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termux-tools: automatically pick a mirror by pkg (#5621) 

See https://github.com/termux/termux-packages/issues/5620.

Implements automatic mirror selection:
* Pick a random URL of top 4 mirrors of Termux main repository and use it during 30 minutes limit, then rotate to a new one. Distribute traffic accross multiple mirrors, including origin Bintray repository.
* During 30 minutes limit, let `pkg` to check whether mirror is accessible on each run. If mirror is not accessible, use a new one. Mirrors are not guaranteed to be 100% accessible, so let pkg to check which one is working before using `apt`.
* Skip rotating if using `.cn` mirrors - Chinese users will not want to use something else due to great firewall and download speed issues.
This commit is contained in:
Leonid Pliushch 2020-07-31 14:18:43 +03:00 committed by GitHub
parent 4e94cb99d8
commit 713c7160fc
2 changed files with 60 additions and 7 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=0.85
TERMUX_PKG_VERSION=0.86
TERMUX_PKG_SKIP_SRC_EXTRACT=true
TERMUX_PKG_PLATFORM_INDEPENDENT=true
TERMUX_PKG_ESSENTIAL=true

65
packages/termux-tools/pkg
View File

@ -1,4 +1,4 @@
#!/bin/sh
#!/bin/bash
set -e -u
show_help() {
@ -18,8 +18,49 @@ show_help() {
exit 1
}
check_pkgcache() {
if [ -z "$(find @TERMUX_PREFIX@/var/cache/apt/pkgcache.bin -mmin -5)" ]; then
select_mirror() {
local main_repo="https://dl.bintray.com/termux/termux-packages-24"
local top_mirrors="${main_repo} https://termux.mentality.rip/termux-packages-24 https://grimler.se/termux-packages-24 https://main.termux-mirror.ml"
local current_mirror
current_mirror=$(grep -P "^\s*deb\s+" @TERMUX_PREFIX@/etc/apt/sources.list | grep -oP 'https?://[a-z0-9/._-]+')
# Do not update mirror if:
# * Uses .cn domain - specific to Chinese users.
# * If $TERMUX_PKG_NO_MIRROR_SELECT was set.
if [ -n "${TERMUX_PKG_NO_MIRROR_SELECT-}" ] || grep -qP '.+\.cn/' <(echo "${current_mirror-x}"); then
return
fi
if [ -n "$(find @TERMUX_PREFIX@/var/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.
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="$m"
break
fi
done
if [ -n "${selected_mirror}" ]; then
echo "deb ${selected_mirror}/ stable main" > @TERMUX_PREFIX@/etc/apt/sources.list
else
echo "Using fallback mirror: ${main_repo}"
echo "deb ${main_repo}/ stable main" > @TERMUX_PREFIX@/etc/apt/sources.list
fi
}
update_apt_cache() {
if [ -z "$(find @TERMUX_PREFIX@/var/cache/apt/pkgcache.bin -mmin -5 2>/dev/null)" ]; then
apt update
fi
}
@ -34,13 +75,25 @@ shift 1
case "$CMD" in
f*) dpkg -L "$@";;
h*) show_help;;
add|i*) check_pkgcache; apt install "$@";;
add|i*)
select_mirror
update_apt_cache
apt install "$@"
;;
list-a*) apt list "$@";;
list-i*) apt list --installed "$@";;
rei*) apt install --reinstall "$@";;
se*) check_pkgcache; apt search "$@";;
se*)
select_mirror
update_apt_cache
apt search "$@"
;;
sh*) apt show "$@";;
un*|rem*|rm|del*) apt remove "$@";;
up*) apt update; apt full-upgrade "$@";;
up*)
select_mirror
apt update
apt full-upgrade "$@"
;;
*) echo "Unknown command: '$CMD' (run 'pkg help' for usage information)"; exit 1;;
esac