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//! Disk stats for FreeBSD.
use std::io;
use serde::Deserialize;
use super::{keep_disk_entry, DiskHarvest, IoHarvest};
use crate::{
app::data_harvester::DataCollector, data_harvester::deserialize_xo,
data_harvester::disks::IoData, utils::error,
};
use hashbrown::HashMap;
#[derive(Deserialize, Debug, Default)]
#[serde(rename_all = "kebab-case")]
struct StorageSystemInformation {
filesystem: Vec<FileSystem>,
}
#[derive(Deserialize, Debug)]
#[serde(rename_all = "kebab-case")]
struct FileSystem {
name: String,
total_blocks: u64,
used_blocks: u64,
available_blocks: u64,
mounted_on: String,
}
pub fn get_io_usage() -> error::Result<IoHarvest> {
// TODO: Should this (and other I/O collectors) fail fast? In general, should collection ever fail fast?
#[allow(unused_mut)]
let mut io_harvest: HashMap<String, Option<IoData>> =
get_disk_info().map(|storage_system_information| {
storage_system_information
.filesystem
.into_iter()
.map(|disk| (disk.name, None))
.collect()
})?;
#[cfg(feature = "zfs")]
{
use crate::app::data_harvester::disks::zfs_io_counters;
if let Ok(zfs_io) = zfs_io_counters::zfs_io_stats() {
for io in zfs_io.into_iter() {
let mount_point = io.device_name().to_string_lossy();
io_harvest.insert(
mount_point.to_string(),
Some(IoData {
read_bytes: io.read_bytes(),
write_bytes: io.write_bytes(),
}),
);
}
}
}
Ok(io_harvest)
}
pub fn get_disk_usage(collector: &DataCollector) -> error::Result<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| {
storage_system_information
.filesystem
.into_iter()
.filter_map(|disk| {
if keep_disk_entry(&disk.name, &disk.mounted_on, disk_filter, mount_filter) {
Some(DiskHarvest {
free_space: Some(disk.available_blocks * 1024),
used_space: Some(disk.used_blocks * 1024),
total_space: Some(disk.total_blocks * 1024),
mount_point: disk.mounted_on,
name: disk.name,
})
} else {
None
}
})
.collect()
})?;
Ok(vec_disks)
}
fn get_disk_info() -> io::Result<StorageSystemInformation> {
// TODO: Ideally we don't have to shell out to a new program.
let output = std::process::Command::new("df")
.args(["--libxo", "json", "-k", "-t", "ufs,msdosfs,zfs"])
.output()?;
deserialize_xo("storage-system-information", &output.stdout)
}
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