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Lower bandwidth at startup #264

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Merged
merged 8 commits into from
Sep 17, 2019
Merged

Lower bandwidth at startup #264

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783906c
Use gzipped version of clojars artifacts
paulrd Aug 1, 2019
c30a682
Write artifacts to local file
paulrd Aug 1, 2019
5e0cba6
Use .artifacts-cache file to cache artifacts between runs
paulrd Aug 1, 2019
34f83cf
check if cache file exists
paulrd Aug 1, 2019
1ec5101
moved cache file to system temp director
paulrd Aug 1, 2019
9b2166b
Update changelog for PR #264
paulrd Aug 1, 2019
81339ba
keep map of artifacts sorted after reading back from disk
paulrd Aug 1, 2019
66ffc0a
Read from disk as edn data (subset of clojure is safer)
paulrd Aug 2, 2019
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3 changes: 2 additions & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -24,4 +24,5 @@ install.cmd
/.cljs_node_repl/
/out/
/.lein-env
.inline-deps
.inline-deps
/.artifacts-cache
26 changes: 21 additions & 5 deletions src/refactor_nrepl/artifacts.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -10,10 +10,23 @@
[refactor-nrepl.ns.slam.hound.regrow :as slamhound-regrow]
[version-clj.core :as versions])
(:import java.util.Date
java.util.zip.GZIPInputStream
java.util.jar.JarFile))

(def artifacts-file ".artifacts-cache")

(defn get-last-modified-from-file
"Returns last modified time in milliseconds or nil if file does not exist."
[file]
(let [lm (.lastModified (io/file file))]
(if (zero? lm) nil lm)))

;; structure here is {"prismatic/schem" ["0.1.1" "0.2.0" ...]}
(defonce artifacts (atom {} :meta {:last-modified nil}))
(defonce artifacts (atom (if (.exists (io/as-file artifacts-file))
(-> artifacts-file slurp read-string)
{})
:meta {:last-modified
(get-last-modified-from-file artifacts-file)}))
(def millis-per-day (* 24 60 60 1000))

(defn- get-proxy-opts
Expand All @@ -27,7 +40,7 @@
(defn- stale-cache?
[]
(or (empty? @artifacts)
(if-let [last-modified (some-> artifacts meta :last-modified .getTime)]
(if-let [last-modified (some-> artifacts meta :last-modified)]
(neg? (- millis-per-day (- (.getTime (java.util.Date.)) last-modified)))
true)))

Expand All @@ -43,8 +56,9 @@
"Returns a vector of [[some/lib \"0.1\"]...]."
[]
(try
(->> "https://clojars.org/repo/all-jars.clj"
java.net.URL.
(->> "https://clojars.org/repo/all-jars.clj.gz"
io/input-stream
GZIPInputStream.
io/reader
line-seq
(keep edn-read-or-nil))
Expand Down Expand Up @@ -97,7 +111,9 @@
(let [clojars-artifacts (future (get-artifacts-from-clojars!))
maven-artifacts (future (get-artifacts-from-mvn-central!))]
(reset! artifacts (into @clojars-artifacts @maven-artifacts))
(alter-meta! artifacts update-in [:last-modified] (constantly (java.util.Date.)))))
(spit artifacts-file @artifacts)
(alter-meta! artifacts update-in [:last-modified]
(constantly (get-last-modified-from-file artifacts-file)))))

(defn artifact-list
[{:keys [force]}]
Expand Down