Merge pull request #10 from freedomofpress/RPMBuilder

Adds rpm buider container.. swaps out build scripts

Author: msheiny

Makefile

@@ -0,0 +1,12 @@
+[[source]]
+url = "https://pypi.python.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[dev-packages]
+
+[packages]
+PyYAML = "*"
+
+[requires]
+python_version = "3"

Pipfile

@@ -18,3 +18,14 @@ For example in `circleci-docker/meta.yml`:
 repo: "quay.io/freedomofpress/circleci-docker"
 tag: "v2"
 ```
+
+## Enacting a build
+
+* Make sure you install the repo requirements via pipenv. Need to install pipenv?
+  Follow [upstream documentation](ttps://pipenv.readthedocs.io/en/latest/install/#installing-pipenv).
+
+* Either jump into a shell `pipenv shell` or you can run the following command
+  with `pipenv run _____`
+
+* Run `./build.py $<name_of_local_container_dir>` .. I like to take advantage of
+  the tab completion in terminal here when selecting a container to build.

Pipfile.lock

@@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+"""
+Builds docker images using specs from folders and metadata config files.
+"""
+
+import argparse
+import os
+import shlex
+import subprocess
+import yaml
+
+
+CUR_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
+
+
+def get_container_names(dir_name=CUR_DIRECTORY):
+    """
+        Get me a list of sub-directories that contain a meta.yml.
+        Assume these are container names we are interested in
+    """
+    containers = []
+
+    for dir in os.listdir(dir_name):
+        try:
+            if ('meta.yml' in os.listdir(dir) and
+                    'Dockerfile' in os.listdir(dir)):
+                containers.append(dir)
+        except NotADirectoryError:
+            continue
+
+    return containers
+
+
+def extract_metadata(rootdir):
+    """ Provide root directory of container files, reads that folders meta.yml, and returns the yaml object """
+    with open(os.path.join(rootdir, 'meta.yml'), 'r') as f:
+        return yaml.load(f.read())
+
+
+def run_command(command):
+    """
+    Takes in a string command, runs said command as a subprocess, print to stdout live
+
+    Taken from https://www.endpoint.com/blog/2015/01/28/getting-realtime-output-using-python
+    """
+    process = subprocess.Popen(shlex.split(command), stdout=subprocess.PIPE)
+
+    while True:
+        output = process.stdout.readline().decode()
+        if output == '' and process.poll() is not None:
+            break
+        if output:
+            print(output.strip())
+    rc = process.poll()
+    return rc
+
+
+def build(image_name, dir=CUR_DIRECTORY):
+    """
+        Build docker image.
+
+        Assumes there is a dir structure of ./<container_name_dir>/
+        With at least `meta.yml` and `Dockerfile` within that folder.
+    """
+    container_dir = os.path.join(dir, image_name)
+
+    meta_data = extract_metadata(container_dir)
+
+    # If build args exist in metadata. lets pull em out!
+    try:
+        opt_args = ""
+        for build_arg in meta_data['args']:
+            opt_args += "--build-arg={}={} ".format(
+                        build_arg,
+                        meta_data['args'][build_arg])
+    except KeyError:
+        pass
+
+    # Build docker command
+    docker_cmd = ("docker build {opt} -t {tag}"
+                  " -f {dockerfile} {context}").format(
+                        opt=opt_args,
+                        tag=':'.join([meta_data['repo'], meta_data['tag']]),
+                        dockerfile=os.path.join(container_dir, 'Dockerfile'),
+                        context=container_dir)
+
+    print("Running '{}'".format(docker_cmd))
+    run_command(docker_cmd)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description=__doc__)
+    # Basically a folder that has a meta.yml and a Dockerfile
+    parser.add_argument('container',
+                        type=str,
+                        help='container to build',
+                        choices=get_container_names())
+
+    args = parser.parse_args()
+
+    build(args.container)

README.md

@@ -0,0 +1,30 @@
+FROM fedora:25
+LABEL maintainer="Freedom of the Press Foundation"
+LABEL description="RedHat tooling for building RPMs"
+ARG FEDORA_PKGR_VER
+
+
+RUN echo "${FEDORA_PKGR_VER}"
+
+RUN dnf update -y && \
+    dnf install -y \
+    fedora-packager-${FEDORA_PKGR_VER}.noarch \
+    make \
+    python3-cryptography \
+    python3-devel \
+    python3-requests \
+    python3-setuptools \
+    vim && \
+    yum clean all
+
+ENV HOME /home/user
+RUN useradd --create-home --home-dir $HOME user \
+    && chown -R user:user $HOME && \
+    su -c rpmdev-setuptree user
+
+WORKDIR $HOME/rpmbuild
+VOLUME $HOME/rpmbuild
+
+USER user
+
+CMD ["/usr/bin/bash"]