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h2database
提交 291face6 authored 作者: Thomas Mueller's avatar Thomas Mueller
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File system abstraction: if used directly, some file systems did not work… 

File system abstraction: if used directly, some file systems did not work correctly with spliced byte buffers (the database engine doesn't use those).
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正在显示 包含 161 行增加 和 32 行删除
h2/src/main/org/h2/store/fs/FileChannelInputStream.java
浏览文件 @ 291face6
......@@ -18,7 +18,9 @@ public class FileChannelInputStream extends InputStream {
private final FileChannel channel;
private final boolean closeChannel;
private final byte[] buffer = { 0 };
private ByteBuffer buffer;
private long pos;
/**
* Create a new file object input stream from the file channel.
......@@ -33,11 +35,15 @@ public class FileChannelInputStream extends InputStream {
@Override
public int read() throws IOException {
if (channel.position() >= channel.size()) {
if (buffer == null) {
buffer = ByteBuffer.allocate(1);
}
buffer.rewind();
int len = channel.read(buffer, pos++);
if (len < 0) {
return -1;
}
FileUtils.readFully(channel, ByteBuffer.wrap(buffer));
return buffer[0] & 0xff;
return buffer.get(0) & 0xff;
}
@Override
......@@ -47,11 +53,13 @@ public class FileChannelInputStream extends InputStream {
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (channel.position() + len < channel.size()) {
FileUtils.readFully(channel, ByteBuffer.wrap(b, off, len));
return len;
ByteBuffer buff = ByteBuffer.wrap(b, off, len);
int read = channel.read(buff, pos);
if (read == -1) {
return -1;
}
return super.read(b, off, len);
pos += read;
return read;
}
@Override
......
h2/src/main/org/h2/store/fs/FilePathCrypt.java
浏览文件 @ 291face6
......@@ -256,7 +256,7 @@ public class FilePathCrypt extends FilePathWrapper {
readFully(base, position + HEADER_LENGTH, dst);
long block = position / BLOCK_SIZE;
while (len > 0) {
xts.decrypt(block++, BLOCK_SIZE, dst.array(), x);
xts.decrypt(block++, BLOCK_SIZE, dst.array(), dst.arrayOffset() + x);
x += BLOCK_SIZE;
len -= BLOCK_SIZE;
}
......@@ -317,7 +317,7 @@ public class FilePathCrypt extends FilePathWrapper {
long block = position / BLOCK_SIZE;
int x = 0, l = len;
while (l > 0) {
xts.encrypt(block++, BLOCK_SIZE, crypt.array(), x);
xts.encrypt(block++, BLOCK_SIZE, crypt.array(), crypt.arrayOffset() + x);
x += BLOCK_SIZE;
l -= BLOCK_SIZE;
}
......
h2/src/main/org/h2/store/fs/FilePathDisk.java
浏览文件 @ 291face6
......@@ -443,7 +443,7 @@ class FileDisk extends FileBase {
@Override
public int read(ByteBuffer dst) throws IOException {
int len = file.read(dst.array(), dst.position(), dst.remaining());
int len = file.read(dst.array(), dst.arrayOffset() + dst.position(), dst.remaining());
if (len > 0) {
dst.position(dst.position() + len);
}
......@@ -459,7 +459,7 @@ class FileDisk extends FileBase {
@Override
public int write(ByteBuffer src) throws IOException {
int len = src.remaining();
file.write(src.array(), src.position(), len);
file.write(src.array(), src.arrayOffset() + src.position(), len);
src.position(src.position() + len);
return len;
}
......
h2/src/main/org/h2/store/fs/FilePathMem.java
浏览文件 @ 291face6
......@@ -274,7 +274,7 @@ class FileMem extends FileBase {
return 0;
}
data.touch(readOnly);
pos = data.readWrite(pos, src.array(), src.position(), len, true);
pos = data.readWrite(pos, src.array(), src.arrayOffset() + src.position(), len, true);
src.position(src.position() + len);
return len;
}
......@@ -285,7 +285,7 @@ class FileMem extends FileBase {
if (len == 0) {
return 0;
}
long newPos = data.readWrite(pos, dst.array(), dst.position(), len, false);
long newPos = data.readWrite(pos, dst.array(), dst.arrayOffset() + dst.position(), len, false);
len = (int) (newPos - pos);
if (len <= 0) {
return -1;
......
h2/src/main/org/h2/store/fs/FilePathNioMapped.java
浏览文件 @ 291face6
......@@ -175,7 +175,7 @@ class FileNioMapped extends FileBase {
return -1;
}
mapped.position(pos);
mapped.get(dst.array(), dst.position(), len);
mapped.get(dst.array(), dst.arrayOffset() + dst.position(), len);
dst.position(dst.position() + len);
pos += len;
return len;
......
h2/src/main/org/h2/store/fs/FilePathRec.java
浏览文件 @ 291face6
......@@ -178,7 +178,7 @@ class FileRec extends FileBase {
int len = src.remaining();
if (src.position() != 0 || len != buff.length) {
byte[] b = new byte[len];
System.arraycopy(buff, src.position(), b, 0, len);
System.arraycopy(buff, src.arrayOffset() + src.position(), b, 0, len);
buff = b;
}
int result = channel.write(src);
......
h2/src/main/org/h2/store/fs/FilePathZip.java
浏览文件 @ 291face6
......@@ -281,7 +281,7 @@ class FileZip extends FileBase {
@Override
public int read(ByteBuffer dst) throws IOException {
seek();
int len = in.read(dst.array(), dst.position(), dst.remaining());
int len = in.read(dst.array(), dst.arrayOffset() + dst.position(), dst.remaining());
if (len > 0) {
dst.position(dst.position() + len);
pos += len;
......
h2/src/test/org/h2/test/unit/TestFileSystem.java
浏览文件 @ 291face6
......@@ -22,7 +22,13 @@ import java.sql.SQLException;
import java.sql.Statement;
import java.util.List;
import java.util.Random;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.h2.dev.fs.FilePathZip2;
import org.h2.message.DbException;
import org.h2.mvstore.DataUtils;
import org.h2.mvstore.cache.FilePathCache;
import org.h2.store.fs.FilePath;
import org.h2.store.fs.FilePathCrypt;
import org.h2.store.fs.FileUtils;
......@@ -57,11 +63,16 @@ public class TestFileSystem extends TestBase {
testDirectories(getBaseDir());
testMoveTo(getBaseDir());
testUnsupportedFeatures(getBaseDir());
FilePathZip2.register();
FilePath.register(new FilePathCache());
testZipFileSystem("zip:");
testZipFileSystem("cache:zip:");
testZipFileSystem("zip2:");
testZipFileSystem("cache:zip2:");
testMemFsDir();
testClasspath();
FilePathDebug.register().setTrace(true);
FilePathCrypt.register();
testFileSystem("crypt:0007:" + getBaseDir() + "/fs");
testSimpleExpandTruncateSize();
testSplitDatabaseInZip();
testDatabaseInMemFileSys();
......@@ -77,7 +88,10 @@ public class TestFileSystem extends TestBase {
testUserHome();
try {
testFileSystem("nio:" + getBaseDir() + "/fs");
testFileSystem("cache:nio:" + getBaseDir() + "/fs");
testFileSystem("nioMapped:" + getBaseDir() + "/fs");
testFileSystem("crypt:0007:" + getBaseDir() + "/fs");
testFileSystem("cache:crypt:0007:" + getBaseDir() + "/fs");
if (!config.splitFileSystem) {
testFileSystem("split:" + getBaseDir() + "/fs");
testFileSystem("split:nioMapped:" + getBaseDir() + "/fs");
......@@ -93,6 +107,98 @@ public class TestFileSystem extends TestBase {
}
}
private void testZipFileSystem(String prefix) throws IOException {
Random r = new Random(1);
for (int i = 0; i < 5; i++) {
testZipFileSystem(prefix, r);
}
}
private void testZipFileSystem(String prefix, Random r) throws IOException {
byte[] data = new byte[r.nextInt(16 * 1024)];
long x = r.nextLong();
FilePath file = FilePath.get(getBaseDir() + "/fs/readonly" + x + ".zip");
r.nextBytes(data);
OutputStream out = file.newOutputStream(false);
ZipOutputStream zipOut = new ZipOutputStream(out);
ZipEntry entry = new ZipEntry("data");
zipOut.putNextEntry(entry);
zipOut.write(data);
zipOut.closeEntry();
zipOut.close();
out.close();
FilePath fp = FilePath.get(
prefix + getBaseDir() + "/fs/readonly" + x + ".zip!data");
FileChannel fc = fp.open("r");
StringBuilder buff = new StringBuilder();
try {
int pos = 0;
for (int i = 0; i < 100; i++) {
trace("op " + i);
switch (r.nextInt(5)) {
case 0: {
int p = r.nextInt(data.length);
trace("seek " + p);
buff.append("seek " + p + "\n");
fc.position(p);
pos = p;
break;
}
case 1: {
int len = r.nextInt(1000);
int offset = r.nextInt(100);
int arrayLen = len + offset;
len = Math.min(len, data.length - pos);
byte[] b1 = new byte[arrayLen];
byte[] b2 = new byte[arrayLen];
trace("readFully " + len);
buff.append("readFully " + len + "\n");
System.arraycopy(data, pos, b1, offset, len);
ByteBuffer byteBuff = createSlicedBuffer(b2, offset, len);
FileUtils.readFully(fc, byteBuff);
assertEquals(b1, b2);
pos += len;
break;
}
case 2: {
int len = r.nextInt(1000);
int offset = r.nextInt(100);
int arrayLen = len + offset;
int p = r.nextInt(data.length);
len = Math.min(len, data.length - p);
byte[] b1 = new byte[arrayLen];
byte[] b2 = new byte[arrayLen];
trace("readFully " + p + " " + len);
buff.append("readFully " + p + " " + len + "\n");
System.arraycopy(data, p, b1, offset, len);
ByteBuffer byteBuff = createSlicedBuffer(b2, offset, len);
DataUtils.readFully(fc, p, byteBuff);
assertEquals(b1, b2);
break;
}
case 3: {
trace("getFilePointer");
buff.append("getFilePointer\n");
assertEquals(pos, fc.position());
break;
}
case 4: {
trace("length " + data.length);
buff.append("length " + data.length + "\n");
assertEquals(data.length, fc.size());
break;
}
default:
}
}
fc.close();
file.delete();
} catch (Throwable e) {
e.printStackTrace();
fail("Exception: " + e + "\n"+ buff.toString());
}
}
private void testAbsoluteRelative() {
assertFalse(FileUtils.isAbsolute("test/abc"));
assertTrue(FileUtils.isAbsolute("~/test/abc"));
......@@ -512,12 +618,16 @@ public class TestFileSystem extends TestBase {
break;
}
case 1: {
byte[] buffer = new byte[random.nextInt(1000)];
int arrayLen = random.nextInt(1000);
int offset = random.nextInt(arrayLen / 10);
int len = random.nextInt(arrayLen - offset);
byte[] buffer = new byte[arrayLen];
ByteBuffer byteBuff = createSlicedBuffer(buffer, offset, len);
random.nextBytes(buffer);
trace("write " + buffer.length);
buff.append("write " + buffer.length + "\n");
f.write(ByteBuffer.wrap(buffer));
ra.write(buffer, 0, buffer.length);
trace("write " + offset + " len " + len);
buff.append("write " + offset + " " + len + "\n");
f.write(byteBuff);
ra.write(buffer, offset, len);
break;
}
case 2: {
......@@ -534,13 +644,16 @@ public class TestFileSystem extends TestBase {
}
case 3: {
int len = random.nextInt(1000);
int offset = random.nextInt(100);
int arrayLen = len + offset;
len = (int) Math.min(len, ra.length() - ra.getFilePointer());
byte[] b1 = new byte[len];
byte[] b2 = new byte[len];
byte[] b1 = new byte[arrayLen];
byte[] b2 = new byte[arrayLen];
trace("readFully " + len);
buff.append("readFully " + len + "\n");
ra.readFully(b1, 0, len);
FileUtils.readFully(f, ByteBuffer.wrap(b2, 0, len));
ra.readFully(b1, offset, len);
ByteBuffer byteBuff = createSlicedBuffer(b2, offset, len);
FileUtils.readFully(f, byteBuff);
assertEquals(b1, b2);
break;
}
......@@ -580,6 +693,15 @@ public class TestFileSystem extends TestBase {
}
}
private static ByteBuffer createSlicedBuffer(byte[] buffer, int offset, int len) {
ByteBuffer byteBuff = ByteBuffer.wrap(buffer);
byteBuff.position(offset);
// force the arrayOffset to be non-0
byteBuff = byteBuff.slice();
byteBuff.limit(len);
return byteBuff;
}
private void testTempFile(String fsBase) throws Exception {
int len = 10000;
String s = FileUtils.createTempFile(fsBase + "/tmp", ".tmp", false, false);
......
h2/src/tools/org/h2/dev/fs/FilePathZip2.java
浏览文件 @ 291face6
......@@ -29,8 +29,7 @@ import org.h2.util.New;
/**
* This is a read-only file system that allows to access databases stored in a
* .zip or .jar file. The problem of this file system is that data is always
* accessed as a stream. But unlike FileSystemZip, it is possible to stack file
* systems.
* accessed as a stream. This implementation allows to stack file systems.
*/
public class FilePathZip2 extends FilePath {
......@@ -363,7 +362,7 @@ class FileZip2 extends FileBase {
@Override
public int read(ByteBuffer dst) throws IOException {
seek();
int len = in.read(dst.array(), dst.position(), dst.remaining());
int len = in.read(dst.array(), dst.arrayOffset() + dst.position(), dst.remaining());
if (len > 0) {
dst.position(dst.position() + len);
pos += len;
......@@ -447,7 +446,7 @@ class FileZip2 extends FileBase {
@Override
public String toString() {
return name;
return "zip2:" + name;
}
}
\ No newline at end of file
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