Add a RequestContext.from_dict method

This adds a new methods allowing the creation of a RequestContext from a
dict, useful when passing it serialized.

Change-Id: Id66aba0c600896521a4a236e0a97859735419357

2 files changed, 43 insertions, 0 deletions

diff --git a/openstack/common/context.py b/openstack/common/context.py
index 3eeb445..b612db7 100644
--- a/openstack/common/context.py
+++ b/openstack/common/context.py
@@ -77,6 +77,21 @@ class RequestContext(object):
                 'instance_uuid': self.instance_uuid,
                 'user_identity': user_idt}
 
+    @classmethod
+    def from_dict(cls, ctx):
+        return cls(
+            auth_token=ctx.get("auth_token"),
+            user=ctx.get("user"),
+            tenant=ctx.get("tenant"),
+            domain=ctx.get("domain"),
+            user_domain=ctx.get("user_domain"),
+            project_domain=ctx.get("project_domain"),
+            is_admin=ctx.get("is_admin", False),
+            read_only=ctx.get("read_only", False),
+            show_deleted=ctx.get("show_deleted", False),
+            request_id=ctx.get("request_id"),
+            instance_uuid=ctx.get("instance_uuid"))
+
 
 def get_admin_context(show_deleted=False):
     context = RequestContext(None,
diff --git a/tests/unit/test_context.py b/tests/unit/test_context.py
index 9fedff7..a1cb05d 100644
--- a/tests/unit/test_context.py
+++ b/tests/unit/test_context.py
@@ -27,3 +27,31 @@ class ContextTest(test_base.BaseTestCase):
     def test_admin_context_show_deleted_flag_default(self):
         ctx = context.get_admin_context()
         self.assertFalse(ctx.show_deleted)
+
+    def test_from_dict(self):
+        dct = {
+            "auth_token": "token1",
+            "user": "user1",
+            "tenant": "tenant1",
+            "domain": "domain1",
+            "user_domain": "user_domain1",
+            "project_domain": "project_domain1",
+            "is_admin": True,
+            "read_only": True,
+            "show_deleted": True,
+            "request_id": "request1",
+            "instance_uuid": "instance1",
+            "extra_data": "foo"
+        }
+        ctx = context.RequestContext.from_dict(dct)
+        self.assertEqual("token1", ctx.auth_token)
+        self.assertEqual("user1", ctx.user)
+        self.assertEqual("tenant1", ctx.tenant)
+        self.assertEqual("domain1", ctx.domain)
+        self.assertEqual("user_domain1", ctx.user_domain)
+        self.assertEqual("project_domain1", ctx.project_domain)
+        self.assertTrue(ctx.is_admin)
+        self.assertTrue(ctx.read_only)
+        self.assertTrue(ctx.show_deleted)
+        self.assertEqual("request1", ctx.request_id)
+        self.assertEqual("instance1", ctx.instance_uuid)