From 563cf021c96446aa15a41c1f532067d13d880b41 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Sun, 8 Dec 2013 15:13:23 -0500
Subject: db-import: detect best package mirror

---
 db-import.conf |  5 ++++-
 db-pick-mirror | 24 ++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100755 db-pick-mirror

diff --git a/db-import.conf b/db-import.conf
index ef96568..1ba50ba 100644
--- a/db-import.conf
+++ b/db-import.conf
@@ -7,5 +7,8 @@ _archrepos=(
 	community{,-testing}-{i686,x86_64}
 	multilib{,-testing}-x86_64
 )
+
+_archpkgmirror=$(db-pick-mirror rsync https://www.archlinux.org/mirrors/status/json/)
+
 # name pkgmirror absmirror repo-arch...
-imports=("archlinux archlinux.c3sl.ufpr.br/archlinux rsync.archlinux.org ${_archrepos[*]}")
+imports=("archlinux ${_archpkgmirror} rsync.archlinux.org ${_archrepos[*]}")
diff --git a/db-pick-mirror b/db-pick-mirror
new file mode 100755
index 0000000..7cbc032
--- /dev/null
+++ b/db-pick-mirror
@@ -0,0 +1,24 @@
+#!/usr/bin/env ruby
+
+require 'json'
+require 'rest_client'
+
+protocol = ARGV[0]
+jsonurl = ARGV[1]
+
+data = JSON::parse(RestClient.get(jsonurl))
+
+if data["version"] != 3
+	print "Data format version != 3"
+	exit 1
+end
+
+urls = data["urls"]
+rsync_urls = urls.select{|a| a["protocol"]==protocol}
+
+# By score ( (delay+speed)/completion )
+#best = rsync_urls.sort{|a,b| (a["score"] || Float::INFINITY) <=> (b["score"] || Float::INFINITY) }.first
+# By delay/completion ; hopefully this gives us a tier 1 mirror
+best = rsync_urls.sort{|a,b| a["delay"]/a["completion_pct"] <=> b["delay"]/b["completion_pct"] }.first
+
+puts best["url"]
-- 
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