added healthcheck endpoint

esi_leap/api/app.py

@@ -12,6 +12,7 @@
 
 from keystonemiddleware import auth_token
 from oslo_context import context
+from esi_leap.common.health import Health
 import pecan
 from pecan import hooks
 
@@ -60,6 +61,8 @@ def setup_app(config=None):
     if CONF.pecan.auth_enable:
         app = auth_token.AuthProtocol(app, dict(CONF.keystone_authtoken))
 
+    app = Health(app=app, path="/")
+
     return app
 
 

esi_leap/common/health.py

@@ -0,0 +1,31 @@
+from oslo_serialization import jsonutils
+
+
+def root(host_url):
+    return {
+        "name": "ESI Leap API",
+        "description": "ESI Leap is an OpenStack service for leasing baremetal nodes, designed to run on top of multi-tenant Ironic.",
+        "versions": [
+            {
+                "id": "v1.0",
+                "status": "CURRENT",
+                "links": [{"href": "{0}/v1".format(host_url), "rel": "self"}],
+            }
+        ],
+    }
+
+
+class Health(object):
+    def __init__(self, app, path):
+        self.app = app
+        self.path = path
+
+    def __call__(self, environ, start_response):
+        if environ["PATH_INFO"] == self.path:
+            start_response("200 OK", [("Content-Type", "application/json")])
+            return [
+                jsonutils.dump_as_bytes(
+                    root(environ["wsgi.url_scheme"] + "://" + environ["HTTP_HOST"])
+                )
+            ]
+        return self.app(environ, start_response)