/** * @param cancel {@code True} to close with cancellation. * @throws GridException If failed. */ @Override public void close(boolean cancel) throws GridException { if (!closed.compareAndSet(false, true)) return; busyLock.block(); if (log.isDebugEnabled()) log.debug("Closing data loader [ldr=" + this + ", cancel=" + cancel + ']'); GridException e = null; try { // Assuming that no methods are called on this loader after this method is called. if (cancel) { cancelled = true; for (Buffer buf : bufMappings.values()) buf.cancelAll(); } else doFlush(); ctx.event().removeLocalEventListener(discoLsnr); ctx.io().removeMessageListener(topic); } catch (GridException e0) { e = e0; } fut.onDone(null, e); if (e != null) throw e; }
/** * Flushes every internal buffer if buffer was flushed before passed in threshold. * * <p>Does not wait for result and does not fail on errors assuming that this method should be * called periodically. */ @Override public void tryFlush() throws GridInterruptedException { if (!busyLock.enterBusy()) return; try { for (Buffer buf : bufMappings.values()) buf.flush(); lastFlushTime = U.currentTimeMillis(); } finally { leaveBusy(); } }
/** * @param entries Entries. * @param resFut Result future. * @param activeKeys Active keys. * @param remaps Remaps count. */ private void load0( Collection<? extends Map.Entry<K, V>> entries, final GridFutureAdapter<Object> resFut, final Collection<K> activeKeys, final int remaps) { assert entries != null; if (remaps >= MAX_REMAP_CNT) { resFut.onDone(new GridException("Failed to finish operation (too many remaps): " + remaps)); return; } Map<GridNode, Collection<Map.Entry<K, V>>> mappings = new HashMap<>(); boolean initPda = ctx.deploy().enabled() && jobPda == null; for (Map.Entry<K, V> entry : entries) { GridNode node; try { K key = entry.getKey(); assert key != null; if (initPda) { jobPda = new DataLoaderPda(key, entry.getValue(), updater); initPda = false; } node = ctx.affinity().mapKeyToNode(cacheName, key); } catch (GridException e) { resFut.onDone(e); return; } if (node == null) { resFut.onDone( new GridTopologyException( "Failed to map key to node " + "(no nodes with cache found in topology) [infos=" + entries.size() + ", cacheName=" + cacheName + ']')); return; } Collection<Map.Entry<K, V>> col = mappings.get(node); if (col == null) mappings.put(node, col = new ArrayList<>()); col.add(entry); } for (final Map.Entry<GridNode, Collection<Map.Entry<K, V>>> e : mappings.entrySet()) { final UUID nodeId = e.getKey().id(); Buffer buf = bufMappings.get(nodeId); if (buf == null) { Buffer old = bufMappings.putIfAbsent(nodeId, buf = new Buffer(e.getKey())); if (old != null) buf = old; } final Collection<Map.Entry<K, V>> entriesForNode = e.getValue(); GridInClosure<GridFuture<?>> lsnr = new GridInClosure<GridFuture<?>>() { @Override public void apply(GridFuture<?> t) { try { t.get(); for (Map.Entry<K, V> e : entriesForNode) activeKeys.remove(e.getKey()); if (activeKeys.isEmpty()) resFut.onDone(); } catch (GridException e1) { if (log.isDebugEnabled()) log.debug("Future finished with error [nodeId=" + nodeId + ", err=" + e1 + ']'); if (cancelled) { resFut.onDone( new GridException( "Data loader has been cancelled: " + GridDataLoaderImpl.this, e1)); } else load0(entriesForNode, resFut, activeKeys, remaps + 1); } } }; GridFutureAdapter<?> f; try { f = buf.update(entriesForNode, lsnr); } catch (GridInterruptedException e1) { resFut.onDone(e1); return; } if (ctx.discovery().node(nodeId) == null) { if (bufMappings.remove(nodeId, buf)) buf.onNodeLeft(); if (f != null) f.onDone( new GridTopologyException( "Failed to wait for request completion " + "(node has left): " + nodeId)); } } }
/** * Performs flush. * * @throws GridException If failed. */ private void doFlush() throws GridException { lastFlushTime = U.currentTimeMillis(); List<GridFuture> activeFuts0 = null; int doneCnt = 0; for (GridFuture<?> f : activeFuts) { if (!f.isDone()) { if (activeFuts0 == null) activeFuts0 = new ArrayList<>((int) (activeFuts.size() * 1.2)); activeFuts0.add(f); } else { f.get(); doneCnt++; } } if (activeFuts0 == null || activeFuts0.isEmpty()) return; while (true) { Queue<GridFuture<?>> q = null; for (Buffer buf : bufMappings.values()) { GridFuture<?> flushFut = buf.flush(); if (flushFut != null) { if (q == null) q = new ArrayDeque<>(bufMappings.size() * 2); q.add(flushFut); } } if (q != null) { assert !q.isEmpty(); boolean err = false; for (GridFuture fut = q.poll(); fut != null; fut = q.poll()) { try { fut.get(); } catch (GridException e) { if (log.isDebugEnabled()) log.debug("Failed to flush buffer: " + e); err = true; } } if (err) // Remaps needed - flush buffers. continue; } doneCnt = 0; for (int i = 0; i < activeFuts0.size(); i++) { GridFuture f = activeFuts0.get(i); if (f == null) doneCnt++; else if (f.isDone()) { f.get(); doneCnt++; activeFuts0.set(i, null); } else break; } if (doneCnt == activeFuts0.size()) return; } }
void _reset(Buffer b) { b.position(0); b.limit(b.capacity()); }