Example usage for com.google.common.collect MapMaker MapMaker

Introduction

In this page you can find the example usage for com.google.common.collect MapMaker MapMaker.

Prototype

public MapMaker() 

Source Link

Usage

From source file:io.warp10.standalone.StandaloneMemoryStore.java

public StandaloneMemoryStore(KeyStore keystore, long timespan, long highwatermark, long lowwatermark) {
    this.keystore = keystore;
    this.aesKey = this.keystore.getKey(KeyStore.AES_LEVELDB_DATA);
    //this.series = new ConcurrentHashMap<BigInteger,GTSEncoder>();
    this.series = new MapMaker().concurrencyLevel(64).makeMap();
    this.timespan = timespan;
    this.highwatermark = highwatermark;
    this.lowwatermark = lowwatermark;

    ///*from   w  w  w .  ja  va  2 s . com*/
    // Add a shutdown hook to dump the memory store on exit
    //

    if (null != WarpConfig.getProperties().getProperty(STANDALONE_MEMORY_STORE_DUMP)) {

        final StandaloneMemoryStore self = this;
        final String path = WarpConfig.getProperties().getProperty(STANDALONE_MEMORY_STORE_DUMP);
        Thread dumphook = new Thread() {
            @Override
            public void run() {
                try {
                    self.dump(path);
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                    throw new RuntimeException(ioe);
                }
            }
        };

        Runtime.getRuntime().addShutdownHook(dumphook);

        //
        // Make sure ShutdownHookManager is initialized, otherwise it will try to
        // register a shutdown hook during the shutdown hook we just registered...
        //

        ShutdownHookManager.get();
    }

    this.setDaemon(true);
    this.setName("[StandaloneMemoryStore Janitor]");
    this.setPriority(Thread.MIN_PRIORITY);
    this.start();
}

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From source file:com.toro.torod.cursors.DefaultInnerCursorManager.java

/**
 * Created for test purpose.//from  ww w  . j  a  v a  2  s .co  m
 * @param config
 * @param sessionTransaction
 * @param ticker 
 */
protected DefaultInnerCursorManager(TorodConfig config, DbWrapper dbWrapper, Ticker ticker) {
    this.actualTimeout = config.getDefaultCursorTimeout();
    this.removalListener = new MyRemovalListener();
    this.ticker = ticker;
    this.dbWrapper = dbWrapper;

    withoutTimeout = new MapMaker().makeMap();
    withTimeout = createCache(actualTimeout);
    oldCaches = Collections.newSetFromMap(new MapMaker().<Cache<CursorId, CursorProperties>, Boolean>makeMap());

    readElementMap = new MapMaker().makeMap();

    cursorIdProvider = new AtomicLong(FIRST_CURSOR_ID);
}

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From source file:me.schiz.jmeter.ring.udp.Ring.java

public Ring init() {
    hashedWheelTimer = new HashedWheelTimer();
    eventLoopRunnables = new EventLoopRunnable[THREADS];
    for (int i = 0; i < selectorsCount; ++i) {
        eventLoopRunnables[i] = new EventLoopRunnable(this);
        threads[i] = new Thread(eventLoopRunnables[i]);
        threads[i].setDaemon(true);/*from w  w w  .j av a2  s.co  m*/
        threads[i].setName("EventLoopThread#" + i);
    }

    weakSocketToTokenMap = new MapMaker().concurrencyLevel(Runtime.getRuntime().availableProcessors())
            .initialCapacity(capacity).softKeys().makeMap();

    for (int i = 0; i < capacity; i++) {
        String[] addr;
        String host = "localhost";
        int port;
        try {
            addr = addrs[i % addrs.length].split(":");
            host = addr[0];
            port = Integer.parseInt(addr[1]);
        } catch (PatternSyntaxException | NumberFormatException e) {
            log.error("bad address \"" + addrs[i % addrs.length] + "\"", e);
            return this;
        }
        try {
            Token t = ring.get(i);
            t.id = i;
            t.targetAddress = new InetSocketAddress(host, port);
            setSocketOptions(t.datagramChannel);
            try {
                eventLoopRunnables[i % selectorsCount].register(t.datagramChannel, SelectionKey.OP_READ);
            } catch (InterruptedException e) {
                log.error("InterruptedException when register SocketChannel", e);
                break;
            }
            ring.get(i).datagramChannel.connect(ring.get(i).targetAddress);
            weakSocketToTokenMap.putIfAbsent(t.datagramChannel, t);
        } catch (IOException e) {
            log.error("IOException ", e);
        }
    }

    for (int i = 0; i < selectorsCount; i++)
        threads[i].start();

    //schedEx.scheduleWithFixedDelay(new RingInfoRunnable(this), 0, 1000, TimeUnit.MILLISECONDS);

    return this;
}

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From source file:com.ardor3d.bounding.CollisionTreeManager.java

/**
 * private constructor for the Singleton. Initializes the cache.
 *///from   www .jav  a  2  s . c  o  m
private CollisionTreeManager() {
    _cache = new MapMaker().weakKeys().makeMap();
    _protectedList = Collections.synchronizedList(new ArrayList<Mesh>(1));
    setCollisionTreeController(new UsageTreeController());
}

---

From source file:org.obm.servlet.filter.qos.handlers.TransactionalKeyRequestsInfoStore.java

@Inject
@VisibleForTesting
TransactionalKeyRequestsInfoStore() {
    references = Sets.newConcurrentHashSet();
    map = new MapMaker().weakValues().makeMap();
    count = new AtomicInteger();
}

---

From source file:io.druid.query.aggregation.atomcube.AtomCubeQueryResource.java

@POST
@Produces({ MediaType.APPLICATION_JSON, SmileMediaTypes.APPLICATION_JACKSON_SMILE })
@Consumes({ MediaType.APPLICATION_JSON, SmileMediaTypes.APPLICATION_JACKSON_SMILE, APPLICATION_SMILE })
public Response doPost(InputStream in, @QueryParam("pretty") String pretty,
        @Context final HttpServletRequest req // used only to get request content-type and remote address
) throws IOException {
    final long start = System.currentTimeMillis();
    final String reqContentType = req.getContentType();
    final boolean isSmile = SmileMediaTypes.APPLICATION_JACKSON_SMILE.equals(reqContentType)
            || APPLICATION_SMILE.equals(reqContentType);
    ObjectMapper objectMapper = isSmile ? smileMapper : jsonMapper;
    final String contentType = isSmile ? SmileMediaTypes.APPLICATION_JACKSON_SMILE : MediaType.APPLICATION_JSON;
    final ObjectWriter jsonWriter = pretty != null ? objectMapper.writerWithDefaultPrettyPrinter()
            : objectMapper.writer();/*from   w  w  w.  ja v  a2 s  .  co  m*/

    AtomCubeQuery _query = objectMapper.readValue(in, AtomCubeQuery.class);
    final AtomCubeQuery atomQ = (AtomCubeQuery) _query.withId(UUID.randomUUID().toString());
    final Map<String, Object> responseContext1 = new MapMaker().makeMap();
    Sequence res = atomQ.run(this.conglomerate.findFactory(atomQ).createRunner(null), responseContext1);
    final Sequence results;
    if (res == null) {
        results = Sequences.empty();
    } else {
        results = res;
    }

    final Yielder yielder = results.toYielder(null, new YieldingAccumulator() {
        @Override
        public Object accumulate(Object accumulated, Object in) {
            yield();
            return in;
        }
    });

    final Map<String, Object> responseContext = new MapMaker().makeMap();
    Response.ResponseBuilder builder = Response.ok(new StreamingOutput() {
        @Override
        public void write(OutputStream outputStream) throws IOException, WebApplicationException {
            CountingOutputStream os = new CountingOutputStream(outputStream);
            jsonWriter.writeValue(os, yielder);

            os.flush();
            os.close();

            final long queryTime = System.currentTimeMillis() - start;
            emitter.emit(DruidMetrics.makeQueryTimeMetric(null, jsonMapper, atomQ, req.getRemoteAddr())
                    .setDimension("success", "true").build("query/time", queryTime));
            emitter.emit(DruidMetrics.makeQueryTimeMetric(null, jsonMapper, atomQ, req.getRemoteAddr())
                    .build("query/bytes", os.getCount()));

            requestLogger.log(new RequestLogLine(new DateTime(), req.getRemoteAddr(), atomQ,
                    new QueryStats(ImmutableMap.<String, Object>of("query/time", queryTime, "query/bytes",
                            os.getCount(), "success", true))));
        }
    }, contentType).header("X-Druid-Query-Id", atomQ.getId());

    String responseCtxString = jsonMapper.writeValueAsString(responseContext);

    return builder.header("X-Druid-Response-Context", responseCtxString).build();
}

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From source file:com.alibaba.otter.node.common.config.impl.ConfigClientServiceImpl.java

public void afterPropertiesSet() throws Exception {
    // ?nid??/*from www .java  2s .c  o m*/
    String nid = System.getProperty(NID_NAME);
    if (StringUtils.isEmpty(nid)) {
        throw new ConfigException("nid is not set!");
    }

    this.nid = Long.valueOf(nid);

    channelMapping = new MapMaker().makeComputingMap(new Function<Long, Long>() {

        public Long apply(Long pipelineId) {
            // ?pipline -> channel?
            FindChannelEvent event = new FindChannelEvent();
            event.setPipelineId(pipelineId);
            try {
                Object obj = nodeCommmunicationClient.callManager(event);
                if (obj != null && obj instanceof Channel) {
                    Channel channel = (Channel) obj;
                    updateMapping(channel, pipelineId);// 
                    channelCache.put(channel.getId(), channel);// channelCache
                    return channel.getId();
                }
            } catch (Exception e) {
                logger.error("call_manager_error", event.toString(), e);
            }

            throw new ConfigException("No Such Channel by pipelineId[" + pipelineId + "]");
        }
    });

    nodeCache = new RefreshMemoryMirror<Long, Node>(timeout, new ComputeFunction<Long, Node>() {

        public Node apply(Long key, Node oldValue) {
            FindNodeEvent event = new FindNodeEvent();
            event.setNid(key);
            try {
                Object obj = nodeCommmunicationClient.callManager(event);
                if (obj != null && obj instanceof Node) {
                    return (Node) obj;
                } else {
                    throw new ConfigException("No Such Node by id[" + key + "]");
                }
            } catch (Exception e) {
                logger.error("call_manager_error", event.toString(), e);
            }
            // 
            return oldValue;
        }
    });

    channelCache = new RefreshMemoryMirror<Long, Channel>(timeout, new ComputeFunction<Long, Channel>() {

        public Channel apply(Long key, Channel oldValue) {
            FindChannelEvent event = new FindChannelEvent();
            event.setChannelId(key);
            try {
                Object obj = nodeCommmunicationClient.callManager(event);
                if (obj != null && obj instanceof Channel) {
                    updateMapping((Channel) obj, null);// 
                    return (Channel) obj;
                } else {
                    throw new ConfigException("No Such Channel by pipelineId[" + key + "]");
                }
            } catch (Exception e) {
                logger.error("call_manager_error", event.toString(), e);
            }
            // 
            return oldValue;
        }
    });
}

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From source file:com.google.devtools.build.lib.actions.cache.PersistentStringIndexer.java

private static <K, V> ConcurrentMap<K, V> newConcurrentMap(int expectedCapacity) {
    return new MapMaker().initialCapacity(expectedCapacity).makeMap();
}

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From source file:com.analog.lyric.dimple.events.DimpleEventListener.java

/**
 * Constructs a new empty event listener.
 *//*from   w  w  w .j a  v  a  2 s  . c  o  m*/
public DimpleEventListener() {
    // We use ConcurrentMap so that readers don't have to lock it, but force updates to be single
    // threaded with a lock this so the concurrency level is set to one to minimize overhead.
    // Use weak keys to prevent listener from keeping event sources in memory if no one else is using them.
    _handlersForSource = new MapMaker().concurrencyLevel(1).weakKeys().makeMap();
}

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From source file:org.apache.hadoop.hive.ql.exec.StatsNoJobTask.java

@Override
public int execute(DriverContext driverContext) {

    LOG.info("Executing stats (no job) task");

    String tableName = "";
    ExecutorService threadPool = null;
    Hive db = getHive();/*from   w  w  w . j  a v a  2s . c  om*/
    try {
        tableName = work.getTableSpecs().tableName;
        table = db.getTable(tableName);
        int numThreads = HiveConf.getIntVar(conf, ConfVars.HIVE_STATS_GATHER_NUM_THREADS);
        tableFullName = table.getDbName() + "." + table.getTableName();
        threadPool = Executors.newFixedThreadPool(numThreads,
                new ThreadFactoryBuilder().setDaemon(true).setNameFormat("StatsNoJobTask-Thread-%d").build());
        partUpdates = new MapMaker().concurrencyLevel(numThreads).makeMap();
        LOG.info("Initialized threadpool for stats computation with " + numThreads + " threads");
    } catch (HiveException e) {
        LOG.error("Cannot get table " + tableName, e);
        console.printError("Cannot get table " + tableName, e.toString());
    }

    return aggregateStats(threadPool, db);
}

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