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+/*
+ * 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_DUMP_CMD_H__
+#define __VOM_DUMP_CMD_H__
+
+#include <future>
+
+#include "vom/cmd.hpp"
+#include "vom/hw.hpp"
+
+#include <vapi/vapi.hpp>
+
+namespace VOM {
+/**
+ * A function type def for calculating a message's size
+ */
+typedef unsigned int (*get_msg_size_t)(void*);
+
+/**
+ * A base class for VPP dump commands.
+ * Dump commands are one of the sub-set of command types to VPP. Here the
+ * client
+ * makes a read request on the resource and VPP responds with all the
+ * records.
+ * This command is executed synchronously. Once complete the client can
+ * 'pop'
+ * the records from the command object
+ */
+template <typename MSG>
+class dump_cmd : public cmd
+{
+public:
+ typedef MSG msg_t;
+ typedef typename MSG::resp_type record_t;
+
+ typedef typename vapi::Result_set<typename MSG::resp_type>::const_iterator
+ const_iterator;
+
+ /**
+ * Default Constructor
+ */
+ dump_cmd()
+ : cmd()
+ {
+ }
+
+ /**
+ * Destructor
+ */
+ virtual ~dump_cmd() {}
+
+ const_iterator begin() { return (m_dump->get_result_set().begin()); }
+
+ const_iterator end() { return (m_dump->get_result_set().end()); }
+
+ /**
+ * Wait for the issue of the command to complete
+ */
+ rc_t wait()
+ {
+ std::future_status status;
+ std::future<rc_t> result;
+
+ result = m_promise.get_future();
+ status = result.wait_for(std::chrono::seconds(5));
+
+ if (status != std::future_status::ready) {
+ return (rc_t::TIMEOUT);
+ }
+
+ return (result.get());
+ }
+
+ /**
+ * Call operator called when the dump is complete
+ */
+ vapi_error_e operator()(MSG& d)
+ {
+ m_promise.set_value(rc_t::OK);
+
+ return (VAPI_OK);
+ }
+
+ /**
+ * Retire/cancel a long running command
+ */
+ virtual void retire(connection& con) {}
+
+protected:
+ /**
+ * The underlying promise that implements the synchornous nature
+ * of the command issue
+ */
+ std::promise<rc_t> m_promise;
+
+ /**
+ * Dump commands should not be issued whilst the HW is disabled
+ */
+ void succeeded() {}
+
+ /**
+ * The HW::cmd_q is a friend so it can call suceedded.
+ */
+ friend class HW::cmd_q;
+
+ /**
+ * The VAPI event registration
+ */
+ std::unique_ptr<MSG> m_dump;
+};
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */
+
+#endif