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Oracle Coherence Community Edition
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Licensed under the Universal Permissive License v 1.0 as shown at
http://oss.oracle.com/licenses/upl.
Oracle Coherence Operational Base Schema definitions that is included by
the coherence schema definition files.
The site-name element contains the name of the geographic site that the
member is hosted at. For WAN clustering, this value identifies the
datacenter within which the member is located, and can be used as the
basis for intelligent routing, load balancing and disaster recovery
planning (i.e. the explicit backing up of data on separate geographic
sites). The name is also useful for displaying management information
(e.g. JMX) and interpreting log entries. Coherence currently does not
make use of this element in making decisions about data backup location.
It is optional to provide a value for this element. Deployments that
spread across more than one geographic site should specify a site-name
value.
Used in: member-identity
The rack-name element contains the name of the location within a
geographic site that the member is hosted at. This is often a cage,
rack or bladeframe identifier, and can be used as the basis for
intelligent routing, load balancing and disaster recovery planning
(i.e. the explicit backing up of data on separate bladeframes).
The name is also useful for displaying management information
(e.g. JMX) and interpreting log entries. Coherence currently does
not make use of this element in making decisions about data
backup location.
It is optional to provide a value for this element. Large scale
deployments should always specify a rack-name value.
Used in: member-identity
The machine-name element contains the name of the physical server that
the member is hosted on. This is often the same name as the server
identifies itself as (e.g. its HOSTNAME, or its name as it appears
in a DNS entry).
The name is also useful for displaying management information (e.g.
JMX) and interpreting log entries.
It is optional to provide a value for this element. However, it is
strongly encouraged that a name always be provided.
Used in: member-identity
The process-name element contains the name of the process (JVM) that
the member is hosted on. This name makes it possible to easily
differentiate among multiple JVMs running on the same machine. The
name is also useful for displaying management information
(e.g. JMX) and interpreting log entries.
It is optional to provide a value for this element. Often, a single
member will exist per JVM, and in that situation this name would
be redundant.
Used in: member-identity
The member-name element contains the name of the member itself. This
name makes it possible to easily differentiate among members, such
as when multiple members run on the same machine (or even within the
same JVM).
The name is also useful for displaying management information (e.g.
JMX) and interpreting log entries.
It is optional to provide a value for this element. However, it is
strongly encouraged that a name always be provided.
Used in: member-identity
The role-name element contains the name of the member role. This name
allows an application to organize members into specialized roles,
such as cache servers and cache clients.
The name is also useful for displaying management information (e.g.
JMX) and interpreting log entries.
It is optional to provide a value for this element. However, it is
strongly encouraged that a name always be provided.
Used in: member-identity
The filters element contains the declarative data for each filter.
Used in: cluster-config
The filter element contains the declarative data of a particular
filter.
Used in: filters
The filter-name element contains the canonical name of the
filter. This name is unique within the cluster.
Used in: filter
The filter-class element contains the class name of the filter
implementation.
This class must have a public default constructor and must implement the
com.tangosol.util.WrapperStreamFactory interface; optionally it may
implement the com.tangosol.run.xml.XmlConfigurable interface.
Used in: filter
The destination element specifies the output device used by the logging
system.
Valid values are "stdout", "stderr", "jdk", "log4j", "log4j2", "slf4j",
or a file name; the default is "stderr".
If "log4j", "log4j2" or "slf4j" is specified, the corresponding logging
libraries must be in the classpath. In all cases, the appropriate
logging configuration mechanism (system properties, property files, etc.)
should be used to configure the logging libraries.
Used in: logging-config
The severity-level element specifies which logged messages will be
output to the
log destination.
Valid values are:
- 0 only output without a logging severity level specified
will be logged
1 all the above plus errors
2 all the above plus warnings
3 all the above plus informational messages
4..9 all the above plus internal debugging messages
(the higher the number, the more the messages)
-1 no messages
Used in: logging-config
The message-format element specifies how messages that have a logging
level specified
will be formatted before passing them to the log destination.
The value of the message-format element is static text with the
following
replaceable parameters:
{date} the date/time format (to a millisecond) at which
the message was logged
{version} the Oracle Coherence exact version
and build details
{level} the logging severity level of the message
{thread} the thread name that logged the message
{member} the cluster
member id (if the cluster is currently running)
{text} the text of
the message
Used in: logging-config
The character-limit element specifies the maximum number of characters
that the logger daemon will process from the message queue before
discarding all remaining messages in the queue. Note that the
message that caused the total number of characters to exceed the
maximum will NOT be truncated, and all messages that are
discarded will be summarized by the logging system with a single
log entry detailing the number of messages that were discarded
and their total size. The truncation of the logging
is only temporary, since once the queue is processed (emptied),
the logger is reset so that subsequent messages will be logged.
The purpose of this setting is to avoid a situation where logging can
itself prevent recovery from a failing condition. For example, with
tight timings, logging can actually change the timings, causing more
failures and probably more logging, which becomes a vicious cycle. A
limit on the logging being done at any one point in time
is a "pressure valve" that prevents such a vicious cycle from
occurring. Note that logging occurs on a dedicated low-priority
thread to even further reduce its impact on the critical portions
of the system.
The value is a positive integer or zero. Zero implies no limit.
Used in: logging-config
The sampling-ratio element controls the likelihood of a tracing span being collected.
For instance, a value of 1.0 will result in all tracing spans being collected, while a value of 0.1
will result in roughly 1 out of every 10 tracing spans being collected.
A value of 0 indicates that tracing spans should only be collected if they are already in the context
of another tracing span. With such a configuration, Coherence will not initiate tracing on its own,
and it is up to the application to start an outer tracing span, from which Coherence will then collect
inner tracing spans.
A value of -1 disables tracing completely.
This element defaults to -1 if not overridden. For values other than -1, numbers between 0 and 1 are
acceptable.
Used in: tracing-config
The identity-asserter element contains the configuration info for the
class that implements the com.tangosol.net.security.IdentityAsserter
interface which will be called to validate an identity token in order
to establish a user's identity.
Used in: security-config
The identity-transformer element contains the configuration info for
the class that implements the com.tangosol.net.security.IdentityTransformer
interface which will be called to transforms a Subject to a token
that asserts identity.
Used in: security-config
The authorizer element contains the configuration info for
the class that implements the com.tangosol.net.security.Authorizer
interface which represents an environment-specific facility for authorizing
callers to perform actions described by the corresponding permission objects.
Used in: security-config
The configurable-cache-factory-config element contains the
configuration info for the configurable cache factory.
Used in: coherence