Updating tickets (#1259, #1260, #1364, #1734, #1778)

https://github.com/akka/akka/pull/427

(In revision:a35cc848df0c22f85d8d9604ab73528f05459c42) CircuitBreaker proposal with Future. See #1734

Branch: wip-1734-circuit-breaker-patriknw

Brian is completing the final pieces. Only documentation left.
https://github.com/akka/akka/pull/466

(In revision:6a415f0e9bf915a366e36ab0bc6d4cb43cb3f15e) * Add Circuit Breaker to akka.pattern for general use. Circuit breaker implementation as described by Michael T. Nygard in Release It!. Fixes #1734

• Uses finite state machine for three states: Closed, Open, Half-Open
• Closed state allows calls through, and on sequential failures exceeding the max# set - transitions to Open state. Intervening successes cause the failure count to reset to 0
• Open state throws a CircuitOpenException on every call until the reset timeout is reached which causes a transition to Half-Open state
• Half-Open state will allow the next single call through, if it succeeds - transition to Closed state, if it fails - transition back to Open state, starting the reset timer again
• Allow configuration for the call and reset timeouts, as well as the maximum number of sequential failures before opening
• Supports async or synchronous call protection
• Callbacks are supported for state entry into Closed, Open, Half-Open. These are run in the supplied execution context
• Both thrown exceptions and calls exceeding max call time are considered failures
• Uses akka scheduler for timer events
• Integrated into File-Based durable mailbox
• Sample documented for other durable mailboxes

Branch: master

Great work Brian.

/Patrik

(In revision:6a415f0e9bf915a366e36ab0bc6d4cb43cb3f15e) * Add Circuit Breaker to akka.pattern for general use. Circuit breaker implementation as described by Michael T. Nygard in Release It!. Fixes #1734

• Uses finite state machine for three states: Closed, Open, Half-Open
• Closed state allows calls through, and on sequential failures exceeding the max# set - transitions to Open state. Intervening successes cause the failure count to reset to 0
• Open state throws a CircuitOpenException on every call until the reset timeout is reached which causes a transition to Half-Open state
• Half-Open state will allow the next single call through, if it succeeds - transition to Closed state, if it fails - transition back to Open state, starting the reset timer again
• Allow configuration for the call and reset timeouts, as well as the maximum number of sequential failures before opening
• Supports async or synchronous call protection
• Callbacks are supported for state entry into Closed, Open, Half-Open. These are run in the supplied execution context
• Both thrown exceptions and calls exceeding max call time are considered failures
• Uses akka scheduler for timer events
• Integrated into File-Based durable mailbox
• Sample documented for other durable mailboxes

Branch: wip-2134-deathwatch2.0-√

Updating tickets (#520, #852, #857, #874, #935, #950, #1364, #1508, #1542, #1559, #1734, #1744, #1755, #1782, #1812, #1824, #1831, #1858, #1871, #1880, #1886, #1892, #1896, #1899, #1929, #1930, #1950, #1952, #1953, #1962, #1966, #1969, #1972, #1973, #1977, #1978, #1986, #1988, #1993, #1999, #2000, #2003, #2005, #2006, #2015, #2016, #2019, #2021, #2022, #2023, #2024, #2025, #2029, #2031, #2032, #2036, #2046, #2048, #2051, #2055, #2059, #2061, #2062, #2064, #2065, #2068, #2072, #2074, #2076, #2078, #2079, #2085, #2087, #2088, #2089, #2090, #2091, #2092, #2093, #2095, #2098, #2099, #2100, #2101, #2102, #2119, #2129, #2134, #2135, #2136, #2144, #2147, #2148, #2156, #2166, #2168, #2172, #2174, #2178, #2183)