outposts: implement docker controller

passbook/outposts/controllers/compose.py

@@ -1,36 +0,0 @@
-"""Docker Compose controller"""
-from yaml import safe_dump
-
-from passbook import __version__
-from passbook.outposts.controllers.base import BaseController
-
-
-class DockerComposeController(BaseController):
-    """Docker Compose controller"""
-
-    image_base = "beryju/passbook"
-
-    def run(self):
-        self.logger.warning("DockerComposeController does not implement run")
-        raise NotImplementedError
-
-    def get_static_deployment(self) -> str:
-        """Generate docker-compose yaml for proxy, version 3.5"""
-        ports = [f"{x}:{x}" for _, x in self.deployment_ports.items()]
-        compose = {
-            "version": "3.5",
-            "services": {
-                f"passbook_{self.outpost.type}": {
-                    "image": f"{self.image_base}-{self.outpost.type}:{__version__}",
-                    "ports": ports,
-                    "environment": {
-                        "PASSBOOK_HOST": self.outpost.config.passbook_host,
-                        "PASSBOOK_INSECURE": str(
-                            self.outpost.config.passbook_host_insecure
-                        ),
-                        "PASSBOOK_TOKEN": self.outpost.token.token_uuid.hex,
-                    },
-                }
-            },
-        }
-        return safe_dump(compose, default_flow_style=False)

passbook/outposts/controllers/docker.py

@@ -0,0 +1,76 @@
+"""Docker controller"""
+from docker import DockerClient, from_env
+from docker.errors import NotFound
+from docker.models.containers import Container
+from yaml import safe_dump
+
+from passbook import __version__
+from passbook.outposts.controllers.base import BaseController
+
+
+class DockerController(BaseController):
+    """Docker controller"""
+
+    client: DockerClient
+
+    container: Container
+
+    image_base = "beryju/passbook"
+
+    def __init__(self, outpost_pk: str) -> None:
+        super().__init__(outpost_pk)
+        self.client = from_env()
+
+    def _get_container(self) -> Container:
+        container_name = f"passbook-proxy-{self.outpost.uuid.hex}"
+        try:
+            return self.client.containers.get(container_name)
+        except NotFound:
+            return self.client.containers.create(
+                image=f"{self.image_base}-{self.outpost.type}:{__version__}",
+                name=f"passbook-proxy-{self.outpost.uuid.hex}",
+                detach=True,
+                ports={x: x for _, x in self.deployment_ports.items()},
+                environment={
+                    "PASSBOOK_HOST": self.outpost.config.passbook_host,
+                    "PASSBOOK_INSECURE": str(
+                        self.outpost.config.passbook_host_insecure
+                    ),
+                    "PASSBOOK_TOKEN": self.outpost.token.token_uuid.hex,
+                },
+            )
+
+    def run(self):
+        container = self._get_container()
+        # Check if the container is out of date, delete it and retry
+        if len(container.image.tags) > 0:
+            tag: str = container.iamge.tags[0]
+            _, _, version = tag.partition(":")
+            if version != __version__:
+                container.kill()
+                container.remove(force=True)
+                return self.run()
+        if container.status != "running":
+            container.start()
+        return None
+
+    def get_static_deployment(self) -> str:
+        """Generate docker-compose yaml for proxy, version 3.5"""
+        ports = [f"{x}:{x}" for _, x in self.deployment_ports.items()]
+        compose = {
+            "version": "3.5",
+            "services": {
+                f"passbook_{self.outpost.type}": {
+                    "image": f"{self.image_base}-{self.outpost.type}:{__version__}",
+                    "ports": ports,
+                    "environment": {
+                        "PASSBOOK_HOST": self.outpost.config.passbook_host,
+                        "PASSBOOK_INSECURE": str(
+                            self.outpost.config.passbook_host_insecure
+                        ),
+                        "PASSBOOK_TOKEN": self.outpost.token.token_uuid.hex,
+                    },
+                }
+            },
+        }
+        return safe_dump(compose, default_flow_style=False)

passbook/outposts/migrations/0006_auto_20201003_2239.py

@@ -0,0 +1,26 @@
+# Generated by Django 3.1.2 on 2020-10-03 22:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("passbook_outposts", "0005_auto_20200909_1733"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="outpost",
+            name="deployment_type",
+            field=models.TextField(
+                choices=[
+                    ("kubernetes", "Kubernetes"),
+                    ("docker", "Docker"),
+                    ("custom", "Custom"),
+                ],
+                default="custom",
+                help_text="Select between passbook-managed deployment types or a custom deployment.",
+            ),
+        ),
+    ]

passbook/outposts/models.py

@@ -59,7 +59,8 @@ class OutpostType(models.TextChoices):
 class OutpostDeploymentType(models.TextChoices):
     """Deployment types that are managed through passbook"""
 
-    # KUBERNETES = "kubernetes"
+    KUBERNETES = "kubernetes"
+    DOCKER = "docker"
     CUSTOM = "custom"
 
 

passbook/outposts/tasks.py

@@ -12,6 +12,7 @@ from passbook.outposts.models import (
     OutpostModel,
     OutpostType,
 )
+from passbook.providers.proxy.controllers.docker import ProxyDockerController
 from passbook.providers.proxy.controllers.kubernetes import ProxyKubernetesController
 from passbook.root.celery import CELERY_APP
 
@@ -20,20 +21,27 @@ LOGGER = get_logger()
 
 @CELERY_APP.task(bind=True)
 # pylint: disable=unused-argument
-def outpost_k8s_controller(self):
-    """Launch Kubernetes Controller for all Outposts which are deployed in kubernetes"""
-    for outpost in Outpost.objects.filter(
-        deployment_type=OutpostDeploymentType.KUBERNETES
+def outpost_controller(self):
+    """Launch Controller for all Outposts which support it"""
+    for outpost in Outpost.objects.exclude(
+        deployment_type=OutpostDeploymentType.CUSTOM
     ):
-        outpost_k8s_controller_single.delay(outpost.pk.hex, outpost.type)
+        outpost_controller_single.delay(
+            outpost.pk.hex, outpost.deployment_type, outpost.type
+        )
 
 
 @CELERY_APP.task(bind=True)
 # pylint: disable=unused-argument
-def outpost_k8s_controller_single(self, outpost: str, outpost_type: str):
-    """Launch Kubernetes manager and reconcile deployment/service/etc"""
+def outpost_controller_single(
+    self, outpost: str, deployment_type: str, outpost_type: str
+):
+    """Launch controller and reconcile deployment/service/etc"""
     if outpost_type == OutpostType.PROXY:
-        ProxyKubernetesController(outpost).run()
+        if deployment_type == OutpostDeploymentType.KUBERNETES:
+            ProxyKubernetesController(outpost).run()
+        if deployment_type == OutpostDeploymentType.DOCKER:
+            ProxyDockerController(outpost).run()
 
 
 @CELERY_APP.task()

passbook/outposts/views.py

@@ -11,7 +11,7 @@ from guardian.shortcuts import get_objects_for_user
 from structlog import get_logger
 
 from passbook.core.models import User
-from passbook.outposts.controllers.compose import DockerComposeController
+from passbook.outposts.controllers.docker import DockerController
 from passbook.outposts.models import Outpost, OutpostType
 from passbook.providers.proxy.controllers.kubernetes import ProxyKubernetesController
 
@@ -35,7 +35,7 @@ class DockerComposeView(LoginRequiredMixin, View):
         )
         manifest = ""
         if outpost.type == OutpostType.PROXY:
-            controller = DockerComposeController(outpost_pk)
+            controller = DockerController(outpost_pk)
             manifest = controller.get_static_deployment()
 
         return HttpResponse(manifest, content_type="text/vnd.yaml")

passbook/providers/proxy/controllers/docker.py

@@ -0,0 +1,13 @@
+"""Proxy Provider Docker Contoller"""
+from passbook.outposts.controllers.docker import DockerController
+
+
+class ProxyDockerController(DockerController):
+    """Proxy Provider Docker Contoller"""
+
+    def __init__(self, outpost_pk: str):
+        super().__init__(outpost_pk)
+        self.deployment_ports = {
+            "http": 4180,
+            "https": 4443,
+        }