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Make make-timestamp-fn thread safe (thanks to jarppe for report)

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Peter Taoussanis 2013-08-07 12:44:37 +07:00
parent 382f9d4f9a
commit 718f38c462
1 changed files with 7 additions and 4 deletions
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11
src/taoensso/timbre.clj
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@ -190,11 +190,14 @@
(defn- make-timestamp-fn
"Returns a unary fn that formats instants using given pattern string and an
optional Locale."
;; Thread safe SimpleDateTime soln. from instant.clj, Ref. http://goo.gl/CEBJnQ
[^String pattern ^Locale locale]
(let [format (if locale
(SimpleDateFormat. pattern locale)
(SimpleDateFormat. pattern))]
(fn [^Date instant] (.format ^SimpleDateFormat format instant))))
(let [format (proxy [ThreadLocal] [] ; For thread safety
(initialValue []
(if locale
(SimpleDateFormat. pattern locale)
(SimpleDateFormat. pattern))))]
(fn [^Date instant] (.format ^SimpleDateFormat (.get format) instant))))
(comment ((make-timestamp-fn "yyyy-MMM-dd" nil) (Date.)))