// TODO: handle "no such file"
func (input *S3SplitFileInput) readS3File(runner pipeline.InputRunner, d *pipeline.Deliverer, sr *pipeline.SplitterRunner, s3Key string) (err error) {
runner.LogMessage(fmt.Sprintf("Preparing to read: %s", s3Key))
if input.bucket == nil {
runner.LogMessage(fmt.Sprintf("Dude, where's my bucket: %s", s3Key))
return
}
var lastGoodOffset uint64
var attempt uint32
RetryS3:
for attempt = 1; attempt <= input.S3Retries; attempt++ {
for r := range S3FileIterator(input.bucket, s3Key, lastGoodOffset) {
record := r.Record
err := r.Err
if err != nil && err != io.EOF {
runner.LogError(fmt.Errorf("Error in attempt %d reading %s at offset %d: %s", attempt, s3Key, lastGoodOffset, err))
atomic.AddInt64(&input.processMessageFailures, 1)
continue RetryS3
}
if len(record) > 0 {
lastGoodOffset += uint64(r.BytesRead)
atomic.AddInt64(&input.processMessageCount, 1)
atomic.AddInt64(&input.processMessageBytes, int64(len(record)))
(*sr).DeliverRecord(record, *d)
}
}
break
}
return
}
func (rpsi *RedisPubSubInput) Run(ir pipeline.InputRunner, h pipeline.PluginHelper) error {
var (
dRunner pipeline.DecoderRunner
decoder pipeline.Decoder
pack *pipeline.PipelinePack
e error
ok bool
)
// Get the InputRunner's chan to receive empty PipelinePacks
packSupply := ir.InChan()
if rpsi.conf.DecoderName != "" {
if dRunner, ok = h.DecoderRunner(rpsi.conf.DecoderName, fmt.Sprintf("%s-%s", ir.Name(), rpsi.conf.DecoderName)); !ok {
return fmt.Errorf("Decoder not found: %s", rpsi.conf.DecoderName)
}
decoder = dRunner.Decoder()
}
//Connect to the channel
psc := redis.PubSubConn{Conn: rpsi.conn}
psc.PSubscribe(rpsi.conf.Channel)
for {
switch n := psc.Receive().(type) {
case redis.PMessage:
// Grab an empty PipelinePack from the InputRunner
pack = <-packSupply
pack.Message.SetType("redis_pub_sub")
pack.Message.SetLogger(n.Channel)
pack.Message.SetPayload(string(n.Data))
pack.Message.SetTimestamp(time.Now().UnixNano())
var packs []*pipeline.PipelinePack
if decoder == nil {
packs = []*pipeline.PipelinePack{pack}
} else {
packs, e = decoder.Decode(pack)
}
if packs != nil {
for _, p := range packs {
ir.Inject(p)
}
} else {
if e != nil {
ir.LogError(fmt.Errorf("Couldn't parse Redis message: %s", n.Data))
}
pack.Recycle(nil)
}
case redis.Subscription:
ir.LogMessage(fmt.Sprintf("Subscription: %s %s %d\n", n.Kind, n.Channel, n.Count))
if n.Count == 0 {
return errors.New("No channel to subscribe")
}
case error:
fmt.Printf("error: %v\n", n)
return n
}
}
return nil
}
func (s *SandboxInput) Run(ir pipeline.InputRunner, h pipeline.PluginHelper) (err error) {
s.sb.InjectMessage(func(payload, payload_type, payload_name string) int {
pack := <-ir.InChan()
if err := proto.Unmarshal([]byte(payload), pack.Message); err != nil {
pack.Recycle()
return 1
}
if s.tz != time.UTC {
const layout = "2006-01-02T15:04:05.999999999" // remove the incorrect UTC tz info
t := time.Unix(0, pack.Message.GetTimestamp())
t = t.In(time.UTC)
ct, _ := time.ParseInLocation(layout, t.Format(layout), s.tz)
pack.Message.SetTimestamp(ct.UnixNano())
}
ir.Inject(pack)
atomic.AddInt64(&s.processMessageCount, 1)
atomic.AddInt64(&s.processMessageBytes, int64(len(payload)))
return 0
})
ticker := ir.Ticker()
for true {
retval := s.sb.ProcessMessage(nil)
if retval <= 0 { // Sandbox is in polling mode
if retval < 0 {
atomic.AddInt64(&s.processMessageFailures, 1)
em := s.sb.LastError()
if len(em) > 0 {
ir.LogError(errors.New(em))
}
}
if ticker == nil {
ir.LogMessage("single run completed")
break
}
select { // block until stop or poll interval
case <-s.stopChan:
case <-ticker:
}
} else { // Sandbox is shutting down
em := s.sb.LastError()
if !strings.HasSuffix(em, "shutting down") {
ir.LogError(errors.New(em))
}
break
}
}
s.reportLock.Lock()
if s.sbc.PreserveData {
err = s.sb.Destroy(s.preservationFile)
} else {
err = s.sb.Destroy("")
}
s.sb = nil
s.reportLock.Unlock()
return
}
func (input *S3SplitFileInput) Run(runner pipeline.InputRunner, helper pipeline.PluginHelper) error {
// Begin listing the files (either straight from S3 or from a cache)
// Write matching filenames on a "lister" channel
// Read from the lister channel:
// - fetch the filename
// - read records from it
// - write them to a "reader" channel
var (
wg sync.WaitGroup
i uint32
)
wg.Add(1)
go func() {
runner.LogMessage("Starting S3 list")
iteratorLoop:
for r := range S3Iterator(input.bucket, input.S3BucketPrefix, input.schema) {
select {
case <-input.stop:
runner.LogMessage("Stopping S3 list")
break iteratorLoop
default:
}
if r.Err != nil {
runner.LogError(fmt.Errorf("Error getting S3 list: %s", r.Err))
} else {
basename := r.Key.Key[strings.LastIndex(r.Key.Key, "/")+1:]
if input.objectMatch == nil || input.objectMatch.MatchString(basename) {
runner.LogMessage(fmt.Sprintf("Found: %s", r.Key.Key))
input.listChan <- r.Key.Key
} else {
runner.LogMessage(fmt.Sprintf("Skipping: %s", r.Key.Key))
}
}
}
// All done listing, close the channel
runner.LogMessage("All done listing. Closing channel")
close(input.listChan)
wg.Done()
}()
// Run a pool of concurrent readers.
for i = 0; i < input.S3WorkerCount; i++ {
wg.Add(1)
go input.fetcher(runner, &wg, i)
}
wg.Wait()
return nil
}
func (input *S3SplitFileInput) fetcher(runner pipeline.InputRunner, wg *sync.WaitGroup, workerId uint32) {
var (
s3Key string
startTime time.Time
duration float64
)
fetcherName := fmt.Sprintf("S3Reader%d", workerId)
deliverer := runner.NewDeliverer(fetcherName)
defer deliverer.Done()
splitterRunner := runner.NewSplitterRunner(fetcherName)
ok := true
for ok {
select {
case s3Key, ok = <-input.listChan:
if !ok {
// Channel is closed => we're shutting down, exit cleanly.
// runner.LogMessage("Fetcher all done! shutting down.")
break
}
startTime = time.Now().UTC()
err := input.readS3File(runner, &deliverer, &splitterRunner, s3Key)
atomic.AddInt64(&input.processFileCount, 1)
leftovers := splitterRunner.GetRemainingData()
lenLeftovers := len(leftovers)
if lenLeftovers > 0 {
atomic.AddInt64(&input.processFileDiscardedBytes, int64(lenLeftovers))
runner.LogError(fmt.Errorf("Trailing data, possible corruption: %d bytes left in stream at EOF: %s", lenLeftovers, s3Key))
}
if err != nil && err != io.EOF {
runner.LogError(fmt.Errorf("Error reading %s: %s", s3Key, err))
atomic.AddInt64(&input.processFileFailures, 1)
continue
}
duration = time.Now().UTC().Sub(startTime).Seconds()
runner.LogMessage(fmt.Sprintf("Successfully fetched %s in %.2fs ", s3Key, duration))
case <-input.stop:
for _ = range input.listChan {
// Drain the channel without processing the files.
// Technically the S3Iterator can still add one back on to the
// channel but this ensures there is room so it won't block.
}
ok = false
}
}
wg.Done()
}
func (input *S3OffsetInput) fetcher(runner pipeline.InputRunner, wg *sync.WaitGroup, workerId uint32) {
var (
loc MessageLocation
startTime time.Time
duration float64
headers map[string][]string
record []byte
err error
)
headers = map[string][]string{
"Range": []string{""},
}
fetcherName := fmt.Sprintf("S3Reader%d", workerId)
deliverer := runner.NewDeliverer(fetcherName)
defer deliverer.Done()
splitterRunner := runner.NewSplitterRunner(fetcherName)
ok := true
for ok {
select {
case loc, ok = <-input.offsetChan:
if !ok {
// Channel is closed => we're shutting down, exit cleanly.
runner.LogMessage("Fetcher all done! shutting down.")
break
}
startTime = time.Now().UTC()
// Read one message from the given location
headers["Range"][0] = fmt.Sprintf("bytes=%d-%d", loc.Offset, loc.Offset+loc.Length-1)
atomic.AddInt64(&input.processMessageCount, 1)
atomic.AddInt64(&input.processMessageBytes, int64(loc.Length))
for attempt := uint32(1); attempt <= input.S3Retries; attempt++ {
record, err = getClientRecord(input.bucket, &loc, headers)
if err != nil {
runner.LogMessage(fmt.Sprintf("Error #%d fetching %s @ %d+%d: %s\n", attempt, loc.Key, loc.Offset, loc.Length, err))
} else {
break
}
}
if err != nil {
atomic.AddInt64(&input.processMessageFailures, 1)
continue
}
splitterRunner.DeliverRecord(record, deliverer)
duration = time.Now().UTC().Sub(startTime).Seconds()
runner.LogMessage(fmt.Sprintf("Successfully fetched %s in %.2fs ", loc.Key, duration))
case <-input.stop:
runner.LogMessage("Stopping fetcher...")
for _ = range input.offsetChan {
// Drain the channel without processing anything.
}
ok = false
}
}
wg.Done()
}
func (input *S3OffsetInput) Run(runner pipeline.InputRunner, helper pipeline.PluginHelper) error {
// List offset metadata index files
// For each index D >= start and <= end
// Read index D
// Write offsets for any desired clients to offsetChan
// Meanwhile, for each item in offsetChan
// Go fetch that record, inject resulting message into pipeline.
var (
wg sync.WaitGroup
i uint32
emptySchema Schema
)
if input.metaFileName != "" {
wg.Add(1)
go func() {
reader, err := os.Open(input.metaFileName)
if err != nil {
runner.LogMessage(fmt.Sprintf("Error opening metadata file '%s': %s", input.metaFileName, err))
}
defer reader.Close()
err = input.parseMessageLocations(reader, input.metaFileName)
if err != nil {
runner.LogMessage(fmt.Sprintf("Error reading metadata: %s", err))
}
// All done with metadata, close the channel
runner.LogMessage("All done with metadata. Closing channel")
close(input.offsetChan)
wg.Done()
}()
} else if input.metaBucket != nil {
wg.Add(1)
go func() {
runner.LogMessage("Starting S3 list")
iteratorLoop:
for r := range S3Iterator(input.metaBucket, input.S3MetaBucketPrefix, emptySchema) {
select {
case <-input.stop:
runner.LogMessage("Stopping S3 list")
break iteratorLoop
default:
}
if r.Err != nil {
runner.LogError(fmt.Errorf("Error getting S3 list: %s", r.Err))
} else {
base := path.Base(r.Key.Key)[0:8]
// Check if r is in the desired date range.
if base >= input.StartDate && base <= input.EndDate {
err := input.grep(r)
if err != nil {
runner.LogMessage(fmt.Sprintf("Error reading index: %s", err))
}
}
}
}
// All done listing, close the channel
runner.LogMessage("All done listing. Closing channel")
close(input.offsetChan)
wg.Done()
}()
} else {
runner.LogMessage("Nothing to do, no metadata available. Closing channel")
close(input.offsetChan)
wg.Done()
}
// Run a pool of concurrent readers.
for i = 0; i < input.S3WorkerCount; i++ {
wg.Add(1)
go input.fetcher(runner, &wg, i)
}
wg.Wait()
return nil
}