private Pair<Map<String, String>, Boolean /*true=needs to be set*/> findIndexConfig(
Class<? extends PropertyContainer> cls,
String indexName,
Map<String, String> suppliedConfig,
Map<?, ?> dbConfig) {
// Check stored config (has this index been created previously?)
Map<String, String> storedConfig = indexStore.get(cls, indexName);
if (storedConfig != null && suppliedConfig == null) {
// Fill in "provider" if not already filled in, backwards compatibility issue
Map<String, String> newConfig =
injectDefaultProviderIfMissing(cls, indexName, dbConfig, storedConfig);
if (newConfig != storedConfig) {
indexStore.set(cls, indexName, newConfig);
}
return Pair.of(newConfig, Boolean.FALSE);
}
Map<String, String> configToUse = suppliedConfig;
// Check db config properties for provider
String provider = null;
IndexImplementation indexProvider = null;
if (configToUse == null) {
provider = getDefaultProvider(indexName, dbConfig);
configToUse = MapUtil.stringMap(PROVIDER, provider);
} else {
provider = configToUse.get(PROVIDER);
provider = provider == null ? getDefaultProvider(indexName, dbConfig) : provider;
}
indexProvider = getIndexProvider(provider);
configToUse = indexProvider.fillInDefaults(configToUse);
configToUse = injectDefaultProviderIfMissing(cls, indexName, dbConfig, configToUse);
// Do they match (stored vs. supplied)?
if (storedConfig != null) {
assertConfigMatches(indexProvider, indexName, storedConfig, suppliedConfig);
// Fill in "provider" if not already filled in, backwards compatibility issue
Map<String, String> newConfig =
injectDefaultProviderIfMissing(cls, indexName, dbConfig, storedConfig);
if (newConfig != storedConfig) {
indexStore.set(cls, indexName, newConfig);
}
configToUse = newConfig;
}
boolean needsToBeSet = !indexStore.has(cls, indexName);
return Pair.of(Collections.unmodifiableMap(configToUse), needsToBeSet);
}
private Pair<Map<String, String>, /*was it created now?*/ Boolean> getOrCreateIndexConfig(
Class<? extends PropertyContainer> cls,
String indexName,
Map<String, String> suppliedConfig) {
Pair<Map<String, String>, Boolean> result =
findIndexConfig(cls, indexName, suppliedConfig, config.getParams());
boolean createdNow = false;
if (result.other()) { // Ok, we need to create this config
synchronized (this) { // Were we the first ones to get here?
Map<String, String> existing = indexStore.get(cls, indexName);
if (existing != null) {
// No, someone else made it before us, cool
assertConfigMatches(
getIndexProvider(existing.get(PROVIDER)), indexName, existing, result.first());
return Pair.of(result.first(), false);
}
// We were the first one here, let's create this config
ExecutorService executorService = Executors.newSingleThreadExecutor();
try {
executorService.submit(new IndexCreatorJob(cls, indexName, result.first())).get();
indexStore.set(cls, indexName, result.first());
createdNow = true;
} catch (ExecutionException ex) {
throw new TransactionFailureException(
"Index creation failed for " + indexName + ", " + result.first(), ex.getCause());
} catch (InterruptedException ex) {
Thread.interrupted();
} finally {
executorService.shutdownNow();
}
}
}
return Pair.of(result.first(), createdNow);
}
@Override
public String setConfiguration(
Index<? extends PropertyContainer> index, String key, String value) {
assertLegalConfigKey(key);
Map<String, String> config = getMutableConfig(index);
String oldValue = config.put(key, value);
indexStore.set(index.getEntityType(), index.getName(), config);
return oldValue;
}
@Override
public String removeConfiguration(Index<? extends PropertyContainer> index, String key) {
assertLegalConfigKey(key);
Map<String, String> config = getMutableConfig(index);
String value = config.remove(key);
if (value != null) {
indexStore.set(index.getEntityType(), index.getName(), config);
}
return value;
}
private void removeProvidersFromIndexDbFile(File storeDir) {
IndexStore indexStore = new IndexStore(storeDir.getPath());
for (Class<? extends PropertyContainer> cls : new Class[] {Node.class, Relationship.class}) {
for (String name : indexStore.getNames(cls)) {
Map<String, String> config = indexStore.get(cls, name);
config = new HashMap<String, String>(config);
config.remove(IndexManager.PROVIDER);
indexStore.set(Node.class, name, config);
}
}
}