bootstrap

#!/bin/sh
#
# NAME
#    bootstrap -- initialize the test container environment
#
# SYNOPSIS
#    bootstrap
#
DOCKER_IP=${DOCKER_IP:-$1}
if [ -z "${DOCKER_IP}" ]
then
  if test -e /var/run/docker.sock
  then
    DOCKER_IP=127.0.0.1
  fi
fi

test -d build || mkdir build

COMPOSE_ARGS="-p tredis"

get_exposed_port() {  #  SERVICE PUBLIC-PORT [INDEX [PROTOCOL]]
  if test -n "$3"
  then
    index="--index=$3"
  fi
  if test -n "$4"
  then
    proto="--protocol=$4"
  fi
  port=$(docker-compose $COMPOSE_ARGS port $index $proto $1 $2 | cut -d: -f2)
  if test -z "$port"
  then
    exit 1
  fi
  echo $port
}

docker-compose ${COMPOSE_ARGS} stop
docker-compose ${COMPOSE_ARGS} rm --force
docker-compose ${COMPOSE_ARGS} up -d redis
docker-compose ${COMPOSE_ARGS} scale redis=2

REDIS1=$(docker inspect --format '{{ .NetworkSettings.Networks.tredis_default.IPAddress }}' tredis_redis_1)
REDIS2=$(docker inspect --format '{{ .NetworkSettings.Networks.tredis_default.IPAddress }}' tredis_redis_2)

echo "Making REDIS2 a slave of REDIS1: "
COMMAND="redis-cli SLAVEOF ${REDIS1} 6379"
docker exec -t -i tredis_redis_2 ${COMMAND}

docker-compose ${COMPOSE_ARGS} up -d node1 node2 node3

NODE1=$(docker inspect --format '{{ .NetworkSettings.Networks.tredis_default.IPAddress }}' tredis_node1_1)
NODE2=$(docker inspect --format '{{ .NetworkSettings.Networks.tredis_default.IPAddress }}' tredis_node2_1)
NODE3=$(docker inspect --format '{{ .NetworkSettings.Networks.tredis_default.IPAddress }}' tredis_node3_1)

# Create a cluster
echo "Creating a redis cluster with 3 nodes"
COMMAND="create --replicas 0 ${NODE1}:6700 ${NODE2}:6701 ${NODE3}:6702"
docker run --network tredis_default --rm -t -i gavinmroy/redis-trib:latest ${COMMAND}

cat > build/test-environment <<EOF
export DOCKER_IP=${DOCKER_IP}
export REDIS_HOST=${DOCKER_IP}
export REDIS_PORT=6379
export REDIS1_IP=${REDIS1}
export REDIS1_PORT=$(get_exposed_port redis 6379 1)
export REDIS2_IP=${REDIS2}
export REDIS2_PORT=$(get_exposed_port redis 6379 2)
export NODE1_IP=${NODE1}
export NODE1_PORT=6700
export NODE2_IP=${NODE2}
export NODE2_PORT=6701
export NODE3_IP=${NODE3}
export NODE3_PORT=6702
EOF
echo "\nDon't forget to 'source build/test-environment'"