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Determinisitically get kubectl proxy port

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This commit is contained in:
Daniel Smith
2016-01-27 17:09:52 -08:00
parent 2aff6ccf06
commit 22b43d8f82
1 changed files with 25 additions and 12 deletions
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37
hack/test-cmd.sh
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@@ -28,9 +28,12 @@ source "${KUBE_ROOT}/hack/lib/test.sh"
# Stops the running kubectl proxy, if there is one.
function stop-proxy()
{
[[ -n "${PROXY_PORT-}" ]] && kube::log::status "Stopping proxy on port ${PROXY_PORT}"
[[ -n "${PROXY_PID-}" ]] && kill "${PROXY_PID}" 1>&2 2>/dev/null
[[ -n "${PROXY_PORT_FILE-}" ]] && rm -f ${PROXY_PORT_FILE}
PROXY_PID=
PROXY_PORT=
PROXY_PORT_FILE=
}
# Starts "kubect proxy" to test the client proxy. $1: api_prefix
@@ -38,22 +41,32 @@ function start-proxy()
{
stop-proxy
kube::log::status "Starting kubectl proxy"
PROXY_PORT_FILE=$(mktemp proxy-port.out.XXXXX)
kube::log::status "Starting kubectl proxy on random port; output file in ${PROXY_PORT_FILE}; args: ${1-}"
for retry in $(seq 1 3); do
PROXY_PORT=$(kube::util::get_random_port)
kube::log::status "On try ${retry}, use proxy port ${PROXY_PORT} if it's free"
if kube::util::test_host_port_free "127.0.0.1" "${PROXY_PORT}"; then
if [ $# -eq 0 ]; then
kubectl proxy -p ${PROXY_PORT} --www=. 1>&2 & break
else
kubectl proxy -p ${PROXY_PORT} --www=. --api-prefix="$1" 1>&2 & break
fi
if [ $# -eq 0 ]; then
kubectl proxy --port=0 --www=. 1>${PROXY_PORT_FILE} 2>&1 &
else
kubectl proxy --port=0 --www=. --api-prefix="$1" 1>${PROXY_PORT_FILE} 2>&1 &
fi
PROXY_PID=$!
PROXY_PORT=
local attempts=0
while [[ -z ${PROXY_PORT} ]]; do
if (( ${attempts} > 9 )); then
kill "${PROXY_PID}"
kube::log::error_exit "Couldn't start proxy. Failed to read port after ${attempts} tries. Got: $(cat ${PROXY_PORT_FILE})"
fi
sleep 1;
sleep .5
kube::log::status "Attempt ${attempts} to read ${PROXY_PORT_FILE}..."
PROXY_PORT=$(sed 's/.*Starting to serve on 127.0.0.1:\([0-9]*\)$/\1/'< ${PROXY_PORT_FILE})
attempts=$((attempts+1))
done
PROXY_PID=$!
kube::log::status "kubectl proxy running on port ${PROXY_PORT}"
# We try checking kubectl proxy 30 times with 1s delays to avoid occasional
# failures.
if [ $# -eq 0 ]; then