Add user agent to API calls

Signed-off-by: Ben Firshman <ben@firshman.co.uk>

compose/cli/docker_client.py

@@ -10,6 +10,7 @@ from docker.utils import kwargs_from_env
 
 from ..const import HTTP_TIMEOUT
 from .errors import UserError
+from .utils import generate_user_agent
 
 log = logging.getLogger(__name__)
 
@@ -67,4 +68,6 @@ def docker_client(environment, version=None, tls_config=None, host=None,
     else:
         kwargs['timeout'] = HTTP_TIMEOUT
 
+    kwargs['user_agent'] = generate_user_agent()
+
     return Client(**kwargs)

compose/cli/utils.py

@@ -107,3 +107,18 @@ def get_build_version():
 
 def is_docker_for_mac_installed():
     return is_mac() and os.path.isdir('/Applications/Docker.app')
+
+
+def generate_user_agent():
+    parts = [
+        "docker-compose/{}".format(compose.__version__),
+        "docker-py/{}".format(docker.__version__),
+    ]
+    try:
+        p_system = platform.system()
+        p_release = platform.release()
+    except IOError:
+        pass
+    else:
+        parts.append("{}/{}".format(p_system, p_release))
+    return " ".join(parts)