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Async Worker (#44)

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* stating with async worker

* async sleep solve and update state test

* uncomenting line

* retention mode and sleep params in lib.rs

* fixing code style

* trying to solve

* dont like changes

* Add AsyncQueueable trait (#45)

* add trait

* update runnable trait

* fix test

Co-authored-by: Ayrat Badykov <ayratin555@gmail.com>
This commit is contained in:
Pmarquez 2022-07-23 14:24:22 +00:00 committed by GitHub
parent d585bde870
commit 8d0a23e2f9
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 383 additions and 178 deletions
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1
Cargo.toml
View file

@ -12,6 +12,7 @@ rust-version = "1.62"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[features]
default = ["blocking", "asynk"]
blocking = ["diesel", "diesel-derive-enum", "dotenv"]
asynk = ["bb8-postgres", "postgres-types", "tokio", "async-trait", "typed-builder"]

356
src/asynk/async_queue.rs
View file

@ -1,4 +1,4 @@
use crate::asynk::AsyncRunnable;
use async_trait::async_trait;
use bb8_postgres::bb8::Pool;
use bb8_postgres::bb8::RunError;
use bb8_postgres::tokio_postgres::row::Row;
@ -90,6 +90,7 @@ pub struct NewPeriodicTask {
#[builder(setter(into))]
pub period_in_seconds: i32,
}
#[derive(Debug, Error)]
pub enum AsyncQueueError {
#[error(transparent)]
@ -100,6 +101,36 @@ pub enum AsyncQueueError {
ResultError { expected: u64, found: u64 },
}
#[async_trait]
pub trait AsyncQueueable {
async fn fetch_and_touch_task(
&mut self,
task_type: &Option<String>,
) -> Result<Option<Task>, AsyncQueueError>;
async fn insert_task(
&mut self,
task: serde_json::Value,
task_type: &str,
) -> Result<Task, AsyncQueueError>;
async fn remove_all_tasks(&mut self) -> Result<u64, AsyncQueueError>;
async fn remove_task(&mut self, task: Task) -> Result<u64, AsyncQueueError>;
async fn remove_tasks_type(&mut self, task_type: &str) -> Result<u64, AsyncQueueError>;
async fn update_task_state(
&mut self,
task: Task,
state: FangTaskState,
) -> Result<Task, AsyncQueueError>;
async fn fail_task(&mut self, task: Task, error_message: &str)
-> Result<Task, AsyncQueueError>;
}
#[derive(Debug, Clone)]
pub struct AsyncQueue<Tls>
where
Tls: MakeTlsConnect<Socket> + Clone + Send + Sync + 'static,
@ -117,80 +148,11 @@ where
<Tls as MakeTlsConnect<Socket>>::TlsConnect: Send,
<<Tls as MakeTlsConnect<Socket>>::TlsConnect as TlsConnect<Socket>>::Future: Send,
{
pub fn new(pool: Pool<PostgresConnectionManager<Tls>>) -> Self {
AsyncQueue { pool }
}
pub async fn connect(uri: impl ToString, tls: Tls) -> Result<Self, AsyncQueueError> {
let manager = PostgresConnectionManager::new_from_stringlike(uri, tls)?;
let pool = Pool::builder().build(manager).await?;
pub async fn fetch_and_touch_task(
&mut self,
task_type: &Option<String>,
) -> Result<Task, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::fetch_and_touch_task_query(&mut transaction, task_type).await?;
transaction.commit().await?;
Ok(task)
}
pub async fn insert_task(&mut self, task: &dyn AsyncRunnable) -> Result<Task, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::insert_task_query(&mut transaction, task).await?;
transaction.commit().await?;
Ok(task)
}
pub async fn remove_all_tasks(&mut self) -> Result<u64, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let result = Self::remove_all_tasks_query(&mut transaction).await?;
transaction.commit().await?;
Ok(result)
}
pub async fn remove_task(&mut self, task: &Task) -> Result<u64, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let result = Self::remove_task_query(&mut transaction, task).await?;
transaction.commit().await?;
Ok(result)
}
pub async fn remove_tasks_type(&mut self, task_type: &str) -> Result<u64, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let result = Self::remove_tasks_type_query(&mut transaction, task_type).await?;
transaction.commit().await?;
Ok(result)
}
pub async fn fail_task(
&mut self,
task: Task,
error_message: &str,
) -> Result<Task, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::fail_task_query(&mut transaction, task, error_message).await?;
transaction.commit().await?;
Ok(task)
Ok(Self { pool })
}
pub async fn remove_all_tasks_query(
@ -201,7 +163,7 @@ where
pub async fn remove_task_query(
transaction: &mut Transaction<'_>,
task: &Task,
task: Task,
) -> Result<u64, AsyncQueueError> {
Self::execute_query(transaction, REMOVE_TASK_QUERY, &[&task.id], Some(1)).await
}
@ -238,19 +200,25 @@ where
pub async fn fetch_and_touch_task_query(
transaction: &mut Transaction<'_>,
task_type: &Option<String>,
) -> Result<Task, AsyncQueueError> {
) -> Result<Option<Task>, AsyncQueueError> {
let task_type = match task_type {
Some(passed_task_type) => passed_task_type,
None => DEFAULT_TASK_TYPE,
};
let mut task = Self::get_task_type_query(transaction, task_type).await?;
Self::update_task_state_query(transaction, &task, FangTaskState::InProgress).await?;
task.state = FangTaskState::InProgress;
Ok(task)
let task = match Self::get_task_type_query(transaction, task_type).await {
Ok(some_task) => Some(some_task),
Err(_) => None,
};
let result_task = if let Some(some_task) = task {
Some(
Self::update_task_state_query(transaction, some_task, FangTaskState::InProgress)
.await?,
)
} else {
None
};
Ok(result_task)
}
pub async fn get_task_type_query(
@ -268,27 +236,23 @@ where
pub async fn update_task_state_query(
transaction: &mut Transaction<'_>,
task: &Task,
task: Task,
state: FangTaskState,
) -> Result<u64, AsyncQueueError> {
) -> Result<Task, AsyncQueueError> {
let updated_at = Utc::now();
Self::execute_query(
transaction,
UPDATE_TASK_STATE_QUERY,
&[&state, &updated_at, &task.id],
Some(1),
)
.await
let row: Row = transaction
.query_one(UPDATE_TASK_STATE_QUERY, &[&state, &updated_at, &task.id])
.await?;
let task = Self::row_to_task(row);
Ok(task)
}
pub async fn insert_task_query(
transaction: &mut Transaction<'_>,
task: &dyn AsyncRunnable,
metadata: serde_json::Value,
task_type: &str,
) -> Result<Task, AsyncQueueError> {
let metadata = serde_json::to_value(task).unwrap();
let task_type = task.task_type();
let row: Row = transaction
.query_one(INSERT_TASK_QUERY, &[&metadata, &task_type])
.await?;
@ -339,16 +303,117 @@ where
}
}
#[async_trait]
impl<Tls> AsyncQueueable for AsyncQueue<Tls>
where
Tls: MakeTlsConnect<Socket> + Clone + Send + Sync + 'static,
<Tls as MakeTlsConnect<Socket>>::Stream: Send + Sync,
<Tls as MakeTlsConnect<Socket>>::TlsConnect: Send,
<<Tls as MakeTlsConnect<Socket>>::TlsConnect as TlsConnect<Socket>>::Future: Send,
{
async fn fetch_and_touch_task(
&mut self,
task_type: &Option<String>,
) -> Result<Option<Task>, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::fetch_and_touch_task_query(&mut transaction, task_type).await?;
transaction.commit().await?;
Ok(task)
}
async fn insert_task(
&mut self,
metadata: serde_json::Value,
task_type: &str,
) -> Result<Task, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::insert_task_query(&mut transaction, metadata, task_type).await?;
transaction.commit().await?;
Ok(task)
}
async fn remove_all_tasks(&mut self) -> Result<u64, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let result = Self::remove_all_tasks_query(&mut transaction).await?;
transaction.commit().await?;
Ok(result)
}
async fn remove_task(&mut self, task: Task) -> Result<u64, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let result = Self::remove_task_query(&mut transaction, task).await?;
transaction.commit().await?;
Ok(result)
}
async fn remove_tasks_type(&mut self, task_type: &str) -> Result<u64, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let result = Self::remove_tasks_type_query(&mut transaction, task_type).await?;
transaction.commit().await?;
Ok(result)
}
async fn update_task_state(
&mut self,
task: Task,
state: FangTaskState,
) -> Result<Task, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::update_task_state_query(&mut transaction, task, state).await?;
transaction.commit().await?;
Ok(task)
}
async fn fail_task(
&mut self,
task: Task,
error_message: &str,
) -> Result<Task, AsyncQueueError> {
let mut connection = self.pool.get().await?;
let mut transaction = connection.transaction().await?;
let task = Self::fail_task_query(&mut transaction, task, error_message).await?;
transaction.commit().await?;
Ok(task)
}
}
#[cfg(test)]
mod async_queue_tests {
use super::AsyncQueue;
use super::AsyncQueueable;
use super::FangTaskState;
use super::Task;
use crate::asynk::AsyncRunnable;
use crate::asynk::Error;
use async_trait::async_trait;
use bb8_postgres::bb8::Pool;
use bb8_postgres::tokio_postgres::Client;
use bb8_postgres::tokio_postgres::NoTls;
use bb8_postgres::tokio_postgres::Transaction;
use bb8_postgres::PostgresConnectionManager;
use serde::{Deserialize, Serialize};
@ -358,9 +423,9 @@ mod async_queue_tests {
}
#[typetag::serde]
#[async_trait]
#[async_trait(?Send)]
impl AsyncRunnable for AsyncTask {
async fn run(&self, _connection: &Client) -> Result<(), Error> {
async fn run(&self, _queueable: &mut dyn AsyncQueueable) -> Result<(), Error> {
Ok(())
}
}
@ -371,10 +436,14 @@ mod async_queue_tests {
let mut connection = pool.get().await.unwrap();
let mut transaction = connection.transaction().await.unwrap();
let task = AsyncTask { number: 1 };
let metadata = serde_json::to_value(&task as &dyn AsyncRunnable).unwrap();
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 1 })
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, metadata, &task.task_type())
.await
.unwrap();
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -383,29 +452,62 @@ mod async_queue_tests {
assert_eq!(Some("AsyncTask"), type_task);
transaction.rollback().await.unwrap();
}
#[tokio::test]
async fn update_task_state_test() {
let pool = pool().await;
let mut connection = pool.get().await.unwrap();
let mut transaction = connection.transaction().await.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 1 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
let id = task.id;
assert_eq!(Some(1), number);
assert_eq!(Some("AsyncTask"), type_task);
let finished_task = AsyncQueue::<NoTls>::update_task_state_query(
&mut transaction,
task,
FangTaskState::Finished,
)
.await
.unwrap();
assert_eq!(id, finished_task.id);
assert_eq!(FangTaskState::Finished, finished_task.state);
transaction.rollback().await.unwrap();
}
#[tokio::test]
async fn failed_task_query_test() {
let pool = pool().await;
let mut connection = pool.get().await.unwrap();
let mut transaction = connection.transaction().await.unwrap();
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 1 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 1 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
let id = task.id;
assert_eq!(Some(1), number);
assert_eq!(Some("AsyncTask"), type_task);
let failed_task =
AsyncQueue::<NoTls>::fail_task_query(&mut transaction, task, "Some error")
.await
.unwrap();
assert_eq!(id, failed_task.id);
assert_eq!(Some("Some error"), failed_task.error_message.as_deref());
assert_eq!(FangTaskState::Failed, failed_task.state);
transaction.rollback().await.unwrap();
}
@ -415,10 +517,7 @@ mod async_queue_tests {
let mut connection = pool.get().await.unwrap();
let mut transaction = connection.transaction().await.unwrap();
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 1 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 1 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
@ -427,10 +526,8 @@ mod async_queue_tests {
assert_eq!(Some(1), number);
assert_eq!(Some("AsyncTask"), type_task);
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 2 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 2 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -452,10 +549,8 @@ mod async_queue_tests {
let mut connection = pool.get().await.unwrap();
let mut transaction = connection.transaction().await.unwrap();
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 1 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 1 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -463,10 +558,8 @@ mod async_queue_tests {
assert_eq!(Some(1), number);
assert_eq!(Some("AsyncTask"), type_task);
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 2 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 2 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -476,7 +569,9 @@ mod async_queue_tests {
let task = AsyncQueue::<NoTls>::fetch_and_touch_task_query(&mut transaction, &None)
.await
.unwrap()
.unwrap();
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -486,6 +581,7 @@ mod async_queue_tests {
let task = AsyncQueue::<NoTls>::fetch_and_touch_task_query(&mut transaction, &None)
.await
.unwrap()
.unwrap();
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
@ -503,10 +599,8 @@ mod async_queue_tests {
let mut connection = pool.get().await.unwrap();
let mut transaction = connection.transaction().await.unwrap();
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 1 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 1 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -514,10 +608,8 @@ mod async_queue_tests {
assert_eq!(Some(1), number);
assert_eq!(Some("AsyncTask"), type_task);
let task =
AsyncQueue::<NoTls>::insert_task_query(&mut transaction, &AsyncTask { number: 2 })
.await
.unwrap();
let task = insert_task(&mut transaction, &AsyncTask { number: 2 }).await;
let metadata = task.metadata.as_object().unwrap();
let number = metadata["number"].as_u64();
let type_task = metadata["type"].as_str();
@ -547,4 +639,12 @@ mod async_queue_tests {
Pool::builder().build(pg_mgr).await.unwrap()
}
async fn insert_task(transaction: &mut Transaction<'_>, task: &dyn AsyncRunnable) -> Task {
let metadata = serde_json::to_value(task).unwrap();
AsyncQueue::<NoTls>::insert_task_query(transaction, metadata, &task.task_type())
.await
.unwrap()
}
}

6
src/asynk/async_runnable.rs
View file

@ -1,5 +1,5 @@
use crate::asynk::async_queue::AsyncQueueable;
use async_trait::async_trait;
use bb8_postgres::tokio_postgres::Client;
const COMMON_TYPE: &str = "common";
@ -9,9 +9,9 @@ pub struct Error {
}
#[typetag::serde(tag = "type")]
#[async_trait]
#[async_trait(?Send)]
pub trait AsyncRunnable {
async fn run(&self, client: &Client) -> Result<(), Error>;
async fn run(&self, client: &mut dyn AsyncQueueable) -> Result<(), Error>;
fn task_type(&self) -> String {
COMMON_TYPE.to_string()

109
src/asynk/async_worker.rs Normal file
View file

@ -0,0 +1,109 @@
use crate::asynk::async_queue::AsyncQueue;
use crate::asynk::async_queue::AsyncQueueable;
use crate::asynk::async_queue::FangTaskState;
use crate::asynk::async_queue::Task;
use crate::asynk::async_runnable::AsyncRunnable;
use crate::asynk::Error;
use crate::{RetentionMode, SleepParams};
use bb8_postgres::tokio_postgres::tls::MakeTlsConnect;
use bb8_postgres::tokio_postgres::tls::TlsConnect;
use bb8_postgres::tokio_postgres::Socket;
use log::error;
use std::time::Duration;
use typed_builder::TypedBuilder;
#[derive(TypedBuilder, Debug)]
pub struct AsyncWorker<Tls>
where
Tls: MakeTlsConnect<Socket> + Clone + Send + Sync + 'static,
<Tls as MakeTlsConnect<Socket>>::Stream: Send + Sync,
<Tls as MakeTlsConnect<Socket>>::TlsConnect: Send,
<<Tls as MakeTlsConnect<Socket>>::TlsConnect as TlsConnect<Socket>>::Future: Send,
{
#[builder(setter(into))]
pub queue: AsyncQueue<Tls>,
#[builder(setter(into))]
pub task_type: Option<String>,
#[builder(setter(into))]
pub sleep_params: SleepParams,
#[builder(setter(into))]
pub retention_mode: RetentionMode,
}
impl<Tls> AsyncWorker<Tls>
where
Tls: MakeTlsConnect<Socket> + Clone + Send + Sync + 'static,
<Tls as MakeTlsConnect<Socket>>::Stream: Send + Sync,
<Tls as MakeTlsConnect<Socket>>::TlsConnect: Send,
<<Tls as MakeTlsConnect<Socket>>::TlsConnect as TlsConnect<Socket>>::Future: Send,
{
pub async fn run(&mut self, task: Task) {
let result = self.execute_task(task).await;
self.finalize_task(result).await
}
async fn execute_task(&mut self, task: Task) -> Result<Task, (Task, String)> {
let actual_task: Box<dyn AsyncRunnable> =
serde_json::from_value(task.metadata.clone()).unwrap();
let task_result = actual_task.run(&mut self.queue).await;
match task_result {
Ok(()) => Ok(task),
Err(error) => Err((task, error.description)),
}
}
async fn finalize_task(&mut self, result: Result<Task, (Task, String)>) {
match self.retention_mode {
RetentionMode::KeepAll => {
match result {
Ok(task) => self
.queue
.update_task_state(task, FangTaskState::Finished)
.await
.unwrap(),
Err((task, error)) => self.queue.fail_task(task, &error).await.unwrap(),
};
}
RetentionMode::RemoveAll => {
match result {
Ok(task) => self.queue.remove_task(task).await.unwrap(),
Err((task, _error)) => self.queue.remove_task(task).await.unwrap(),
};
}
RetentionMode::RemoveFinished => match result {
Ok(task) => {
self.queue.remove_task(task).await.unwrap();
}
Err((task, error)) => {
self.queue.fail_task(task, &error).await.unwrap();
}
},
}
}
pub async fn sleep(&mut self) {
self.sleep_params.maybe_increase_sleep_period();
tokio::time::sleep(Duration::from_secs(self.sleep_params.sleep_period)).await;
}
pub async fn run_tasks(&mut self) -> Result<(), Error> {
loop {
match self
.queue
.fetch_and_touch_task(&self.task_type.clone())
.await
{
Ok(Some(task)) => {
self.sleep_params.maybe_reset_sleep_period();
self.run(task).await;
}
Ok(None) => {
self.sleep().await;
}
Err(error) => {
error!("Failed to fetch a task {:?}", error);
self.sleep().await;
}
};
}
}
}

2
src/asynk/mod.rs
View file

@ -1,5 +1,5 @@
pub mod async_queue;
pub mod async_runnable;
pub mod async_worker;
pub use async_runnable::AsyncRunnable;
pub use async_runnable::Error;

2
src/asynk/queries/update_task_state.sql
View file

@ -1 +1 @@
UPDATE "fang_tasks" SET "state" = $1 , "updated_at" = $2 WHERE id = $3
UPDATE "fang_tasks" SET "state" = $1 , "updated_at" = $2 WHERE id = $3 RETURNING id , state , metadata , error_message , task_type , created_at , updated_at

44
src/blocking/executor.rs
View file

@ -1,7 +1,8 @@
use crate::error::FangError;
use crate::queue::Queue;
use crate::queue::Task;
use crate::worker_pool::{SharedState, WorkerState};
use crate::Task;
use crate::{RetentionMode, SleepParams};
use diesel::pg::PgConnection;
use diesel::r2d2::{ConnectionManager, PooledConnection};
use log::error;
@ -15,47 +16,6 @@ pub struct Executor {
pub retention_mode: RetentionMode,
shared_state: Option<SharedState>,
}
#[derive(Clone)]
pub enum RetentionMode {
KeepAll,
RemoveAll,
RemoveFinished,
}
#[derive(Clone)]
pub struct SleepParams {
pub sleep_period: u64,
pub max_sleep_period: u64,
pub min_sleep_period: u64,
pub sleep_step: u64,
}
impl SleepParams {
pub fn maybe_reset_sleep_period(&mut self) {
if self.sleep_period != self.min_sleep_period {
self.sleep_period = self.min_sleep_period;
}
}
pub fn maybe_increase_sleep_period(&mut self) {
if self.sleep_period < self.max_sleep_period {
self.sleep_period += self.sleep_step;
}
}
}
impl Default for SleepParams {
fn default() -> Self {
SleepParams {
sleep_period: 5,
max_sleep_period: 15,
min_sleep_period: 5,
sleep_step: 5,
}
}
}
#[derive(Debug)]
pub struct Error {
pub description: String,

5
src/blocking/worker_pool.rs
View file

@ -2,9 +2,8 @@ use crate::diesel::r2d2;
use crate::diesel::PgConnection;
use crate::error::FangError;
use crate::executor::Executor;
use crate::executor::RetentionMode;
use crate::executor::SleepParams;
use crate::queue::Queue;
use crate::{RetentionMode, SleepParams};
use log::error;
use log::info;
use std::collections::HashMap;
@ -223,11 +222,11 @@ mod task_pool_tests {
use super::WorkerParams;
use super::WorkerPool;
use crate::executor::Error;
use crate::executor::RetentionMode;
use crate::executor::Runnable;
use crate::queue::Queue;
use crate::schema::{fang_tasks, FangTaskState};
use crate::typetag;
use crate::RetentionMode;
use crate::Task;
use diesel::pg::PgConnection;
use diesel::prelude::*;

36
src/lib.rs
View file

@ -1,4 +1,40 @@
#![allow(clippy::extra_unused_lifetimes)]
#[derive(Clone, Debug)]
pub enum RetentionMode {
KeepAll,
RemoveAll,
RemoveFinished,
}
#[derive(Clone, Debug)]
pub struct SleepParams {
pub sleep_period: u64,
pub max_sleep_period: u64,
pub min_sleep_period: u64,
pub sleep_step: u64,
}
impl SleepParams {
pub fn maybe_reset_sleep_period(&mut self) {
if self.sleep_period != self.min_sleep_period {
self.sleep_period = self.min_sleep_period;
}
}
pub fn maybe_increase_sleep_period(&mut self) {
if self.sleep_period < self.max_sleep_period {
self.sleep_period += self.sleep_step;
}
}
}
impl Default for SleepParams {
fn default() -> Self {
SleepParams {
sleep_period: 5,
max_sleep_period: 15,
min_sleep_period: 5,
sleep_step: 5,
}
}
}
#[macro_use]
#[cfg(feature = "blocking")]