143 lines
4.1 KiB
Rust
143 lines
4.1 KiB
Rust
/*
|
|
* meli - plugins
|
|
*
|
|
* Copyright 2019 Manos Pitsidianakis
|
|
*
|
|
* This file is part of meli.
|
|
*
|
|
* meli is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* meli is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with meli. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
use super::*;
|
|
|
|
#[derive(Debug)]
|
|
pub struct RpcChannel {
|
|
stream: UnixStream,
|
|
session: Uuid,
|
|
}
|
|
|
|
#[derive(Debug, Serialize, Deserialize)]
|
|
#[serde(rename_all = "snake_case")]
|
|
pub struct PluginGreeting {
|
|
version: String,
|
|
}
|
|
|
|
impl RpcChannel {
|
|
pub fn new(stream: UnixStream, session: &Uuid) -> Result<RpcChannel> {
|
|
let mut ret = RpcChannel {
|
|
stream,
|
|
session: *session,
|
|
};
|
|
let greeting: PluginGreeting = ret.from_read().map_err(|err| {
|
|
Error::new(format!("Could not get correct plugin greeting: {}", err))
|
|
})?;
|
|
debug!(&greeting);
|
|
//if greeting.version != "dev" {
|
|
// return Err("Plugin is not compatible with our API (dev)".into());
|
|
//}
|
|
ret.write_ref(&rmpv::ValueRef::String(session.to_string().as_str().into()))?;
|
|
debug!(ret.expect_ack())?;
|
|
Ok(ret)
|
|
}
|
|
|
|
pub fn expect_ack(&mut self) -> Result<()> {
|
|
debug!("expect_ack()");
|
|
let ack: u32 = debug!(rmp_serde::decode::from_read(&mut self.stream))
|
|
.map_err(|_| Error::new("Plugin did not return ACK."))?;
|
|
if 0x6 == ack {
|
|
Ok(())
|
|
} else {
|
|
Err(Error::new("Plugin did not return ACK."))
|
|
}
|
|
}
|
|
|
|
pub fn ack(&mut self) -> Result<()> {
|
|
debug!("ack()");
|
|
debug!(rmpv::encode::write_value_ref(
|
|
&mut self.stream,
|
|
&rmpv::ValueRef::Integer(0x6.into())
|
|
))
|
|
.map_err(|err| Error::new(err.to_string()))?;
|
|
let _ = self.stream.flush();
|
|
Ok(())
|
|
}
|
|
|
|
pub fn write_ref(&mut self, value_ref: &rmpv::ValueRef) -> Result<()> {
|
|
debug!("write_ref() {:?}", value_ref);
|
|
debug!(rmpv::encode::write_value_ref(&mut self.stream, value_ref))
|
|
.map_err(|err| Error::new(err.to_string()))?;
|
|
let _ = self.stream.flush();
|
|
Ok(())
|
|
}
|
|
|
|
pub fn read(&mut self) -> Result<rmpv::Value> {
|
|
debug!("read()");
|
|
let ret: RpcResult = debug!(rmp_serde::decode::from_read(&mut self.stream))
|
|
.map_err(|err| Error::new(err.to_string()))?;
|
|
let _ = self.stream.flush();
|
|
self.ack()?;
|
|
debug!("read() ret={:?}", &ret);
|
|
ret.into()
|
|
}
|
|
|
|
pub fn from_read<T>(&mut self) -> Result<T>
|
|
where
|
|
T: core::fmt::Debug + serde::de::DeserializeOwned,
|
|
{
|
|
debug!("from_read()");
|
|
let ret: Result<T> = debug!(rmp_serde::decode::from_read(&mut self.stream))
|
|
.map_err(|err| Error::new(err.to_string()));
|
|
let _ = self.stream.flush();
|
|
self.ack()?;
|
|
debug!("read() ret={:?}", &ret);
|
|
ret
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Clone, Serialize, Deserialize)]
|
|
#[serde(rename_all = "snake_case")]
|
|
#[serde(tag = "t", content = "c")]
|
|
enum RpcResult {
|
|
Ok(rmpv::Value),
|
|
Err(String),
|
|
}
|
|
|
|
impl RpcResult {
|
|
fn into(self) -> Result<rmpv::Value> {
|
|
match self {
|
|
RpcResult::Ok(v) => Ok(v),
|
|
RpcResult::Err(err) => Err(Error::new(err)),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Clone, Serialize, Deserialize)]
|
|
#[serde(rename_all = "snake_case")]
|
|
#[serde(tag = "t", content = "c")]
|
|
pub enum PluginResult<T: core::fmt::Debug + Clone> {
|
|
Ok(T),
|
|
Err(String),
|
|
}
|
|
|
|
impl<T: core::fmt::Debug + Clone + serde::Serialize + serde::de::DeserializeOwned> Into<Result<T>>
|
|
for PluginResult<T>
|
|
{
|
|
fn into(self) -> Result<T> {
|
|
match self {
|
|
PluginResult::Ok(v) => Ok(v),
|
|
PluginResult::Err(err) => Err(Error::new(err)),
|
|
}
|
|
}
|
|
}
|