storlets/src/java/SCommon/test/TestRangedFile.java

36 lines
1.3 KiB
Java

import org.openstack.storlet.common.*;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.FileDescriptor;
public class TestRangedFile {
private static void printContent(RangeFileInputStream rfis) throws Exception {
InputStream is = (InputStream)rfis;
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = br.readLine();
while (line != null) {
System.out.println(line);
line = br.readLine();
}
}
private static void processFile(String path, Long start, Long end) throws Exception {
// Open file and get fd.
FileInputStream f = new FileInputStream(path);
FileDescriptor fd = f.getFD();
// Create a RangeInputStream.
RangeFileInputStream rfis = new RangeFileInputStream(fd, start, end);
printContent(rfis);
}
public static void main(String[] args) throws Exception {
processFile("/tmp/test_file.txt", 0L, 100L);
processFile("/tmp/test_file.txt", 0L, 3L);
}
}