github.com/matrixorigin/matrixone@v1.2.0/pkg/incrservice/cfg.go (about)

     1  // Copyright 2023 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 incrservice
    16  
    17  const (
    18  	defaultCountPerAllocate = 10000
    19  )
    20  
    21  // Config auto increment config
    22  type Config struct {
    23  	// CountPerAllocate how many ids are cached in the current cn node for each assignment
    24  	CountPerAllocate int `toml:"count-per-allocate"`
    25  	// LowCapacity when the remaining number of ids is less than this value, the current cn
    26  	// node will initiate asynchronous task assignment in advance
    27  	LowCapacity int `toml:"low-capacity"`
    28  }
    29  
    30  func (c *Config) adjust() {
    31  	if c.CountPerAllocate == 0 {
    32  		c.CountPerAllocate = defaultCountPerAllocate
    33  	}
    34  	if c.LowCapacity == 0 ||
    35  		c.LowCapacity > c.CountPerAllocate {
    36  		c.LowCapacity = c.CountPerAllocate / 2
    37  	}
    38  }