// Reduce
func (this *FileWorker) Reduce(key interface{}, values []interface{}) (kv mr.KeyValue) {
const threhold = 0
var occurence = stats.StatsSum(mr.ConvertAnySliceToFloat(values))
if occurence > threhold {
kv = mr.NewKeyValue()
kv[NIL_KEY] = occurence
}
return
}
func (this *AmfWorker) Map(line string, out chan<- mr.KeyValue) {
req := new(amfRequest)
req.parseLine(line)
kv := mr.NewKeyValue()
key := mr.NewKey(req.class, req.method, req.uri)
kv[key] = 1
kv.Emit(out)
}
func (this *UniWorker) Reduce(key interface{}, values []interface{}) (kv mr.KeyValue) {
// here we don't care about the key
// we only care about values
aggregate := stats.StatsSum(mr.ConvertAnySliceToFloat(values))
if aggregate > 100 {
kv = mr.NewKeyValue()
kv[NIL_KEY] = aggregate
}
return
}
func (this *UniWorker) Map(line string, out chan<- mr.KeyValue) {
line = line[:len(line)-1]
line = strings.Replace(line, "+", " ", 2)
kv := mr.NewKeyValue()
rs := re.ReplaceAll([]byte(line), []byte{})
line = string(rs)
line = trimAllRune(line, []rune{'>', '~', ';', '.', '-', '*'})
words := strings.Split(line, " ")
for _, w := range words {
line = strings.Trim(line, " ")
k := mr.NewKey(w)
kv[k] = 1
}
kv.Emit(out)
}
// Extract meta info related to amf from a valid line
func (this *FileWorker) Map(line string, out chan<- mr.KeyValue) {
kv := mr.NewKeyValue()
line = trimAllRune(line, []rune{'=', ':', '+', '.', '-'})
line = strings.Trim(line, " ")
if len(line) == 0 {
return
}
terms := strings.Split(line, " ")
for i, term := range terms {
for j := i + 1; j < len(terms); j++ {
coOccurence := mr.NewKey(strings.TrimSpace(term), strings.TrimSpace(terms[j]))
kv[coOccurence] = 1
}
}
kv.Emit(out)
}
func (this *KxiWorker) Map(line string, out chan<- mr.KeyValue) {
var streamResult StreamResult
if streamResult = this.Worker.streamedResult(line); streamResult.Empty() {
return
}
type record struct {
Url string `json:"u"`
Rid string `json:"i"`
Service string `json:"s"`
Time float64 `json:"t"`
Sql string `json:"q"`
}
rec := new(record)
if err := streamResult.Decode(rec); err != nil {
panic(err)
}
if this.manager.option.debug {
fmt.Fprintf(os.Stderr, "DEBUG<= %s %s %s %f %s\n",
rec.Url, rec.Rid, rec.Service, rec.Time, rec.Sql)
}
kv := mr.NewKeyValue()
kg1 := mr.NewGroupKey(GROUP_URL_SERV, rec.Url, rec.Service)
kg2 := mr.NewGroupKey(GROUP_URL_RID, rec.Url, rec.Rid)
kg3 := mr.NewGroupKey(GROUP_KXI, rec.Service)
kv[kg1] = rec.Time
kv[kg2] = rec.Time
kv[kg3] = rec.Time
if rec.Sql != "" {
kg4 := mr.NewGroupKey(GROUP_URL_SQL, rec.Url, rec.Sql)
kv[kg4] = rec.Time
}
kg5 := mr.NewGroupKey(GROUP_URL, rec.Url)
kv[kg5] = rec.Rid // key is url, val is rid(string)
kv.Emit(out)
}
// The key is already sorted
func (this *KxiWorker) Reduce(key interface{}, values []interface{}) (kv mr.KeyValue) {
kv = mr.NewKeyValue()
switch key.(mr.GroupKey).Group() {
case GROUP_URL_SERV:
vals := mr.ConvertAnySliceToFloat(values)
kv[TIME_ALL] = stats.StatsSum(vals)
kv[TIME_MAX] = stats.StatsMax(vals)
kv[TIME_TOP] = stats.StatsSumTopN(vals, topsum)
kv[TIME_AVG] = stats.StatsMean(vals)
kv[TIME_STD] = stats.StatsSampleStandardDeviationCoefficient(vals)
kv[CALL_ALL] = float64(stats.StatsCount(vals))
case GROUP_KXI:
vals := mr.ConvertAnySliceToFloat(values)
kv[TIME_ALL] = stats.StatsSum(vals)
kv[TIME_MIN] = stats.StatsMin(vals)
kv[TIME_TOP] = stats.StatsSumTopN(vals, topsum)
kv[TIME_MAX] = stats.StatsMax(vals)
kv[TIME_AVG] = stats.StatsMean(vals)
kv[TIME_STD] = stats.StatsSampleStandardDeviationCoefficient(vals)
kv[CALL_ALL] = float64(stats.StatsCount(vals))
case GROUP_URL_RID:
vals := mr.ConvertAnySliceToFloat(values)
kv[CALL_ALL] = float64(stats.StatsCount(vals))
kv[TIME_ALL] = stats.StatsSum(vals)
case GROUP_URL_SQL:
vals := mr.ConvertAnySliceToFloat(values)
kv[CALL_ALL] = float64(stats.StatsCount(vals))
kv[TIME_MAX] = stats.StatsMax(vals)
kv[TIME_AVG] = stats.StatsMean(vals)
case GROUP_URL:
vals := mr.ConvertAnySliceToString(values) // rids of this url
c := stats.NewCounter(vals)
kv[REQ_ALL] = float64(len(c))
}
return
}
func (this *NoopWorker) Map(line string, out chan<- mr.KeyValue) {
out <- mr.NewKeyValue()
}