forked from apache/mynewt-newtmgr
/
nmxutil.go
215 lines (170 loc) · 4.77 KB
/
nmxutil.go
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package nmxutil
import (
"fmt"
"math"
"math/rand"
"os"
"path"
"runtime"
"sync"
"sync/atomic"
"time"
log "github.com/sirupsen/logrus"
"github.com/ugorji/go/codec"
"mynewt.apache.org/newt/util"
)
const DURATION_FOREVER time.Duration = math.MaxInt64
var Debug bool
var OmpRes string = "/omgr"
var nextNmpSeq uint8
var nmpSeqBeenRead bool
var nextOicSeq uint8
var oicSeqBeenRead bool
var seqMutex sync.Mutex
var logFormatter = log.TextFormatter{
FullTimestamp: true,
TimestampFormat: "2006-01-02 15:04:05.999",
}
var ListenLog = &log.Logger{
Out: os.Stderr,
Formatter: &logFormatter,
Level: log.DebugLevel,
}
func SetLogLevel(level log.Level) {
log.SetLevel(level)
log.SetFormatter(&logFormatter)
ListenLog.Level = level
}
func Assert(cond bool) {
if Debug && !cond {
util.PrintStacks()
panic("Failed assertion")
}
}
func NextNmpSeq() uint8 {
seqMutex.Lock()
defer seqMutex.Unlock()
if !nmpSeqBeenRead {
nextNmpSeq = uint8(rand.Uint32())
nmpSeqBeenRead = true
}
val := nextNmpSeq
nextNmpSeq++
return val
}
func SeqToToken(seq uint8) []byte {
return []byte{seq}
}
func NextToken() []byte {
seqMutex.Lock()
defer seqMutex.Unlock()
if !oicSeqBeenRead {
nextOicSeq = uint8(rand.Uint32())
oicSeqBeenRead = true
}
token := SeqToToken(nextOicSeq)
nextOicSeq++
return token
}
func DecodeCborMap(cbor []byte) (map[string]interface{}, error) {
m := map[string]interface{}{}
dec := codec.NewDecoderBytes(cbor, new(codec.CborHandle))
if err := dec.Decode(&m); err != nil {
log.Debugf("Attempt to decode invalid cbor: %#v", cbor)
return nil, fmt.Errorf("failure decoding cbor; %s", err.Error())
}
return m, nil
}
func EncodeCborMap(value map[string]interface{}) ([]byte, error) {
b := []byte{}
enc := codec.NewEncoderBytes(&b, new(codec.CborHandle))
if err := enc.Encode(value); err != nil {
return nil, fmt.Errorf("failure encoding cbor; %s", err.Error())
}
return b, nil
}
func DecodeCbor(cbor []byte) (interface{}, error) {
var m interface{}
dec := codec.NewDecoderBytes(cbor, new(codec.CborHandle))
if err := dec.Decode(&m); err != nil {
log.Debugf("Attempt to decode invalid cbor: %#v", cbor)
return nil, fmt.Errorf("failure decoding cbor; %s", err.Error())
}
return m, nil
}
func EncodeCbor(value interface{}) ([]byte, error) {
b := []byte{}
enc := codec.NewEncoderBytes(&b, new(codec.CborHandle))
if err := enc.Encode(value); err != nil {
return nil, fmt.Errorf("failure encoding cbor; %s", err.Error())
}
return b, nil
}
func StopAndDrainTimer(timer *time.Timer) {
if !timer.Stop() {
<-timer.C
}
}
func Fragment(b []byte, mtu int) [][]byte {
frags := [][]byte{}
for off := 0; off < len(b); off += mtu {
fragEnd := off + mtu
if fragEnd > len(b) {
fragEnd = len(b)
}
frag := b[off:fragEnd]
frags = append(frags, frag)
}
return frags
}
var nextId uint32
func GetNextId() uint32 {
return atomic.AddUint32(&nextId, 1) - 1
}
func LogListener(parentLevel int, title string, extra string) {
_, file, line, _ := runtime.Caller(parentLevel)
file = path.Base(file)
ListenLog.Debugf("{%s} [%s:%d] %s", title, file, line, extra)
}
func LogAddNmpListener(parentLevel int, seq uint8) {
LogListener(parentLevel, "add-nmp-listener", fmt.Sprintf("seq=%d", seq))
}
func LogRemoveNmpListener(parentLevel int, seq uint8) {
LogListener(parentLevel, "remove-nmp-listener", fmt.Sprintf("seq=%d", seq))
}
func LogAddCoapListener(parentLevel int, desc string) {
LogListener(parentLevel, "add-oic-listener",
fmt.Sprintf("desc=%s", desc))
}
func LogRemoveCoapListener(parentLevel int, desc string) {
LogListener(parentLevel, "remove-oic-listener",
fmt.Sprintf("desc=%s", desc))
}
func LogAddListener(parentLevel int, key interface{}, id uint32,
name string) {
LogListener(parentLevel, "add-ble-listener",
fmt.Sprintf("[%d] %s: base=%+v", id, name, key))
}
func LogRemoveListener(parentLevel int, key interface{}, id uint32,
name string) {
LogListener(parentLevel, "remove-ble-listener",
fmt.Sprintf("[%d] %s: base=%+v", id, name, key))
}