MeiliSearch/download-latest.sh
Clémentine Urquizar - curqui c3ecdb3d8b
Update download-latest.sh
2022-10-17 15:20:00 +02:00

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#!/bin/sh
# GLOBALS
# Colors
RED='\033[31m'
GREEN='\033[32m'
DEFAULT='\033[0m'
# Project name
PNAME='meilisearch'
# Version regexp i.e. v[number].[number].[number]
GREP_SEMVER_REGEXP='v\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)$'
# GitHub API address
GITHUB_API='https://api.github.com/repos/meilisearch/meilisearch/releases'
# GitHub Release address
GITHUB_REL='https://github.com/meilisearch/meilisearch/releases/download/'
# FUNCTIONS
# semverParseInto and semverLT from: https://github.com/cloudflare/semver_bash/blob/master/semver.sh
# usage: semverParseInto version major minor patch special
# version: the string version
# major, minor, patch, special: will be assigned by the function
semverParseInto() {
local RE='[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([0-9A-Za-z-]*\)'
# MAJOR
eval $2=`echo $1 | sed -e "s#$RE#\1#"`
# MINOR
eval $3=`echo $1 | sed -e "s#$RE#\2#"`
# PATCH
eval $4=`echo $1 | sed -e "s#$RE#\3#"`
# SPECIAL
eval $5=`echo $1 | sed -e "s#$RE#\4#"`
}
# usage: semverLT version1 version2
semverLT() {
local MAJOR_A=0
local MINOR_A=0
local PATCH_A=0
local SPECIAL_A=0
local MAJOR_B=0
local MINOR_B=0
local PATCH_B=0
local SPECIAL_B=0
semverParseInto $1 MAJOR_A MINOR_A PATCH_A SPECIAL_A
semverParseInto $2 MAJOR_B MINOR_B PATCH_B SPECIAL_B
if [ $MAJOR_A -lt $MAJOR_B ]; then
return 0
fi
if [ $MAJOR_A -le $MAJOR_B ] && [ $MINOR_A -lt $MINOR_B ]; then
return 0
fi
if [ $MAJOR_A -le $MAJOR_B ] && [ $MINOR_A -le $MINOR_B ] && [ $PATCH_A -lt $PATCH_B ]; then
return 0
fi
if [ "_$SPECIAL_A" == '_' ] && [ "_$SPECIAL_B" == '_' ] ; then
return 1
fi
if [ "_$SPECIAL_A" == '_' ] && [ "_$SPECIAL_B" != '_' ] ; then
return 1
fi
if [ "_$SPECIAL_A" != '_' ] && [ "_$SPECIAL_B" == '_' ] ; then
return 0
fi
if [ "_$SPECIAL_A" < "_$SPECIAL_B" ]; then
return 0
fi
return 1
}
# Get a token from: https://github.com/settings/tokens to increase rate limit (from 60 to 5000),
# make sure the token scope is set to 'public_repo'.
# Create GITHUB_PAT environment variable once you acquired the token to start using it.
# Returns the tag of the latest stable release (in terms of semver and not of release date).
get_latest() {
# temp_file is needed because the grep would start before the download is over
temp_file=$(mktemp -q /tmp/$PNAME.XXXXXXXXX)
if [ $? -ne 0 ]; then
echo "$0: Can't create temp file, bye bye.."
exit 1
fi
if [ -z "$GITHUB_PAT" ]; then
curl -s $GITHUB_API > "$temp_file" || return 1
else
curl -H "Authorization: token $GITHUB_PAT" -s $GITHUB_API > "$temp_file" || return 1
fi
releases=$(cat "$temp_file" | \
grep -E '"tag_name":|"draft":|"prerelease":' \
| tr -d ',"' | cut -d ':' -f2 | tr -d ' ')
# Returns a list of [tag_name draft_boolean prerelease_boolean ...]
# Ex: v0.10.1 false false v0.9.1-rc.1 false true v0.9.0 false false...
i=0
latest=''
current_tag=''
for release_info in $releases; do
# Checking tag_name
if [ $i -eq 0 ]; then
# If it's not an alpha or beta release
if echo "$release_info" | grep -q "$GREP_SEMVER_REGEXP"; then
current_tag=$release_info
else
current_tag=''
fi
i=1
# Checking draft boolean
elif [ $i -eq 1 ]; then
if [ "$release_info" = 'true' ]; then
current_tag=''
fi
i=2
# Checking prerelease boolean
elif [ $i -eq 2 ]; then
if [ "$release_info" = 'true' ]; then
current_tag=''
fi
i=0
# If the current_tag is valid
if [ "$current_tag" != '' ]; then
# If there is no latest yes
if [ "$latest" = '' ]; then
latest="$current_tag"
else
# Comparing latest and the current tag
semverLT $current_tag $latest
if [ $? -eq 1 ]; then
latest="$current_tag"
fi
fi
fi
fi
done
rm -f "$temp_file"
return 0
}
# Gets the OS by setting the $os variable.
# Returns 0 in case of success, 1 otherwise.
get_os() {
os_name=$(uname -s)
case "$os_name" in
'Darwin')
os='macos'
;;
'Linux')
os='linux'
;;
'MINGW'*)
os='windows'
;;
*)
return 1
esac
return 0
}
# Gets the architecture by setting the $archi variable.
# Returns 0 in case of success, 1 otherwise.
get_archi() {
architecture=$(uname -m)
case "$architecture" in
'x86_64' | 'amd64' )
archi='amd64'
;;
'arm64')
# MacOS M1
if [ $os = 'macos' ]; then
archi='amd64'
else
archi='aarch64'
fi
;;
'aarch64')
archi='aarch64'
;;
*)
return 1
esac
return 0
}
success_usage() {
printf "$GREEN%s\n$DEFAULT" "Meilisearch $latest binary successfully downloaded as '$binary_name' file."
echo ''
echo 'Run it:'
echo " $ ./$PNAME"
echo 'Usage:'
echo " $ ./$PNAME --help"
}
not_available_failure_usage() {
printf "$RED%s\n$DEFAULT" 'ERROR: Meilisearch binary is not available for your OS distribution or your architecture yet.'
echo ''
echo 'However, you can easily compile the binary from the source files.'
echo 'Follow the steps at the page ("Source" tab): https://docs.meilisearch.com/learn/getting_started/installation.html'
}
fetch_release_failure_usage() {
echo ''
printf "$RED%s\n$DEFAULT" 'ERROR: Impossible to get the latest stable version of Meilisearch.'
echo 'Please let us know about this issue: https://github.com/meilisearch/meilisearch/issues/new/choose'
}
fill_release_variables() {
# Fill $latest variable.
if ! get_latest; then
# TO CHANGE.
fetch_release_failure_usage
exit 1
fi
if [ "$latest" = '' ]; then
fetch_release_failure_usage
exit 1
fi
# Fill $os variable.
if ! get_os; then
not_available_failure_usage
exit 1
fi
# Fill $archi variable.
if ! get_archi; then
not_available_failure_usage
exit 1
fi
}
download_binary() {
fill_release_variables
echo "Downloading Meilisearch binary $latest for $os, architecture $archi..."
case "$os" in
'windows')
release_file="$PNAME-$os-$archi.exe"
binary_name="$PNAME.exe"
;;
*)
release_file="$PNAME-$os-$archi"
binary_name="$PNAME"
esac
# Fetch the Meilisearch binary.
curl --fail -OL "$GITHUB_REL/$latest/$release_file"
if [ $? -ne 0 ]; then
fetch_release_failure_usage
exit 1
fi
mv "$release_file" "$binary_name"
chmod 744 "$binary_name"
success_usage
}
# MAIN
main() {
download_binary
}
main