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b/Cargo.toml @@ -7,3 +7,9 @@ edition = "2021" [dependencies] lazy_static = "1.4.0" +postgres = "0.19.5" +r2d2 = "0.8.10" +diesel = { version = "2.0.0", features = ["postgres", "r2d2"] } +serde = { version = "1.0", features = ["derive"] } +serde_json = "1.0" +thiserror = "1.0" diff --git a/Makefile b/Makefile index 864d134..3fb4c02 100644 --- a/Makefile +++ b/Makefile @@ -8,4 +8,10 @@ build: format cargo build --release test: - cargo test -r -- --nocapture \ No newline at end of file + cargo test -r -- --nocapture + +db-start: + docker compose up postgresql -d + +db-stop: + docker compose down \ No newline at end of file diff --git a/diesel.toml b/diesel.toml new file mode 100644 index 0000000..8de8093 --- /dev/null +++ b/diesel.toml @@ -0,0 +1,8 @@ +# For documentation on how to configure this file, +# see https://diesel.rs/guides/configuring-diesel-cli + +[print_schema] +file = "src/database/schema.rs" + +[migrations_directory] +dir = "migrations" diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..62d4d38 --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,21 @@ +version: "3.7" + +services: + + postgresql: + image: postgres:13.2 + restart: unless-stopped + env_file: .env + ports: + - 5433:5432 + volumes: + - postgresql_data:/var/lib/postgresql/data/ + networks: + - dispatcher_network + +networks: + dispatcher_network: + name: dispatcher_network + +volumes: + postgresql_data: diff --git a/src/database/client.rs b/src/database/client.rs new file mode 100644 index 0000000..a9b598f --- /dev/null +++ b/src/database/client.rs @@ -0,0 +1,27 @@ +use r2d2; + +use diesel::pg::PgConnection; +use diesel::r2d2::ConnectionManager; +use lazy_static::lazy_static; + +type Pool = r2d2::Pool>; +pub type DbConnection = r2d2::PooledConnection>; + +lazy_static! { + static ref POOL: Pool = { + let database_url = "postgres://rust:rust@localhost:5433/dispatcher"; + let manager = ConnectionManager::::new(database_url); + Pool::new(manager).expect("failed to create db pool") + }; +} + +pub fn init_database_pool() { + lazy_static::initialize(&POOL); +} + +pub fn get_connection() -> Result { + match POOL.get() { + Ok(conn) => Ok(conn), + Err(e) => Err(format!("unable to get pool connection: {}", e)), + } +} diff --git a/src/database/mod.rs b/src/database/mod.rs new file mode 100644 index 0000000..a0762b8 --- /dev/null +++ b/src/database/mod.rs @@ -0,0 +1,3 @@ +mod client; + +pub use client::{get_connection, init_database_pool}; diff --git a/src/error/mod.rs b/src/error/mod.rs new file mode 100644 index 0000000..77ad282 --- /dev/null +++ b/src/error/mod.rs @@ -0,0 +1,3 @@ +mod storer; + +pub use storer::StorerError; diff --git a/src/error/storer.rs b/src/error/storer.rs new file mode 100644 index 0000000..6bda9ad --- /dev/null +++ b/src/error/storer.rs @@ -0,0 +1,13 @@ +use thiserror::Error; + +#[derive(Error, Debug)] +pub enum StorerError { + #[error("unable to insert `{0}`")] + InsertError(String), + #[error("unable to save `{0}`")] + SaveError(String), + #[error("unable to delete `{0}`")] + DeleteError(String), + #[error("unknown saver error")] + Unknown, +} diff --git a/src/main.rs b/src/main.rs index 1cf4603..eca4bee 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,4 +1,7 @@ +mod database; +mod error; mod message; +mod model; mod queue; mod worker; @@ -6,6 +9,7 @@ use std::sync::mpsc::{channel, Sender}; use std::thread; use std::time; +use database::{get_connection, init_database_pool}; use message::Message; use queue::QueueController; @@ -41,6 +45,8 @@ impl Dispatch { } fn main() { + init_database_pool(); + let dispatch: Dispatch = Dispatch::new(); let wait = time::Duration::from_secs(2); diff --git a/src/model/job.rs b/src/model/job.rs new file mode 100644 index 0000000..03b811b --- /dev/null +++ b/src/model/job.rs @@ -0,0 +1,79 @@ +use crate::database::get_connection; +use std::time::Duration; +use std::{thread, time}; + +use super::{Runner, RunnerStatus, Storer}; +use crate::error::StorerError; + +#[derive(Debug)] +pub enum JobAction { + MegaportDeploy, + MegaportUndeploy, + MegaportCheckDeploy, + MegaportCheckUndeploy, +} + +#[derive(Debug)] +pub struct Job { + id: i32, + action: JobAction, + status: RunnerStatus, +} + +impl Job { + pub fn new(id: i32, action: JobAction) -> Self { + Self { + id: id, + action: action, + status: RunnerStatus::Pending, + } + } + + pub fn set_status(&mut self, status: RunnerStatus) { + self.status = status; + } +} + +impl Runner for Job { + fn run(&mut self) { + self.set_status(RunnerStatus::Running); + + match self.action { + JobAction::MegaportDeploy => { + println!("[job({:?})] deploying megaport...", self); + } + JobAction::MegaportUndeploy => { + println!("[job({:?})] undeploying megaport...", self); + } + JobAction::MegaportCheckDeploy => { + println!("[job({:?})] ckecking megaport deployment...", self); + } + JobAction::MegaportCheckUndeploy => { + println!("[job({:?})] ckecking megaport undeployment...", self); + } + } + + let wait = time::Duration::from_millis(1); + thread::sleep(wait); + + self.set_status(RunnerStatus::Success); + } + + fn set_status(&mut self, status: RunnerStatus) { + self.status = status; + } +} + +impl Storer for Job { + fn insert(&self) -> Result<(), StorerError> { + Ok(()) + } + + fn save(&self) -> Result<(), StorerError> { + Ok(()) + } + + fn delete(&self) -> Result<(), StorerError> { + Ok(()) + } +} diff --git a/src/model/mod.rs b/src/model/mod.rs new file mode 100644 index 0000000..5551272 --- /dev/null +++ b/src/model/mod.rs @@ -0,0 +1,5 @@ +mod job; +mod traits; + +pub use job::{Job, JobAction}; +pub use traits::{Runner, RunnerStatus, Storer}; diff --git a/src/model/traits.rs b/src/model/traits.rs new file mode 100644 index 0000000..5b73864 --- /dev/null +++ b/src/model/traits.rs @@ -0,0 +1,20 @@ +use crate::error::StorerError; + +#[derive(Debug)] +pub enum RunnerStatus { + Pending, + Running, + Failed, + Success, +} + +pub trait Runner { + fn run(&mut self); + fn set_status(&mut self, status: RunnerStatus); +} + +pub trait Storer { + fn insert(&self) -> Result<(), StorerError>; + fn save(&self) -> Result<(), StorerError>; + fn delete(&self) -> Result<(), StorerError>; +} diff --git a/src/worker/worker.rs b/src/worker/worker.rs index 5826666..e1115f0 100644 --- a/src/worker/worker.rs +++ b/src/worker/worker.rs @@ -1,84 +1,34 @@ use std::collections::VecDeque; -use std::sync::{Arc, Mutex, Condvar}; +use std::sync::{Arc, Condvar, Mutex}; use std::thread; use std::time; use std::time::Duration; use crate::message::Message; +use crate::model::*; use crate::queue::QueueStatus; -struct Queue { - status: Mutex, - content: Mutex>, +struct Queue { + content: Mutex>, not_empty: Condvar, } -impl Queue { +impl Queue { fn new() -> Self { Self { - status: Mutex::new(QueueStatus::Pending), content: Mutex::new(VecDeque::new()), not_empty: Condvar::new(), } } - pub fn set_status(&mut self, status: QueueStatus) { - let mut s = self.status.lock().unwrap(); - *s = status; - } - - pub fn add_job(&self, job: Job) { + pub fn add_runner(&self, runner: T) { let mut c = self.content.lock().unwrap(); - c.push_back(job); + c.push_back(runner); self.not_empty.notify_one(); } } -#[derive(Copy, Clone)] -pub enum JobAction { - MegaportDeploy, - MegaportUndeploy, - MegaportCheckDeploy, - MegaportCheckUndeploy -} - -pub struct Job { - id: u32, - action: JobAction, - data: String, -} - -impl Job { - fn new(id: u32, action: JobAction, data: &str) -> Self { - Self { - id: id, - action: action, - data: data.to_string() - } - } - - fn run(&self) { - let id = self.id.clone(); - match self.action { - JobAction::MegaportDeploy => { - println!("[job({})] deploying megaport...", id); - }, - JobAction::MegaportUndeploy => { - println!("[job({})] undeploying megaport...", id); - }, - JobAction::MegaportCheckDeploy => { - println!("[job({})] ckecking megaport deployment...", id); - } - JobAction::MegaportCheckUndeploy => { - println!("[job({})] ckecking megaport undeployment...", id); - } - } - let wait = time::Duration::from_millis(1); - thread::sleep(wait); - } -} - #[derive(Copy, Clone, PartialEq)] pub enum WorkerStatus { Pending, @@ -112,11 +62,18 @@ pub struct Manager { } impl Manager { - fn new(name :&str) -> Self { - Self { name: name.to_string(), workers: vec![] } + fn new(name: &str) -> Self { + Self { + name: name.to_string(), + workers: vec![], + } } - fn launch_workers(&mut self, nb_workers: u32, shared_queue: Arc) { + fn launch_workers( + &mut self, + nb_workers: u32, + shared_queue: Arc>, + ) { for i in 0..nb_workers { let shared_worker = Arc::new(Mutex::new(Worker::new())); @@ -126,31 +83,29 @@ impl Manager { let queue = shared_queue.clone(); let name = self.name.clone(); - thread::spawn(move || { - loop { - let mut c = queue.content.lock().unwrap(); + thread::spawn(move || loop { + let mut guard = queue.content.lock().unwrap(); - let job = loop { - if let Some(job) = c.pop_front() { - break job; - } else { - c = queue.not_empty.wait(c).unwrap(); - } - }; + let mut runner = loop { + if let Some(r) = guard.pop_front() { + break r; + } else { + guard = queue.not_empty.wait(guard).unwrap(); + } + }; - drop(c); + drop(guard); - let mut guard = worker.lock().unwrap(); - guard.set_status(WorkerStatus::Running); - drop(guard); + let mut guard = worker.lock().unwrap(); + guard.set_status(WorkerStatus::Running); + drop(guard); - println!("[worker({} - {})] launching job...", name, i); - job.run(); + println!("[worker({} - {})] launching job...", name, i); + runner.run(); - let mut guard = worker.lock().unwrap(); - guard.set_status(WorkerStatus::Pending); - drop(guard); - } + let mut guard = worker.lock().unwrap(); + guard.set_status(WorkerStatus::Pending); + drop(guard); }); } } @@ -158,11 +113,11 @@ impl Manager { fn healthcheck(&self, target: WorkerStatus) -> bool { for w in &self.workers { if w.lock().unwrap().get_status() != target { - return false + return false; } } true - } + } } #[test] @@ -171,18 +126,18 @@ fn test_manager() { use std::time::Duration; let mut m = Manager::new("deploy"); - let queue_deploy = Arc::new(Queue::new()); - let queue_check = Arc::new(Queue::new()); + let queue_deploy = Arc::new(Queue::::new()); + let queue_check = Arc::new(Queue::::new()); m.launch_workers(5, queue_deploy.clone()); - + assert_eq!(5, m.workers.len()); assert!(!m.healthcheck(WorkerStatus::Failed)); for i in 0..500 { - let j = Job::new(i, JobAction::MegaportDeploy, ""); + let j = Job::new(i, JobAction::MegaportDeploy); - queue_deploy.add_job(j); + queue_deploy.add_runner(j); } let wait = time::Duration::from_millis(200);