Add context command

.github/workflows/test_code.yaml

@@ -4,24 +4,24 @@ name: Test code
 # Run workflow on pushes to matching branches
 on:  # yamllint disable-line rule:truthy
   push:
-    branches: [develop]
+    branches: [develop, python-migration]
   pull_request:
-    branches: [develop]
+    branches: [develop, python-migration]
 
 jobs:
-  test_powershell:
+  test_python:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
-      - name: Install requirements
-        shell: pwsh
-        run: |
-          Set-PSRepository PSGallery -InstallationPolicy Trusted
-          deployment/CheckRequirements.ps1 -InstallMissing -IncludeDev
-      - name: Test PowerShell
-        shell: pwsh
-        run: ./tests/Run_Pester_Tests.ps1
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.11
+      - name: Install hatch
+        run: pip install hatch
+      - name: Test Python
+        run: hatch run test:test
 
   test_markdown_links:
     runs-on: ubuntu-latest

data_safe_haven/README.md

@@ -9,16 +9,17 @@ Install the following requirements before starting
 
 - Run the following to initialise the deployment [approx 5 minutes]:
 
-```bash
-> dsh init
+```console
+> dsh context add ...
+> dsh context create
 ```
 
 You will be prompted for various project settings.
 If you prefer to enter these at the command line, run `dsh init -h` to see the necessary command line flags.
 
 - Next deploy the Safe Haven Management (SHM) infrastructure [approx 30 minutes]:
 
-```bash
+```console
 > dsh deploy shm
 ```
 
@@ -29,13 +30,13 @@ Run `dsh deploy shm -h` to see the necessary command line flags and provide them
   Note that the phone number must be in full international format.
   Note that the country code is the two letter `ISO 3166-1 Alpha-2` code.
 
-```bash
+```console
 > dsh admin add-users <my CSV users file>
 ```
 
 - Next deploy the infrastructure for one or more Secure Research Environments (SREs) [approx 30 minutes]:
 
-```bash
+```console
 > dsh deploy sre <SRE name>
 ```
 
@@ -44,7 +45,7 @@ Run `dsh deploy sre -h` to see the necessary command line flags and provide them
 
 - Next add one or more existing users to your SRE
 
-```bash
+```console
 > dsh admin register-users -s <SRE name> <username1> <username2>
 ```
 
@@ -54,44 +55,45 @@ where you must specify the usernames for each user you want to add to this SRE
 
 - Run the following to list the currently available users
 
-```bash
+```console
 > dsh admin list-users
 ```
 
 ## Removing a deployed Data Safe Haven
 
 - Run the following if you want to teardown a deployed SRE:
 
-```bash
+```console
 > dsh teardown sre <SRE name>
 ```
 
 - Run the following if you want to teardown the deployed SHM:
 
-```bash
+```console
 > dsh teardown shm
 ```
 
-- Run the following if you want to teardown the deployed Data Safe Haven backend:
+- Run the following if you want to teardown the deployed Data Safe Haven context:
 
-```bash
-> dsh teardown backend
+```console
+> dsh context teardown
 ```
 
 ## Code structure
 
 - administration
     - this is where we keep utility commands for adminstrators of a deployed DSH
     - eg. "add a user"; "remove a user from an SRE"
-- backend
+- context
     - in order to use the Pulumi Azure backend we need a KeyVault, Identity and Storage Account
     - this code deploys those resources to bootstrap the rest of the Pulumi-based code
+    - the storage account is also used to store configuration, so that it can be shared by admins
 - commands
     - the main `dsh` command line entrypoint lives in `cli.py`
     - the subsidiary `typer` command line entrypoints (eg. `dsh deploy shm`) live here
 - config
     - serialises and deserialises a config file from Azure
-    - `backend_settings` manages basic settings related to the Azure backend: arguably this could/should live in `backend`
+    - `context_settings` manages basic settings related to the context: arguably this could/should live in `context`
 - exceptions
     - definitions of a Python exception hierarchy
 - external

data_safe_haven/cli.py

@@ -7,8 +7,8 @@
 from data_safe_haven import __version__
 from data_safe_haven.commands import (
     admin_command_group,
+    context_command_group,
     deploy_command_group,
-    initialise_command,
     teardown_command_group,
 )
 from data_safe_haven.exceptions import DataSafeHavenError
@@ -69,6 +69,9 @@ def main() -> None:
         name="admin",
         help="Perform administrative tasks for a Data Safe Haven deployment.",
     )
+    application.add_typer(
+        context_command_group, name="context", help="Manage Data Safe Haven contexts."
+    )
     application.add_typer(
         deploy_command_group,
         name="deploy",
@@ -80,11 +83,6 @@ def main() -> None:
         help="Tear down a Data Safe Haven component.",
     )
 
-    # Register direct subcommands
-    application.command(name="init", help="Initialise a Data Safe Haven deployment.")(
-        initialise_command
-    )
-
     # Start the application
     try:
         application()

data_safe_haven/commands/__init__.py

@@ -1,11 +1,11 @@
 from .admin import admin_command_group
+from .context import context_command_group
 from .deploy import deploy_command_group
-from .init import initialise_command
 from .teardown import teardown_command_group
 
 __all__ = [
     "admin_command_group",
+    "context_command_group",
     "deploy_command_group",
-    "initialise_command",
     "teardown_command_group",
 ]

data_safe_haven/commands/context.py

@@ -0,0 +1,174 @@
+"""Command group and entrypoints for managing a DSH context"""
+from typing import Annotated, Optional
+
+import typer
+from rich import print
+
+from data_safe_haven.config import Config, ContextSettings
+from data_safe_haven.config.context_settings import default_config_file_path
+from data_safe_haven.context import Context
+from data_safe_haven.functions import validate_aad_guid
+
+context_command_group = typer.Typer()
+
+
+@context_command_group.command()
+def show() -> None:
+    """Show information about the selected context."""
+    settings = ContextSettings.from_file()
+
+    current_context_key = settings.selected
+    current_context = settings.context
+
+    print(f"Current context: [green]{current_context_key}")
+    print(f"\tName: {current_context.name}")
+    print(f"\tAdmin Group ID: {current_context.admin_group_id}")
+    print(f"\tSubscription name: {current_context.subscription_name}")
+    print(f"\tLocation: {current_context.location}")
+
+
+@context_command_group.command()
+def available() -> None:
+    """Show the available contexts."""
+    settings = ContextSettings.from_file()
+
+    current_context_key = settings.selected
+    available = settings.available
+
+    available.remove(current_context_key)
+    available = [f"[green]{current_context_key}*[/]", *available]
+
+    print("\n".join(available))
+
+
+@context_command_group.command()
+def switch(
+    name: Annotated[str, typer.Argument(help="Name of the context to switch to.")]
+) -> None:
+    """Switch the context."""
+    settings = ContextSettings.from_file()
+    settings.selected = name
+    settings.write()
+
+
+@context_command_group.command()
+def add(
+    key: Annotated[str, typer.Argument(help="Name of the context to add.")],
+    admin_group: Annotated[
+        str,
+        typer.Option(
+            help="The ID of an Azure group containing all administrators.",
+            callback=validate_aad_guid,
+        ),
+    ],
+    location: Annotated[
+        str,
+        typer.Option(
+            help="The Azure location to deploy resources into.",
+        ),
+    ],
+    name: Annotated[
+        str,
+        typer.Option(
+            help="The human friendly name to give this Data Safe Haven deployment.",
+        ),
+    ],
+    subscription: Annotated[
+        str,
+        typer.Option(
+            help="The name of an Azure subscription to deploy resources into.",
+        ),
+    ],
+) -> None:
+    """Add a new context."""
+    if default_config_file_path().exists():
+        settings = ContextSettings.from_file()
+        settings.add(
+            key=key,
+            admin_group_id=admin_group,
+            location=location,
+            name=name,
+            subscription_name=subscription,
+        )
+    else:
+        # Bootstrap context settings file
+        settings = ContextSettings(
+            {
+                "selected": key,
+                "contexts": {
+                    key: {
+                        "admin_group_id": admin_group,
+                        "location": location,
+                        "name": name,
+                        "subscription_name": subscription,
+                    }
+                },
+            }
+        )
+    settings.write()
+
+
+@context_command_group.command()
+def update(
+    admin_group: Annotated[
+        Optional[str],  # noqa: UP007
+        typer.Option(
+            help="The ID of an Azure group containing all administrators.",
+            callback=validate_aad_guid,
+        ),
+    ] = None,
+    location: Annotated[
+        Optional[str],  # noqa: UP007
+        typer.Option(
+            help="The Azure location to deploy resources into.",
+        ),
+    ] = None,
+    name: Annotated[
+        Optional[str],  # noqa: UP007
+        typer.Option(
+            help="The human friendly name to give this Data Safe Haven deployment.",
+        ),
+    ] = None,
+    subscription: Annotated[
+        Optional[str],  # noqa: UP007
+        typer.Option(
+            help="The name of an Azure subscription to deploy resources into.",
+        ),
+    ] = None,
+) -> None:
+    """Update the selected context."""
+    settings = ContextSettings.from_file()
+    settings.update(
+        admin_group_id=admin_group,
+        location=location,
+        name=name,
+        subscription_name=subscription,
+    )
+    settings.write()
+
+
+@context_command_group.command()
+def remove(
+    key: Annotated[str, typer.Argument(help="Name of the context to add.")],
+) -> None:
+    """Remove the selected context."""
+    settings = ContextSettings.from_file()
+    settings.remove(key)
+    settings.write()
+
+
+@context_command_group.command()
+def create() -> None:
+    """Create Data Safe Haven context infrastructure."""
+    config = Config()
+    context = Context(config)
+    context.create()
+    context.config.upload()
+
+
+@context_command_group.command()
+def teardown() -> None:
+    """Tear down Data Safe Haven context infrastructure."""
+    config = Config()
+    context = Context(config)
+    context.teardown()