50 lines
1.6 KiB
Kotlin
50 lines
1.6 KiB
Kotlin
/*
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Mangadex@Home
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Copyright (c) 2020, MangaDex Network
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This file is part of MangaDex@Home.
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MangaDex@Home is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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MangaDex@Home is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this MangaDex@Home. If not, see <http://www.gnu.org/licenses/>.
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*/
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package mdnet.cache
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import org.ktorm.schema.*
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import org.ktorm.schema.Table
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object DbImage : Table<Nothing>("IMAGES") {
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val id = varchar("id").primaryKey()
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val accessed = timestamp("accessed")
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val size = int("size")
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}
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const val INIT_TABLE = """
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create table if not exists Images(
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id varchar primary key not null,
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size integer not null,
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accessed timestamp not null default CURRENT_TIMESTAMP,
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disk_size integer as ((size + 4095) / 4096 * 4096)
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);
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create index if not exists Images_lastAccessed_idx on Images(accessed, disk_size, id);
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"""
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const val SIZE_TAKEN_SQL = "select sum(disk_size) from Images"
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const val IMAGES_TO_PRUNE = """
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select id from (
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select id, sum(disk_size)
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OVER (order by accessed rows unbounded preceding exclude current row)
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as RunningTotal from Images
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) as X
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WHERE coalesce(X.RunningTotal, 0) <= ?;
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"""
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