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Faster file storage file type inference

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This commit is contained in:
Alexander Nozik 2018-08-14 10:43:23 +03:00
parent e2de03fdcc
commit 2e312047cf
3 changed files with 17 additions and 9 deletions
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11
numass-core/src/main/kotlin/inr/numass/NumassEnvelopeType.kt
View File

@ -6,7 +6,7 @@ import hep.dataforge.values.parseValue
import org.slf4j.LoggerFactory
import java.io.IOException
import java.nio.ByteBuffer
import java.nio.file.Files
import java.nio.channels.FileChannel
import java.nio.file.Path
import java.nio.file.StandardOpenOption
import java.util.*
@ -101,10 +101,11 @@ class NumassEnvelopeType : EnvelopeType {
*/
fun infer(path: Path): EnvelopeType? {
return try {
Files.newInputStream(path, StandardOpenOption.READ).use {
val buffer = ByteArray(6)
it.read(buffer)
val header = String(buffer)
FileChannel.open(path, StandardOpenOption.READ).use {
val buffer = it.map(FileChannel.MapMode.READ_ONLY, 0, 6)
val array = ByteArray(6)
buffer.get(array)
val header = String(array)
when {
//TODO use templates from appropriate types
header.startsWith("#!") -> NumassEnvelopeType.INSTANCE

5
numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataLoader.kt
View File

@ -76,12 +76,13 @@ class NumassDataLoader(
}
private val pointEnvelopes: List<Envelope>
get() = Files.list(path)
private val pointEnvelopes: List<Envelope> by lazy {
Files.list(path)
.filter { it.fileName.toString().startsWith(POINT_FRAGMENT_NAME) }
.map {
NumassEnvelopeType.infer(it)?.reader?.read(it) ?: error("Can't read point file")
}.toList()
}
val isReversed: Boolean
get() = this.meta.getBoolean("iteration_info.reverse", false)

8
numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
View File

@ -4,6 +4,7 @@ import hep.dataforge.fx.dfIconView
import hep.dataforge.fx.meta.MetaViewer
import hep.dataforge.meta.Meta
import hep.dataforge.meta.Metoid
import hep.dataforge.names.AlphanumComparator
import hep.dataforge.storage.Storage
import hep.dataforge.storage.TableLoader
import hep.dataforge.storage.files.FileTableLoader
@ -74,7 +75,12 @@ class StorageView(val storage: Storage) : View(title = "Numass storage", icon =
val children: List<Container>? by lazy {
when (content) {
is Storage -> (runBlocking { content.getChildren() }.sortedBy { it.name }).map { buildContainer(it, this) }
is Storage -> runBlocking { content.getChildren() }.map { buildContainer(it, this) }.sortedWith(
object : Comparator<Container> {
private val alphanumComparator = AlphanumComparator()
override fun compare(o1: Container, o2: Container): Int = alphanumComparator.compare(o1.id, o2.id)
}
)
is NumassSet -> content.points
.sortedBy { it.index }
.map { buildContainer(it, this) }