/
FileLayerProvider.scala
49 lines (42 loc) · 1.56 KB
/
FileLayerProvider.scala
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/*
* Copyright 2017 Azavea
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package geotrellis.spark.io.file
import geotrellis.spark._
import geotrellis.spark.io._
import org.apache.spark.SparkContext
import java.net.URI
import java.io.File
/**
* Provides [[FileLayerReader]] instance for URI with `file` scheme.
* The uri represents local path to catalog root.
* ex: `file:/tmp/catalog`
*/
class FileLayerProvider extends AttributeStoreProvider
with LayerReaderProvider with LayerWriterProvider {
def canProcess(uri: URI): Boolean = uri.getScheme.toLowerCase == "file"
def attributeStore(uri: URI): AttributeStore = {
val file = new File(uri)
new FileAttributeStore(file.getCanonicalPath)
}
def layerReader(uri: URI, store: AttributeStore, sc: SparkContext): FilteringLayerReader[LayerId] = {
val file = new File(uri)
new FileLayerReader(store, file.getCanonicalPath)(sc)
}
def layerWriter(uri: URI, store: AttributeStore): LayerWriter[LayerId] = {
val file = new File(uri)
new FileLayerWriter(store, file.getCanonicalPath)
}
}