Example usage for java.util.concurrent ConcurrentMap get

Introduction

In this page you can find the example usage for java.util.concurrent ConcurrentMap get.

Prototype

V get(Object key);

Source Link

Document

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

Usage

From source file:org.jtalks.jcommune.plugin.auth.poulpe.service.PoulpeAuthService.java

private void addHeaderAttribute(ClientResource clientResource, String attrName, String attrValue) {
    ConcurrentMap<String, Object> attrs = clientResource.getRequest().getAttributes();
    Series<Header> headers = (Series<Header>) attrs.get(HeaderConstants.ATTRIBUTE_HEADERS);
    if (headers == null) {
        headers = new Series<>(Header.class);
        Series<Header> prev = (Series<Header>) attrs.putIfAbsent(HeaderConstants.ATTRIBUTE_HEADERS, headers);
        if (prev != null) {
            headers = prev;//from www.  j  a  v a 2  s. c o m
        }
    }
    headers.add(attrName, attrValue);
}

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From source file:org.apache.hadoop.metrics2.lib.MutableRatesWithAggregation.java

/**
 * Add a rate sample for a rate metric./*from  w  w w .j a  v  a  2 s  .c o m*/
 * @param name of the rate metric
 * @param elapsed time
 */
public void add(String name, long elapsed) {
    ConcurrentMap<String, ThreadSafeSampleStat> localStats = threadLocalMetricsMap.get();
    if (localStats == null) {
        localStats = new ConcurrentHashMap<>();
        threadLocalMetricsMap.set(localStats);
        weakReferenceQueue.add(new WeakReference<>(localStats));
    }
    ThreadSafeSampleStat stat = localStats.get(name);
    if (stat == null) {
        stat = new ThreadSafeSampleStat();
        localStats.put(name, stat);
    }
    stat.add(elapsed);
}

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From source file:org.slc.sli.ingestion.aspect.StageTrackingAspect.java

private void trackCallStatistics(String statsKey, long elapsed) {
    String jobId = TenantContext.getJobId();
    if (jobId != null) {

        ConcurrentMap<String, Pair<AtomicLong, AtomicLong>> statsForJob = stats.get(jobId);
        if (statsForJob == null) {
            stats.putIfAbsent(jobId, new ConcurrentHashMap<String, Pair<AtomicLong, AtomicLong>>());
            statsForJob = stats.get(jobId);
        }/*ww w  .  j  a  va 2  s  .c o  m*/

        Pair<AtomicLong, AtomicLong> pair = statsForJob.get(statsKey);
        if (pair == null) {
            statsForJob.putIfAbsent(statsKey, Pair.of(new AtomicLong(0L), new AtomicLong(0L)));
            pair = statsForJob.get(statsKey);
        }

        // increment
        pair.getLeft().incrementAndGet();
        pair.getRight().addAndGet(elapsed);
    }
}

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From source file:cz.cuni.mff.ufal.AllBitstreamZipArchiveReader.java

/** Creates unique filename based on map of counters of already used filenames */
protected String createUniqueFilename(String filename, ConcurrentMap<String, AtomicInteger> usedFilenames) {
    String uniqueFilename = filename;
    usedFilenames.putIfAbsent(filename, new AtomicInteger(0));
    int occurence = usedFilenames.get(filename).incrementAndGet();
    if (occurence > 1) {
        uniqueFilename = addSuffixToFilename(filename, String.valueOf(occurence));
    }//ww  w  . j  av  a 2 s .  com
    return uniqueFilename;
}

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From source file:edu.illinois.cs.cogcomp.pipeline.server.ServerClientAnnotator.java

/**
 * The method is synchronized since the caching seems to have issues upon mult-threaded caching
 * @param overwrite if true, it would overwrite the values on cache
 *///from   w  w  w . j  a  v  a 2 s . c  o  m
public synchronized TextAnnotation annotate(String str, boolean overwrite) throws Exception {
    String viewsConnected = Arrays.toString(viewsToAdd);
    String views = viewsConnected.substring(1, viewsConnected.length() - 1).replace(" ", "");
    ConcurrentMap<String, byte[]> concurrentMap = (db != null)
            ? db.hashMap(viewName, Serializer.STRING, Serializer.BYTE_ARRAY).createOrOpen()
            : null;
    String key = DigestUtils.sha1Hex(str + views);
    if (!overwrite && concurrentMap != null && concurrentMap.containsKey(key)) {
        byte[] taByte = concurrentMap.get(key);
        return SerializationHelper.deserializeTextAnnotationFromBytes(taByte);
    } else {
        URL obj = new URL(url + ":" + port + "/annotate");
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        con.setRequestMethod("POST");
        con.setRequestProperty("charset", "utf-8");
        con.setRequestProperty("Content-Type", "text/plain; charset=utf-8");

        con.setDoOutput(true);
        con.setUseCaches(false);

        OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream());
        wr.write("text=" + URLEncoder.encode(str, "UTF-8") + "&views=" + views);
        wr.flush();

        InputStreamReader reader = new InputStreamReader(con.getInputStream());
        BufferedReader in = new BufferedReader(reader);
        String inputLine;
        StringBuilder response = new StringBuilder();
        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();
        reader.close();
        wr.close();
        con.disconnect();
        TextAnnotation ta = SerializationHelper.deserializeFromJson(response.toString());
        if (concurrentMap != null) {
            concurrentMap.put(key, SerializationHelper.serializeTextAnnotationToBytes(ta));
            this.db.commit();
        }
        return ta;
    }
}

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From source file:com.networknt.light.rule.AbstractRule.java

public Map<String, Object> getAccessByRuleClass(String ruleClass) throws Exception {
    Map<String, Object> access = null;
    Map<String, Object> accessMap = ServiceLocator.getInstance().getMemoryImage("accessMap");
    ConcurrentMap<Object, Object> cache = (ConcurrentMap<Object, Object>) accessMap.get("cache");
    if (cache == null) {
        cache = new ConcurrentLinkedHashMap.Builder<Object, Object>().maximumWeightedCapacity(1000).build();
        accessMap.put("cache", cache);
    } else {/*from   ww w. j a  va  2s .  co  m*/
        access = (Map<String, Object>) cache.get(ruleClass);
    }
    if (access == null) {
        OrientGraph graph = ServiceLocator.getInstance().getGraph();
        try {
            OrientVertex accessVertex = (OrientVertex) graph.getVertexByKey("Access.ruleClass", ruleClass);
            if (accessVertex != null) {
                String json = accessVertex.getRecord().toJSON();
                access = mapper.readValue(json, new TypeReference<HashMap<String, Object>>() {
                });
                cache.put(ruleClass, access);
            }
        } catch (Exception e) {
            logger.error("Exception:", e);
            throw e;
        } finally {
            graph.shutdown();
        }
    }
    return access;
}

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From source file:com.networknt.light.rule.menu.AbstractMenuRule.java

protected String getJsonByRid(String rid) {
    String json = null;/*  www .  j av  a  2 s .  c om*/
    Map<String, Object> menuMap = (Map<String, Object>) ServiceLocator.getInstance().getMemoryImage("menuMap");
    ConcurrentMap<Object, Object> cache = (ConcurrentMap<Object, Object>) menuMap.get("cache");
    if (cache != null) {
        json = (String) cache.get("rid");
    }
    if (json == null) {
        json = DbService.getJsonByRid(rid);
        // put it into the blog cache.
        if (json != null) {
            if (cache == null) {
                cache = new ConcurrentLinkedHashMap.Builder<Object, Object>().maximumWeightedCapacity(1000)
                        .build();
                menuMap.put("cache", cache);
            }
            cache.put(rid, json);
        }
    }
    return json;
}

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From source file:com.networknt.light.rule.menu.AbstractMenuRule.java

protected String getMenu(OrientGraph graph, String host) {
    String json = null;/*w ww.  j  av  a  2 s  . c o m*/
    Map<String, Object> menuMap = (Map<String, Object>) ServiceLocator.getInstance().getMemoryImage("menuMap");
    ConcurrentMap<Object, Object> cache = (ConcurrentMap<Object, Object>) menuMap.get("cache");
    if (cache != null) {
        json = (String) cache.get(host);
    }
    if (json == null) {
        Vertex menu = graph.getVertexByKey("Menu.host", host);
        if (menu != null) {
            json = ((OrientVertex) menu).getRecord().toJSON("rid,fetchPlan:out_Own.in_Create:-2 out_Own:2");
        }
        if (json != null) {
            if (cache == null) {
                cache = new ConcurrentLinkedHashMap.Builder<Object, Object>().maximumWeightedCapacity(1000)
                        .build();
                menuMap.put("cache", cache);
            }
            cache.put(host, json);
        }
    }
    return json;
}

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From source file:org.apache.hadoop.hbase.client.MetaCache.java

public void clearCache(final HRegionLocation location) {
    if (location == null) {
        return;//from  ww w  .j  a  v a 2s. c om
    }
    TableName tableName = location.getRegionInfo().getTable();
    ConcurrentMap<byte[], RegionLocations> tableLocations = getTableLocations(tableName);
    RegionLocations regionLocations = tableLocations.get(location.getRegionInfo().getStartKey());
    if (regionLocations != null) {
        RegionLocations updatedLocations = regionLocations.remove(location);
        boolean removed = false;
        if (updatedLocations != regionLocations) {
            if (updatedLocations.isEmpty()) {
                removed = tableLocations.remove(location.getRegionInfo().getStartKey(), regionLocations);
            } else {
                removed = tableLocations.replace(location.getRegionInfo().getStartKey(), regionLocations,
                        updatedLocations);
            }
            if (removed && LOG.isTraceEnabled()) {
                LOG.trace("Removed " + location + " from cache");
            }
        }
    }
}

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From source file:org.apache.hadoop.hbase.client.MetaCache.java

/**
 * Deletes the cached location of the region if necessary, based on some error from source.
 * @param hri The region in question./*from w  w w . j  ava2  s  .  c om*/
 */
public void clearCache(HRegionInfo hri) {
    ConcurrentMap<byte[], RegionLocations> tableLocations = getTableLocations(hri.getTable());
    RegionLocations regionLocations = tableLocations.get(hri.getStartKey());
    if (regionLocations != null) {
        HRegionLocation oldLocation = regionLocations.getRegionLocation(hri.getReplicaId());
        if (oldLocation == null)
            return;
        RegionLocations updatedLocations = regionLocations.remove(oldLocation);
        boolean removed = false;
        if (updatedLocations != regionLocations) {
            if (updatedLocations.isEmpty()) {
                removed = tableLocations.remove(hri.getStartKey(), regionLocations);
            } else {
                removed = tableLocations.replace(hri.getStartKey(), regionLocations, updatedLocations);
            }
            if (removed && LOG.isTraceEnabled()) {
                LOG.trace("Removed " + oldLocation + " from cache");
            }
        }
    }
}

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