go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/bisection/server/pagination_utils.go (about)

     1  // Copyright 2022 The LUCI Authors.
     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 server
    16  
    17  type PageSizeLimiter struct {
    18  	Max     int32
    19  	Default int32
    20  }
    21  
    22  // Adjust the requested pageSize according to PageSizeLimiter.Max and
    23  // PageSizeLimiter.Default as necessary.
    24  func (psl *PageSizeLimiter) Adjust(pageSize int32) int32 {
    25  	switch {
    26  	case pageSize >= psl.Max:
    27  		return psl.Max
    28  	case pageSize > 0:
    29  		return pageSize
    30  	default:
    31  		return psl.Default
    32  	}
    33  }