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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+Architecture
+==============
+
+
+Capabilities
+---------
+Bus Controller is a RESTful web service used to provision DMaaP topics (on Message Router) and feeds (on Data Router), with associated authorization (on AAF).
+
+Usage Scenarios
+---------------
+Bus Controller endpoints are used to provision:
+- a authorized topic on MR, and to create and grant permission for publishers and subscribers.
+- a feed on DR, with associated user authenticatio n.
+
+.. blockdiag::
+
+ blockdiag layers {
+ orientation = portrait
+ DBC_CLIENT -> DBC_API;
+ DBC_API -> MR;
+ DBC_API -> DR;
+ DBC_API -> AAF;
+ group l1 {
+ color = blue;
+ label = "Bus Controller Container";
+ DBC_API;
+ }
+ group l2 {
+ color = yellow;
+ label = "MR";
+ MR;
+ }
+ group l3 {
+ color = orange;
+ label = "DR";
+ DR;
+ }
+ group l4 {
+ color = green;
+ label = "AAF";
+ AAF;
+ }
+ }
+
+