public boolean requiresInitialization(FileLock lock) {
if (!didRebuild) {
if (validator != null && !validator.isValid()) {
LOGGER.debug(
"Invalidating {} as cache validator return false.",
DefaultPersistentDirectoryCache.this);
return true;
}
}
if (!lock.getUnlockedCleanly()) {
if (!lock.getState().isInInitialState()) {
LOGGER.warn(
"Invalidating {} as it was not closed cleanly.",
DefaultPersistentDirectoryCache.this);
}
return true;
}
Properties cachedProperties = GUtil.loadProperties(propertiesFile);
for (Map.Entry<?, ?> entry : properties.entrySet()) {
String previousValue = cachedProperties.getProperty(entry.getKey().toString());
String currentValue = entry.getValue().toString();
if (!previousValue.equals(currentValue)) {
LOGGER.debug(
"Invalidating {} as cache property {} has changed from {} to {}.",
DefaultPersistentDirectoryCache.this,
entry.getKey(),
previousValue,
currentValue);
return true;
}
}
return false;
}
private boolean onStartWork() {
if (fileLock != null) {
return false;
}
fileLock =
lockManager.lock(
lockFile,
lockOptions.withMode(Exclusive),
cacheDisplayName,
operations.getDescription());
stateAtOpen = fileLock.getState();
for (UnitOfWorkParticipant cache : caches) {
cache.onStartWork(operations.getDescription(), stateAtOpen);
}
lockManager.allowContention(fileLock, whenContended());
return true;
}
private void closeFileLock() {
try {
cacheClosedCount++;
try {
// Close the caches and then notify them of the final state, in case the caches do work on
// close
new CompositeStoppable().add(caches).stop();
FileLock.State state = fileLock.getState();
for (MultiProcessSafePersistentIndexedCache cache : caches) {
cache.onEndWork(state);
}
} finally {
fileLock.close();
}
} finally {
fileLock = null;
stateAtOpen = null;
contended = false;
}
}
/**
* Opens this cache access with the given lock mode. Calling this with {@link
* org.gradle.cache.internal.FileLockManager.LockMode#Exclusive} will lock the cache for exclusive
* access from all other threads (including those in this process and all other processes), until
* {@link #close()} is called.
*
* @param lockOptions
*/
public void open(LockOptions lockOptions) {
lock.lock();
try {
if (owner != null) {
throw new IllegalStateException(
String.format("Cannot open the %s, as it is already in use.", cacheDisplayName));
}
this.lockOptions = lockOptions;
if (lockOptions.getMode() == FileLockManager.LockMode.None) {
return;
}
if (fileLock != null) {
throw new IllegalStateException("File lock " + lockFile + " is already open.");
}
fileLock = lockManager.lock(lockFile, lockOptions, cacheDisplayName);
stateAtOpen = fileLock.getState();
takeOwnership(String.format("Access %s", cacheDisplayName));
lockManager.allowContention(fileLock, whenContended());
} finally {
lock.unlock();
}
}