add timeouts
This commit is contained in:
parent
11fd970400
commit
86d5cd6d0a
7
Cargo.lock
generated
7
Cargo.lock
generated
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@ -587,6 +587,7 @@ dependencies = [
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"clap",
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"config",
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"futures",
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"humantime",
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"k8s-openapi",
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"kube",
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"kube_quantity",
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@ -679,6 +680,12 @@ version = "1.0.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
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[[package]]
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name = "humantime"
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version = "2.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
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[[package]]
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name = "hyper"
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version = "0.14.27"
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@ -8,6 +8,7 @@ anyhow = "1.0.75"
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clap = { version = "4.4.7", features = ["derive", "env"] }
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config = "0.13.3"
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futures = "0.3.29"
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humantime = "2.1.0"
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k8s-openapi = { version = "0.20.0", features = ["v1_27"] }
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kube = { version = "0.86.0", features = ["ws"] }
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kube_quantity = "0.7.0"
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@ -17,6 +17,15 @@ pub struct Config {
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/// Docker image used for git Jobs
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pub image: String,
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#[arg(short,long,env="GIT_REMOTE_K8S_TIMEOUT")]
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pub timeout: Option<humantime::Duration>,
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#[arg(long("setup-timeout"),env = "GIT_REMOTE_K8S_SETUP_TIMEOUT")]
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pub setup_timeout: Option<humantime::Duration>,
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#[arg(long("transfer-timeout"), env = "GIT_REMOTE_K8S_TRANSFER_TIMEOUT")]
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pub transfer_timeout: Option<humantime::Duration>,
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#[arg(index = 1)]
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/// remote name
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pub remote_name: String,
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254
src/main.rs
254
src/main.rs
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@ -16,6 +16,7 @@ use once_cell::sync::Lazy;
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use std::collections::BTreeMap;
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use std::process::ExitCode;
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use std::sync::Arc;
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use std::sync::atomic::{AtomicU8, Ordering};
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use std::time::Duration;
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use anyhow::{anyhow, bail, Result};
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@ -32,6 +33,8 @@ use kube::{api::*, config::KubeConfigOptions};
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use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
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use tokio::task::JoinHandle;
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const KUBE_JOB_LABEL: &str = "sleeper";
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const KUBE_CONTAINER_NAME: &str = KUBE_JOB_LABEL;
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const SCHEME: &str = "k8s";
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const PAT_SCHEME: &str = r"[a-zA-Z][a-zA-Z0-9+.-]*";
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const PAT_PATH: &str = r"[0-9a-zA-Z](?:[0-9a-zA-Z.-]*[0-9a-zA-Z])?";
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@ -44,12 +47,20 @@ mod test;
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mod cfg;
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mod errors;
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use crate::{cfg::*,errors::*};
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mod pod_utils;
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use pod_utils::is_pod_finished;
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use crate::{cfg::*,errors::*,pod_utils::*};
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struct AppContext {
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config: Arc<Config>,
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ensures: Vec<JoinHandle<()>>,
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rc: Arc<AtomicU8>,
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}
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impl Into<ExitCode> for AppContext {
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fn into(self) -> ExitCode {
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self.rc.clone().fetch_add(0, Ordering::SeqCst).into()
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}
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}
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impl AppContext {
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@ -57,6 +68,7 @@ impl AppContext {
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Ok(Self {
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config: Arc::new(Config::parse()),
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ensures: vec![],
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rc: Arc::new(AtomicU8::new(1)),
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// ensurance: ensurance,
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})
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}
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@ -70,6 +82,9 @@ impl AppContext {
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kube::Config::from_kubeconfig(&kco).await?,
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)?)
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}
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async fn set_exit_code(&self, rc: u8) {
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self.rc.store(rc, Ordering::SeqCst);
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}
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}
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impl Drop for AppContext {
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@ -90,152 +105,49 @@ impl Drop for AppContext {
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}
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}
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trait PodExt {
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fn label_selectors(&self) -> Vec<String>;
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fn field_selectors(&self) -> Result<Vec<String>>;
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}
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impl PodExt for Pod {
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fn label_selectors(&self) -> Vec<String> {
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let l = self.labels();
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let selectors = Vec::with_capacity(l.len());
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for (k, v) in l.iter() {
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format!("{}={}", k, v);
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}
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selectors
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}
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fn field_selectors(&self) -> Result<Vec<String>> {
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Ok(vec![
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format!(
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"metadata.name={}",
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self.meta()
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.name
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.as_ref()
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.ok_or(ApplicationError::PodNoName)?
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),
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format!(
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"metadata.namespace={}",
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self.meta()
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.namespace
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.as_ref()
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.ok_or(ApplicationError::PodNoNamespace)?
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),
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])
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}
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}
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async fn wait_for_pod_running_watch(pods: &Api<Pod>, pod: Pod) -> Result<()> {
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let mut wp = WatchParams::default();
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for fs in pod.field_selectors()? {
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wp = wp.fields(&fs);
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}
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let mut stream = pods.watch(&wp, "0").await?.boxed();
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while let Some(status) = stream.try_next().await? {
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match status {
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WatchEvent::Modified(o) => {
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let s = o.status.as_ref().expect("status exists on pod");
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if s.phase.clone().unwrap_or_default() == "Running" {
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info!("Ready to attach to {}", o.name_any());
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break;
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}
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if s.phase.clone().unwrap_or_default() == "Failed" {
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error!("Pod which we are awaiting has entered failed state instead of running");
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return Err(ApplicationError::PodCouldNotStart.into());
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}
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if s.phase.clone().unwrap_or_default() == "Succeeded" {
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error!("Pod which we are awaiting has completed instead");
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return Err(ApplicationError::PodDidNotWait.into());
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}
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}
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_ => {}
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}
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}
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Ok(())
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}
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async fn is_pod_running(pods: &Api<Pod>, pod: Pod) -> Result<bool> {
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let got_pod = pods
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.get(
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&pod.metadata
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.name
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.ok_or(anyhow!("pod metadata must have a name"))?,
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)
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.await?;
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let phase = got_pod
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.status
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.ok_or(anyhow!("pod has no status"))?
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.phase
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.ok_or(anyhow!("pod has no status.phase"))?;
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if phase == "Running" {
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Ok(true)
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} else {
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Ok(false)
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}
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}
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async fn is_pod_finished(pods: &Api<Pod>, pod: &Pod) -> Result<bool> {
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let got_pod = pods
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.get(
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&pod.metadata
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.name
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.as_ref()
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.ok_or(anyhow!("pod metadata must have a name"))?,
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)
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.await?;
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let phase = got_pod
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.status
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.ok_or(anyhow!("pod has no status"))?
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.phase
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.ok_or(anyhow!("pod has no status.phase"))?;
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if phase == "Failed" {
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Ok(true)
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} else if phase == "Succeeded" {
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Ok(true)
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} else {
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Ok(false)
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}
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}
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async fn wait_for_pod_running(pods: &Api<Pod>, pod: &Pod) -> Result<()> {
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let (tx, mut rx) = tokio::sync::mpsc::channel(1);
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let xtx = tx.clone();
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let xpods = pods.clone();
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let xpod = pod.clone();
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let _p: JoinHandle<Result<()>> = tokio::spawn(async move {
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let r = is_pod_running(&xpods, xpod).await;
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if let Ok(true) = r {
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xtx.send(Ok(())).await.expect("couldn't send to channel");
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}
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if let Err(e) = r {
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xtx.send(Err(e)).await.expect("couldn't send to channel");
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}
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Ok(())
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});
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let xtx = tx.clone();
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let xpods = pods.clone();
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let xpod = pod.clone();
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let _w = tokio::spawn(async move {
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xtx.send(wait_for_pod_running_watch(&xpods, xpod).await)
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.await
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.expect("couldn't send on channel");
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});
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let r = rx.recv().await;
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if r.is_none() {
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bail!("failed to read API while waiting for pod to start");
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}
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let r = r.expect("failed to extract value after checking for None");
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r
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}
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#[tokio::main]
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async fn main() -> ExitCode {
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let mut rc = ExitCode::from(0);
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if let Err(e) = main_wrapped(&mut rc).await {
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let mut ctx = {
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let ctx = AppContext::new();
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match ctx {
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Err(e) => {
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panic!("{}", e)
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},
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Ok(c) => c,
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}
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};
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// let cfg = ctx.cfg();
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if let Err(e) = real_main(&mut ctx).await {
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error!("{}", e);
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return ExitCode::from(127);
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}
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rc
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ctx.into()
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}
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async fn real_main(ctx: &mut AppContext) -> Result<()> {
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let sto = ctx.cfg().timeout;
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let sto = ctx.cfg().setup_timeout.or(sto);
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let tto = ctx.cfg().timeout;
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let tto = ctx.cfg().transfer_timeout.or(tto);
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let (pods_api, kube_worker_name) = {
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if let Some(d) = sto {
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tokio::time::timeout(d.into(), setup_pod(ctx)).await??
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} else {
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setup_pod(ctx).await?
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}
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};
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let _r = {
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if let Some(d) = tto {
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tokio::time::timeout(d.into(), do_git(ctx, pods_api, kube_worker_name)).await??
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} else {
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do_git(ctx, pods_api, kube_worker_name).await?
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}
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};
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Ok(())
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//Ok(())
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}
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async fn set_log_level(level: Level) {
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@ -246,10 +158,7 @@ async fn set_log_level(level: Level) {
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tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");
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}
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async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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*rc = 1.into();
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let ctx = AppContext::new()?;
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async fn setup_pod(ctx: &mut AppContext) -> Result<(Api<Pod>, String)> {
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let cfg = ctx.cfg();
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set_log_level(match cfg.verbose {
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@ -275,28 +184,26 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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let __kube_worker_name_val = format!("git-remote-worker-{kube_pvc}");
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let kube_worker_name = __kube_worker_name_val.as_str();
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let kube_image = cfg.image.as_str();
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let kube_job_label = "sleeper";
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let kube_container_name = kube_job_label;
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let kube_shell_executable = "/bin/sh";
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let kube_shell_parameters = "-c";
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let kube_shell_sleeper_command = r#"
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set -e
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set -e
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SD="$(date +%s)"
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CD=$SD
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LD=$SD
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echo $SD > /repo.timeout
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while [ $(( LD + 900 )) -ge $CD ];do
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sleep 5
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CD="$(date +%s)"
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NLD=$(cat /repo.timeout)
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if [ $NLD -ne $LD ];then
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echo "updated last run time to $NLD (from $LD)"
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fi
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LD=$NLD
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done
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echo "worker ran for $(( CD - SD )) seconds"
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"#;
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SD="$(date +%s)"
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CD=$SD
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LD=$SD
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echo $SD > /repo.timeout
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while [ $(( LD + 900 )) -ge $CD ];do
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sleep 5
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CD="$(date +%s)"
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NLD=$(cat /repo.timeout)
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if [ $NLD -ne $LD ];then
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echo "updated last run time to $NLD (from $LD)"
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fi
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LD=$NLD
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done
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echo "worker ran for $(( CD - SD )) seconds"
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"#;
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let kube_repo_mount_path = "/repo";
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let parsed_size: Result<ParsedQuantity, ParseQuantityError> =
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@ -312,7 +219,7 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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let kube_pod_labels = vec![
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("com.kn8v.git-remote-k8s/repo-name", kube_pvc),
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("com.kn8v.git-remote-k8s/job", kube_job_label),
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("com.kn8v.git-remote-k8s/job", KUBE_JOB_LABEL),
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];
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info!("Remote Context: {}", kube_context);
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@ -379,7 +286,7 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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spec.restart_policy = Some("Never".to_owned());
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{
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let mut container = Container::default();
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container.name = kube_container_name.to_owned();
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container.name = KUBE_CONTAINER_NAME.to_owned();
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container.command = Some(vec![
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kube_shell_executable.to_owned(),
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kube_shell_parameters.to_owned(),
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@ -387,13 +294,13 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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]);
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container.image = Some(kube_image.to_owned());
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container.working_dir = Some(kube_repo_mount_path.to_owned());
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container.image_pull_policy = Some("IfNotPresent".to_owned());
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{
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let mut volume_mount = VolumeMount::default();
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volume_mount.mount_path = kube_repo_mount_path.to_owned();
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volume_mount.name = "repo".to_owned();
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container.volume_mounts = Some(vec![volume_mount]);
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}
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container.image_pull_policy = Some("IfNotPresent".to_owned());
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spec.containers = vec![container];
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}
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{
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@ -502,7 +409,10 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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info!("waiting for worker pod to come online");
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wait_for_pod_running(&pods_api, &pod).await?;
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info!("work pod is online. continuing.");
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Ok((pods_api, kube_worker_name.to_owned()))
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}
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async fn do_git(ctx: &AppContext, pods_api: Api<Pod>, kube_worker_name: String) -> Result<()> {
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let mut gitcommand = "date +%s > /repo.timeout; 1>&2 echo welcome from the git-remote-k8s worker pod ; [ -f HEAD ] || git init --bare 1>&2".to_owned();
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let mut ttyout = tokio::io::stdout();
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let mut ttyin = tokio::io::stdin();
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@ -527,10 +437,10 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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.stdin(true)
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.stdout(true)
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.stderr(true)
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.container(kube_container_name.to_owned());
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.container(KUBE_CONTAINER_NAME.to_owned());
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// let (ready_tx, ready_rx) = oneshot::channel::<()>();
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let mut stuff = pods_api
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.exec(kube_worker_name, vec!["sh", "-c", &gitcommand], &ap)
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.exec(&kube_worker_name, vec!["sh", "-c", &gitcommand], &ap)
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.await?;
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let mut podout = stuff
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.stdout()
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@ -630,9 +540,9 @@ async fn main_wrapped(rc: &mut ExitCode) -> crate::Result<()> {
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// integer exit code.
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if status.reason == Some("NonZeroExitCode".to_owned()) {
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info!("exit status of remote job: {}", exitcode);
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*rc = exitcode.into();
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ctx.set_exit_code(exitcode).await;
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} else {
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*rc = 0.into();
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ctx.set_exit_code(0).await;
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}
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debug!("waiting for group to exit");
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barrier.wait().await;
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|
|
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154
src/pod_utils.rs
Normal file
154
src/pod_utils.rs
Normal file
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|
@ -0,0 +1,154 @@
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// TODO: there is a stupid panic here that will be annoying to fix.
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// it happens when there is a timeout that cancels the tasks
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// listening to these sends while this one is sending resulting
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// in a totally ignorable error that I don't know what to do
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// with right now.
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// 2023-11-01T05:02:05.009858Z INFO git_remote_k8s: waiting for worker pod to come online
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// 2023-11-01T05:02:05.018697Z ERROR git_remote_k8s: deadline has elapsed
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// 2023-11-01T05:02:05.019458Z ERROR kube_client::client::builder: failed with error channel closed
|
||||
// thread 'tokio-runtime-worker' panicked at src/pod_utils.rs:118:36:
|
||||
// couldn't send to channel: SendError { .. }
|
||||
// note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
|
||||
// thread 'tokio-runtime-worker' panicked at src/pod_utils.rs:131:14:
|
||||
// couldn't send on channel: SendError { .. }
|
||||
|
||||
|
||||
use crate::*;
|
||||
|
||||
pub trait PodExt {
|
||||
fn label_selectors(&self) -> Vec<String>;
|
||||
fn field_selectors(&self) -> Result<Vec<String>>;
|
||||
}
|
||||
|
||||
impl PodExt for Pod {
|
||||
fn label_selectors(&self) -> Vec<String> {
|
||||
let l = self.labels();
|
||||
let selectors = Vec::with_capacity(l.len());
|
||||
for (k, v) in l.iter() {
|
||||
format!("{}={}", k, v);
|
||||
}
|
||||
selectors
|
||||
}
|
||||
|
||||
fn field_selectors(&self) -> Result<Vec<String>> {
|
||||
Ok(vec![
|
||||
format!(
|
||||
"metadata.name={}",
|
||||
self.meta()
|
||||
.name
|
||||
.as_ref()
|
||||
.ok_or(ApplicationError::PodNoName)?
|
||||
),
|
||||
format!(
|
||||
"metadata.namespace={}",
|
||||
self.meta()
|
||||
.namespace
|
||||
.as_ref()
|
||||
.ok_or(ApplicationError::PodNoNamespace)?
|
||||
),
|
||||
])
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn wait_for_pod_running_watch(pods: &Api<Pod>, pod: Pod) -> Result<()> {
|
||||
let mut wp = WatchParams::default();
|
||||
for fs in pod.field_selectors()? {
|
||||
wp = wp.fields(&fs);
|
||||
}
|
||||
let mut stream = pods.watch(&wp, "0").await?.boxed();
|
||||
while let Some(status) = stream.try_next().await? {
|
||||
match status {
|
||||
WatchEvent::Modified(o) => {
|
||||
let s = o.status.as_ref().expect("status exists on pod");
|
||||
if s.phase.clone().unwrap_or_default() == "Running" {
|
||||
info!("Ready to attach to {}", o.name_any());
|
||||
break;
|
||||
}
|
||||
if s.phase.clone().unwrap_or_default() == "Failed" {
|
||||
error!("Pod which we are awaiting has entered failed state instead of running");
|
||||
return Err(ApplicationError::PodCouldNotStart.into());
|
||||
}
|
||||
if s.phase.clone().unwrap_or_default() == "Succeeded" {
|
||||
error!("Pod which we are awaiting has completed instead");
|
||||
return Err(ApplicationError::PodDidNotWait.into());
|
||||
}
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub async fn is_pod_running(pods: &Api<Pod>, pod: Pod) -> Result<bool> {
|
||||
let got_pod = pods
|
||||
.get(
|
||||
&pod.metadata
|
||||
.name
|
||||
.ok_or(anyhow!("pod metadata must have a name"))?,
|
||||
)
|
||||
.await?;
|
||||
let phase = got_pod
|
||||
.status
|
||||
.ok_or(anyhow!("pod has no status"))?
|
||||
.phase
|
||||
.ok_or(anyhow!("pod has no status.phase"))?;
|
||||
if phase == "Running" {
|
||||
Ok(true)
|
||||
} else {
|
||||
Ok(false)
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn is_pod_finished(pods: &Api<Pod>, pod: &Pod) -> Result<bool> {
|
||||
let got_pod = pods
|
||||
.get(
|
||||
&pod.metadata
|
||||
.name
|
||||
.as_ref()
|
||||
.ok_or(anyhow!("pod metadata must have a name"))?,
|
||||
)
|
||||
.await?;
|
||||
let phase = got_pod
|
||||
.status
|
||||
.ok_or(anyhow!("pod has no status"))?
|
||||
.phase
|
||||
.ok_or(anyhow!("pod has no status.phase"))?;
|
||||
if phase == "Failed" {
|
||||
Ok(true)
|
||||
} else if phase == "Succeeded" {
|
||||
Ok(true)
|
||||
} else {
|
||||
Ok(false)
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn wait_for_pod_running(pods: &Api<Pod>, pod: &Pod) -> Result<()> {
|
||||
let (tx, mut rx) = tokio::sync::mpsc::channel(1);
|
||||
let xtx = tx.clone();
|
||||
let xpods = pods.clone();
|
||||
let xpod = pod.clone();
|
||||
let _p: JoinHandle<Result<()>> = tokio::spawn(async move {
|
||||
let r = is_pod_running(&xpods, xpod).await;
|
||||
if let Ok(true) = r {
|
||||
xtx.send(Ok(())).await.expect("couldn't send to channel");
|
||||
}
|
||||
if let Err(e) = r {
|
||||
xtx.send(Err(e)).await.expect("couldn't send to channel");
|
||||
}
|
||||
Ok(())
|
||||
});
|
||||
let xtx = tx.clone();
|
||||
let xpods = pods.clone();
|
||||
let xpod = pod.clone();
|
||||
let _w = tokio::spawn(async move {
|
||||
xtx.send(wait_for_pod_running_watch(&xpods, xpod).await)
|
||||
.await
|
||||
.expect("couldn't send on channel");
|
||||
});
|
||||
let r = rx.recv().await;
|
||||
if r.is_none() {
|
||||
bail!("failed to read API while waiting for pod to start");
|
||||
}
|
||||
let r = r.expect("failed to extract value after checking for None");
|
||||
r
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user