Azure 管理グループをツリー形式で表示するシェルスクリプトを作ってみた

00000000-0000-0000-0000-000000000000 (Root)
└── mg-intermediate-root (IntermediateRoot)
    ├── mg-sandbox (Sandbox)
    ├── mg-security (Security)
    │   ├── mg-log-archive (LogArchive)
    │   └── mg-security-tools (SecurityTools)
    └── mg-workloads (Workloads)
        ├── mg-workloads-external (WorkloadsExternal)
        └── mg-workloads-internal (WorkloadsInternal)

#!/bin/bash

# 管理グループの情報を取得
management_group_names=$(az account management-group list --query "[].name" -o tsv)
management_groups_json=$(echo "$management_group_names" | while read -r mg_name; do
  az account management-group show --name "$mg_name" \
    --query "{displayName: displayName, name: name, parent: details.parent.name}" -o json
done | jq -s '.')

# ルート管理グループを特定
root_group_name=$(echo "$management_groups_json" | jq -r '.[] | select(.parent == null) | .name')
root_group_display_name=$(echo "$management_groups_json" | jq -r '.[] | select(.parent == null) | .displayName')

# 再帰的にツリー形式で出力する関数
print_tree() {
  local parent_name=$1
  local indent=$2

  # 子の管理グループを取得
  local children=$(echo "$management_groups_json" | jq -r --arg parent "$parent_name" '.[] | select(.parent == $parent) | "\(.name)|\(.displayName)"')

  # 子が存在しない場合は終了
  if [ -z "$children" ]; then
    return
  fi

  # 子の管理グループ数をカウント
  local child_count=$(echo "$children" | grep -c '^')

  # 各子を順番に処理
  local index=0
  while IFS='|' read child_name child_display_name; do
    index=$((index + 1))

    # 最後の子かどうかを判定
    local is_last_child=false
    if [ $index -eq $child_count ]; then
      is_last_child=true
    fi

    # ツリー表記の記号を決定して出力
    if $is_last_child; then
      echo "${indent}└── $child_name ($child_display_name)"
      local new_indent="${indent}    "
    else
      echo "${indent}├── $child_name ($child_display_name)"
      local new_indent="${indent}│   "
    fi

    # 再帰呼び出し
    print_tree "$child_name" "$new_indent"
  done <<< "$children"
}

echo "$root_group_name ($root_group_display_name)"
print_tree "$root_group_name" ""

[
    {
        "displayName": "Root",
        "name": "00000000-0000-0000-0000-000000000000",
        "parent": null
    },
    {
        "displayName": "IntermediateRoot",
        "name": "mg-intermediate-root",
        "parent": "00000000-0000-0000-0000-000000000000"
    },
    {
        "displayName": "LogArchive",
        "name": "mg-log-archive",
        "parent": "mg-security"
    },
    {
        "displayName": "Sandbox",
        "name": "mg-sandbox",
        "parent": "mg-intermediate-root"
    },
    {
        "displayName": "Security",
        "name": "mg-security",
        "parent": "mg-intermediate-root"
    },
    {
        "displayName": "SecurityTools",
        "name": "mg-security-tools",
        "parent": "mg-security"
    },
    {
        "displayName": "Workloads",
        "name": "mg-workloads",
        "parent": "mg-intermediate-root"
    },
    {
        "displayName": "WorkloadsExternal",
        "name": "mg-workloads-external",
        "parent": "mg-workloads"
    },
    {
        "displayName": "WorkloadsInternal",
        "name": "mg-workloads-internal",
        "parent": "mg-workloads"
    }
]

    {
        "displayName": "Root",
        "name": "00000000-0000-0000-0000-000000000000",
        "parent": null
    },