public static Blob file2Blob(final File file, final BytesPool pool) {
InputStream is = null;
PooledBytesOutputStream os = null;
try {
is = new FileInputStream(file);
os = new PooledBytesOutputStream(pool);
inputStream2OutputStream(is, os);
return os.drainToBlob();
} catch (Exception e) {
LOG.warn(
"exception when file2Blob for file {}, detail: {}",
file,
ExceptionUtils.exception2detail(e));
} finally {
if (null != is) {
try {
is.close();
} catch (IOException e) {
}
}
if (null != os) {
try {
os.close();
} catch (IOException e) {
}
}
}
return null;
}
public static long inputStream2OutputStream(
final InputStream is, final PooledBytesOutputStream os) {
long totalBytes = 0;
final Ref<byte[]> bytes = os.pool().retainObject();
try {
while (is.available() > 0) {
final int actualSize = is.read(bytes.object());
if (actualSize == -1) {
break;
}
os.write(bytes.object(), 0, actualSize);
totalBytes += actualSize;
if (LOG.isTraceEnabled()) {
LOG.trace("read bytebuf's content to bytesList, size {}", actualSize);
}
}
} catch (Exception e) {
LOG.warn(
"exception when inputStream -> OutputStream, detail: {}",
ExceptionUtils.exception2detail(e));
} finally {
bytes.release();
}
return totalBytes;
}
public static InputStream inputStream2BytesListInputStream(
final InputStream is, final BytesPool pool) {
final PooledBytesOutputStream os = new PooledBytesOutputStream(pool);
inputStream2OutputStream(is, os);
return Blob.Utils.releaseAndGenInputStream(os.drainToBlob());
}