Extend client README

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

nft_http_api_client/README.md

@@ -1 +1,14 @@
 # RESTful HTTP API for nftables - Client
+
+## Usage
+
+The token can be passed either as an argument to `NftablesRemote()` or in the environment variable `NFT-API-TOKEN`.
+
+```
+# initialize
+from nftables_api_client.client import NftablesRemote
+nft = NftablesRemote('http://localhost:9090', 'mytoken')
+
+# do things
+nft.get('/set/inet/filter/foo')
+```

nft_http_api_client/nftables_api_client/client.py

@@ -12,6 +12,10 @@ from os import getenv
 
 import urllib3
 
+default_retmap = {
+  'status': -1,
+  'data': {},
+}
 
 class NftablesRemote:
   def __init__(self, endpoint, token=None):
@@ -29,10 +33,7 @@ class NftablesRemote:
 
 
   def get(self, path):
-    retmap = {
-      'status': -1,
-      'data': {},
-    }
+    retmap = default_retmap.copy()
 
     response = urllib3.request(
       'GET',
@@ -44,3 +45,20 @@ class NftablesRemote:
     retmap['data'] = response.json()
 
     return retmap
+
+  def set_append(self, path, addresses):
+    retmap = default_retmap.copy()
+
+    response = urllib3.request(
+      'POST',
+      f'{self.endpoint}/{path}',
+      headers=self.auth_headers,
+      json={
+        'addresses': addresses,
+      },
+    )
+
+    retmap['status'] = response.status
+    retmap['data'] = response.json()
+
+    return retmap