# Copyright 2018 AT&T Intellectual Property.  All other 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.

# Docker image to run Airflow on Kubernetes
ARG FROM=opensuse/leap:15.1
FROM ${FROM}

LABEL org.opencontainers.image.authors='airship-discuss@lists.airshipit.org, irc://#airshipit@freenode' \
      org.opencontainers.image.url='https://airshipit.org' \
      org.opencontainers.image.documentation='https://airship-shipyard.readthedocs.org' \
      org.opencontainers.image.source='https://opendev.org/airship/shipyard' \
      org.opencontainers.image.vendor='The Airship Authors' \
      org.opencontainers.image.licenses='Apache-2.0'

# Do not prompt user for choices on installation/configuration of packages
# Set port 8080 for Airflow Web
# Set port 5555 for Airflow Flower
# Set port 8793 for Airflow Worker
ENV container docker
ENV WEB_PORT 8080
ENV FLOWER_PORT 5555
ENV WORKER_PORT 8793
ENV SLUGIFY_USES_TEXT_UNIDECODE yes

# Expose port for applications
EXPOSE $WEB_PORT
EXPOSE $FLOWER_PORT
EXPOSE $WORKER_PORT

# Set ARG for usage during build
ARG AIRFLOW_HOME=/usr/local/airflow
ARG AIRFLOW_SRC="apache-airflow[crypto,celery,postgres,hive,hdfs,jdbc]==1.10.5"
ARG ctx_base=src/bin

# Kubectl version
ARG KUBECTL_VERSION=1.16.2

# Needed from apache-airflow 1.10.2, since core.airflow_home config is deprecated
ENV AIRFLOW_HOME=${AIRFLOW_HOME}

RUN set -ex && \
    zypper -q update -y ;\
    zypper --non-interactive install --no-recommends \
        ca-certificates \
        curl \
        git-core \
        gcc-c++ \
        libffi-devel \
        libopenssl-devel \
        libpqxx-devel \
        gcc-locale \
        netcat-openbsd \
        netcfg \
        which \
        python3 \
        python3-setuptools \
        python3-pip \
        python3-devel \
        python3-python-dateutil \
        make

RUN pip3 install -U pip \
    && zypper clean -a \
    && rm -rf \
        /tmp/* \
        /var/tmp/* \
        /var/log/* \
        /usr/share/man \
        /usr/share/doc \
        /usr/share/doc-base

# Explicitly need to create usergroup with same name in suse
RUN useradd -U -ms /bin/bash -d ${AIRFLOW_HOME} airflow

# Things that change mostly infrequently
RUN curl -L -o /usr/local/bin/kubectl \
       https://storage.googleapis.com/kubernetes-release/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl \
    && chmod +x /usr/local/bin/kubectl

# Dependency requirements
# Note - removing snakebite (python 2 vs. 3). See:
#    https://github.com/puckel/docker-airflow/issues/77
COPY images/airflow/requirements.txt /tmp/
RUN pip3 install -r /tmp/requirements.txt --no-cache-dir \
    && pip3 uninstall -y snakebite || true

# Copy scripts used in the container:
COPY images/airflow/script/*.sh ${AIRFLOW_HOME}/

# Copy configuration (e.g. logging config for Airflow):
COPY images/airflow/config/*.py ${AIRFLOW_HOME}/config/

# Change permissions
RUN chown -R airflow:airflow ${AIRFLOW_HOME}

# Setting the version explicitly for PBR
ENV PBR_VERSION 0.1a1

# Shipyard
#
# Shipyard provides core functionality used by the Airflow plugins/operators
# Since Shipyard and Airflow are built together as images, this should prevent
# stale or out-of-date code between these parts.
# Shipyard requirements, source and installation
COPY ${ctx_base}/shipyard_airflow/requirements.txt /tmp/api_requirements.txt
RUN pip3 install -r /tmp/api_requirements.txt --no-cache-dir \
    && pip3 install $AIRFLOW_SRC --no-cache-dir

COPY ${ctx_base}/shipyard_airflow /tmp/shipyard/
RUN cd /tmp/shipyard \
    && python3 setup.py install

# Note: The value for the dags and plugins directories that are sourced
# from the values.yaml of the Shipyard Helm chart need to align with these
# directories. If they do not, airflow will not find the intended dags and
# plugins.
#
# Note: In the case of building images using the provided Makefile, a test is
# run against the built-in dags provided with Airflow. Since there is no Helm
# chart to reconfigure the airflow.cfg with these directories, these dags and
# plugins are not known to Airflow during the image test.
#
# Copy the plugins and dags that will be used by this Airflow image:
COPY ${ctx_base}/shipyard_airflow/shipyard_airflow/plugins ${AIRFLOW_HOME}/plugins/
COPY ${ctx_base}/shipyard_airflow/shipyard_airflow/dags ${AIRFLOW_HOME}/dags/

# Set work directory
USER airflow
WORKDIR ${AIRFLOW_HOME}

# Execute entrypoint
ENTRYPOINT ["./entrypoint.sh"]