Examples with ItemState com.icodici.universa.node.ItemState used on opensource projects

Example 1 with ItemState

use of com.icodici.universa.node.ItemState in project universa by UniversaBlockchain.

the class Client method getState.

public ItemResult getState(HashId itemId, Reporter reporter) throws ClientError {
    final ExecutorService pool = Executors.newCachedThreadPool();
    final List<ErrorRecord> errors = new ArrayList<>();
    final AsyncEvent<Void> consensusFound = new AsyncEvent<>();
    final int checkConsensus = getNodes().size() / 3;
    final AtomicInteger nodesLeft = new AtomicInteger(nodes.size());
    return protect(() -> {
        final Map<ItemState, List<ItemResult>> states = new HashMap<>();
        for (int i = 0; i < nodes.size(); i++) {
            final int nn = i;
            pool.submit(() -> {
                for (int retry = 0; retry < 5; retry++) {
                    // reporter.verbose("trying "+reporter+" for node "+nn);
                    try {
                        Client c = getClient(nn);
                        ItemResult r = c.command("getState", "itemId", itemId).getOrThrow("itemResult");
                        r.meta.put("url", c.getNodeNumber());
                        synchronized (states) {
                            List<ItemResult> list = states.get(r.state);
                            if (list == null) {
                                list = new ArrayList();
                                states.put(r.state, list);
                            }
                            list.add(r);
                            if (r.errors.size() > 0)
                                reporter.warning("errors from " + c.getNodeNumber() + ": " + r.errors);
                            break;
                        }
                    } catch (IOException e) {
                    // reporter.warning("can't get answer from node " + nn + ", retry #" + retry + ": " + e);
                    }
                }
                // Now we should check the consensus
                states.forEach((itemState, itemResults) -> {
                    if (itemResults.size() >= checkConsensus)
                        if (itemResults.size() >= checkConsensus) {
                            consensusFound.fire();
                            return;
                        }
                });
                if (nodesLeft.decrementAndGet() < 1)
                    consensusFound.fire();
            });
        }
        consensusFound.await(5000);
        pool.shutdownNow();
        final ItemResult[] consensus = new ItemResult[1];
        states.forEach((itemState, itemResults) -> {
            if (itemResults.size() >= checkConsensus)
                consensus[0] = itemResults.get(0);
        });
        if (consensus[0] != null)
            reporter.message("State consensus found:" + consensus[0]);
        else {
            reporter.warning("no consensus found " + states.size());
        }
        if (states.size() > 1) {
            states.entrySet().stream().sorted(Comparator.comparingInt(o -> o.getValue().size())).forEach(kv -> {
                List<ItemResult> itemResults = kv.getValue();
                reporter.message("" + kv.getKey() + ": " + itemResults.size() + ": " + itemResults.stream().map(x -> x.meta.getStringOrThrow("url")).collect(Collectors.toSet()));
            });
        }
        return consensus[0];
    });
}

Example 2 with ItemState

use of com.icodici.universa.node.ItemState in project universa by UniversaBlockchain.

the class ItemResyncNotification method readFrom.

@Override
protected void readFrom(Boss.Reader br) throws IOException {
    super.readFrom(br);
    Map<String, Object> packingMap = br.readMap();
    for (String s : packingMap.keySet()) {
        HashId hid = HashId.withDigest(s);
        ItemState state = ItemState.values()[(int) packingMap.get(s)];
        itemsToResync.put(hid, state);
    }
}