if [[ "${ISTIO_ZTUNNEL_BASE_URL}" != "https://storage.googleapis.com/istio-build/ztunnel" ]]; then
  AUTH_HEADER="Authorization: Bearer $(gcloud auth print-access-token)"
  export AUTH_HEADER
fi

ZTUNNEL_REPO_SHA="${ZTUNNEL_REPO_SHA:-$(grep ZTUNNEL_REPO_SHA istio.deps  -A 4 | grep lastStableSHA | cut -f 4 -d '"')}"
ISTIO_ZTUNNEL_VERSION="${ISTIO_ZTUNNEL_VERSION:-${ZTUNNEL_REPO_SHA}}"

* nat
-N ISTIO_INBOUND
-N ISTIO_REDIRECT
-N ISTIO_IN_REDIRECT
-N ISTIO_OUTPUT
-A ISTIO_INBOUND -p tcp --dport 15008 -j RETURN
-A ISTIO_REDIRECT -p tcp -j REDIRECT --to-ports 15001
-A ISTIO_IN_REDIRECT -p tcp -j REDIRECT --to-ports 15006
-A PREROUTING -p tcp -j ISTIO_INBOUND
-A ISTIO_INBOUND -p tcp --dport 1111 -j ISTIO_IN_REDIRECT
-A ISTIO_INBOUND -p tcp --dport 2222 -j ISTIO_IN_REDIRECT
-A OUTPUT -p tcp -j ISTIO_OUTPUT

* All changes should have an associated GitHub issue and/or a release note.
* Large fixes, where the LOC>100 not withstanding unit tests changes, require subject matter expert approval.

# Backporting fixes

* Cherry-picking is discussed in the original PR and subject-matter experts have approved the backport.
    * Behavioral changes should be highly scrutinized, while typo fixes don't require that level of scrutiny.

# For more information see: https://github.com/istio/istio/pull/19322/

BUILD_WITH_CONTAINER ?= 1
CONTAINER_OPTIONS = --mount type=bind,source=/tmp,destination=/tmp --net=host

export COMMONFILES_POSTPROCESS = tools/commonfiles-postprocess.sh

ifeq ($(BUILD_WITH_CONTAINER),1)
# create phony targets for the top-level items in the repo
PHONYS := $(shell ls | grep -v Makefile)
.PHONY: $(PHONYS)
$(PHONYS):

# See the License for the specific language governing permissions and
# limitations under the License.

set -e

WD=$(dirname "$0")
WD=$(cd "$WD"; pwd)

export FOR_BUILD_CONTAINER=1
# shellcheck disable=SC1090,SC1091
source "${WD}/setup_env.sh"


MOUNT_SOURCE="${MOUNT_SOURCE:-${PWD}}"
MOUNT_DEST="${MOUNT_DEST:-/work}"

# To simplify the deployment, disable non-essential components
alertmanager:
  enabled: false
prometheus-pushgateway:
  enabled: false
kube-state-metrics:
  enabled: false
prometheus-node-exporter:
  enabled: false
server:
  podLabels:
    sidecar.istio.io/inject: "false"
  persistentVolume:
    enabled: false
  # Use port 9090 to match Istio documentation
  service:
    servicePort: 9090
  readinessProbeInitialDelay: 0

if [[ "${ISTIO_ENVOY_BASE_URL}" != "https://storage.googleapis.com/istio-build/proxy" ]]; then
  AUTH_HEADER="Authorization: Bearer $(gcloud auth print-access-token)"
  export AUTH_HEADER
fi

SIDECAR="${SIDECAR:-envoy}"

# OS-neutral vars. These currently only work for linux.
ISTIO_ENVOY_VERSION="${ISTIO_ENVOY_VERSION:-${PROXY_REPO_SHA}}"

cd "${ROOTDIR}"

# Get the sha of top commit
# $1 = repo
function getSha() {
  git ls-remote "https://github.com/istio/${1}.git" "refs/heads/${UPDATE_BRANCH}" | cut -f 1
}

make update-common

export GO111MODULE=on
go get -u "istio.io/api@${UPDATE_BRANCH}"
go get -u "istio.io/client-go@${UPDATE_BRANCH}"
go mod tidy

sed -i "s/^BUILDER_SHA=.*\$/BUILDER_SHA=$(getSha release-builder)/" prow/release-commit.sh

function tracing::extract_prow_trace() {
  if [[ "${PROW_JOB_ID:-}" != "" ]]; then
    local trace
    trace="$(<<< "$PROW_JOB_ID" tr -d '\-')"
    local span
    span="${trace:0:16}"
    export TRACEPARENT="01-${trace}-${span}-00"
  fi
}

function _genattrs() {
  # No upstream standard, so copy from https://github.com/jenkinsci/opentelemetry-plugin/blob/master/docs/job-traces.md
  if [[ -n "${PULL_NUMBER:=}" ]]

  # ! 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