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// Copyright (c) 2014 Seagate Technology

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

// author: Ignacio Corderi

use std::vec;
use result::KineticResult;

/// Trait representing a Kinetic command
pub trait Command<R: Response> : Send {

    /// Build the raw kinetic proto structure for the Command
    fn build_proto(self) -> (::proto::Command, Option<vec::Vec<u8>>);

}

/// Trait representing a Kinetic response
pub trait Response : Send {

    /// Create a Response un populate it with values from the raw kinetic proto
    fn from_proto(::proto::Message, ::proto::Command, vec::Vec<u8>) -> KineticResult<Self>;

}

/// Returns the current version of the package
pub fn version() -> String {
    format!("{}", match option_env!("CFG_VERSION") {
        Some(s) => s.to_string(),
        None => format!("{}.{}.{}{}",
                        env!("CARGO_PKG_VERSION_MAJOR"),
                        env!("CARGO_PKG_VERSION_MINOR"),
                        env!("CARGO_PKG_VERSION_PATCH"),
                        option_env!("CARGO_PKG_VERSION_PRE").unwrap_or(""))
    })
}