feat: Generate a Graphviz DOT diagram of an Organization (#13)

### Added

- Adds support for generating a Graphviz diagram of an Organization with the new
  `OrganizationDataBuilder.to_dot()` function
- Adds `DOT` as a supported output format for the `organization dump-all` command

### Changed

- breaking: Renames `organization dump-json` CLI command to `organization dump-all`

CHANGELOG.md

@@ -14,6 +14,16 @@ the unreleased section to the section for the new release.
 
 No unreleased changes.
 
+### Added
+
+- Adds support for generating a Graphviz diagram of an Organization with the new
+  `OrganizationDataBuilder.to_dot()` function
+- Adds `DOT` as a supported output format for the `organization dump-all` command
+
+### Changed
+
+- breaking: Renames `organization dump-json` CLI command to `organization dump-all`
+
 ## [0.1.0-beta2] - 2021-06-16
 
 ### Added

aws_data_tools/builders/organizations.py

@@ -5,6 +5,8 @@
 from dataclasses import dataclass, field, InitVar
 from typing import Any, Dict, List, Union
 
+from graphviz import Digraph, unflatten
+
 from ..client import APIClient
 from ..models.base import ModelBase
 from ..utils import query_tags
@@ -78,6 +80,34 @@ def api(self, func: str, **kwargs) -> Union[List[Dict[str, Any]], Dict[str, Any]
             self.Connect()
         return self.client.api(func, **kwargs)
 
+    def to_dot(self) -> str:
+        """Return the organization as a GraphViz DOT diagram"""
+        graph = Digraph("Organization", filename="organization.dot")
+        nodes = []
+        nodes.append(self.dm.root)
+        nodes.extend(self.dm.organizational_units)
+        nodes.extend(self.dm.accounts)
+        for node in nodes:
+            if getattr(node, "parent", None) is None:
+                continue
+            shape = None
+            if isinstance(node, Root):
+                shape = "circle"
+            elif isinstance(node, OrganizationalUnit):
+                shape = "box"
+            elif isinstance(node, Account):
+                shape = "ellipse"
+            else:
+                continue
+            graph.node(node.id, label=node.name, shape=shape)
+            graph.edge(node.parent.id, node.id)
+        return unflatten(
+            graph.source,
+            stagger=10,
+            fanout=10,
+            chain=10,
+        )
+
     def __e_organization(self) -> Dict[str, str]:
         """Extract org description data from the DescribeOrganization API"""
         return self.api("describe_organization").get("organization")

aws_data_tools/cli/__init__.py

@@ -64,6 +64,14 @@ def handle_error(ctx, err_msg, tb=None):
 
 
 @organization.command(short_help="Dump org data as JSON")
+@option(
+    "--format",
+    "-f",
+    "format_",
+    default="JSON",
+    type=Choice(["DOT", "JSON", "YAML"], case_sensitive=False),
+    help="The output format for the data",
+)
 @option(
     "--no-accounts",
     default=False,
@@ -76,24 +84,16 @@ def handle_error(ctx, err_msg, tb=None):
     is_flag=True,
     help="Exclude policy data from the model",
 )
-@option(
-    "--format",
-    "-f",
-    "format_",
-    default="JSON",
-    type=Choice(["JSON", "YAML"], case_sensitive=False),
-    help="The output format for the data",
-)
 @option("--out-file", "-o", help="File path to write data instead of stdout")
 @pass_context
-def dump_json(
+def dump_all(
     ctx: Dict[str, Any],
+    format_: str,
     no_accounts: bool,
     no_policies: bool,
-    format_: str,
     out_file: str,
 ) -> None:
-    """Dump a JSON representation of the organization"""
+    """Dump a data representation of the organization"""
     err_msg = None
     tb = None
     try:
@@ -114,6 +114,8 @@ def dump_json(
             s_func = odb.to_json
         elif format_ == "YAML":
             s_func = odb.to_yaml
+        elif format_ == "DOT":
+            s_func = odb.to_dot
         if out_file is None:
             out_file = "-"
         with open_file(out_file, mode="wb") as f:

pyproject.toml

@@ -48,6 +48,7 @@ mkdocs = {version = "^1.1.2", optional = true, extras = ["docs"]}
 mkdocs-git-revision-date-localized-plugin = {version = "^0.9.2", optional = true, extras = ["docs"]}
 mkdocs-macros-plugin = {version = "^0.5.5", optional = true, extras = ["docs"]}
 mkdocs-material = {version = "^7.1.5", optional = true, extras = ["docs"]}
+graphviz = "^0.16"
 
 [tool.poetry.dev-dependencies]
 black = "^21.5b1"