Add fallback logic in installer for fetching files. (#17045)
Still try to use `curl` first if it exists, but if it fails, fall back to attempting with wget instead.
This commit is contained in:
Austin S. Hemmelgarn
GitHub
parent
9d9fbfbdbb
commit
42595b3f26
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@ -103,13 +103,33 @@ check_for_curl() {
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get() {
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url="${1}"
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checked=0
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succeeded=0
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check_for_curl
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if [ -n "${curl}" ]; then
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"${curl}" -q -o - -sSL --connect-timeout 10 --retry 3 "${url}"
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elif command -v wget > /dev/null 2>&1; then
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wget -T 15 -O - "${url}"
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checked=1
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if "${curl}" -q -o - -sSL --connect-timeout 10 --retry 3 "${url}"; then
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succeeded=1
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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checked=1
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if wget -T 15 -O - "${url}"; then
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succeeded=1
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fi
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fi
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fi
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if [ "${succeeded}" -eq 1 ]; then
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return 0
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elif [ "${checked}" -eq 1 ]; then
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return 1
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else
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fatal "I need curl or wget to proceed, but neither is available on this system." "L0002"
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fi
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@ -124,9 +144,29 @@ download_file() {
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check_for_curl
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if [ -n "${curl}" ]; then
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run "${curl}" -q -sSL --connect-timeout 10 --retry 3 --output "${dest}" "${url}"
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elif command -v wget > /dev/null 2>&1; then
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run wget -T 15 -O "${dest}" "${url}"
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checked=1
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if run "${curl}" -q -sSL --connect-timeout 10 --retry 3 --output "${dest}" "${url}"; then
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succeeded=1
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else
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rm -f "${dest}"
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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checked=1
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if run wget -T 15 -O "${dest}" "${url}"; then
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succeeded=1
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fi
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fi
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fi
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if [ "${succeeded}" -eq 1 ]; then
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return 0
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elif [ "${checked}" -eq 1 ]; then
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return 1
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else
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echo >&2
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echo >&2 "Downloading ${name} from '${url}' failed because of missing mandatory packages."
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@ -311,23 +311,31 @@ telemetry_event() {
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EOF
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)"
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succeeded=0
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if [ -n "${CURL}" ]; then
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"${CURL}" --silent -o /dev/null -X POST --max-time 2 --header "Content-Type: application/json" -d "${REQ_BODY}" "${TELEMETRY_URL}" > /dev/null
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elif command -v wget > /dev/null 2>&1; then
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if wget --help 2>&1 | grep BusyBox > /dev/null 2>&1; then
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# BusyBox-compatible version of wget, there is no --no-check-certificate option
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wget -q -O - \
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-T 1 \
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--header 'Content-Type: application/json' \
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--post-data "${REQ_BODY}" \
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"${TELEMETRY_URL}" > /dev/null
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else
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wget -q -O - --no-check-certificate \
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--method POST \
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--timeout=1 \
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--header 'Content-Type: application/json' \
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--body-data "${REQ_BODY}" \
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"${TELEMETRY_URL}" > /dev/null
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if "${CURL}" --silent -o /dev/null -X POST --max-time 2 --header "Content-Type: application/json" -d "${REQ_BODY}" "${TELEMETRY_URL}" > /dev/null; then
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succeeded=1
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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if wget --help 2>&1 | grep BusyBox > /dev/null 2>&1; then
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# BusyBox-compatible version of wget, there is no --no-check-certificate option
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wget -q -O - \
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-T 1 \
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--header 'Content-Type: application/json' \
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--post-data "${REQ_BODY}" \
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"${TELEMETRY_URL}" > /dev/null
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else
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wget -q -O - --no-check-certificate \
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--method POST \
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--timeout=1 \
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--header 'Content-Type: application/json' \
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--body-data "${REQ_BODY}" \
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"${TELEMETRY_URL}" > /dev/null
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fi
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fi
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fi
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}
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@ -605,15 +613,38 @@ set_tmpdir() {
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check_for_remote_file() {
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url="${1}"
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succeeded=0
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checked=0
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if echo "${url}" | grep -Eq "^file:///"; then
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[ -e "${url#file://}" ] || return 1
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return 0
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elif [ -n "${NETDATA_ASSUME_REMOTE_FILES_ARE_PRESENT}" ]; then
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return 0
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elif [ -n "${CURL}" ]; then
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"${CURL}" --output /dev/null --silent --head --fail "${url}" || return 1
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elif command -v wget > /dev/null 2>&1; then
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wget -S --spider "${url}" 2>&1 | grep -q 'HTTP/1.1 200 OK' || return 1
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fi
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if [ -n "${CURL}" ]; then
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checked=1
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if "${CURL}" --output /dev/null --silent --head --fail "${url}"; then
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succeeded=1
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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checked=1
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if wget -S --spider "${url}" 2>&1 | grep -q 'HTTP/1.1 200 OK'; then
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succeeded=1
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fi
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fi
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fi
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if [ "${succeeded}" -eq 1 ]; then
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return 0
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elif [ "${checked}" -eq 1 ]; then
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return 1
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else
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fatal "${ERROR_F0003}" F0003
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fi
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@ -622,13 +653,39 @@ check_for_remote_file() {
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download() {
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url="${1}"
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dest="${2}"
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succeeded=0
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checked=0
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if echo "${url}" | grep -Eq "^file:///"; then
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run cp "${url#file://}" "${dest}" || return 1
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elif [ -n "${CURL}" ]; then
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run "${CURL}" --fail -q -sSL --connect-timeout 10 --retry 3 --output "${dest}" "${url}" || return 1
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elif command -v wget > /dev/null 2>&1; then
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run wget -T 15 -O "${dest}" "${url}" || return 1
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return 0
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fi
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if [ -n "${CURL}" ]; then
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checked=1
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if run "${CURL}" --fail -q -sSL --connect-timeout 10 --retry 3 --output "${dest}" "${url}"; then
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succeeded=1
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else
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rm -f "${dest}"
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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checked=1
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if run wget -T 15 -O "${dest}" "${url}"; then
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succeeded=1
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fi
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fi
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fi
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if [ "${succeeded}" -eq 1 ]; then
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return 0
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elif [ "${checked}" -eq 1 ]; then
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return 1
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else
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fatal "${ERROR_F0003}" F0003
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fi
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@ -652,11 +709,31 @@ get_actual_version() {
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get_redirect() {
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url="${1}"
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succeeded=0
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checked=0
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if [ -n "${CURL}" ]; then
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run sh -c "${CURL} ${url} -s -L -I -o /dev/null -w '%{url_effective}' | grep -Eo '[^/]+$'" || return 1
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elif command -v wget > /dev/null 2>&1; then
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run sh -c "wget -S -O /dev/null ${url} 2>&1 | grep -m 1 Location | grep -Eo '[^/]+$'" || return 1
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checked=1
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if run sh -c "${CURL} ${url} -s -L -I -o /dev/null -w '%{url_effective}' | grep -Eo '[^/]+$'"; then
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succeeded=1
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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checked=1
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if run sh -c "wget -S -O /dev/null ${url} 2>&1 | grep -m 1 Location | grep -Eo '[^/]+$'"; then
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succeeded=1
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fi
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fi
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fi
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if [ "${succeeded}" -eq 1 ]; then
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return 0
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elif [ "${checked}" -eq 1 ]; then
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return 1
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else
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fatal "${ERROR_F0003}" F0003
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fi
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@ -396,15 +396,37 @@ check_for_curl() {
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_safe_download() {
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url="${1}"
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dest="${2}"
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succeeded=0
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checked=0
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check_for_curl
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if [ -n "${curl}" ]; then
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"${curl}" -fsSL --connect-timeout 10 --retry 3 "${url}" > "${dest}"
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return $?
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elif command -v wget > /dev/null 2>&1; then
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wget -T 15 -O - "${url}" > "${dest}"
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return $?
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checked=1
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if "${curl}" -fsSL --connect-timeout 10 --retry 3 "${url}" > "${dest}"; then
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succeeded=1
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else
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rm -f "${dest}"
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fi
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fi
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if [ "${succeeded}" -eq 0 ]; then
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if command -v wget > /dev/null 2>&1; then
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checked=1
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if wget -T 15 -O - "${url}" > "${dest}"; then
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succeeded=1
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else
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rm -f "${dest}"
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fi
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fi
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fi
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if [ "${succeeded}" -eq 1 ]; then
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return 0
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elif [ "${checked}" -eq 1 ]; then
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return 1
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else
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return 255
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fi
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@ -432,13 +454,21 @@ get_netdata_latest_tag() {
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check_for_curl
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if [ -n "${curl}" ]; then
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tag=$("${curl}" "${url}" -s -L -I -o /dev/null -w '%{url_effective}' | grep -Eom 1 '[^/]*/?$')
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elif command -v wget >/dev/null 2>&1; then
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tag=$(wget -S -O /dev/null "${url}" 2>&1 | grep -m 1 Location | grep -Eo '[^/]*/?$')
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else
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tag=$("${curl}" "${url}" -s -L -I -o /dev/null -w '%{url_effective}')
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fi
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if [ -z "${tag}" ]; then
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if command -v wget >/dev/null 2>&1; then
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tag=$(wget -S -O /dev/null "${url}" 2>&1 | grep Location)
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fi
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fi
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if [ -z "${tag}" ]; then
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fatal "I need curl or wget to proceed, but neither of them are available on this system." U0006
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fi
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tag="$(echo "${tag}" | grep -Eom 1 '[^/]*/?$')"
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# Fallback case for simpler local testing.
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if echo "${tag}" | grep -Eq 'latest/?$'; then
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if _safe_download "${url}/latest-version.txt" ./ndupdate-version.txt; then
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