Package org.onlab.util

Miscellaneous domain-agnostic utilities.

See: Description

Interface Summary

Interface	Description
Accumulator<T>	Abstraction of an accumulator capable of collecting items and at some point in time triggers processing of all previously accumulated items.
Bandwidth	Representation of bandwidth.
RichComparable<T>	Extends useful methods for comparison to Comparable interface.
TriConsumer<U,V,W>	A consumer that accepts three arguments.

Class Summary

Class	Description
AbstractAccumulator<T>	Base implementation of an item accumulator.
BlockingBoolean	Mutable boolean that allows threads to wait for a specified value.
BoundedThreadPool	Implementation of ThreadPoolExecutor that bounds the work queue.
ByteArraySizeHashPrinter	Helper to print byte[] length and hashCode.
CountDownCompleter<T>	A synchronization utility that defers invocation of a consumer callback until a set number of actions tracked by a long counter complete.
Counter	Counting mechanism capable of tracking occurrences and rates.
DefaultHashMap<K,V>	HashMap that returns a default value for unmapped keys.
ExtendedSet<E>	A Set providing additional get, insertOrReplace and conditionalRemove methods.
Frequency	Class representing frequency.
GeoLocation	Geo location specified in terms of longitude and latitude.
GroupedThreadFactory	Thread factory for creating threads that belong to the specified thread group.
GuavaCollectors	Implementations of Collector that implement various useful reduction operations, such as accumulating elements into Guava collections.
HexDump	HexDump class an utility to dump buffer in hex format.
HexString
Identifier<T>	Abstract identifier backed by another value, e.g.
KryoNamespace	Pool of Kryo instances, with classes pre-registered.
KryoNamespace.Builder	KryoNamespace builder.
Match<T>	Utility class for checking matching values.
NewConcurrentHashMap<K,V>	Creates an instance of new ConcurrentHashMap on each NewConcurrentHashMap.get() call.
PositionalParameterStringFormatter	Allows slf4j style formatting of parameters into a string.
RetryingFunction<U,V>	Function that retries execution on failure.
SafeRecurringTask	Wrapper for a recurring task which catches all exceptions to prevent task being suppressed in a ScheduledExecutorService.
SharedExecutors	Utility for managing a set of shared execution resources, such as a timer, single thread executor and thread pool executor for use by various parts of the platform or by applications.
SharedScheduledExecutors	Utility for managing a set of shared execution resources, such as a single thread scheduled executor and thread pool scheduled executor for use by various parts of the platform or by applications.
SlidingWindowCounter	Maintains a sliding window of value counts.
Spectrum	Telecom optical wavelength bands: O, E, S, C, L and U bands.
Timer	Hashed-wheel timer singleton.
Tools	Miscellaneous utility methods.
UnmodifiableDeque<E>	Unmodifiable view of the specified Deque.

Enum Summary

Enum	Description
DataRateUnit	Data rate unit.

Exception Summary

Exception	Description
ItemNotFoundException	Represents condition where an item is not found or not available.

Package org.onlab.util Description

Miscellaneous domain-agnostic utilities.