forked from grafana/carbon-relay-ng
/
plain.go
72 lines (59 loc) · 1.58 KB
/
plain.go
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package input
import (
"bufio"
"io"
"net"
"github.com/graphite-ng/carbon-relay-ng/badmetrics"
"github.com/graphite-ng/carbon-relay-ng/cfg"
"github.com/graphite-ng/carbon-relay-ng/table"
"github.com/graphite-ng/carbon-relay-ng/validate"
m20 "github.com/metrics20/go-metrics20/carbon20"
)
type Plain struct {
config cfg.Config
bad *badmetrics.BadMetrics
table *table.Table
}
func NewPlain(config cfg.Config, addr string, tbl *table.Table, badMetrics *badmetrics.BadMetrics) (net.Listener, error) {
plain := &Plain{config, badMetrics, tbl}
l, err := listen(addr, plain)
if err != nil {
return nil, err
}
return l, nil
}
func (p *Plain) Handle(c net.Conn) {
defer c.Close()
// TODO c.SetTimeout(60e9)
r := bufio.NewReaderSize(c, 4096)
for {
// Note that everything in this loop should proceed as fast as it can
// so we're not blocked and can keep processing
// so the validation, the pipeline initiated via table.Dispatch(), etc
// must never block.
// note that we don't support lines longer than 4096B. that seems very reasonable..
buf, _, err := r.ReadLine()
if err != nil {
if io.EOF != err {
log.Error(err.Error())
}
break
}
numIn.Inc(1)
key, val, ts, err := m20.ValidatePacket(buf, p.config.Validation_level_legacy.Level, p.config.Validation_level_m20.Level)
if err != nil {
p.bad.Add(key, buf, err)
numInvalid.Inc(1)
continue
}
if p.config.Validate_order {
err = validate.Ordered(key, ts)
if err != nil {
p.bad.Add(key, buf, err)
numOutOfOrder.Inc(1)
continue
}
}
p.table.Dispatch(buf, val, ts)
}
}