Merge pull request #32 from metabase/add-mb-download

Adds Dan's mb-download script

Author: escherize

README.md

@@ -117,3 +117,17 @@ This stack is to test how Metabase behaves in HA mode, so you'll have a configur
 HAProxy is configured to balance requests in a round-robin manner and it checks the health of the application (so you can also simulate a failure)
 
 This will allow you to test how Metabase behaves when it scales horizontally, both on the FE (showing things like the process picker in the troubleshooting -> logs section) and on the backend (health checks, queues, settings, etc). All configs in the LB can be changed from the config in stacks/ha/config/haproxy.cfg
+
+# Downloading Jars
+
+`mb-download` will let you download a jar to a given path or straight into `$JARS`.
+
+``` bash
+$ ./mb-download -h
+Usage: mb-download 0.42.2
+Usage: mb-download 1.45.2
+Usage: mb-download 1.45.2 ~/path/to/my/jars
+
+protip: this script will read from $JARS, and use that as your jar directory.
+```
+

mb-download

@@ -0,0 +1,46 @@
+#!/usr/bin/env bb
+
+(require '[babashka.curl :as curl])
+(require '[clojure.java.io :as io])
+(require '[clojure.repl :refer [pst]])
+(require '[clojure.string :as str])
+
+(defn url [version]
+  (str "https://downloads.metabase.com"
+       (when (str/starts-with? version "1") "/enterprise")
+       "/v"
+       version "/metabase.jar"))
+
+
+
+(defn download [version dir]
+  (io/copy
+    (:body (curl/get (url version) {:as :stream}))
+    (io/file (str dir "/" version ".jar"))))
+
+(defn download-jar! [version dir]
+  (try
+    (println (str "Downloading from " (url version)))
+    (download version dir)
+    (println (str "Downloaded " version ".jar to " dir))
+    (catch Exception e
+      (println (str "Error downloading version " version))
+      (pst e))))
+
+(defn without-slash [s] (str/replace s #"/$" ""))
+
+(defn main []
+  (let [[version dir] *command-line-args*
+        dir (some-> (or dir (System/getenv "JARS"))
+                    without-slash)]
+    (if (or (nil? version)
+            (nil? dir)
+            (#{"help" "--help" "-h"} version))
+      (do (println "Usage: mb-download 0.42.2")
+          (println "Usage: mb-download 1.45.2")
+          (println "Usage: mb-download 1.45.2 ~/path/to/my/jars")
+          (println "")
+          (println "protip: this script will read from $JARS, and use that as your jar directory."))
+      (download-jar! version dir))))
+
+(main)