/**
* Opens file and reads it to byte array.
*
* @param fs IgniteFs.
* @param path File path.
* @throws IgniteException If file can't be opened.
* @throws IOException If data can't be read.
*/
private static void read(IgniteFileSystem fs, IgfsPath path) throws IgniteException, IOException {
assert fs != null;
assert path != null;
assert fs.info(path).isFile();
byte[] data = new byte[(int) fs.info(path).length()];
try (IgfsInputStream in = fs.open(path)) {
in.read(data);
}
System.out.println();
System.out.println(">>> Read data from " + path + ": " + Arrays.toString(data));
}
/**
* Deletes file or directory. If directory is not empty, it's deleted recursively.
*
* @param fs IGFS.
* @param path File or directory path.
* @throws IgniteException In case of error.
*/
private static void delete(IgniteFileSystem fs, IgfsPath path) throws IgniteException {
assert fs != null;
assert path != null;
if (fs.exists(path)) {
boolean isFile = fs.info(path).isFile();
try {
fs.delete(path, true);
System.out.println();
System.out.println(">>> Deleted " + (isFile ? "file" : "directory") + ": " + path);
} catch (IgfsException e) {
System.out.println();
System.out.println(
">>> Failed to delete "
+ (isFile ? "file" : "directory")
+ " [path="
+ path
+ ", msg="
+ e.getMessage()
+ ']');
}
} else {
System.out.println();
System.out.println(">>> Won't delete file or directory (doesn't exist): " + path);
}
}
/**
* Opens file and appends provided data to it.
*
* @param fs IGFS.
* @param path File path.
* @param data Data.
* @throws IgniteException If file can't be created.
* @throws IOException If data can't be written.
*/
private static void append(IgniteFileSystem fs, IgfsPath path, byte[] data)
throws IgniteException, IOException {
assert fs != null;
assert path != null;
assert data != null;
assert fs.info(path).isFile();
try (OutputStream out = fs.append(path, true)) {
System.out.println();
System.out.println(">>> Opened file: " + path);
out.write(data);
}
System.out.println();
System.out.println(">>> Appended data to file: " + path);
}
/**
* Lists files in directory.
*
* @param fs IGFS.
* @param path Directory path.
* @throws IgniteException In case of error.
*/
private static void list(IgniteFileSystem fs, IgfsPath path) throws IgniteException {
assert fs != null;
assert path != null;
assert fs.info(path).isDirectory();
Collection<IgfsPath> files = fs.listPaths(path);
if (files.isEmpty()) {
System.out.println();
System.out.println(">>> No files in directory: " + path);
} else {
System.out.println();
System.out.println(">>> List of files in directory: " + path);
for (IgfsPath f : files) System.out.println(">>> " + f.name());
}
System.out.println();
}
/**
* Prints information for file or directory.
*
* @param fs IGFS.
* @param path File or directory path.
* @throws IgniteException In case of error.
*/
private static void printInfo(IgniteFileSystem fs, IgfsPath path) throws IgniteException {
System.out.println();
System.out.println("Information for " + path + ": " + fs.info(path));
}