feat: add User-Agent request header

Author: bednar

CHANGELOG.md

@@ -1,5 +1,8 @@
 ## 1.5.0 [unreleased]
 
+### Features
+1. [#59](https://github.com/influxdata/influxdb-client-python/issues/59): Set User-Agent to influxdb-client-python/VERSION for all requests
+
 ## 1.4.0 [2020-02-14]
 
 ### Features

influxdb_client/api_client.py

@@ -75,7 +75,7 @@ def __init__(self, configuration=None, header_name=None, header_value=None,
             self.default_headers[header_name] = header_value
         self.cookie = cookie
         # Set default User-Agent.
-        self.user_agent = 'OpenAPI-Generator/1.5.0dev/python'
+        self.user_agent = 'influxdb-client-python/1.5.0dev'
 
     def __del__(self):
         if self._pool:

openapi-generator/src/main/resources/python/api_client.mustache

@@ -70,7 +70,7 @@ class ApiClient(object):
             self.default_headers[header_name] = header_value
         self.cookie = cookie
         # Set default User-Agent.
-        self.user_agent = '{{#httpUserAgent}}{{{.}}}{{/httpUserAgent}}{{^httpUserAgent}}OpenAPI-Generator/{{{packageVersion}}}/python{{/httpUserAgent}}'
+        self.user_agent = 'influxdb-client-python/{{{packageVersion}}}'
 
     def __del__(self):
         if self._pool:

tests/test_WriteApiBatching.py

@@ -365,6 +365,19 @@ def test_default_tags(self):
         self.assertNotEqual(-1, request.find('customer=California\\\\ Miner'))
         self.assertNotEqual(-1, request.find('id=132-987-655'))
 
+    def test_user_agent_header(self):
+        httpretty.register_uri(httpretty.POST, uri="http://localhost/api/v2/write", status=204)
+
+        self._write_client.write("my-bucket", "my-org",
+                                 ["h2o_feet,location=coyote_creek level\\ water_level=1.0 1",
+                                  "h2o_feet,location=coyote_creek level\\ water_level=2.0 2"])
+
+        time.sleep(1)
+
+        requests = httpretty.httpretty.latest_requests
+        self.assertEqual(1, len(requests))
+        self.assertEqual(f'influxdb-client-python/{influxdb_client.__version__}', requests[0].headers['User-Agent'])
+
 
 if __name__ == '__main__':
     unittest.main()