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termux-tools: use weight-based mirror selection (#5628) 

* Weight-based mirror selection: do not give each mirror same usage ratio as hosts have different properties.
* Rotate mirrors after 6h: pkg now checks usability of all mirrors before selecting one, this takes time but we may want to reduce delays before the actual `apt` operation will be started.
* Update apt cache after 20min: reduce amount of necessary package list queries. We even can go with 1h, but since we prefer origin repository over mirrors as download source, 20 minutes should be fine.
This commit is contained in:
Leonid Pliushch 2020-08-01 20:25:19 +03:00 committed by GitHub
parent 0c682b3cd6
commit 22a4bf8cfe
2 changed files with 38 additions and 13 deletions
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2
packages/termux-tools/build.sh
View File

@ -1,7 +1,7 @@
TERMUX_PKG_HOMEPAGE=https://termux.com/
TERMUX_PKG_DESCRIPTION="Basic system tools for Termux"
TERMUX_PKG_LICENSE="GPL-3.0"
TERMUX_PKG_VERSION=0.90
TERMUX_PKG_VERSION=0.91
TERMUX_PKG_SKIP_SRC_EXTRACT=true
TERMUX_PKG_PLATFORM_INDEPENDENT=true
TERMUX_PKG_ESSENTIAL=true

49
packages/termux-tools/pkg
View File

@ -42,7 +42,12 @@ show_help() {
select_mirror() {
local main_repo="https://termux.org/packages"
local top_mirrors="https://dl.bintray.com/termux/termux-packages-24 https://termux.mentality.rip/termux-packages-24 https://grimler.se/termux-packages-24 https://main.termux-mirror.ml"
declare -A mirrors
mirrors[50]="https://dl.bintray.com/termux/termux-packages-24"
mirrors[23]="https://termux.mentality.rip/termux-packages-24"
mirrors[15]="https://main.termux-mirror.ml"
mirrors[12]="https://grimler.se/termux-packages-24"
local current_mirror
current_mirror=$(grep -P "^\s*deb\s+" @TERMUX_PREFIX@/etc/apt/sources.list | grep -oP 'https?://[a-z0-9/._-]+')
@ -54,24 +59,44 @@ select_mirror() {
return
fi
if [ -n "$(find /data/data/com.termux/cache/apt/pkgcache.bin -mmin -180 2>/dev/null)" ]; then
# Mirrors are rotated if either they are not working or 180 minutes timeout
# has passed.
# Mirrors are rotated if 6 hours timeout has been passed or mirror is no longer accessible.
if [ -n "$(find /data/data/com.termux/cache/apt/pkgcache.bin -mmin -360 2>/dev/null)" ]; then
if [ -n "${current_mirror}" ] && curl --user-agent 'Termux-PKG/1.0 mirror-checker' --head --fail --location "${current_mirror}/dists/stable/Release" >/dev/null 2>&1; then
echo "Reusing mirror: ${current_mirror}"
return
fi
fi
# Shuffle mirrors and pick the first one which is accessible.
local m selected_mirror=""
for m in $(echo "$top_mirrors" | tr ' ' '\n' | shuf); do
echo "Trying mirror: $m"
if curl --user-agent 'Termux-PKG/1.0 mirror-checker' --head --fail --location "${m}/dists/stable/Release" >/dev/null 2>&1; then
selected_mirror="$m"
break
# Test mirror availability, remove unaccessible mirrors from list.
echo "Testing the available mirrors:"
local w total_mirror_weight=0
for w in "${!mirrors[@]}"; do
echo -n "[*] ${mirrors[$w]}: "
if curl --user-agent 'Termux-PKG/1.0 mirror-checker' --head --fail --location "${mirrors[$w]}/dists/stable/Release" >/dev/null 2>&1; then
echo "ok"
total_mirror_weight=$((total_mirror_weight + w))
else
echo "bad"
unset "mirror[$w]"
fi
done
unset w
# Weight-based mirror selection.
local selected_mirror=""
if ((total_mirror_weight > 0)); then
local w random_weight calc_weight=0
random_weight=$((RANDOM % total_mirror_weight + 1))
for w in $(echo "${!mirrors[@]}" | tr ' ' '\n' | sort -n); do
calc_weight=$((calc_weight + w))
if ((calc_weight >= random_weight)); then
echo "Picking mirror: ${mirrors[$w]}"
selected_mirror="${mirrors[$w]}"
break
fi
done
fi
if [ -n "${selected_mirror}" ]; then
echo "deb ${selected_mirror}/ stable main" > @TERMUX_PREFIX@/etc/apt/sources.list
@ -82,7 +107,7 @@ select_mirror() {
}
update_apt_cache() {
if [ -z "$(find /data/data/com.termux/cache/apt/pkgcache.bin -mmin -5 2>/dev/null)" ]; then
if [ -z "$(find /data/data/com.termux/cache/apt/pkgcache.bin -mmin -20 2>/dev/null)" ]; then
apt update
fi
}