#!/bin/bash

# Copyright 2014 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Launches a container and verifies it can be reached. Assumes that
# we're being called by hack/e2e-test.sh (we use some env vars it sets up).

set -o errexit
set -o nounset
set -o pipefail

KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
source "${KUBE_ROOT}/cluster/kube-env.sh"
source "${KUBE_ROOT}/cluster/$KUBERNETES_PROVIDER/util.sh"

# Launch some pods.
num_pods=2
$KUBECFG -p 8080:9376 run kubernetes/serve_hostname ${num_pods} my-hostname

function teardown() {
  echo "Cleaning up test artifacts"
  $KUBECFG stop my-hostname
  $KUBECFG rm my-hostname
}

trap "teardown" EXIT

pod_id_list=$($KUBECFG '-template={{range.items}}{{.id}} {{end}}' -l replicationController=my-hostname list pods)
# Pod turn up on a clean cluster can take a while for the docker image pull.
all_running=0
for i in $(seq 1 24); do
  echo "Waiting for pods to come up."
  sleep 5
  all_running=1
  for id in $pod_id_list; do
    current_status=$($KUBECFG -template '{{.currentState.status}}' get pods/$id) || true
    if [[ "$current_status" != "Running" ]]; then
      all_running=0
      break
    fi
  done
  if [[ "${all_running}" == 1 ]]; then
    break
  fi
done
if [[ "${all_running}" == 0 ]]; then
  echo "Pods did not come up in time"
  exit 1
fi

# Get minion IP addresses
detect-minions

# let images stabilize
echo "Letting images stabilize"
sleep 5

# Verify that something is listening.
for id in ${pod_id_list}; do
  ip=$($KUBECFG -template '{{.currentState.hostIP}}' get pods/$id)
  echo "Trying to reach server that should be running at ${ip}:8080..."
  ok=0
  for i in $(seq 1 5); do
    curl --connect-timeout 1 "http://${ip}:8080" >/dev/null 2>&1 && ok=1 && break
    sleep 2
  done
done

exit 0