.drone.star

@@ -3,13 +3,17 @@ def main(ctx):
     pipelines = []
 
     # Run tests
-    pipelines += run_tests()
+    test_pipelines = build_test_pipelines()
+    pipelines += test_pipelines
+
+    # Wait for all tests to complete
+    pipelines.append(wait_for_all_tests(test_pipelines))
 
     # Add pypi push pipeline
-    pipelines += push_to_pypi(ctx)
+    pipelines.append(push_to_pypi(ctx))
 
     # Add docker push pipelines
-    pipelines += push_to_docker(ctx)
+    pipelines += docker_pipelines()
 
     return pipelines
 
@@ -23,28 +27,41 @@ def get_workspace():
 
 
 # Builds a list of all test pipelines to be executed
-def run_tests():
-    return [{
+def build_test_pipelines():
+    return [
+        test("python:3.5"),
+        test("python:3.6"),
+        test("python:3.7"),
+        test("python:3.8"),
+        test("python:3"),
+        test("pypy:3.6", "pypy3", "pypy3"),
+        test("pypy:3", "pypy3", "pypy3"),
+    ]
+
+
+# Waits for the completion of all test pipelines
+def wait_for_all_tests(test_pipelines):
+    depends_on = []
+    for pipeline in test_pipelines:
+        depends_on.append(pipeline["name"])
+
+    return {
         "kind": "pipeline",
-        "name": "tests",
+        "name": "py-tests",
+        "steps": [],
+        "depends_on": depends_on,
+    }
+
+
+# Builds a single test pipeline
+def test(docker_tag, python_cmd="python", tox_env="py3"):
+    return {
+        "kind": "pipeline",
+        "name": "test-{}".format(docker_tag.replace(":", "")),
         "workspace": get_workspace(),
         "steps": [
-            tox_step("python:3.7"),
-            tox_step("python:3.8"),
-            tox_step("python:3.9"),
-            tox_step("python:3.10"),
-            tox_step("python:3"),
-            # tox_step("pypy:3.9", "pypy3", "pypy3"),
-            # tox_step("pypy:3", "pypy3", "pypy3"),
-            notify_step(),
-        ],
-    }]
-
-
-# Builds a single python test step
-def tox_step(docker_tag, python_cmd="python", tox_env="py3"):
-    return {
-        "name": "test {}".format(docker_tag.replace(":", "")),
+            {
+                "name": "test",
                 "image": docker_tag,
                 "environment": {
                     "TOXENV": tox_env,
@@ -54,6 +71,9 @@ def tox_step(docker_tag, python_cmd="python", tox_env="py3"):
                     "pip install tox",
                     "tox",
                 ],
+            },
+            notify_step()
+        ]
     }
 
 
@@ -85,11 +105,9 @@ def notify_step():
 
 # Push package to pypi
 def push_to_pypi(ctx):
-    return [{
+    return {
         "kind": "pipeline",
-        "name": "deploy to pypi",
-        "depends_on": ["tests"],
-        "workspace": get_workspace(),
+        "name": "deploy-pypi",
         "trigger": {
             "event": ["tag"],
             "ref": [
@@ -97,6 +115,8 @@ def push_to_pypi(ctx):
                 "refs/tags/v*",
             ],
         },
+        "depends_on": ["py-tests"],
+        "workspace": get_workspace(),
         "steps": [
             {
                 "name": "push to test pypi",
@@ -129,13 +149,30 @@ def push_to_pypi(ctx):
             },
             notify_step(),
         ]
-    }]
+    }
 
 
-# Build and push docker image
-def push_docker_step(tag_suffix, arch, repo):
+# Deploys image to docker hub
+def push_docker(tag_suffix, arch, repo):
     return {
-        "name": "push {}".format(tag_suffix),
+        "kind": "pipeline",
+        "name": "deploy-docker-{}".format(tag_suffix),
+        "trigger": {
+            "event": ["tag"],
+            "ref": [
+                "refs/heads/master",
+                "refs/tags/v*",
+            ],
+        },
+        "workspace": get_workspace(),
+        "steps": [
+            {
+                "name": "get qemu",
+                "image": "busybox",
+                "commands": ["sh ./get_qemu.sh {}".format(arch)],
+            },
+            {
+                "name": "build",
                 "image": "plugins/docker",
                 "settings": {
                     "repo": "iamthefij/minitor",
@@ -152,33 +189,39 @@ def push_docker_step(tag_suffix, arch, repo):
                         "REPO={}".format(repo),
                     ],
                 },
+            },
+        ],
     }
 
 
-# Builds a pipeline to push to docker
-def push_to_docker(ctx):
-    return [{
+# generate all docker pipelines to push images and manifest
+def docker_pipelines():
+    # build list of images to push
+    docker_pipelines = [
+        push_docker("linux-amd64", "x86_64", "library"),
+        push_docker("linux-arm", "arm", "arm32v6"),
+        push_docker("linux-arm64", "aarch64", "arm64v8"),
+    ]
+
+    # build list of dependencies
+    pipeline_names = []
+    for pipeline in docker_pipelines:
+        pipeline_names.append(pipeline["name"])
+
+    # append manifest pipeline
+    docker_pipelines.append({
         "kind": "pipeline",
-        "name": "push to docker",
-        "depends_on": ["tests"],
-        "workspace": get_workspace(),
+        "name": "deploy-docker-manifest",
         "trigger": {
-            "event": ["tag", "push"],
+            "event": ["tag"],
             "ref": [
                 "refs/heads/master",
                 "refs/tags/v*",
             ],
         },
-        "steps": [
-            {
-                "name": "get qemu",
-                "image": "busybox",
-                "commands": ["sh ./get_qemu.sh x86_64 arm aarch64"],
-            },
-            push_docker_step("linux-amd64", "x86_64", "library"),
-            push_docker_step("linux-arm", "arm", "arm32v6"),
-            push_docker_step("linux-arm64", "aarch64", "arm64v8"),
-            {
+        "workspace": get_workspace(),
+        "depends_on": pipeline_names,
+        "steps": [{
             "name": "publish manifest",
             "image": "plugins/manifest",
             "settings": {
@@ -192,10 +235,7 @@ def push_to_docker(ctx):
                     "from_secret": "docker_password",
                 },
             }
-            },
-            notify_step(),
-        ],
-    }]
+        }],
+    })
 
-
-# vim: ft=python
+    return docker_pipelines

.pre-commit-config.yaml

@@ -1,15 +1,17 @@
 repos:
-  - repo: https://github.com/psf/black
-    rev: 22.3.0
-    hooks:
-      - id: black
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v1.2.3
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
+      - id: autopep8-wrapper
+        args:
+        - -i
+        - --ignore=E265,E309,E501
       - id: debug-statements
         language_version: python3
+      - id: flake8
+        language_version: python3
       - id: check-yaml
         args:
           - --allow-multiple-documents

Dockerfile

@@ -8,7 +8,7 @@ ARG ARCH=x86_64
 COPY ./build/qemu-${ARCH}-static /usr/bin/
 
 # Add common checking tools
-RUN apk --no-cache add bash=~5.1 curl=~7.80 jq=~1.6
+RUN apk --no-cache add bash=~5.0 curl=~7.66 jq=~1.6
 WORKDIR /app
 
 # Add minitor user for running as non-root
@@ -24,7 +24,7 @@ COPY ./sample-config.yml /app/config.yml
 COPY ./README.md /app/
 COPY ./setup.py /app/
 COPY ./minitor /app/minitor
-RUN pip install --no-cache-dir -e .
+RUN pip install -e .
 
 # Copy scripts
 COPY ./scripts /app/scripts

README.md

@@ -2,10 +2,6 @@
 
 A minimal monitoring system
 
-## Important
-
-*This has been more or less replaced by a version written in Go. Check out [minitor-go](/iamthefij/minitor-go)*. There are no known issues with this version, but it is not really maintained anymore as I've migrated to the Go version since it uses fewer system resources.
-
 ## What does it do?
 
 Minitor accepts a YAML configuration file with a set of commands to run and a set of alerts to execute when those commands fail. It is designed to be as simple as possible and relies on other command line tools to do checks and issue alerts.

minitor/main.py

@@ -16,14 +16,15 @@ from prometheus_client import start_http_server
 
 DEFAULT_METRICS_PORT = 8080
 logging.basicConfig(
-    level=logging.ERROR, format="%(asctime)s %(levelname)s %(name)s %(message)s"
+    level=logging.ERROR,
+    format='%(asctime)s %(levelname)s %(name)s %(message)s'
 )
 logging.getLogger(__name__).addHandler(logging.NullHandler())
 
 
 def read_yaml(path):
     """Loads config from a YAML file with env interpolation"""
-    with open(path, "r") as yaml:
+    with open(path, 'r') as yaml:
         contents = yaml.read()
         return yamlenv.load(contents)
 
@@ -34,40 +35,44 @@ def validate_monitor_settings(settings):
     Note: Cannot yet validate the Alerts exist from within this class.
     That will be done by Minitor later
     """
-    name = settings.get("name")
+    name = settings.get('name')
     if not name:
-        raise InvalidMonitorException("Invalid name for monitor")
-    if not settings.get("command"):
-        raise InvalidMonitorException("Invalid command for monitor {}".format(name))
+        raise InvalidMonitorException('Invalid name for monitor')
+    if not settings.get('command'):
+        raise InvalidMonitorException(
+            'Invalid command for monitor {}'.format(name)
+        )
 
     type_assertions = (
-        ("check_interval", int),
-        ("alert_after", int),
-        ("alert_every", int),
+        ('check_interval', int),
+        ('alert_after', int),
+        ('alert_every', int),
     )
 
     for key, val_type in type_assertions:
         val = settings.get(key)
         if not isinstance(val, val_type):
             raise InvalidMonitorException(
-                "Invalid type on {}: {}. Expected {} and found {}".format(
+                'Invalid type on {}: {}. Expected {} and found {}'.format(
                     name, key, val_type.__name__, type(val).__name__
                 )
             )
 
     non_zero = (
-        "check_interval",
-        "alert_after",
+        'check_interval',
+        'alert_after',
     )
 
     for key in non_zero:
         if settings.get(key) == 0:
             raise InvalidMonitorException(
-                "Invalid value for {}: {}. Value cannot be 0".format(name, key)
+                'Invalid value for {}: {}. Value cannot be 0'.format(
+                    name, key
+                )
             )
 
 
-def maybe_decode(bstr, encoding="utf-8"):
+def maybe_decode(bstr, encoding='utf-8'):
     try:
         return bstr.decode(encoding)
     except TypeError:
@@ -77,14 +82,14 @@ def maybe_decode(bstr, encoding="utf-8"):
 def call_output(*popenargs, **kwargs):
     """Similar to check_output, but instead returns output and exception"""
     # So we can capture complete output, redirect sderr to stdout
-    kwargs.setdefault("stderr", subprocess.STDOUT)
+    kwargs.setdefault('stderr', subprocess.STDOUT)
     output, ex = None, None
     try:
         output = check_output(*popenargs, **kwargs)
     except CalledProcessError as e:
         output, ex = e.output, e
 
-    output = output.rstrip(b"\n")
+    output = output.rstrip(b'\n')
     return output, ex
 
 
@@ -108,23 +113,23 @@ class Monitor(object):
     def __init__(self, config, counter=None, logger=None):
         """Accepts a dictionary of configuration items to override defaults"""
         settings = {
-            "alerts": ["log"],
-            "check_interval": 30,
-            "alert_after": 4,
-            "alert_every": -1,
+            'alerts': ['log'],
+            'check_interval': 30,
+            'alert_after': 4,
+            'alert_every': -1,
         }
         settings.update(config)
         validate_monitor_settings(settings)
 
-        self.name = settings["name"]
-        self.command = settings["command"]
-        self.alert_down = settings.get("alert_down", [])
+        self.name = settings['name']
+        self.command = settings['command']
+        self.alert_down = settings.get('alert_down', [])
         if not self.alert_down:
-            self.alert_down = settings.get("alerts", [])
-        self.alert_up = settings.get("alert_up", [])
-        self.check_interval = settings.get("check_interval")
-        self.alert_after = settings.get("alert_after")
-        self.alert_every = settings.get("alert_every")
+            self.alert_down = settings.get('alerts', [])
+        self.alert_up = settings.get('alert_up', [])
+        self.check_interval = settings.get('check_interval')
+        self.alert_after = settings.get('alert_after')
+        self.alert_every = settings.get('alert_every')
 
         self.alert_count = 0
         self.last_check = None
@@ -135,18 +140,18 @@ class Monitor(object):
         self._counter = counter
         if logger is None:
             self._logger = logging.getLogger(
-                "{}({})".format(self.__class__.__name__, self.name)
+                '{}({})'.format(self.__class__.__name__, self.name)
             )
         else:
             self._logger = logger.getChild(
-                "{}({})".format(self.__class__.__name__, self.name)
+                '{}({})'.format(self.__class__.__name__, self.name)
             )
 
     def _count_check(self, is_success=True, is_alert=False):
         if self._counter is not None:
             self._counter.labels(
                 monitor=self.name,
-                status=("success" if is_success else "failure"),
+                status=('success' if is_success else 'failure'),
                 is_alert=is_alert,
             ).inc()
 
@@ -194,7 +199,7 @@ class Monitor(object):
         back_up = None
         if not self.is_up():
             back_up = MinitorAlert(
-                "{} check is up again!".format(self.name),
+                '{} check is up again!'.format(self.name),
                 self,
             )
         self.total_failure_count = 0
@@ -210,7 +215,7 @@ class Monitor(object):
         if self.total_failure_count < self.alert_after:
             return
 
-        failure_count = self.total_failure_count - self.alert_after
+        failure_count = (self.total_failure_count - self.alert_after)
         if self.alert_every > 0:
             # Otherwise, we should check against our alert_every
             should_alert = (failure_count % self.alert_every) == 0
@@ -218,15 +223,15 @@ class Monitor(object):
             # Only alert on the first failure
             should_alert = failure_count == 1
         else:
-            should_alert = failure_count >= (2**self.alert_count) - 1
+            should_alert = (failure_count >= (2 ** self.alert_count) - 1)
 
         if should_alert:
             self.alert_count += 1
             raise MinitorAlert(
-                "{} check has failed {} times".format(
+                '{} check has failed {} times'.format(
                     self.name, self.total_failure_count
                 ),
-                self,
+                self
             )
 
     def is_up(self):
@@ -238,18 +243,18 @@ class Alert(object):
     def __init__(self, name, config, counter=None, logger=None):
         """An alert must be named and have a config dict"""
         self.name = name
-        self.command = config.get("command")
+        self.command = config.get('command')
         if not self.command:
-            raise InvalidAlertException("Invalid alert {}".format(self.name))
+            raise InvalidAlertException('Invalid alert {}'.format(self.name))
 
         self._counter = counter
         if logger is None:
             self._logger = logging.getLogger(
-                "{}({})".format(self.__class__.__name__, self.name)
+                '{}({})'.format(self.__class__.__name__, self.name)
             )
         else:
             self._logger = logger.getChild(
-                "{}({})".format(self.__class__.__name__, self.name)
+                '{}({})'.format(self.__class__.__name__, self.name)
             )
 
     def _count_alert(self, monitor):
@@ -272,7 +277,7 @@ class Alert(object):
     def _format_datetime(self, dt):
         """Formats a datetime for an alert"""
         if dt is None:
-            return "Never"
+            return 'Never'
         return dt.isoformat()
 
     def alert(self, message, monitor):
@@ -308,72 +313,64 @@ class Minitor(object):
 
     def _parse_args(self, args=None):
         """Parses command line arguments and returns them"""
-        parser = ArgumentParser(description="Minimal monitoring")
+        parser = ArgumentParser(description='Minimal monitoring')
         parser.add_argument(
-            "--config",
-            "-c",
-            dest="config_path",
-            default="config.yml",
-            help="Path to the config YAML file to use",
+            '--config', '-c',
+            dest='config_path',
+            default='config.yml',
+            help='Path to the config YAML file to use',
         )
         parser.add_argument(
-            "--metrics",
-            "-m",
-            dest="metrics",
-            action="store_true",
-            help="Start webserver with metrics",
+            '--metrics', '-m',
+            dest='metrics',
+            action='store_true',
+            help='Start webserver with metrics',
         )
         parser.add_argument(
-            "--metrics-port",
-            "-p",
-            dest="metrics_port",
+            '--metrics-port', '-p',
+            dest='metrics_port',
             type=int,
             default=DEFAULT_METRICS_PORT,
-            help="Port to use when serving metrics",
+            help='Port to use when serving metrics',
         )
         parser.add_argument(
-            "--verbose",
-            "-v",
-            action="count",
-            help=(
-                "Adjust log verbosity by increasing arg count. Default log",
-                "level is ERROR. Level increases with each `v`",
-            ),
+            '--verbose', '-v',
+            action='count',
+            help=('Adjust log verbosity by increasing arg count. Default log',
+                  'level is ERROR. Level increases with each `v`'),
         )
         return parser.parse_args(args)
 
     def _setup(self, config_path):
         """Load all setup from YAML file at provided path"""
         config = read_yaml(config_path)
-        self.check_interval = config.get("check_interval", 30)
+        self.check_interval = config.get('check_interval', 30)
         self.monitors = [
             Monitor(
                 mon,
                 counter=self._monitor_counter,
                 logger=self._logger,
             )
-            for mon in config.get("monitors", [])
+            for mon in config.get('monitors', [])
         ]
         # Add default alert for logging
         self.alerts = {
-            "log": Alert(
-                "log",
-                {"command": ["echo", "{alert_message}!"]},
+            'log': Alert(
+                'log',
+                {'command': ['echo', '{alert_message}!']},
                 counter=self._alert_counter,
                 logger=self._logger,
             )
         }
-        self.alerts.update(
-            {
+        self.alerts.update({
             alert_name: Alert(
                 alert_name,
                 alert,
                 counter=self._alert_counter,
                 logger=self._logger,
             )
-                for alert_name, alert in config.get("alerts", {}).items()
-            }
-        )
+            for alert_name, alert in config.get('alerts', {}).items()
+        })
 
     def _validate_monitors(self):
         """Validates monitors are valid against other config values"""
@@ -381,7 +378,7 @@ class Minitor(object):
             # Validate that the interval is valid
             if monitor.check_interval < self.check_interval:
                 raise InvalidMonitorException(
-                    "Monitor {} check interval is lower global value {}".format(
+                    'Monitor {} check interval is lower global value {}'.format(
                         monitor.name, self.check_interval
                     )
                 )
@@ -389,26 +386,26 @@ class Minitor(object):
             for alert in chain(monitor.alert_down, monitor.alert_up):
                 if alert not in self.alerts:
                     raise InvalidMonitorException(
-                        "Monitor {} contains an unknown alert: {}".format(
+                        'Monitor {} contains an unknown alert: {}'.format(
                             monitor.name, alert
                         )
                     )
 
     def _init_metrics(self):
         self._alert_counter = Counter(
-            "minitor_alert_total",
-            "Number of Minitor alerts",
-            ["alert", "monitor"],
+            'minitor_alert_total',
+            'Number of Minitor alerts',
+            ['alert', 'monitor'],
         )
         self._monitor_counter = Counter(
-            "minitor_check_total",
-            "Number of Minitor checks",
-            ["monitor", "status", "is_alert"],
+            'minitor_check_total',
+            'Number of Minitor checks',
+            ['monitor', 'status', 'is_alert'],
         )
         self._monitor_status_gauge = Gauge(
-            "minitor_monitor_up_count",
-            "Currently responsive monitors",
-            ["monitor"],
+            'minitor_monitor_up_count',
+            'Currently responsive monitors',
+            ['monitor'],
         )
 
     def _loop(self):
@@ -423,7 +420,9 @@ class Minitor(object):
                 result = monitor.check()
                 if result is not None:
                     self._logger.info(
-                        "%s: %s", monitor.name, "SUCCESS" if result else "FAILURE"
+                        '%s: %s',
+                        monitor.name,
+                        'SUCCESS' if result else 'FAILURE'
                     )
             except MinitorAlert as minitor_alert:
                 self._logger.warning(minitor_alert)
@@ -476,5 +475,5 @@ def main(args=None):
     return 0
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     sys.exit(main())

setup.py

@@ -7,49 +7,47 @@ from setuptools import setup
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
-with open(path.join(here, "README.md"), encoding="utf-8") as f:
+with open(path.join(here, 'README.md'), encoding='utf-8') as f:
     long_description = f.read()
 
 setup(
-    name="minitor",
-    version="1.0.3",
-    description="A minimal monitoring tool",
+    name='minitor',
+    version='1.0.3',
+    description='A minimal monitoring tool',
     long_description=long_description,
-    long_description_content_type="text/markdown",
-    url="https://git.iamthefij.com/iamthefij/minitor",
-    download_url=("https://git.iamthefij.com/iamthefij/minitor/archive/master.tar.gz"),
-    author="Ian Fijolek",
-    author_email="ian@iamthefij.com",
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Intended Audience :: Developers",
-        "Intended Audience :: System Administrators",
-        "Topic :: System :: Monitoring",
-        "License :: OSI Approved :: Apache Software License",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-    ],
-    keywords="minitor monitoring alerting",
-    packages=find_packages(
-        exclude=[
-            "contrib",
-            "docs",
-            "examples",
-            "scripts",
-            "tests",
-        ]
+    long_description_content_type='text/markdown',
+    url='https://git.iamthefij.com/iamthefij/minitor',
+    download_url=(
+        'https://git.iamthefij.com/iamthefij/minitor/archive/master.tar.gz'
     ),
+    author='Ian Fijolek',
+    author_email='ian@iamthefij.com',
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Intended Audience :: Developers',
+        'Intended Audience :: System Administrators',
+        'Topic :: System :: Monitoring',
+        'License :: OSI Approved :: Apache Software License',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+    ],
+    keywords='minitor monitoring alerting',
+    packages=find_packages(exclude=[
+        'contrib',
+        'docs',
+        'examples',
+        'scripts',
+        'tests',
+    ]),
     install_requires=[
-        "prometheus_client",
-        "yamlenv",
+        'prometheus_client',
+        'yamlenv',
     ],
     entry_points={
-        "console_scripts": [
-            "minitor=minitor.main:main",
+        'console_scripts': [
+            'minitor=minitor.main:main',
         ],
     },
 )

tests/alert_test.py

@@ -9,47 +9,54 @@ from tests.util import assert_called_once_with
 
 
 class TestAlert(object):
+
     @pytest.fixture
     def monitor(self):
-        return Monitor(
-            {
-                "name": "Dummy Monitor",
-                "command": ["echo", "foo"],
-            }
-        )
+        return Monitor({
+            'name': 'Dummy Monitor',
+            'command': ['echo', 'foo'],
+        })
 
     @pytest.fixture
     def echo_alert(self):
         return Alert(
-            "log",
+            'log',
             {
-                "command": [
-                    "echo",
-                    (
-                        "{monitor_name} has failed {failure_count} time(s)!\n"
-                        "We have alerted {alert_count} time(s)\n"
-                        "Last success was {last_success}\n"
-                        "Last output was: {last_output}"
-                    ),
+                'command': [
+                    'echo', (
+                        '{monitor_name} has failed {failure_count} time(s)!\n'
+                        'We have alerted {alert_count} time(s)\n'
+                        'Last success was {last_success}\n'
+                        'Last output was: {last_output}'
+                    )
                 ]
-            },
+            }
         )
 
     @pytest.mark.parametrize(
-        "last_success,expected_success",
-        [(None, "Never"), (datetime(2018, 4, 10), "2018-04-10T00:00:00")],
+        'last_success,expected_success',
+        [
+            (None, 'Never'),
+            (datetime(2018, 4, 10), '2018-04-10T00:00:00')
+        ]
     )
-    def test_simple_alert(self, monitor, echo_alert, last_success, expected_success):
+    def test_simple_alert(
+        self,
+        monitor,
+        echo_alert,
+        last_success,
+        expected_success
+    ):
         monitor.alert_count = 1
-        monitor.last_output = "beep boop"
+        monitor.last_output = 'beep boop'
         monitor.last_success = last_success
         monitor.total_failure_count = 1
-        with patch.object(echo_alert._logger, "error") as mock_error:
-            echo_alert.alert("Exception message", monitor)
+        with patch.object(echo_alert._logger, 'error') as mock_error:
+            echo_alert.alert('Exception message', monitor)
             assert_called_once_with(
                 mock_error,
-                "Dummy Monitor has failed 1 time(s)!\n"
-                "We have alerted 1 time(s)\n"
-                "Last success was " + expected_success + "\n"
-                "Last output was: beep boop",
+                'Dummy Monitor has failed 1 time(s)!\n'
+                'We have alerted 1 time(s)\n'
+                'Last success was ' + expected_success + '\n'
+                'Last output was: beep boop'
             )

tests/minitor_test.py

@@ -6,31 +6,30 @@ from minitor.main import Minitor
 
 
 class TestMinitor(object):
+
     def test_call_output(self):
         # valid command should have result and no exception
-        output, ex = call_output(["echo", "test"])
-        assert output == b"test"
+        output, ex = call_output(['echo', 'test'])
+        assert output == b'test'
         assert ex is None
 
-        output, ex = call_output(["ls", "--not-a-real-flag"])
-        assert output.startswith(b"ls: ")
+        output, ex = call_output(['ls', '--not-a-real-flag'])
+        assert output.startswith(b'ls: ')
         assert ex is not None
 
     def test_run(self):
         """Doesn't really check much, but a simple integration sanity test"""
         test_loop_count = 5
-        os.environ.update(
-            {
-                "MAILGUN_API_KEY": "test-mg-key",
-                "AVAILABLE_NUMBER": "555-555-5050",
-                "MY_PHONE": "555-555-0505",
-                "ACCOUNT_SID": "test-account-id",
-                "AUTH_TOKEN": "test-account-token",
-            }
-        )
-        args = "--config ./sample-config.yml".split(" ")
+        os.environ.update({
+            'MAILGUN_API_KEY': 'test-mg-key',
+            'AVAILABLE_NUMBER': '555-555-5050',
+            'MY_PHONE': '555-555-0505',
+            'ACCOUNT_SID': 'test-account-id',
+            'AUTH_TOKEN': 'test-account-token',
+        })
+        args = '--config ./sample-config.yml'.split(' ')
         minitor = Minitor()
-        with patch.object(minitor, "_loop"):
+        with patch.object(minitor, '_loop'):
             minitor.run(args)
             # Skip the loop, but run a single check
             for _ in range(test_loop_count):

tests/monitor_test.py

@@ -11,44 +11,40 @@ from tests.util import assert_called_once
 
 
 class TestMonitor(object):
+
     @pytest.fixture
     def monitor(self):
-        return Monitor(
-            {
-                "name": "Sample Monitor",
-                "command": ["echo", "foo"],
-                "alert_down": ["log"],
-                "alert_up": ["log"],
-                "check_interval": 1,
-                "alert_after": 1,
-                "alert_every": 1,
-            }
-        )
+        return Monitor({
+            'name': 'Sample Monitor',
+            'command': ['echo', 'foo'],
+            'alert_down': ['log'],
+            'alert_up': ['log'],
+            'check_interval': 1,
+            'alert_after': 1,
+            'alert_every': 1,
+        })
 
-    @pytest.mark.parametrize(
-        "settings",
-        [
-            {"alert_after": 0},
-            {"alert_every": 0},
-            {"check_interval": 0},
-            {"alert_after": "invalid"},
-            {"alert_every": "invalid"},
-            {"check_interval": "invalid"},
-        ],
-    )
+    @pytest.mark.parametrize('settings', [
+        {'alert_after': 0},
+        {'alert_every': 0},
+        {'check_interval': 0},
+        {'alert_after': 'invalid'},
+        {'alert_every': 'invalid'},
+        {'check_interval': 'invalid'},
+    ])
     def test_monitor_invalid_configuration(self, settings):
         with pytest.raises(InvalidMonitorException):
             validate_monitor_settings(settings)
 
     @pytest.mark.parametrize(
-        "alert_after",
+        'alert_after',
         [1, 20],
-        ids=lambda arg: "alert_after({})".format(arg),
+        ids=lambda arg: 'alert_after({})'.format(arg),
     )
     @pytest.mark.parametrize(
-        "alert_every",
+        'alert_every',
         [-1, 1, 2, 1440],
-        ids=lambda arg: "alert_every({})".format(arg),
+        ids=lambda arg: 'alert_every({})'.format(arg),
     )
     def test_monitor_alert_after(self, monitor, alert_after, alert_every):
         monitor.alert_after = alert_after
@@ -63,14 +59,14 @@ class TestMonitor(object):
             monitor.failure()
 
     @pytest.mark.parametrize(
-        "alert_after",
+        'alert_after',
         [1, 20],
-        ids=lambda arg: "alert_after({})".format(arg),
+        ids=lambda arg: 'alert_after({})'.format(arg),
     )
     @pytest.mark.parametrize(
-        "alert_every",
+        'alert_every',
         [1, 2, 1440],
-        ids=lambda arg: "alert_every({})".format(arg),
+        ids=lambda arg: 'alert_every({})'.format(arg),
     )
     def test_monitor_alert_every(self, monitor, alert_after, alert_every):
         monitor.alert_after = alert_after
@@ -106,27 +102,27 @@ class TestMonitor(object):
             else:
                 monitor.failure()
 
-    @pytest.mark.parametrize("last_check", [None, datetime(2018, 4, 10)])
+    @pytest.mark.parametrize('last_check', [None, datetime(2018, 4, 10)])
     def test_monitor_should_check(self, monitor, last_check):
         monitor.last_check = last_check
         assert monitor.should_check()
 
     def test_monitor_check_fail(self, monitor):
         assert monitor.last_output is None
-        with patch.object(monitor, "failure") as mock_failure:
-            monitor.command = ["ls", "--not-real"]
+        with patch.object(monitor, 'failure') as mock_failure:
+            monitor.command = ['ls', '--not-real']
             assert not monitor.check()
             assert_called_once(mock_failure)
             assert monitor.last_output is not None
 
     def test_monitor_check_success(self, monitor):
         assert monitor.last_output is None
-        with patch.object(monitor, "success") as mock_success:
+        with patch.object(monitor, 'success') as mock_success:
             assert monitor.check()
             assert_called_once(mock_success)
             assert monitor.last_output is not None
 
-    @pytest.mark.parametrize("failure_count", [0, 1])
+    @pytest.mark.parametrize('failure_count', [0, 1])
     def test_monitor_success(self, monitor, failure_count):
         monitor.alert_count = 0
         monitor.total_failure_count = failure_count