--- /dev/null
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __VOM_ACL_BINDING_H__
+#define __VOM_ACL_BINDING_H__
+
+#include <ostream>
+
+#include "vom/acl_l2_list.hpp"
+#include "vom/acl_l3_list.hpp"
+#include "vom/acl_types.hpp"
+#include "vom/hw.hpp"
+#include "vom/inspect.hpp"
+#include "vom/interface.hpp"
+#include "vom/object_base.hpp"
+#include "vom/om.hpp"
+#include "vom/singular_db.hpp"
+#include "vom/singular_db_funcs.hpp"
+
+namespace VOM {
+namespace ACL {
+/**
+ * A binding between an ACL and an interface.
+ * A representation of the application of the ACL to the interface.
+ */
+template <typename LIST>
+class binding : public object_base
+{
+public:
+ /**
+ * The key for a binding is the direction and the interface
+ */
+ typedef std::pair<direction_t, interface::key_t> key_t;
+
+ /**
+ * Construct a new object matching the desried state
+ */
+ binding(const direction_t& direction, const interface& itf, const LIST& acl)
+ : m_direction(direction)
+ , m_itf(itf.singular())
+ , m_acl(acl.singular())
+ , m_binding(false)
+ {
+ m_evh.order();
+ }
+
+ /**
+ * Copy Constructor
+ */
+ binding(const binding& o)
+ : m_direction(o.m_direction)
+ , m_itf(o.m_itf)
+ , m_acl(o.m_acl)
+ , m_binding(o.m_binding)
+ {
+ }
+
+ /**
+ * Destructor
+ */
+ ~binding()
+ {
+ sweep();
+ m_db.release(std::make_pair(m_direction, m_itf->key()), this);
+ }
+
+ /**
+ * Return the 'singular instance' of the L2 config that matches this
+ * object
+ */
+ std::shared_ptr<binding> singular() const { return find_or_add(*this); }
+
+ /**
+ * convert to string format for debug purposes
+ */
+ std::string to_string() const
+ {
+ std::ostringstream s;
+ s << "acl-binding:[" << m_direction.to_string() << " " << m_itf->to_string()
+ << " " << m_acl->to_string() << " " << m_binding.to_string() << "]";
+
+ return (s.str());
+ }
+
+ /**
+ * Dump all bindings into the stream provided
+ */
+ static void dump(std::ostream& os) { m_db.dump(os); }
+
+ static dependency_t order() { return m_evh.order(); }
+
+private:
+ /**
+ * Class definition for listeners to OM events
+ */
+ class event_handler : public OM::listener, public inspect::command_handler
+ {
+ public:
+ event_handler();
+
+ virtual ~event_handler() = default;
+
+ /**
+ * Handle a populate event
+ */
+ void handle_populate(const client_db::key_t& key);
+
+ /**
+ * Handle a replay event
+ */
+ void handle_replay() { m_db.replay(); }
+
+ /**
+ * Show the object in the Singular DB
+ */
+ void show(std::ostream& os) { db_dump(m_db, os); }
+
+ /**
+ * Get the sortable Id of the listener
+ */
+ dependency_t order() const;
+ };
+
+ /**
+ * event_handler to register with OM
+ */
+ static event_handler m_evh;
+
+ /**
+ * Enquue commonds to the VPP command Q for the update
+ */
+ void update(const binding& obj);
+
+ /**
+ * Find or Add the instance in the DB
+ */
+ static std::shared_ptr<binding> find_or_add(const binding& temp)
+ {
+ return (m_db.find_or_add(
+ std::make_pair(temp.m_direction, temp.m_itf->key()), temp));
+ }
+
+ /*
+ * It's the OM class that calls singular()
+ */
+ friend class VOM::OM;
+
+ /**
+ * It's the singular_db class that calls replay()
+ */
+ friend class singular_db<key_t, binding>;
+
+ /**
+ * Sweep/reap the object if still stale
+ */
+ void sweep(void);
+
+ /**
+ * Replay the objects state to HW
+ */
+ void replay(void);
+
+ /**
+ * The direction the of the packets on which to apply the ACL
+ * input or output
+ */
+ const direction_t m_direction;
+
+ /**
+ * A reference counting pointer the interface that this L3 layer
+ * represents. By holding the reference here, we can guarantee that
+ * this object will outlive the interface
+ */
+ const std::shared_ptr<interface> m_itf;
+
+ /**
+ * A reference counting pointer the ACL that this
+ * interface is bound to. By holding the reference here, we can
+ * guarantee that this object will outlive the BD.
+ */
+ const std::shared_ptr<LIST> m_acl;
+
+ /**
+ * HW configuration for the binding. The bool representing the
+ * do/don't bind.
+ */
+ HW::item<bool> m_binding;
+
+ /**
+ * A map of all L2 interfaces key against the interface's handle_t
+ */
+ static singular_db<key_t, binding> m_db;
+};
+
+/**
+ * Typedef the L3 binding type
+ */
+typedef binding<l3_list> l3_binding;
+
+/**
+ * Typedef the L2 binding type
+ */
+typedef binding<l2_list> l2_binding;
+
+/**
+ * Definition of the static Singular DB for ACL bindings
+ */
+template <typename LIST>
+singular_db<typename ACL::binding<LIST>::key_t, ACL::binding<LIST>>
+ binding<LIST>::m_db;
+
+template <typename LIST>
+typename ACL::binding<LIST>::event_handler binding<LIST>::m_evh;
+
+namespace {
+const static dependency_t __attribute__((unused)) l2o = l2_binding::order();
+const static dependency_t __attribute__((unused)) l3o = l3_binding::order();
+};
+};
+
+std::ostream& operator<<(std::ostream& os,
+ const std::pair<direction_t, interface::key_t>& key);
+};
+
+/*
+ * fd.io coding-style-patch-verification: OFF
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */
+
+#endif
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