forked from M-Labs/artiq
79 lines
2.1 KiB
Rust
79 lines
2.1 KiB
Rust
use std::vec::Vec;
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use std::io::{self, Read, Write};
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use {ReadExt, WriteExt};
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#[cfg(feature = "log")]
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use log::LogLevelFilter;
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#[derive(Debug)]
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pub enum Request {
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GetLog,
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ClearLog,
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PullLog,
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#[cfg(feature = "log")]
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SetLogFilter(LogLevelFilter),
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#[cfg(feature = "log")]
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SetUartLogFilter(LogLevelFilter),
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Hotswap(Vec<u8>),
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Reboot,
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}
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pub enum Reply<'a> {
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Success,
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LogContent(&'a str),
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RebootImminent,
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}
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impl Request {
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pub fn read_from(reader: &mut Read) -> io::Result<Request> {
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#[cfg(feature = "log")]
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fn read_log_level_filter(reader: &mut Read) -> io::Result<LogLevelFilter> {
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Ok(match reader.read_u8()? {
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0 => LogLevelFilter::Off,
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1 => LogLevelFilter::Error,
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2 => LogLevelFilter::Warn,
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3 => LogLevelFilter::Info,
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4 => LogLevelFilter::Debug,
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5 => LogLevelFilter::Trace,
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_ => return Err(io::Error::new(io::ErrorKind::InvalidData,
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"invalid log level"))
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})
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}
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Ok(match reader.read_u8()? {
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1 => Request::GetLog,
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2 => Request::ClearLog,
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7 => Request::PullLog,
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#[cfg(feature = "log")]
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3 => Request::SetLogFilter(read_log_level_filter(reader)?),
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#[cfg(feature = "log")]
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6 => Request::SetUartLogFilter(read_log_level_filter(reader)?),
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4 => Request::Hotswap(reader.read_bytes()?),
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5 => Request::Reboot,
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_ => return Err(io::Error::new(io::ErrorKind::InvalidData, "unknown request type"))
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})
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}
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}
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impl<'a> Reply<'a> {
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pub fn write_to(&self, writer: &mut Write) -> io::Result<()> {
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match *self {
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Reply::Success => {
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writer.write_u8(1)?;
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},
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Reply::LogContent(ref log) => {
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writer.write_u8(2)?;
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writer.write_string(log)?;
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},
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Reply::RebootImminent => {
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writer.write_u8(3)?;
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},
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}
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Ok(())
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}
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}
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