github.com/matrixorigin/matrixone@v0.7.0/pkg/hakeeper/config.go (about)

     1  // Copyright 2021 - 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package hakeeper
    16  
    17  import (
    18  	"time"
    19  )
    20  
    21  const (
    22  	DefaultTickPerSecond   = 10
    23  	DefaultLogStoreTimeout = 5 * time.Minute
    24  	DefaultDNStoreTimeout  = 10 * time.Second
    25  	DefaultCNStoreTimeout  = 30 * time.Second
    26  )
    27  
    28  type Config struct {
    29  	// TickPerSecond indicates how many ticks every second.
    30  	// In HAKeeper, we do not use actual time to measure time elapse.
    31  	// Instead, we use ticks.
    32  	TickPerSecond int
    33  
    34  	// LogStoreTimeout is the actual time limit between a log store's heartbeat.
    35  	// If HAKeeper does not receive two heartbeat within LogStoreTimeout,
    36  	// it regards the log store as down.
    37  	LogStoreTimeout time.Duration
    38  
    39  	// DNStoreTimeout is the actual time limit between a dn store's heartbeat.
    40  	// If HAKeeper does not receive two heartbeat within DNStoreTimeout,
    41  	// it regards the dn store as down.
    42  	DNStoreTimeout time.Duration
    43  
    44  	// CNStoreTimeout is the actual time limit between a cn store's heartbeat.
    45  	// If HAKeeper does not receive two heartbeat within CNStoreTimeout,
    46  	// it regards the dn store as down.
    47  	CNStoreTimeout time.Duration
    48  }
    49  
    50  func (cfg Config) Validate() error {
    51  	return nil
    52  }
    53  
    54  func (cfg *Config) Fill() {
    55  	if cfg.TickPerSecond == 0 {
    56  		cfg.TickPerSecond = DefaultTickPerSecond
    57  	}
    58  	if cfg.LogStoreTimeout == 0 {
    59  		cfg.LogStoreTimeout = DefaultLogStoreTimeout
    60  	}
    61  	if cfg.DNStoreTimeout == 0 {
    62  		cfg.DNStoreTimeout = DefaultDNStoreTimeout
    63  	}
    64  	if cfg.CNStoreTimeout == 0 {
    65  		cfg.CNStoreTimeout = DefaultCNStoreTimeout
    66  	}
    67  }
    68  
    69  func (cfg Config) LogStoreExpired(start, current uint64) bool {
    70  	return uint64(int(cfg.LogStoreTimeout/time.Second)*cfg.TickPerSecond)+start < current
    71  }
    72  
    73  func (cfg Config) DNStoreExpired(start, current uint64) bool {
    74  	return uint64(int(cfg.DNStoreTimeout/time.Second)*cfg.TickPerSecond)+start < current
    75  }
    76  
    77  func (cfg Config) CNStoreExpired(start, current uint64) bool {
    78  	return uint64(int(cfg.CNStoreTimeout/time.Second)*cfg.TickPerSecond)+start < current
    79  }
    80  
    81  func (cfg Config) ExpiredTick(start uint64, timeout time.Duration) uint64 {
    82  	return uint64(timeout/time.Second)*uint64(cfg.TickPerSecond) + start
    83  }