ptupitsyn commented on code in PR #2128: URL: https://github.com/apache/ignite-3/pull/2128#discussion_r1213245158
########## modules/client/src/main/java/org/apache/ignite/internal/client/table/StreamerBuffer.java: ########## @@ -0,0 +1,98 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.ignite.internal.client.table; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CompletableFuture; +import java.util.function.Function; + +class StreamerBuffer<T> { + private final int capacity; + + private final Function<List<T>, CompletableFuture<Void>> flusher; + + /** Primary buffer. Won't grow over capacity. */ + private List<T> buf; + + private CompletableFuture<Void> flushFut; + + private boolean closed; + + private long lastFlushTime; + + StreamerBuffer(int capacity, Function<List<T>, CompletableFuture<Void>> flusher) { + this.capacity = capacity; + this.flusher = flusher; + buf = new ArrayList<>(capacity); + } + + /** + * Adds item to the buffer. + * + * @param item Item. + */ + synchronized void add(T item) { + if (closed) { + throw new IllegalStateException("Streamer is closed, can't add items."); + } + + buf.add(item); + + if (buf.size() >= capacity) { + flush(buf); + buf = new ArrayList<>(capacity); + } + } + + synchronized CompletableFuture<Void> flushAndClose() { + if (closed) { + throw new IllegalStateException("Streamer is already closed."); + } + + closed = true; + + if (!buf.isEmpty()) { + flush(buf); + } + + return flushFut == null ? CompletableFuture.completedFuture(null) : flushFut; + } + + synchronized void flush(long period) { + if (closed || buf.isEmpty()) { + return; + } + + if (System.currentTimeMillis() - lastFlushTime > period) { Review Comment: Very good catch. Replaced with `nanoTime`. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
