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collectd.go
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collectd.go
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package decoders
import (
"strconv"
"sync"
"time"
"collectd.org/api"
"collectd.org/network"
"github.com/rakyll/statik/fs"
"github.com/stephane-martin/skewer/model"
// import the statik store
_ "github.com/stephane-martin/skewer/utils/collectd/embed/statik"
)
var typesDB *api.TypesDB
var once sync.Once
func pCollectd(m []byte) (msgs []*model.SyslogMessage, rerr error) {
once.Do(func() {
statikFS, err := fs.New()
if err != nil {
panic(err)
}
typesReader, err := statikFS.Open("/types.db")
if err != nil {
panic(err)
}
typesDB, err = api.NewTypesDB(typesReader)
if err != nil {
panic(err)
}
})
opts := network.ParseOpts{
TypesDB: typesDB,
}
lists, err := network.Parse(m, opts)
if err != nil {
return nil, DecodingError(err)
}
var list *api.ValueList
var values []api.Value
var value api.Value
var name string
var j int
var gauge api.Gauge
var derive api.Derive
var ok bool
msgs = make([]*model.SyslogMessage, 10)
var b []byte
for _, list = range lists {
msg := model.Factory()
b, err = list.MarshalJSON()
if err != nil {
continue
}
msg.Message = string(b)
msg.TimeReportedNum = list.Time.UnixNano()
msg.TimeGeneratedNum = time.Now().UnixNano()
msg.Severity = model.Sinfo
msg.Facility = model.Fuser
msg.SetPriority()
msg.HostName = list.Identifier.Host
msg.AppName = "collectd"
msg.MsgId = ""
msg.ProcId = list.Identifier.Plugin
msg.Structured = ""
msg.Version = 1
msg.ClearDomain("collectd")
if len(list.Identifier.PluginInstance) > 0 {
msg.SetProperty("collectd", "plugin_instance", list.Identifier.PluginInstance)
}
if len(list.Identifier.Type) > 0 {
msg.SetProperty("collectd", "type", list.Identifier.Type)
}
if len(list.Identifier.TypeInstance) > 0 {
msg.SetProperty("collectd", "type_instance", list.Identifier.TypeInstance)
}
values = list.Values
for j = range values {
value = values[j]
name = list.DSName(j)
if gauge, ok = value.(api.Gauge); ok {
msg.SetProperty("gauge", name, strconv.FormatFloat(float64(gauge), 'f', 3, 64))
} else if derive, ok = value.(api.Derive); ok {
msg.SetProperty("derive", name, strconv.FormatInt(int64(derive), 10))
}
}
msgs = append(msgs, msg)
}
return msgs, nil
}