github.com/siglens/siglens@v0.0.0-20240328180423-f7ce9ae441ed/pkg/readerUtils/queryUtils.go (about)

     1  /*
     2  Copyright 2023.
     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  
    17  package readerUtils
    18  
    19  import (
    20  	"sync"
    21  	"sync/atomic"
    22  
    23  	dtu "github.com/siglens/siglens/pkg/common/dtypeutils"
    24  	"github.com/siglens/siglens/pkg/utils"
    25  )
    26  
    27  var globalQid uint64 = 0
    28  var qidLock sync.Mutex
    29  
    30  const DefaultBucketCount uint64 = 10
    31  const DefaultMetaLookbackMins = 129600 //90 days
    32  
    33  func GetNextQid() uint64 {
    34  	qidLock.Lock()
    35  	defer qidLock.Unlock() // prevents two queries from returning the same GlobalQid (small chance w/o locks)
    36  	atomic.AddUint64(&globalQid, 1)
    37  	return globalQid
    38  }
    39  
    40  func GetESDefaultQueryTimeRange() *dtu.TimeRange {
    41  	currTime := utils.GetCurrentTimeInMs()
    42  	lookbackInMilliSec := 60000 * uint64(DefaultMetaLookbackMins)
    43  	return &dtu.TimeRange{
    44  		StartEpochMs: (currTime - lookbackInMilliSec),
    45  		EndEpochMs:   currTime,
    46  	}
    47  }