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refactor: migrate data collection and some others away from BottomError (#1497)

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Clement Tsang 2024-07-22 00:52:38 -04:00 committed by GitHub
parent c56e28328e
commit 0401f527e5
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13 changed files with 132 additions and 122 deletions
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3
src/canvas.rs
View file

@ -23,7 +23,6 @@ use crate::{
},
constants::*,
options::OptionError,
utils::error,
};
#[derive(Debug)]
@ -205,7 +204,7 @@ impl Painter {
pub fn draw_data<B: Backend>(
&mut self, terminal: &mut Terminal<B>, app_state: &mut App,
) -> error::Result<()> {
) -> Result<(), std::io::Error> {
use BottomWidgetType::*;
terminal.draw(|f| {

3
src/data_collection.rs
View file

@ -8,6 +8,7 @@ pub mod batteries;
pub mod cpu;
pub mod disks;
pub mod error;
pub mod memory;
pub mod network;
pub mod processes;
@ -367,7 +368,7 @@ impl DataCollector {
#[cfg(target_family = "unix")]
{
self.data.load_avg = cpu::get_load_avg().ok();
self.data.load_avg = Some(cpu::get_load_avg());
}
}
}

8
src/data_collection/cpu/sysinfo.rs
View file

@ -6,9 +6,9 @@ use std::collections::VecDeque;
use sysinfo::{LoadAvg, System};
use super::{CpuData, CpuDataType, CpuHarvest};
use crate::data_collection::cpu::LoadAvgHarvest;
use crate::data_collection::{cpu::LoadAvgHarvest, error::CollectionResult};
pub fn get_cpu_data_list(sys: &System, show_average_cpu: bool) -> crate::error::Result<CpuHarvest> {
pub fn get_cpu_data_list(sys: &System, show_average_cpu: bool) -> CollectionResult<CpuHarvest> {
let mut cpu_deque: VecDeque<_> = sys
.cpus()
.iter()
@ -31,10 +31,10 @@ pub fn get_cpu_data_list(sys: &System, show_average_cpu: bool) -> crate::error::
Ok(Vec::from(cpu_deque))
}
pub fn get_load_avg() -> crate::error::Result<LoadAvgHarvest> {
pub fn get_load_avg() -> LoadAvgHarvest {
// The API for sysinfo apparently wants you to call it like this, rather than
// using a &System.
let LoadAvg { one, five, fifteen } = sysinfo::System::load_average();
Ok([one as f32, five as f32, fifteen as f32])
[one as f32, five as f32, fifteen as f32]
}

6
src/data_collection/disks/freebsd.rs
View file

@ -7,7 +7,7 @@ use serde::Deserialize;
use super::{keep_disk_entry, DiskHarvest, IoHarvest};
use crate::{
data_collection::{deserialize_xo, disks::IoData, DataCollector},
data_collection::{deserialize_xo, disks::IoData, error::CollectionResult, DataCollector},
utils::error,
};
@ -27,7 +27,7 @@ struct FileSystem {
mounted_on: String,
}
pub fn get_io_usage() -> error::Result<IoHarvest> {
pub fn get_io_usage() -> CollectionResult<IoHarvest> {
// TODO: Should this (and other I/O collectors) fail fast? In general, should
// collection ever fail fast?
#[allow(unused_mut)]
@ -59,7 +59,7 @@ pub fn get_io_usage() -> error::Result<IoHarvest> {
Ok(io_harvest)
}
pub fn get_disk_usage(collector: &DataCollector) -> error::Result<Vec<DiskHarvest>> {
pub fn get_disk_usage(collector: &DataCollector) -> CollectionResult<Vec<DiskHarvest>> {
let disk_filter = &collector.filters.disk_filter;
let mount_filter = &collector.filters.mount_filter;
let vec_disks: Vec<DiskHarvest> = get_disk_info().map(|storage_system_information| {

30
src/data_collection/error.rs Normal file
View file

@ -0,0 +1,30 @@
use anyhow::anyhow;
/// An error to do with data collection.
#[derive(Debug)]
pub enum CollectionError {
/// A general error to propagate back up. A wrapper around [`anyhow::Error`].
General(anyhow::Error),
/// The collection is unsupported.
Unsupported,
}
impl CollectionError {
// pub(crate) fn general<E: Into<anyhow::Error>>(error: E) -> Self {
// Self::General(error.into())
// }
pub(crate) fn from_str(msg: &'static str) -> Self {
Self::General(anyhow!(msg))
}
}
/// A [`Result`] with the error type being a [`DataCollectionError`].
pub(crate) type CollectionResult<T> = Result<T, CollectionError>;
impl From<std::io::Error> for CollectionError {
fn from(err: std::io::Error) -> Self {
CollectionError::General(err.into())
}
}

5
src/data_collection/processes.rs
View file

@ -33,8 +33,7 @@ cfg_if! {
use std::{borrow::Cow, time::Duration};
use super::DataCollector;
use crate::utils::error;
use super::{error::CollectionResult, DataCollector};
cfg_if! {
if #[cfg(target_family = "windows")] {
@ -131,7 +130,7 @@ impl ProcessHarvest {
}
impl DataCollector {
pub(crate) fn get_processes(&mut self) -> error::Result<Vec<ProcessHarvest>> {
pub(crate) fn get_processes(&mut self) -> CollectionResult<Vec<ProcessHarvest>> {
cfg_if! {
if #[cfg(target_os = "linux")] {
let time_diff = self.data.collection_time

161
src/data_collection/processes/linux.rs
View file

@ -13,10 +13,7 @@ use process::*;
use sysinfo::ProcessStatus;
use super::{Pid, ProcessHarvest, UserTable};
use crate::{
data_collection::DataCollector,
utils::error::{self, BottomError},
};
use crate::data_collection::{error::CollectionResult, DataCollector};
/// Maximum character length of a `/proc/<PID>/stat`` process name.
/// If it's equal or greater, then we instead refer to the command for the name.
@ -64,7 +61,9 @@ struct CpuUsage {
cpu_fraction: f64,
}
fn cpu_usage_calculation(prev_idle: &mut f64, prev_non_idle: &mut f64) -> error::Result<CpuUsage> {
fn cpu_usage_calculation(
prev_idle: &mut f64, prev_non_idle: &mut f64,
) -> CollectionResult<CpuUsage> {
let (idle, non_idle) = {
// From SO answer: https://stackoverflow.com/a/23376195
let first_line = {
@ -132,7 +131,7 @@ fn get_linux_cpu_usage(
fn read_proc(
prev_proc: &PrevProcDetails, process: Process, args: ReadProcArgs, user_table: &mut UserTable,
) -> error::Result<(ProcessHarvest, u64)> {
) -> CollectionResult<(ProcessHarvest, u64)> {
let Process {
pid: _,
uid,
@ -298,7 +297,7 @@ pub(crate) struct ReadProcArgs {
pub(crate) fn linux_process_data(
collector: &mut DataCollector, time_difference_in_secs: u64,
) -> error::Result<Vec<ProcessHarvest>> {
) -> CollectionResult<Vec<ProcessHarvest>> {
let total_memory = collector.total_memory();
let prev_proc = PrevProc {
prev_idle: &mut collector.prev_idle,
@ -323,88 +322,82 @@ pub(crate) fn linux_process_data(
// TODO: [PROC THREADS] Add threads
if let Ok(CpuUsage {
let CpuUsage {
mut cpu_usage,
cpu_fraction,
}) = cpu_usage_calculation(prev_idle, prev_non_idle)
{
if unnormalized_cpu {
let num_processors = collector.sys.system.cpus().len() as f64;
} = cpu_usage_calculation(prev_idle, prev_non_idle)?;
// Note we *divide* here because the later calculation divides `cpu_usage` - in
// effect, multiplying over the number of cores.
cpu_usage /= num_processors;
}
if unnormalized_cpu {
let num_processors = collector.sys.system.cpus().len() as f64;
let mut pids_to_clear: HashSet<Pid> = pid_mapping.keys().cloned().collect();
let pids = fs::read_dir("/proc")?.flatten().filter_map(|dir| {
if is_str_numeric(dir.file_name().to_string_lossy().trim()) {
Some(dir.path())
} else {
None
}
});
let args = ReadProcArgs {
use_current_cpu_total,
cpu_usage,
cpu_fraction,
total_memory,
time_difference_in_secs,
uptime: sysinfo::System::uptime(),
};
let process_vector: Vec<ProcessHarvest> = pids
.filter_map(|pid_path| {
if let Ok(process) = Process::from_path(pid_path) {
let pid = process.pid;
let prev_proc_details = pid_mapping.entry(pid).or_default();
#[allow(unused_mut)]
if let Ok((mut process_harvest, new_process_times)) =
read_proc(prev_proc_details, process, args, user_table)
{
#[cfg(feature = "gpu")]
if let Some(gpus) = &collector.gpu_pids {
gpus.iter().for_each(|gpu| {
// add mem/util for all gpus to pid
if let Some((mem, util)) = gpu.get(&(pid as u32)) {
process_harvest.gpu_mem += mem;
process_harvest.gpu_util += util;
}
});
if let Some(gpu_total_mem) = &collector.gpus_total_mem {
process_harvest.gpu_mem_percent = (process_harvest.gpu_mem as f64
/ *gpu_total_mem as f64
* 100.0)
as f32;
}
}
prev_proc_details.cpu_time = new_process_times;
prev_proc_details.total_read_bytes = process_harvest.total_read_bytes;
prev_proc_details.total_write_bytes = process_harvest.total_write_bytes;
pids_to_clear.remove(&pid);
return Some(process_harvest);
}
}
None
})
.collect();
pids_to_clear.iter().for_each(|pid| {
pid_mapping.remove(pid);
});
Ok(process_vector)
} else {
Err(BottomError::GenericError(
"Could not calculate CPU usage.".to_string(),
))
// Note we *divide* here because the later calculation divides `cpu_usage` - in
// effect, multiplying over the number of cores.
cpu_usage /= num_processors;
}
let mut pids_to_clear: HashSet<Pid> = pid_mapping.keys().cloned().collect();
let pids = fs::read_dir("/proc")?.flatten().filter_map(|dir| {
if is_str_numeric(dir.file_name().to_string_lossy().trim()) {
Some(dir.path())
} else {
None
}
});
let args = ReadProcArgs {
use_current_cpu_total,
cpu_usage,
cpu_fraction,
total_memory,
time_difference_in_secs,
uptime: sysinfo::System::uptime(),
};
let process_vector: Vec<ProcessHarvest> = pids
.filter_map(|pid_path| {
if let Ok(process) = Process::from_path(pid_path) {
let pid = process.pid;
let prev_proc_details = pid_mapping.entry(pid).or_default();
#[allow(unused_mut)]
if let Ok((mut process_harvest, new_process_times)) =
read_proc(prev_proc_details, process, args, user_table)
{
#[cfg(feature = "gpu")]
if let Some(gpus) = &collector.gpu_pids {
gpus.iter().for_each(|gpu| {
// add mem/util for all gpus to pid
if let Some((mem, util)) = gpu.get(&(pid as u32)) {
process_harvest.gpu_mem += mem;
process_harvest.gpu_util += util;
}
});
if let Some(gpu_total_mem) = &collector.gpus_total_mem {
process_harvest.gpu_mem_percent =
(process_harvest.gpu_mem as f64 / *gpu_total_mem as f64 * 100.0)
as f32;
}
}
prev_proc_details.cpu_time = new_process_times;
prev_proc_details.total_read_bytes = process_harvest.total_read_bytes;
prev_proc_details.total_write_bytes = process_harvest.total_write_bytes;
pids_to_clear.remove(&pid);
return Some(process_harvest);
}
}
None
})
.collect();
pids_to_clear.iter().for_each(|pid| {
pid_mapping.remove(pid);
});
Ok(process_vector)
}
#[cfg(test)]

4
src/data_collection/processes/unix.rs
View file

@ -13,9 +13,9 @@ cfg_if! {
use super::ProcessHarvest;
use crate::data_collection::{DataCollector, processes::*};
use crate::utils::error;
use crate::data_collection::error::CollectionResult;
pub fn sysinfo_process_data(collector: &mut DataCollector) -> error::Result<Vec<ProcessHarvest>> {
pub fn sysinfo_process_data(collector: &mut DataCollector) -> CollectionResult<Vec<ProcessHarvest>> {
let sys = &collector.sys.system;
let use_current_cpu_total = collector.use_current_cpu_total;
let unnormalized_cpu = collector.unnormalized_cpu;

7
src/data_collection/processes/unix/process_ext.rs
View file

@ -6,16 +6,13 @@ use hashbrown::HashMap;
use sysinfo::{ProcessStatus, System};
use super::ProcessHarvest;
use crate::{
data_collection::{processes::UserTable, Pid},
utils::error,
};
use crate::data_collection::{error::CollectionResult, processes::UserTable, Pid};
pub(crate) trait UnixProcessExt {
fn sysinfo_process_data(
sys: &System, use_current_cpu_total: bool, unnormalized_cpu: bool, total_memory: u64,
user_table: &mut UserTable,
) -> error::Result<Vec<ProcessHarvest>> {
) -> CollectionResult<Vec<ProcessHarvest>> {
let mut process_vector: Vec<ProcessHarvest> = Vec::new();
let process_hashmap = sys.processes();
let cpu_usage = sys.global_cpu_info().cpu_usage() as f64 / 100.0;

8
src/data_collection/processes/unix/user_table.rs
View file

@ -1,6 +1,6 @@
use hashbrown::HashMap;
use crate::utils::error::{self, BottomError};
use crate::data_collection::error::{CollectionError, CollectionResult};
#[derive(Debug, Default)]
pub struct UserTable {
@ -8,7 +8,7 @@ pub struct UserTable {
}
impl UserTable {
pub fn get_uid_to_username_mapping(&mut self, uid: libc::uid_t) -> error::Result<String> {
pub fn get_uid_to_username_mapping(&mut self, uid: libc::uid_t) -> CollectionResult<String> {
if let Some(user) = self.uid_user_mapping.get(&uid) {
Ok(user.clone())
} else {
@ -17,12 +17,12 @@ impl UserTable {
let passwd = unsafe { libc::getpwuid(uid) };
if passwd.is_null() {
Err(BottomError::GenericError("passwd is inaccessible".into()))
Err(CollectionError::from_str("passwd is inaccessible"))
} else {
// SAFETY: We return early if passwd is null.
let username = unsafe { std::ffi::CStr::from_ptr((*passwd).pw_name) }
.to_str()
.map_err(|err| BottomError::GenericError(err.to_string()))?
.map_err(|err| CollectionError::General(err.into()))?
.to_string();
self.uid_user_mapping.insert(uid, username.clone());

3
src/data_collection/processes/windows.rs
View file

@ -3,12 +3,13 @@
use std::time::Duration;
use super::ProcessHarvest;
use crate::data_collection::error::CollectionResult;
use crate::data_collection::DataCollector;
// TODO: There's a lot of shared code with this and the unix impl.
pub fn sysinfo_process_data(
collector: &mut DataCollector,
) -> crate::utils::error::Result<Vec<ProcessHarvest>> {
) -> CollectionResult<Vec<ProcessHarvest>> {
let sys = &collector.sys.system;
let users = &collector.sys.users;
let use_current_cpu_total = collector.use_current_cpu_total;

7
src/main.rs
View file

@ -52,7 +52,6 @@ use data_conversion::*;
use event::{handle_key_event_or_break, handle_mouse_event, BottomEvent, CollectionThreadEvent};
use options::{args, get_color_scheme, get_config_path, get_or_create_config, init_app};
use tui::{backend::CrosstermBackend, Terminal};
use utils::error;
#[allow(unused_imports)]
use utils::logging::*;
@ -64,10 +63,10 @@ use utils::logging::*;
fn try_drawing(
terminal: &mut Terminal<CrosstermBackend<std::io::Stdout>>, app: &mut App,
painter: &mut canvas::Painter,
) -> error::Result<()> {
) -> anyhow::Result<()> {
if let Err(err) = painter.draw_data(terminal, app) {
cleanup_terminal(terminal)?;
Err(err)
Err(err.into())
} else {
Ok(())
}
@ -76,7 +75,7 @@ fn try_drawing(
/// Clean up the terminal before returning it to the user.
fn cleanup_terminal(
terminal: &mut Terminal<CrosstermBackend<std::io::Stdout>>,
) -> error::Result<()> {
) -> anyhow::Result<()> {
disable_raw_mode()?;
execute!(
terminal.backend_mut(),

9
src/utils/error.rs
View file

@ -8,16 +8,7 @@ pub type Result<T> = result::Result<T, BottomError>;
/// An error that can occur while Bottom runs.
#[derive(Debug, Error, PartialEq, Eq)]
pub enum BottomError {
/// An error when there is an IO exception.
#[error("IO exception, {0}")]
InvalidIo(String),
/// An error to represent generic errors.
#[error("Error, {0}")]
GenericError(String),
}
impl From<std::io::Error> for BottomError {
fn from(err: std::io::Error) -> Self {
BottomError::InvalidIo(err.to_string())
}
}