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schedule key in context #56

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schedule key in context #56

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9 changes: 8 additions & 1 deletion src/nodely/engine/applicative.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -90,11 +90,18 @@
(app/fmap (partial async/put! chan) contextual-v)
chan))

(defn schedule
"schedule key k to be evaluated within env, returns lazy environment"
[env k opts]
(let [lazy-env (lazy-env/lazy-env env eval-in-context opts)
_ (get lazy-env k)]
lazy-env))

(defn eval
[env k opts]
(let [lazy-env (lazy-env/lazy-env env eval-in-context opts)]
(protocols/-extract (get lazy-env k)) ;; ensures k is resolved
(merge env
(reduce (fn [acc [k v]] (assoc acc k (protocols/-extract v)))
{}
(lazy-env/scheduled-nodes lazy-env)))))
(lazy-env/scheduled-nodes lazy-env)))))
6 changes: 6 additions & 0 deletions test/nodely/engine/applicative_test.clj
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Expand Up @@ -289,3 +289,9 @@
promesa/context java.util.concurrent.CompletableFuture
core-async/context clojure.core.async.impl.channels.ManyToManyChannel
synchronous/context nodely.engine.applicative.synchronous.Box))

(deftest schedule
(let [lazy-env (applicative/schedule {:a (data/value 1)} :a {::applicative/context core-async/context})]
(is (= nodely.engine.lazy_env.LazySchedulingEnvironment (type lazy-env)))
(is (= (data/value 1) (async/<!! (get lazy-env :a))))))

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