dcapwell commented on code in PR #2299: URL: https://github.com/apache/cassandra/pull/2299#discussion_r1187606182
########## test/unit/org/apache/cassandra/io/util/Files.java: ########## @@ -0,0 +1,94 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 org.apache.cassandra.io.util; + +import java.io.IOException; +import java.nio.file.FileSystem; + +import com.google.common.base.StandardSystemProperty; +import com.google.common.jimfs.Configuration; +import com.google.common.jimfs.Jimfs; + +import org.apache.cassandra.io.filesystem.ForwardingFileSystem; +import org.apache.cassandra.io.filesystem.ListenableFileSystem; + +public class Files +{ + public static ListenableFileSystem newInMemoryFileSystem() + { + return new ListenableFileSystem(jimfs()); + } + + public static ListenableFileSystem newGlobalInMemoryFileSystem() + { + return global(jimfs()); + } + + public static ListenableFileSystem global() + { + return global(File.unsafeGetFilesystem()); + } + + public static ListenableFileSystem global(FileSystem real) + { + FileSystem current = File.unsafeGetFilesystem(); + ListenableFileSystem fs = new ListenableFileSystem(new ForwardingFileSystem(real) + { + @Override + public void close() throws IOException + { + try + { + super.close(); + } + finally + { + File.unsafeSetFilesystem(current); + } + } + }); + File.unsafeSetFilesystem(fs); + return fs; + } + + public static FileSystem jimfs() + { + return Jimfs.newFileSystem(jimfsConfig()); + } + + public static FileSystem jimfs(String name) + { + return Jimfs.newFileSystem(name, jimfsConfig()); + } + + private static Configuration jimfsConfig() + { + return Configuration.unix().toBuilder() + .setMaxSize(4L << 30).setBlockSize(512) + .build(); + } + + public static File maybeCreateTmp() Review Comment: fair, but this is only used for new file systems, and not a core `File` usage -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
