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g1t/crates/runner/src/actions/mod.rs

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1//! Runs one GitHub Actions job, as GitHub's runner would: its steps in
2//! order, each `run` in a shell and each `uses` as the action it names,
3//! with the `${{ }}` contexts, the `GITHUB_*` variables and files, and the
4//! workflow commands steps print. It reports every step and the log to
5//! g1t as it goes.
6//!
7//! Configuration comes from the environment: `G1T_API`, and `ACTIONS_JOB`
8//! and `ACTIONS_TOKEN`, the job and its own token. Everything else, the
9//! job's definition, its contexts and its secrets, is fetched with them.
10
11mod blobs;
12mod files;
13mod process;
14mod report;
15mod uses;
16
17use std::collections::BTreeMap;
18use std::path::{Path, PathBuf};
19use std::process::Command;
20use std::time::{Duration, Instant};
21
22use anyhow::{Context, Result};
23use g1t_actions::events::WORKSPACE;
24use g1t_actions::expr::{self, Scope, Status};
25use serde_json::{Map, Value, json};
26
27use files::StepFiles;
28use process::{Commands, Ended};
29use report::{Api, Log};
30
31const TEMP: &str = "/home/runner/_temp";
32
33/// Who is running steps: the job itself, or a composite action inside it.
34#[derive(Clone, Default)]
35pub(crate) struct Frame {
36 /// The `steps` context.
37 pub(crate) steps: Map<String, Value>,
38 /// A composite action's `inputs`, in place of the workflow's.
39 pub(crate) inputs: Option<Value>,
40 /// A composite action's folder, for `github.action_path`.
41 pub(crate) action_path: Option<String>,
42 /// Variables a composite action's caller set for its steps.
43 pub(crate) env: BTreeMap<String, String>,
44}
45
46/// A step run when the job's steps are done: an action's `post`, or
47/// saving the cache.
48pub(crate) struct Post {
49 pub(crate) name: String,
50 pub(crate) condition: String,
51 pub(crate) env: BTreeMap<String, String>,
52 pub(crate) run: PostRun,
53}
54
55pub(crate) enum PostRun {
56 Node { action_dir: PathBuf, script: String },
57 CacheSave { key: String, paths: Vec<String> },
58}
59
60pub(crate) struct Job {
61 pub(crate) log: Log,
62 pub(crate) spec: Value,
63 pub(crate) workspace: PathBuf,
64 pub(crate) temp: PathBuf,
65 /// This process's own variables, less its credentials, and GitHub's.
66 base_env: BTreeMap<String, String>,
67 /// Written to `GITHUB_ENV` by earlier steps.
68 added_env: BTreeMap<String, String>,
69 /// Written to `GITHUB_PATH` by earlier steps, newest first.
70 path_prepend: Vec<String>,
71 workflow_env: BTreeMap<String, String>,
72 job_env: BTreeMap<String, String>,
73 /// github, vars, secrets, inputs, matrix, needs, strategy, runner.
74 pub(crate) contexts: Map<String, Value>,
75 pub(crate) failed: bool,
76 pub(crate) posts: Vec<Post>,
77 step_names: Vec<String>,
78 deadline: Instant,
79 debug: bool,
80 /// What the last Node process left, for the step that ran it.
81 pub(crate) last_node_outputs: BTreeMap<String, String>,
82 pub(crate) last_node_state: BTreeMap<String, String>,
83}
84
85fn text_map(value: Option<&Value>) -> BTreeMap<String, String> {
86 value
87 .and_then(Value::as_object)
88 .map(|map| map.iter().map(|(k, v)| (k.clone(), expr::to_text(v))).collect())
89 .unwrap_or_default()
90}
91
92/// A step's title when it has no name, as GitHub shows it.
93fn default_title(step: &Map<String, Value>) -> String {
94 if let Some(uses) = step.get("uses").and_then(Value::as_str) {
95 return format!("Run {uses}");
96 }
97 let run = step.get("run").map(expr::to_text).unwrap_or_default();
98 let first = run.lines().find(|line| !line.trim().is_empty()).unwrap_or_default().trim();
99 format!("Run {first}")
100}
101
102impl Job {
103 pub(crate) fn base_env_value(&self, name: &str) -> Option<String> {
104 self.base_env.get(name).cloned()
105 }
106
107 fn status(&self) -> Status {
108 if self.failed { Status::Failure } else { Status::Success }
109 }
110
111 /// The contexts an expression in a step can use.
112 pub(crate) fn contexts_for(&self, frame: &Frame, env: &BTreeMap<String, String>) -> Map<String, Value> {
113 let mut contexts = self.contexts.clone();
114 contexts.insert("env".into(), Value::Object(env.iter().map(|(k, v)| (k.clone(), Value::String(v.clone()))).collect()));
115 contexts.insert("steps".into(), Value::Object(frame.steps.clone()));
116 contexts.insert("job".into(), json!({ "status": if self.failed { "failure" } else { "success" } }));
117 if let Some(inputs) = &frame.inputs {
118 contexts.insert("inputs".into(), inputs.clone());
119 }
120 if let Some(path) = &frame.action_path
121 && let Some(github) = contexts.get_mut("github")
122 {
123 github["action_path"] = Value::String(path.clone());
124 }
125 contexts
126 }
127
128 /// Runs `f` with a scope over these contexts.
129 pub(crate) fn with_scope<T>(&self, contexts: &Map<String, Value>, f: impl FnOnce(&Scope) -> T) -> T {
130 let workspace = self.workspace.clone();
131 let hash = move |patterns: &[String]| files::hash_files(&workspace, patterns);
132 let scope = Scope {
133 contexts,
134 status: self.status(),
135 hash_files: Some(&hash),
136 };
137 f(&scope)
138 }
139
140 /// The `env` context for a step: the workflow's, the job's, what earlier
141 /// steps wrote to `GITHUB_ENV`, and the frame's.
142 fn env_context(&self, frame: &Frame) -> BTreeMap<String, String> {
143 let mut env = self.added_env.clone();
144 env.extend(self.workflow_env.clone());
145 env.extend(self.job_env.clone());
146 env.extend(frame.env.clone());
147 env
148 }
149
150 /// What a process for a step is given.
151 pub(crate) fn process_env(&self, env: &BTreeMap<String, String>, files: &StepFiles) -> BTreeMap<String, String> {
152 let mut out = self.base_env.clone();
153 out.extend(env.clone());
154 for (name, value) in files.variables() {
155 out.insert(name.to_owned(), value);
156 }
157 if !self.path_prepend.is_empty() {
158 let current = out.get("PATH").cloned().unwrap_or_default();
159 out.insert("PATH".into(), format!("{}:{current}", self.path_prepend.join(":")));
160 }
161 out
162 }
163
164 /// Takes in what a step wrote to its files. Returns its outputs.
165 pub(crate) fn absorb(&mut self, files: &StepFiles, commands: &Commands) -> (BTreeMap<String, String>, BTreeMap<String, String>) {
166 let mut outputs: BTreeMap<String, String> = commands.outputs.clone();
167 match files::key_values(&StepFiles::read(&files.output)) {
168 Ok(values) => outputs.extend(values),
169 Err(problem) => self.log.line(&format!("##[error]$GITHUB_OUTPUT: {problem}")),
170 }
171 match files::key_values(&StepFiles::read(&files.env)) {
172 Ok(values) => {
173 for (name, value) in values {
174 if name.starts_with("GITHUB_") || name == "NODE_OPTIONS" {
175 self.log.line(&format!("##[warning]{name} cannot be set through $GITHUB_ENV."));
176 continue;
177 }
178 self.added_env.insert(name, value);
179 }
180 }
181 Err(problem) => self.log.line(&format!("##[error]$GITHUB_ENV: {problem}")),
182 }
183 for line in StepFiles::read(&files.path).lines().map(str::trim).filter(|l| !l.is_empty()) {
184 self.path_prepend.insert(0, line.to_owned());
185 }
186 let mut state = commands.state.clone();
187 if let Ok(values) = files::key_values(&StepFiles::read(&files.state)) {
188 state.extend(values);
189 }
190 let summary = StepFiles::read(&files.summary);
191 if !summary.trim().is_empty() {
192 self.log.line("##[group]Step summary");
193 for line in summary.lines() {
194 self.log.line(line);
195 }
196 self.log.line("##[endgroup]");
197 }
198 (outputs, state)
199 }
200
201 pub(crate) fn remaining_time(&self) -> Duration {
202 self.remaining()
203 }
204
205 fn remaining(&self) -> Duration {
206 self.deadline.saturating_duration_since(Instant::now())
207 }
208
209 /// Runs a shell script for a `run` step.
210 pub(crate) fn run_script(
211 &mut self,
212 script: &str,
213 shell: Option<&str>,
214 working_directory: Option<&str>,
215 env: &BTreeMap<String, String>,
216 timeout: Duration,
217 ) -> (bool, BTreeMap<String, String>, BTreeMap<String, String>) {
218 crate::abuse::touch();
219 // Mining is never a workflow's job (abuse.rs).
220 if let Some(miner) = crate::abuse::miner_in(script) {
221 self.log.line(&format!("##[error]g1t does not run cryptocurrency miners ({miner}). This step was not run."));
222 return (false, BTreeMap::new(), BTreeMap::new());
223 }
224 let id = format!("{:x}", rand_id());
225 let shell = shell.map(str::trim).filter(|s| !s.is_empty());
226 let (program, args, extension): (String, Vec<String>, &str) = match shell {
227 None => ("bash".into(), vec!["-e".into(), "{0}".into()], "sh"),
228 Some("bash") => ("bash".into(), vec!["--noprofile".into(), "--norc".into(), "-eo".into(), "pipefail".into(), "{0}".into()], "sh"),
229 Some("sh") => ("sh".into(), vec!["-e".into(), "{0}".into()], "sh"),
230 Some("python") => ("python3".into(), vec!["{0}".into()], "py"),
231 Some(other @ ("pwsh" | "powershell" | "cmd")) => {
232 self.log.line(&format!("##[error]`shell: {other}` needs Windows or PowerShell, which g1t's Linux runners do not have."));
233 return (false, BTreeMap::new(), BTreeMap::new());
234 }
235 Some(custom) => {
236 let mut parts = custom.split_whitespace().map(str::to_owned);
237 let program = parts.next().unwrap_or_default();
238 let mut args: Vec<String> = parts.collect();
239 if !args.iter().any(|a| a.contains("{0}")) {
240 args.push("{0}".into());
241 }
242 (program, args, "sh")
243 }
244 };
245 let script_path = self.temp.join(format!("{id}.{extension}"));
246 if let Err(error) = std::fs::write(&script_path, script) {
247 self.log.line(&format!("##[error]Could not write the script: {error}"));
248 return (false, BTreeMap::new(), BTreeMap::new());
249 }
250 let files = match StepFiles::new(&self.temp, &id) {
251 Ok(files) => files,
252 Err(error) => {
253 self.log.line(&format!("##[error]Could not make the step's files: {error}"));
254 return (false, BTreeMap::new(), BTreeMap::new());
255 }
256 };
257 let args: Vec<String> = args.iter().map(|a| a.replace("{0}", &script_path.display().to_string())).collect();
258 self.log.line(&format!("shell: {program} {}", args.join(" ")));
259 let dir = match working_directory {
260 Some(dir) if Path::new(dir).is_absolute() => PathBuf::from(dir),
261 Some(dir) => self.workspace.join(dir),
262 None => self.workspace.clone(),
263 };
264 let mut command = Command::new(&program);
265 command.args(&args).current_dir(&dir).env_clear().envs(self.process_env(env, &files));
266 let mut commands = Commands {
267 debug: self.debug,
268 ..Commands::default()
269 };
270 let ended = process::run(command, timeout.min(self.remaining()), &mut self.log, &mut commands);
271 let ok = match ended {
272 Ok(Ended::Exited(0)) => true,
273 Ok(Ended::Exited(code)) => {
274 self.log.line(&format!("##[error]Process completed with exit code {code}."));
275 false
276 }
277 Ok(Ended::TimedOut) => {
278 self.log.line("##[error]The step ran past its time limit and was stopped.");
279 false
280 }
281 Err(error) => {
282 self.log.line(&format!("##[error]{program} could not be started: {error}"));
283 false
284 }
285 };
286 let (outputs, state) = self.absorb(&files, &commands);
287 (ok, outputs, state)
288 }
289
290 /// Runs one step of a frame. Returns whether it succeeded (its
291 /// conclusion). `number` is the step the log belongs to.
292 pub(crate) fn step(&mut self, frame: &mut Frame, step: &Map<String, Value>, number: u32, report: bool, defaults: &Map<String, Value>) -> bool {
293 let env_before = self.env_context(frame);
294 let contexts = self.contexts_for(frame, &env_before);
295 let title = match step.get("name").map(expr::to_text) {
296 Some(name) => self.with_scope(&contexts, |scope| expr::interpolate(&name, scope)).unwrap_or(name),
297 None => default_title(step),
298 };
299 let condition = step.get("if").map(expr::to_text).unwrap_or_default();
300 let run_it = match self.with_scope(&contexts, |scope| expr::condition(&condition, scope)) {
301 Ok(run_it) => run_it,
302 Err(problem) => {
303 self.log.line(&format!("##[error]The step's `if` does not read: {problem}"));
304 self.failed = true;
305 if report {
306 self.log.step_state(number, &title, "completed", Some("failure"));
307 }
308 return false;
309 }
310 };
311 let id = step.get("id").map(expr::to_text);
312 if !run_it {
313 if let Some(id) = &id {
314 frame.steps.insert(id.clone(), json!({ "outputs": {}, "outcome": "skipped", "conclusion": "skipped" }));
315 }
316 if report {
317 self.log.step_state(number, &title, "completed", Some("skipped"));
318 }
319 return true;
320 }
321 if report {
322 self.log.step(number);
323 self.log.step_state(number, &title, "in_progress", None);
324 }
325
326 // The step's own env, read with the contexts before it.
327 let mut env = env_before.clone();
328 if let Some(Value::Object(step_env)) = step.get("env") {
329 for (name, value) in step_env {
330 let value = self.with_scope(&contexts, |scope| expr::interpolate_value(value, scope)).unwrap_or(Value::Null);
331 env.insert(name.clone(), expr::to_text(&value));
332 }
333 }
334 let timeout = step
335 .get("timeout-minutes")
336 .and_then(|v| self.with_scope(&contexts, |scope| expr::interpolate_value(v, scope)).ok())
337 .and_then(|v| v.as_f64().or_else(|| expr::to_text(&v).parse().ok()))
338 .map_or(Duration::from_secs(6 * 3600), |minutes| Duration::from_secs_f64(minutes * 60.0));
339 let continue_on_error = step
340 .get("continue-on-error")
341 .and_then(|v| self.with_scope(&contexts, |scope| expr::interpolate_value(v, scope)).ok())
342 .is_some_and(|v| expr::truthy(&v));
343
344 let (ok, outputs) = if let Some(run) = step.get("run").map(expr::to_text) {
345 let script = match self.with_scope(&contexts, |scope| expr::interpolate(&run, scope)) {
346 Ok(script) => script,
347 Err(problem) => {
348 self.log.line(&format!("##[error]The script does not read: {problem}"));
349 String::new()
350 }
351 };
352 self.log.line(&format!("##[group]{title}"));
353 for line in script.lines() {
354 self.log.line(line);
355 }
356 self.log.line("##[endgroup]");
357 let shell = step
358 .get("shell")
359 .map(expr::to_text)
360 .or_else(|| defaults.get("shell").map(expr::to_text));
361 if frame.action_path.is_some() && shell.is_none() {
362 self.log.line("##[error]A composite action's `run` steps need a `shell`.");
363 (false, BTreeMap::new())
364 } else {
365 let working_directory = step
366 .get("working-directory")
367 .or_else(|| defaults.get("working-directory"))
368 .map(|v| self.with_scope(&contexts, |scope| expr::interpolate(&expr::to_text(v), scope)).unwrap_or_else(|_| expr::to_text(v)));
369 let mut env = env;
370 if let Some(path) = &frame.action_path {
371 env.insert("GITHUB_ACTION_PATH".into(), path.clone());
372 }
373 let (ok, outputs, _) = self.run_script(&script, shell.as_deref(), working_directory.as_deref(), &env, timeout);
374 (ok, outputs)
375 }
376 } else if let Some(uses) = step.get("uses").map(expr::to_text) {
377 let with: BTreeMap<String, String> = match step.get("with") {
378 Some(Value::Object(with)) => with
379 .iter()
380 .map(|(k, v)| {
381 let value = self.with_scope(&contexts, |scope| expr::interpolate_value(v, scope)).unwrap_or(Value::Null);
382 (k.clone(), expr::to_text(&value))
383 })
384 .collect(),
385 _ => BTreeMap::new(),
386 };
387 self.uses(&uses, &with, &env, frame, &title, id.as_deref(), timeout)
388 } else {
389 self.log.line("##[error]A step needs `run` or `uses`.");
390 (false, BTreeMap::new())
391 };
392
393 let outcome = if ok { "success" } else { "failure" };
394 let conclusion = if ok || continue_on_error { "success" } else { "failure" };
395 if !ok && continue_on_error {
396 self.log.line("##[warning]The step failed, and `continue-on-error` lets the job go on.");
397 }
398 if let Some(id) = &id {
399 let outputs: Map<String, Value> = outputs.iter().map(|(k, v)| (k.clone(), Value::String(v.clone()))).collect();
400 frame.steps.insert(id.clone(), json!({ "outputs": outputs, "outcome": outcome, "conclusion": conclusion }));
401 }
402 if conclusion == "failure" {
403 self.failed = true;
404 }
405 if report {
406 self.log.step_state(number, &title, "completed", Some(conclusion));
407 }
408 conclusion == "success"
409 }
410
411 fn report_steps(&self) {
412 self.log.steps(&self.step_names);
413 }
414}
415
416/// An id for files, unique enough within one job.
417fn rand_id() -> u64 {
418 use std::sync::atomic::{AtomicU64, Ordering};
419 static NEXT: AtomicU64 = AtomicU64::new(1);
420 let nanos = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).map(|d| d.as_nanos() as u64).unwrap_or(0);
421 nanos ^ (NEXT.fetch_add(1, Ordering::Relaxed) << 48)
422}
423
424fn interpolated_map(job: &Job, value: Option<&Value>, contexts: &Map<String, Value>) -> BTreeMap<String, String> {
425 let mut out = BTreeMap::new();
426 if let Some(Value::Object(map)) = value {
427 for (name, value) in map {
428 let value = job.with_scope(contexts, |scope| expr::interpolate_value(value, scope)).unwrap_or(Value::Null);
429 out.insert(name.clone(), expr::to_text(&value));
430 }
431 }
432 out
433}
434
435fn setup(spec: Value, api: Api) -> Result<Job> {
436 let masks: Vec<String> = spec["masks"].as_array().map(|m| m.iter().filter_map(|v| v.as_str().map(str::to_owned)).collect()).unwrap_or_default();
437 let log = Log::new(api, masks);
438 let workspace = PathBuf::from(WORKSPACE);
439 let temp = PathBuf::from(TEMP);
440 std::fs::create_dir_all(&workspace).context("could not make the workspace")?;
441 std::fs::create_dir_all(&temp).context("could not make the temporary folder")?;
442 std::fs::write(temp.join("event.json"), serde_json::to_string_pretty(&spec["event"])?)?;
443
444 // This process's environment, less what only it should see.
445 let mut base_env: BTreeMap<String, String> =
446 std::env::vars().filter(|(name, _)| !matches!(name.as_str(), "ACTIONS_TOKEN" | "ACTIONS_JOB" | "MODE") && !name.starts_with("G1T_")).collect();
447 base_env.insert("HOME".into(), std::env::var("HOME").unwrap_or_else(|_| "/home/node".into()));
448 base_env.extend(text_map(spec.get("variables")));
449 base_env.insert("GITHUB_EVENT_PATH".into(), temp.join("event.json").display().to_string());
450
451 let mut contexts: Map<String, Value> = spec["contexts"].as_object().cloned().unwrap_or_default();
452 contexts.insert("github".into(), spec["github"].clone());
453 let debug = contexts
454 .get("secrets")
455 .and_then(|s| s.get("ACTIONS_STEP_DEBUG"))
456 .or_else(|| contexts.get("vars").and_then(|v| v.get("ACTIONS_STEP_DEBUG")))
457 .is_some_and(|v| expr::to_text(v) == "true");
458
459 // `timeoutMinutes` is how the API spelled it before its bodies were
460 // `snake_case`.
461 let timeout = spec["timeout_minutes"]
462 .as_u64()
463 .or_else(|| spec["timeoutMinutes"].as_u64())
464 .unwrap_or(60);
465 let mut job = Job {
466 log,
467 spec,
468 workspace,
469 temp,
470 base_env,
471 added_env: BTreeMap::new(),
472 path_prepend: Vec::new(),
473 workflow_env: BTreeMap::new(),
474 job_env: BTreeMap::new(),
475 contexts,
476 failed: false,
477 posts: Vec::new(),
478 step_names: Vec::new(),
479 deadline: Instant::now() + Duration::from_secs(timeout * 60),
480 debug,
481 last_node_outputs: BTreeMap::new(),
482 last_node_state: BTreeMap::new(),
483 };
484
485 // The workflow's env reads github, secrets, inputs and vars; the job's
486 // also its matrix, needs and strategy.
487 let mut contexts = job.contexts.clone();
488 contexts.insert("env".into(), json!({}));
489 job.workflow_env = interpolated_map(&job, job.spec["workflow"].get("env"), &contexts);
490 contexts.insert("env".into(), Value::Object(job.workflow_env.iter().map(|(k, v)| (k.clone(), json!(v))).collect()));
491 job.job_env = interpolated_map(&job, job.spec["spec"].get("env"), &contexts);
492 Ok(job)
493}
494
495/// The job's `defaults.run`, its own over the workflow's.
496fn run_defaults(spec: &Value) -> Map<String, Value> {
497 let mut defaults = spec["workflow"]["defaults"]["run"].as_object().cloned().unwrap_or_default();
498 if let Some(own) = spec["spec"]["defaults"]["run"].as_object() {
499 defaults.extend(own.clone());
500 }
501 defaults
502}
503
504fn run_job(job: &mut Job) {
505 let steps: Vec<Map<String, Value>> = job.spec["spec"]["steps"]
506 .as_array()
507 .map(|steps| steps.iter().filter_map(|s| s.as_object().cloned()).collect())
508 .unwrap_or_default();
509 let defaults = run_defaults(&job.spec);
510
511 // Step names as they read before anything has run.
512 let frame = Frame::default();
513 let env = job.env_context(&frame);
514 let contexts = job.contexts_for(&frame, &env);
515 job.step_names = steps
516 .iter()
517 .map(|step| match step.get("name").map(expr::to_text) {
518 Some(name) => job.with_scope(&contexts, |scope| expr::interpolate(&name, scope)).unwrap_or(name),
519 None => default_title(step),
520 })
521 .collect();
522 job.report_steps();
523
524 job.log.step(0);
525 job.log.line(&format!("Job: {}", job.spec["name"].as_str().unwrap_or_default()));
526 job.log.line("Runner: g1t, Linux X64 (Debian bookworm, Node 24, Python 3, Go, Rust)");
527 if let Some(Value::Object(matrix)) = job.contexts.get("matrix")
528 && !matrix.is_empty()
529 {
530 job.log.line(&format!("Matrix: {}", serde_json::to_string(matrix).unwrap_or_default()));
531 }
532 job.log.flush();
533
534 let mut frame = Frame::default();
535 for (index, step) in steps.iter().enumerate() {
536 job.step(&mut frame, step, index as u32 + 1, true, &defaults);
537 if job.remaining().is_zero() {
538 job.log.line("##[error]The job ran past its time limit.");
539 job.failed = true;
540 break;
541 }
542 }
543
544 // Post steps, last registered first.
545 let posts: Vec<Post> = std::mem::take(&mut job.posts);
546 for post in posts.into_iter().rev() {
547 let number = job.step_names.len() as u32 + 1;
548 job.step_names.push(post.name.clone());
549 job.report_steps();
550 let contexts = job.contexts_for(&frame, &job.env_context(&frame));
551 let run_it = job.with_scope(&contexts, |scope| expr::condition(&post.condition, scope)).unwrap_or(true);
552 if !run_it {
553 job.log.step_state(number, &post.name, "completed", Some("skipped"));
554 continue;
555 }
556 job.log.step(number);
557 job.log.step_state(number, &post.name, "in_progress", None);
558 let ok = match &post.run {
559 PostRun::Node { action_dir, script } => job.run_node(action_dir, script, &post.env),
560 PostRun::CacheSave { key, paths } => job.cache_save(key, paths),
561 };
562 job.log.step_state(number, &post.name, "completed", Some(if ok { "success" } else { "failure" }));
563 if !ok {
564 job.failed = true;
565 }
566 }
567
568 // The job's outputs, read now that every step has run.
569 let env = job.env_context(&frame);
570 let contexts = job.contexts_for(&frame, &env);
571 let mut outputs = Map::new();
572 if let Some(Value::Object(declared)) = job.spec["spec"].get("outputs") {
573 for (name, value) in declared {
574 let value = job.with_scope(&contexts, |scope| expr::interpolate_value(value, scope)).unwrap_or(Value::Null);
575 outputs.insert(name.clone(), Value::String(expr::to_text(&value)));
576 }
577 }
578 let conclusion = if job.failed { "failure" } else { "success" };
579 job.log.done(conclusion, &outputs, None);
580}
581
582pub(crate) fn main() -> i32 {
583 let api = match (crate::env("G1T_API"), crate::env("ACTIONS_JOB"), crate::env("ACTIONS_TOKEN")) {
584 (Ok(base), Ok(job), Ok(token)) => Api { base, job, token },
585 _ => {
586 eprintln!("g1t-runner: G1T_API, ACTIONS_JOB and ACTIONS_TOKEN are needed");
587 return 2;
588 }
589 };
590 let spec = match api.spec() {
591 Ok(spec) => spec,
592 Err(error) => {
593 eprintln!("g1t-runner: could not fetch the job: {error:#}");
594 api.report(json!({ "kind": "done", "conclusion": "failure", "reason": format!("The runner could not fetch the job: {error}") }));
595 return 1;
596 }
597 };
598 let reporter = Api {
599 base: api.base.clone(),
600 job: api.job.clone(),
601 token: api.token.clone(),
602 };
603 let mut job = match setup(spec, reporter) {
604 Ok(job) => job,
605 Err(error) => {
606 api.report(json!({ "kind": "done", "conclusion": "failure", "reason": format!("The runner could not set up: {error:#}") }));
607 return 1;
608 }
609 };
610 run_job(&mut job);
611 if job.failed { 1 } else { 0 }
612}