github.com/vescale/zgraph@v0.0.0-20230410094002-959c02d50f95/storage/gc/worker.go (about)

     1  // Copyright 2022 zGraph Authors. All rights reserved.
     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 gc
    16  
    17  import (
    18  	"context"
    19  	"sync/atomic"
    20  
    21  	"github.com/cockroachdb/pebble"
    22  	"github.com/vescale/zgraph/storage/resolver"
    23  )
    24  
    25  // worker represents a GC worker which is used to clean staled versions.
    26  type worker struct {
    27  	db       *pebble.DB
    28  	resolver *resolver.Scheduler
    29  	closed   atomic.Bool
    30  }
    31  
    32  func newWorker(db *pebble.DB, resolver *resolver.Scheduler) *worker {
    33  	return &worker{
    34  		db:       db,
    35  		resolver: resolver,
    36  	}
    37  }
    38  
    39  func (w *worker) run(ctx context.Context, queue <-chan Task) {
    40  	for {
    41  		select {
    42  		case task, ok := <-queue:
    43  			if !ok {
    44  				return
    45  			}
    46  			w.execute(task)
    47  
    48  		case <-ctx.Done():
    49  			return
    50  		}
    51  	}
    52  }
    53  
    54  func (w *worker) execute(task Task) {
    55  
    56  }