http-api: T2768: example using GraphQL for high-level config operations

(cherry picked from commit b168b4cc7da456f14714d917cdc7a1c6b8df9af5)

6 files changed, 89 insertions, 0 deletions

diff --git a/src/services/api/graphql/recipes/__init__.py b/src/services/api/graphql/recipes/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/src/services/api/graphql/recipes/__init__.py
diff --git a/src/services/api/graphql/recipes/dhcp_server.py b/src/services/api/graphql/recipes/dhcp_server.py
new file mode 100644
index 000000000..3edb3028e
--- /dev/null
+++ b/src/services/api/graphql/recipes/dhcp_server.py
@@ -0,0 +1,13 @@
+
+from . recipe import Recipe
+
+class DhcpServer(Recipe):
+    def __init__(self, session, command_file):
+        super().__init__(session, command_file)
+
+    # Define any custom processing of parameters here by overriding
+    # configure:
+    #
+    # def configure(self):
+    #     self.data = transform_data(self.data)
+    #     super().configure()
diff --git a/src/services/api/graphql/recipes/interface_ethernet.py b/src/services/api/graphql/recipes/interface_ethernet.py
new file mode 100644
index 000000000..f88f5924f
--- /dev/null
+++ b/src/services/api/graphql/recipes/interface_ethernet.py
@@ -0,0 +1,13 @@
+
+from . recipe import Recipe
+
+class InterfaceEthernet(Recipe):
+    def __init__(self, session, command_file):
+        super().__init__(session, command_file)
+
+    # Define any custom processing of parameters here by overriding
+    # configure:
+    #
+    # def configure(self):
+    #     self.data = transform_data(self.data)
+    #     super().configure()
diff --git a/src/services/api/graphql/recipes/recipe.py b/src/services/api/graphql/recipes/recipe.py
new file mode 100644
index 000000000..8fbb9e0bf
--- /dev/null
+++ b/src/services/api/graphql/recipes/recipe.py
@@ -0,0 +1,49 @@
+from ariadne import convert_camel_case_to_snake
+import vyos.defaults
+from vyos.template import render
+
+class Recipe(object):
+    def __init__(self, session, data):
+        self._session = session
+        self.data = data
+        self._name = convert_camel_case_to_snake(type(self).__name__)
+
+    @property
+    def data(self):
+        return self.__data
+
+    @data.setter
+    def data(self, data):
+        if isinstance(data, dict):
+            self.__data = data
+        else:
+            raise ValueError("data must be of type dict")
+
+    def configure(self):
+        session = self._session
+        data = self.data
+        func_base_name = self._name
+
+        tmpl_file = f'{func_base_name}.tmpl'
+        cmd_file = f'/tmp/{func_base_name}.cmds'
+        tmpl_dir = vyos.defaults.directories['api_templates']
+
+        try:
+            render(cmd_file, tmpl_file, data, location=tmpl_dir)
+            commands = []
+            with open(cmd_file) as f:
+                lines = f.readlines()
+            for line in lines:
+                commands.append(line.split())
+            for cmd in commands:
+                if cmd[0] == 'set':
+                    session.set(cmd[1:])
+                elif cmd[0] == 'delete':
+                    session.delete(cmd[1:])
+                else:
+                    raise ValueError('Operation must be "set" or "delete"')
+            session.commit()
+        except Exception as error:
+            raise error
+
+
diff --git a/src/services/api/graphql/recipes/templates/dhcp_server.tmpl b/src/services/api/graphql/recipes/templates/dhcp_server.tmpl
new file mode 100644
index 000000000..629ce83c1
--- /dev/null
+++ b/src/services/api/graphql/recipes/templates/dhcp_server.tmpl
@@ -0,0 +1,9 @@
+set service dhcp-server shared-network-name {{ shared_network_name }} subnet {{ subnet }} default-router {{ default_router }}
+set service dhcp-server shared-network-name {{ shared_network_name }} subnet {{ subnet }} dns-server {{ dns_server }}
+set service dhcp-server shared-network-name {{ shared_network_name }} subnet {{ subnet }} domain-name {{ domain_name }}
+set service dhcp-server shared-network-name {{ shared_network_name }} subnet {{ subnet }} lease {{ lease }}
+set service dhcp-server shared-network-name {{ shared_network_name }} subnet {{ subnet }} range {{ range }} start {{ start }}
+set service dhcp-server shared-network-name {{ shared_network_name }} subnet {{ subnet }} range {{ range }} stop {{ stop }}
+set service dns forwarding allow-from {{ dns_forwarding_allow_from }}
+set service dns forwarding cache-size {{ dns_forwarding_cache_size }}
+set service dns forwarding listen-address {{ dns_forwarding_listen_address }}
diff --git a/src/services/api/graphql/recipes/templates/interface_ethernet.tmpl b/src/services/api/graphql/recipes/templates/interface_ethernet.tmpl
new file mode 100644
index 000000000..d9d7ed691
--- /dev/null
+++ b/src/services/api/graphql/recipes/templates/interface_ethernet.tmpl
@@ -0,0 +1,5 @@
+{% if replace %}
+delete interfaces ethernet {{ interface }} address
+{% endif %}
+set interfaces ethernet {{ interface }} address {{ address }}
+set interfaces ethernet {{ interface }} description {{ description }}