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use super::*;
use crate::error::ProtocolError;
use channel_protocol::ChannelMessage;
use log::info;
use serde_cbor::{ser, ObjectKey};
use std::collections::BTreeMap;
pub fn from_cbor(message: &ChannelMessage) -> Result<Message, ProtocolError> {
let mut args: Option<Vec<String>> = None;
let command = match message.payload.get(0) {
Some(Value::String(command)) => command,
_ => {
return Err(ProtocolError::MessageParseError {
err: "No spawn command found".to_owned(),
});
}
};
if let Some(Value::Object(raw_options)) = message.payload.get(1) {
args = match raw_options.get(&ObjectKey::String("args".to_owned())) {
Some(Value::Array(args)) => Some(
args.to_vec()
.iter()
.filter_map(|s| s.as_string())
.map(|s| s.to_owned())
.collect(),
),
_ => None,
};
}
Ok(Message::Spawn {
channel_id: message.channel_id,
command: command.to_owned(),
args,
})
}
pub fn to_cbor(
channel_id: u32,
command: &str,
args: Option<&[String]>,
) -> Result<Vec<u8>, ProtocolError> {
info!("-> {{ {}, spawn, {} }}", channel_id, command);
let mut options = BTreeMap::new();
if let Some(args) = args {
let args_vec = args
.to_vec()
.iter()
.map(|s| Value::String(s.to_owned()))
.collect();
options.insert(ObjectKey::String("args".to_owned()), Value::Array(args_vec));
}
Ok(
ser::to_vec_packed(&(channel_id, "spawn", command, options)).map_err(|err| {
ProtocolError::MessageCreationError {
message: "spawn".to_owned(),
err,
}
})?,
)
}
#[cfg(test)]
mod tests {
use super::*;
use channel_protocol;
use serde_cbor::de;
#[test]
fn create_parse_spawn_message() {
let channel_id = 10;
let command = "/bin/pwd";
let raw = to_cbor(channel_id, command, None).unwrap();
let parsed = channel_protocol::parse_message(de::from_slice(&raw).unwrap()).unwrap();
let msg = parse_message(&parsed);
assert_eq!(
msg.unwrap(),
Message::Spawn {
channel_id: channel_id,
command: command.to_owned(),
args: None
}
);
}
#[test]
fn create_parse_spawn_single_arg() {
let channel_id = 10;
let command = "/bin/sleep";
let args: Vec<String> = vec!["100".to_owned()];
let raw = to_cbor(channel_id, command, Some(&args)).unwrap();
let parsed = channel_protocol::parse_message(de::from_slice(&raw).unwrap()).unwrap();
let msg = parse_message(&parsed);
assert_eq!(
msg.unwrap(),
Message::Spawn {
channel_id: channel_id,
command: command.to_owned(),
args: Some(args)
}
);
}
#[test]
fn create_parse_spawn_multi_args() {
let channel_id = 10;
let command = "/usr/bin/echo";
let args: Vec<String> = vec!["hello".to_owned(), "world".to_owned()];
let raw = to_cbor(channel_id, command, Some(&args)).unwrap();
let parsed = channel_protocol::parse_message(de::from_slice(&raw).unwrap()).unwrap();
let msg = parse_message(&parsed);
assert_eq!(
msg.unwrap(),
Message::Spawn {
channel_id: channel_id,
command: command.to_owned(),
args: Some(args)
}
);
}
}