# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
#
# WARNING: THIS DOCKERFILE IS NOT INTENDED FOR PRODUCTION USE OR DEPLOYMENT.
#
ARG PYTHON_BASE_IMAGE="python:3.6-slim-buster"
FROM ${PYTHON_BASE_IMAGE} as main

SHELL ["/bin/bash", "-o", "pipefail", "-e", "-u", "-x", "-c"]

ARG PYTHON_BASE_IMAGE="python:3.6-slim-buster"
ENV PYTHON_BASE_IMAGE=${PYTHON_BASE_IMAGE}

ARG AIRFLOW_VERSION="2.0.0.dev0"
ENV AIRFLOW_VERSION=$AIRFLOW_VERSION

ARG PYTHON_MAJOR_MINOR_VERSION="3.6"
ENV PYTHON_MAJOR_MINOR_VERSION=${PYTHON_MAJOR_MINOR_VERSION}

# Print versions
RUN echo "Base image: ${PYTHON_BASE_IMAGE}"
RUN echo "Airflow version: ${AIRFLOW_VERSION}"

# Make sure noninteractive debian install is used and language variables set
ENV DEBIAN_FRONTEND=noninteractive LANGUAGE=C.UTF-8 LANG=C.UTF-8 LC_ALL=C.UTF-8 \
    LC_CTYPE=C.UTF-8 LC_MESSAGES=C.UTF-8

# By increasing this number we can do force build of all dependencies
ARG DEPENDENCIES_EPOCH_NUMBER="4"
# Increase the value below to force renstalling of all dependencies
ENV DEPENDENCIES_EPOCH_NUMBER=${DEPENDENCIES_EPOCH_NUMBER}

# Install curl and gnupg2 - needed to download nodejs in the next step
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
           curl \
           gnupg2 \
    && apt-get autoremove -yqq --purge \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

ARG ADDITIONAL_DEV_DEPS=""
ENV ADDITIONAL_DEV_DEPS=${ADDITIONAL_DEV_DEPS}

# Install basic and additional apt dependencies
RUN curl --fail --location https://deb.nodesource.com/setup_10.x | bash - \
    && curl https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - > /dev/null \
    && echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list \
    && apt-get update \
    && apt-get install -y --no-install-recommends \
           apt-utils \
           build-essential \
           dirmngr \
           dumb-init \
           freetds-bin \
           freetds-dev \
           git \
           graphviz \
           gosu \
           libffi-dev \
           libkrb5-dev \
           libpq-dev \
           libsasl2-2 \
           libsasl2-dev \
           libsasl2-modules \
           libssl-dev \
           libenchant-dev \
           locales  \
           netcat \
           nodejs \
           rsync \
           sasl2-bin \
           sudo \
           unixodbc \
           unixodbc-dev \
           yarn \
           ${ADDITIONAL_DEV_DEPS} \
    && apt-get autoremove -yqq --purge \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Install MySQL client from Oracle repositories (Debian installs mariadb)
RUN KEY="A4A9406876FCBD3C456770C88C718D3B5072E1F5" \
    && GNUPGHOME="$(mktemp -d)" \
    && export GNUPGHOME \
    && for KEYSERVER in $(shuf -e \
            ha.pool.sks-keyservers.net \
            hkp://p80.pool.sks-keyservers.net:80 \
            keyserver.ubuntu.com \
            hkp://keyserver.ubuntu.com:80 \
            pgp.mit.edu) ; do \
          gpg --keyserver "${KEYSERVER}" --recv-keys "${KEY}" && break || true ; \
       done \
    && gpg --export "${KEY}" | apt-key add - \
    && gpgconf --kill all \
    rm -rf "${GNUPGHOME}"; \
    apt-key list > /dev/null \
    && echo "deb http://repo.mysql.com/apt/debian/ stretch mysql-5.7" | tee -a /etc/apt/sources.list.d/mysql.list \
    && apt-get update \
    && apt-get install --no-install-recommends -y \
        libmysqlclient-dev \
        mysql-client \
    && apt-get autoremove -yqq --purge \
    && apt-get clean && rm -rf /var/lib/apt/lists/*

RUN adduser airflow \
    && echo "airflow ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/airflow \
    && chmod 0440 /etc/sudoers.d/airflow

ARG ADDITIONAL_RUNTIME_DEPS=""
ENV ADDITIONAL_RUNTIME_DEPS=${ADDITIONAL_RUNTIME_DEPS}

# Note missing man directories on debian-buster
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863199
RUN mkdir -pv /usr/share/man/man1 \
    && mkdir -pv /usr/share/man/man7 \
    && apt-get update \
    && apt-get install --no-install-recommends -y \
      gnupg \
      libgcc-8-dev \
      apt-transport-https \
      bash-completion \
      ca-certificates \
      software-properties-common \
      krb5-user \
      ldap-utils \
      less \
      # The latest buster images do not have libpython 2.7 installed and it is needed
      # To run virtualenv tests with python 2
      libpython2.7-stdlib \
      lsb-release \
      net-tools \
      openssh-client \
      openssh-server \
      postgresql-client \
      sqlite3 \
      tmux \
      unzip \
      vim \
      ${ADDITIONAL_RUNTIME_DEPS} \
    && apt-get autoremove -yqq --purge \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

ARG DOCKER_CLI_VERSION=19.03.9
ENV DOCKER_CLI_VERSION=${DOCKER_CLI_VERSION}

RUN curl https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_CLI_VERSION}.tgz \
    |  tar -C /usr/bin --strip-components=1 -xvzf - docker/docker

# Setup PIP
# By default PIP install run without cache to make image smaller
ARG PIP_NO_CACHE_DIR="true"
ENV PIP_NO_CACHE_DIR=${PIP_NO_CACHE_DIR}
RUN echo "Pip no cache dir: ${PIP_NO_CACHE_DIR}"

ARG HOME=/root
ENV HOME=${HOME}

ARG AIRFLOW_HOME=/root/airflow
ENV AIRFLOW_HOME=${AIRFLOW_HOME}

ARG AIRFLOW_SOURCES=/opt/airflow
ENV AIRFLOW_SOURCES=${AIRFLOW_SOURCES}

WORKDIR ${AIRFLOW_SOURCES}

RUN mkdir -pv ${AIRFLOW_HOME} && \
    mkdir -pv ${AIRFLOW_HOME}/dags && \
    mkdir -pv ${AIRFLOW_HOME}/logs

# Increase the value here to force reinstalling Apache Airflow pip dependencies
ARG PIP_DEPENDENCIES_EPOCH_NUMBER="3"
ENV PIP_DEPENDENCIES_EPOCH_NUMBER=${PIP_DEPENDENCIES_EPOCH_NUMBER}

# Optimizing installation of Cassandra driver
# Speeds up building the image - cassandra driver without CYTHON saves around 10 minutes
ARG CASS_DRIVER_NO_CYTHON="1"
# Build cassandra driver on multiple CPUs
ARG CASS_DRIVER_BUILD_CONCURRENCY="8"

ENV CASS_DRIVER_BUILD_CONCURRENCY=${CASS_DRIVER_BUILD_CONCURRENCY}
ENV CASS_DRIVER_NO_CYTHON=${CASS_DRIVER_NO_CYTHON}

ARG AIRFLOW_REPO=apache/airflow
ENV AIRFLOW_REPO=${AIRFLOW_REPO}

ARG AIRFLOW_BRANCH=master
ENV AIRFLOW_BRANCH=${AIRFLOW_BRANCH}

# Airflow Extras installed
ARG AIRFLOW_EXTRAS="all"
ARG ADDITIONAL_AIRFLOW_EXTRAS=""
ENV AIRFLOW_EXTRAS=${AIRFLOW_EXTRAS}${ADDITIONAL_AIRFLOW_EXTRAS:+,}${ADDITIONAL_AIRFLOW_EXTRAS}

RUN echo "Installing with extras: ${AIRFLOW_EXTRAS}."

ARG AIRFLOW_CONSTRAINTS_REFERENCE="constraints-master"
ARG AIRFLOW_CONSTRAINTS_URL="https://raw.githubusercontent.com/apache/airflow/${AIRFLOW_CONSTRAINTS_REFERENCE}/constraints-${PYTHON_MAJOR_MINOR_VERSION}.txt"
ENV AIRFLOW_CONSTRAINTS_URL=${AIRFLOW_CONSTRAINTS_URL}

# By changing the CI build epoch we can force reinstalling Arflow from the current master
# It can also be overwritten manually by setting the AIRFLOW_CI_BUILD_EPOCH environment variable.
ARG AIRFLOW_CI_BUILD_EPOCH="2"
ENV AIRFLOW_CI_BUILD_EPOCH=${AIRFLOW_CI_BUILD_EPOCH}

# In case of CI builds we want to pre-install master version of airflow dependencies so that
# We do not have to always reinstall it from the scratch.
# This can be reinstalled from latest master by increasing PIP_DEPENDENCIES_EPOCH_NUMBER.
# And is automatically reinstalled from the scratch every time patch release of python gets released
RUN pip install \
    "https://github.com/${AIRFLOW_REPO}/archive/${AIRFLOW_BRANCH}.tar.gz#egg=apache-airflow[${AIRFLOW_EXTRAS}]" \
        --constraint "${AIRFLOW_CONSTRAINTS_URL}" && pip uninstall --yes apache-airflow;

# Link dumb-init for backwards compatibility (so that older images also work)
RUN ln -sf /usr/bin/dumb-init /usr/local/bin/dumb-init

# Install NPM dependencies here. The NPM dependencies don't change that often and we already have pip
# installed dependencies in case of CI optimised build, so it is ok to install NPM deps here
# Rather than after setup.py is added.
COPY airflow/www/yarn.lock airflow/www/package.json ${AIRFLOW_SOURCES}/airflow/www/

RUN yarn --cwd airflow/www install --frozen-lockfile --no-cache

# Note! We are copying everything with airflow:airflow user:group even if we use root to run the scripts
# This is fine as root user will be able to use those dirs anyway.

# Airflow sources change frequently but dependency configuration won't change that often
# We copy setup.py and other files needed to perform setup of dependencies
# So in case setup.py changes we can install latest dependencies required.
COPY setup.py ${AIRFLOW_SOURCES}/setup.py
COPY setup.cfg ${AIRFLOW_SOURCES}/setup.cfg

COPY airflow/version.py ${AIRFLOW_SOURCES}/airflow/version.py
COPY airflow/__init__.py ${AIRFLOW_SOURCES}/airflow/__init__.py

ARG UPGRADE_TO_LATEST_CONSTRAINTS="false"
ENV UPGRADE_TO_LATEST_CONSTRAINTS=${UPGRADE_TO_LATEST_CONSTRAINTS}

# The goal of this line is to install the dependencies from the most current setup.py from sources
# This will be usually incremental small set of packages in CI optimized build, so it will be very fast
# In non-CI optimized build this will install all dependencies before installing sources.
# Usually we will install versions constrained to the current constraints file
# But in cron job we will install latest versions matching setup.py to see if there is no breaking change
# and push the constraints if everything is successful
RUN \
    if [[ "${UPGRADE_TO_LATEST_CONSTRAINTS}" != "false" ]]; then \
        pip install -e ".[${AIRFLOW_EXTRAS}]" --upgrade --upgrade-strategy eager; \
    else \
        pip install -e ".[${AIRFLOW_EXTRAS}]" \
            --constraint "${AIRFLOW_CONSTRAINTS_URL}" ; \
    fi

# Copy all the www/ files we need to compile assets. Done as two separate COPY
# commands so as otherwise it copies the _contents_ of static/ in to www/
COPY airflow/www/webpack.config.js ${AIRFLOW_SOURCES}/airflow/www/
COPY airflow/www/static ${AIRFLOW_SOURCES}/airflow/www/static/

# Package JS/css for production
RUN yarn --cwd airflow/www run prod

COPY scripts/in_container/entrypoint_ci.sh /entrypoint
RUN chmod a+x /entrypoint

# We can copy everything here. The Context is filtered by dockerignore. This makes sure we are not
# copying over stuff that is accidentally generated or that we do not need (such as .egginfo)
# if you want to add something that is missing and you expect to see it in the image you can
# add it with ! in .dockerignore next to the airflow, test etc. directories there
COPY . ${AIRFLOW_SOURCES}/

# Install autocomplete for airflow
RUN register-python-argcomplete airflow >> ~/.bashrc

# Install autocomplete for Kubeclt
RUN echo "source /etc/bash_completion" >> ~/.bashrc

WORKDIR ${AIRFLOW_SOURCES}

# Additional python deps to install
ARG ADDITIONAL_PYTHON_DEPS=""

RUN if [[ -n "${ADDITIONAL_PYTHON_DEPS}" ]]; then \
        pip install ${ADDITIONAL_PYTHON_DEPS}; \
    fi

WORKDIR ${AIRFLOW_SOURCES}

ENV PATH="${HOME}:${PATH}"

# Needed to stop Gunicorn from crashing when /tmp is now mounted from host
ENV GUNICORN_CMD_ARGS="--worker-tmp-dir /dev/shm/"

ARG BUILD_ID
ENV BUILD_ID=${BUILD_ID}
ARG COMMIT_SHA
ENV COMMIT_SHA=${COMMIT_SHA}

LABEL org.apache.airflow.distro="debian"
LABEL org.apache.airflow.distro.version="buster"
LABEL org.apache.airflow.module="airflow"
LABEL org.apache.airflow.component="airflow"
LABEL org.apache.airflow.image="airflow-ci"
LABEL org.apache.airflow.uid="0"
LABEL org.apache.airflow.gid="0"
LABEL org.apache.airflow.buildId=${BUILD_ID}
LABEL org.apache.airflow.commitSha=${COMMIT_SHA}

EXPOSE 8080

ENTRYPOINT ["/usr/bin/dumb-init", "--", "/entrypoint"]