly expensive).
if i > 0 && !it.chunkIterator(i-1).lastTimestamp().Before(in.OldestInclusive) {
i--
}
values := make(metric.Values, 0, 2)
for i, c := range it.chunks[i:] {
var chunkIt chunkIterator
for j, c := range it.chunks[i:] {
if c.firstTime().After(in.NewestInclusive) {
if len(values) == 1 {
// We found the first value before, but are now
// We found the first value before but are now
// already past the last value. The value we
// want must be the last value of the previous
// chunk. So backtrack...
chunkIt = it.chunks[i-1].newIterator()
values = append(values, chunkIt.getValueAtTime(in.NewestInclusive)[0])
chunkIt := it.chunkIterator(i + j - 1)
values = append(values, metric.SamplePair{
Timestamp: chunkIt.lastTimestamp(),
Value: chunkIt.lastSampleValue(),
})
}
break
}
chunkIt := it.chunkIterator(i + j)
if len(values) == 0 {
chunkIt = c.newIterator()
firstValues := chunkIt.getValueAtTime(in.OldestInclusive)
firstValues := chunkIt.valueAtTime(in.OldestInclusive)
switch len(firstValues) {
case 2:
values = append(values, firstValues[1])
case 1:
values = firstValues
default:
panic("unexpected return from getValueAtTime")
panic("unexpected return from valueAtTime")
}
}
if c.lastTime().After(in.NewestInclusive) {
if chunkIt == nil {
chunkIt = c.newIterator()
}
values = append(values, chunkIt.getValueAtTime(in.NewestInclusive)[0])
if chunkIt.lastTimestamp().After(in.NewestInclusive) {
values = append(values, chunkIt.valueAtTime(in.NewestInclusive)[0])
break
}
}
if len(values) == 1 {
// We found exactly one value. In that case, add the most recent we know.
values = append(
values,
it.chunks[len(it.chunks)-1].newIterator().getValueAtTime(in.NewestInclusive)[0],
)
chunkIt := it.chunkIterator(len(it.chunks) - 1)
values = append(values, metric.SamplePair{
Timestamp: chunkIt.lastTimestamp(),
Value: chunkIt.lastSampleValue(),
})
}
if len(values) == 2 && values[0].Equal(&values[1]) {
return values[:1]
@ -580,41 +595,53 @@ func (it *memorySeriesIterator) GetBoundaryValues(in metric.Interval) metric.Val
return values
}
// GetRangeValues implements SeriesIterator.
func (it *memorySeriesIterator) GetRangeValues(in metric.Interval) metric.Values {
it.lock()
defer it.unlock()
// Find the first relevant chunk.
// RangeValues implements SeriesIterator.
func (it *memorySeriesIterator) RangeValues(in metric.Interval) metric.Values {
// Find the first chunk for which the first sample is within the interval.
i := sort.Search(len(it.chunks), func(i int) bool {
return !it.chunks[i].lastTime().Before(in.OldestInclusive)
return !it.chunks[i].firstTime().Before(in.OldestInclusive)
})
// Only now check the last timestamp of the previous chunk (which is
// fairly expensive).
if i > 0 && !it.chunkIterator(i-1).lastTimestamp().Before(in.OldestInclusive) {
i--
}
values := metric.Values{}
for _, c := range it.chunks[i:] {
for j, c := range it.chunks[i:] {
if c.firstTime().After(in.NewestInclusive) {
break
}
// TODO: actually reuse an iterator between calls if we get multiple ranges
// from the same chunk.
values = append(values, c.newIterator().getRangeValues(in)...)
values = append(values, it.chunkIterator(i+j).rangeValues(in)...)
}
return values
}
// chunkIterator returns the chunkIterator for the chunk at position i (and
// creates it if needed).
func (it *memorySeriesIterator) chunkIterator(i int) chunkIterator {
chunkIt := it.chunkIts[i]
if chunkIt == nil {
chunkIt = it.chunks[i].newIterator()
it.chunkIts[i] = chunkIt
}
return chunkIt
}
// nopSeriesIterator implements Series Iterator. It never returns any values.
type nopSeriesIterator struct{}
// GetValueAtTime implements SeriesIterator.
func (_ nopSeriesIterator) GetValueAtTime(t clientmodel.Timestamp) metric.Values {
// ValueAtTime implements SeriesIterator.
func (_ nopSeriesIterator) ValueAtTime(t clientmodel.Timestamp) metric.Values {
return metric.Values{}
}
// GetBoundaryValues implements SeriesIterator.
func (_ nopSeriesIterator) GetBoundaryValues(in metric.Interval) metric.Values {
// BoundaryValues implements SeriesIterator.
func (_ nopSeriesIterator) BoundaryValues(in metric.Interval) metric.Values {
return metric.Values{}
}
// GetRangeValues implements SeriesIterator.
func (_ nopSeriesIterator) GetRangeValues(in metric.Interval) metric.Values {
// RangeValues implements SeriesIterator.
func (_ nopSeriesIterator) RangeValues(in metric.Interval) metric.Values {
return metric.Values{}
}

38
storage/local/storage.go
View file

@ -278,10 +278,7 @@ func (s *memorySeriesStorage) NewIterator(fp clientmodel.Fingerprint) SeriesIter
// return any values.
return nopSeriesIterator{}
}
return series.newIterator(
func() { s.fpLocker.Lock(fp) },
func() { s.fpLocker.Unlock(fp) },
)
return series.newIterator()
}
// NewPreloader implements Storage.
@ -291,14 +288,14 @@ func (s *memorySeriesStorage) NewPreloader() Preloader {
}
}
// GetFingerprintsForLabelMatchers implements Storage.
func (s *memorySeriesStorage) GetFingerprintsForLabelMatchers(labelMatchers metric.LabelMatchers) clientmodel.Fingerprints {
// FingerprintsForLabelMatchers implements Storage.
func (s *memorySeriesStorage) FingerprintsForLabelMatchers(labelMatchers metric.LabelMatchers) clientmodel.Fingerprints {
var result map[clientmodel.Fingerprint]struct{}
for _, matcher := range labelMatchers {
intersection := map[clientmodel.Fingerprint]struct{}{}
switch matcher.Type {
case metric.Equal:
fps, err := s.persistence.getFingerprintsForLabelPair(
fps, err := s.persistence.fingerprintsForLabelPair(
metric.LabelPair{
Name: matcher.Name,
Value: matcher.Value,
@ -316,7 +313,7 @@ func (s *memorySeriesStorage) GetFingerprintsForLabelMatchers(labelMatchers metr
}
}
default:
values, err := s.persistence.getLabelValuesForLabelName(matcher.Name)
values, err := s.persistence.labelValuesForLabelName(matcher.Name)
if err != nil {
log.Errorf("Error getting label values for label name %q: %v", matcher.Name, err)
}
@ -325,7 +322,7 @@ func (s *memorySeriesStorage) GetFingerprintsForLabelMatchers(labelMatchers metr
return nil
}
for _, v := range matches {
fps, err := s.persistence.getFingerprintsForLabelPair(
fps, err := s.persistence.fingerprintsForLabelPair(
metric.LabelPair{
Name: matcher.Name,
Value: v,
@ -354,17 +351,17 @@ func (s *memorySeriesStorage) GetFingerprintsForLabelMatchers(labelMatchers metr
return fps
}
// GetLabelValuesForLabelName implements Storage.
func (s *memorySeriesStorage) GetLabelValuesForLabelName(labelName clientmodel.LabelName) clientmodel.LabelValues {
lvs, err := s.persistence.getLabelValuesForLabelName(labelName)
// LabelValuesForLabelName implements Storage.
func (s *memorySeriesStorage) LabelValuesForLabelName(labelName clientmodel.LabelName) clientmodel.LabelValues {
lvs, err := s.persistence.labelValuesForLabelName(labelName)
if err != nil {
log.Errorf("Error getting label values for label name %q: %v", labelName, err)
}
return lvs
}
// GetMetricForFingerprint implements Storage.
func (s *memorySeriesStorage) GetMetricForFingerprint(fp clientmodel.Fingerprint) clientmodel.COWMetric {
// MetricForFingerprint implements Storage.
func (s *memorySeriesStorage) MetricForFingerprint(fp clientmodel.Fingerprint) clientmodel.COWMetric {
s.fpLocker.Lock(fp)
defer s.fpLocker.Unlock(fp)
@ -376,7 +373,7 @@ func (s *memorySeriesStorage) GetMetricForFingerprint(fp clientmodel.Fingerprint
Metric: series.metric,
}
}
metric, err := s.persistence.getArchivedMetric(fp)
metric, err := s.persistence.archivedMetric(fp)
if err != nil {
log.Errorf("Error retrieving archived metric for fingerprint %v: %v", fp, err)
}
@ -459,7 +456,7 @@ func (s *memorySeriesStorage) preloadChunksForRange(
return nil, nil
}
if from.Add(-stalenessDelta).Before(last) && through.Add(stalenessDelta).After(first) {
metric, err := s.persistence.getArchivedMetric(fp)
metric, err := s.persistence.archivedMetric(fp)
if err != nil {
return nil, err
}
@ -648,7 +645,7 @@ func (s *memorySeriesStorage) cycleThroughArchivedFingerprints() chan clientmode
defer close(archivedFingerprints)
for {
archivedFPs, err := s.persistence.getFingerprintsModifiedBefore(
archivedFPs, err := s.persistence.fingerprintsModifiedBefore(
clientmodel.TimestampFromTime(time.Now()).Add(-s.dropAfter),
)
if err != nil {
@ -844,20 +841,21 @@ func (s *memorySeriesStorage) maintainMemorySeries(
func (s *memorySeriesStorage) writeMemorySeries(
fp clientmodel.Fingerprint, series *memorySeries, beforeTime clientmodel.Timestamp,
) bool {
cds := series.getChunksToPersist()
cds := series.chunksToPersist()
defer func() {
for _, cd := range cds {
cd.unpin(s.evictRequests)
}
s.incNumChunksToPersist(-len(cds))
chunkOps.WithLabelValues(persistAndUnpin).Add(float64(len(cds)))
series.modTime = s.persistence.getSeriesFileModTime(fp)
series.modTime = s.persistence.seriesFileModTime(fp)
}()
// Get the actual chunks from underneath the chunkDescs.
// No lock required as chunks still to persist cannot be evicted.
chunks := make([]chunk, len(cds))
for i, cd := range cds {
chunks[i] = cd.chunk
chunks[i] = cd.c
}
if !series.firstTime().Before(beforeTime) {

200
storage/local/storage_test.go
View file

@ -28,7 +28,7 @@ import (
"github.com/prometheus/prometheus/utility/test"
)
func TestGetFingerprintsForLabelMatchers(t *testing.T) {
func TestFingerprintsForLabelMatchers(t *testing.T) {
storage, closer := NewTestStorage(t, 1)
defer closer.Close()
@ -121,7 +121,7 @@ func TestGetFingerprintsForLabelMatchers(t *testing.T) {
}
for _, mt := range matcherTests {
resfps := storage.GetFingerprintsForLabelMatchers(mt.matchers)
resfps := storage.FingerprintsForLabelMatchers(mt.matchers)
if len(mt.expected) != len(resfps) {
t.Fatalf("expected %d matches for %q, found %d", len(mt.expected), mt.matchers, len(resfps))
}
@ -208,7 +208,7 @@ func testChunk(t *testing.T, encoding chunkEncoding) {
if cd.isEvicted() {
continue
}
for sample := range cd.chunk.values() {
for sample := range cd.c.newIterator().values() {
values = append(values, *sample)
}
}
@ -234,8 +234,8 @@ func TestChunkType1(t *testing.T) {
testChunk(t, 1)
}
func testGetValueAtTime(t *testing.T, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 1000)
func testValueAtTime(t *testing.T, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 10000)
for i := range samples {
samples[i] = &clientmodel.Sample{
Timestamp: clientmodel.Timestamp(2 * i),
@ -256,7 +256,7 @@ func testGetValueAtTime(t *testing.T, encoding chunkEncoding) {
// #1 Exactly on a sample.
for i, expected := range samples {
actual := it.GetValueAtTime(expected.Timestamp)
actual := it.ValueAtTime(expected.Timestamp)
if len(actual) != 1 {
t.Fatalf("1.%d. Expected exactly one result, got %d.", i, len(actual))
@ -275,7 +275,7 @@ func testGetValueAtTime(t *testing.T, encoding chunkEncoding) {
continue
}
expected2 := samples[i+1]
actual := it.GetValueAtTime(expected1.Timestamp + 1)
actual := it.ValueAtTime(expected1.Timestamp + 1)
if len(actual) != 2 {
t.Fatalf("2.%d. Expected exactly 2 results, got %d.", i, len(actual))
@ -296,7 +296,7 @@ func testGetValueAtTime(t *testing.T, encoding chunkEncoding) {
// #3 Corner cases: Just before the first sample, just after the last.
expected := samples[0]
actual := it.GetValueAtTime(expected.Timestamp - 1)
actual := it.ValueAtTime(expected.Timestamp - 1)
if len(actual) != 1 {
t.Fatalf("3.1. Expected exactly one result, got %d.", len(actual))
}
@ -307,7 +307,7 @@ func testGetValueAtTime(t *testing.T, encoding chunkEncoding) {
t.Errorf("3.1. Got %v; want %v", actual[0].Value, expected.Value)
}
expected = samples[len(samples)-1]
actual = it.GetValueAtTime(expected.Timestamp + 1)
actual = it.ValueAtTime(expected.Timestamp + 1)
if len(actual) != 1 {
t.Fatalf("3.2. Expected exactly one result, got %d.", len(actual))
}
@ -319,16 +319,89 @@ func testGetValueAtTime(t *testing.T, encoding chunkEncoding) {
}
}
func TestGetValueAtTimeChunkType0(t *testing.T) {
testGetValueAtTime(t, 0)
func TestValueAtTimeChunkType0(t *testing.T) {
testValueAtTime(t, 0)
}
func TestGetValueAtTimeChunkType1(t *testing.T) {
testGetValueAtTime(t, 1)
func TestValueAtTimeChunkType1(t *testing.T) {
testValueAtTime(t, 1)
}
func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 1000)
func benchmarkValueAtTime(b *testing.B, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 10000)
for i := range samples {
samples[i] = &clientmodel.Sample{
Timestamp: clientmodel.Timestamp(2 * i),
Value: clientmodel.SampleValue(float64(i) * 0.2),
}
}
s, closer := NewTestStorage(b, encoding)
defer closer.Close()
for _, sample := range samples {
s.Append(sample)
}
s.WaitForIndexing()
fp := clientmodel.Metric{}.FastFingerprint()
b.ResetTimer()
for i := 0; i < b.N; i++ {
it := s.NewIterator(fp)
// #1 Exactly on a sample.
for i, expected := range samples {
actual := it.ValueAtTime(expected.Timestamp)
if len(actual) != 1 {
b.Fatalf("1.%d. Expected exactly one result, got %d.", i, len(actual))
}
if expected.Timestamp != actual[0].Timestamp {
b.Errorf("1.%d. Got %v; want %v", i, actual[0].Timestamp, expected.Timestamp)
}
if expected.Value != actual[0].Value {
b.Errorf("1.%d. Got %v; want %v", i, actual[0].Value, expected.Value)
}
}
// #2 Between samples.
for i, expected1 := range samples {
if i == len(samples)-1 {
continue
}
expected2 := samples[i+1]
actual := it.ValueAtTime(expected1.Timestamp + 1)
if len(actual) != 2 {
b.Fatalf("2.%d. Expected exactly 2 results, got %d.", i, len(actual))
}
if expected1.Timestamp != actual[0].Timestamp {
b.Errorf("2.%d. Got %v; want %v", i, actual[0].Timestamp, expected1.Timestamp)
}
if expected1.Value != actual[0].Value {
b.Errorf("2.%d. Got %v; want %v", i, actual[0].Value, expected1.Value)
}
if expected2.Timestamp != actual[1].Timestamp {
b.Errorf("2.%d. Got %v; want %v", i, actual[1].Timestamp, expected1.Timestamp)
}
if expected2.Value != actual[1].Value {
b.Errorf("2.%d. Got %v; want %v", i, actual[1].Value, expected1.Value)
}
}
}
}
func BenchmarkValueAtTimeChunkType0(b *testing.B) {
benchmarkValueAtTime(b, 0)
}
func BenchmarkValueAtTimeChunkType1(b *testing.B) {
benchmarkValueAtTime(b, 1)
}
func testRangeValues(t *testing.T, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 10000)
for i := range samples {
samples[i] = &clientmodel.Sample{
Timestamp: clientmodel.Timestamp(2 * i),
@ -349,7 +422,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
// #1 Zero length interval at sample.
for i, expected := range samples {
actual := it.GetRangeValues(metric.Interval{
actual := it.RangeValues(metric.Interval{
OldestInclusive: expected.Timestamp,
NewestInclusive: expected.Timestamp,
})
@ -367,7 +440,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
// #2 Zero length interval off sample.
for i, expected := range samples {
actual := it.GetRangeValues(metric.Interval{
actual := it.RangeValues(metric.Interval{
OldestInclusive: expected.Timestamp + 1,
NewestInclusive: expected.Timestamp + 1,
})
@ -379,7 +452,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
// #3 2sec interval around sample.
for i, expected := range samples {
actual := it.GetRangeValues(metric.Interval{
actual := it.RangeValues(metric.Interval{
OldestInclusive: expected.Timestamp - 1,
NewestInclusive: expected.Timestamp + 1,
})
@ -401,7 +474,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
continue
}
expected2 := samples[i+1]
actual := it.GetRangeValues(metric.Interval{
actual := it.RangeValues(metric.Interval{
OldestInclusive: expected1.Timestamp,
NewestInclusive: expected1.Timestamp + 2,
})
@ -426,7 +499,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
// #5 corner cases: Interval ends at first sample, interval starts
// at last sample, interval entirely before/after samples.
expected := samples[0]
actual := it.GetRangeValues(metric.Interval{
actual := it.RangeValues(metric.Interval{
OldestInclusive: expected.Timestamp - 2,
NewestInclusive: expected.Timestamp,
})
@ -440,7 +513,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
t.Errorf("5.1. Got %v; want %v.", actual[0].Value, expected.Value)
}
expected = samples[len(samples)-1]
actual = it.GetRangeValues(metric.Interval{
actual = it.RangeValues(metric.Interval{
OldestInclusive: expected.Timestamp,
NewestInclusive: expected.Timestamp + 2,
})
@ -454,7 +527,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
t.Errorf("5.2. Got %v; want %v.", actual[0].Value, expected.Value)
}
firstSample := samples[0]
actual = it.GetRangeValues(metric.Interval{
actual = it.RangeValues(metric.Interval{
OldestInclusive: firstSample.Timestamp - 4,
NewestInclusive: firstSample.Timestamp - 2,
})
@ -462,7 +535,7 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
t.Fatalf("5.3. Expected no results, got %d.", len(actual))
}
lastSample := samples[len(samples)-1]
actual = it.GetRangeValues(metric.Interval{
actual = it.RangeValues(metric.Interval{
OldestInclusive: lastSample.Timestamp + 2,
NewestInclusive: lastSample.Timestamp + 4,
})
@ -471,16 +544,61 @@ func testGetRangeValues(t *testing.T, encoding chunkEncoding) {
}
}
func TestGetRangeValuesChunkType0(t *testing.T) {
testGetRangeValues(t, 0)
func TestRangeValuesChunkType0(t *testing.T) {
testRangeValues(t, 0)
}
func TestGetRangeValuesChunkType1(t *testing.T) {
testGetRangeValues(t, 1)
func TestRangeValuesChunkType1(t *testing.T) {
testRangeValues(t, 1)
}
func benchmarkRangeValues(b *testing.B, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 10000)
for i := range samples {
samples[i] = &clientmodel.Sample{
Timestamp: clientmodel.Timestamp(2 * i),
Value: clientmodel.SampleValue(float64(i) * 0.2),
}
}
s, closer := NewTestStorage(b, encoding)
defer closer.Close()
for _, sample := range samples {
s.Append(sample)
}
s.WaitForIndexing()
fp := clientmodel.Metric{}.FastFingerprint()
b.ResetTimer()
for i := 0; i < b.N; i++ {
it := s.NewIterator(fp)
for _, sample := range samples {
actual := it.RangeValues(metric.Interval{
OldestInclusive: sample.Timestamp - 20,
NewestInclusive: sample.Timestamp + 20,
})
if len(actual) < 10 {
b.Fatalf("not enough samples found")
}
}
}
}
func BenchmarkRangeValuesChunkType0(b *testing.B) {
benchmarkRangeValues(b, 0)
}
func BenchmarkRangeValuesChunkType1(b *testing.B) {
benchmarkRangeValues(b, 1)
}
func testEvictAndPurgeSeries(t *testing.T, encoding chunkEncoding) {
samples := make(clientmodel.Samples, 1000)
samples := make(clientmodel.Samples, 10000)
for i := range samples {
samples[i] = &clientmodel.Sample{
Timestamp: clientmodel.Timestamp(2 * i),
@ -498,29 +616,29 @@ func testEvictAndPurgeSeries(t *testing.T, encoding chunkEncoding) {
fp := clientmodel.Metric{}.FastFingerprint()
// Drop ~half of the chunks.
s.maintainMemorySeries(fp, 1000)
s.maintainMemorySeries(fp, 10000)
it := s.NewIterator(fp)
actual := it.GetBoundaryValues(metric.Interval{
actual := it.BoundaryValues(metric.Interval{
OldestInclusive: 0,
NewestInclusive: 10000,
NewestInclusive: 100000,
})
if len(actual) != 2 {
t.Fatal("expected two results after purging half of series")
}
if actual[0].Timestamp < 600 || actual[0].Timestamp > 1000 {
if actual[0].Timestamp < 6000 || actual[0].Timestamp > 10000 {
t.Errorf("1st timestamp out of expected range: %v", actual[0].Timestamp)
}
want := clientmodel.Timestamp(1998)
want := clientmodel.Timestamp(19998)
if actual[1].Timestamp != want {
t.Errorf("2nd timestamp: want %v, got %v", want, actual[1].Timestamp)
}
// Drop everything.
s.maintainMemorySeries(fp, 10000)
s.maintainMemorySeries(fp, 100000)
it = s.NewIterator(fp)
actual = it.GetBoundaryValues(metric.Interval{
actual = it.BoundaryValues(metric.Interval{
OldestInclusive: 0,
NewestInclusive: 10000,
NewestInclusive: 100000,
})
if len(actual) != 0 {
t.Fatal("expected zero results after purging the whole series")
@ -558,7 +676,7 @@ func testEvictAndPurgeSeries(t *testing.T, encoding chunkEncoding) {
}
// Drop ~half of the chunks of an archived series.
s.maintainArchivedSeries(fp, 1000)
s.maintainArchivedSeries(fp, 10000)
archived, _, _, err = s.persistence.hasArchivedMetric(fp)
if err != nil {
t.Fatal(err)
@ -568,7 +686,7 @@ func testEvictAndPurgeSeries(t *testing.T, encoding chunkEncoding) {
}
// Drop everything.
s.maintainArchivedSeries(fp, 10000)
s.maintainArchivedSeries(fp, 100000)
archived, _, _, err = s.persistence.hasArchivedMetric(fp)
if err != nil {
t.Fatal(err)
@ -625,7 +743,7 @@ func testEvictAndPurgeSeries(t *testing.T, encoding chunkEncoding) {
// This will archive again, but must not drop it completely, despite the
// memorySeries being empty.
s.maintainMemorySeries(fp, 1000)
s.maintainMemorySeries(fp, 10000)
archived, _, _, err = s.persistence.hasArchivedMetric(fp)
if err != nil {
t.Fatal(err)
@ -685,7 +803,7 @@ func testFuzz(t *testing.T, encoding chunkEncoding) {
s, c := NewTestStorage(t, encoding)
defer c.Close()
samples := createRandomSamples("test_fuzz", 1000)
samples := createRandomSamples("test_fuzz", 10000)
for _, sample := range samples {
s.Append(sample)
}
@ -917,7 +1035,7 @@ func verifyStorage(t testing.TB, s *memorySeriesStorage, samples clientmodel.Sam
}
p := s.NewPreloader()
p.PreloadRange(fp, sample.Timestamp, sample.Timestamp, time.Hour)
found := s.NewIterator(fp).GetValueAtTime(sample.Timestamp)
found := s.NewIterator(fp).ValueAtTime(sample.Timestamp)
if len(found) != 1 {
t.Errorf("Sample %#v: Expected exactly one value, found %d.", sample, len(found))
result = false

2
web/api/query.go
View file

@ -156,7 +156,7 @@ func (serv MetricsService) Metrics(w http.ResponseWriter, r *http.Request) {
setAccessControlHeaders(w)
w.Header().Set("Content-Type", "application/json")
metricNames := serv.Storage.GetLabelValuesForLabelName(clientmodel.MetricNameLabel)
metricNames := serv.Storage.LabelValuesForLabelName(clientmodel.MetricNameLabel)
sort.Sort(metricNames)
resultBytes, err := json.Marshal(metricNames)
if err != nil {