wip: add test to task_manager

refs: #5

.idea/codeStyles/Project.xml

@@ -0,0 +1,29 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <RsCodeStyleSettings>
+      <option name="INDENT_WHERE_CLAUSE" value="true" />
+    </RsCodeStyleSettings>
+    <SqlCodeStyleSettings version="7">
+      <option name="KEYWORD_CASE" value="2" />
+      <option name="SUBQUERY_OPENING" value="1" />
+      <option name="SUBQUERY_CONTENT" value="4" />
+      <option name="SUBQUERY_CLOSING" value="4" />
+      <option name="SUBQUERY_PAR_SPACE_BEFORE" value="1" />
+      <option name="INSERT_INTO_NL" value="2" />
+      <option name="INSERT_COLLAPSE_MULTI_ROW_VALUES" value="true" />
+      <option name="INSERT_MATRIX_ALIGN" value="true" />
+      <option name="INSERT_MATRIX_INCLUDING_HEADER" value="true" />
+      <option name="FROM_ALIGN_JOIN_TABLES" value="true" />
+      <option name="FROM_ALIGN_ALIASES" value="true" />
+    </SqlCodeStyleSettings>
+    <codeStyleSettings language="Rust">
+      <indentOptions>
+        <option name="INDENT_SIZE" value="2" />
+        <option name="CONTINUATION_INDENT_SIZE" value="2" />
+        <option name="TAB_SIZE" value="2" />
+        <option name="USE_TAB_CHARACTER" value="true" />
+        <option name="SMART_TABS" value="true" />
+      </indentOptions>
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -1,5 +1,5 @@
 <component name="ProjectCodeStyleConfiguration">
   <state>
-    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
   </state>
 </component>

lib_sync_core/src/database.rs

@@ -68,7 +68,9 @@ impl<T: TaskPayload> TasksPage<T> {
 
 pub trait TaskStorage<T: TaskPayload> {
     async fn insert_tasks<'a, I: IntoIterator<Item=&'a Task<T>>>(&self, tasks: I) -> crate::Result<()>;
-    fn get_tasks(&self, options: TaskStatus) -> impl Stream<Item = crate::Result<Task<T>>>;
+    fn get_tasks(&self, task_status: TaskStatus) -> impl Stream<Item = crate::Result<Task<T>>>;
+
+    async fn listen_tasks(&self, task_status: TaskStatus) -> crate::Result<()>;
     
     async fn get_paginated_tasks(&self, page: TaskPagination) -> crate::Result<TasksPage<T>>;
 }

lib_sync_core/src/database/sqlite.rs

@@ -108,6 +108,10 @@ impl<T: TaskPayload> TaskStorage<T> for Sqlite {
         query.fetch(&self.pool).err_into::<crate::Error>()
     }
 
+    async fn listen_tasks(&self, task_status: TaskStatus) -> crate::error::Result<()> {
+        todo!()
+    }
+
     async fn get_paginated_tasks(&self, page: TaskPagination) -> crate::Result<TasksPage<T>> {
         let mut builder: QueryBuilder<'_, sqlx::Sqlite> = QueryBuilder::new(
             "select id, payload_key, payload, status_id, created_at, updated_at from tasks ",
@@ -170,6 +174,7 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "MIGRATIONS")]
+    #[traced_test]
     async fn it_save_tasks(pool: SqlitePool) -> sqlx::Result<()> {
         let (sqlite, tasks) = setup(pool.clone(), 100);
 

lib_sync_core/src/tasks.rs

@@ -5,6 +5,7 @@ use std::fmt::Display;
 use tabled::Tabled;
 
 mod manager;
+mod jobs;
 
 #[derive(sqlx::Type, Debug, Clone)]
 #[repr(u8)]
@@ -43,8 +44,6 @@ impl<T: Serialize + DeserializeOwned + Send + Unpin + 'static + std::fmt::Debug>
 {
 }
 
-pub type TaskJob<T> = fn(&Task<T>) -> TaskStatus;
-
 #[derive(sqlx::FromRow, Tabled, Debug)]
 pub struct Task<T: TaskPayload> {
     id: u32,

lib_sync_core/src/tasks/jobs.rs

@@ -0,0 +1,3 @@
+use crate::tasks::{Task, TaskStatus};
+
+pub type TaskJob<T> = fn(&Task<T>) -> TaskStatus;

lib_sync_core/src/tasks/manager.rs

@@ -1,32 +1,147 @@
-use futures::StreamExt;
-use std::marker::PhantomData;
 use crate::database::TaskStorage;
-use crate::tasks::{Task, TaskJob, TaskPayload, TaskStatus};
+use crate::tasks::jobs::TaskJob;
+use crate::tasks::{Task, TaskPayload, TaskStatus};
+use futures::StreamExt;
+use futures::stream::FuturesOrdered;
+use std::marker::PhantomData;
 
-struct TaskManager<S: TaskPayload, T: TaskStorage<S>>
-{
+pub enum RateLimit {
+    Buffer(usize),
+    Rate(usize),
+    Ticks(usize),
+    None,
+}
+
+pub struct ExecuteOptions {
+    rate_limit: RateLimit,
+}
+
+impl ExecuteOptions {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn with_rate_limit(mut self, rate_limit: RateLimit) -> Self {
+        self.rate_limit = rate_limit;
+        self
+    }
+}
+
+impl Default for ExecuteOptions {
+    fn default() -> Self {
+        Self {
+            rate_limit: RateLimit::None,
+        }
+    }
+}
+
+struct TaskManager<S: TaskPayload, T: TaskStorage<S>> {
     storage: T,
+    options: ExecuteOptions,
     _marker: PhantomData<S>,
 }
 
 impl<S: TaskPayload, T: TaskStorage<S>> TaskManager<S, T> {
-    pub fn new(storage: T) -> Self {
-       Self {
-           storage,
-           _marker: PhantomData,
-       } 
+    pub fn new(storage: T, options: ExecuteOptions) -> Self {
+        Self {
+            storage,
+            options,
+            _marker: PhantomData,
+        }
     }
 
     pub async fn run_tasks(&self, func: TaskJob<S>) -> crate::Result<()> {
         let rows = self.storage.get_tasks(TaskStatus::Pending);
 
-        let result: Vec<(Task<S>, TaskStatus)> = rows.map(|x| {
-            let task = x.unwrap();
-            let status = func(&task);
+        let result: Vec<(Task<S>, TaskStatus)> = rows
+            .map(async |x| {
+                let task = x.unwrap();
+                let status = func(&task);
 
-            (task, status)
-        }).collect().await;
+                (task, status)
+            })
+            .collect()
+            .await;
 
         Ok(())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::database::{TaskPagination, TasksPage};
+    use fake::{Dummy, Fake, Faker};
+    use futures::{Stream, StreamExt};
+    use serde::{Deserialize, Serialize};
+    use sqlx::Row;
+    use sqlx::types::Uuid;
+    use tracing_test::traced_test;
+
+    #[derive(Dummy, Serialize, Deserialize, Debug)]
+    struct DummyTaskPayload {
+        key: Uuid,
+        _foo: String,
+        _bar: String,
+    }
+
+    struct DummyTaskStorage {}
+
+    impl TaskStorage<DummyTaskPayload> for DummyTaskStorage {
+        async fn insert_tasks<'a, I: IntoIterator<Item = &'a Task<DummyTaskPayload>>>(
+            &self,
+            _: I,
+        ) -> crate::error::Result<()> {
+            todo!()
+        }
+
+        fn get_tasks(
+            &self,
+            task_status: TaskStatus,
+        ) -> impl Stream<Item = crate::error::Result<Task<DummyTaskPayload>>> {
+            let payloads: Vec<DummyTaskPayload> = Faker.fake();
+
+            let tasks = payloads.into_iter().enumerate().map(move |(i, item)| {
+                Ok(Task::new((i + 1).to_string(), item, task_status.clone()))
+            });
+
+            futures::stream::iter(tasks)
+        }
+
+        async fn listen_tasks(&self, task_status: TaskStatus) -> crate::error::Result<()> {
+        todo!()
+    }
+        async fn listen_tasks2(&self, task_status: TaskStatus) -> FuturesOrdered<impl Future<Output=Task<DummyTaskPayload>> + Sized> {
+            let mut fifo = FuturesOrdered::new();
+
+            tokio::spawn(async move {
+                loop {
+                    tokio::time::sleep(std::time::Duration::from_millis(250)).await;
+                    let payload: DummyTaskPayload = Faker.fake();
+                    let task_status: TaskStatus = task_status.clone();
+                    fifo.push_back(async move {
+                        Task::new(payload.key.to_string(), payload, task_status)
+                    });
+                }
+            });
+            
+            fifo
+        }
+
+        async fn get_paginated_tasks(
+            &self,
+            _: TaskPagination,
+        ) -> crate::error::Result<TasksPage<DummyTaskPayload>> {
+            todo!()
+        }
+    }
+
+    #[tokio::test]
+    #[traced_test]
+    async fn manager_runs() {
+        let execute_options = ExecuteOptions::new();
+        let manager = TaskManager::new(DummyTaskStorage {}, execute_options);
+
+        manager.run_tasks(|_| TaskStatus::Completed).await.unwrap();
+    }
+}