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spec.clj
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spec.clj
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(ns diehard.spec
(:require [clojure.spec.alpha :as s]
[diehard.rate-limiter :as dr]
[diehard.bulkhead :as db])
(:import [dev.failsafe RetryPolicy CircuitBreaker]))
;; copied from https://groups.google.com/forum/#!topic/clojure/fti0eJdPQJ8
(defmacro only-keys
[& {:keys [req req-un opt opt-un] :as args}]
`(s/merge (s/keys ~@(apply concat (vec args)))
(s/map-of ~(set (concat req
(map (comp keyword name) req-un)
opt
(map (comp keyword name) opt-un)))
any?)))
(def is-throwable-class?
#(isa? % Throwable))
;; retry policy
(s/def :retry/policy #(instance? RetryPolicy %))
(s/def :retry/circuit-breaker #(instance? CircuitBreaker %))
(s/def :retry/retry-if fn?)
(s/def :retry/retry-on
(s/or :single is-throwable-class?
:multi (s/coll-of is-throwable-class?)))
(s/def :retry/retry-when any?)
(s/def :retry/abort-if fn?)
(s/def :retry/abort-on
(s/or :single is-throwable-class?
:multi (s/coll-of is-throwable-class?)))
(s/def :retry/abort-when any?)
(s/def :retry/backoff-ms
(s/or :single int?
:tuple2 (s/tuple int? int?)
:tuple3 (s/tuple int? int? double?)))
(s/def :retry/max-retries int?)
(s/def :retry/max-duration-ms int?)
(s/def :retry/delay-ms int?)
(s/def :retry/jitter-factor double?)
(s/def :retry/jitter-ms int?)
(s/def :retry/on-abort fn?)
(s/def :retry/on-complete fn?)
(s/def :retry/on-failed-attempt fn?)
(s/def :retry/on-failure fn?)
(s/def :retry/on-retry fn?)
(s/def :retry/on-retries-exceeded fn?)
(s/def :retry/on-success fn?)
;; constant or function
(s/def :retry/fallback any?)
(s/def :retry/retry-policy-new
(only-keys :opt-un [:retry/policy :retry/circuit-breaker
:retry/retry-if :retry/retry-on :retry/retry-when
:retry/abort-if :retry/abort-on :retry/abort-when
:retry/backoff-ms :retry/max-retries :retry/max-duration-ms
:retry/delay-ms :retry/jitter-factor :retry/jitter-ms
:retry/on-abort :retry/on-complete :retry/on-failed-attempt
:retry/on-failure :retry/on-retry :retry/on-retries-exceeded
:retry/on-success :retry/listener]))
(s/def :retry/retry-block
(only-keys :opt-un [:retry/policy :retry/circuit-breaker
:retry/retry-if :retry/retry-on :retry/retry-when
:retry/abort-if :retry/abort-on :retry/abort-when
:retry/backoff-ms :retry/max-retries :retry/max-duration-ms
:retry/delay-ms :retry/jitter-factor :retry/jitter-ms
:retry/on-abort :retry/on-complete :retry/on-failed-attempt
:retry/on-failure :retry/on-retry :retry/on-retries-exceeded
:retry/on-success :retry/listener
:retry/fallback]))
;; circuit breaker
(s/def :circuit-breaker/fail-if fn?)
(s/def :circuit-breaker/fail-on
(s/or :single is-throwable-class?
:multi (s/coll-of is-throwable-class?)))
(s/def :circuit-breaker/fail-when any?)
(s/def :circuit-breaker/failure-threshold int?)
(s/def :circuit-breaker/failure-threshold-ratio (s/tuple int? int?))
(s/def :circuit-breaker/failure-threshold-ratio-in-period (s/tuple int? int? int?))
(s/def :circuit-breaker/failure-rate-threshold-in-period (s/tuple int? int? int?))
(s/def :circuit-breaker/success-threshold int?)
(s/def :circuit-breaker/success-threshold-ratio (s/tuple int? int?))
(s/def :circuit-breaker/delay-ms int?)
(s/def :circuit-breaker/timeout-ms int?)
(s/def :circuit-breaker/on-open fn?)
(s/def :circuit-breaker/on-close fn?)
(s/def :circuit-breaker/on-half-open fn?)
(s/def :timeout/on-success fn?)
(s/def :timeout/on-failure fn?)
(s/def :circuit-breaker/circuit-breaker
(only-keys :opt-un [:circuit-breaker/fail-if
:circuit-breaker/fail-on
:circuit-breaker/fail-when
:circuit-breaker/failure-threshold
:circuit-breaker/failure-threshold-ratio
:circuit-breaker/failure-threshold-ratio-in-period
:circuit-breaker/failure-rate-threshold-in-period
:circuit-breaker/success-threshold
:circuit-breaker/success-threshold-ratio
:circuit-breaker/on-open
:circuit-breaker/on-half-open
:circuit-breaker/on-close
:circuit-breaker/delay-ms
:circuit-breaker/timeout-ms]))
(s/def :timeout/timeout-ms int?)
(s/def :timeout/async? boolean?)
(s/def :timeout/timeout-new
(only-keys :req-un [:timeout/timeout-ms]
:opt-un [:timeout/interrupt?
:timeout/on-success
:timeout/on-failure]))
;; rate limiter
(s/def :rate-limiter/rate int?)
(s/def :rate-limiter/max-cached-tokens int?)
(s/def :rate-limiter/rate-limiter-new
(only-keys :req-un [:rate-limiter/rate]
:opt-un [:rate-limiter/max-cached-tokens]))
(s/def :rate-limiter/ratelimiter #(satisfies? dr/IRateLimiter %))
(s/def :rate-limiter/max-wait-ms int?)
(s/def :rate-limiter/permits int?)
(s/def :rate-limiter/rate-limiter-block
(only-keys :req-un [:rate-limiter/ratelimiter]
:opt-un [:rate-limiter/max-wait-ms
:rate-limiter/permits]))
;; bulkhead
(s/def :bulkhead/concurrency int?)
(s/def :bulkhead/bulkhead-new
(only-keys :req-un [:bulkhead/concurrency]))
(s/def :bulkhead/bulkhead #(satisfies? db/IBulkhead %))
(s/def :bulkhead/max-wait-ms int?)
(s/def :bulkhead/bulkhead-block
(only-keys :req-un [:bulkhead/bulkhead]
:opt-un [:bulkhead/max-wait-ms]))