Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Fixes #231: when resource name is too long in resource page, the name will jump out and cover other layout
- Hide `origin` input view in degrade rule dialog
- Refine style and color of buttons in dialogs
- Add support for exception count in degrade rule
- Other improvements

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Receiving "No metrics" response won't cause error log
- Improve log about fetching metrics

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Decouple rule checking from controller (now in service)

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Avoid ConcurrentModificationException when `getMachines()` by deep clone the machine map
- Enhance the code to avoid potential ConcurrentModificationException
- Add test cases

- Enhance rule checking in rule managers and Sentinel Dashboard frontend
- Enhance error information when reporting invalid fields in rule dialog

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Update dashboard API client to support authority rule commands
- Add REST API and frontend page for authority rules

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Fixes #22 (by @jasonjoo2010)

- Update dashboard API client to support authority and parameter flow commands
- Add REST API controller for parameter flow rules in dashboard
- Add pages for configuring parameter flow rules
- Update dependencies: upgrade Spring Boot to 2.x and remove unused dependencies
- Other refinements

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

normalize metric fields and methods:
- rename exception to exceptionQps;
- remove ed postfix of all fields and methods about metrics;

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Abstract a universal `MetricsRepository` interface so that users can implement their own metrics persistence.
- Reuse original in-memory implementation (`InMemoryMetricsRepository`) as the default repository.

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

* Use named thread factory with all thread pools for identification

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>