VPP Object Model (VOM)

The VOM is a C++ library for use by clients/agents of VPP for programming
state. It uses the binary APIs to do so. Various other common client side
functions are also provided. Please see om.hpp for a more detailed description.

Change-Id: Ib756bfe99817093815a9e26ccf464aa5583fc523
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Co-authored-by: Mohsin Kazmi <sykazmi@cisco.com>

1 files changed, 167 insertions, 0 deletions

diff --git a/src/vpp-api/vom/dhcp_config.cpp b/src/vpp-api/vom/dhcp_config.cpp
new file mode 100644
index 00000000000..bf9b036b919
--- /dev/null
+++ b/src/vpp-api/vom/dhcp_config.cpp
@@ -0,0 +1,167 @@
+/*
+ * 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.
+ */
+
+#include "vom/dhcp_config.hpp"
+#include "vom/cmd.hpp"
+
+namespace VOM {
+/**
+ * A DB of all DHCP configs
+ */
+singular_db<interface::key_type, dhcp_config> dhcp_config::m_db;
+
+dhcp_config::event_handler dhcp_config::m_evh;
+
+dhcp_config::dhcp_config(const interface& itf, const std::string& hostname)
+  : m_itf(itf.singular())
+  , m_hostname(hostname)
+  , m_client_id(l2_address_t::ZERO)
+  , m_binding(0)
+{
+}
+
+dhcp_config::dhcp_config(const interface& itf,
+                         const std::string& hostname,
+                         const l2_address_t& client_id)
+  : m_itf(itf.singular())
+  , m_hostname(hostname)
+  , m_client_id(client_id)
+  , m_binding(0)
+{
+}
+
+dhcp_config::dhcp_config(const dhcp_config& o)
+  : m_itf(o.m_itf)
+  , m_hostname(o.m_hostname)
+  , m_client_id(o.m_client_id)
+  , m_binding(0)
+{
+}
+
+dhcp_config::~dhcp_config()
+{
+  sweep();
+
+  // not in the DB anymore.
+  m_db.release(m_itf->key(), this);
+}
+
+void
+dhcp_config::sweep()
+{
+  if (m_binding) {
+    HW::enqueue(new unbind_cmd(m_binding, m_itf->handle(), m_hostname));
+  }
+  HW::write();
+}
+
+void
+dhcp_config::dump(std::ostream& os)
+{
+  m_db.dump(os);
+}
+
+void
+dhcp_config::replay()
+{
+  if (m_binding) {
+    HW::enqueue(
+      new bind_cmd(m_binding, m_itf->handle(), m_hostname, m_client_id));
+  }
+}
+
+std::string
+dhcp_config::to_string() const
+{
+  std::ostringstream s;
+  s << "Dhcp-config: " << m_itf->to_string() << " hostname:" << m_hostname
+    << " client_id:[" << m_client_id << "] " << m_binding.to_string();
+
+  return (s.str());
+}
+
+void
+dhcp_config::update(const dhcp_config& desired)
+{
+  /*
+ * the desired state is always that the interface should be created
+ */
+  if (!m_binding) {
+    HW::enqueue(
+      new bind_cmd(m_binding, m_itf->handle(), m_hostname, m_client_id));
+  }
+}
+
+std::shared_ptr<dhcp_config>
+dhcp_config::find_or_add(const dhcp_config& temp)
+{
+  return (m_db.find_or_add(temp.m_itf->key(), temp));
+}
+
+std::shared_ptr<dhcp_config>
+dhcp_config::singular() const
+{
+  return find_or_add(*this);
+}
+
+dhcp_config::event_listener::event_listener()
+  : m_status(rc_t::NOOP)
+{
+}
+
+HW::item<bool>&
+dhcp_config::event_listener::status()
+{
+  return (m_status);
+}
+
+dhcp_config::event_handler::event_handler()
+{
+  OM::register_listener(this);
+  inspect::register_handler({ "dhcp" }, "DHCP configurations", this);
+}
+
+void
+dhcp_config::event_handler::handle_replay()
+{
+  m_db.replay();
+}
+
+void
+dhcp_config::event_handler::handle_populate(const client_db::key_t& key)
+{
+  // FIXME
+}
+
+dependency_t
+dhcp_config::event_handler::order() const
+{
+  return (dependency_t::BINDING);
+}
+
+void
+dhcp_config::event_handler::show(std::ostream& os)
+{
+  m_db.dump(os);
+}
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */