Merge pull request #154 from cerc-io/dboreham/port-command

Implement deploy-system port command

Former-commit-id: 208df97c96b09bd1d80e3e43607321e199300352

app/data/compose/docker-compose-test.yml

@@ -3,3 +3,5 @@ services:
   test:
     image: cerc/test-container:local
     restart: always
+    ports:
+      - "80"

app/data/container-build/cerc-test-container/Dockerfile

@@ -1,4 +1,11 @@
-FROM alpine:latest
+FROM ubuntu:latest
+
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive && export DEBCONF_NOWARNINGS="yes" && \
+    apt-get install -y software-properties-common && \
+    apt-get install -y nginx && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+EXPOSE 80
 
 COPY run.sh /app/run.sh
 

app/data/container-build/cerc-test-container/run.sh

@@ -12,5 +12,5 @@ else
     echo `date` > $EXISTSFILENAME
 fi
 
-# Sleep forever to keep docker happy
-while true; do sleep 10; done
+# Run nginx which will block here forever
+/usr/sbin/nginx -g "daemon off;"

app/data/stacks/test/README.md

@@ -0,0 +1,3 @@
+# Test Stack
+
+A stack for test/demo purposes.

app/data/stacks/test/stack.yml

@@ -0,0 +1,7 @@
+version: "1.0"
+name: test
+description: "A test stack"
+containers:
+  - cerc/test-container
+pods:
+  - test

app/deploy_system.py

@@ -30,9 +30,9 @@ from .util import include_exclude_check, get_parsed_stack_config
 @click.option("--exclude", help="don\'t start these components")
 @click.option("--cluster", help="specify a non-default cluster name")
 @click.argument('command', required=True)  # help: command: up|down|ps
-@click.argument('services', nargs=-1)  # help: command: up|down|ps <service1> <service2>
+@click.argument('extra_args', nargs=-1)  # help: command: up|down|ps <service1> <service2>
 @click.pass_context
-def command(ctx, include, exclude, cluster, command, services):
+def command(ctx, include, exclude, cluster, command, extra_args):
     '''deploy a stack'''
 
     # TODO: implement option exclusion and command value constraint lost with the move from argparse to click
@@ -87,17 +87,27 @@ def command(ctx, include, exclude, cluster, command, services):
     # See: https://gabrieldemarmiesse.github.io/python-on-whales/sub-commands/compose/
     docker = DockerClient(compose_files=compose_files, compose_project_name=cluster)
 
-    services_list = list(services) or None
+    extra_args_list = list(extra_args) or None
 
     if not dry_run:
         if command == "up":
             if verbose:
-                print(f"Running compose up for services: {services_list}")
-            docker.compose.up(detach=True, services=services_list)
+                print(f"Running compose up for extra_args: {extra_args_list}")
+            docker.compose.up(detach=True, services=extra_args_list)
         elif command == "down":
             if verbose:
                 print("Running compose down")
             docker.compose.down()
+        elif command == "port":
+            if extra_args_list is None or len(extra_args_list) < 2:
+                print("Usage: port <service> <exposed-port>")
+                sys.exit(1)
+            service_name = extra_args_list[0]
+            exposed_port = extra_args_list[1]
+            if verbose:
+                print("Running compose port")
+            mapped_port_data = docker.compose.port(service_name, exposed_port)
+            print(f"{mapped_port_data[0]}:{mapped_port_data[1]}")
         elif command == "ps":
             if verbose:
                 print("Running compose ps")