metrics

• Place JMX-related classes under a new namespace

• Compiled and targeted Java8
• Move JMX classes to the metrics-jmx module
• Fix a racy read bug in EWMA
• Use Java 8 Time API for data formatting of health checks
• Remove unnecessary reflection hacks for HealthCheckRegistry
• Removed metrics-log4j
• Removed metrics-jetty9-legacy
• Removed metrics-jetty8
• Removed metrics-jersey
• Removed metrics-ganglia
• Removed internal LongAdder
• Removed internal ThreadLocalRandom
• Optimized generating random numbers
• Timer.Context now implements AutoCloseable
• Upgrade Jetty integration to Jetty 9.4

• Support tracking Jersey filters in Jersey resources (#1118, #1193)
• Add ResponseMetered annotation for Jersey resources (#1186)

• [InstrumentedScheduledExecutorService] Fix the scheduledFixedDelay to call the correct method #1192

• Fix GraphiteReporter rate reporting #1167
• Remove non Jdk6 compatible letter from date pattern #1163
• Fix uncaught CancellationException when stopping reporter #1170

• Improve ScheduledReporter convertDurations precision #1115
• Suppress all kinds of Throwables raised by report() #1128
• Exponentially Decaying Reservoir was giving incorrect values in the snapshot if the inactive period was too long #1135
• Ability to get default metrics registry without an exception #1140
• Ability to get default health check registry without an exception #1152
• SlidingTimeWindowArrayReservoir as a fast alternative of SlidingTimeWindowReservoir #1139 #1144 #1145
• Avoid a NPE in toString of HealthCheck.Result #1141

• More robust lookup of ThreadLocal and LongAdder on JDK6 (e.g. WebLogic) #1136

• Fix creating a uniform snapshot from a collection #1111
• Register metrics defined at Resource level #1105

• Shutdown health check registry #1084
• Add support for the default shared health check registry name #1095
• Make SharedMetricRegistries thread-safe #1094
• Report the size of the snapshot via JMX #1102
• Don't ignore the counter attribute #1090
• Add support to disable attributes in ConsoleReporter #1092
• Rollback GraphiteSanitize to replacing whitespaces #1099

• Fix accidentally broken Graphite UDP reporter #1100

• GraphiteReporter opens a new TCP connection when sending metrics instead of maintaining a persisted connection. #1047
• GraphiteReporter retries DNS lookups in case of a lookup failure. #1064
• ScheduledReporter suppresses all kind of exceptions raised by the report method. #1049
• JDK's ThreadLocalRandom is now used by default. #1052
• JDK's LongAdder is now used by default. #1055
• Fixed a race condition bug in ExponentiallyDecayingReservoir. #1033
• Fixed a long overflow bug in SlidingTimeWindowReservoir. #1063
• AdminServlet supports CPU profiling. #927
• GraphiteReporter sanitizes metrics. #938
• Support for publishing BigInteger and BigDecimal metrics in GraphiteReporter. #933
• Support for publishing boolean metrics in GraphiteReporter. #905
• Added support for overriding the format of floating numbers in GraphiteReporter. #1073
• Added support for disabling reporting of metric attributes. #1048
• Reporters are more user friendly for managed environments like GAE or JEE. #1018
• Support for setting a custom initial delay for reporters. #999
• Support for custom details in a result of a health check. #663
• Support for asynchronous health checks #1077
• Added a listener for health checks. #1068
• Health checks are reported as unhealthy on exceptions. #783
• Allow setting a custom prefix for Jetty's InstrumentedQueuedThreadPool. #947
• Allow setting custom prefix for Jetty's QueuedThreadPool. #908
• Added support for Jetty 9.3 and higher. #1038
• Fixed instrumentation of Jetty9 async servlets. #1074
• Added support for JCache/JSR 107 metrics. #1010
• Added thread-safe getters for metrics with custom instantiations. #1023
• Added an overload of Timer#time that takes a Runnable. #989
• Support extracting the request URI from wrapped requests in HttpClientMetricNameStrategies. #947
• Support for the log4j2 xml-based config. #900
• Internal Striped64 doesn't depend on sun.misc.Unsafe anymore. #966
• Optimized creation of UniformSnapshot. #970
• Added a memory pool gauge to the JVM memory usage metrics. #786
• Added support for async servlets for metric-servlet. #796
• Opt-in default shared metric registry. #801
• Added support for patterns in MBean object names #809
• Allow a pluggable strategy for the name of the CSV files for CsvReporter. #882
• Upgraded to slf4j 1.22
• Upgraded to Jackson 2.6.6
• Upgraded to amqp-client 3.6.6
• Upgraded to httpclient 4.5.2
• Upgraded to log4j2 2.3
• Upgraded to logback 1.1.10

• GraphiteReporter opens a new TCP connection when sending metrics instead of maintaining a persisted connection. #1036
• * GraphiteReporter retries DNS lookups in case of a lookup failure. `#1064
• ScheduledReporter suppresses all kind of exceptions raised by the report method. #1040
• JDK's ThreadLocalRandom is now used by default. #1052
• JDK's LongAdder is now used by default. `#1055
• Fixed a race condition bug in ExponentiallyDecayingReservoir #1046
• Fixed a long overflow bug in SlidingTimeWindowReservoir #1072

Release notes forthcoming

Release notes forthcoming