graphql: T4413: add support for a system status query

7 files changed, 94 insertions, 1 deletions

diff --git a/src/services/api/graphql/graphql/directives.py b/src/services/api/graphql/graphql/directives.py
index 0a9298f55..551d28831 100644
--- a/src/services/api/graphql/graphql/directives.py
+++ b/src/services/api/graphql/graphql/directives.py
@@ -48,6 +48,14 @@ class ShowConfigDirective(VyosDirective):
         super().visit_field_definition(field, object_type,
                                        make_resolver=make_show_config_resolver)
 
+class SystemStatusDirective(VyosDirective):
+    """
+    Class providing implementation of 'system_status' directive in schema.
+    """
+    def visit_field_definition(self, field, object_type):
+        super().visit_field_definition(field, object_type,
+                                       make_resolver=make_system_status_resolver)
+
 class ConfigFileDirective(VyosDirective):
     """
     Class providing implementation of 'configfile' directive in schema.
@@ -74,6 +82,7 @@ class ImageDirective(VyosDirective):
 
 directives_dict = {"configure": ConfigureDirective,
                    "showconfig": ShowConfigDirective,
+                   "systemstatus": SystemStatusDirective,
                    "configfile": ConfigFileDirective,
                    "show": ShowDirective,
                    "image": ImageDirective}
diff --git a/src/services/api/graphql/graphql/queries.py b/src/services/api/graphql/graphql/queries.py
index ed94e4338..eeaa9e19c 100644
--- a/src/services/api/graphql/graphql/queries.py
+++ b/src/services/api/graphql/graphql/queries.py
@@ -94,6 +94,10 @@ def make_show_config_resolver(query_name):
     class_name = query_name
     return make_query_resolver(query_name, class_name, 'show_config')
 
+def make_system_status_resolver(query_name):
+    class_name = query_name
+    return make_query_resolver(query_name, class_name, 'system_status')
+
 def make_show_resolver(query_name):
     class_name = query_name
     return make_query_resolver(query_name, class_name, 'show')
diff --git a/src/services/api/graphql/graphql/schema/schema.graphql b/src/services/api/graphql/graphql/schema/schema.graphql
index 952e46f34..8ae71f632 100644
--- a/src/services/api/graphql/graphql/schema/schema.graphql
+++ b/src/services/api/graphql/graphql/schema/schema.graphql
@@ -7,11 +7,15 @@ directive @configure on FIELD_DEFINITION
 directive @configfile on FIELD_DEFINITION
 directive @show on FIELD_DEFINITION
 directive @showconfig on FIELD_DEFINITION
+directive @systemstatus on FIELD_DEFINITION
 directive @image on FIELD_DEFINITION
 
+scalar Generic
+
 type Query {
     Show(data: ShowInput) : ShowResult @show
     ShowConfig(data: ShowConfigInput) : ShowConfigResult @showconfig
+    SystemStatus(data: SystemStatusInput) : SystemStatusResult @systemstatus
 }
 
 type Mutation {
diff --git a/src/services/api/graphql/graphql/schema/show_config.graphql b/src/services/api/graphql/graphql/schema/show_config.graphql
index fd54036a4..5a1fe43da 100644
--- a/src/services/api/graphql/graphql/schema/show_config.graphql
+++ b/src/services/api/graphql/graphql/schema/show_config.graphql
@@ -2,7 +2,6 @@
 Use 'scalar Generic' for show config output, to avoid attempts to
 JSON-serialize in case of JSON output.
 """
-scalar Generic
 
 input ShowConfigInput {
     key: String!
diff --git a/src/services/api/graphql/graphql/schema/system_status.graphql b/src/services/api/graphql/graphql/schema/system_status.graphql
new file mode 100644
index 000000000..be8d87535
--- /dev/null
+++ b/src/services/api/graphql/graphql/schema/system_status.graphql
@@ -0,0 +1,18 @@
+"""
+Use 'scalar Generic' for system status output, to avoid attempts to
+JSON-serialize in case of JSON output.
+"""
+
+input SystemStatusInput {
+    key: String!
+}
+
+type SystemStatus {
+    result: Generic
+}
+
+type SystemStatusResult {
+    data: SystemStatus
+    success: Boolean!
+    errors: [String]
+}
diff --git a/src/services/api/graphql/recipes/queries/system_status.py b/src/services/api/graphql/recipes/queries/system_status.py
new file mode 100755
index 000000000..4a4d9871c
--- /dev/null
+++ b/src/services/api/graphql/recipes/queries/system_status.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2022 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import os
+import sys
+import json
+import importlib.util
+
+from vyos.defaults import directories
+
+OP_PATH = directories['op_mode']
+
+def load_as_module(name: str):
+    path = os.path.join(OP_PATH, name)
+    spec = importlib.util.spec_from_file_location(name, path)
+    mod = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    return mod
+
+def get_system_version() -> dict:
+    show_version = load_as_module('show_version.py')
+    return show_version.get_raw_data()
+
+def get_system_uptime() -> dict:
+    show_uptime = load_as_module('show_uptime.py')
+    return show_uptime.get_raw_data()
+
+def get_system_ram_usage() -> dict:
+    show_ram = load_as_module('show_ram.py')
+    return show_ram.get_raw_data()
diff --git a/src/services/api/graphql/recipes/session.py b/src/services/api/graphql/recipes/session.py
index 1f844ff70..c436de08a 100644
--- a/src/services/api/graphql/recipes/session.py
+++ b/src/services/api/graphql/recipes/session.py
@@ -136,3 +136,17 @@ class Session:
             raise error
 
         return res
+
+    def system_status(self):
+        import api.graphql.recipes.queries.system_status as system_status
+
+        session = self._session
+        data = self._data
+
+        status = {}
+        status['host_name'] = session.show(['host', 'name']).strip()
+        status['version'] = system_status.get_system_version()
+        status['uptime'] = system_status.get_system_uptime()
+        status['ram'] = system_status.get_system_ram_usage()
+
+        return status