g1t/services/actions/src/trigger.rs
//! What starts a run: an event on the bus, a schedule, or someone running a
//! workflow by hand. Each finds the workflows that want it, at the commit
//! the event is about, and checks their filters.
use g1t_actions::events::{RunInfo, github_events};
use g1t_actions::workflow::{self, Trigger, Workflow};
use g1t_contracts::access::{self, Capability};
use g1t_contracts::actions::{DispatchArgs, WorkflowRun};
use g1t_contracts::events::Event;
use g1t_contracts::identity::{AGENT_ID, AGENT_NAME, UsernamesArgs};
use g1t_contracts::repos::{Commit, CompareArgs, Comparison, LogArgs, Repo, RepoPath};
use g1t_contracts::work::{IssueDetail, PullDetail, ViewArgs};
use g1t_contracts::{FailureCode, Outcome, User, new_id};
use g1t_kit::now_ms;
use serde_json::{Map, Value, json};
use worker::Result;
use crate::plan::NewRun;
use crate::sync::{Read, WorkflowRow};
use crate::{API, Actions, SITE, check, fail, payload};
/// What an event is about, worked out once for every workflow it starts.
struct Subject {
/// Where the workflow files are read, and at which commit.
source: RepoPath,
source_ref: Option<String>,
git_ref: String,
sha: String,
head_ref: Option<String>,
base_ref: Option<String>,
pull: Option<u32>,
/// The branch or tag for `branches`/`tags` filters; for pull requests,
/// the branch they merge into.
filter_ref: String,
/// The files it changes, for `paths` filters; `None` until needed.
paths: Option<Vec<String>>,
/// For a push, what to compare to find the files.
compare: Option<(Option<String>, String)>,
payload: Value,
title: String,
trusted: bool,
}
impl Actions {
async fn username(&self, id: Option<&str>) -> Result<Option<String>> {
let Some(id) = id else { return Ok(None) };
if id == AGENT_ID {
return Ok(Some(AGENT_NAME.to_owned()));
}
let names: std::collections::HashMap<String, String> =
g1t_kit::call(&self.identity, "usernames", &UsernamesArgs { ids: vec![id.to_owned()] }).await?;
Ok(names.get(id).cloned())
}
/// Whether a pull request's author could push to the repository, so
/// its runs get the secrets and a token. Anyone else's, a reader's
/// included (who may open one on a private repository too), runs
/// without them.
async fn insider(&self, author: &User, repo: &Repo, ws: &User) -> Result<bool> {
if author.id == AGENT_ID || access::can(Some(author), repo, Capability::Push) {
return Ok(true);
}
// Stored authors carry no memberships or grants: ask identity, as
// the workspace (which may see anyone's permission).
let permission: Outcome<access::PermissionInfo> = g1t_kit::call(
&self.identity,
"collaborator_permission",
&access::CollaboratorPermissionArgs {
viewer: Some(ws.clone()),
path: RepoPath { namespace: repo.namespace.clone(), name: repo.name.clone() },
username: author.username.clone(),
},
)
.await?;
Ok(permission
.into_result()
.ok()
.and_then(|info| info.role)
.is_some_and(|role| access::allows(role, Capability::Push)))
}
async fn commits(&self, repo: &Repo, actor: &User, after: &str, before: Option<&str>) -> Result<Vec<Commit>> {
let log: Outcome<Vec<Commit>> = g1t_kit::call(
&self.repos,
"log",
&LogArgs {
path: RepoPath {
namespace: repo.namespace.clone(),
name: repo.name.clone(),
},
viewer: Some(actor.clone()),
git_ref: Some(after.to_owned()),
limit: 20,
},
)
.await?;
let mut commits: Vec<Commit> = log.into_result().unwrap_or_default();
if let Some(before) = before
&& let Some(at) = commits.iter().position(|commit| commit.hash == before)
{
commits.truncate(at);
}
// GitHub lists them oldest first, with the head commit last.
commits.reverse();
Ok(commits)
}
async fn changed_paths(&self, repo: &Repo, actor: &User, base: Option<String>, head: String) -> Result<Vec<String>> {
let compared: Outcome<Comparison> = g1t_kit::call(
&self.repos,
"compare",
&CompareArgs {
repo_id: repo.id.clone(),
viewer: Some(actor.clone()),
base,
head: Some(head),
},
)
.await?;
Ok(compared.into_result().map(|c| c.files.into_iter().map(|f| f.path).collect()).unwrap_or_default())
}
async fn default_head(&self, repo: &Repo) -> Result<Option<String>> {
g1t_kit::call(
&self.repos,
"head",
&g1t_contracts::repos::HeadArgs {
repo_id: repo.id.clone(),
branch: repo.default_branch.clone(),
},
)
.await
}
fn repo_path(repo: &Repo) -> RepoPath {
RepoPath {
namespace: repo.namespace.clone(),
name: repo.name.clone(),
}
}
/// The subject of an event of `kind`, as GitHub's `event_name`.
async fn subject(&self, event: &Event, event_name: &str, action: Option<&str>, repo: &Repo, ws: &User, sender: &str) -> Result<Option<Subject>> {
let path = Self::repo_path(repo);
let data = &event.data;
let on_default = |sha: String, payload: Value, title: String, pull: Option<u32>| Subject {
source: path.clone(),
source_ref: None,
git_ref: format!("refs/heads/{}", repo.default_branch),
sha,
head_ref: None,
base_ref: None,
pull,
filter_ref: format!("refs/heads/{}", repo.default_branch),
paths: None,
compare: None,
payload,
title,
trusted: true,
};
let view = |number: u32| ViewArgs {
repo: path.clone(),
number,
viewer: Some(ws.clone()),
after_seq: 0,
};
Ok(match event_name {
"push" => {
let (Some(git_ref), Some(after)) = (data["ref"].as_str(), data["after"].as_str()) else {
return Ok(None);
};
// The merge queue's states run merge_group workflows, not push ones.
if git_ref.starts_with("refs/heads/g1t-queue/") {
return Ok(None);
}
let before = data["before"].as_str();
let commits = self.commits(repo, ws, after, before).await?;
let title = commits.last().map(|c| c.message.lines().next().unwrap_or_default().to_owned()).unwrap_or_default();
let mut payload = payload::push(repo, git_ref, before, after, &commits, sender);
if let Some(head) = commits.last() {
payload["head_commit"] = payload::commit(repo, head);
}
Some(Subject {
source: path.clone(),
source_ref: Some(after.to_owned()),
git_ref: git_ref.to_owned(),
sha: after.to_owned(),
head_ref: None,
base_ref: None,
pull: None,
filter_ref: git_ref.to_owned(),
paths: None,
compare: Some((before.map(str::to_owned), after.to_owned())),
payload,
title,
trusted: true,
})
}
"pull_request" | "pull_request_target" | "pull_request_review" => {
let Some(number) = data["number"].as_u64().map(|n| n as u32) else { return Ok(None) };
let detail: Outcome<PullDetail> = g1t_kit::call(&self.work, "get_pull", &view(number)).await?;
let Outcome::Ok(detail) = detail else { return Ok(None) };
let pull = &detail.pull;
let labels = detail.issue.as_ref().map(|i| i.labels.clone()).unwrap_or_default();
let mut payload = json!({
"action": action,
"number": pull.number,
"pull_request": payload::pull(repo, pull, &labels),
"repository": payload::repository(repo),
"sender": payload::user(sender),
});
if event_name == "pull_request_review" {
let review = detail.comments.iter().rev().find(|c| c.verdict.is_some());
payload["review"] = json!({
"state": review.and_then(|r| r.verdict).map(|v| format!("{v:?}").to_lowercase()),
"body": review.map(|r| r.body.clone()),
"user": review.map(|r| payload::user(&r.author.username)),
});
}
let trusted = self.insider(&pull.author, repo, ws).await?;
let head_ref = payload::head_ref(pull);
if event_name == "pull_request_target" {
// In the base's context: its workflows, its head.
let Some(sha) = self.default_head(repo).await? else { return Ok(None) };
let mut subject = on_default(sha, payload, pull.title.clone(), Some(pull.number));
subject.head_ref = Some(head_ref);
subject.base_ref = Some(repo.default_branch.clone());
subject.paths = Some(pull.files.iter().map(|f| f.path.clone()).collect());
return Ok(Some(subject));
}
// A merged pull request's run is on the commit it landed as,
// in the repository; otherwise on its head, where that is.
let landed = match (action, data["commit"].as_str()) {
(Some("closed"), Some(commit)) => Some(commit.to_owned()),
_ => None,
};
let sha = match (&landed, data["commit"].as_str(), &pull.head_commit) {
(Some(commit), _, _) => commit.clone(),
(None, Some(commit), _) => commit.to_owned(),
(None, None, Some(head)) => head.clone(),
(None, None, None) => return Ok(None),
};
let source = match landed {
Some(_) => path.clone(),
None => pull.fork.clone().unwrap_or_else(|| path.clone()),
};
Some(Subject {
source,
source_ref: Some(sha.clone()),
git_ref: format!("refs/pull/{}/merge", pull.number),
sha,
head_ref: Some(head_ref),
base_ref: Some(repo.default_branch.clone()),
pull: Some(pull.number),
filter_ref: format!("refs/heads/{}", repo.default_branch),
paths: Some(pull.files.iter().map(|f| f.path.clone()).collect()),
compare: None,
payload,
title: pull.title.clone(),
trusted,
})
}
"workflow_run" => {
// A run of a workflow_run workflow does not start another,
// so two such workflows cannot set each other off.
if data["event"].as_str() == Some("workflow_run") {
return Ok(None);
}
let Some(sha) = self.default_head(repo).await? else { return Ok(None) };
let head_branch = data["ref"].as_str().unwrap_or_default().trim_start_matches("refs/heads/").to_owned();
let name = data["workflow"].as_str().unwrap_or_default();
let payload = json!({
"action": "completed",
"workflow_run": {
"id": data["runId"],
"name": name,
"path": data["path"],
"event": data["event"],
"status": "completed",
"conclusion": data["conclusion"],
"head_sha": data["sha"],
"head_branch": head_branch,
"run_number": data["number"],
"html_url": format!("{SITE}/{}/{}/actions/runs/{}", repo.namespace, repo.name, data["runId"].as_str().unwrap_or_default()),
"pull_requests": data["pull"].as_u64().map(|n| vec![json!({ "number": n })]).unwrap_or_default(),
},
"workflow": { "name": name, "path": data["path"] },
"repository": payload::repository(repo),
"sender": payload::user(sender),
});
let mut subject = on_default(sha, payload, format!("After {name}"), None);
// Branch filters apply to the branch the followed run was on.
subject.filter_ref = format!("refs/heads/{head_branch}");
Some(subject)
}
"issues" | "issue_comment" => {
let Some(number) = data["number"].as_u64().map(|n| n as u32) else { return Ok(None) };
let Some(sha) = self.default_head(repo).await? else { return Ok(None) };
let issue: Outcome<IssueDetail> = g1t_kit::call(&self.work, "get_issue", &view(number)).await?;
let (issue_json, comments, title, on_pull) = match issue {
Outcome::Ok(detail) => (payload::issue(repo, &detail.issue), detail.comments, detail.issue.title.clone(), false),
Outcome::Fail(_) => {
let pull: Outcome<PullDetail> = g1t_kit::call(&self.work, "get_pull", &view(number)).await?;
let Outcome::Ok(detail) = pull else { return Ok(None) };
let labels = detail.issue.as_ref().map(|i| i.labels.clone()).unwrap_or_default();
(payload::pull_as_issue(repo, &detail.pull, &labels), detail.comments, detail.pull.title.clone(), true)
}
};
let mut payload = json!({
"action": action,
"issue": issue_json,
"repository": payload::repository(repo),
"sender": payload::user(sender),
});
if event_name == "issue_comment" {
let comment_id = data["commentId"].as_str();
let comment = comments.iter().find(|c| Some(c.id.as_str()) == comment_id).or(comments.last());
match comment {
Some(comment) => payload["comment"] = payload::comment(repo, number, comment, on_pull),
None => return Ok(None),
}
}
Some(on_default(sha, payload, title, on_pull.then_some(number)))
}
_ => None,
})
}
pub async fn on_event(&self, event: &Event) -> Result<()> {
let Some(repo_id) = event.repo_id.as_deref() else { return Ok(()) };
let mapped = github_events(&event.kind);
let pushed_default = event.kind == "git.push" && event.data["defaultBranch"].as_bool() == Some(true);
if mapped.is_empty() && !pushed_default {
return Ok(());
}
let Some((repo, ws)) = self.repo_by_id(repo_id).await? else { return Ok(()) };
if pushed_default {
self.sync(&repo, &ws).await?;
}
let sender = self.username(event.actor.as_deref()).await?.unwrap_or_else(|| repo.namespace.clone());
for (event_name, action) in mapped {
let Some(mut subject) = self.subject(event, event_name, action, &repo, &ws, &sender).await? else {
continue;
};
let read = self.read_workflows(&subject.source, &ws, subject.source_ref.as_deref()).await?;
// A pull request's head runs each workflow once, however many
// events say it is there (marked ready, and pushed).
let key = match subject.pull {
Some(number) if event_name.starts_with("pull_request") && event_name != "pull_request_review" => {
let phase = if action == Some("closed") { "closed" } else { "open" };
format!("{event_name}:{number}:{}:{phase}", subject.sha)
}
_ => event.id.clone(),
};
self.start_matching(&repo, &ws, read, &mut subject, event_name, action, &key, event.actor.as_deref(), &sender)
.await?;
}
Ok(())
}
#[allow(clippy::too_many_arguments)]
async fn start_matching(
&self,
repo: &Repo,
ws: &User,
read: Read,
subject: &mut Subject,
event_name: &str,
action: Option<&str>,
event_key: &str,
actor_id: Option<&str>,
sender: &str,
) -> Result<()> {
for file in read.files {
let parsed = workflow::parse(&file.source);
let workflow = match parsed {
Ok(workflow) => workflow,
Err(problem) => {
// A push shows a broken workflow as a failed run, as GitHub does.
if event_name == "push" && file.source.contains("on") {
self.record_invalid(repo, &file.path, &file.source, subject, event_key, actor_id, sender, &problem)
.await?;
}
continue;
}
};
let Some(trigger) = workflow.trigger(event_name) else { continue };
// workflow_run follows the workflows it names.
if event_name == "workflow_run" {
let followed = subject.payload["workflow_run"]["name"].as_str().unwrap_or_default();
if !trigger.workflows.iter().any(|name| name == followed) {
continue;
}
}
if !trigger.wants_type(action) || !self.passes(repo, ws, trigger, subject, event_name).await? {
continue;
}
if self.disabled(&repo.id, &file.path).await? {
continue;
}
self.create_run(NewRun {
repo: repo.clone(),
path: file.path,
source: file.source,
info: self.run_info(repo, &workflow, event_name, subject, sender, actor_id),
workflow,
action: action.map(str::to_owned),
pull: subject.pull,
title: subject.title.clone(),
inputs: Map::new(),
event_key: event_key.to_owned(),
actor_id: actor_id.map(str::to_owned),
actor: Some(sender.to_owned()),
trusted: subject.trusted,
})
.await?;
}
Ok(())
}
/// Whether the branch, tag and path filters let the event through.
async fn passes(&self, repo: &Repo, ws: &User, trigger: &Trigger, subject: &mut Subject, event_name: &str) -> Result<bool> {
let git_ref = subject.filter_ref.as_str();
if let Some(tag) = git_ref.strip_prefix("refs/tags/") {
// A tag push runs a workflow that filters tags, or filters nothing.
if trigger.tags.is_set() {
if !trigger.tags.allows(tag) {
return Ok(false);
}
} else if trigger.branches.is_set() {
return Ok(false);
}
// Paths are not checked for tags, as on GitHub.
return Ok(true);
}
let branch = git_ref.strip_prefix("refs/heads/").unwrap_or(git_ref);
if trigger.branches.is_set() {
if !trigger.branches.allows(branch) {
return Ok(false);
}
} else if event_name == "push" && trigger.tags.is_set() {
return Ok(false);
}
if trigger.paths.is_set() {
if subject.paths.is_none() {
let (base, head) = subject.compare.clone().unwrap_or((None, subject.sha.clone()));
subject.paths = Some(self.changed_paths(repo, ws, base, head).await?);
}
if !trigger.paths.allows_paths(subject.paths.as_deref().unwrap_or_default()) {
return Ok(false);
}
}
Ok(true)
}
async fn disabled(&self, repo_id: &str, path: &str) -> Result<bool> {
let row = self
.db
.prepare("SELECT * FROM workflows WHERE repo_id = ? AND path = ?")
.bind(&[repo_id.into(), path.into()])?
.first::<WorkflowRow>(None)
.await?;
Ok(row.is_some_and(|row| row.state == "disabled"))
}
fn run_info(&self, repo: &Repo, workflow: &Workflow, event_name: &str, subject: &Subject, sender: &str, actor_id: Option<&str>) -> RunInfo {
RunInfo {
repository: format!("{}/{}", repo.namespace, repo.name),
repository_id: repo.id.clone(),
default_branch: repo.default_branch.clone(),
event_name: event_name.to_owned(),
event: subject.payload.clone(),
git_ref: subject.git_ref.clone(),
sha: subject.sha.clone(),
head_ref: subject.head_ref.clone(),
base_ref: subject.base_ref.clone(),
actor: sender.to_owned(),
actor_id: actor_id.unwrap_or_default().to_owned(),
triggering_actor: sender.to_owned(),
run_id: String::new(),
run_number: 0,
run_attempt: 1,
workflow: workflow.name.clone().unwrap_or_default(),
workflow_path: String::new(),
server_url: SITE.to_owned(),
api_url: API.to_owned(),
}
}
#[allow(clippy::too_many_arguments)]
async fn record_invalid(
&self,
repo: &Repo,
path: &str,
source: &str,
subject: &Subject,
event_key: &str,
actor_id: Option<&str>,
sender: &str,
problem: &str,
) -> Result<()> {
let row = self.workflow_row(repo, path, path, source).await?;
self.record_failed_run(&row, subject.git_ref.as_str(), &subject.sha, event_key, actor_id, sender, problem).await
}
/// Scheduled workflows whose cron fires this minute, on the default branch.
pub async fn run_schedules(&self, minute: u64) -> Result<()> {
let rows = self
.db
.prepare("SELECT * FROM workflows WHERE state = 'active' AND crons != '[]' AND error IS NULL")
.all()
.await?
.results::<WorkflowRow>()?;
for row in rows {
let crons: Vec<String> = serde_json::from_str(&row.crons).unwrap_or_default();
let Some(cron) = crons.iter().find(|cron| g1t_actions::cron::Schedule::parse(cron).is_ok_and(|s| s.fires_at(minute))) else {
continue;
};
let Ok(workflow) = workflow::parse(&row.source) else { continue };
// Schedules wait while a repository is archived; a deleted one is not found.
let Some((repo, _ws)) = self.repo_by_id(&row.repo_id).await?.filter(|(repo, _)| !repo.archived()) else { continue };
let Some(sha) = self.default_head(&repo).await? else { continue };
let payload = json!({ "schedule": cron, "repository": payload::repository(&repo), "workflow": row.path });
let mut subject = Subject {
source: Self::repo_path(&repo),
source_ref: None,
git_ref: format!("refs/heads/{}", repo.default_branch),
sha,
head_ref: None,
base_ref: None,
pull: None,
filter_ref: String::new(),
paths: None,
compare: None,
payload,
title: format!("Scheduled: {cron}"),
trusted: true,
};
subject.filter_ref = subject.git_ref.clone();
let info = self.run_info(&repo, &workflow, "schedule", &subject, &repo.namespace, None);
self.create_run(NewRun {
repo: repo.clone(),
path: row.path.clone(),
source: row.source.clone(),
workflow,
info,
action: None,
pull: None,
title: subject.title.clone(),
inputs: Map::new(),
event_key: format!("schedule:{minute}"),
actor_id: None,
actor: None,
trusted: true,
})
.await?;
}
Ok(())
}
/// `dispatch`: someone with the Write role runs a workflow that has
/// `workflow_dispatch`.
pub async fn dispatch(&self, a: DispatchArgs) -> Result<Outcome<WorkflowRun>> {
let repo = check!(self.may(&a.actor, &a.repo, Capability::Run).await?);
if repo.archived() {
return Ok(fail(FailureCode::Forbidden, g1t_contracts::repos::archived_message(&repo.namespace, &repo.name)));
}
let Some(ws) = self.workspace_actor(&repo.namespace).await? else {
return Ok(fail(FailureCode::NotFound, "There is no such workspace."));
};
let git_ref = a.git_ref.clone().unwrap_or_else(|| repo.default_branch.clone());
let full_ref = if git_ref.starts_with("refs/") {
git_ref.clone()
} else {
// A branch if there is one by that name, otherwise a tag.
let branches: Outcome<Vec<g1t_contracts::repos::Branch>> = g1t_kit::call(
&self.repos,
"branches",
&g1t_contracts::repos::BranchesArgs {
path: Self::repo_path(&repo),
viewer: Some(ws.clone()),
},
)
.await?;
let is_branch = branches.into_result().unwrap_or_default().iter().any(|branch| branch.name == git_ref);
format!("refs/{}/{git_ref}", if is_branch { "heads" } else { "tags" })
};
let short = full_ref.trim_start_matches("refs/heads/").trim_start_matches("refs/tags/").to_owned();
let read = self.read_workflows(&Self::repo_path(&repo), &ws, Some(&short)).await?;
let Some(sha) = read.head.clone() else {
return Ok(fail(FailureCode::NotFound, format!("There is no branch or tag called {short}.")));
};
// A workflow is named by its file (`build.yml`), its path, or its id
// (`wfl_…`), which stands for the path it was read from.
let by_id = if a.workflow.starts_with("wfl_") {
self.db
.prepare("SELECT * FROM workflows WHERE repo_id = ? AND id = ?")
.bind(&[repo.id.as_str().into(), a.workflow.as_str().into()])?
.first::<WorkflowRow>(None)
.await?
.map(|row| row.path)
} else {
None
};
let named = by_id.as_deref().unwrap_or(&a.workflow);
let wanted = named.trim_start_matches(".g1t/workflows/");
let Some(file) = read.files.iter().find(|file| {
file.path.rsplit('/').next() == Some(wanted) || file.path == named
}) else {
return Ok(fail(FailureCode::NotFound, format!("There is no workflow {wanted} on {short}.")));
};
let workflow = match workflow::parse(&file.source) {
Ok(workflow) => workflow,
Err(problem) => return Ok(fail(FailureCode::Invalid, format!("The workflow does not read: {problem}"))),
};
let Some(trigger) = workflow.trigger("workflow_dispatch") else {
return Ok(fail(FailureCode::Invalid, "That workflow cannot be run by hand: it has no `workflow_dispatch` trigger."));
};
let inputs = check!(dispatch_inputs(trigger, &a.inputs));
let payload = json!({
"inputs": inputs,
"ref": full_ref,
"repository": payload::repository(&repo),
"sender": payload::user(&a.actor.username),
"workflow": file.path,
});
let subject = Subject {
source: Self::repo_path(&repo),
source_ref: Some(sha.clone()),
git_ref: full_ref.clone(),
sha,
head_ref: None,
base_ref: None,
pull: None,
filter_ref: full_ref,
paths: None,
compare: None,
payload,
title: format!("{} run by {}", workflow.display_name(&file.path), a.actor.username),
trusted: true,
};
let info = self.run_info(&repo, &workflow, "workflow_dispatch", &subject, &a.actor.username, Some(&a.actor.id));
let created = self
.create_run(NewRun {
repo: repo.clone(),
path: file.path.clone(),
source: file.source.clone(),
workflow,
info,
action: None,
pull: None,
title: subject.title.clone(),
inputs,
event_key: format!("dispatch:{}", new_id("dsp", now_ms())),
actor_id: Some(a.actor.id.clone()),
actor: Some(a.actor.username.clone()),
trusted: true,
})
.await?;
match created {
Some(id) => self.run_summary(&id).await,
None => Ok(fail(FailureCode::Conflict, "It did not start.")),
}
}
}
#[derive(serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct MergeGroupArgs {
pub repo_id: String,
pub entry: String,
pub sha: String,
pub head_ref: String,
#[serde(default)]
pub base_sha: Option<String>,
pub number: u32,
#[serde(default)]
pub ahead: Vec<u32>,
}
impl Actions {
/// `merge_group`: the merge queue built a state and its checks passed.
/// Starts the workflows that run `on: merge_group` on it, as GitHub's
/// queue does, and says how many started; the queue waits for their
/// statuses on that commit.
pub async fn merge_group(&self, a: MergeGroupArgs) -> Result<Outcome<Value>> {
let Some((repo, ws)) = self.repo_by_id(&a.repo_id).await? else {
return Ok(Outcome::Ok(json!({ "runs": 0 })));
};
let read = self.read_workflows(&Self::repo_path(&repo), &ws, Some(&a.sha)).await?;
let head_commit = self.commits(&repo, &ws, &a.sha, None).await?.pop();
let payload = json!({
"action": "checks_requested",
"merge_group": {
"head_sha": a.sha,
"head_ref": a.head_ref,
"base_sha": a.base_sha,
"base_ref": format!("refs/heads/{}", repo.default_branch),
"head_commit": head_commit.as_ref().map(|c| payload::commit(&repo, c)),
},
"repository": payload::repository(&repo),
"sender": payload::user(&repo.namespace),
});
let mut started = 0u32;
for file in read.files {
let Ok(workflow) = workflow::parse(&file.source) else { continue };
let Some(trigger) = workflow.trigger("merge_group") else { continue };
if !trigger.wants_type(Some("checks_requested")) || self.disabled(&repo.id, &file.path).await? {
continue;
}
// Branch filters on merge_group name the branch it merges into.
if trigger.branches.is_set() && !trigger.branches.allows(&repo.default_branch) {
continue;
}
let ahead = if a.ahead.is_empty() {
String::new()
} else {
format!(" after {}", a.ahead.iter().map(|n| format!("#{n}")).collect::<Vec<_>>().join(", "))
};
let subject = Subject {
source: Self::repo_path(&repo),
source_ref: Some(a.sha.clone()),
git_ref: a.head_ref.clone(),
sha: a.sha.clone(),
head_ref: None,
base_ref: Some(repo.default_branch.clone()),
pull: Some(a.number),
filter_ref: format!("refs/heads/{}", repo.default_branch),
paths: None,
compare: None,
payload: payload.clone(),
title: format!("Merge queue: #{}{ahead}", a.number),
trusted: true,
};
let info = self.run_info(&repo, &workflow, "merge_group", &subject, &repo.namespace, None);
let created = self
.create_run(NewRun {
repo: repo.clone(),
path: file.path.clone(),
source: file.source.clone(),
workflow,
info,
action: Some("checks_requested".to_owned()),
pull: Some(a.number),
title: subject.title.clone(),
inputs: Map::new(),
event_key: format!("merge_group:{}:{}", a.entry, a.sha),
actor_id: None,
actor: None,
trusted: true,
})
.await?;
if created.is_some() {
started += 1;
}
}
Ok(Outcome::Ok(json!({ "runs": started })))
}
}
/// The inputs of a manual run: what was given, checked against the
/// workflow's declared inputs, with their defaults filled in.
fn dispatch_inputs(trigger: &Trigger, given: &Map<String, Value>) -> Outcome<Map<String, Value>> {
let mut inputs = Map::new();
for (name, spec) in &trigger.inputs {
let kind = spec.get("type").and_then(Value::as_str).unwrap_or("string");
let value = given.get(name).cloned().or_else(|| spec.get("default").cloned());
let required = spec.get("required").and_then(Value::as_bool).unwrap_or(false);
let value = match value {
Some(Value::Null) | None if required => return fail(FailureCode::Invalid, format!("The input `{name}` is required.")),
Some(Value::Null) | None => match kind {
"boolean" => Value::Bool(false),
_ => Value::String(String::new()),
},
Some(value) => match kind {
"boolean" => Value::Bool(match &value {
Value::Bool(flag) => *flag,
Value::String(text) => text == "true",
_ => false,
}),
"number" => match &value {
Value::Number(_) => value,
Value::String(text) => match text.parse::<f64>().ok().and_then(serde_json::Number::from_f64) {
Some(number) => Value::Number(number),
None => return fail(FailureCode::Invalid, format!("The input `{name}` is a number.")),
},
_ => return fail(FailureCode::Invalid, format!("The input `{name}` is a number.")),
},
"choice" => {
let text = g1t_actions::expr::to_text(&value);
let options: Vec<String> =
spec.get("options").and_then(Value::as_array).map(|o| o.iter().map(g1t_actions::expr::to_text).collect()).unwrap_or_default();
if !options.is_empty() && !options.contains(&text) {
return fail(FailureCode::Invalid, format!("The input `{name}` is one of {}.", options.join(", ")));
}
Value::String(text)
}
_ => Value::String(g1t_actions::expr::to_text(&value)),
},
};
inputs.insert(name.clone(), value);
}
Outcome::Ok(inputs)
}