The following documents have been referenced in this document.
*\[RD01\] ALMA ACS Basic* *Control* *Interface* *Specification{*}, M. Plesko, G. Tkacik, G. Chiozzi - ([http://www.eso.org/~gchiozzi/<ac:structured-macro ac:name="anchor" ac:schema-version="1" ac:macro-id="a99e0bb0-90fe-4e53-90b7-2a42cc1f3cd9"><ac:parameter ac:name="">_Hlt408496900</ac:parameter></ac:structured-macro>AlmaAcs/Releases/ACS_2_0_Docs/ACS_Basic_Control_Interface_Specification.pdf|http://www.eso.org/~gchiozzi/AlmaAcs/Releases/ACS_2_0_Docs/ACS_Basic_Control_Interface_Specification.pdf])
*\[RD02\] Adaptive Communications Environment (ACE) -* ([http://www.cs.wustl.<ac:structured-macro ac:name="anchor" ac:schema-version="1" ac:macro-id="b396a73a-7ba6-45d1-960d-fcffefc7e31f"><ac:parameter ac:name="">_Hlt408497061</ac:parameter></ac:structured-macro>edu/~schmidt/ACE-overview.html|http://www.cs.wustl.edu/~schmidt/ACE-overview.html])
*\[RD03\] OMG: CORBA Telecom Log Service Specification -{*}([ftp://ftp.omg.org/pub/docs/form<ac:structured-macro ac:name="anchor" ac:schema-version="1" ac:macro-id="5cd1f43a-ec5d-46fd-81fd-f0dde8920263"><ac:parameter ac:name="">_Hlt408497072</ac:parameter></ac:structured-macro>al/00-01-04.pdf|ftp://ftp.omg.org/pub/docs/formal/00-01-04.pdf])
*\[RD04\] ALMA Common Software Technical Requirements,* ALMA-TRE-ESO-XXXXX-XXXX, G.Raffi, B.Glendenning, Issue 1.0, 2000-06-05
*\[RD05\] ALMA Common Software Architecture,* G.Chiozzi, B.Gustafsson, B.Jeram *-* ([http://almaedm.tuc.nrao.edu<ac:structured-macro ac:name="anchor" ac:schema-version="1" ac:macro-id="3064770b-be38-46ce-8f41-fd8fc29b9d69"><ac:parameter ac:name="">_Hlt408497327</ac:parameter></ac:structured-macro>/forums/alma/dispatch.cgi/Architecture/docProfile/100017/d20021117183329/No/ALMASoftwareArchitecture.pdf|http://almaedm.tuc.nrao.edu/forums/alma/dispatch.cgi/Architecture/docProfile/100017/d20021117183329/No/ALMASoftwareArchitecture.pdf])
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*\[RD06\] OMG: Notification Service Specification -{*}([ftp://ftp.omg.org/pub/docs/formal/00-06-20.pdf|ftp://ftp.omg.org/pub/docs/formal/00-06-20.pdf])
*\[RD07\] Java Logging Overview -{*}([http://java.sun.com/j2se/1.4.1/docs/guide/util/logging/overview.html|http://java.sun.com/j2se/1.4.1/docs/guide/util/logging/overview.html])
*\[RD08\] ACS Online Documentation for schema files -{*}([To De Updated.html|http://java.sun.com/j2se/1.4.1/docs/guide/util/logging/overview.html])
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#./maciContainerLogStatsConfiguration
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 usage: ./maciContainerLogStatsConfiguration <container name> \{set,get,list\} <loggerName> \[-c \{Enable / Disable / Default\}\] \[-n <Element name>\] \[-p <Calculation period>\] \[-g <Granularity>\]
         \[OPTIONAL\]\[used only with SET command\] -c allows configure the statistics status for the logger.
                Default sets all logger statistics to default unless explicitly stated
         \[OPTIONAL\]\[used only with SET command\] -n allows configuration of the statistics logger module name
         \[OPTIONAL\]\[used only with SET command\] -p allows configuration of statistics calculation period (in seconds). Should be > 0
         \[OPTIONAL\]\[used only with SET command\] -g allows configuration of statistics granularity (in seconds). Should be > 0
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#./maciContainerLogStatsConfiguration bilboContainer list
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2015-06-02T14:37:15.862 Local file logger: Cache saved to '/alma/ACS-2015.4/acsdata/tmp/alma/ACS_INSTANCE.0/acs_local_log_maciContainerLogStatsConfiguration_26653'.
2015-06-02T14:37:15.876 \[GlobalLogger\] ManagerReference generated using localhost address: 'corbaloc::192.168.153.129:3000/Manager'
2015-06-02T14:37:15.916 \[GlobalLogger\] Container: bilboContainer
2015-06-02T14:37:15.925 \[GlobalLogger\]  Logger information:
2015-06-02T14:37:15.935 \[GlobalLogger\]          \[StatisticsIdentification\].\[LoggerName\] | \[Statistics status\] | \[Calculation period\] | \[Granularity\]
2015-06-02T14:37:15.945 \[GlobalLogger\]          Undefined.bilboContainer | statsDisabled | 600 | 1
2015-06-02T14:37:15.957 \[GlobalLogger\]          Undefined.bilboContainer-GL | statsDisabled | 600 | 1
2015-06-02T14:37:15.966 \[GlobalLogger\]          Undefined.bilboContainer-Static | statsDisabled | 600 | 1
2015-06-02T14:37:15.977 \[GlobalLogger\]          Undefined.maci::LibraryManager | statsDisabled | 600 | 1
2015-06-02T14:37:15.986 \[GlobalLogger\]          Undefined.Container-MethodRequestThreadPool | statsDisabled | 600 | 1
2015-06-02T14:37:15.997 \[GlobalLogger\]          Undefined.AlarmSourceThread | statsDisabled | 600 | 1
2015-06-02T14:37:16.006 \[GlobalLogger\]          Undefined.bilboContainer | statsDisabled | 600 | 1
2015-06-02T14:37:16.016 \[GlobalLogger\]          Undefined.CLOCK1 | statsDisabled | 600 | 1
2015-06-02T14:37:16.026 \[GlobalLogger\]          Undefined.CLOCK1::actionThread | statsDisabled | 600 | 1
2015-06-02T14:37:16.036 \[GlobalLogger\]          Undefined.CLOCK1::monitorThread | statsDisabled | 600 | 1
2015-06-02T14:37:16.049 \[GlobalLogger\]          Undefined.TIMER1 | statsDisabled | 600 | 1
2015-06-02T14:37:16.063 \[GlobalLogger\]          Undefined.MOUNT1 | statsDisabled | 600 | 1
2015-06-02T14:37:16.077 \[GlobalLogger\]          Undefined.MOUNT1::actionThread | statsDisabled | 600 | 1
2015-06-02T14:37:16.087 \[GlobalLogger\]          Undefined.MOUNT1::monitorThread | statsDisabled | 600 | 1
2015-06-02T14:37:16.097 \[GlobalLogger\]  ... done.
2015-06-02T14:37:16.107 \[GlobalLogger\] Done all.
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#./maciContainerLogStatsConfiguration bilboContainer get bilboContainer
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2015-06-02T14:50:14.273 Local file logger: Cache saved to '/alma/ACS-2015.4/acsdata/tmp/alma/ACS_INSTANCE.0/acs_local_log_maciContainerLogStatsConfiguration_26921'.
2015-06-02T14:50:14.290 \[GlobalLogger\] ManagerReference generated using localhost address: 'corbaloc::192.168.153.129:3000/Manager'
2015-06-02T14:50:14.360 \[GlobalLogger\] Container: bilboContainer
2015-06-02T14:50:14.381 \[GlobalLogger\]  Logger information 'bilboContainer':
2015-06-02T14:50:14.403 \[GlobalLogger\]          StatisticsIdentification      : Undefined
2015-06-02T14:50:14.420 \[GlobalLogger\]          LoggerName                    : bilboContainer
2015-06-02T14:50:14.443 \[GlobalLogger\]          Statistics status             : statsDisabled
2015-06-02T14:50:14.451 \[GlobalLogger\]          Calculation Period            : 600
2015-06-02T14:50:14.461 \[GlobalLogger\]          Statistics Granularity        : 1
2015-06-02T14:50:14.471 \[GlobalLogger\]  ... done.
2015-06-02T14:50:14.481 \[GlobalLogger\] Done all.
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The official Java Logging API (java.util.logging package \[[RD07|http://java.sun.com/j2se/1.4.1/docs/guide/util/logging/overview.html]\]) provides with a framework for generating, formatting and filtering log entries:
1.An object that can hold a log record (LogRecord). Its methods allow getting the level of priority, type and the timestamp as well as the filename, the process, the thread and the context of the source code where the log entry originates from. 
2.An object that is used to log messages for a specific system or application component (Logger). 
3.A mechanism for taking log entries and exporting them modeled by a Handler class (ConsoleHandler, FileHandler). There is one instance of the subclasses of this class per container  For more details, read about the Component-Container model in "Java Component Tutorial.". Both loggers and the handlers are organized in a hierarchical namespace so that children may inherit some properties from their parents.
3.An object that provides support for formatting a LogRecord (Formatter).  The formatter takes a LogRecord and converts it to a string. 
4.An object that defines a set of standard logging levels that can be used to control logging output (Level).  It can be applied to a log record, a logger and a handler. Specifying the lowest acceptable level acts for implementing the filtering functionality.

package alma.acs.logging;
import java.util.logging.Level;
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import alma.acs.component.client.ComponentClient;
import alma.acs.logging.domainspecific.AntennaContextLogger;
import alma.log_audience.OPERATOR;
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public class TestAudArr extends ComponentClient\{
        public TestAudArr(String managerLoc, String clientName) throws Exception \{
                super(null, managerLoc, clientName);
        \}
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        public static void main(String args\[\])\{
                String managerLoc = System.getProperty("ACS.manager");
                if (managerLoc == null) \{
                        System.out.println("Java property 'ACS.manager' must be set to the corbaloc of the ACS manager!");
                        System.exit(-1);
                \}
                String clientName = "TestAudArr";
                TestAudArr client = null;
                try\{
                        client = new TestAudArr(managerLoc, clientName);
                        AcsLogger m_logger = (AcsLogger)client.getContainerServices().getLogger();
                        AntennaContextLogger logger = new AntennaContextLogger(m_logger);
                        m_logger.log(Level.WARNING, "Normal Log");
                        m_logger.logToAudience(Level.WARNING, "Log with audience", OPERATOR.value);
                        m_logger.logToAudience(Level.WARNING, "Log exception with audience", new Exception("My dummy exception"), OPERATOR.value);
                                                        logger.log(Level.WARNING, "Log with audience, array and antenna", OPERATOR.value, "Array01", "Antenna01");
                        logger.log(Level.WARNING, "Log with array and antenna", "Array01", "Antenna01");
                        logger.log(Level.WARNING, "Log exception with audience, array and antenna", new Exception("My dummy exception"), OPERATOR.value, "Array01", "Antenna01");
                        logger.log(Level.WARNING, "Log exception with array and antenna", new Exception("My dummy exception"), "Array01", "Antenna01");
                        \\
                        Thread.sleep(1000);
                \}catch(Exception e)\{
                        System.out.println("Error creating test client");
                \}
                try\{
                        client.tearDown();
                \}catch(Exception e)\{
                        System.out.println("Error destroying test client");
                \}
        \}
\}

The statistics report is a log with additional data containing the name of the logger and the identificator of the statistics module (if configured) as well as the statistics calculated and described on §3.5
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<Info TimeStamp="2015-07-15T15:31:18.105" File="AcsLoggerTest.java"  Line="136" Routine="testLoggerStatistics" Host="alma" Process="alma.acs.logging.AcsLoggerTest" SourceObject="alma.acs.logging.AcsLoggerTest" Thread="main" LogId="41"><!\[CDATA\[LOGGING STATISTICS FOR: AcsLoggerTest.alma.acs.logging.AcsLoggerTest\]\]><Data Name="LoggerId"><!\[CDATA\[alma.acs.logging.AcsLoggerTest\]\]></Data><Data Name="LastPeriodDuration"><!\[CDATA\[4.012\]\]></Data><Data Name="MessageStatistics"><!\[CDATA\[2.7417746\]\]></Data><Data Name="StatisticsIdentification"><!\[CDATA\[AcsLoggerTest\]\]></Data><Data Name="ErrorMessageIncrement"><!\[CDATA\[NaN\]\]></Data><Data Name="StatisticsGranularity"><!\[CDATA\[1\]\]></Data><Data Name="MessageIncrement"><!\[CDATA\[Infinity\]\]></Data><Data Name="ErrorMessageStatistics"><!\[CDATA\[0.0\]\]></Data><Data Name="LastPeriodNumberOfErrorMessages"><!\[CDATA\[0\]\]></Data><Data Name="LastPeriodNumberOfMessages"><!\[CDATA\[11\]\]></Data></Info>
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The statistics report is a log with additional data containing the name of the logger and the identificator of the statistics module (if configured) as well as the statistics calculated and described on §3.5
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2015-07-16T13:28:02.345 StatisticsTest LOGGING STATISTICS FOR: AcspyTestLogging.StatisticsTest \[ StatisticsIdentification=AcspyTestLogging LoggerId=StatisticsTest LastPeriodDuration=2.00889706612 LastPeriodNumberOfMessages=4 StatisticsGranularity=1 MessageStatistics=1.99114233749 MessageIncrement=0 LastPeriodNumberOfErrorMessages=0 ErrorMessageStatistics=0.0 ErrorMessageIncrement=0 \]
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Along with other parameter characteristics (minimum and maximum value, unit of measurements, ...) these configuration parameters determine the parameter's archiving policy:
*archive_priority* (unsigned 32-bit integer): The priority of the log entry that will carry the information required for archiving the parameter's value. Default is 3 (LM_INFO). If the priority exceeds the value specified in the logging proxy's MaxCachePriority, the archiving data will be transmitted to the centralized logger immediately. If it is below MinCachePriority, the data will be ignored. If it is somewhere in-between, it will be cached locally until a sufficient amount of log entries is collected for transmission to the centralized logger.
*archive_max_int* (double): The maximum amount of time (in seconds and fractions of seconds) allowed to pass between two consecutive submissions to the log. If the time exceeds the value specified here, the log entry should be generated even though the value of the parameter has not changed sufficiently.
*archive_min_int* (double): The minimum amount of time (in seconds and fractions of seconds) allowed to pass between two consecutive submissions to the log. If the time is smaller than the value specified here, the log entry is not submitted, even though the value of the parameter has changed.
*archive_delta* (same type as parameter): Defines what a change in parameter value is. If the value changes for less than the amount specified here, no log entry is generated.
*For more details see the ACS Online documentation for CDB Schema files \[RD08\].*

The Centralized Logger sends all <Archive> elements to a special *_archiving notification channel{_}{*}. The reference to this notification channel can be found in the name resolution service under the name ArchivingChannel.
The log entries sent to the notification channel are structured events with the following properties (\[6\], section 2.2):