Jack Wills
718 lines
24 KiB
Rust
718 lines
24 KiB
Rust
use bollard::{
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Docker,
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container::{
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ListContainersOptions, LogsOptions, MemoryStatsStats, RemoveContainerOptions,
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StartContainerOptions, Stats, StatsOptions,
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},
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service::ContainerSummary,
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};
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use futures_util::StreamExt;
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use parking_lot::Mutex;
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use std::{
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collections::HashMap,
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sync::{Arc, atomic::AtomicUsize},
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};
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use tokio::{
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sync::mpsc::{Receiver, Sender},
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task::JoinHandle,
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};
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use uuid::Uuid;
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use crate::{
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ENTRY_POINT,
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app_data::{AppData, ContainerId, DockerCommand, State},
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app_error::AppError,
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config::Config,
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ui::{GuiState, Status},
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};
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mod message;
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pub use message::DockerMessage;
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#[derive(Debug, Clone, Eq, Hash, PartialEq)]
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enum SpawnId {
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Stats((ContainerId, Binate)),
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Log(ContainerId),
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}
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impl SpawnId {
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/// Extract the &ContainerId out of self
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const fn get_id(&self) -> &ContainerId {
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match self {
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Self::Log(id) | Self::Stats((id, _)) => id,
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}
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}
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}
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/// Cpu & Mem stats take twice as long as the update interval to get a value, so will have two being executed at the same time
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/// SpawnId::Stats takes container_id and binate value to enable both cycles of the same container_id to be inserted into the hashmap
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/// Binate value is toggled when all handles have been spawned off
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/// Also effectively means that the minimum docker_update interval will be 1000ms
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#[derive(Debug, Clone, Copy, Eq, Hash, PartialEq)]
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enum Binate {
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One,
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Two,
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}
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impl Binate {
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const fn toggle(self) -> Self {
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match self {
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Self::One => Self::Two,
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Self::Two => Self::One,
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}
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}
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}
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pub struct DockerData {
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app_data: Arc<Mutex<AppData>>,
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binate: Binate,
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config: Config,
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docker: Arc<Docker>,
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gui_state: Arc<Mutex<GuiState>>,
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receiver: Receiver<DockerMessage>,
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spawns: Arc<Mutex<HashMap<SpawnId, JoinHandle<()>>>>,
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}
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impl DockerData {
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/// Use docker stats to calculate current cpu usage
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#[allow(clippy::cast_precision_loss)]
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fn calculate_usage(stats: &Stats) -> f64 {
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let mut cpu_percentage = 0.0;
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let cpu_delta = stats
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.cpu_stats
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.cpu_usage
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.total_usage
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.saturating_sub(stats.precpu_stats.cpu_usage.total_usage)
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as f64;
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if let (Some(cpu_stats_usage), Some(precpu_stats_usage)) = (
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stats.cpu_stats.system_cpu_usage,
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stats.precpu_stats.system_cpu_usage,
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) {
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let system_delta = cpu_stats_usage.saturating_sub(precpu_stats_usage) as f64;
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let online_cpus = stats.cpu_stats.online_cpus.unwrap_or_else(|| {
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u64::try_from(
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stats
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.cpu_stats
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.cpu_usage
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.percpu_usage
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.as_ref()
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.map_or(0, std::vec::Vec::len),
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)
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.unwrap_or_default()
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}) as f64;
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if system_delta > 0.0 && cpu_delta > 0.0 {
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cpu_percentage = (cpu_delta / system_delta) * online_cpus * 100.0;
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}
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}
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cpu_percentage
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}
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/// Get a single docker stat in order to update mem and cpu usage
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/// don't take &self, so that can tokio::spawn into it's own thread
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/// remove if from spawns hashmap when complete
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async fn update_container_stat(
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app_data: Arc<Mutex<AppData>>,
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docker: Arc<Docker>,
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state: State,
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spawn_id: SpawnId,
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spawns: Arc<Mutex<HashMap<SpawnId, JoinHandle<()>>>>,
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) {
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let id = spawn_id.get_id();
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let mut stream = docker
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.stats(
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id.get(),
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Some(StatsOptions {
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stream: false,
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one_shot: false,
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}),
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)
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.take(1);
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while let Some(Ok(stats)) = stream.next().await {
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// Memory stats are only collected if the container is alive - is this the behaviour we want?
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let (mem_stat, cpu_stats) = if state.is_alive() {
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let mem_cache = stats.memory_stats.stats.map_or(0, |i| match i {
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MemoryStatsStats::V1(x) => x.inactive_file,
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MemoryStatsStats::V2(x) => x.inactive_file,
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});
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(
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Some(
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stats
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.memory_stats
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.usage
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.unwrap_or_default()
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.saturating_sub(mem_cache),
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),
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Some(Self::calculate_usage(&stats)),
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)
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} else {
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(None, None)
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};
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let op_key = stats
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.networks
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.as_ref()
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.and_then(|networks| networks.keys().next().cloned());
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let (rx, tx) = if let Some(key) = op_key {
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stats
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.networks
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.unwrap_or_default()
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.get(&key)
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.map_or((0, 0), |f| (f.rx_bytes, f.tx_bytes))
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} else {
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(0, 0)
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};
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app_data.lock().update_stats_by_id(
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id,
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cpu_stats,
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mem_stat,
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stats.memory_stats.limit.unwrap_or_default(),
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rx,
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tx,
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);
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}
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spawns.lock().remove(&spawn_id);
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}
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/// Update all stats, spawn each container into own tokio::spawn thread
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fn update_all_container_stats(&mut self) {
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let all_ids = self.app_data.lock().get_all_id_state();
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for (state, id) in all_ids {
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let spawn_id = SpawnId::Stats((id, self.binate));
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if let std::collections::hash_map::Entry::Vacant(spawns) =
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self.spawns.lock().entry(spawn_id.clone())
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{
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spawns.insert(tokio::spawn(Self::update_container_stat(
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Arc::clone(&self.app_data),
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Arc::clone(&self.docker),
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state,
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spawn_id,
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Arc::clone(&self.spawns),
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)));
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}
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}
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self.binate = self.binate.toggle();
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}
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/// Get all current containers, handle into ContainerItem in the app_data struct rather than here
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/// Just make sure that items sent are guaranteed to have an id
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/// If in a containerised runtime, will ignore any container that uses the `/app/oxker` as an entry point, unless the `-s` flag is set
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async fn update_all_containers(&self) {
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let containers = self
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.docker
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.list_containers(Some(ListContainersOptions::<String> {
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all: true,
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..Default::default()
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}))
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.await
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.unwrap_or_default();
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let output = containers
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.into_iter()
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.filter_map(|f| match f.id {
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Some(_) => {
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if self.config.in_container
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&& f.command
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.as_ref()
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.is_some_and(|c| c.starts_with(ENTRY_POINT))
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&& self.config.show_self
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{
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None
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} else {
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Some(f)
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}
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}
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None => None,
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})
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.collect::<Vec<ContainerSummary>>();
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self.app_data.lock().update_containers(output);
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}
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/// Update single container logs
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/// remove it from spawns hashmap when complete
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async fn update_log(
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app_data: Arc<Mutex<AppData>>,
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docker: Arc<Docker>,
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id: ContainerId,
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since: u64,
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spawns: Arc<Mutex<HashMap<SpawnId, JoinHandle<()>>>>,
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stderr: bool,
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) {
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let options = Some(LogsOptions::<String> {
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stdout: true,
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stderr,
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timestamps: true,
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since: i64::try_from(since).unwrap_or_default(),
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..Default::default()
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});
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let mut logs = docker.logs(id.get(), options);
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let mut output = vec![];
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while let Some(Ok(value)) = logs.next().await {
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let data = value.to_string();
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if !data.trim().is_empty() {
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output.push(data);
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}
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}
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app_data.lock().update_log_by_id(output, &id);
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spawns.lock().remove(&SpawnId::Log(id));
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}
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/// Update all logs, spawn each container into own tokio::spawn thread
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fn init_all_logs(&self, all_ids: Vec<(State, ContainerId)>) -> Arc<AtomicUsize> {
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let init = Arc::new(AtomicUsize::new(0));
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for (_, id) in all_ids {
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let app_data: Arc<parking_lot::lock_api::Mutex<parking_lot::RawMutex, AppData>> =
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Arc::clone(&self.app_data);
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let docker = Arc::clone(&self.docker);
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let spawns = Arc::clone(&self.spawns);
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let std_err = self.config.show_std_err;
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let init = Arc::clone(&init);
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self.spawns.lock().insert(
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SpawnId::Log(id.clone()),
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tokio::spawn(async move {
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Self::update_log(app_data, docker, id, 0, spawns, std_err).await;
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init.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
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}),
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);
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}
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init
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}
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/// Initialize docker container data, before any messages are received
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async fn initialise_container_data(&mut self) {
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self.gui_state.lock().status_push(Status::Init);
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let loading_uuid = Uuid::new_v4();
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GuiState::start_loading_animation(&self.gui_state, loading_uuid);
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self.update_all_containers().await;
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let all_ids = self.app_data.lock().get_all_id_state();
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let all_ids_len = all_ids.len();
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let init = self.init_all_logs(all_ids);
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self.update_all_container_stats();
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while init.load(std::sync::atomic::Ordering::SeqCst) != all_ids_len {
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self.app_data.lock().sort_containers();
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tokio::time::sleep(std::time::Duration::from_millis(10)).await;
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}
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self.gui_state.lock().stop_loading_animation(loading_uuid);
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self.gui_state.lock().status_del(Status::Init);
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}
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/// Update all cpu_mem, and selected container log (if a log update join_handle isn't currently being executed)
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async fn update_everything(&mut self) {
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self.update_all_containers().await;
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if let Some(container) = self.app_data.lock().get_selected_container() {
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let last_updated = container.last_updated;
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let spawn_id = SpawnId::Log(container.id.clone());
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// Only spawn if not already spawned with a given id/binate pair
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if let std::collections::hash_map::Entry::Vacant(spawns) =
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self.spawns.lock().entry(spawn_id)
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{
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spawns.insert(tokio::spawn(Self::update_log(
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Arc::clone(&self.app_data),
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Arc::clone(&self.docker),
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container.id.clone(),
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last_updated,
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Arc::clone(&self.spawns),
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self.config.show_std_err,
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)));
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}
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}
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self.update_all_container_stats();
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self.app_data.lock().sort_containers();
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}
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/// Set the global error as the docker error, and set gui_state to error
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fn set_error(
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app_data: &Arc<Mutex<AppData>>,
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error: DockerCommand,
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gui_state: &Arc<Mutex<GuiState>>,
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) {
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app_data
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.lock()
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.set_error(AppError::DockerCommand(error), gui_state, Status::Error);
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}
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/// Execute docker commands (start, stop etc) on it's own tokio thread
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async fn execute_command(&mut self, control: DockerCommand, id: ContainerId) {
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let (app_data, docker, gui_state) = (
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Arc::clone(&self.app_data),
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Arc::clone(&self.docker),
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Arc::clone(&self.gui_state),
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);
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tokio::spawn(async move {
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let uuid = Uuid::new_v4();
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GuiState::start_loading_animation(&gui_state, uuid);
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if match control {
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DockerCommand::Delete => {
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gui_state.lock().set_delete_container(None);
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docker
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.remove_container(
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id.get(),
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Some(RemoveContainerOptions {
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v: false,
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force: true,
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link: false,
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}),
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)
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.await
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}
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DockerCommand::Pause => docker.pause_container(id.get()).await,
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DockerCommand::Restart => docker.restart_container(id.get(), None).await,
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DockerCommand::Resume => docker.unpause_container(id.get()).await,
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DockerCommand::Start => {
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docker
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.start_container(id.get(), None::<StartContainerOptions<String>>)
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.await
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}
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DockerCommand::Stop => docker.stop_container(id.get(), None).await,
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}
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.is_err()
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{
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Self::set_error(&app_data, control, &gui_state);
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}
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gui_state.lock().stop_loading_animation(uuid);
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});
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self.update_everything().await;
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}
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/// Handle incoming messages, container controls & all container information update
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/// Spawn Docker commands off into own thread
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async fn message_handler(&mut self) {
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while let Some(message) = self.receiver.recv().await {
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match message {
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DockerMessage::ConfirmDelete(id) => {
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self.gui_state.lock().set_delete_container(Some(id));
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}
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DockerMessage::Control((command, id)) => self.execute_command(command, id).await,
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DockerMessage::Exec(docker_tx) => {
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docker_tx.send(Arc::clone(&self.docker)).ok();
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}
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DockerMessage::Update => self.update_everything().await,
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}
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}
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}
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/// Send an update message every x ms, where x is the args.docker_interval
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fn heartbeat(config: &Config, docker_tx: Sender<DockerMessage>) {
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let update_duration =
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std::time::Duration::from_millis(u64::from(config.docker_interval_ms));
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let mut now = std::time::Instant::now();
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tokio::spawn(async move {
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loop {
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docker_tx.send(DockerMessage::Update).await.ok();
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if let Some(to_sleep) = update_duration.checked_sub(now.elapsed()) {
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tokio::time::sleep(to_sleep).await;
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}
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now = std::time::Instant::now();
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}
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});
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}
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/// Initialise self, and start the message receiving loop
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pub async fn start(
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app_data: Arc<Mutex<AppData>>,
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docker: Docker,
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docker_rx: Receiver<DockerMessage>,
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docker_tx: Sender<DockerMessage>,
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gui_state: Arc<Mutex<GuiState>>,
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) {
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let args = app_data.lock().config.clone();
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if app_data.lock().get_error().is_none() {
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let mut inner = Self {
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app_data,
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config: args,
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binate: Binate::One,
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docker: Arc::new(docker),
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gui_state,
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receiver: docker_rx,
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spawns: Arc::new(Mutex::new(HashMap::new())),
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};
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inner.initialise_container_data().await;
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Self::heartbeat(&inner.config, docker_tx);
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inner.message_handler().await;
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}
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}
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}
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|
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// tests, use redis-test container, check logs exists, and selector of logs, and that it increases, and matches end, when you run restart on the docker containers
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#[cfg(test)]
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#[allow(clippy::float_cmp)]
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mod tests {
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use bollard::container::{
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BlkioStats, CPUStats, CPUUsage, MemoryStats, PidsStats, Stats, StorageStats, ThrottlingData,
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};
|
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use super::*;
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|
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fn gen_stats() -> Stats {
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Stats {
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read: String::new(),
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preread: String::new(),
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num_procs: 1,
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pids_stats: PidsStats {
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current: None,
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limit: None,
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},
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network: None,
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networks: None,
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memory_stats: MemoryStats {
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stats: None,
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max_usage: None,
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usage: None,
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failcnt: None,
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limit: None,
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commit: None,
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commit_peak: None,
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commitbytes: None,
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commitpeakbytes: None,
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privateworkingset: None,
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},
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blkio_stats: BlkioStats {
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io_service_bytes_recursive: None,
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io_serviced_recursive: None,
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io_queue_recursive: None,
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io_service_time_recursive: None,
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io_wait_time_recursive: None,
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io_merged_recursive: None,
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io_time_recursive: None,
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sectors_recursive: None,
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},
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cpu_stats: CPUStats {
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cpu_usage: CPUUsage {
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percpu_usage: Some(vec![50]),
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usage_in_usermode: 10,
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total_usage: 100,
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usage_in_kernelmode: 20,
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},
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system_cpu_usage: Some(400),
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online_cpus: Some(1),
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throttling_data: ThrottlingData {
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periods: 0,
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throttled_periods: 0,
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throttled_time: 0,
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},
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},
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precpu_stats: CPUStats {
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cpu_usage: CPUUsage {
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percpu_usage: Some(vec![50]),
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usage_in_usermode: 10,
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total_usage: 100,
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usage_in_kernelmode: 20,
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},
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system_cpu_usage: Some(400),
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online_cpus: Some(1),
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throttling_data: ThrottlingData {
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periods: 0,
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throttled_periods: 0,
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throttled_time: 0,
|
|
},
|
|
},
|
|
storage_stats: StorageStats {
|
|
read_count_normalized: None,
|
|
read_size_bytes: None,
|
|
write_count_normalized: None,
|
|
write_size_bytes: None,
|
|
},
|
|
name: String::new(),
|
|
id: String::new(),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_calculate_usage_50() {
|
|
let mut stats = gen_stats();
|
|
stats.precpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![50]),
|
|
usage_in_usermode: 10,
|
|
total_usage: 100,
|
|
usage_in_kernelmode: 20,
|
|
},
|
|
system_cpu_usage: Some(400),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
stats.cpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![150]),
|
|
usage_in_usermode: 20,
|
|
total_usage: 150,
|
|
usage_in_kernelmode: 30,
|
|
},
|
|
system_cpu_usage: Some(500),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
let cpu_percentage = DockerData::calculate_usage(&stats);
|
|
assert_eq!(50.0, cpu_percentage);
|
|
}
|
|
|
|
#[test]
|
|
fn test_calculate_usage_25() {
|
|
let mut stats = gen_stats();
|
|
stats.precpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![50]),
|
|
usage_in_usermode: 10,
|
|
total_usage: 100,
|
|
usage_in_kernelmode: 20,
|
|
},
|
|
system_cpu_usage: Some(400),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
stats.cpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![75]),
|
|
usage_in_usermode: 20,
|
|
total_usage: 125,
|
|
usage_in_kernelmode: 30,
|
|
},
|
|
system_cpu_usage: Some(500),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
|
|
let cpu_percentage = DockerData::calculate_usage(&stats);
|
|
assert_eq!(25.0, cpu_percentage);
|
|
}
|
|
|
|
#[test]
|
|
fn test_calculate_usage_75() {
|
|
let mut stats = gen_stats();
|
|
stats.precpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![50]),
|
|
usage_in_usermode: 10,
|
|
total_usage: 100,
|
|
usage_in_kernelmode: 20,
|
|
},
|
|
system_cpu_usage: Some(400),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
|
|
stats.cpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![175]),
|
|
usage_in_usermode: 20,
|
|
total_usage: 175,
|
|
usage_in_kernelmode: 30,
|
|
},
|
|
system_cpu_usage: Some(500),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
|
|
let cpu_percentage = DockerData::calculate_usage(&stats);
|
|
assert_eq!(75.0, cpu_percentage);
|
|
}
|
|
|
|
#[test]
|
|
fn test_calculate_usage_100() {
|
|
let mut stats = gen_stats();
|
|
stats.precpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![50]),
|
|
usage_in_usermode: 10,
|
|
total_usage: 100,
|
|
usage_in_kernelmode: 20,
|
|
},
|
|
system_cpu_usage: Some(400),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
stats.cpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![200]),
|
|
usage_in_usermode: 20,
|
|
total_usage: 200,
|
|
usage_in_kernelmode: 30,
|
|
},
|
|
system_cpu_usage: Some(500),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
let cpu_percentage = DockerData::calculate_usage(&stats);
|
|
assert_eq!(100.0, cpu_percentage);
|
|
}
|
|
|
|
#[test]
|
|
fn test_calculate_usage_175() {
|
|
let mut stats = gen_stats();
|
|
stats.precpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![50]),
|
|
usage_in_usermode: 10,
|
|
total_usage: 100,
|
|
usage_in_kernelmode: 20,
|
|
},
|
|
system_cpu_usage: Some(400),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
|
|
stats.cpu_stats = CPUStats {
|
|
cpu_usage: CPUUsage {
|
|
percpu_usage: Some(vec![275]),
|
|
usage_in_usermode: 20,
|
|
total_usage: 275,
|
|
usage_in_kernelmode: 30,
|
|
},
|
|
system_cpu_usage: Some(500),
|
|
online_cpus: Some(1),
|
|
throttling_data: ThrottlingData {
|
|
periods: 0,
|
|
throttled_periods: 0,
|
|
throttled_time: 0,
|
|
},
|
|
};
|
|
|
|
let cpu_percentage = DockerData::calculate_usage(&stats);
|
|
assert_eq!(175.0, cpu_percentage);
|
|
}
|
|
}
|