39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
/*
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* Copyright 2020 The Dragonfly Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cdnutil
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import (
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"d7y.io/dragonfly/v2/cdn/config"
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)
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// ComputePieceSize computes the piece size with specified fileLength.
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//
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// If the fileLength<=0, which means failed to get fileLength
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// and then use the DefaultPieceSize.
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func ComputePieceSize(length int64) uint32 {
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if length <= 0 || length <= 200*1024*1024 {
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return config.DefaultPieceSize
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}
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gapCount := length / int64(100*1024*1024)
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mpSize := (gapCount-2)*1024*1024 + config.DefaultPieceSize
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if mpSize > config.DefaultPieceSizeLimit {
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return config.DefaultPieceSizeLimit
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}
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return uint32(mpSize)
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}
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