Initial commit

.gitignore

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+# Created by .ignore support plugin (hsz.mobi)
+
+### Python template
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/

.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyCompatibilityInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ourVersions">
+        <value>
+          <list size="4">
+            <item index="0" class="java.lang.String" itemvalue="3.6" />
+            <item index="1" class="java.lang.String" itemvalue="3.7" />
+            <item index="2" class="java.lang.String" itemvalue="3.8" />
+            <item index="3" class="java.lang.String" itemvalue="3.9" />
+          </list>
+        </value>
+      </option>
+    </inspection_tool>
+    <inspection_tool class="PyPackageRequirementsInspection" enabled="true" level="INFORMATION" enabled_by_default="true">
+      <option name="ignoredPackages">
+        <value>
+          <list size="0" />
+        </value>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/inspectionProfiles/profiles_settings.xml

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+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="PROJECT_PROFILE" value="Default" />
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8 (.venv)" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/podlaunch.iml" filepath="$PROJECT_DIR$/.idea/podlaunch.iml" />
+    </modules>
+  </component>
+</project>

.idea/podlaunch.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

LICENSE

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+MIT License
+
+Copyright (c) 2020  Benedikt Ziemons
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

main.py

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+import json
+import os
+import pathlib
+import sys
+import threading
+import traceback
+from datetime import datetime
+from signal import signal, SIGCHLD, SIGHUP, SIGINT, SIGTERM, setitimer, SIGALRM, ITIMER_REAL
+
+import click
+import sh
+# noinspection PyUnresolvedReferences
+from sh import podman
+
+SERVICES_BASE_PATH = "/docker/services/"
+
+sdnotify = sh.Command("systemd-notify")
+
+
+class PodKeeper:
+    def __init__(self, network, identifier):
+        self.podnet_args = ("--network", network) if network else ()
+        identifier_path = pathlib.PurePath(identifier)
+        if len(identifier_path.parts) != 1:
+            raise ValueError(f"identifier has too many parts: {identifier_path}")
+        self.podhome = pathlib.Path(SERVICES_BASE_PATH) / identifier_path
+        if not self.podhome.exists():
+            raise NotADirectoryError(f"pod home does not exist: {self.podhome}")
+        self.podname = f"{identifier}_pod"
+        self.podyaml = f"pod-{identifier}.yaml"
+        podyaml_complete = (self.podhome / self.podyaml)
+        if not podyaml_complete.exists():
+            raise FileNotFoundError(f"pod definition does not exist: {podyaml_complete}")
+        self.stopping = threading.Event()
+        self.reloading = threading.Event()
+        self.checking = threading.Event()
+        self.waiter = threading.Event()
+
+    def destroy(self):
+        self.stopping.set()
+        self.waiter.set()
+
+    def reload(self):
+        self.reloading.set()
+        self.waiter.set()
+
+    def check(self):
+        self.checking.set()
+        self.waiter.set()
+
+    def run(self):
+        os.chdir(self.podhome)
+        last_check = datetime.utcnow()
+        print(f"Starting pod {self.podname} at {last_check}", file=sys.stderr, flush=True)
+        podman.play.kube(self.podyaml, *self.podnet_args)
+        sdnotify("--ready")
+        while not self.stopping.is_set():
+            self.waiter.wait()
+            self.waiter.clear()
+            if self.checking.is_set():
+                self.checking.clear()
+                new_timestamp = datetime.utcnow()
+                pod_description = json.loads(podman.pod.inspect(self.podname))
+                for container in pod_description["Containers"]:
+                    if container["State"] != "running":
+                        print(f"Container {container['name']} exited", file=sys.stderr, flush=True)
+                        print(f"Log since last check:\n{podman.logs('--since', last_check.isoformat(), container['name'])}", file=sys.stderr, flush=True)
+                        self.destroy()
+                last_check = new_timestamp
+
+            if self.reloading.is_set():
+                self.reloading.clear()
+                print("Reloading pod", self.podname, file=sys.stderr, flush=True)
+                try:
+                    podman.pod.kill("--signal", "HUP", self.podname)
+                except sh.ErrorReturnCode:
+                    print("Error reloading pod", file=sys.stderr, flush=True)
+                    traceback.print_exc()
+
+        self.stop_sequence()
+
+    def stop_sequence(self):
+        print("Stopping pod", self.podname, file=sys.stderr, flush=True)
+        try:
+            podman.pod.stop("-t", "19", self.podname)
+            successful_stopped = True
+        except sh.ErrorReturnCode:
+            print(f"First stop of {self.podname} was not successful!", file=sys.stderr, flush=True)
+            successful_stopped = False
+        try:
+            podman.pod.stop("-t", "5", self.podname)
+        except sh.ErrorReturnCode:
+            if not successful_stopped:
+                print(f"Second stop of {self.podname} was not successful!", file=sys.stderr, flush=True)
+        try:
+            podman.pod.rm(self.podname)
+        except sh.ErrorReturnCode:
+            print(f"Removal of {self.podname} was not successful!", file=sys.stderr, flush=True)
+
+
+@click.command()
+@click.option("--network", default="brodge", help="Network for the created pod")
+@click.argument("identifier")
+def main(network, identifier):
+    keeper = PodKeeper(network, identifier)
+
+    signal(SIGCHLD, keeper.destroy)
+    signal(SIGINT, keeper.destroy)
+    signal(SIGTERM, keeper.destroy)
+    signal(SIGHUP, keeper.reload)
+    signal(SIGALRM, keeper.check)
+    setitimer(ITIMER_REAL, 4.0, 10.0)
+
+    keeper.run()
+
+
+if __name__ == '__main__':
+    main()

pod@.service

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+[Unit]
+Description=Podman pod@%i
+Documentation=man:podman-generate-systemd(1)
+Wants=network.target
+After=network-online.target
+
+[Service]
+Type=simple
+Environment=PODMAN_SYSTEMD_UNIT=%n
+ExecStart=/usr/local/bin/podlaunch %i
+Restart=on-failure
+RestartSec=30s
+TimeoutStartSec=2min
+TimeoutStopSec=1min
+KillMode=none
+
+[Install]
+WantedBy=multi-user.target default.target

podlaunch

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+#!/bin/sh
+/usr/bin/env python3 $(dirname $0)/../lib/podlaunch/main.py $@