Add preliminary support for input stream statistics.

[cubemap] / input.h

diff --git a/input.h b/input.h
index 76e1b662bbc643db48ecd094dbc2386934bd82e2..f13975524ebf3fb5f7cd11fbfc4595cf35839554 100644 (file)
--- a/input.h
+++ b/input.h
@@ -16,6 +16,26 @@ bool parse_url(const std::string &url, std::string *protocol, std::string *host,
 Input *create_input(const std::string &url);
 Input *create_input(const InputProto &serialized);
 
+// Digested statistics for writing to logs etc.
+struct InputStats {
+       std::string url;
+
+       // The number of bytes we have received so far, including any Metacube headers.
+       //
+       // Not reset across connections.
+       size_t bytes_received;
+
+       // The number of data bytes we have received so far (or more precisely,
+       // number of data bytes we have sent on to the stream). This excludes Metacube
+       // headers and corrupted data we've skipped.
+       //
+       // Not reset across connections.
+       size_t data_bytes_received;
+
+       // TODO: Number of loss events and connection time might both be useful,
+       // similar to for clients. Also, per-connection byte counters.
+};
+
 class Input : public Thread {
 public:
        virtual ~Input();
@@ -23,6 +43,9 @@ public:
        virtual std::string get_url() const = 0;
        virtual void close_socket() = 0;
        virtual void add_destination(int stream_index) = 0;
+
+       // Note: May be called from a different thread, so must be thread-safe.
+       virtual InputStats get_stats() const = 0;
 };
 
 #endif  // !defined(_INPUT_H)