rgw: handle deep uri resources

In case of deep uri resources (ones created beyond a single level
of hierarchy, e.g. auth/v1.0) we want to create a new empty
handlers for the path if no handlers exists. E.g., for
auth/v1.0 we need to have a handler for 'auth', otherwise
the default S3 handler will be used, which we don't want.

Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
(cherry picked from commit ad3934e335399f7844e45fcfd17f7802800d2cb3)

1 files changed, 25 insertions, 0 deletions

diff --git a/src/rgw/rgw_rest.cc b/src/rgw/rgw_rest.cc
index 64f9e150b64..8bbf82f0cf9 100644
--- a/src/rgw/rgw_rest.cc
+++ b/src/rgw/rgw_rest.cc
@@ -1163,8 +1163,33 @@ void RGWRESTMgr::register_resource(string resource, RGWRESTMgr *mgr)
 {
   string r = "/";
   r.append(resource);
+
+  /* do we have a resource manager registered for this entry point? */
+  map<string, RGWRESTMgr *>::iterator iter = resource_mgrs.find(r);
+  if (iter != resource_mgrs.end()) {
+    delete iter->second;
+  }
   resource_mgrs[r] = mgr;
   resources_by_size.insert(pair<size_t, string>(r.size(), r));
+
+  /* now build default resource managers for the path (instead of nested entry points)
+   * e.g., if the entry point is /auth/v1.0/ then we'd want to create a default
+   * manager for /auth/
+   */
+
+  size_t pos = r.find('/', 1);
+
+  while (pos != r.size() - 1 && pos != string::npos) {
+    string s = r.substr(0, pos);
+
+    iter = resource_mgrs.find(s);
+    if (iter == resource_mgrs.end()) { /* only register it if one does not exist */
+      resource_mgrs[s] = new RGWRESTMgr; /* a default do-nothing manager */
+      resources_by_size.insert(pair<size_t, string>(s.size(), s));
+    }
+
+    pos = r.find('/', pos + 1);
+  }
 }
 
 void RGWRESTMgr::register_default_mgr(RGWRESTMgr *mgr)