creating standalone binary for kapitan

.travis.yml

@@ -38,6 +38,8 @@ install:
 script:
   - make build_helm_binding
   - make test && make test_coverage
+  - make build_binary
+  - make test_binary
 
 after_success:
   - if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_BRANCH" = "master" ]; then bash ./scripts/inc_version.sh; fi

Makefile

@@ -44,7 +44,14 @@ codestyle:
 	flake8 --ignore E501 . --exclude=reclass
 	@echo
 
+.PHONY: build_binary
+build_binary:
+	scripts/build-binary.sh
+
+.PHONY: test_binary
+test_binary:
+	python3 -m unittest tests.test_binary
+
 .PHONY: build_helm_binding
 build_helm_binding:
 	bash kapitan/inputs/helm/build.sh
-

kapitan/inputs/helm/__init__.py

@@ -68,7 +68,7 @@ def render_chart(chart_dir, output_path, **kwargs):
     try:
         # lib is opened inside the function to allow multiprocessing
         lib = ffi.dlopen(os.path.join(os.path.dirname(os.path.abspath(__file__)), "libtemplate.so"))
-    except NameError:
+    except (NameError, OSError):
         raise HelmBindingUnavailableError("Helm binding is not available. Run 'make build_helm_binding' to create it")
 
     if kwargs.get('helm_values_file', None):

pyinstaller-Dockerfile

@@ -0,0 +1,40 @@
+FROM debian:stretch
+SHELL ["/bin/bash", "-i", "-c"]
+
+ARG PYTHON_VERSION=3.7.2
+ARG PYINSTALLER_VERSION=3.5
+
+RUN mkdir /kapitan
+WORKDIR /kapitan
+COPY kapitan/ kapitan/
+# COPY __main__.spec ./build.spec
+COPY requirements.txt ./requirements.txt
+COPY scripts/pyinstaller.sh ./pyinstaller.sh
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+    build-essential \
+    ca-certificates \
+    git \
+    libffi-dev \
+    libbz2-dev \
+    libreadline-dev \
+    libsqlite3-dev \
+    libssl-dev \
+    zlib1g-dev \
+    curl
+
+RUN echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc \
+    && echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc \
+    && source ~/.bashrc \
+    && curl -L https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer | bash \
+    && echo 'eval "$(pyenv init -)"' >> ~/.bashrc \
+    && source ~/.bashrc \
+    && PYTHON_CONFIGURE_OPTS="--enable-shared" pyenv install $PYTHON_VERSION \
+    && pyenv global $PYTHON_VERSION \
+    && pip install --upgrade pip \
+    && pip install pyinstaller==$PYINSTALLER_VERSION \
+    && pip install -r requirements.txt \
+    && chmod +x pyinstaller.sh
+
+ENTRYPOINT ["./pyinstaller.sh"]

requirements.txt

@@ -15,4 +15,4 @@ cffi
 rfc3987==1.3.8
 GitPython==2.1.11
 # Reclass dependencies
-pyparsing
+pyparsing

scripts/build-binary.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+# make sure to run this from project root
+set -e
+IMAGE_NAME='pyinstaller-debian'
+docker build -t $IMAGE_NAME -f pyinstaller-Dockerfile .
+docker run -it -v $(pwd)/dist:/kapitan/dist $IMAGE_NAME

scripts/pyinstaller.sh

@@ -0,0 +1,17 @@
+#!/bin/bash -i
+
+# this script is for building the binary inside docker image.]
+
+set -e
+. /root/.bashrc
+
+entry='__main__'
+output_name='runner'
+pyi-makespec kapitan/"$entry".py --onefile \
+    --add-data kapitan/reclass/reclass:reclass \
+    --add-data kapitan/lib:kapitan/lib \
+    --add-data kapitan/inputs/helm/libtemplate.so:kapitan/inputs/helm \
+    --hidden-import pyparsing --hidden-import jsonschema \
+    --exclude-module doctest --exclude-module pydoc
+pyinstaller "$entry".spec --clean
+mv dist/$entry dist/$output_name