public AssertingSearcher(
IndexSearcher indexSearcher, Searcher wrappedSearcher, ShardId shardId) {
// we only use the given index searcher here instead of the IS of the wrapped searcher. the IS
// might be a wrapped searcher
// with a wrapped reader.
this.wrappedSearcher = wrappedSearcher;
this.shardId = shardId;
initialRefCount = wrappedSearcher.reader().getRefCount();
this.indexSearcher = indexSearcher;
assert initialRefCount > 0
: "IndexReader#getRefCount() was ["
+ initialRefCount
+ "] expected a value > [0] - reader is already closed";
INFLIGHT_ENGINE_SEARCHERS.put(
this,
new RuntimeException("Unreleased Searcher, source [" + wrappedSearcher.source() + "]"));
}
@Override
public void close() throws ElasticsearchException {
RuntimeException remove = INFLIGHT_ENGINE_SEARCHERS.remove(this);
synchronized (lock) {
// make sure we only get this once and store the stack of the first caller!
if (remove == null) {
assert firstReleaseStack != null;
AssertionError error =
new AssertionError(
"Released Searcher more than once, source [" + wrappedSearcher.source() + "]");
error.initCause(firstReleaseStack);
throw error;
} else {
assert firstReleaseStack == null;
firstReleaseStack =
new RuntimeException(
"Searcher Released first here, source [" + wrappedSearcher.source() + "]");
}
}
final int refCount = wrappedSearcher.reader().getRefCount();
// this assert seems to be paranoid but given LUCENE-5362 we better add some assertions here
// to make sure we catch any potential
// problems.
assert refCount > 0
: "IndexReader#getRefCount() was ["
+ refCount
+ "] expected a value > [0] - reader is already closed. Initial refCount was: ["
+ initialRefCount
+ "]";
try {
wrappedSearcher.close();
} catch (RuntimeException ex) {
logger.debug("Failed to release searcher", ex);
throw ex;
}
}
private long loadCurrentVersionFromIndex(Term uid) throws IOException {
try (final Searcher searcher = acquireSearcher("load_version")) {
return Versions.loadVersion(searcher.reader(), uid);
}
}