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Merge pull request #756 from joakimr-axis/joakimr-axis_wget 

install.sh: Add wget fallback if curl isn't available
pull/822/head
Erik Wilson 2019-09-18 15:55:42 -07:00 committed by GitHub
parent 36ca606073 a0d2743868
commit ad7b2e0a5d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 43 additions and 9 deletions
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52
install.sh
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@ -67,6 +67,7 @@ set -e
# if not specified.
GITHUB_URL=https://github.com/rancher/k3s/releases
DOWNLOADER=
# --- helper functions for logs ---
info()
@ -260,11 +261,14 @@ setup_verify_arch() {
esac
}
# --- fatal if no curl ---
verify_curl() {
if [ -z $(which curl || true) ]; then
fatal "Can not find curl for downloading files"
fi
# --- verify existence of network downloader executable ---
verify_downloader() {
# Return failure if it doesn't exist or is no executable
[ -x "$(which $1)" ] || return 1
# Set verified executable as our downloader program and return success
DOWNLOADER=$1
return 0
}
# --- create tempory directory and cleanup when done ---
@ -288,16 +292,46 @@ get_release_version() {
VERSION_K3S="${INSTALL_K3S_VERSION}"
else
info "Finding latest release"
VERSION_K3S=$(curl -w "%{url_effective}" -I -L -s -S ${GITHUB_URL}/latest -o /dev/null | sed -e 's|.*/||')
case $DOWNLOADER in
curl)
VERSION_K3S=$(curl -w '%{url_effective}' -I -L -s -S ${GITHUB_URL}/latest -o /dev/null | sed -e 's|.*/||')
;;
wget)
VERSION_K3S=$(wget -SqO /dev/null ${GITHUB_URL}/latest 2>&1 | grep Location | sed -e 's|.*/||')
;;
*)
fatal "Incorrect downloader executable '$DOWNLOADER'"
;;
esac
fi
info "Using ${VERSION_K3S} as release"
}
# --- download from github url ---
download() {
[ $# -eq 2 ] || fatal 'download needs exactly 2 arguments'
case $DOWNLOADER in
curl)
curl -o $1 -sfL $2
;;
wget)
wget -qO $1 $2
;;
*)
fatal "Incorrect executable '$DOWNLOADER'"
;;
esac
# Abort if download command failed
[ $? -eq 0 ] || fatal 'Download failed'
}
# --- download hash from github url ---
download_hash() {
HASH_URL=${GITHUB_URL}/download/${VERSION_K3S}/sha256sum-${ARCH}.txt
info "Downloading hash ${HASH_URL}"
curl -o ${TMP_HASH} -sfL ${HASH_URL} || fatal "Hash download failed"
download ${TMP_HASH} ${HASH_URL}
HASH_EXPECTED=$(grep " k3s${SUFFIX}$" ${TMP_HASH} | awk '{print $1}')
}
@ -316,7 +350,7 @@ installed_hash_matches() {
download_binary() {
BIN_URL=${GITHUB_URL}/download/${VERSION_K3S}/k3s${SUFFIX}
info "Downloading binary ${BIN_URL}"
curl -o ${TMP_BIN} -sfL ${BIN_URL} || fatal "Binary download failed"
download ${TMP_BIN} ${BIN_URL}
}
# --- verify downloaded binary hash ---
@ -359,7 +393,7 @@ download_and_verify() {
fi
setup_verify_arch
verify_curl
verify_downloader curl || verify_downloader wget || fatal 'Can not find curl or wget for downloading files'
setup_tmp
get_release_version
download_hash