Merge lpbuildbot:use-wheels-to-pack into lpbuildbot:main

[Vaishnavi Asawale]

WIP: Use pre-downloaded wheels while packing the charm

Unmerged commits

42a163e... by Vaishnavi Asawale on 2025-09-08

Can pack charm from wheels

1a74ee0... by Vaishnavi Asawale on 2025-09-08

Run ruff format and ruff check

4a31e14... by Vaishnavi Asawale on 2025-09-03

Final working charm

dfc5e83... by Vaishnavi Asawale on 2025-09-02

Working buildbot manager

0e69c8d... by Tushar Gupta on 2025-08-12

init

diff --git a/.gitignore b/.gitignore
index ae56c78..8b9db6a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+<<<<<<< .gitignore
 tags
 Session.vim
 TAGS
@@ -6,3 +7,14 @@ lp-db-devel-*
 twistd.log*
 twistd.pid
 work
+=======
+venv/
+build/
+*.charm
+.tox/
+.coverage
+__pycache__/
+*.py[cod]
+.idea
+.vscode/
+>>>>>>> .gitignore
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..20e88bc
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,34 @@
+# Contributing
+
+To make contributions to this charm, you'll need a working [development setup](https://juju.is/docs/sdk/dev-setup).
+
+You can create an environment for development with `tox`:
+
+```shell
+tox devenv -e integration
+source venv/bin/activate
+```
+
+## Testing
+
+This project uses `tox` for managing test environments. There are some pre-configured environments
+that can be used for linting and formatting code when you're preparing contributions to the charm:
+
+```shell
+tox run -e format        # update your code according to linting rules
+tox run -e lint          # code style
+tox run -e static        # static type checking
+tox run -e unit          # unit tests
+tox run -e integration   # integration tests
+tox                      # runs 'format', 'lint', 'static', and 'unit' environments
+```
+
+## Build the charm
+
+Build the charm in this git repository using:
+
+```shell
+charmcraft pack
+```
+
+<!-- You may want to include any contribution/style guidelines in this document>
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..bc0f920
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
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+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2025 Tushar Gupta
+
+   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
+
+   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.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c53bbc8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,36 @@
+<!--
+Avoid using this README file for information that is maintained or published elsewhere, e.g.:
+
+* metadata.yaml > published on Charmhub
+* documentation > published on (or linked to from) Charmhub
+* detailed contribution guide > documentation or CONTRIBUTING.md
+
+Use links instead.
+-->
+
+# buildbot-manager
+
+Charmhub package name: operator-template
+More information: https://charmhub.io/buildbot-manager
+
+Describe your charm in one or two sentences.
+
+## Other resources
+
+<!-- If your charm is documented somewhere else other than Charmhub, provide a link separately. -->
+
+- [Read more](https://example.com)
+
+- [Contributing](CONTRIBUTING.md) <!-- or link to other contribution documentation -->
+
+- See the [Juju SDK documentation](https://juju.is/docs/sdk) for more information about developing and improving charms.
+
+# Setup Instructions
+
+To set up the development environment:
+
+```bash
+python3 -m venv .venv
+source .venv/bin/activate
+pip install -r requirements.txt
+```
\ No newline at end of file
diff --git a/charmcraft.yaml b/charmcraft.yaml
new file mode 100644
index 0000000..72c32d0
--- /dev/null
+++ b/charmcraft.yaml
@@ -0,0 +1,95 @@
+# This file configures Charmcraft.
+# See https://juju.is/docs/sdk/charmcraft-config for guidance.
+
+
+
+# (Required)
+name: buildbot-manager
+
+
+# (Required)
+type: charm
+
+
+# (Recommended)
+title: Buildbot Manager
+
+
+# (Required)
+summary: A very short one-line summary of the charm.
+
+
+# (Required)
+description: |
+  A single sentence that says what the charm is, concisely and memorably.
+
+  A paragraph of one to three short sentences, that describe what the charm does.
+
+  A third paragraph that explains what need the charm meets.
+
+  Finally, a paragraph that describes whom the charm is useful for.
+
+
+# (Required for 'charm' type)
+# bases:
+#   - build-on:
+#     - name: ubuntu
+#       channel: "22.04"
+#     run-on:
+#     - name: ubuntu
+#       channel: "22.04"
+
+base: ubuntu@24.04
+
+platforms:
+  amd64:
+
+parts:
+  charm-wheels:
+    plugin: dump
+    source: https://git.launchpad.net/~vaishnavi-asawale/+git/wheels-buildbot-manager-charm
+    source-commit: 1d1b984acbe3ee1fd523f25990887637e32fbeb6
+    source-type: git
+    organize:
+      "*": wheels/
+    prime:
+      - "-wheels"
+
+  charm:
+    source: .
+    after:
+      - charm-wheels
+    build-packages:
+      - build-essential
+      - python3-dev
+      - libssl-dev
+      - libffi-dev
+      - python3.12-venv
+    stage:
+      - wheels/*
+    build-environment:
+      - PIP_NO_INDEX: "true"
+      - PIP_FIND_LINKS: "$CRAFT_STAGE/wheels"
+    override-build: |
+      INSTALL_PATH="/srv/buildbot/managers"
+      VENV_NAME="sandbox"
+      VENV_PATH="$INSTALL_PATH/$VENV_NAME"
+      mkdir -p "$INSTALL_PATH"
+      python3 -m venv --clear "$VENV_PATH"
+      "$VENV_PATH/bin/pip" install --no-index --find-links="$CRAFT_STAGE/wheels" --requirement requirements.txt
+
+# (Optional) Configuration options for the charm
+# This config section defines charm config options, and populates the Configure
+# tab on Charmhub.
+# More information on this section at https://juju.is/docs/sdk/charmcraft-yaml#heading--config
+# General configuration documentation: https://juju.is/docs/sdk/config
+config:
+  options:
+    # An example config option to customise the log level of the workload
+    log-level:
+      description: |
+        Configures the log level of gunicorn.
+
+        Acceptable values are: "info", "debug", "warning", "error" and "critical"
+      default: "info"
+      type: string
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..e10531c
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,46 @@
+# Testing tools configuration
+[tool.coverage.run]
+branch = true
+
+[tool.coverage.report]
+show_missing = true
+
+[tool.pytest.ini_options]
+minversion = "6.0"
+log_cli_level = "INFO"
+
+# Formatting tools configuration
+[tool.black]
+line-length = 99
+target-version = ["py38"]
+
+# Linting tools configuration
+[tool.ruff]
+line-length = 99
+select = ["E", "W", "F", "C", "N", "D", "I001"]
+extend-ignore = [
+    "D203",
+    "D204",
+    "D213",
+    "D215",
+    "D400",
+    "D404",
+    "D406",
+    "D407",
+    "D408",
+    "D409",
+    "D413",
+]
+ignore = ["E501", "D107"]
+extend-exclude = ["__pycache__", "*.egg_info"]
+per-file-ignores = {"tests/*" = ["D100","D101","D102","D103","D104"]}
+
+[tool.ruff.mccabe]
+max-complexity = 10
+
+[tool.codespell]
+skip = "build,lib,venv,icon.svg,.tox,.git,.mypy_cache,.ruff_cache,.coverage"
+
+[tool.pyright]
+include = ["src/**.py"]
+
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e81e315
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,48 @@
+ops ~= 2.5
+charmhelpers ~= 1.2
+alembic==1.16.5
+attrs==25.3.0
+autobahn==24.4.2
+Automat==25.4.16
+buildbot==4.3.0
+buildbot-console-view==4.3.0
+buildbot-grid-view==4.3.0
+buildbot-waterfall-view==4.3.0
+buildbot-worker==4.3.0
+buildbot-www==4.3.0
+certifi==2025.8.3
+cffi==1.17.1
+charset-normalizer==3.4.3
+constantly==23.10.4
+croniter==6.0.0
+cryptography==45.0.7
+greenlet==3.2.4
+hyperlink==21.0.0
+idna==3.10
+incremental==24.7.2
+Jinja2==3.1.6
+Mako==1.3.10
+MarkupSafe==3.0.2
+msgpack==1.1.1
+multipart==1.3.0
+packaging==25.0
+pyasn1==0.6.1
+pyasn1_modules==0.4.2
+pycparser==2.22
+PyJWT==2.10.1
+pyOpenSSL==25.1.0
+python-dateutil==2.9.0.post0
+pytz==2025.2
+PyYAML==6.0.2
+requests==2.32.5
+service-identity==24.2.0
+setuptools==80.9.0
+six==1.17.0
+SQLAlchemy==2.0.43
+treq==25.5.0
+Twisted==25.5.0
+txaio==25.6.1
+typing_extensions==4.15.0
+unidiff==0.7.5
+urllib3==2.5.0
+zope.interface==7.2
diff --git a/src/charm.py b/src/charm.py
new file mode 100755
index 0000000..be5d93e
--- /dev/null
+++ b/src/charm.py
@@ -0,0 +1,137 @@
+#!/usr/bin/env python3
+# Copyright 2025 Tushar Gupta
+# See LICENSE file for licensing details.
+
+"""Charm the application."""
+
+import getpass
+import logging
+import os
+import subprocess
+
+import ops
+from charmhelpers.core import templating
+
+logger = logging.getLogger(__name__)
+
+class BuildbotManagerCharm(ops.CharmBase):
+    """Charm the application."""
+
+    def __init__(self, framework: ops.Framework):
+        super().__init__(framework)
+        framework.observe(self.on.install, self._on_install)
+        framework.observe(self.on.config_changed, self._on_config_changed)
+        # working directory for the buildbot manager
+        self._venv_name = "sandbox"
+        self._install_path = "/srv/buildbot/managers"
+        self._venv_path = os.path.join(self._install_path, self._venv_name)
+        self._buildbot_bin_path = os.path.join(self._venv_path, "bin", "buildbot")
+        self._pip_bin_path = os.path.join(self._venv_path, "bin", "pip")
+
+    def _run_command(self, command: list[str], message, cwd=None, within_venv=False):
+        # See comment from Dima (element)
+        # TODO: REmove all venv land ogic, unset PYTHON_PATH and LD_LIBRAR before calling
+        # commands from inside the virtualenv and reset them.Y_PATH"""Utility to run shell commands with error handling."""
+        shell_command = ""
+        try:
+            self.unit.status = ops.MaintenanceStatus(message)
+            if within_venv:
+                command = [
+                    "source",
+                    os.path.join(self._venv_path, "bin", "activate"),
+                    "&&",
+                ] + command
+            shell_command = " ".join(command)
+
+            # Log current user, path, and PYTHONPATH
+            logger.debug("Current user: %s", getpass.getuser())
+            logger.debug("Current working directory: %s", os.getcwd())
+            logger.debug("PYTHONPATH: %s", os.environ.get("PYTHONPATH", ""))
+
+            logger.debug("Trying to run '%s'", shell_command)
+
+            # nit: shell=True can lead to security implications,
+            res = subprocess.run(
+                shell_command,
+                cwd=cwd,
+                executable="/bin/bash",
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                text=True if within_venv else False,
+                shell=True,
+                check=True,
+            )
+
+            logger.debug("Command stdout:\n%s", res.stdout.strip())
+            logger.debug("Command stderr:\n%s", res.stderr.strip())
+            logger.debug(
+                "Successfully ran '%s' with return code %s", shell_command, res.returncode
+            )
+
+        except subprocess.CalledProcessError as e:
+            logger.error("Failed to run '%s'", shell_command)
+            logger.error("Return code: %s", e.returncode)
+            logger.error("stdout:\n%s", e.stdout)
+            logger.error("stderr:\n%s", e.stderr)
+            self.unit.status = ops.BlockedStatus(f"Failure running: {message}")
+            raise RuntimeError(f"Command failed: {shell_command}") from e
+
+    def _on_install(self, event: ops.InstallEvent):
+        """Handle install event: set up Buildbot manager environment."""
+        # nit: use pathlib
+        self._run_command(["mkdir", "-p", self._install_path], "Creating manager root directory")
+
+        self._run_command(
+            ["python3", "-m", "venv", self._venv_path],
+            "Creating virtualenv",
+            cwd=self._install_path,
+        )
+
+        # check if using cwd helps
+        self._run_command(
+            ["pip", "install", "--upgrade", "pip"],
+            "Upgrading pip",
+            cwd=self._install_path,
+            within_venv=True,
+        )
+
+        templating.render("buildbot@.service.j2", "/lib/systemd/system/buildbot@.service", {})
+
+        self._run_command(["systemctl", "daemon-reload"], message="Reload systemd")
+
+        self._run_command(
+            ["adduser", "--system", "--home", "/srv/buildbot", "--group", "buildbot"],
+            "Creating buildbot user",
+        )
+
+    def _on_config_changed(self, event: ops.ConfigChangedEvent):
+        service_name = "lp-manager"
+        self._run_command(
+            ["buildbot", "create-master", service_name],
+            "Creating Buildbot manager",
+            cwd=self._install_path,
+            within_venv=True,
+        )
+        cfg_path = os.path.join(self._install_path, service_name)
+        # think about what configurations this charm will need
+        self._run_command(
+            ["chown", "-R", "buildbot:buildbot", cfg_path],
+            "Set ownership of Buildbot manager directory",
+        )
+
+        self._run_command(
+            ["mv", "master.cfg.sample", "master.cfg"],
+            "Configuring master",
+            cwd=cfg_path,
+        )
+
+        self._run_command(
+            ["systemctl", "enable", "--now", f"buildbot@{service_name}.service"],
+            message="Enabling and starting buildbot manager",
+        )
+
+        self.unit.status = ops.ActiveStatus("Buildbot master is running")
+
+
+if __name__ == "__main__":  # pragma: nocover
+    ops.main(BuildbotManagerCharm)  # type: ignore
diff --git a/templates/buildbot@.service.j2 b/templates/buildbot@.service.j2
new file mode 100644
index 0000000..a5e9103
--- /dev/null
+++ b/templates/buildbot@.service.j2
@@ -0,0 +1,18 @@
+[Unit]
+Description=Buildbot master %I
+Documentation=https://docs.buildbot.net/
+ConditionDirectoryNotEmpty=/srv/buildbot/managers/%i
+ConditionFileNotEmpty=/srv/buildbot/managers/%i/buildbot.tac
+ConditionFileNotEmpty=/srv/buildbot/managers/%i/master.cfg
+
+[Service]
+Type=simple
+WorkingDirectory=/srv/buildbot/managers/%i
+PrivateTmp=true
+User=buildbot
+Group=buildbot
+ExecStart=/srv/buildbot/managers/sandbox/bin/buildbot start --nodaemon /srv/buildbot/managers/%i
+ExecReload=/bin/kill -HUP $MAINPID
+
+[Install]
+WantedBy=multi-user.target
diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py
new file mode 100644
index 0000000..c9da586
--- /dev/null
+++ b/tests/integration/test_charm.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+# Copyright 2025 Tushar Gupta
+# See LICENSE file for licensing details.
+
+import asyncio
+import logging
+from pathlib import Path
+
+import pytest
+import yaml
+from pytest_operator.plugin import OpsTest
+
+logger = logging.getLogger(__name__)
+
+METADATA = yaml.safe_load(Path("./metadata.yaml").read_text())
+APP_NAME = METADATA["name"]
+
+
[e-mail]_on_fail
+async def test_build_and_deploy(ops_test: OpsTest):
+    """Build the charm-under-test and deploy it together with related charms.
+
+    Assert on the unit status before any relations/configurations take place.
+    """
+    # Build and deploy charm from local source folder
+    charm = await ops_test.build_charm(".")
+
+    # Deploy the charm and wait for active/idle status
+    await asyncio.gather(
+        ops_test.model.deploy(charm, application_name=APP_NAME),
+        ops_test.model.wait_for_idle(
+            apps=[APP_NAME], status="active", raise_on_blocked=True, timeout=1000
+        ),
+    )
diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py
new file mode 100644
index 0000000..f16045e
--- /dev/null
+++ b/tests/unit/test_charm.py
@@ -0,0 +1,24 @@
+# Copyright 2025 Tushar Gupta
+# See LICENSE file for licensing details.
+#
+# Learn more about testing at: https://juju.is/docs/sdk/testing
+
+import unittest
+
+import ops
+import ops.testing
+
+from charm import BuildbotManagerCharm
+
+
+class TestCharm(unittest.TestCase):
+    def setUp(self):
+        self.harness = ops.testing.Harness(BuildbotManagerCharm)
+        self.addCleanup(self.harness.cleanup)
+
+    def test_start(self):
+        # Simulate the charm starting
+        self.harness.begin_with_initial_hooks()
+
+        # Ensure we set an ActiveStatus with no message
+        self.assertEqual(self.harness.model.unit.status, ops.ActiveStatus())
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..db6bb52
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,86 @@
+# Copyright 2025 Tushar Gupta
+# See LICENSE file for licensing details.
+
+[tox]
+no_package = True
+skip_missing_interpreters = True
+env_list = format, lint, static, unit
+min_version = 4.0.0
+
+[vars]
+src_path = {tox_root}/src
+tests_path = {tox_root}/tests
+;lib_path = {tox_root}/lib/charms/operator_name_with_underscores
+all_path = {[vars]src_path} {[vars]tests_path}
+
+[testenv]
+set_env =
+    PYTHONPATH = {tox_root}/lib:{[vars]src_path}
+    PYTHONBREAKPOINT=pdb.set_trace
+    PY_COLORS=1
+pass_env =
+    PYTHONPATH
+    CHARM_BUILD_DIR
+    MODEL_SETTINGS
+
+[testenv:format]
+description = Apply coding style standards to code
+deps =
+    black
+    ruff
+commands =
+    black {[vars]all_path}
+    ruff check --fix {[vars]all_path}
+
+[testenv:lint]
+description = Check code against coding style standards
+deps =
+    black
+    ruff
+    codespell
+commands =
+    # if this charm owns a lib, uncomment "lib_path" variable
+    # and uncomment the following line
+    # codespell {[vars]lib_path}
+    codespell {tox_root}
+    ruff check {[vars]all_path}
+    black --check --diff {[vars]all_path}
+
+[testenv:unit]
+description = Run unit tests
+deps =
+    pytest
+    coverage[toml]
+    -r {tox_root}/requirements.txt
+commands =
+    coverage run --source={[vars]src_path} \
+                 -m pytest \
+                 --tb native \
+                 -v \
+                 -s \
+                 {posargs} \
+                 {[vars]tests_path}/unit
+    coverage report
+
+[testenv:static]
+description = Run static type checks
+deps =
+    pyright
+    -r {tox_root}/requirements.txt
+commands =
+    pyright {posargs}
+
+[testenv:integration]
+description = Run integration tests
+deps =
+    pytest
+    juju
+    pytest-operator
+    -r {tox_root}/requirements.txt
+commands =
+    pytest -v \
+           -s \
+           --tb native \
+           --log-cli-level=INFO \
+           {posargs} \
+           {[vars]tests_path}/integration