@SuppressWarnings("unchecked")
private boolean packTransactionalInstance(final Field afield, OutputObjectState os) {
Object ptr = null;
try {
ptr = afield.get(_theObject);
if (ptr == null) {
os.packBoolean(false);
} else {
os.packBoolean(true);
UidHelper.packInto(_container.getUidForHandle((T) ptr), os);
}
} catch (final ClassCastException ex) {
System.err.println("Field " + ptr + " is not a transactional instance!");
return false;
} catch (final Exception ex) {
ex.printStackTrace();
return false;
}
return true;
}
private boolean packObjectType(final Field afield, OutputObjectState os) {
try {
if (afield.getType().equals(Boolean.class))
os.packBoolean(((Boolean) afield.get(_theObject)).booleanValue());
else if (afield.getType().equals(Byte.class))
os.packByte(((Byte) afield.get(_theObject)).byteValue());
else if (afield.getType().equals(Short.class))
os.packShort(((Short) afield.get(_theObject)).shortValue());
else if (afield.getType().equals(Integer.class))
os.packInt(((Integer) afield.get(_theObject)).intValue());
else if (afield.getType().equals(Long.class))
os.packLong(((Long) afield.get(_theObject)).longValue());
else if (afield.getType().equals(Float.class))
os.packFloat(((Float) afield.get(_theObject)).floatValue());
else if (afield.getType().equals(Double.class))
os.packDouble(((Double) afield.get(_theObject)).doubleValue());
else if (afield.getType().equals(Character.class))
os.packChar(((Character) afield.get(_theObject)).charValue());
else if (afield.getType().equals(String.class))
os.packString((String) afield.get(_theObject));
else if (afield.getType().isAnnotationPresent(Transactional.class))
return packTransactionalInstance(afield, os);
else return false;
} catch (final Exception ex) {
ex.printStackTrace();
return false;
}
return true;
}
boolean removeState(Uid u, String tn, int s) throws ObjectStoreException {
try {
OutputObjectState removalState = new OutputObjectState(u, tn);
removalState.packBytes(_removedState);
if (!write_state(u, tn, removalState, s)) throw new ObjectStoreException();
} catch (IOException ex) {
throw new ObjectStoreException(ex.toString(), ex);
}
return true;
}
private boolean packPrimitive(final Field afield, OutputObjectState os) {
try {
/*
* TODO deal with arrays of primitive types.
*
* Workaround - provide saveState and restoreState annotations.
*/
if (afield.getType().equals(Boolean.TYPE)) os.packBoolean(afield.getBoolean(_theObject));
else if (afield.getType().equals(Byte.TYPE)) os.packByte(afield.getByte(_theObject));
else if (afield.getType().equals(Short.TYPE)) os.packShort(afield.getShort(_theObject));
else if (afield.getType().equals(Integer.TYPE)) os.packInt(afield.getInt(_theObject));
else if (afield.getType().equals(Long.TYPE)) os.packLong(afield.getLong(_theObject));
else if (afield.getType().equals(Float.TYPE)) os.packFloat(afield.getFloat(_theObject));
else if (afield.getType().equals(Double.TYPE)) os.packDouble(afield.getDouble(_theObject));
else if (afield.getType().equals(Character.TYPE)) os.packChar(afield.getChar(_theObject));
else return false;
} catch (final IOException ex) {
return false;
} catch (final Exception ex) {
return false;
}
return true;
}
/**
* Does nothing except indicate that this thread is finished with the log on behalf of this
* transaction.
*/
protected boolean remove_state(Uid u, String tn, int s) throws ObjectStoreException {
// maybe write a removal entry into the log.
try {
/*
* If we don't add a removal entry then recovery has to work a
* little harder to figure things out. But it has to cater for the
* situation where a removal record write fails anyway, so this
* shouldn't be a big deal. On the up side it improves performance
* by 30% for this implementation, which is a 40% improvement over
* the basic file-based log!
*/
/*
* If we write a removal record as a separate entity to the original
* data item then we cannot ensure that they will go into the same
* log with a pre-set size for the log. Therefore, we have two
* options:
*
* (i) find the old entry in the log and mark it as deleted.
* (ii) increase the size of the log to accommodate the removal entry.
*
* We currently go for option (ii) as this is the quickest.
*/
if (_synchronousRemoval) {
OutputObjectState removalState = new OutputObjectState(u, tn);
removalState.packBytes(_removedState);
if (!write_state(u, tn, removalState, s)) throw new ObjectStoreException();
} else _purger.addRemovedState(u, tn, s);
} catch (IOException ex) {
throw new ObjectStoreException(ex.toString(), ex);
} catch (final Throwable ex) {
ex.printStackTrace();
throw new ObjectStoreException(ex.toString(), ex);
} finally {
removeFromLog(u);
}
return true;
}
private boolean packPrimitiveArray(final Field afield, OutputObjectState os) {
boolean success = true;
try {
Class<?> c = afield.getType();
final int size = Array.getLength(afield.get(_theObject));
if (c.equals(int[].class)) {
final int[] objs = (int[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packInt(objs[i]);
} else if (c.equals(boolean[].class)) {
final boolean[] objs = (boolean[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packBoolean(objs[i]);
} else if (c.equals(byte[].class)) {
final byte[] objs = (byte[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packByte(objs[i]);
} else if (c.equals(short[].class)) {
final short[] objs = (short[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packShort(objs[i]);
} else if (c.equals(long[].class)) {
final long[] objs = (long[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packLong(objs[i]);
} else if (c.equals(float[].class)) {
final float[] objs = (float[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packFloat(objs[i]);
} else if (c.equals(double[].class)) {
final double[] objs = (double[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packDouble(objs[i]);
} else if (c.equals(char[].class)) {
final char[] objs = (char[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) os.packChar(objs[i]);
} else success = false;
} catch (final Throwable ex) {
ex.printStackTrace();
success = false;
}
return success;
}
public boolean save_state(OutputObjectState objectState, int objectType) {
super.save_state(objectState, objectType);
try {
for (int x = 0; x < _width; x++) {
for (int y = 0; y < _height; y++) {
objectState.packInt(_values[x][y]);
}
}
return true;
} catch (Exception exception) {
System.err.println("AITMatrixImpl01.save_state: " + exception);
return false;
}
}
/**
* write_state saves the ObjectState in a file named by the type and Uid of the ObjectState. If
* the second argument is SHADOW, then the file name is different so that a subsequent
* commit_state invocation will rename the file.
*
* <p>We need to make sure that each entry is written to the next empty location in the log even
* if there's already an entry for this tx.
*/
protected boolean write_state(Uid objUid, String tName, OutputObjectState state, int ft)
throws ObjectStoreException {
if (tsLogger.logger.isTraceEnabled()) {
tsLogger.logger.trace(
"ShadowingStore.write_state("
+ objUid
+ ", "
+ tName
+ ", "
+ StateType.stateTypeString(ft)
+ ")");
}
String fname = null;
File fd = null;
if (tName != null) {
int imageSize = (int) state.length();
byte[] uidString = objUid.stringForm().getBytes();
int buffSize =
_redzone.length
+ uidString.length
+ imageSize
+ 8; // don't put in endOfLog since we keep overwriting that.
RandomAccessFile ofile = null;
java.nio.channels.FileLock lock = null;
if (imageSize > 0) {
TransactionData theLogEntry =
getLogName(objUid, tName, buffSize); // always adds entry to log
LogInstance theLog = theLogEntry.container;
if (theLog == null) throw new ObjectStoreException();
fname = genPathName(theLog.getName(), tName, ft);
fd = openAndLock(fname, FileLock.F_WRLCK, true);
if (fd == null) {
tsLogger.i18NLogger.warn_objectstore_ShadowingStore_18(fname);
return false;
}
boolean setLength = !fd.exists();
try {
ofile = new RandomAccessFile(fd, FILE_MODE);
if (setLength) {
ofile.setLength(_maxFileSize);
} else {
// may have to resize file if we keep updating this transaction info
if (theLog.remaining() < buffSize) {
long size = ofile.length() + buffSize - theLog.remaining();
ofile.setLength(size);
theLog.resize(size);
}
}
java.nio.ByteBuffer buff = java.nio.ByteBuffer.allocate(buffSize);
buff.put(_redzone);
buff.putInt(uidString.length);
buff.put(uidString);
buff.putInt(imageSize);
buff.put(state.buffer());
synchronized (_lock) {
ofile.seek(theLogEntry.offset);
ofile.write(buff.array());
}
} catch (SyncFailedException e) {
unlockAndClose(fd, ofile);
throw new ObjectStoreException(
"ShadowingStore::write_state() - write failed to sync for " + fname, e);
} catch (FileNotFoundException e) {
unlockAndClose(fd, ofile);
e.printStackTrace();
throw new ObjectStoreException(
"ShadowingStore::write_state() - write failed to locate file " + fname + ": " + e, e);
} catch (IOException e) {
unlockAndClose(fd, ofile);
e.printStackTrace();
throw new ObjectStoreException(
"ShadowingStore::write_state() - write failed for " + fname + ": " + e, e);
} finally {
try {
if (lock != null) lock.release();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
if (!unlockAndClose(fd, ofile)) {
tsLogger.i18NLogger.warn_objectstore_ShadowingStore_19(fname);
}
super.addToCache(fname);
return true;
} else
throw new ObjectStoreException(
"ShadowStore::write_state - "
+ tsLogger.i18NLogger.get_objectstore_notypenameuid()
+ objUid);
}
/**
* This is a recovery-only method and should not be called during normal execution. As such we
* need to load in all of the logs we can find that aren't already loaded (or activated).
*/
public boolean allObjUids(String tName, InputObjectState state, int match)
throws ObjectStoreException {
/*
* match will always be OS_COMMITTED since that's all we ever write for
* the logs.
*/
// in case of asynchronous removals trigger the purger now.
_purger.trigger();
/*
* Get a list of logs. Load them in to memory if we aren't already
* working on them/it. But we can prune the entry once we're
* finished or the memory footprint will grow. We should do this
* for all frozen entries eventually too.
*/
InputObjectState logs = new InputObjectState();
OutputObjectState objUids = new OutputObjectState();
/*
* We never call this method except during recovery. As such we shouldn't
* need to worry about optimizations such as checking whether or not the
* log is in current working memory.
*/
if (!super.allObjUids(tName, logs, match)) return false;
else {
/*
* Now we have all of the log names let's attach to each one
* and locate the committed instances (not deleted.)
*/
Uid logName = new Uid(Uid.nullUid());
try {
do {
logName = UidHelper.unpackFrom(logs);
if (logName.notEquals(Uid.nullUid())) {
/*
* Could check to see if log is in current working memory.
*/
/*
* TODO
*
* First purge the log if we can, but we need to know that
* we're not playing with an instance that is being manipulated
* from another VM instance.
*/
ArrayList<InputObjectState> txs = scanLog(logName, tName);
if (txs.size() > 0) {
for (int i = 0; i < txs.size(); i++) {
UidHelper.packInto(txs.get(i).stateUid(), objUids);
}
}
}
} while (logName.notEquals(Uid.nullUid()));
// remember null terminator
UidHelper.packInto(Uid.nullUid(), objUids);
state.setBuffer(objUids.buffer());
} catch (final IOException ex) {
ex.printStackTrace();
return false;
}
return true;
}
}
/** save the endpoint reference to the coordinator for this participant */
protected void saveEndpointReference(OutputObjectState oos) throws IOException {
// the toString method will do what we need
oos.packString(endpoint.toString());
}
private boolean packObjectArray(final Field afield, OutputObjectState os) {
boolean success = true;
try {
Class<?> c = afield.getType();
final int size = Array.getLength(afield.get(_theObject));
if (c.equals(Integer[].class)) {
final Integer[] objs = (Integer[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packInt(objs[i]);
}
}
} else if (c.equals(Boolean[].class)) {
final Boolean[] objs = (Boolean[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packBoolean(objs[i]);
}
}
} else if (c.equals(Byte[].class)) {
final Byte[] objs = (Byte[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packByte(objs[i]);
}
}
} else if (c.equals(Short[].class)) {
final Short[] objs = (Short[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packShort(objs[i]);
}
}
} else if (c.equals(Long[].class)) {
final Long[] objs = (Long[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packLong(objs[i]);
}
}
} else if (c.equals(Float[].class)) {
final Float[] objs = (Float[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packFloat(objs[i]);
}
}
} else if (c.equals(Double[].class)) {
final Double[] objs = (Double[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packDouble(objs[i]);
}
}
} else if (c.equals(Character[].class)) {
final Character[] objs = (Character[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packChar(objs[i]);
}
}
} else if (c.equals(String[].class)) {
final String[] objs = (String[]) afield.get(_theObject);
for (int i = 0; (i < size) && success; i++) {
if (objs[i] == null) os.packBoolean(false);
else {
os.packBoolean(true);
os.packString(objs[i]);
}
}
} else {
System.err.println("Array type " + c + " not supported!");
success = false;
}
} catch (final Throwable ex) {
ex.printStackTrace();
success = false;
}
return success;
}
public boolean save_state(OutputObjectState os, int t) {
boolean res = false;
try {
os.packInt(_heuristic);
os.packBoolean(_committed);
/*
* Since we don't know what type of Xid we are using, leave it up to
* XID to pack.
*/
XidImple.pack(os, _tranID);
/*
* If no recovery object set then rely upon object serialisation!
*/
if (_recoveryObject == null) {
os.packInt(RecoverableXAConnection.OBJECT_RECOVERY);
os.packString(_productName);
os.packString(_productVersion);
os.packString(_jndiName);
if (_theXAResource instanceof Serializable) {
try {
ByteArrayOutputStream s = new ByteArrayOutputStream();
ObjectOutputStream o = new ObjectOutputStream(s);
o.writeObject(_theXAResource);
o.close();
os.packBoolean(true);
String name = _theXAResource.getClass().getName();
os.packString(name);
os.packBytes(s.toByteArray());
} catch (NotSerializableException ex) {
jtaLogger.i18NLogger.warn_resources_arjunacore_savestate();
return false;
}
} else {
// have to rely upon XAResource.recover!
os.packBoolean(false);
}
} else {
os.packInt(RecoverableXAConnection.AUTO_RECOVERY);
os.packString(_recoveryObject.getClass().getName());
_recoveryObject.packInto(os);
}
res = true;
} catch (Exception e) {
jtaLogger.i18NLogger.warn_resources_arjunacore_savestateerror(
_theXAResource.toString(), XAHelper.xidToString(_tranID), e);
res = false;
}
if (res) res = super.save_state(os, t);
return res;
}
