1 files changed, 126 insertions, 0 deletions
diff --git a/src/include/VppInspect.hpp b/src/include/VppInspect.hpp
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+/* -*- C++ -*-; c-basic-offset: 4; indent-tabs-mode: nil */
+/*
+ * Copyright (c) 2017 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+#pragma once
+#ifndef VPP_INSPECT_H
+#define VPP_INSPECT_H
+
+#include <map>
+#include <sstream>
+#include <string>
+#include <uv.h>
+#include <vector>
+
+#include "vom/inspect.hpp"
+
+namespace opflexagent
+{
+/**
+ * A means to inspect the state VPP has built, in total, and per-client
+ * To use do:
+ *   socat - UNIX-CONNECT:/path/to/sock/in/opflex.conf
+ * and follow the instructions
+ */
+class VppInspect
+{
+  public:
+    /**
+     * Constructor
+     */
+    VppInspect(const std::string &sockname);
+
+    /**
+     * Destructor to tidyup socket resources
+     */
+    ~VppInspect();
+
+  private:
+    /**
+     * Call operator for running in the thread
+     */
+    static void run(void *ctx);
+
+    /**
+     * A write request
+     */
+    struct write_req_t
+    {
+        write_req_t(std::ostringstream &output);
+        ~write_req_t();
+
+        uv_write_t req;
+        uv_buf_t buf;
+    };
+
+    /**
+     * Write a ostream to the client
+     */
+    static void do_write(uv_stream_t *client, std::ostringstream &output);
+
+    /**
+     * Called on creation of a new connection
+     */
+    static void on_connection(uv_stream_t *server, int status);
+
+    /**
+     * Call when data is written
+     */
+    static void on_write(uv_write_t *req, int status);
+
+    /**
+     * Called when data is read
+     */
+    static void
+    on_read(uv_stream_t *client, ssize_t nread, const uv_buf_t *buf);
+
+    /**
+     * Called to allocate buffer space for data to be read
+     */
+    static void
+    on_alloc_buffer(uv_handle_t *handle, size_t size, uv_buf_t *buf);
+
+    /**
+     * Called to cleanup the thread and socket during destruction
+     */
+    static void on_cleanup(uv_async_t *handle);
+
+    /**
+     * Async handle so we can wakeup the loop
+     */
+    uv_async_t mAsync;
+
+    /**
+     * The libuv loop
+     */
+    uv_loop_t mServerLoop;
+
+    /**
+     * The libuv thread context in which we run the loop
+     */
+    uv_thread_t mServerThread;
+
+    /**
+     * The inspect unix domain socket name, from the config file
+     */
+    std::string mSockName;
+
+    /**
+     * VPP inspect object to handle data read from the socket
+     */
+    VOM::inspect mInspect;
+};
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "llvm.org")
+ * End:
+ */
+
+#endif