git-next/crates/server-actor/src/lib.rs
Paul Campbell 717cc8b0bc
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refactor: update macro signatures and add documentation support
2024-06-29 18:26:19 +01:00

247 lines
8.5 KiB
Rust

//
use actix::prelude::*;
use git_next_actor_macros::message;
use git_next_config as config;
use git_next_config::server::{ServerConfig, ServerStorage, Webhook};
use git_next_config::{ForgeAlias, ForgeConfig, GitDir, RepoAlias, ServerRepoConfig};
use git_next_file_watcher_actor::FileUpdated;
use git_next_git::{repository::RepositoryFactory, Generation, RepoDetails};
use git_next_repo_actor::{messages::CloneRepo, RepoActor};
use git_next_webhook_actor as webhook;
use kxio::{fs::FileSystem, network::Network};
use std::path::PathBuf;
use tracing::{error, info, warn};
use webhook::{AddWebhookRecipient, ShutdownWebhook, WebhookActor, WebhookRouter};
message!(ReceiveServerConfig: ServerConfig: "Notification of newly loaded server configuration.
This message will prompt the `git-next` server to stop and restart all repo-actors.
Contains the new server configuration.");
#[derive(Debug, derive_more::Display, derive_more::From)]
pub enum Error {
#[display("Failed to create data directories")]
FailedToCreateDataDirectory(kxio::fs::Error),
#[display("The forge data path is not a directory: {path:?}")]
ForgeDirIsNotDirectory {
path: PathBuf,
},
Config(config::server::Error),
Io(std::io::Error),
}
type Result<T> = core::result::Result<T, Error>;
pub struct Server {
generation: Generation,
webhook: Option<Addr<WebhookActor>>,
fs: FileSystem,
net: Network,
repository_factory: Box<dyn RepositoryFactory>,
sleep_duration: std::time::Duration,
}
impl Actor for Server {
type Context = Context<Self>;
}
impl Handler<FileUpdated> for Server {
type Result = ();
fn handle(&mut self, _msg: FileUpdated, ctx: &mut Self::Context) -> Self::Result {
let server_config = match ServerConfig::load(&self.fs) {
Ok(server_config) => server_config,
Err(err) => {
error!("Failed to load config file. Error: {}", err);
return;
}
};
ctx.notify(ReceiveServerConfig::new(server_config));
}
}
impl Handler<ReceiveServerConfig> for Server {
type Result = ();
#[allow(clippy::cognitive_complexity)] // TODO: (#75) reduce complexity
fn handle(&mut self, msg: ReceiveServerConfig, _ctx: &mut Self::Context) -> Self::Result {
let Ok(socket_addr) = msg.http() else {
warn!("Unable to parse http.addr");
return;
};
if let Some(webhook) = self.webhook.take() {
webhook.do_send(ShutdownWebhook);
}
self.generation.inc();
let server_config = msg;
// Server Storage
let dir = server_config.storage().path();
if !dir.exists() {
info!(?dir, "server storage doesn't exist - creating it");
if let Err(err) = self.fs.dir_create(dir) {
error!(?err, ?dir, "Failed to create server storage");
return;
}
}
let Ok(canon) = dir.canonicalize() else {
error!(?dir, "Failed to confirm server storage");
return;
};
info!(dir = ?canon, "server storage");
// Forge directories in Server Storage
let server_storage = server_config.storage();
if let Err(err) = self.create_forge_data_directories(&server_config, dir) {
error!(?err, "Failure creating forge storage");
return;
}
// Webhook Server
info!("Starting Webhook Server...");
let webhook_router = WebhookRouter::default().start();
let webhook = server_config.webhook();
// Forge Actors
for (forge_alias, forge_config) in server_config.forges() {
self.create_forge_repos(forge_config, forge_alias.clone(), server_storage, webhook)
.into_iter()
.map(|a| self.start_actor(a))
.map(|(repo_alias, addr)| {
AddWebhookRecipient::new(forge_alias.clone(), repo_alias, addr.recipient())
})
.for_each(|msg| webhook_router.do_send(msg));
}
let webhook = WebhookActor::new(socket_addr, webhook_router.recipient()).start();
self.webhook.replace(webhook);
}
}
impl Server {
pub fn new(
fs: FileSystem,
net: Network,
repo: Box<dyn RepositoryFactory>,
sleep_duration: std::time::Duration,
) -> Self {
let generation = Generation::default();
Self {
generation,
webhook: None,
fs,
net,
repository_factory: repo,
sleep_duration,
}
}
fn create_forge_data_directories(
&self,
server_config: &ServerConfig,
server_dir: &std::path::Path,
) -> Result<()> {
for (forge_name, _forge_config) in server_config.forges() {
let forge_dir: PathBuf = (&forge_name).into();
let path = server_dir.join(&forge_dir);
if self.fs.path_exists(&path)? {
if !self.fs.path_is_dir(&path)? {
return Err(Error::ForgeDirIsNotDirectory { path });
}
} else {
info!(%forge_name, ?path, "creating storage");
self.fs.dir_create_all(&path)?;
}
}
Ok(())
}
fn create_forge_repos(
&self,
forge_config: &ForgeConfig,
forge_name: ForgeAlias,
server_storage: &ServerStorage,
webhook: &Webhook,
) -> Vec<(ForgeAlias, RepoAlias, RepoActor)> {
let span =
tracing::info_span!("create_forge_repos", name = %forge_name, config = %forge_config);
let _guard = span.enter();
info!("Creating Forge");
let mut repos = vec![];
let creator = self.create_actor(forge_name, forge_config.clone(), server_storage, webhook);
for (repo_alias, server_repo_config) in forge_config.repos() {
let forge_repo = creator((repo_alias, server_repo_config));
info!(
alias = %forge_repo.1,
"Created Repo"
);
repos.push(forge_repo);
}
repos
}
fn create_actor(
&self,
forge_name: ForgeAlias,
forge_config: ForgeConfig,
server_storage: &ServerStorage,
webhook: &Webhook,
) -> impl Fn((RepoAlias, &ServerRepoConfig)) -> (ForgeAlias, RepoAlias, RepoActor) {
let server_storage = server_storage.clone();
let webhook = webhook.clone();
let net = self.net.clone();
let repository_factory = self.repository_factory.duplicate();
let generation = self.generation;
let sleep_duration = self.sleep_duration;
move |(repo_alias, server_repo_config)| {
let span = tracing::info_span!("create_actor", alias = %repo_alias, config = %server_repo_config);
let _guard = span.enter();
info!("Creating Repo");
let gitdir = server_repo_config.gitdir().map_or_else(
|| {
GitDir::from(
server_storage
.path()
.join(forge_name.to_string())
.join(repo_alias.to_string()),
)
},
|gitdir| gitdir,
);
// INFO: can't canonicalise gitdir as the path needs to exist to do that and we may not
// have cloned the repo yet
let repo_details = RepoDetails::new(
generation,
&repo_alias,
server_repo_config,
&forge_name,
&forge_config,
gitdir,
);
let forge = git_next_forge::Forge::create(repo_details.clone(), net.clone());
info!("Starting Repo Actor");
let actor = RepoActor::new(
repo_details,
forge,
webhook.clone(),
generation,
net.clone(),
repository_factory.duplicate(),
sleep_duration,
);
(forge_name.clone(), repo_alias, actor)
}
}
fn start_actor(
&self,
actor: (ForgeAlias, RepoAlias, RepoActor),
) -> (RepoAlias, Addr<RepoActor>) {
let (forge_name, repo_alias, actor) = actor;
let span = tracing::info_span!("start_actor", forge = %forge_name, repo = %repo_alias);
let _guard = span.enter();
let addr = actor.start();
addr.do_send(CloneRepo);
info!("Started");
(repo_alias, addr)
}
}