Replacing a1-python with a1-go implementation

Replacing a1-python with a1-go implementation

Signed-off-by: naman.gupta <naman.gupta@samsung.com>
Change-Id: I42b5c87c41a2efc25ac1cd63bc53e969882de24a
diff --git a/Dockerfile b/Dockerfile
index 2b56529..a9e6c15 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,131 +1,125 @@
-# ==================================================================================
-#       Copyright (c) 2019-2020 Nokia
-#       Copyright (c) 2018-2020 AT&T Intellectual Property.
+#   Copyright (c) 2021 Samsung.
 #
 #   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
+#       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.
-# ==================================================================================
 
-# This builds an image for A1 based on ubuntu. The build takes between three and four
-# minutes depending on what was previously cached, and results in an image that is
-# roughly 260 MiB in size (as of May 2021)
-#
+#-----------------------------------------------------------
 
-FROM python:3.8 as build
-
-# upgrade pip as root
-RUN pip install --upgrade pip
-
-# pick up things for gevent build
-#
-RUN apt-get update
-RUN apt-get install -y gcc musl-dev make file libffi-dev g++
-
-# --- all root operations must be above this line ------------------------------------
+FROM nexus3.o-ran-sc.org:10002/o-ran-sc/bldr-ubuntu20-c-go:1.1.0 AS a1-build
 
 
-# create a simple user.  This is only really needed in stage 2,
-# however this makes the copying easier and straighttforward;
-# the 'pip option --user' command  doesn't do the same thing when
-# run as root.
-#
-RUN addgroup a1user && adduser --ingroup a1user a1user
-
-# switch to the non-root user for installing python things
-USER a1user
-
-# Speed hack; we install gevent before anything because when building repeatedly (eg during dev)
-# and only changing a1 code, we do not need to keep compiling gevent which takes forever
-RUN pip install --user gevent
-RUN pip install --user requests
-
-COPY setup.py /home/a1user/
-COPY a1/ /home/a1user/a1
-RUN pip install --user /home/a1user
+#TODO check why defualt golang is not working
+ARG GOVERSION="1.18.5"
+RUN wget -nv https://dl.google.com/go/go${GOVERSION}.linux-amd64.tar.gz \
+     && tar -xf go${GOVERSION}.linux-amd64.tar.gz \
+     && mv go /opt/go/${GOVERSION} \
+     && rm -f go*.gz
 
 
+ENV DEFAULTPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV PATH=$DEFAULTPATH:/usr/local/go/bin:/opt/go/${GOVERSION}/bin:/root/go/bin
 
-# ----- stage 2  ---------------------------------------------------------------------------------
+RUN apt-get update -y && apt-get install -y jq
 
-# It might be tempting to use python:3.8, but that image is more than
-# 800 GiB to start, and the final image size if it is used is over
-# 1 GiB!!  Using the plain ubuntu image, then installing py3, and taking
-# things built in the first stage, the final image size isn't tiny, but should
-# be well under the 800GiB start for the python image.
-#
-FROM ubuntu:20.04
+# Update CA certificates
+RUN apt update && apt install --reinstall -y \
+  ca-certificates \
+  && \
+  update-ca-certificates
 
-# pick up reference to python so that we can get 3.8 and not the really old default
+#Install RMR
 
-RUN    apt-get update \
-	&& apt install -y software-properties-common \
-	&& add-apt-repository ppa:deadsnakes/ppa \
-	&& apt-get install -y python3.8 python3-pip wget \
-	&& apt-get clean
-
-# fetch and install RMR and any other needed libraries
-#
-ARG RMR_VER=4.8.0
+ARG RMR_VER=4.8.3
 ARG RMR_PKG_URL=https://packagecloud.io/o-ran-sc/release/packages/debian/stretch/
 
 RUN wget -nv --content-disposition ${RMR_PKG_URL}/rmr_${RMR_VER}_amd64.deb/download.deb
 RUN wget -nv --content-disposition ${RMR_PKG_URL}/rmr-dev_${RMR_VER}_amd64.deb/download.deb
 RUN    dpkg -i rmr_${RMR_VER}_amd64.deb  \
-	&& dpkg -i rmr-dev_${RMR_VER}_amd64.deb \
-	&& ldconfig
+        && dpkg -i rmr-dev_${RMR_VER}_amd64.deb \
+        && ldconfig
 
-# copy python modules; this makes the 2 stage python build work
+
+ENV PATH="/usr/local/go/bin:${PATH}"
+
+ENV GOPATH="/go"
+
+RUN mkdir -p /go/bin
+RUN mkdir -p /go/src/ws
+WORKDIR "/go/src/ws"
+
+# Module prepare (if go.mod/go.sum updated)
+COPY go.mod /go/src/ws
+COPY go.sum /go/src/ws
+RUN GO111MODULE=on go mod download
+
+# build and test
+COPY . /go/src/ws
+COPY  ./config/config_test.yaml /opt/a1-mediator/
+COPY  ./config/config_rmr.json /opt/a1-mediator/
+
+ENV CFG_FILE=/opt/a1-mediator/config-_rmr.json
+ENV A1_CONFIG_FILE=/opt/a1-mediator/config_test.yaml
+
+
+# Build the code
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /go/src/ws/cache/go/cmd/a1 cmd/a1.go
+
+# Run unit tests
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go test -p 1 -cover ./pkg/resthooks/
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go test -p 1 -cover ./pkg/a1/
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go test -p 1 -cover ./pkg/policy
+
+RUN gofmt -l $(find cmd/ pkg/  -name '*.go' -not -name '*_test.go')
+
+CMD ["/bin/bash"]
+
+
+#----------------------------------------------------------
+FROM ubuntu:18.04 as a1-mediator
+
+RUN apt-get update -y \
+    && apt-get install --reinstall -y sudo openssl ca-certificates ca-cacert wget\
+    && apt-get clean && update-ca-certificates
+
+#Install RMR
+
+ARG RMR_VER=4.8.3
+ARG RMR_PKG_URL=https://packagecloud.io/o-ran-sc/release/packages/debian/stretch/
+
+RUN wget -nv --content-disposition ${RMR_PKG_URL}/rmr_${RMR_VER}_amd64.deb/download.deb
+RUN wget -nv --content-disposition ${RMR_PKG_URL}/rmr-dev_${RMR_VER}_amd64.deb/download.deb
+RUN    dpkg -i rmr_${RMR_VER}_amd64.deb  \
+        && dpkg -i rmr-dev_${RMR_VER}_amd64.deb \
+        && ldconfig
+
 #
-COPY --from=build /home/a1user/.local /home/a1user/.local
-
-# create mount point for dir with rmr routing file as named below
+# a1-mediator
 #
-RUN mkdir -p /opt/route/
+RUN mkdir -p /opt/a1-mediator \
+    && chmod -R 755 /opt/a1-mediator
 
-# create a non-root user, ensure it can access what it needs, and switch to it
-#
-RUN    addgroup a1user \
-	&& adduser --disabled-password --disabled-login --gecos "image-user" --no-create-home --ingroup a1user a1user \
-	&& chown -R a1user:a1user /home/a1user/.local \
-	&& chown a1user:a1user /home/a1user
+COPY --from=a1-build /go/src/ws/cache/go/cmd/a1 /opt/a1-mediator/a1
+
+COPY  ./config/config.yaml /opt/a1-mediator/
+COPY  ./config/config_rmr.json /opt/a1-mediator/
+
+WORKDIR /opt/a1-mediator
+
+ARG RMR_CONFIG=/opt/a1-mediator/config-_rmr.json
+ENV CFG_FILE=$RMR_CONFIG
+ARG A1_CONFIG=/opt/a1-mediator/config.yaml
+ENV A1_CONFIG_FILE=$A1_CONFIG
 
 
-# ------------------ no root commands after this point -------------------------------------
-USER a1user
+COPY a1-entrypoint.sh /opt/a1-mediator/
+ENTRYPOINT ["/opt/a1-mediator/a1-entrypoint.sh"]
 
-# the maddening onsey-twosey install of pything crud...
-#
-RUN pip3 install  --user connexion
-
-# misc
-#
-EXPOSE 10000
-ENV LD_LIBRARY_PATH /usr/local/lib/:/usr/local/lib64
-ENV RMR_SEED_RT /opt/route/local.rt
-
-# Set "fake" to True to run standalone
-#
-ENV USE_FAKE_SDL False
-ENV PYTHONUNBUFFERED 1
-
-# pip installs executable script to $HOME/.local/bin so PATH vars are critical
-#
-ENV PATH /home/a1user/.local/bin:$PATH
-ENV PYTHONPATH /home/a1user/.local/lib/python3.8/site-packages
-
-# prometheus client gathers data here
-#
-ENV prometheus_multiproc_dir /tmp
-
-# by defalt start the application
-#
-CMD [ "/usr/bin/python3.8", "/home/a1user/.local/bin/run-a1" ]