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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.client; |
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package uk.org.iscream.cms.server.client; |
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import uk.org.iscream.cms.server.util.*; |
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import uk.org.iscream.cms.server.componentmanager.*; |
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/** |
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* The Register class holds theshold values, |
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* the last level of alert for each attribute for a monitor |
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* and the time of last alert sent for each alert level for |
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* each attribute in this register. |
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* and the time of last alert sent for each alert level. |
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* |
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* This class is used by monitor classes so they can determine |
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* how often they should send alerts when breaching alert levels. |
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/** |
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* Construct a Register with the hostname and monitorName |
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* (for obtaining the threshold values), and the number of |
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* attributes we are keeping track of. |
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* (for obtaining the threshold values). |
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* This constructs a generic register for a specific monitor. |
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* |
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* @param hostname the hostname this register is for |
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* @param monitorName the monitor this register is for |
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* @param numAttributes the number of attributes to track |
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*/ |
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public Register(String hostname, String monitorName, int numAttributes) { |
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public Register(String hostname, String monitorName) { |
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this(hostname, monitorName, null); |
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} |
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|
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/** |
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* Construct a Register with the hostname and monitorName |
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* (for obtaining the threshold values). |
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* This constructs a register for a specific attribute check |
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* by a monitor. |
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* |
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* @param hostname the hostname this register is for |
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* @param monitorName the monitor this register is for |
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* @param attributeName the specific attribute this register is for |
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*/ |
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public Register(String hostname, String monitorName, String attributeName) { |
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_hostname = hostname; |
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_monitorName = monitorName; |
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_lastAlertLevels = new int[numAttributes]; |
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_lastThresholdLevels = new int[numAttributes]; |
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_initialAlertTime = new long[numAttributes]; |
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_lastAlertTimeout = new long[numAttributes]; |
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_times = new long[numAttributes][Alert.alertLevels.length]; |
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_attributeName = attributeName; |
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_lastAlertLevel = 0; |
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_lastThresholdLevel = 0; |
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_initialAlertTime= 0; |
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_lastAlertTimeout = 0; |
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_times = new long[Alert.alertLevels.length]; |
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// initialise the arrays to 0 |
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for (int x = 0; x < _lastAlertLevels.length; x++) { |
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_lastAlertLevels[x] = 0; |
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_initialAlertTime[x] = 0; |
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_lastThresholdLevels[x] = 0; |
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_lastAlertTimeout[x] = 0; |
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for(int y = 0; y < Alert.alertLevels.length; y++) { |
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_times[x][y] = 0; |
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} |
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for(int x = 0; x < Alert.alertLevels.length; x++) { |
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_times[x] = 0; |
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} |
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} |
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//---PUBLIC METHODS--- |
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//---PRIVATE METHODS--- |
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/** |
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* Obtains a threshold value from the configuration for a given level. |
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* The attribute name specifies which property to get. |
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* eg, attributeName = idle it will look for |
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* Monitor.<monitor name>.idle.threshold.<alert level> |
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* eg, attributeName = null |
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* Monitor.<monitor name>.threshold.<alert level> |
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* |
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* Note that if its null, this will get the threshold for the monitor |
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* as a whole, not the specific attribute. |
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* |
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* @param level the alert level to get the attribute for |
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* @param attributeName the attribute to get the threshold for |
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* |
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* @return the threshold obtained |
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*/ |
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private String getThresholdConfig(int level, String attributeName) throws PropertyNotFoundException { |
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String temp = ""; |
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if (attributeName != null) { |
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temp = "." + attributeName; |
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} |
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return _cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + temp + ".threshold." + Alert.thresholdLevels[level]); |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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/** |
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* Gets the last alert level for the |
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* given attribute. |
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* Gets the last alert level |
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* |
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* @param attributeNum the attribute to get |
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* |
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* @return the last alert level |
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*/ |
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public int getLastAlertLevel(int attributeNum) { |
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return _lastAlertLevels[attributeNum]; |
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public int getLastAlertLevel() { |
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return _lastAlertLevel; |
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} |
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/** |
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* Sets the last threshold level for the |
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* given attribute. |
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* Sets the last threshold level |
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* |
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* @param attributeNum the attribute to set |
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* @param level the new last threshold level |
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*/ |
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public void setLastThresholdLevel(int attributeNum, int level) { |
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_lastThresholdLevels[attributeNum] = level; |
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public void setLastThresholdLevel(int level) { |
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_lastThresholdLevel = level; |
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} |
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|
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/** |
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* Gets the last threshold level for the |
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* given attribute. |
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/** |
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* Gets the last threshold level |
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* |
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* @param attributeNum the attribute to get |
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* |
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* @return the last threshold level |
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*/ |
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public int getLastThresholdLevel(int attributeNum) { |
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return _lastThresholdLevels[attributeNum]; |
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public int getLastThresholdLevel() { |
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return _lastThresholdLevel; |
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} |
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/** |
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* Sets the last alert level for the |
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* given attribute. |
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* Sets the last alert level |
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* |
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* Note that if this is setting to an OK |
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* level alert, it resets _maxLevelCount. |
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* if the next alert after OK is set. |
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* And resets it to 0 if it IS an OK. |
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* |
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* @param attributeNum the attribute to set |
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* @param level the new last alert level |
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*/ |
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public void setLastAlertLevel(int attributeNum, int level) { |
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_lastAlertLevels[attributeNum] = level; |
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public void setLastAlertLevel(int level) { |
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_lastAlertLevel = level; |
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if (level == Alert.alertOK) { |
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_maxLevelCount = 0; |
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_initialAlertTime[attributeNum] = 0; |
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// we won't do this, so OK's still have the initialAlertTime |
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// of the original alert they're OK'ing |
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//_initialAlertTime = 0; |
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} |
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if (level == Alert.alertOK + 1) { |
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_initialAlertTime[attributeNum] = System.currentTimeMillis(); |
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_initialAlertTime = System.currentTimeMillis(); |
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} |
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} |
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/** |
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* Gets the time an alert was sent for the |
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* given attribute at the given level. |
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* Gets the time an alert was sent at the given level. |
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* |
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* @param attributeNum the attribute to get |
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* @param level the alert level to get |
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* |
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* @return the time last sent |
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*/ |
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public long getTimeLastSent(int attributeNum) { |
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return _times[attributeNum][getLastAlertLevel(attributeNum)]; |
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public long getTimeLastSent() { |
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return _times[getLastAlertLevel()]; |
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} |
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/** |
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* Gets the time an alert was sent for the |
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* given attribute at the given level. |
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* Gets the time an alert was sent at the given level. |
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* |
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* @param attributeNum the attribute to get |
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* @param level the alert level to get |
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* @param value the new time |
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*/ |
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public void setTimeLastSent(int attributeNum, long value) { |
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_times[attributeNum][getLastAlertLevel(attributeNum)] = value; |
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public void setTimeLastSent(long value) { |
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_times[getLastAlertLevel()] = value; |
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} |
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/** |
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// -1.0 means we don't use an alert level |
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double threshold = -1.0; |
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try { |
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String thresholdString = _cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + ".threshold." + Alert.thresholdLevels[level]); |
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String thresholdString = ""; |
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try { |
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thresholdString = getThresholdConfig(level, _attributeName); |
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} catch (PropertyNotFoundException e) { |
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thresholdString = getThresholdConfig(level, null); |
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} |
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threshold = Double.parseDouble(thresholdString); |
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} catch (PropertyNotFoundException e) { |
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threshold = -1.0; |
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* and is converted from the value in the config, |
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* which should be seconds. |
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* |
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* Note that if the alert timeout for the current monitor |
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* is not configured, it will try to obtain the default |
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* timeout for all Monitor's. If there is no alert timeout |
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* for either the monitor or a default setting this returns 0. |
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* |
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* Note that this is dependant on the threshold value |
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* given, the timeout is obatined from the config, then |
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* divided by the threshold value, this allows alerts to |
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* progress faster should a higher threshold value be passed |
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* |
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* If there is no alert timeout for a |
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* given level, this returns 0 |
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* |
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* @param level the alert level |
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* @param thresholdLevel the threshold leve we are on |
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*/ |
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public long getAlertTimeout(int level, int attributeNum) { |
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public long getAlertTimeout(int level) { |
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// 0 means we don't use this value |
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long timeout = 0; |
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try { |
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String timeoutString = _cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + ".alertTimeout." + Alert.alertLevels[level]); |
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int threshold = getLastThresholdLevel(attributeNum); |
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String timeoutString; |
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try { |
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timeoutString = _cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + ".alertTimeout." + Alert.alertLevels[level]); |
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} catch (PropertyNotFoundException e) { |
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// if there is no timeout for the monitor |
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// check for a default |
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timeoutString = _cp.getProperty("Host." + _hostname, "Monitor.alertTimeout." + Alert.alertLevels[level]); |
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} |
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int threshold = getLastThresholdLevel(); |
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if (threshold > 0) { |
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timeout = (Long.parseLong(timeoutString) / threshold) * 1000; |
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} |
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* in the list, this is assumed to be FINAL, and special |
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* logic is in place to handle that. |
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* |
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* @param attributeNum the attribute to get next alert for |
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*/ |
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public int getNextAlertLevel(int attributeNum) { |
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if((getLastAlertLevel(attributeNum) + 1) > (Alert.alertLevels.length - 2)) { |
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return getLastAlertLevel(attributeNum); |
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public int getNextAlertLevel() { |
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if((getLastAlertLevel() + 1) > (Alert.alertLevels.length - 2)) { |
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return getLastAlertLevel(); |
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} |
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return getLastAlertLevel(attributeNum) + 1; |
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return getLastAlertLevel() + 1; |
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} |
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|
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/** |
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* Gets the timeout value of the last alert |
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* sent |
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* |
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* @param attrubuteNum the attribute to get the last timeout for |
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* @return the last timeout value |
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*/ |
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public long getLastAlertTimeout(int attributeNum) { |
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return _lastAlertTimeout[attributeNum]; |
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> |
public long getLastAlertTimeout() { |
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return _lastAlertTimeout; |
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} |
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|
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/** |
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* Sets the timeout value of the last alert |
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* sent |
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* |
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* @param attrubuteNum the attribute to get the last timeout for |
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* @param timeout the new value |
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*/ |
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public void setLastAlertTimeout(int attributeNum, long timeout) { |
280 |
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_lastAlertTimeout[attributeNum] = timeout; |
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> |
public void setLastAlertTimeout(long timeout) { |
280 |
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_lastAlertTimeout = timeout; |
281 |
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} |
282 |
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|
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/** |
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* Returns the time that the first alert was sent |
285 |
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* for an attribute that has passed a threshold value |
286 |
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* |
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* @param attrubuteNum the attribute to get the first alert time for |
287 |
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*/ |
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public long getInitialAlertTime(int attributeNum) { |
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return _initialAlertTime[attributeNum]; |
288 |
> |
public long getInitialAlertTime() { |
289 |
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return _initialAlertTime; |
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} |
291 |
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|
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/** |
308 |
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* is mis-read or is not configured. It will NEVER reach |
309 |
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* a FINAL. |
310 |
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* |
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* @param attributeNum the attribute to advance the alert for |
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*/ |
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public void escalateAlert(int attributeNum) { |
312 |
> |
public void escalateAlert() { |
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// don't escalate if we're already on the last alert |
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if(getLastAlertLevel(attributeNum) != Alert.alertLevels.length -1) { |
315 |
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setLastAlertLevel(attributeNum, getNextAlertLevel(attributeNum)); |
314 |
> |
if(getLastAlertLevel() != Alert.alertLevels.length -1) { |
315 |
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setLastAlertLevel(getNextAlertLevel()); |
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} |
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try { |
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// note if we fail to get this value, we won't process the res of this |
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int reachFINALcount = Integer.parseInt(_cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + ".reachFINALcount")); |
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if (getLastAlertLevel(attributeNum) == Alert.alertLevels.length - 2) { |
320 |
> |
if (getLastAlertLevel() == Alert.alertLevels.length - 2) { |
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_maxLevelCount++; |
322 |
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if(_maxLevelCount >= reachFINALcount) { |
323 |
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setLastAlertLevel(attributeNum, Alert.alertFINAL); |
322 |
> |
if(_maxLevelCount > reachFINALcount) { |
323 |
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setLastAlertLevel(Alert.alertFINAL); |
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} |
325 |
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} |
326 |
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} catch (PropertyNotFoundException e) { |
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* The monitor this register is for |
342 |
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*/ |
343 |
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private String _monitorName; |
344 |
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|
345 |
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/** |
346 |
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* The attribute name, as obtained from |
347 |
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* the configuration. |
348 |
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* eg, idle or /var |
349 |
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*/ |
350 |
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private String _attributeName; |
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|
352 |
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/** |
353 |
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* An array of last alert levels for |
354 |
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* each attribute this register is looking |
355 |
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* after. |
356 |
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*/ |
357 |
< |
private int[] _lastAlertLevels; |
357 |
> |
private int _lastAlertLevel; |
358 |
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|
359 |
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/** |
360 |
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* An array of last threshold levels for |
361 |
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* each attribute this register is looking |
362 |
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* after. |
363 |
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*/ |
364 |
< |
private int[] _lastThresholdLevels; |
364 |
> |
private int _lastThresholdLevel; |
365 |
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|
366 |
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/** |
367 |
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* An array of last alert timeout levels for |
368 |
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* each attribute this register is looking |
369 |
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* after. |
370 |
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*/ |
371 |
< |
private long[] _lastAlertTimeout; |
371 |
> |
private long _lastAlertTimeout; |
372 |
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|
373 |
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/** |
374 |
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* An array of arrays containing |
375 |
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* time an alert of each level |
376 |
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* was last sent for each attribute. |
377 |
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*/ |
378 |
< |
private long[][] _times; |
378 |
> |
private long[] _times; |
379 |
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|
380 |
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/** |
381 |
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* Initial times that an alert was first |
382 |
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* raised. |
383 |
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*/ |
384 |
< |
private long[] _initialAlertTime; |
384 |
> |
private long _initialAlertTime; |
385 |
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|
386 |
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/** |
387 |
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* A reference to the configuration proxy in use |