while read -r value; do
    CLUSTER_NAMES+=("$value")
  done < <(echo "${KUBE_CLUSTERS}" | jq -r '.cluster_name // .clusterName')

  while read -r value; do
    CLUSTER_POD_SUBNETS+=("$value")
  done < <(echo "${KUBE_CLUSTERS}" | jq -r '.pod_subnet // .podSubnet')

  while read -r value; do
    CLUSTER_SVC_SUBNETS+=("$value")
  done < <(echo "${KUBE_CLUSTERS}" | jq -r '.svc_subnet // .svcSubnet')

if [[ "${1}" == "envfile" ]]; then
  # ! does a variable-variable https://stackoverflow.com/a/10757531/374797
  for var in "${VARS[@]}"; do
    echo "${var}"="${!var}"
  done
else
  for var in "${VARS[@]}"; do
    # shellcheck disable=SC2163
    export "${var}"
  done

# There is no longer an Istio built Envoy binary available for the Mac. Copy the Linux binary as the Mac binary was
# very old and likely no one was really using it (at least temporarily).

# Download Envoy debug and release binaries for Linux x86_64. They will be included in the
# docker images created by Dockerfile.proxyv2.

until curl --output /dev/null --silent --head --fail "$ISTIO_ENVOY_RELEASE_URL"; do
    printf '.'
    sleep $SLEEP_TIME
done
printf '\n'

printf "Verifying %s is available\n" "$ISTIO_ENVOY_ARM_RELEASE_URL"
until curl --output /dev/null --silent --head --fail "$ISTIO_ENVOY_ARM_RELEASE_URL"; do
    printf '.'
    sleep $SLEEP_TIME
done
printf '\n'

# Update the dependency in istio.deps

for f in samples/**/*.yaml; do
  if grep -q -e "{{" "$f" ; then
    echo "Skipping check for helm template $f"
    continue
  else
    echo "Validating $f..."
  $ISTIOCTL validate -x \
    -f "$f"
  fi

    "ci.pipeline.run.id=${PROW_JOB_ID},"\
    "ci.pipeline.run.repo=${REPO_OWNER:-unknown}/${REPO_NAME:-unknown},"\
    "ci.pipeline.run.base=${PULL_BASE_REF:-none},"\
    "ci.pipeline.run.pull_number=${PULL_NUMBER:-none},"\
    "ci.pipeline.run.pull_sha=${PULL_PULL_SHA:-${PULL_BASE_SHA:-none}}"
}

# Usage: tracing::run <span name> [command ...]
function tracing::run() {