forked from cisco/senml
/
senmlCat.go
183 lines (160 loc) · 4.37 KB
/
senmlCat.go
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package main
import (
"bufio"
"bytes"
"flag"
"fmt"
"github.com/cisco/senml"
"io/ioutil"
"net/http"
"os"
"runtime/pprof"
"errors"
)
var doIndentPtr = flag.Bool("i", false, "indent output")
var doPrintPtr = flag.Bool("print", false, "print output to stdout")
var doResolvePtr = flag.Bool("resolve", false, "resolve SenML records")
var postUrl = flag.String("post", "", "URL to HTTP POST output to")
var topic = flag.String("topic", "senml", "Apache Kafka topic or InfluxDB series name ")
var doJsonPtr = flag.Bool("json", false, "output JSON formatted SenML ")
var doCborPtr = flag.Bool("cbor", false, "output CBOR formatted SenML ")
var doXmlPtr = flag.Bool("xml", false, "output XML formatted SenML ")
var doCsvPtr = flag.Bool("csv", false, "output CSV formatted SenML ")
var doMpackPtr = flag.Bool("mpack", false, "output MessagePack formatted SenML ")
var doLinpPtr = flag.Bool("linp", false, "output InfluxDB LineProtcol formatted SenML ")
var doJsonLinePtr = flag.Bool("jsonl", false, "outpute JSON formatted SenML Record lines")
var doIJsonStreamPtr = flag.Bool("ijson", false, "input JSON formatted SenML")
var doIJsonLinePtr = flag.Bool("ijsonl", false, "input JSON formatted SenML Record lines")
var doIXmlPtr = flag.Bool("ixml", false, "input XML formatted SenML ")
var doICborPtr = flag.Bool("icbor", false, "input CBOR formatted SenML ")
var doIMpackPtr = flag.Bool("impack", false, "input MessagePack formatted SenML ")
func decodeTimed(msg []byte) (senml.SenML, error) {
var s senml.SenML
var err error
var format senml.Format = senml.JSON
switch {
case *doIJsonStreamPtr:
format = senml.JSON
case *doIJsonLinePtr:
format = senml.JSONLINE
case *doICborPtr:
format = senml.CBOR
case *doIXmlPtr:
format = senml.XML
case *doIMpackPtr:
format = senml.MPACK
}
s, err = senml.Decode(msg, format)
return s, err
}
func outputData(data []byte) error {
if *doPrintPtr {
fmt.Print(string(data))
}
if len(*postUrl) != 0 {
fmt.Println("PostURL=<" + string(*postUrl) + ">")
buffer := bytes.NewBuffer(data)
resp, err := http.Post(string(*postUrl), "application/senml+json", buffer)
if err != nil {
fmt.Println("Post to", string(*postUrl), " got error", err.Error())
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if resp.StatusCode != 204 {
fmt.Println("Post got status " , resp.Status )
fmt.Println("Post got", string(body) )
return errors.New("WebServer returned: " + string(body) )
}
}
return nil
}
func processData(dataIn []byte) error {
var s senml.SenML
var err error
s, err = decodeTimed(dataIn)
if err != nil {
fmt.Println("Decode of SenML failed")
return err
}
//fmt.Println( "Senml:", senml.Records )
if *doResolvePtr {
s = senml.Normalize(s)
}
var dataOut []byte
options := senml.OutputOptions{}
if *doIndentPtr {
options.PrettyPrint = *doIndentPtr
}
options.Topic = string(*topic)
var format senml.Format = senml.JSON
switch {
case *doJsonPtr:
format = senml.JSON
case *doJsonLinePtr:
format = senml.JSONLINE
case *doCborPtr:
format = senml.CBOR
case *doXmlPtr:
format = senml.XML
case *doCsvPtr:
format = senml.CSV
case *doMpackPtr:
format = senml.MPACK
case *doLinpPtr:
format = senml.LINEP
}
dataOut, err = senml.Encode(s, format, options)
if err != nil {
fmt.Println("Encode of SenML failed")
return err
}
if false {
reader := bytes.NewReader(dataOut)
lines := bufio.NewScanner(reader)
for lines.Scan() {
err = outputData( []byte( lines.Text() ) )
if err != nil {
fmt.Println("Output of SenML failed:", err)
return err
}
}
err = lines.Err();
if err != nil {
fmt.Println("Encode scanning lines in output")
}
} else {
err = outputData( dataOut )
if err != nil {
fmt.Println("Output of SenML failed:", err)
return err
}
}
return nil
}
func main() {
var err error
if false {
f, err := os.Create( "senmlCat.prof" )
if err != nil {
fmt.Println("error opening profile file", err)
os.Exit(1)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
flag.Parse()
//fmt.Print("Reading file ...")
// load the input
msg, err := ioutil.ReadFile(flag.Arg(0))
if err != nil {
fmt.Println("error reading SenML file", err)
os.Exit(1)
}
//fmt.Println("Done")
err = processData(msg)
if err != nil {
fmt.Println("error processing SenML file", err)
os.Exit(1)
}
}