status: add host info

framework/internal/compose.py

@@ -66,3 +66,15 @@ def restart(service: str):
     cmd = ['docker', 'compose', 'restart', service]
     subprocess.call(cmd, stdout=subprocess.PIPE, timeout=300)
     print(f"Restarted service {service}")
+
+def info() -> dict:
+    """
+    Get information about host and docker
+    """
+    cmd = ['docker', 'info', '-f', 'json']
+    result = subprocess.run(cmd, stdout=subprocess.PIPE, timeout=5)
+
+    try:
+        return json.loads(result.stdout)
+    except json.decoder.JSONDecodeError:
+        return {}

framework/status-json.py

@@ -12,12 +12,24 @@
 import internal.conf as conf
 
 def get_timestamp():
+    print('Getting timestamp', file=sys.stderr)
     return int(time.time())
 
 def get_revision():
+    print('Getting git revision', file=sys.stderr)
     cmd = ['git', 'describe', '--dirty', '--always']
     return subprocess.check_output(cmd, timeout=5).decode('utf-8').strip()
 
+def get_host_info():
+    print('Getting host info', file=sys.stderr)
+    info = compose.info()
+    return {
+        'kernel': info.get('KernelVersion', 'N/A'),
+        'os': info.get('OperatingSystem', 'N/A'),
+        'arch': info.get('Architecture', 'N/A'),
+        'docker_version': info.get('ServerVersion', 'N/A'),
+    }
+
 def get_services():
     services = {}
     for service in compose.config().get('services', {}):
@@ -88,6 +100,7 @@ def get_ndnping():
     status = {
         'timestamp': run_safe(get_timestamp),
         'revision': run_safe(get_revision),
+        'host_info': run_safe(get_host_info),
         'services': run_safe(get_services),
         'nfd': run_safe(get_nfd),
         'nlsr': run_safe(get_nlsr),