management: Adding nfd::FaceEventNotification data structure
Change-Id: I5b5b8b0f86a5ccd4ed82561aaf87118400a0ba33
Refs: #1244
diff --git a/src/management/nfd-face-event-notification.hpp b/src/management/nfd-face-event-notification.hpp
new file mode 100644
index 0000000..4a299d3
--- /dev/null
+++ b/src/management/nfd-face-event-notification.hpp
@@ -0,0 +1,190 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (C) 2014 Named Data Networking Project
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NDN_MANAGEMENT_NFD_FACE_EVENT_NOTIFICATION_HPP
+#define NDN_MANAGEMENT_NFD_FACE_EVENT_NOTIFICATION_HPP
+
+#include "../encoding/encoding-buffer.hpp"
+#include "../encoding/tlv-nfd.hpp"
+
+namespace ndn {
+namespace nfd {
+
+enum FaceEventKind
+ {
+ FACE_EVENT_CREATED = 1,
+ FACE_EVENT_DESTROYED = 2
+ };
+
+class FaceEventNotification
+{
+public:
+ class Error : public Tlv::Error
+ {
+ public:
+ Error(const std::string& what) : Tlv::Error(what) { }
+ };
+
+ FaceEventNotification(const FaceEventKind eventKind,
+ const uint64_t faceId,
+ const std::string& uri);
+
+ explicit
+ FaceEventNotification(const Block& block);
+
+ uint64_t
+ getFaceId() const
+ {
+ return m_faceId;
+ }
+
+ const std::string&
+ getUri() const
+ {
+ return m_uri;
+ }
+
+ FaceEventKind
+ getEventKind() const
+ {
+ return m_kind;
+ }
+
+ template<bool T>
+ size_t
+ wireEncode(EncodingImpl<T>& buffer) const;
+
+ const Block&
+ wireEncode() const;
+
+ void
+ wireDecode(const Block& wire);
+
+private:
+ FaceEventKind m_kind;
+ uint64_t m_faceId;
+ std::string m_uri;
+
+ mutable Block m_wire;
+};
+
+inline
+FaceEventNotification::FaceEventNotification(const FaceEventKind eventKind,
+ const uint64_t faceId,
+ const std::string& uri)
+ : m_kind(eventKind)
+ , m_faceId(faceId)
+ , m_uri(uri)
+{
+}
+
+inline
+FaceEventNotification::FaceEventNotification(const Block& block)
+{
+ wireDecode(block);
+}
+
+template<bool T>
+size_t
+FaceEventNotification::wireEncode(EncodingImpl<T>& buffer) const
+{
+ size_t totalLength = 0;
+
+ totalLength += prependByteArrayBlock(buffer,
+ tlv::nfd::Uri,
+ reinterpret_cast<const uint8_t*>(m_uri.c_str()),
+ m_uri.size());
+
+ totalLength += prependNonNegativeIntegerBlock(buffer,
+ tlv::nfd::FaceId,
+ m_faceId);
+
+ totalLength += prependNonNegativeIntegerBlock(buffer,
+ tlv::nfd::FaceEventKind,
+ static_cast<uint32_t>(m_kind));
+
+ totalLength += buffer.prependVarNumber(totalLength);
+ totalLength += buffer.prependVarNumber(tlv::nfd::FaceEventNotification);
+
+ return totalLength;
+}
+
+const Block&
+FaceEventNotification::wireEncode() const
+{
+ if (m_wire.hasWire ())
+ return m_wire;
+
+ EncodingEstimator estimator;
+ size_t estimatedSize = wireEncode(estimator);
+
+ EncodingBuffer buffer(estimatedSize, 0);
+ wireEncode(buffer);
+
+ m_wire = buffer.block();
+ return m_wire;
+}
+
+inline void
+FaceEventNotification::wireDecode (const Block &wire)
+{
+ m_wire = wire;
+
+ if (m_wire.type() != tlv::nfd::FaceEventNotification)
+ throw Error("Requested decoding of FaceEventNotification, but Block is of different type");
+
+ m_wire.parse();
+
+ // FaceKind
+ Block::element_const_iterator val = m_wire.elements_begin();
+ if (val == m_wire.elements_end() || val->type() != tlv::nfd::FaceEventKind)
+ throw Error("Missing required Uri block");
+ m_kind = static_cast<FaceEventKind>(readNonNegativeInteger(*val));
+
+ // FaceID
+ ++val;
+ if (val == m_wire.elements_end() || val->type() != tlv::nfd::FaceId)
+ throw Error("Missing required FaceId block");
+ m_faceId = readNonNegativeInteger(*val);
+
+ // URI
+ ++val;
+ if (val == m_wire.elements_end() || val->type() != tlv::nfd::Uri)
+ throw Error("Missing required Uri block");
+ m_uri = std::string(reinterpret_cast<const char*>(val->value()), val->value_size());
+}
+
+inline std::ostream&
+operator << (std::ostream& os, const FaceEventNotification& event)
+{
+ os << "FaceEventNotification(";
+
+ os << "Kind: ";
+ switch (event.getEventKind())
+ {
+ case FACE_EVENT_CREATED:
+ os << "created";
+ break;
+ case FACE_EVENT_DESTROYED:
+ os << "destroyed";
+ break;
+ }
+ os << ", ";
+
+ // FaceID
+ os << "FaceID: " << event.getFaceId() << ", ";
+
+ // URI
+ os << "Uri: " << event.getUri();
+
+ os << ")";
+ return os;
+}
+
+} // namespace nfd
+} // namespace ndn
+
+#endif // NDN_MANAGEMENT_NFD_FACE_EVENT_NOTIFICATION_HPP