OXYGENHUB
# 4fa0da126b70 oxygenhub / crates / hub / src / web / flow.rs
31.5 KiB · Rust · last changed Coverage from a workstation: oh coverage upload, shown as uploaded 24 days ago source blame history raw
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//! The Flow tab (hub spec §13.2): runs of a repository, and a run's job
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//! graph with live status and logs.
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4 
use super::settings::{csrf, require};
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use super::{filters, lookup, lookup_role, Error, Page, RepoShell, Shell};
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use crate::auth::{Access, Role, Viewer};
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use crate::db::{self, flow as fdb};
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use crate::Shared;
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use askama::Template;
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use axum::extract::{Form, Path, Query, State};
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use axum::response::{IntoResponse, Redirect, Response};
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use axum::Json;
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use serde::Deserialize;
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pub struct RunRow {
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    pub r: fdb::Run,
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    pub duration: String,
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    pub jobs: Vec<(String, String)>,
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    /// "3rd in line" for a run still waiting for a runner.
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    pub place: Option<String>,
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}
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#[derive(Template)]
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#[template(path = "flow_runs.html")]
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pub struct RunsPage {
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    shell: Shell,
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    repo: RepoShell,
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    runs: Vec<RunRow>,
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    enabled: bool,
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    older: Option<i64>,
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    /// Writers may start runs: the bookmarks to offer, default first.
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    can_run: bool,
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    bookmarks: Vec<String>,
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    error: Option<String>,
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    /// Why this viewer is not offered "Run pipeline", when they are not.
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    why_not: Option<String>,
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}
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#[derive(Deserialize)]
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pub struct RunsQuery {
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    before: Option<i64>,
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    /// Why a "Run pipeline" or "Re-run" did not start.
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    error: Option<String>,
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}
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/// Why `viewer` may not start runs here, or `None` when they may.
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pub fn why_not_run(enabled: bool, signed_in: bool, role: Role) -> Option<String> {
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    if !enabled {
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        Some("Flow is off for this repository; a site administrator can turn it on in Settings → Flow.".into())
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    } else if !signed_in {
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        Some("Sign in with write access to run the pipeline.".into())
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    } else if role < Role::Write {
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        Some("Running the pipeline needs write access to this repository.".into())
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    } else {
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        None
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    }
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}
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const PER_PAGE: i64 = 30;
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pub async fn runs(
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    State(app): State<Shared>,
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    viewer: Viewer,
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    Path((owner, name)): Path<(String, String)>,
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    Query(q): Query<RunsQuery>,
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) -> Result<Page<RunsPage>, Error> {
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    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow"), &viewer);
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    let (_repo, row, role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
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    let list = fdb::runs(&app.db, row.id, PER_PAGE + 1, q.before).await.map_err(|e| Error::from_db(shell.clone(), e))?;
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    let older = (list.len() as i64 > PER_PAGE).then(|| list[PER_PAGE as usize - 1].id);
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    let queue = if list.iter().any(|r| r.live()) { fdb::queue(&app.db).await.unwrap_or_default() } else { vec![] };
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    let mut runs = Vec::new();
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    for r in list.into_iter().take(PER_PAGE as usize) {
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        let place = if r.live() { crate::flow::queue_info(&queue, row.id, r.id).place() } else { None };
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        let jobs = fdb::jobs(&app.db, r.id).await.unwrap_or_default();
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        let duration = match r.finished_ms {
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            Some(f) => crate::flow::human_ms(f - r.created_ms),
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            None if r.live() => crate::flow::human_ms(db::now_ms() - r.created_ms),
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            None => "–".into(),
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        };
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        runs.push(RunRow { jobs: jobs.into_iter().map(|j| (j.name, j.status)).collect(), duration, r, place });
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    }
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    let enabled = crate::flow::enabled(&app, &row);
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    let why_not = why_not_run(enabled, viewer.account().is_some(), role);
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    let can_run = why_not.is_none();
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    let bookmarks = if can_run { bookmark_names(&app, &row).await } else { vec![] };
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    Ok(Page(RunsPage {
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        shell,
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        repo: RepoShell::new(&app, &row, "flow").with_role(role),
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        runs,
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        enabled,
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        older,
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        can_run,
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        bookmarks,
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        error: q.error,
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        why_not,
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    }))
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}
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/// The repository's bookmarks, its default first.
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async fn bookmark_names(app: &Shared, row: &db::repos::RepoRow) -> Vec<String> {
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    let Some(repo) = crate::repos::RepoName::new(&row.owner, &row.name) else { return vec![] };
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    let mut names: Vec<String> = app.repos.read(&repo, |r, _| Ok(r.view()?.bookmarks.keys().cloned().collect())).await.unwrap_or_default();
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    names.sort_by_key(|n| (n != &row.default_bookmark, n.clone()));
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    names
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}
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#[derive(Deserialize)]
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pub struct StartForm {
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    #[serde(rename = "_csrf")]
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    csrf_token: String,
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    #[serde(default)]
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    bookmark: String,
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    /// A change's full hash: run the state whose only head it is.
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    #[serde(default)]
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    change: String,
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}
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/// `POST /{owner}/{name}/flow/start`: "Run pipeline" on a bookmark's
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/// current state, or on one committed change.
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pub async fn start(
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    State(app): State<Shared>,
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    viewer: Viewer,
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    Path((owner, name)): Path<(String, String)>,
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    Form(f): Form<StartForm>,
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) -> Result<Response, Error> {
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    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow"), &viewer);
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    let me = require(&viewer, &shell)?;
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    let (_, row, _) = lookup_role(&app, &shell, &viewer, &owner, &name, Access::Write).await?;
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    csrf(&viewer, &f.csrf_token, &shell)?;
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    let (started, what) = if f.change.trim().is_empty() {
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        (crate::flow::run_bookmark(&app, &row, f.bookmark.trim(), &me.account.username, &[]).await, f.bookmark.trim().to_string())
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    } else {
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        (crate::flow::run_change(&app, &row, &f.change, &me.account.username, &[]).await, format!("change {}", f.change.trim()))
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    };
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    Ok(match started {
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        Ok(n) => {
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            db::accounts::audit(&app.db, Some(&me.account), "flow.run", &format!("{owner}/{name}"), &format!("#{n} {what}")).await.ok();
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            Redirect::to(&format!("/{owner}/{name}/flow/{n}")).into_response()
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        }
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        Err(msg) => Redirect::to(&format!("/{owner}/{name}/flow?error={}", urlencoding(&msg))).into_response(),
142 
    })
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}
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#[derive(Deserialize)]
146 
pub struct RerunForm {
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    #[serde(rename = "_csrf")]
148 
    csrf_token: String,
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}
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/// `POST /{owner}/{name}/flow/{number}/rerun`.
152 
pub async fn rerun(
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    State(app): State<Shared>,
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    viewer: Viewer,
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    Path((owner, name, number)): Path<(String, String, i64)>,
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    Form(f): Form<RerunForm>,
157 
) -> Result<Response, Error> {
158 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow/{number}"), &viewer);
159 
    let me = require(&viewer, &shell)?;
160 
    let (_, row, _) = lookup_role(&app, &shell, &viewer, &owner, &name, Access::Write).await?;
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    csrf(&viewer, &f.csrf_token, &shell)?;
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    let run = fdb::run(&app.db, row.id, number)
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        .await
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        .map_err(|e| Error::from_db(shell.clone(), e))?
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        .ok_or_else(|| Error::not_found(shell.clone()))?;
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    Ok(match crate::flow::rerun(&app, &row, &run, &me.account.username).await {
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        Ok(n) => {
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            db::accounts::audit(&app.db, Some(&me.account), "flow.rerun", &format!("{owner}/{name}"), &format!("#{n} of #{number}"))
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                .await
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                .ok();
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            Redirect::to(&format!("/{owner}/{name}/flow/{n}")).into_response()
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        }
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        Err(msg) => Redirect::to(&format!("/{owner}/{name}/flow?error={}", urlencoding(&msg))).into_response(),
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    })
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}
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/// `POST /{owner}/{name}/flow/{number}/cancel` (oxygenflow#32).
178 
pub async fn cancel(
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    State(app): State<Shared>,
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    viewer: Viewer,
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    Path((owner, name, number)): Path<(String, String, i64)>,
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    Form(f): Form<RerunForm>,
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) -> Result<Response, Error> {
184 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow/{number}"), &viewer);
185 
    let me = require(&viewer, &shell)?;
186 
    let (_, row, _) = lookup_role(&app, &shell, &viewer, &owner, &name, Access::Write).await?;
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    csrf(&viewer, &f.csrf_token, &shell)?;
188 
    let run = fdb::run(&app.db, row.id, number)
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        .await
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        .map_err(|e| Error::from_db(shell.clone(), e))?
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        .ok_or_else(|| Error::not_found(shell.clone()))?;
192 
    Ok(match crate::flow::cancel(&app, &row, &run, &me.account.username).await {
193 
        Ok(()) => {
194 
            db::accounts::audit(&app.db, Some(&me.account), "flow.cancel", &format!("{owner}/{name}"), &format!("#{number}")).await.ok();
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            Redirect::to(&format!("/{owner}/{name}/flow/{number}")).into_response()
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        }
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        Err(msg) => Redirect::to(&format!("/{owner}/{name}/flow?error={}", urlencoding(&msg))).into_response(),
198 
    })
199 
}
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/// Percent-encode a message for a query string.
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fn urlencoding(s: &str) -> String {
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    s.bytes()
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        .map(|b| match b {
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            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'.' | b'_' | b'~' => (b as char).to_string(),
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            _ => format!("%{b:02X}"),
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        })
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        .collect()
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}
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/// A job placed in the graph.
212 
pub struct Node {
213 
    pub j: fdb::Job,
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    pub x: i64,
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    pub y: i64,
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    pub duration: String,
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}
218
219 
pub struct Edge {
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    pub d: String,
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    pub status: String,
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}
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224 
pub struct Graph {
225 
    pub nodes: Vec<Node>,
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    pub edges: Vec<Edge>,
227 
    pub width: i64,
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    pub height: i64,
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}
230
231 
pub const NODE_W: i64 = 200;
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pub const NODE_H: i64 = 48;
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const COL_GAP: i64 = 72;
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const ROW_GAP: i64 = 18;
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const PAD: i64 = 12;
236
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/// Columns by dependency depth, jobs in each column in name order.
238 
pub fn layout(jobs: Vec<fdb::Job>) -> Graph {
239 
    let mut by_depth: std::collections::BTreeMap<i64, Vec<fdb::Job>> = Default::default();
240 
    for j in jobs {
241 
        by_depth.entry(j.depth).or_default().push(j);
242 
    }
243 
    let rows = by_depth.values().map(Vec::len).max().unwrap_or(0) as i64;
244 
    let height = PAD * 2 + rows * NODE_H + (rows - 1).max(0) * ROW_GAP;
245 
    let mut nodes = Vec::new();
246 
    for (col, (_, mut js)) in by_depth.into_iter().enumerate() {
247 
        js.sort_by(|a, b| a.name.cmp(&b.name));
248 
        let n = js.len() as i64;
249 
        let column_h = n * NODE_H + (n - 1).max(0) * ROW_GAP;
250 
        let top = (height - column_h) / 2;
251 
        for (i, j) in js.into_iter().enumerate() {
252 
            let duration = crate::flow::duration(&j);
253 
            nodes.push(Node { x: PAD + col as i64 * (NODE_W + COL_GAP), y: top + i as i64 * (NODE_H + ROW_GAP), duration, j });
254 
        }
255 
    }
256 
    let mut edges = Vec::new();
257 
    for n in &nodes {
258 
        for d in n.j.depends_on() {
259 
            if let Some(from) = nodes.iter().find(|m| m.j.name == d) {
260 
                let (x1, y1) = (from.x + NODE_W, from.y + NODE_H / 2);
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                let (x2, y2) = (n.x, n.y + NODE_H / 2);
262 
                let mid = (x1 + x2) / 2;
263 
                edges.push(Edge { d: format!("M{x1},{y1} C{mid},{y1} {mid},{y2} {x2},{y2}"), status: from.j.status.clone() });
264 
            }
265 
        }
266 
    }
267 
    let cols = nodes.iter().map(|n| n.x).max().map(|x| x + NODE_W + PAD).unwrap_or(PAD * 2);
268 
    Graph { nodes, edges, width: cols, height: height.max(NODE_H + PAD * 2) }
269 
}
270
271 
pub fn glyph(status: &str) -> &'static str {
272 
    match status {
273 
        "passed" => "✓",
274 
        "failed" => "✕",
275 
        "running" => "●",
276 
        "skipped" => "⤼",
277 
        "cancelled" => "⊘",
278 
        "error" => "!",
279 
        _ => "○",
280 
    }
281 
}
282
283 
/// Failed tests a run page lists per job; the rest are counted.
284 
const SHOWN_FAILURES: i64 = 50;
285
286 
pub struct JobLog {
287 
    pub j: fdb::Job,
288 
    pub artifacts: Vec<fdb::Artifact>,
289 
    pub lines: Vec<fdb::LogLine>,
290 
    pub duration: String,
291 
    /// The last line shown; the live view asks for what follows.
292 
    pub last_seq: i64,
293 
    /// The job's coverage report, when it uploaded one (#113): its id and percentage.
294 
    pub coverage: Option<(i64, String)>,
295 
    /// The job's test report, when it uploaded one (#114), and its first
296 
    /// failures.
297 
    pub tests: Option<crate::junit::Report>,
298 
    pub failures: Vec<crate::junit::Case>,
299 
}
300
301 
#[derive(Template)]
302 
#[template(path = "flow_run.html")]
303 
pub struct RunPage {
304 
    shell: Shell,
305 
    repo: RepoShell,
306 
    run: fdb::Run,
307 
    graph: Graph,
308 
    logs: Vec<JobLog>,
309 
    duration: String,
310 
    /// Whether the viewer may re-run it.
311 
    can_rerun: bool,
312 
    /// Whether the viewer may cancel it.
313 
    can_cancel: bool,
314 
    /// Where a live run stands among the runners' work.
315 
    queue: Option<crate::flow::QueueInfo>,
316 
    /// Releases a writer may attach this run's artifacts to.
317 
    releases: Vec<db::releases::Release>,
318 
}
319
320 
/// Lines of a job's log a page shows before "the rest is loaded as it comes".
321 
const PAGE_LINES: i64 = 5000;
322
323 
pub async fn run(
324 
    State(app): State<Shared>,
325 
    viewer: Viewer,
326 
    Path((owner, name, id)): Path<(String, String, i64)>,
327 
) -> Result<Page<RunPage>, Error> {
328 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow/{id}"), &viewer);
329 
    let (_repo, row, role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
330 
    let run = fdb::run(&app.db, row.id, id)
331 
        .await
332 
        .map_err(|e| Error::from_db(shell.clone(), e))?
333 
        .ok_or_else(|| Error::not_found(shell.clone()))?;
334 
    let jobs = fdb::jobs(&app.db, run.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
335 
    let reports = crate::coverage::for_run(&app.db, run.id).await.unwrap_or_default();
336 
    let test_reports = crate::junit::for_run(&app.db, run.id).await.unwrap_or_default();
337 
    let mut logs = Vec::new();
338 
    for j in &jobs {
339 
        let lines = fdb::log(&app.db, j.id, 0, PAGE_LINES).await.unwrap_or_default();
340 
        let last_seq = lines.last().map(|l| l.seq).unwrap_or(0);
341 
        let artifacts = fdb::artifacts(&app.db, j.id).await.unwrap_or_default();
342 
        let coverage = reports
343 
            .iter()
344 
            .find(|r| r.job_id == Some(j.id))
345 
            .map(|r| (r.id, r.percent().map(|p| format!("{p:.1}%")).unwrap_or_else(|| "no lines".into())));
346 
        let tests = test_reports.iter().find(|r| r.job_id == j.id).cloned();
347 
        let failures = match &tests {
348 
            Some(r) if r.broken() > 0 => crate::junit::failures(&app.db, r.id, SHOWN_FAILURES).await.unwrap_or_default(),
349 
            _ => vec![],
350 
        };
351 
        logs.push(JobLog { duration: crate::flow::duration(j), j: j.clone(), artifacts, lines, last_seq, coverage, tests, failures });
352 
    }
353 
    let duration = match run.finished_ms {
354 
        Some(f) => crate::flow::human_ms(f - run.created_ms),
355 
        None => crate::flow::human_ms(db::now_ms() - run.created_ms),
356 
    };
357 
    let graph = layout(jobs);
358 
    let can_write = viewer.account().is_some() && role >= Role::Write;
359 
    let can_rerun = !run.live() && can_write && crate::flow::enabled(&app, &row);
360 
    let can_cancel = run.live() && can_write;
361 
    let queue = if run.live() {
362 
        let q = fdb::queue(&app.db).await.unwrap_or_default();
363 
        Some(crate::flow::queue_info(&q, row.id, run.id)).filter(|i| i.position.is_some())
364 
    } else {
365 
        None
366 
    };
367 
    let releases = if viewer.account().is_some() && role >= Role::Write && logs.iter().any(|l| !l.artifacts.is_empty()) {
368 
        db::releases::list(&app.db, row.id).await.unwrap_or_default()
369 
    } else {
370 
        vec![]
371 
    };
372 
    Ok(Page(RunPage {
373 
        shell,
374 
        repo: RepoShell::new(&app, &row, "flow").with_role(role),
375 
        run,
376 
        graph,
377 
        logs,
378 
        duration,
379 
        can_rerun,
380 
        can_cancel,
381 
        queue,
382 
        releases,
383 
    }))
384 
}
385
386 
#[derive(Deserialize)]
387 
pub struct LiveQuery {
388 
    /// `job:seq,job:seq`: the last log line each open job already shows.
389 
    after: Option<String>,
390 
}
391
392 
/// `GET /{owner}/{name}/flow/{id}/live`: statuses and new log lines, for the
393 
/// run page while it is live.
394 
pub async fn live(
395 
    State(app): State<Shared>,
396 
    viewer: Viewer,
397 
    Path((owner, name, id)): Path<(String, String, i64)>,
398 
    Query(q): Query<LiveQuery>,
399 
) -> Result<Response, Error> {
400 
    let shell = Shell::new(&app, "", &viewer);
401 
    let (_repo, row, _role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
402 
    let run = fdb::run(&app.db, row.id, id)
403 
        .await
404 
        .map_err(|e| Error::from_db(shell.clone(), e))?
405 
        .ok_or_else(|| Error::not_found(shell.clone()))?;
406 
    let jobs = fdb::jobs(&app.db, run.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
407 
    let after: std::collections::HashMap<i64, i64> = q
408 
        .after
409 
        .unwrap_or_default()
410 
        .split(',')
411 
        .filter_map(|p| p.split_once(':'))
412 
        .filter_map(|(a, b)| Some((a.parse().ok()?, b.parse().ok()?)))
413 
        .collect();
414 
    let mut out = Vec::new();
415 
    for j in &jobs {
416 
        let lines = match after.get(&j.id) {
417 
            Some(seq) => fdb::log(&app.db, j.id, *seq, 1000).await.unwrap_or_default(),
418 
            None => vec![],
419 
        };
420 
        out.push(serde_json::json!({
421 
            "id": j.id,
422 
            "name": j.name,
423 
            "status": j.status,
424 
            "glyph": glyph(&j.status),
425 
            "duration": crate::flow::duration(j),
426 
            "exit_code": j.exit_code,
427 
            "lines": lines.iter().map(|l| serde_json::json!({ "seq": l.seq, "t": l.t, "stream": l.stream, "text": l.text })).collect::<Vec<_>>(),
428 
        }));
429 
    }
430 
    Ok(Json(serde_json::json!({ "status": run.status, "live": run.live(), "jobs": out })).into_response())
431 
}
432
433 
// ------------------------------------------------------------ state stamps
434
435 
/// In rendered Markdown, the image path that is the viewed state's stamp.
436 
pub const STAMP_IMAGE: &str = ".flow/stamp";
437 
/// In rendered Markdown, the link path to the viewed state's run.
438 
pub const RUN_LINK: &str = ".flow/run";
439
440 
/// Resolve a ref to its state address, and whether the ref can move.
441 
async fn state_of(app: &Shared, owner: &str, name: &str, r: &str) -> Result<(String, bool), crate::repos::RepoError> {
442 
    let repo = crate::repos::RepoName::new(owner, name).ok_or(crate::repos::RepoError::NotFound)?;
443 
    let spec = r.to_string();
444 
    app.repos
445 
        .read(&repo, move |repo, cache| {
446 
            let t = crate::repos::view::resolve(repo, cache, &spec)?;
447 
            let moves = matches!(t.kind, crate::repos::view::RefKind::Bookmark | crate::repos::view::RefKind::Tag);
448 
            Ok((t.permalink().unwrap_or_default(), moves))
449 
        })
450 
        .await
451 
}
452
453 
/// `GET /{owner}/{name}/flow/stamp/{ref}` (hub spec §13.2).
454 
pub async fn stamp(
455 
    State(app): State<Shared>,
456 
    viewer: Viewer,
457 
    Path((owner, name, r)): Path<(String, String, String)>,
458 
) -> Result<Response, Error> {
459 
    let shell = Shell::new(&app, "", &viewer);
460 
    let (_repo, row, _role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
461 
    let (heads, moves) = state_of(&app, &owner, &name, &r).await.map_err(|e| Error::from_repo(shell.clone(), e))?;
462 
    if moves && !heads.is_empty() {
463 
        let mut res = axum::response::Redirect::to(&format!("/{owner}/{name}/flow/stamp/{heads}")).into_response();
464 
        res.headers_mut().insert(axum::http::header::CACHE_CONTROL, axum::http::HeaderValue::from_static("no-cache"));
465 
        return Ok(res);
466 
    }
467 
    let run = fdb::latest_for_heads(&app.db, row.id, &heads).await.map_err(|e| Error::from_db(shell.clone(), e))?;
468 
    let jobs = match &run {
469 
        Some(r) => fdb::jobs(&app.db, r.id).await.map_err(|e| Error::from_db(shell.clone(), e))?,
470 
        None => vec![],
471 
    };
472 
    let svg = stamp_svg(&heads, run.as_ref(), &jobs);
473 
    let cache = if run.as_ref().is_some_and(|r| !r.live()) { "public, max-age=3600" } else { "public, max-age=60" };
474 
    Ok((
475 
        [
476 
            (axum::http::header::CONTENT_TYPE, "image/svg+xml; charset=utf-8"),
477 
            (axum::http::header::CACHE_CONTROL, cache),
478 
            (axum::http::header::CONTENT_SECURITY_POLICY, "default-src 'none'; style-src 'unsafe-inline'"),
479 
        ],
480 
        svg,
481 
    )
482 
        .into_response())
483 
}
484
485 
/// `GET /{owner}/{name}/flow/at/{ref}`: the run of the ref's state, or the Flow tab.
486 
pub async fn at(
487 
    State(app): State<Shared>,
488 
    viewer: Viewer,
489 
    Path((owner, name, r)): Path<(String, String, String)>,
490 
) -> Result<Response, Error> {
491 
    let shell = Shell::new(&app, "", &viewer);
492 
    let (_repo, row, _role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
493 
    let (heads, _) = state_of(&app, &owner, &name, &r).await.map_err(|e| Error::from_repo(shell.clone(), e))?;
494 
    let run = fdb::latest_for_heads(&app.db, row.id, &heads).await.map_err(|e| Error::from_db(shell.clone(), e))?;
495 
    let to = match run {
496 
        Some(r) => format!("/{owner}/{name}/flow/{}", r.number),
497 
        None => format!("/{owner}/{name}/flow"),
498 
    };
499 
    Ok(axum::response::Redirect::to(&to).into_response())
500 
}
501
502 
fn xml(s: &str) -> String {
503 
    s.replace('&', "&amp;").replace('<', "&lt;").replace('>', "&gt;").replace('"', "&quot;")
504 
}
505
506 
/// The stamp: the mark, one glyph per job, the status, the state and the
507 
/// date; the same facts machine-readable in `<metadata>`. Fixed colours,
508 
/// because an image does not follow the page's theme.
509 
pub fn stamp_svg(heads: &str, run: Option<&fdb::Run>, jobs: &[fdb::Job]) -> String {
510 
    const CH: f64 = 6.6; // IBM Plex Mono at 11px
511 
    let colour = |s: &str| match s {
512 
        "passed" => "#5fe3a1",
513 
        "failed" | "error" => "#ff5e7a",
514 
        "running" => "#00e0f0",
515 
        _ => "#8592ad",
516 
    };
517 
    let short: String = heads.chars().take(12).collect();
518 
    let (status, date) = match run {
519 
        Some(r) => (r.status.as_str(), crate::render::time::absolute(r.created_ms as u64).chars().take(10).collect::<String>()),
520 
        None => ("no run", String::new()),
521 
    };
522 
    let mut ordered: Vec<&fdb::Job> = jobs.iter().collect();
523 
    ordered.sort_by(|a, b| (a.depth, &a.name).cmp(&(b.depth, &b.name)));
524 
    let label = "OXYGENFLOW";
525 
    let label_w = 14.0 + label.len() as f64 * 6.2 + 8.0;
526 
    let glyphs_w = if ordered.is_empty() { 0.0 } else { ordered.len() as f64 * 10.0 + 6.0 };
527 
    let tail = if date.is_empty() { format!("{status} · {short}") } else { format!("{status} · {short} · {date}") };
528 
    let right_w = 8.0 + glyphs_w + tail.chars().count() as f64 * CH + 8.0;
529 
    let w = (label_w + right_w).ceil();
530 
    let mut glyphs = String::new();
531 
    for (i, j) in ordered.iter().enumerate() {
532 
        let x = label_w + 8.0 + i as f64 * 10.0 + 4.0;
533 
        glyphs.push_str(&format!(
534 
            r#"<text x="{x:.1}" y="15" fill="{}" text-anchor="middle">{}</text>"#,
535 
            colour(&j.status),
536 
            glyph(&j.status)
537 
        ));
538 
    }
539 
    let meta = serde_json::json!({
540 
        "heads": heads.split('+').filter(|h| !h.is_empty()).collect::<Vec<_>>(),
541 
        "run": run.map(|r| r.number),
542 
        "status": status,
543 
        "jobs": ordered.iter().map(|j| serde_json::json!({ "name": j.name, "status": j.status, "receipt": j.receipt_hash })).collect::<Vec<_>>(),
544 
    });
545 
    let title = match run {
546 
        Some(r) => format!("OxygenFlow run #{} {status} on state {short}", r.number),
547 
        None => format!("OxygenFlow: no run for state {short}"),
548 
    };
549 
    format!(
550 
        r##"<svg xmlns="http://www.w3.org/2000/svg" width="{w}" height="22" viewBox="0 0 {w} 22" role="img" aria-label="{t}"><title>{t}</title><metadata>{m}</metadata><rect width="{w}" height="22" rx="4" fill="#0e1526"/><rect width="{lw:.1}" height="22" rx="4" fill="#0b3f9e"/><rect x="{lx:.1}" width="4" height="22" fill="#0b3f9e"/><circle cx="9" cy="11" r="3.2" fill="none" stroke="#00f0ff" stroke-width="1.6"/><text x="16" y="15" fill="#ffffff" font-family="Barlow, Verdana, sans-serif" font-size="10.5" font-weight="700" letter-spacing=".6">{label}</text><g font-family="IBM Plex Mono, ui-monospace, monospace" font-size="11">{glyphs}<text x="{tx:.1}" y="15" fill="{sc}">{tail}</text></g><rect x=".5" y=".5" width="{wi}" height="21" rx="3.5" fill="none" stroke="#1f2b47"/></svg>"##,
551 
        t = xml(&title),
552 
        m = xml(&meta.to_string()),
553 
        lw = label_w,
554 
        lx = label_w - 4.0,
555 
        tx = label_w + 8.0 + glyphs_w,
556 
        sc = colour(status),
557 
        tail = xml(&tail),
558 
        wi = w - 1.0,
559 
    )
560 
}
561
562 
/// A receipt kept in a repository (Oxygen spec §14.6), as pages show it.
563 
#[derive(Clone, Debug)]
564 
pub struct ReceiptRow {
565 
    pub attest: String,
566 
    pub job: String,
567 
    pub exit_code: u32,
568 
    pub duration: String,
569 
    pub runner: String,
570 
    pub run: String,
571 
    /// Why it does not verify, or that its runner's key was revoked.
572 
    pub problem: String,
573 
    pub made_ms: i64,
574 
}
575
576 
impl ReceiptRow {
577 
    pub fn passed(&self) -> bool {
578 
        self.exit_code == 0
579 
    }
580 
}
581
582 
/// The receipts kept for the state of `heads`.
583 
pub async fn receipts_of(app: &Shared, name: &crate::repos::RepoName, heads: Vec<oxy_core::hash::ChangeHash>) -> Vec<ReceiptRow> {
584 
    let base = app.config.base_url();
585 
    let found = app.repos.read(name, move |repo, _| Ok(repo.receipts(&heads)?)).await.unwrap_or_default();
586 
    found
587 
        .into_iter()
588 
        .map(|i| {
589 
            let r = &i.signed.receipt;
590 
            let run = i.signed.run().to_string();
591 
            ReceiptRow {
592 
                attest: i.attest.to_hex(),
593 
                job: r.job_name.clone(),
594 
                exit_code: r.exit_code,
595 
                duration: crate::flow::human_ms(r.duration_ms as i64),
596 
                runner: i.signed.runner.name.clone(),
597 
                // Only links to this hub are followed from the page.
598 
                run: if run.starts_with(base) { run } else { String::new() },
599 
                problem: match (i.problem, i.revoked) {
600 
                    (Some(p), _) => p,
601 
                    (None, true) => "the runner's key was revoked".into(),
602 
                    (None, false) => String::new(),
603 
                },
604 
                made_ms: i.signed.attest.hlc.wall_ms as i64,
605 
            }
606 
        })
607 
        .collect()
608 
}
609
610 
/// `GET /{owner}/{name}/receipts/{attest}`: a signed receipt, for
611 
/// `oxy receipt verify` or `oxy receipt import`.
612 
pub async fn receipt_file(
613 
    State(app): State<Shared>,
614 
    viewer: Viewer,
615 
    Path((owner, name, attest)): Path<(String, String, String)>,
616 
) -> Result<Response, Error> {
617 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/receipts/{attest}"), &viewer);
618 
    let (repo, _row, _role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
619 
    let Some(r) = oxy_core::hash::ObjectRef::from_hex(attest.trim_end_matches(".receipt")) else {
620 
        return Err(Error::not_found(shell));
621 
    };
622 
    let (job, bytes) = app
623 
        .repos
624 
        .read(&repo, move |repo, _| {
625 
            let i = repo.receipt(&r)?;
626 
            Ok((i.signed.receipt.job_name.clone(), i.signed.encode()))
627 
        })
628 
        .await
629 
        .map_err(|_| Error::not_found(shell.clone()))?;
630 
    let file: String = job.chars().filter(|c| c.is_ascii_alphanumeric() || matches!(c, '-' | '_' | '.')).collect();
631 
    Ok((
632 
        [
633 
            (axum::http::header::CONTENT_TYPE, "application/oxy-receipt".to_string()),
634 
            (axum::http::header::CONTENT_DISPOSITION, format!("attachment; filename=\"{file}-{}.receipt\"", r.short(12))),
635 
        ],
636 
        bytes,
637 
    )
638 
        .into_response())
639 
}
640
641 
/// `GET /{owner}/{name}/flow/{id}/artifacts/{job}/{artifact}`: an artifact
642 
/// of a run's job, read from the repository.
643 
pub async fn artifact_file(
644 
    State(app): State<Shared>,
645 
    viewer: Viewer,
646 
    Path((owner, name, id, job, artifact)): Path<(String, String, i64, String, String)>,
647 
) -> Result<Response, Error> {
648 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow/{id}/artifacts/{job}/{artifact}"), &viewer);
649 
    let (repo, row, _role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
650 
    let run = fdb::run(&app.db, row.id, id)
651 
        .await
652 
        .map_err(|e| Error::from_db(shell.clone(), e))?
653 
        .ok_or_else(|| Error::not_found(shell.clone()))?;
654 
    let jobs = fdb::jobs(&app.db, run.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
655 
    let Some(j) = jobs.iter().find(|j| j.name == job) else { return Err(Error::not_found(shell)) };
656 
    let arts = fdb::artifacts(&app.db, j.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
657 
    let Some(a) = arts.into_iter().find(|a| a.name == artifact) else { return Err(Error::not_found(shell)) };
658 
    let Some(blob) = oxy_core::hash::ObjectRef::from_hex(&a.blob) else { return Err(Error::not_found(shell)) };
659 
    let bytes = app.repos.read(&repo, move |r, _| Ok(r.read_blob(&blob)?)).await.map_err(|_| Error::not_found(shell.clone()))?;
660 
    let file = a.path.rsplit('/').next().unwrap_or(&a.name).to_string();
661 
    Ok((
662 
        [
663 
            (axum::http::header::CONTENT_TYPE, "application/octet-stream".to_string()),
664 
            (axum::http::header::CONTENT_DISPOSITION, format!("attachment; filename=\"{}\"", file.replace('"', ""))),
665 
        ],
666 
        bytes,
667 
    )
668 
        .into_response())
669 
}
670
671 
#[derive(Deserialize)]
672 
pub struct AttachForm {
673 
    _csrf: String,
674 
    release: i64,
675 
}
676
677 
/// `POST /{owner}/{name}/flow/{id}/artifacts/{job}/{artifact}/attach`: add
678 
/// an artifact to a release as an asset, named after its path; the release
679 
/// page then shows the run and receipt that built it.
680 
pub async fn attach(
681 
    State(app): State<Shared>,
682 
    viewer: Viewer,
683 
    Path((owner, name, id, job, artifact)): Path<(String, String, i64, String, String)>,
684 
    Form(f): Form<AttachForm>,
685 
) -> Result<Response, Error> {
686 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow/{id}"), &viewer);
687 
    require(&viewer, &shell)?;
688 
    csrf(&viewer, &f._csrf, &shell)?;
689 
    let (repo, row, _) = lookup_role(&app, &shell, &viewer, &owner, &name, Access::Write).await?;
690 
    let run = fdb::run(&app.db, row.id, id)
691 
        .await
692 
        .map_err(|e| Error::from_db(shell.clone(), e))?
693 
        .ok_or_else(|| Error::not_found(shell.clone()))?;
694 
    let jobs = fdb::jobs(&app.db, run.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
695 
    let Some(j) = jobs.iter().find(|j| j.name == job) else { return Err(Error::not_found(shell)) };
696 
    // A failing job's `when "always"` artifacts are not in its receipt, so
697 
    // they cannot stand for a release (oxygenflow#37).
698 
    if j.status != "passed" {
699 
        return Err(Error::bad(shell, "only a passing job's artifacts can be attached to a release"));
700 
    }
701 
    let arts = fdb::artifacts(&app.db, j.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
702 
    let Some(a) = arts.into_iter().find(|a| a.name == artifact) else { return Err(Error::not_found(shell)) };
703 
    let releases = db::releases::list(&app.db, row.id).await.map_err(|e| Error::from_db(shell.clone(), e))?;
704 
    let Some(rel) = releases.into_iter().find(|r| r.id == f.release) else { return Err(Error::not_found(shell)) };
705 
    let Some(blob) = oxy_core::hash::ObjectRef::from_hex(&a.blob) else { return Err(Error::not_found(shell)) };
706 
    let bytes = app.repos.read(&repo, move |r, _| Ok(r.read_blob(&blob)?)).await.map_err(|e| Error::from_repo(shell.clone(), e))?;
707 
    let file = a.path.rsplit('/').next().unwrap_or(&a.name).to_string();
708 
    super::releases::store_asset(&app, rel.id, &file, "application/octet-stream", &bytes)
709 
        .await
710 
        .map_err(|m| Error::bad(shell.clone(), m))?;
711 
    Ok(Redirect::to(&format!("/{owner}/{name}/releases/tag/{}", rel.tag)).into_response())
712 
}
713
714 
/// `/{owner}/{name}/flow/badge.svg`: the latest run on the default
715 
/// bookmark as a small SVG for a README, for whoever may read the
716 
/// repository. `passed` green, `failed` or `error` red, a run still going
717 
/// blue, none grey.
718 
pub async fn badge(
719 
    State(app): State<Shared>,
720 
    viewer: Viewer,
721 
    Path((owner, name)): Path<(String, String)>,
722 
) -> Result<axum::response::Response, Error> {
723 
    use axum::response::IntoResponse;
724 
    let shell = Shell::new(&app, &format!("/{owner}/{name}/flow"), &viewer);
725 
    let (_repo, row, _role) = lookup(&app, &shell, &viewer, &owner, &name).await?;
726 
    let latest = fdb::latest_on(&app.db, row.id, &row.default_bookmark).await.map_err(|e| Error::from_db(shell.clone(), e))?;
727 
    let (text, colour) = match latest.as_ref().map(|r| r.status.as_str()) {
728 
        Some("passed") => ("passing", "#2da44e"),
729 
        Some("failed") | Some("error") => ("failing", "#cf222e"),
730 
        Some("cancelled") => ("cancelled", "#6e7781"),
731 
        Some(_) => ("running", "#0969da"),
732 
        None => ("no runs", "#6e7781"),
733 
    };
734 
    let label = "OxygenFlow";
735 
    let (lw, tw) = (label.len() as u32 * 7 + 10, text.len() as u32 * 7 + 10);
736 
    let svg = format!(
737 
        r##"<svg xmlns="http://www.w3.org/2000/svg" width="{w}" height="20" role="img" aria-label="{label}: {text}"><title>{label}: {text}</title><rect width="{lw}" height="20" rx="3" fill="#555"/><rect x="{lw}" width="{tw}" height="20" rx="3" fill="{colour}"/><rect x="{lw}" width="4" height="20" fill="{colour}"/><g fill="#fff" font-family="Verdana,DejaVu Sans,sans-serif" font-size="11" text-anchor="middle"><text x="{lx}" y="14">{label}</text><text x="{tx}" y="14">{text}</text></g></svg>"##,
738 
        w = lw + tw,
739 
        lx = lw / 2,
740 
        tx = lw + tw / 2,
741 
    );
742 
    Ok((
743 
        [(axum::http::header::CONTENT_TYPE, "image/svg+xml; charset=utf-8"), (axum::http::header::CACHE_CONTROL, "no-cache, max-age=60")],
744 
        svg,
745 
    )
746 
        .into_response())
747 
}