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use crate::context::Context;
use crate::error::JobSchedulerError;
use crate::job::to_code::{JobCode, NotificationCode};
use crate::job::{JobCreator, JobDeleter, JobLocked, JobRunner};
use crate::notification::{NotificationCreator, NotificationDeleter, NotificationRunner};
use crate::scheduler::Scheduler;
use crate::simple::{
SimpleJobCode, SimpleMetadataStore, SimpleNotificationCode, SimpleNotificationStore,
};
use crate::store::{MetaDataStorage, NotificationStore};
use chrono::{DateTime, NaiveDateTime, Utc};
use std::future::Future;
use std::pin::Pin;
use std::sync::Arc;
#[cfg(feature = "signal")]
use tokio::signal::unix::SignalKind;
use tokio::sync::RwLock;
use tracing::{error, info};
use uuid::Uuid;
pub type ShutdownNotification =
dyn FnMut() -> Pin<Box<dyn Future<Output = ()> + Send>> + Send + Sync;
pub struct JobsSchedulerLocked {
pub context: Arc<Context>,
pub inited: Arc<RwLock<bool>>,
pub job_creator: Arc<RwLock<JobCreator>>,
pub job_deleter: Arc<RwLock<JobDeleter>>,
pub job_runner: Arc<RwLock<JobRunner>>,
pub notification_creator: Arc<RwLock<NotificationCreator>>,
pub notification_deleter: Arc<RwLock<NotificationDeleter>>,
pub notification_runner: Arc<RwLock<NotificationRunner>>,
pub scheduler: Arc<RwLock<Scheduler>>,
pub shutdown_notifier: Option<Arc<RwLock<Box<ShutdownNotification>>>>,
}
impl Clone for JobsSchedulerLocked {
fn clone(&self) -> Self {
JobsSchedulerLocked {
context: self.context.clone(),
inited: self.inited.clone(),
job_creator: self.job_creator.clone(),
job_deleter: self.job_deleter.clone(),
job_runner: self.job_runner.clone(),
notification_creator: self.notification_creator.clone(),
notification_deleter: self.notification_deleter.clone(),
notification_runner: self.notification_runner.clone(),
scheduler: self.scheduler.clone(),
shutdown_notifier: self.shutdown_notifier.clone(),
}
}
}
impl JobsSchedulerLocked {
async fn init_context(
metadata_storage: Arc<RwLock<Box<dyn MetaDataStorage + Send + Sync>>>,
notification_storage: Arc<RwLock<Box<dyn NotificationStore + Send + Sync>>>,
job_code: Arc<RwLock<Box<dyn JobCode + Send + Sync>>>,
notify_code: Arc<RwLock<Box<dyn NotificationCode + Send + Sync>>>,
) -> Result<Arc<Context>, JobSchedulerError> {
{
let mut metadata_storage = metadata_storage.write().await;
metadata_storage.init().await?;
}
{
let mut notification_storage = notification_storage.write().await;
notification_storage.init().await?;
}
let context = Context::new(
metadata_storage,
notification_storage,
job_code.clone(),
notify_code.clone(),
);
{
let mut job_code = job_code.write().await;
job_code.init(&context).await?;
}
{
let mut notification_code = notify_code.write().await;
notification_code.init(&context).await?;
}
Ok(Arc::new(context))
}
async fn init_actors(self) -> Result<(), JobSchedulerError> {
let for_job_runner = self.clone();
let Self {
context,
job_creator,
job_deleter,
job_runner,
notification_creator,
notification_deleter,
notification_runner,
scheduler,
..
} = self;
{
let job_creator = job_creator.write().await;
job_creator.init(&context).await?;
}
{
let mut job_deleter = job_deleter.write().await;
job_deleter.init(&context).await?;
}
{
let mut notification_creator = notification_creator.write().await;
notification_creator.init(&context).await?;
}
{
let mut notification_deleter = notification_deleter.write().await;
notification_deleter.init(&context).await?;
}
{
let mut notification_runner = notification_runner.write().await;
notification_runner.init(&context).await?;
}
{
let mut runner = job_runner.write().await;
runner.init(&context, for_job_runner).await?;
}
{
let mut scheduler = scheduler.write().await;
scheduler.init(&context).await;
}
Ok(())
}
pub async fn inited(&self) -> bool {
let r = self.inited.read().await;
*r
}
pub async fn init(&mut self) -> Result<(), JobSchedulerError> {
if self.inited().await {
return Ok(());
}
{
let mut w = self.inited.write().await;
*w = true;
}
self.clone()
.init_actors()
.await
.map_err(|_| JobSchedulerError::CantInit)
}
pub async fn new() -> Result<Self, JobSchedulerError> {
let metadata_storage = SimpleMetadataStore::default();
let metadata_storage: Arc<RwLock<Box<dyn MetaDataStorage + Send + Sync>>> =
Arc::new(RwLock::new(Box::new(metadata_storage)));
let notification_storage = SimpleNotificationStore::default();
let notification_storage: Arc<RwLock<Box<dyn NotificationStore + Send + Sync>>> =
Arc::new(RwLock::new(Box::new(notification_storage)));
let job_code = SimpleJobCode::default();
let job_code: Arc<RwLock<Box<dyn JobCode + Send + Sync>>> =
Arc::new(RwLock::new(Box::new(job_code)));
let notify_code = SimpleNotificationCode::default();
let notify_code: Arc<RwLock<Box<dyn NotificationCode + Send + Sync>>> =
Arc::new(RwLock::new(Box::new(notify_code)));
let context = JobsSchedulerLocked::init_context(
metadata_storage,
notification_storage,
job_code,
notify_code,
)
.await
.map_err(|_| JobSchedulerError::CantInit)?;
let val = JobsSchedulerLocked {
context,
inited: Arc::new(RwLock::new(false)),
job_creator: Arc::new(Default::default()),
job_deleter: Arc::new(Default::default()),
job_runner: Arc::new(Default::default()),
notification_creator: Arc::new(Default::default()),
notification_deleter: Arc::new(Default::default()),
notification_runner: Arc::new(Default::default()),
scheduler: Arc::new(Default::default()),
shutdown_notifier: None,
};
Ok(val)
}
pub async fn new_with_storage_and_code(
metadata_storage: Box<dyn MetaDataStorage + Send + Sync>,
notification_storage: Box<dyn NotificationStore + Send + Sync>,
job_code: Box<dyn JobCode + Send + Sync>,
notification_code: Box<dyn NotificationCode + Send + Sync>,
) -> Result<Self, JobSchedulerError> {
let metadata_storage = Arc::new(RwLock::new(metadata_storage));
let notification_storage = Arc::new(RwLock::new(notification_storage));
let job_code = Arc::new(RwLock::new(job_code));
let notification_code = Arc::new(RwLock::new(notification_code));
let context = JobsSchedulerLocked::init_context(
metadata_storage,
notification_storage,
job_code,
notification_code,
)
.await?;
let val = JobsSchedulerLocked {
context,
inited: Arc::new(RwLock::new(false)),
job_creator: Arc::new(Default::default()),
job_deleter: Arc::new(Default::default()),
job_runner: Arc::new(Default::default()),
notification_creator: Arc::new(Default::default()),
notification_deleter: Arc::new(Default::default()),
notification_runner: Arc::new(Default::default()),
scheduler: Arc::new(Default::default()),
shutdown_notifier: None,
};
Ok(val)
}
pub async fn add(&self, job: JobLocked) -> Result<Uuid, JobSchedulerError> {
let guid = job.guid();
if !self.inited().await {
info!("Uninited");
let mut s = self.clone();
s.init().await?;
}
let context = self.context.clone();
JobCreator::add(&context, job).await?;
info!("Job creator created");
Ok(guid)
}
pub async fn remove(&self, to_be_removed: &Uuid) -> Result<(), JobSchedulerError> {
if !self.inited().await {
let mut s = self.clone();
s.init().await?;
}
let context = self.context();
JobDeleter::remove(&context, to_be_removed)
}
pub async fn start(&self) -> Result<(), JobSchedulerError> {
if !self.inited().await {
let mut s = self.clone();
s.init().await?;
}
let mut scheduler = self.scheduler.write().await;
let ret = scheduler.start().await;
match ret {
Ok(ret) => Ok(ret),
Err(e) => {
error!("Error receiving start result {:?}", e);
Err(JobSchedulerError::StartScheduler)
}
}
}
pub async fn time_till_next_job(
&mut self,
) -> Result<Option<std::time::Duration>, JobSchedulerError> {
if !self.inited().await {
let mut s = self.clone();
s.init().await?;
}
let metadata = self.context.metadata_storage.clone();
let mut metadata = metadata.write().await;
let ret = metadata.time_till_next_job().await;
match ret {
Ok(ret) => Ok(ret),
Err(e) => {
error!("Error getting return of time till next job {:?}", e);
Err(JobSchedulerError::CantGetTimeUntil)
}
}
}
pub async fn next_tick_for_job(
&mut self,
job_id: Uuid,
) -> Result<Option<DateTime<Utc>>, JobSchedulerError> {
if !self.inited().await {
let mut s = self.clone();
s.init().await?;
}
let mut r = self.context.metadata_storage.write().await;
r.get(job_id).await.map(|v| {
v.map(|vv| vv.next_tick)
.filter(|t| *t != 0)
.map(|ts| NaiveDateTime::from_timestamp(ts as i64, 0))
.map(|ts| DateTime::from_utc(ts, Utc))
})
}
pub async fn shutdown(&mut self) -> Result<(), JobSchedulerError> {
let mut notify = None;
std::mem::swap(&mut self.shutdown_notifier, &mut notify);
let mut scheduler = self.scheduler.write().await;
scheduler.shutdown().await;
if let Some(notify) = notify {
let mut notify = notify.write().await;
notify().await;
}
Ok(())
}
#[cfg(feature = "signal")]
pub fn shutdown_on_signal(&self, signal: SignalKind) {
let mut l = self.clone();
tokio::spawn(async move {
if let Some(_k) = tokio::signal::unix::signal(signal)
.expect("Can't wait for signal")
.recv()
.await
{
l.shutdown().await.expect("Problem shutting down");
}
});
}
#[cfg(feature = "signal")]
pub fn shutdown_on_ctrl_c(&self) {
let mut l = self.clone();
tokio::spawn(async move {
tokio::signal::ctrl_c()
.await
.expect("Could not await ctrl-c");
if let Err(err) = l.shutdown().await {
error!("{:?}", err);
}
});
}
pub fn set_shutdown_handler(&mut self, job: Box<ShutdownNotification>) {
self.shutdown_notifier = Some(Arc::new(RwLock::new(job)));
}
pub fn remove_shutdown_handler(&mut self) {
self.shutdown_notifier = None;
}
pub fn context(&self) -> Arc<Context> {
self.context.clone()
}
}