serverhitbin.java

Sequoia ERP是一个真正的企业级开源ERP解决方案。它提供的模块包括：电子商务应用(e-commerce), POS系统(point of sales),知识管理,存货与仓库管理

    GenericDelegator delegator;
    String delegatorName;
    String id;
    int type;
    boolean limitLength;
    long startTime;
    long endTime;
    long numberHits;
    long totalRunningTime;
    long minTime;
    long maxTime;

    public ServerHitBin(String id, int type, boolean limitLength, GenericDelegator delegator) {
        super();
        if (delegator == null) {
            throw new IllegalArgumentException("The delgator passed to countHitSinceStart cannot be null");
        }

        this.id = id;
        this.type = type;
        this.limitLength = limitLength;
        this.delegator = delegator;
        this.delegatorName = delegator.getDelegatorName();
        reset(getEvenStartingTime());
    }

    public GenericDelegator getDelegator() {
        if (this.delegator == null) {
            this.delegator = GenericDelegator.getGenericDelegator(this.delegatorName);
        }
        // if still null, then we have a problem
        if (this.delegator == null) {
            throw new IllegalArgumentException("Could not perform stats operation: could not find delegator with name: " + this.delegatorName);
        }
        return this.delegator;
    }

    long getEvenStartingTime() {
        // binLengths should be a divisable evenly into 1 hour
        long curTime = System.currentTimeMillis();
        long binLength = getNewBinLength();

        // find the first previous millis that are even on the hour
        Calendar cal = Calendar.getInstance();

        cal.setTime(new Date(curTime));
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);

        while (cal.getTime().getTime() < (curTime - binLength)) {
            cal.add(Calendar.MILLISECOND, (int) binLength);
        }

        return cal.getTime().getTime();
    }

    static long getNewBinLength() {
        long binLength = (long) UtilProperties.getPropertyNumber("serverstats", "stats.bin.length.millis");

        // if no or 0 binLength specified, set to 30 minutes
        if (binLength <= 0) binLength = 1800000;
        // if binLength is more than an hour, set it to one hour
        if (binLength > 3600000) binLength = 3600000;
        return binLength;
    }

    void reset(long startTime) {
        this.startTime = startTime;
        if (limitLength) {
            long binLength = getNewBinLength();

            // subtract 1 millisecond to keep bin starting times even
            this.endTime = startTime + binLength - 1;
        } else {
            this.endTime = 0;
        }
        this.numberHits = 0;
        this.totalRunningTime = 0;
        this.minTime = Long.MAX_VALUE;
        this.maxTime = 0;
    }

    ServerHitBin(ServerHitBin oldBin) {
        super();

        this.id = oldBin.id;
        this.type = oldBin.type;
        this.limitLength = oldBin.limitLength;
        this.delegator = oldBin.delegator;
        this.delegatorName = oldBin.delegatorName;
        this.startTime = oldBin.startTime;
        this.endTime = oldBin.endTime;
        this.numberHits = oldBin.numberHits;
        this.totalRunningTime = oldBin.totalRunningTime;
        this.minTime = oldBin.minTime;
        this.maxTime = oldBin.maxTime;
    }

    public String getId() {
        return this.id;
    }

    public int getType() {
        return this.type;
    }

    public String getTypeString() {
        return typeNames[this.type];
    }

    /** returns the startTime of the bin */
    public long getStartTime() {
        return this.startTime;
    }

    /** Returns the end time if the length of the bin is limited, otherwise returns the current system time */
    public long getEndTime() {
        return limitLength ? this.endTime : System.currentTimeMillis();
    }

    /** returns the startTime of the bin */
    public String getStartTimeString() {
        // using Timestamp toString because I like the way it formats it
        return new java.sql.Timestamp(this.getStartTime()).toString();
    }

    /** Returns the end time if the length of the bin is limited, otherwise returns the current system time */
    public String getEndTimeString() {
        return new java.sql.Timestamp(this.getEndTime()).toString();
    }

    /** returns endTime - startTime */
    public long getBinLength() {
        return this.getEndTime() - this.getStartTime();
    }

    /** returns (endTime - startTime)/60000 */
    public double getBinLengthMinutes() {
        return ((double) this.getBinLength()) / 60000.0;
    }

    public long getNumberHits() {
        return this.numberHits;
    }

    public long getTotalRunningTime() {
        return this.totalRunningTime;
    }

    public long getMinTime() {
        return this.minTime;
    }

    public double getMinTimeSeconds() {
        return ((double) this.minTime) / 1000.0;
    }

    public long getMaxTime() {
        return this.maxTime;
    }

    public double getMaxTimeSeconds() {
        return ((double) this.maxTime) / 1000.0;
    }

    public double getAvgTime() {
        return ((double) this.totalRunningTime) / ((double) this.numberHits);
    }

    public double getAvgTimeSeconds() {
        return this.getAvgTime() / 1000.0;
    }

    /** return the hits per minute using the entire length of the bin as returned by getBinLengthMinutes() */
    public double getHitsPerMinute() {
        return ((double) this.numberHits) / ((double) this.getBinLengthMinutes());
    }

    synchronized void addHit(long startTime, long runningTime) {
        advanceBin(startTime + runningTime);

        this.numberHits++;
        this.totalRunningTime += runningTime;
        if (runningTime < this.minTime)
            this.minTime = runningTime;
        if (runningTime > this.maxTime)
            this.maxTime = runningTime;
    }

    synchronized void advanceBin(long toTime) {
        // first check to see if this bin has expired, if so save and recycle it
        while (limitLength && toTime > this.endTime) {
            LinkedList binList = null;

            switch (type) {
            case REQUEST:
                binList = (LinkedList) requestHistory.get(id);
                break;

            case EVENT:
                binList = (LinkedList) eventHistory.get(id);
                break;

            case VIEW:
                binList = (LinkedList) viewHistory.get(id);
                break;

            case ENTITY:
                binList = (LinkedList) entityHistory.get(id);
                break;

            case SERVICE:
                binList = (LinkedList) serviceHistory.get(id);
                break;
            }

            // the first in the list will be this object, remove and copy it, 
            // put the copy at the first of the list, then put this object back on
            binList.removeFirst();
            if (this.numberHits > 0) {
                binList.addFirst(new ServerHitBin(this));

                // persist each bin when time ends if option turned on
                if (UtilProperties.propertyValueEqualsIgnoreCase("serverstats", "stats.persist." + ServerHitBin.typeIds[type] + ".bin", "true")) {
                    GenericValue serverHitBin = delegator.makeValue("ServerHitBin", null);
                    serverHitBin.set("serverHitBinId", getDelegator().getNextSeqId("ServerHitBin"));
                    serverHitBin.set("contentId", this.id);
                    serverHitBin.set("hitTypeId", ServerHitBin.typeIds[this.type]);
                    serverHitBin.set("binStartDateTime", new java.sql.Timestamp(this.startTime));
                    serverHitBin.set("binEndDateTime", new java.sql.Timestamp(this.endTime));
                    serverHitBin.set("numberHits", new Long(this.numberHits));
                    serverHitBin.set("totalTimeMillis", new Long(this.totalRunningTime));
                    serverHitBin.set("minTimeMillis", new Long(this.minTime));
                    serverHitBin.set("maxTimeMillis", new Long(this.maxTime));
                    // get localhost ip address and hostname to store
                    try {
                        InetAddress address = InetAddress.getLocalHost();

                        if (address != null) {
                            serverHitBin.set("serverIpAddress", address.getHostAddress());
                            serverHitBin.set("serverHostName", address.getHostName());
                        } else {
                            Debug.logError("Unable to get localhost internet address, was null", module);
                        }
                    } catch (java.net.UnknownHostException e) {
                        Debug.logError("Unable to get localhost internet address: " + e.toString(), module);
                    }
                    try {
                        serverHitBin.create();
                    } catch (GenericEntityException e) {
                        Debug.logError(e, "Could not save ServerHitBin:", module);
                    }
                }
            }
            this.reset(this.endTime + 1);
            binList.addFirst(this);
        }
    }

    void saveHit(HttpServletRequest request, long startTime, long runningTime, GenericValue userLogin) {
        // persist record of hit in ServerHit entity if option turned on
        if (UtilProperties.propertyValueEqualsIgnoreCase("serverstats", "stats.persist." + ServerHitBin.typeIds[type] + ".hit", "true")) {
            // if the hit type is ENTITY and the name contains "ServerHit" don't 
            // persist; avoids the infinite loop and a bunch of annoying data
            if (this.type == ENTITY && this.id.indexOf("ServerHit") > 0) {
                return;
            }

            // check for type data before running.
            GenericValue serverHitType = null;

            try {
                serverHitType = delegator.findByPrimaryKeyCache("ServerHitType", UtilMisc.toMap("hitTypeId", ServerHitBin.typeIds[this.type]));
            } catch (GenericEntityException e) {
                Debug.logError(e, module);
            }
            if (serverHitType == null) {
                // datamodel data not loaded; not storing hit.
                Debug.logWarning("The datamodel data has not been loaded; cannot find hitTypeId '" + ServerHitBin.typeIds[this.type] + " not storing ServerHit.", module);
                return;
            }

            String visitId = VisitHandler.getVisitId(request.getSession());

            if (visitId == null || visitId.length() == 0) {
                // no visit info stored, so don't store the ServerHit
                Debug.logWarning("Could not find a visitId, so not storing ServerHit. This is probably a configuration error. If you turn of persistance of visits you should also turn off persistence of hits.", module);
                return;
            }

            GenericValue serverHit = delegator.makeValue("ServerHit", null);

            serverHit.set("visitId", visitId);
            serverHit.set("hitStartDateTime", new java.sql.Timestamp(startTime));
            serverHit.set("hitTypeId", ServerHitBin.typeIds[this.type]);
            if (userLogin != null) {
                serverHit.set("userLoginId", userLogin.get("userLoginId"));
                serverHit.set("partyId", userLogin.get("partyId"));
            }
            serverHit.set("contentId", this.id);
            serverHit.set("runningTimeMillis", new Long(runningTime));

            String fullRequestUrl = UtilHttp.getFullRequestUrl(request).toString();

            serverHit.set("requestUrl", fullRequestUrl.length() > 250 ? fullRequestUrl.substring(0, 250) : fullRequestUrl);
            String referrerUrl = request.getHeader("Referer") != null ? request.getHeader("Referer") : "";

            serverHit.set("referrerUrl", referrerUrl.length() > 250 ? referrerUrl.substring(0, 250) : referrerUrl);

            // get localhost ip address and hostname to store
            try {
                InetAddress address = InetAddress.getLocalHost();

                if (address != null) {
                    serverHit.set("serverIpAddress", address.getHostAddress());
                    serverHit.set("serverHostName", address.getHostName());
                } else {
                    Debug.logError("Unable to get localhost internet address, was null", module);
                }
            } catch (java.net.UnknownHostException e) {
                Debug.logError("Unable to get localhost internet address: " + e.toString(), module);
            }

            try {
                serverHit.create();
            } catch (GenericEntityException e) {
                Debug.logError(e, "Could not save ServerHit:", module);
            }
        }
    }
}