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Tasks: detect cycles

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Michiel Borkent 2021-05-02 15:04:07 +02:00
parent 12c29eb308
commit 70e0566647
1 changed files with 44 additions and 38 deletions
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82
src/babashka/impl/tasks.clj
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@ -230,7 +230,7 @@
(let [task (tasks task-name)
depends (:depends task)]
(when (contains? processing task-name)
(throw (Exception. (str "Cyclic task: " task-name))))
(throw (ex-info (str "Cyclic task: " task-name) {})))
(loop [deps (seq depends)]
(let [deps (remove #(contains? @processed %) deps)
order (vec (mapcat #(target-order tasks % processed (conj processing task-name)) deps))]
@ -261,47 +261,53 @@
requires (get tasks :requires)
init (get tasks :init)
prog (if-let [depends (when m? (:depends task))]
(let [targets (target-order tasks task-name)
(let [[targets error]
(try [(target-order tasks task-name)]
(catch clojure.lang.ExceptionInfo e
[nil (ex-message e)]))
#_#_dependees (tasks->dependees targets tasks)
task-map (cond-> {}
enter (assoc :enter enter)
leave (assoc :leave leave))]
(loop [prog ""
targets (seq targets)
done []
extra-paths []
extra-deps nil
requires requires]
(let [t (first targets)
targets (next targets)
#_#_ depends-on-t (get dependees t)
task-map (cond->
(assoc task-map
:name t
#_#_:started done)
#_#_targets (assoc :pending (vec targets))
#_#_depends-on-t (assoc :dependents depends-on-t))]
(if targets
(if-let [task (get tasks t)]
(recur (str prog "\n" (assemble-task-1 task-map task parallel?))
targets
(conj done t)
(concat extra-paths (:extra-paths task))
(merge extra-deps (:extra-deps task))
(concat requires (:requires task)))
[(binding [*out* *err*]
(println "No such task:" t)) 1])
(if-let [task (get tasks t)]
(let [prog (str prog "\n"
(apply str (map deref-task depends))
"\n"
(assemble-task-1 task-map task parallel? true))
extra-paths (concat extra-paths (:extra-paths task))
extra-deps (merge extra-deps (:extra-deps task))
requires (concat requires (:requires task))]
[[(format-task init extra-paths extra-deps requires prog)] nil])
[(binding [*out* *err*]
(println "No such task:" t)) 1])))))
(if error
[(binding [*out* *err*]
(println error)) 1]
(loop [prog ""
targets (seq targets)
done []
extra-paths []
extra-deps nil
requires requires]
(let [t (first targets)
targets (next targets)
#_#_ depends-on-t (get dependees t)
task-map (cond->
(assoc task-map
:name t
#_#_:started done)
#_#_targets (assoc :pending (vec targets))
#_#_depends-on-t (assoc :dependents depends-on-t))]
(if targets
(if-let [task (get tasks t)]
(recur (str prog "\n" (assemble-task-1 task-map task parallel?))
targets
(conj done t)
(concat extra-paths (:extra-paths task))
(merge extra-deps (:extra-deps task))
(concat requires (:requires task)))
[(binding [*out* *err*]
(println "No such task:" t)) 1])
(if-let [task (get tasks t)]
(let [prog (str prog "\n"
(apply str (map deref-task depends))
"\n"
(assemble-task-1 task-map task parallel? true))
extra-paths (concat extra-paths (:extra-paths task))
extra-deps (merge extra-deps (:extra-deps task))
requires (concat requires (:requires task))]
[[(format-task init extra-paths extra-deps requires prog)] nil])
[(binding [*out* *err*]
(println "No such task:" t)) 1]))))))
[[(format-task
init
(:extra-paths task)