Merge branch 'feature-2143-api_call'

include/RaftManager.h

@@ -286,6 +286,12 @@ public:
      */
 	void delete_server(int follower_id);
 
+    /**
+     *  Reset index for a follower.
+     *    @param follower_id id of server
+     */
+	void reset_index(int follower_id);
+
 private:
     friend void * raft_manager_loop(void *arg);
 

include/RequestManagerZone.h

@@ -84,6 +84,22 @@ public:
 /* -------------------------------------------------------------------------- */
 /* -------------------------------------------------------------------------- */
 
+class ZoneResetServer : public RequestManagerZone
+{
+public:
+    ZoneResetServer():
+        RequestManagerZone("one.zone.resetserver", "Reset server log index",
+                "A:sis"){};
+
+    ~ZoneResetServer(){};
+
+    void request_execute(xmlrpc_c::paramList const& _paramList,
+                         RequestAttributes& att);
+};
+
+/* -------------------------------------------------------------------------- */
+/* -------------------------------------------------------------------------- */
+
 class ZoneReplicateLog : public RequestManagerZone
 {
 public:

src/cli/onezone

@@ -128,6 +128,18 @@ cmd=CommandParser::CmdParser.new(ARGV) do
         end
 
     end
+
+    resetserver_desc = <<-EOT.unindent
+        Reset follower log index. This should be trigger when a follower DB has
+        been reset.
+    EOT
+
+    command :"server-reset", resetserver_desc, :zoneid, :serverid do
+        helper.perform_action(args[0], options, "server reset") do |o|
+            o.reset_server(args[1].to_i)
+        end
+    end
+
     update_desc = <<-EOT.unindent
         Update the template contents. If a path is not provided the editor will
         be launched to modify the current content.

src/oca/ruby/opennebula/zone.rb

@@ -30,7 +30,8 @@ module OpenNebula
             :rename         => "zone.rename",
             :delete         => "zone.delete",
             :addserver      => "zone.addserver",
-            :delserver      => "zone.delserver"
+            :delserver      => "zone.delserver",
+            :resetserver    => "zone.resetserver"
         }
 
         # Creates a Zone description with just its identifier
@@ -168,6 +169,16 @@ module OpenNebula
             return call(ZONE_METHODS[:delserver], @pe_id, server_id)
         end
 
+        # Reset index for a follower
+        #
+        # @param id [Int] Server ID
+        #
+        # @return [nil, OpenNebula::Error] nil in case of success, Error
+        #   otherwise
+        def reset_server(server_id)
+            return call(ZONE_METHODS[:resetserver], @pe_id, server_id)
+        end
+
         private
 
         # These methods adds elements to the given node of the zone

src/raft/RaftManager.cc

@@ -313,6 +313,7 @@ void RaftManager::add_server(int follower_id, const std::string& endpoint)
     }
 
     num_servers++;
+
     servers.insert(std::make_pair(follower_id, endpoint));
 
 	next.insert(std::make_pair(follower_id, log_index + 1));
@@ -1290,4 +1291,27 @@ std::string& RaftManager::to_xml(std::string& raft_xml)
     return raft_xml;
 }
 
+/* -------------------------------------------------------------------------- */
+/* -------------------------------------------------------------------------- */
 
+void RaftManager::reset_index(int follower_id)
+{
+    std::map<int, unsigned int>::iterator next_it;
+
+	unsigned int log_index, log_term;
+
+	LogDB * logdb = Nebula::instance().get_logdb();
+
+    logdb->get_last_record_index(log_index, log_term);
+
+    pthread_mutex_lock(&mutex);
+
+    next_it = next.find(follower_id);
+
+    if ( next_it != next.end() )
+    {
+        next_it->second = log_index + 1;
+    }
+
+    pthread_mutex_unlock(&mutex);
+}

src/rm/RequestManager.cc

@@ -806,6 +806,7 @@ void RequestManager::register_xml_methods()
     xmlrpc_c::methodPtr zone_rename(zone_rename_pt);
     xmlrpc_c::methodPtr zone_addserver(new ZoneAddServer());
     xmlrpc_c::methodPtr zone_delserver(new ZoneDeleteServer());
+    xmlrpc_c::methodPtr zone_resetserver(new ZoneResetServer());
     xmlrpc_c::methodPtr zone_replicatelog(new ZoneReplicateLog());
     xmlrpc_c::methodPtr zone_voterequest(new ZoneVoteRequest());
     xmlrpc_c::methodPtr zone_raftstatus(new ZoneRaftStatus());
@@ -826,6 +827,7 @@ void RequestManager::register_xml_methods()
 
     RequestManagerRegistry.addMethod("one.zone.addserver", zone_addserver);
     RequestManagerRegistry.addMethod("one.zone.delserver", zone_delserver);
+    RequestManagerRegistry.addMethod("one.zone.resetserver", zone_resetserver);
 
     RequestManagerRegistry.addMethod("one.zonepool.info",zonepool_info);
 

src/rm/RequestManagerZone.cc

@@ -257,6 +257,38 @@ void ZoneDeleteServer::request_execute(xmlrpc_c::paramList const& paramList,
 /* -------------------------------------------------------------------------- */
 /* -------------------------------------------------------------------------- */
 
+void ZoneResetServer::request_execute(xmlrpc_c::paramList const& paramList,
+    RequestAttributes& att)
+{
+    Nebula& nd = Nebula::instance();
+
+    int id     = xmlrpc_c::value_int(paramList.getInt(1));
+    int zs_id  = xmlrpc_c::value_int(paramList.getInt(2));
+
+    string error_str;
+
+    if ( id != nd.get_zone_id() )
+    {
+        att.resp_msg = "Servers have to be deleted through the target zone"
+             " endpoints";
+        failure_response(ACTION, att);
+
+        return;
+    }
+
+    if ( basic_authorization(id, att) == false )
+    {
+        return;
+    }
+
+	nd.get_raftm()->reset_index(zs_id);
+
+    success_response(id, att);
+}
+
+/* -------------------------------------------------------------------------- */
+/* -------------------------------------------------------------------------- */
+
 void ZoneReplicateLog::request_execute(xmlrpc_c::paramList const& paramList,
     RequestAttributes& att)
 {