* Add `@Spi` annotation as the general annotation for SPI definition.
* Add isDefault in @Spi, add loadDefaultInstance and improve loadFirstInstanceOrDefault method, improve test cases
* Add SpiLoaderException class for thrown when something goes wrong while loading Provider
* Rearrange packages of base SPI mechanism
NOTE: this PR contains breaking changes regarding API.
- Unify the extended interface as a few event handlers: onPass, onBlocked, onComplete and onError
- Polish related code
Signed-off-by: Eric Zhao <sczyh16@gmail.com>
- Rename: whenComplete -> whenTerminate
- Execute the exit handler directly after the onExit hook of all slots
Signed-off-by: Eric Zhao <sczyh16@gmail.com>
* Refactor the workflow to fix the bug that circuit breaker may remain half-open state forever when the request is blocked by upcoming rules: revert the state change in exit handler (as a temporary workaround)
* Add exit handler in Entry as a per-invocation hook.
* Improve log info in SpiLoader, improve comment and test case
* Use error level in catch block, init ArrayList with capacity and improve add item to list
* Make slots loaded by SPI, mark all slots with @SpiOrder from -10000 to -1000, improve comment
* Reserve gateway and param slot chain builder (just extends DefaultSlotChainBuilder) and mark them as @Deprecated
* Move the legacy JUL methods from LogBase to BaseJulLogger.
* Add a JavaLoggingAdapter as the general JUL adapter for the Logger SPI, which makes it convenient to use (as the default logger).
* Add LoggerSpiProvider to resolve Logger SPI.
* Polish the logback demo.
Signed-off-by: Eric Zhao <sczyh16@gmail.com>
* There are two types of logger for command center and common modules specified by annotation of `LogTarget`
* Add implementing examples in `sentinel-demo/sentinel-demo-log-logback`
* All implementations should support placeholder '{}'
* Add detailsOnCondition method in Metric interface to filter MetricNode within the time condition.
* Add rawMetricsInMin method in Node interface, which will retrieve and generate metric items from the min-level sliding window on condition.
* Add test cases for detailsOnCondition.
Signed-off-by: Eric Zhao <sczyh16@gmail.com>
- The BBR period for maxCpuUsage strategy is deprecated. Now Sentinel will just check the CPU usage value, which could avert surge of CPU usage quickly
- Improve SystemRuleManager and SystemStatusListener
- Add some test cases
Signed-off-by: Eric Zhao <sczyh16@gmail.com>
* Add a ConsoleHandler to support logging into stdout and stderr.
* Add a `csp.sentinel.log.output.type` property to configure for output type of record logs (only a temporary design)
* Add millisecond to the format of CspFormatter
Add Sentinel MetricExtension, which provides extension to Sentinel internal statistics.
This extension provides callbacks when a request passes rule checking,
blocked by flow control, successfully end or exception occurred.
Accompanied by these events, response time and current thread number
will be recorded too.
Signed-off-by: Carpenter Lee <hooleeucas@163.com>