com.uber.hoodie.exception.DatasetNotFoundException Maven / Gradle / Ivy
/*
* Copyright (c) 2016 Uber Technologies, Inc. ([email protected])
*
* 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 com.uber.hoodie.exception;
import java.io.IOException;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
/**
* Exception thrown to indicate that a hoodie dataset was not found on the path provided
*/
public class DatasetNotFoundException extends HoodieException {
public DatasetNotFoundException(String basePath) {
super(getErrorMessage(basePath));
}
private static String getErrorMessage(String basePath) {
return "Hoodie dataset not found in path " + basePath;
}
public static void checkValidDataset(FileSystem fs, Path basePathDir, Path metaPathDir)
throws DatasetNotFoundException {
// Check if the base path is found
try {
if (!fs.exists(basePathDir) || !fs.isDirectory(basePathDir)) {
throw new DatasetNotFoundException(basePathDir.toString());
}
// Check if the meta path is found
if (!fs.exists(metaPathDir) || !fs.isDirectory(metaPathDir)) {
throw new DatasetNotFoundException(metaPathDir.toString());
}
} catch (IllegalArgumentException e) {
// if the base path is file:///, then we have a IllegalArgumentException
throw new DatasetNotFoundException(metaPathDir.toString());
} catch (IOException e) {
throw new HoodieIOException(
"Could not check if dataset " + basePathDir + " is valid dataset", e);
}
}
}