use of org.apache.ignite.igfs.IgfsPathAlreadyExistsException in project ignite by apache.
the class IgfsMetaManager method create.
/**
* Create a file.
*
* @param path Path.
* @param dirProps Directory properties.
* @param overwrite Overwrite flag.
* @param blockSize Block size.
* @param affKey Affinity key.
* @param evictExclude Evict exclude flag.
* @param fileProps File properties.
* @param secondaryCtx Secondary file system create context.
* @return @return Operation result.
* @throws IgniteCheckedException If failed.
*/
IgfsCreateResult create(final IgfsPath path, Map<String, String> dirProps, final boolean overwrite, final int blockSize, @Nullable final IgniteUuid affKey, final boolean evictExclude, @Nullable Map<String, String> fileProps, @Nullable IgfsSecondaryFileSystemCreateContext secondaryCtx) throws IgniteCheckedException {
validTxState(false);
while (true) {
if (busyLock.enterBusy()) {
OutputStream secondaryOut = null;
try {
// Prepare path IDs.
IgfsPathIds pathIds = pathIds(path);
// Prepare lock IDs.
Set<IgniteUuid> lockIds = new TreeSet<>(PATH_ID_SORTING_COMPARATOR);
pathIds.addExistingIds(lockIds, relaxed);
pathIds.addSurrogateIds(lockIds);
// In overwrite mode we also lock ID of potential replacement as well as trash ID.
IgniteUuid overwriteId = IgniteUuid.randomUuid();
IgniteUuid trashId = IgfsUtils.randomTrashId();
if (overwrite) {
lockIds.add(overwriteId);
// Trash ID is only added if we suspect conflict.
if (pathIds.allExists())
lockIds.add(trashId);
}
// Start TX.
try (GridNearTxLocal tx = startTx()) {
Map<IgniteUuid, IgfsEntryInfo> lockInfos = lockIds(lockIds);
if (secondaryCtx != null && isRetryForSecondary(pathIds, lockInfos))
continue;
if (!pathIds.verifyIntegrity(lockInfos, relaxed))
// Directory structure changed concurrently. So we simply re-try.
continue;
if (pathIds.allExists()) {
// All participants found.
IgfsEntryInfo oldInfo = lockInfos.get(pathIds.lastId());
// Check: is it a file?
if (!oldInfo.isFile())
throw new IgfsPathIsDirectoryException("Failed to create a file: " + path);
// Check: can we overwrite it?
if (!overwrite)
throw new IgfsPathAlreadyExistsException("Failed to create a file: " + path);
// Check if file already opened for write.
if (oldInfo.lockId() != null)
throw new IgfsException("File is already opened for write: " + path);
// At this point file can be re-created safely.
// Add existing to trash listing.
IgniteUuid oldId = pathIds.lastId();
id2InfoPrj.invoke(trashId, new IgfsMetaDirectoryListingAddProcessor(IgfsUtils.composeNameForTrash(path, oldId), new IgfsListingEntry(oldInfo)));
// Replace ID in parent directory.
String name = pathIds.lastPart();
IgniteUuid parentId = pathIds.lastParentId();
id2InfoPrj.invoke(parentId, new IgfsMetaDirectoryListingReplaceProcessor(name, overwriteId));
// Create the file.
IgniteUuid newLockId = createFileLockId(false);
long newAccessTime;
long newModificationTime;
Map<String, String> newProps;
long newLen;
int newBlockSize;
if (secondaryCtx != null) {
secondaryOut = secondaryCtx.create();
newAccessTime = 0L;
newModificationTime = 0L;
newProps = null;
} else {
newAccessTime = System.currentTimeMillis();
newModificationTime = newAccessTime;
newProps = fileProps;
}
newLen = 0L;
newBlockSize = blockSize;
IgfsEntryInfo newInfo = invokeAndGet(overwriteId, new IgfsMetaFileCreateProcessor(newAccessTime, newModificationTime, newProps, newBlockSize, affKey, newLockId, evictExclude, newLen));
// Prepare result and commit.
tx.commit();
IgfsUtils.sendEvents(igfsCtx.kernalContext(), path, EventType.EVT_IGFS_FILE_OPENED_WRITE);
return new IgfsCreateResult(newInfo, secondaryOut);
} else {
// Create file and parent folders.
T1<OutputStream> secondaryOutHolder = null;
if (secondaryCtx != null)
secondaryOutHolder = new T1<>();
IgfsPathsCreateResult res;
try {
res = createFile(pathIds, lockInfos, dirProps, fileProps, blockSize, affKey, evictExclude, secondaryCtx, secondaryOutHolder);
} finally {
if (secondaryOutHolder != null)
secondaryOut = secondaryOutHolder.get();
}
if (res == null)
continue;
// Commit.
tx.commit();
// Generate events.
generateCreateEvents(res.createdPaths(), true);
return new IgfsCreateResult(res.info(), secondaryOut);
}
}
} catch (IgniteException | IgniteCheckedException e) {
U.closeQuiet(secondaryOut);
throw e;
} catch (Exception e) {
U.closeQuiet(secondaryOut);
throw new IgniteCheckedException("Create failed due to unexpected exception: " + path, e);
} finally {
busyLock.leaveBusy();
}
} else
throw new IllegalStateException("Failed to mkdir because Grid is stopping. [path=" + path + ']');
}
}
use of org.apache.ignite.igfs.IgfsPathAlreadyExistsException in project ignite by apache.
the class LocalIgfsSecondaryFileSystem method create0.
/**
* Internal create routine.
*
* @param path Path.
* @param overwrite Overwrite flag.
* @return Output stream.
*/
private OutputStream create0(IgfsPath path, boolean overwrite) {
File file = fileForPath(path);
boolean exists = file.exists();
if (exists) {
if (!overwrite)
throw new IgfsPathAlreadyExistsException("Failed to create a file because it already exists: " + path);
} else {
File parent = file.getParentFile();
if (!mkdirs0(parent))
throw new IgfsException("Failed to create parent directory for file (underlying file system " + "returned false): " + path);
}
try {
return new FileOutputStream(file);
} catch (IOException e) {
throw handleSecondaryFsError(e, "Failed to create file [path=" + path + ", overwrite=" + overwrite + ']');
}
}
use of org.apache.ignite.igfs.IgfsPathAlreadyExistsException in project ignite by apache.
the class IgfsMetaManager method move.
/**
* Move routine.
*
* @param srcPath Source path.
* @param dstPath Destination path.
* @throws IgniteCheckedException In case of exception.
*/
public void move(IgfsPath srcPath, IgfsPath dstPath) throws IgniteCheckedException {
if (busyLock.enterBusy()) {
try {
validTxState(false);
// Prepare path IDs.
IgfsPathIds srcPathIds = pathIds(srcPath);
IgfsPathIds dstPathIds = pathIds(dstPath);
// Source path must exists.
if (!srcPathIds.allExists())
throw new IgfsPathNotFoundException("Failed to perform move because source path is not " + "found: " + srcPath);
// At this point we need to understand name of resulting entry. It will be either destination leaf
// or source leaf depending on existence.
String dstName;
if (dstPathIds.lastExists())
// Full destination path exists -> use source name.
dstName = srcPathIds.lastPart();
else {
if (dstPathIds.lastParentExists()) {
// Destination path doesn't exists -> use destination name.
dstName = dstPathIds.lastPart();
dstPathIds = dstPathIds.parent();
} else
// Destination parent is not found either -> exception.
throw new IgfsPathNotFoundException("Failed to perform move because destination path is not " + "found: " + dstPath.parent());
}
// Lock participating IDs.
final Set<IgniteUuid> lockIds = new TreeSet<>(PATH_ID_SORTING_COMPARATOR);
srcPathIds.addExistingIds(lockIds, relaxed);
dstPathIds.addExistingIds(lockIds, relaxed);
try (GridNearTxLocal tx = startTx()) {
// Obtain the locks.
final Map<IgniteUuid, IgfsEntryInfo> lockInfos = lockIds(lockIds);
// Verify integrity of source and destination paths.
if (!srcPathIds.verifyIntegrity(lockInfos, relaxed))
throw new IgfsPathNotFoundException("Failed to perform move because source directory " + "structure changed concurrently [src=" + srcPath + ", dst=" + dstPath + ']');
if (!dstPathIds.verifyIntegrity(lockInfos, relaxed))
throw new IgfsPathNotFoundException("Failed to perform move because destination directory " + "structure changed concurrently [src=" + srcPath + ", dst=" + dstPath + ']');
// Addiional check: is destination directory?
IgfsEntryInfo dstParentInfo = lockInfos.get(dstPathIds.lastId());
if (dstParentInfo.isFile())
throw new IgfsPathAlreadyExistsException("Failed to perform move because destination points " + "to existing file [src=" + srcPath + ", dst=" + dstPath + ']');
// Additional check: does destination already has child with the same name?
if (dstParentInfo.hasChild(dstName))
throw new IgfsPathAlreadyExistsException("Failed to perform move because destination already " + "contains entry with the same name existing file [src=" + srcPath + ", dst=" + dstPath + ']');
// Actual move: remove from source parent and add to destination target.
IgfsEntryInfo srcParentInfo = lockInfos.get(srcPathIds.lastParentId());
IgfsEntryInfo srcInfo = lockInfos.get(srcPathIds.lastId());
String srcName = srcPathIds.lastPart();
IgfsListingEntry srcEntry = srcParentInfo.listing().get(srcName);
transferEntry(srcEntry, srcParentInfo.id(), srcName, dstParentInfo.id(), dstName);
tx.commit();
// Fire events.
IgfsPath newPath = new IgfsPath(dstPathIds.path(), dstName);
IgfsUtils.sendEvents(igfsCtx.kernalContext(), srcPath, newPath, srcInfo.isFile() ? EVT_IGFS_FILE_RENAMED : EVT_IGFS_DIR_RENAMED);
}
} finally {
busyLock.leaveBusy();
}
} else
throw new IllegalStateException("Failed to perform move because Grid is stopping [srcPath=" + srcPath + ", dstPath=" + dstPath + ']');
}
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