github.com/kiali/kiali@v1.84.0/tracing/jaeger/model/time.go (about)

     1  // Copyright (c) 2019 The Jaeger Authors.
     2  // Copyright (c) 2017 Uber Technologies, Inc.
     3  //
     4  // Licensed under the Apache License, Version 2.0 (the "License");
     5  // you may not use this file except in compliance with the License.
     6  // You may obtain a copy of the License at
     7  //
     8  // http://www.apache.org/licenses/LICENSE-2.0
     9  //
    10  // Unless required by applicable law or agreed to in writing, software
    11  // distributed under the License is distributed on an "AS IS" BASIS,
    12  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  // See the License for the specific language governing permissions and
    14  // limitations under the License.
    15  
    16  package model
    17  
    18  import (
    19  	"time"
    20  )
    21  
    22  // EpochMicrosecondsAsTime converts microseconds since epoch to time.Time value.
    23  func EpochMicrosecondsAsTime(ts uint64) time.Time {
    24  	seconds := ts / 1000000
    25  	nanos := 1000 * (ts % 1000000)
    26  	return time.Unix(int64(seconds), int64(nanos)).UTC()
    27  }
    28  
    29  // TimeAsEpochMicroseconds converts time.Time to microseconds since epoch,
    30  // which is the format the StartTime field is stored in the Span.
    31  func TimeAsEpochMicroseconds(t time.Time) uint64 {
    32  	return uint64(t.UnixNano() / 1000)
    33  }
    34  
    35  // MicrosecondsAsDuration converts duration in microseconds to time.Duration value.
    36  func MicrosecondsAsDuration(v uint64) time.Duration {
    37  	return time.Duration(v) * time.Microsecond
    38  }
    39  
    40  // DurationAsMicroseconds converts time.Duration to microseconds,
    41  // which is the format the Duration field is stored in the Span.
    42  func DurationAsMicroseconds(d time.Duration) uint64 {
    43  	return uint64(d.Nanoseconds() / 1000)
    44  }