Added second test.

Simple communication test that involes 4 docker containers:

- AMQP client (container_name: test_client, file to run test_client.py)

- AMQP server (container_name: transfer_service)

- RabbitMQ (container_name: rabbitmq)

- Redis (container_name: redis)

Furthermore, other 2 containers have been added:

- Tape library frontend, a.k.a. Lenovo (container_name: tape_frontend)

- Transfer node (container_name: transfer_node)

Start the whole environment with (launch the command from the 'docker' dir):

$ docker-compose up

Once all the containers are up and running, open another shell and access the test_client container:

$ docker exec -it test_client /bin/bash

At this point you can launch the test_client.py within the test_client container:

$ python test_client.py

The output should be something like this:

     test_client@6a11611d604f:~$ python test_client.py 

     Sending transfer request...

     Response:

     {

        "jobID": "b85e3fb8db0b11ea8d110242c0a8d006",

        "phase": "RUN",

        "quote": null,

        "startTime": null,

        "endTime": null,

        "executionDuration": null,

        "destruction": null,

        "parameters": null,

        "jobInfo": {

           "transfer": {

              "@version": "2.1",

              "target": "vos://example.com!vospace/mydata1",

              "direction": "pullFromVoSpace",

              "protocol": {

                 "@uri": "ivo://ivoa.net/vospace/core#httpget"

              }

           }

        }

     }

You can access the rabbitmq web interface via browser:

    1) Find the IP address of the RabbitMQ broker:

    $ docker network inspect docker_vospace_backend_net | grep -i -A 3 rabbitmq

    2) Open your browser and point it to http://IP_ADDRESS:15672 (user: guest, password: guest)

 Stop the whole environment with:

 $ docker-compose down

 Cleanup:

 $ docker image prune -a

 $ docker volume prune

 No newline at end of file

version: '2.0'

services:

  redis:

    image: redis

    container_name: redis

    networks:

    - vospace_backend_net

    ports:

    - "6379:6379"

  rabbitmq:

    image: rabbitmq:3-management

    container_name: rabbitmq

    depends_on:

    - redis

    networks:

    - vospace_backend_net

    ports:

    - "5672:5672"

    - "15672:15672"

    stdin_open: true

    tty: true

  tape_frontend:

    build: ./tape_frontend

    container_name: tape_frontend

    networks:

    - vospace_backend_net

    stdin_open: true

    tty: true

  transfer_node:

    build: ./transfer_node

    container_name: transfer_node

    depends_on:

    - tape_frontend

    networks:

    - vospace_backend_net

    stdin_open: true

    tty: true

  transfer_service:

    build: ./transfer_service

    container_name: transfer_service

    depends_on:

    - rabbitmq

    networks:

    - vospace_backend_net

    stdin_open: true

    tty: true

    command: ["./wait-for-it.sh", "rabbitmq:5672", "--", "python3", "transfer_service.py"]

  test_client:

    build: ./test_client

    container_name: test_client

    networks:

    - vospace_backend_net

    stdin_open: true

    tty: true

networks:

  vospace_backend_net:

# Use CentOS 7 as base image

FROM centos:7

# Check for updates and install them

RUN yum -y update

# Install epel repo

RUN yum -y install epel-release

# Install xrootd-server package and python bindings

RUN yum -y install xrootd-server python36-xrootd

# Copy authentication directives config file and set the right permissions

COPY auth_file /etc/xrootd/

RUN chown xrootd:xrootd /etc/xrootd/auth_file && \

    chmod 0644 /etc/xrootd/auth_file

# Create a new user called centos, create the home directory and set the default shell

RUN useradd -m -s /bin/bash centos

# Switch to centos user

USER centos

# Set home environment variable

ENV HOME=/home/centos/

# Set the HOME as working directory

WORKDIR $HOME

# Copy xrootd main config file into the current work dir

COPY xrootd.cfg .

# Create a dir with some data to expose

RUN mkdir data

COPY aaa ./data/aaa

# Execute xrootd service to expose data

CMD /bin/xrootd -c xrootd.cfg ${HOME}/data

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