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Initial work on job queues for service workers

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This commit is contained in:
Rahul Sharma 2016-10-04 23:57:36 +05:30
parent 6cc1976cca
commit 114c491111
11 changed files with 462 additions and 68 deletions
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1
components/script/dom/bindings/trace.rs
View file

@ -195,7 +195,6 @@ impl JSTraceable for Heap<*mut JSObject> {
}
}
impl JSTraceable for Heap<JSVal> {
fn trace(&self, trc: *mut JSTracer) {
trace_jsval(trc, "heap value", self);

26
components/script/dom/client.rs
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@ -4,20 +4,20 @@
use dom::bindings::codegen::Bindings::ClientBinding::{ClientMethods, Wrap};
use dom::bindings::codegen::Bindings::ClientBinding::FrameType;
use dom::bindings::js::JS;
use dom::bindings::js::Root;
use dom::bindings::js::{JS, Root, MutNullableHeap};
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::bindings::str::{DOMString, USVString};
use dom::serviceworker::ServiceWorker;
use dom::window::Window;
use servo_url::ServoUrl;
use std::default::Default;
use uuid::Uuid;
#[dom_struct]
pub struct Client {
reflector_: Reflector,
active_worker: Option<JS<ServiceWorker>>,
url: USVString,
active_worker: MutNullableHeap<JS<ServiceWorker>>,
url: ServoUrl,
frame_type: FrameType,
#[ignore_heap_size_of = "Defined in uuid"]
id: Uuid
@ -27,8 +27,8 @@ impl Client {
fn new_inherited(url: ServoUrl) -> Client {
Client {
reflector_: Reflector::new(),
active_worker: None,
url: USVString(url.as_str().to_owned()),
active_worker: Default::default(),
url: url,
frame_type: FrameType::None,
id: Uuid::new_v4()
}
@ -39,12 +39,24 @@ impl Client {
window,
Wrap)
}
pub fn creation_url(&self) -> ServoUrl {
self.url.clone()
}
pub fn get_controller(&self) -> Option<Root<ServiceWorker>> {
self.active_worker.get()
}
pub fn set_controller(&self, worker: &ServiceWorker) {
self.active_worker.set(Some(worker));
}
}
impl ClientMethods for Client {
// https://w3c.github.io/ServiceWorker/#client-url-attribute
fn Url(&self) -> USVString {
self.url.clone()
USVString(self.url.as_str().to_owned())
}
// https://w3c.github.io/ServiceWorker/#client-frametype

13
components/script/dom/promise.rs
View file

@ -23,8 +23,8 @@ use js::conversions::ToJSValConvertible;
use js::jsapi::{CallOriginalPromiseResolve, CallOriginalPromiseReject, CallOriginalPromiseThen};
use js::jsapi::{JSAutoCompartment, CallArgs, JS_GetFunctionObject, JS_NewFunction};
use js::jsapi::{JSContext, HandleValue, HandleObject, IsPromiseObject, GetFunctionNativeReserved};
use js::jsapi::{JS_ClearPendingException, JSObject, AddRawValueRoot, RemoveRawValueRoot};
use js::jsapi::{MutableHandleObject, NewPromiseObject, ResolvePromise, RejectPromise};
use js::jsapi::{JS_ClearPendingException, JSObject, AddRawValueRoot, RemoveRawValueRoot, PromiseState};
use js::jsapi::{MutableHandleObject, NewPromiseObject, ResolvePromise, RejectPromise, GetPromiseState};
use js::jsapi::{SetFunctionNativeReserved, NewFunctionWithReserved, AddPromiseReactions};
use js::jsval::{JSVal, UndefinedValue, ObjectValue, Int32Value};
use std::ptr;
@ -199,6 +199,15 @@ impl Promise {
}
}
#[allow(unsafe_code)]
pub fn is_settled(&self) -> bool {
let state = unsafe { GetPromiseState(self.promise_obj()) };
match state {
PromiseState::Rejected | PromiseState::Fulfilled => true,
_ => false
}
}
#[allow(unsafe_code)]
fn promise_obj(&self) -> HandleObject {
let obj = self.reflector().get_jsobject();

6
components/script/dom/serviceworker.rs
View file

@ -46,9 +46,9 @@ impl ServiceWorker {
}
pub fn install_serviceworker(global: &GlobalScope,
script_url: ServoUrl,
scope_url: ServoUrl,
skip_waiting: bool) -> Root<ServiceWorker> {
script_url: ServoUrl,
scope_url: ServoUrl,
skip_waiting: bool) -> Root<ServiceWorker> {
reflect_dom_object(box ServiceWorker::new_inherited(script_url.as_str(),
skip_waiting,
scope_url), global, Wrap)

55
components/script/dom/serviceworkercontainer.rs
View file

@ -5,16 +5,16 @@
use dom::bindings::codegen::Bindings::ServiceWorkerContainerBinding::{ServiceWorkerContainerMethods, Wrap};
use dom::bindings::codegen::Bindings::ServiceWorkerContainerBinding::RegistrationOptions;
use dom::bindings::error::Error;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::bindings::reflector::{Reflectable, reflect_dom_object};
use dom::bindings::str::USVString;
use dom::client::Client;
use dom::eventtarget::EventTarget;
use dom::globalscope::GlobalScope;
use dom::promise::Promise;
use dom::serviceworker::ServiceWorker;
use dom::serviceworkerregistration::ServiceWorkerRegistration;
use script_thread::ScriptThread;
use serviceworkerjob::{Job, JobType};
use std::ascii::AsciiExt;
use std::default::Default;
use std::rc::Rc;
@ -23,48 +23,44 @@ use std::rc::Rc;
pub struct ServiceWorkerContainer {
eventtarget: EventTarget,
controller: MutNullableHeap<JS<ServiceWorker>>,
client: JS<Client>
}
impl ServiceWorkerContainer {
fn new_inherited() -> ServiceWorkerContainer {
fn new_inherited(client: &Client) -> ServiceWorkerContainer {
ServiceWorkerContainer {
eventtarget: EventTarget::new_inherited(),
controller: Default::default(),
client: JS::from_ref(client),
}
}
#[allow(unrooted_must_root)]
pub fn new(global: &GlobalScope) -> Root<ServiceWorkerContainer> {
reflect_dom_object(box ServiceWorkerContainer::new_inherited(), global, Wrap)
}
}
pub trait Controllable {
fn set_controller(&self, active_worker: &ServiceWorker);
}
impl Controllable for ServiceWorkerContainer {
fn set_controller(&self, active_worker: &ServiceWorker) {
self.controller.set(Some(active_worker));
self.upcast::<EventTarget>().fire_event(atom!("controllerchange"));
let client = Client::new(&global.as_window());
let container = ServiceWorkerContainer::new_inherited(&*client);
reflect_dom_object(box container, global, Wrap)
}
}
impl ServiceWorkerContainerMethods for ServiceWorkerContainer {
// https://w3c.github.io/ServiceWorker/#service-worker-container-controller-attribute
fn GetController(&self) -> Option<Root<ServiceWorker>> {
return self.controller.get()
self.client.get_controller()
}
#[allow(unrooted_must_root)]
// https://w3c.github.io/ServiceWorker/#service-worker-container-register-method
// https://w3c.github.io/ServiceWorker/#service-worker-container-register-method and - A
// https://w3c.github.io/ServiceWorker/#start-register-algorithm - B
fn Register(&self,
script_url: USVString,
options: &RegistrationOptions) -> Rc<Promise> {
// A: Step 1
let promise = Promise::new(&*self.global());
let ctx = self.global().get_cx();
let ctx = (&*self.global()).get_cx();
let USVString(ref script_url) = script_url;
let api_base_url = self.global().api_base_url();
// Step 3-4
// A: Step 3-5
let script_url = match api_base_url.join(script_url) {
Ok(url) => url,
Err(_) => {
@ -72,7 +68,7 @@ impl ServiceWorkerContainerMethods for ServiceWorkerContainer {
return promise;
}
};
// Step 5
// B: Step 2
match script_url.scheme() {
"https" | "http" => {},
_ => {
@ -80,13 +76,13 @@ impl ServiceWorkerContainerMethods for ServiceWorkerContainer {
return promise;
}
}
// Step 6
// B: Step 3
if script_url.path().to_ascii_lowercase().contains("%2f") ||
script_url.path().to_ascii_lowercase().contains("%5c") {
promise.reject_error(ctx, Error::Type("Script URL contains forbidden characters".to_owned()));
return promise;
}
// Step 8-9
// B: Step 4-5
let scope = match options.scope {
Some(ref scope) => {
let &USVString(ref inner_scope) = scope;
@ -100,7 +96,7 @@ impl ServiceWorkerContainerMethods for ServiceWorkerContainer {
},
None => script_url.join("./").unwrap()
};
// Step 11
// B: Step 6
match scope.scheme() {
"https" | "http" => {},
_ => {
@ -108,21 +104,16 @@ impl ServiceWorkerContainerMethods for ServiceWorkerContainer {
return promise;
}
}
// Step 12
// B: Step 7
if scope.path().to_ascii_lowercase().contains("%2f") ||
scope.path().to_ascii_lowercase().contains("%5c") {
promise.reject_error(ctx, Error::Type("Scope URL contains forbidden characters".to_owned()));
return promise;
}
let global = self.global();
let worker_registration = ServiceWorkerRegistration::new(&global,
script_url,
scope.clone(),
self);
ScriptThread::set_registration(scope, &*worker_registration, self.global().pipeline_id());
promise.resolve_native(ctx, &*worker_registration);
// B: Step 8
let job = Job::create_job(JobType::Register, scope, script_url, promise.clone(), &*self.client);
ScriptThread::schedule_job(job, &*self.global());
promise
}
}

38
components/script/dom/serviceworkerregistration.rs
View file

@ -10,10 +10,11 @@ use dom::bindings::str::USVString;
use dom::eventtarget::EventTarget;
use dom::globalscope::GlobalScope;
use dom::serviceworker::ServiceWorker;
use dom::serviceworkercontainer::Controllable;
use dom::workerglobalscope::prepare_workerscope_init;
use script_traits::{WorkerScriptLoadOrigin, ScopeThings};
use servo_url::ServoUrl;
use std::cell::Cell;
#[dom_struct]
pub struct ServiceWorkerRegistration {
@ -21,7 +22,8 @@ pub struct ServiceWorkerRegistration {
active: Option<JS<ServiceWorker>>,
installing: Option<JS<ServiceWorker>>,
waiting: Option<JS<ServiceWorker>>,
scope: String
scope: ServoUrl,
uninstalling: Cell<bool>
}
impl ServiceWorkerRegistration {
@ -31,17 +33,16 @@ impl ServiceWorkerRegistration {
active: Some(JS::from_ref(active_sw)),
installing: None,
waiting: None,
scope: scope.as_str().to_owned(),
scope: scope,
uninstalling: Cell::new(false)
}
}
#[allow(unrooted_must_root)]
pub fn new(global: &GlobalScope,
script_url: ServoUrl,
scope: ServoUrl,
container: &Controllable) -> Root<ServiceWorkerRegistration> {
script_url: &ServoUrl,
scope: ServoUrl) -> Root<ServiceWorkerRegistration> {
let active_worker = ServiceWorker::install_serviceworker(global, script_url.clone(), scope.clone(), true);
active_worker.set_transition_state(ServiceWorkerState::Installed);
container.set_controller(&*active_worker.clone());
reflect_dom_object(box ServiceWorkerRegistration::new_inherited(&*active_worker, scope), global, Wrap)
}
@ -49,6 +50,14 @@ impl ServiceWorkerRegistration {
self.active.as_ref().unwrap()
}
pub fn get_uninstalling(&self) -> bool {
self.uninstalling.get()
}
pub fn set_uninstalling(&self, flag: bool) {
self.uninstalling.set(flag)
}
pub fn create_scope_things(global: &GlobalScope, script_url: ServoUrl) -> ScopeThings {
let worker_load_origin = WorkerScriptLoadOrigin {
referrer_url: None,
@ -58,7 +67,7 @@ impl ServiceWorkerRegistration {
let worker_id = global.get_next_worker_id();
let devtools_chan = global.devtools_chan().cloned();
let init = prepare_workerscope_init(global, None);
let init = prepare_workerscope_init(&global, None);
ScopeThings {
script_url: script_url,
init: init,
@ -67,6 +76,17 @@ impl ServiceWorkerRegistration {
worker_id: worker_id
}
}
// https://w3c.github.io/ServiceWorker/#get-newest-worker-algorithm
pub fn get_newest_worker(&self) -> Option<Root<ServiceWorker>> {
if self.installing.as_ref().is_some() {
self.installing.as_ref().map(|sw| Root::from_ref(&**sw))
} else if self.waiting.as_ref().is_some() {
self.waiting.as_ref().map(|sw| Root::from_ref(&**sw))
} else {
self.active.as_ref().map(|sw| Root::from_ref(&**sw))
}
}
}
pub fn longest_prefix_match(stored_scope: &ServoUrl, potential_match: &ServoUrl) -> bool {
@ -100,6 +120,6 @@ impl ServiceWorkerRegistrationMethods for ServiceWorkerRegistration {
// https://w3c.github.io/ServiceWorker/#service-worker-registration-scope-attribute
fn Scope(&self) -> USVString {
USVString(self.scope.clone())
USVString(self.scope.as_str().to_owned())
}
}

14
components/script/dom/urlhelper.rs
View file

@ -92,4 +92,18 @@ impl UrlHelper {
let _ = quirks::set_username(url, &value.0);
}
}
// https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy
pub fn is_origin_trustworthy(url: &ServoUrl) -> bool {
// Step 3
if url.scheme() == "http" || url.scheme() == "wss" {
true
// Step 4
} else if url.host().is_some() {
let host = url.host_str().unwrap();
host == "127.0.0.0/8" || host == "::1/128"
// Step 5
} else {
url.scheme() == "file"
}
}
}

1
components/script/lib.rs
View file

@ -113,6 +113,7 @@ pub mod script_runtime;
#[allow(unsafe_code)]
pub mod script_thread;
mod serviceworker_manager;
mod serviceworkerjob;
mod task_source;
pub mod textinput;
mod timers;

72
components/script/script_thread.rs
View file

@ -89,6 +89,7 @@ use script_traits::{TouchEventType, TouchId, UntrustedNodeAddress, WindowSizeDat
use script_traits::CompositorEvent::{KeyEvent, MouseButtonEvent, MouseMoveEvent, ResizeEvent};
use script_traits::CompositorEvent::{TouchEvent, TouchpadPressureEvent};
use script_traits::webdriver_msg::WebDriverScriptCommand;
use serviceworkerjob::{Job, JobQueue, AsyncJobHandler, FinishJobHandler, InvokeType, SettleType};
use servo_url::ServoUrl;
use std::cell::Cell;
use std::collections::{hash_map, HashMap, HashSet};
@ -397,6 +398,8 @@ pub struct ScriptThread {
incomplete_loads: DOMRefCell<Vec<InProgressLoad>>,
/// A map to store service worker registrations for a given origin
registration_map: DOMRefCell<HashMap<ServoUrl, JS<ServiceWorkerRegistration>>>,
/// A job queue for Service Workers keyed by their scope url
job_queue_map: Rc<JobQueue>,
/// A handle to the image cache thread.
image_cache_thread: ImageCacheThread,
/// A handle to the resource thread. This is an `Arc` to avoid running out of file descriptors if
@ -561,11 +564,12 @@ impl ScriptThread {
})
}
// stores a service worker registration
pub fn set_registration(scope_url: ServoUrl, registration:&ServiceWorkerRegistration, pipeline_id: PipelineId) {
#[allow(unrooted_must_root)]
pub fn schedule_job(job: Job, global: &GlobalScope) {
SCRIPT_THREAD_ROOT.with(|root| {
let script_thread = unsafe { &*root.get().unwrap() };
script_thread.handle_serviceworker_registration(scope_url, registration, pipeline_id);
let job_queue = &*script_thread.job_queue_map;
job_queue.schedule_job(job, global, &script_thread);
});
}
@ -638,6 +642,7 @@ impl ScriptThread {
documents: DOMRefCell::new(Documents::new()),
incomplete_loads: DOMRefCell::new(vec!()),
registration_map: DOMRefCell::new(HashMap::new()),
job_queue_map: Rc::new(JobQueue::new()),
image_cache_thread: state.image_cache_thread,
image_cache_channel: ImageCacheChan(ipc_image_cache_channel),
@ -1434,33 +1439,84 @@ impl ScriptThread {
}
}
fn handle_serviceworker_registration(&self,
scope: ServoUrl,
pub fn handle_get_registration(&self, scope_url: &ServoUrl) -> Option<Root<ServiceWorkerRegistration>> {
let maybe_registration_ref = self.registration_map.borrow();
maybe_registration_ref.get(scope_url).map(|x| Root::from_ref(&**x))
}
pub fn handle_serviceworker_registration(&self,
scope: &ServoUrl,
registration: &ServiceWorkerRegistration,
pipeline_id: PipelineId) {
{
let ref mut reg_ref = *self.registration_map.borrow_mut();
// according to spec we should replace if an older registration exists for
// same scope otherwise just insert the new one
let _ = reg_ref.remove(&scope);
let _ = reg_ref.remove(scope);
reg_ref.insert(scope.clone(), JS::from_ref(registration));
}
// send ScopeThings to sw-manager
let ref maybe_registration_ref = *self.registration_map.borrow();
let maybe_registration = match maybe_registration_ref.get(&scope) {
let maybe_registration = match maybe_registration_ref.get(scope) {
Some(r) => r,
None => return
};
if let Some(window) = self.documents.borrow().find_window(pipeline_id) {
let script_url = maybe_registration.get_installed().get_script_url();
let scope_things = ServiceWorkerRegistration::create_scope_things(window.upcast(), script_url);
let _ = self.constellation_chan.send(ConstellationMsg::RegisterServiceWorker(scope_things, scope));
let _ = self.constellation_chan.send(ConstellationMsg::RegisterServiceWorker(scope_things, scope.clone()));
} else {
warn!("Registration failed for {}", scope);
}
}
pub fn dispatch_job_queue(&self, job_handler: Box<AsyncJobHandler>) {
let scope_url = job_handler.scope_url.clone();
let queue_ref = self.job_queue_map.0.borrow();
let front_job = {
let job_vec = queue_ref.get(&scope_url);
job_vec.unwrap().first().unwrap()
};
match job_handler.invoke_type {
InvokeType::Run => (&*self.job_queue_map).run_job(job_handler, self),
InvokeType::Register => self.job_queue_map.run_register(front_job, job_handler, self),
InvokeType::Update => self.job_queue_map.update(front_job, &*front_job.client.global(), self),
InvokeType::Settle(settle_type) => {
let promise = &front_job.promise;
let global = &*front_job.client.global();
let trusted_global = Trusted::new(global);
let _ac = JSAutoCompartment::new(global.get_cx(), promise.reflector().get_jsobject().get());
match settle_type {
SettleType::Resolve(reg) => promise.resolve_native(global.get_cx(), &*reg.root()),
SettleType::Reject(err) => promise.reject_error(global.get_cx(), err)
}
let finish_job_handler = box FinishJobHandler::new(scope_url, trusted_global);
self.queue_finish_job(finish_job_handler, global);
}
}
}
pub fn queue_serviceworker_job(&self, async_job_handler: Box<AsyncJobHandler>, global: &GlobalScope) {
let _ = self.dom_manipulation_task_source.queue(async_job_handler, &*global);
}
pub fn queue_finish_job(&self, finish_job_handler: Box<FinishJobHandler>, global: &GlobalScope) {
let _ = self.dom_manipulation_task_source.queue(finish_job_handler, global);
}
pub fn invoke_finish_job(&self, finish_job_handler: Box<FinishJobHandler>) {
let job_queue = &*self.job_queue_map;
let global = &*finish_job_handler.global.root();
let scope_url = (*finish_job_handler).scope_url;
job_queue.finish_job(scope_url, global, self);
}
pub fn invoke_job_update(&self, job: &Job, global: &GlobalScope) {
let job_queue = &*self.job_queue_map;
job_queue.update(job, global, self);
}
/// Handles a request for the window title.
fn handle_get_title_msg(&self, pipeline_id: PipelineId) {
let document = match self.documents.borrow().find_document(pipeline_id) {

292
components/script/serviceworkerjob.rs Normal file
View file

@ -0,0 +1,292 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! A Job is an abstraction of async operation in service worker lifecycle propagation.
//! Each Job is uniquely identified by its scope_url, and is keyed accordingly under
//! the script thread. The script thread contains a JobQueue, which stores all scheduled Jobs
//! by multiple service worker clients in a Vec.
use dom::bindings::cell::DOMRefCell;
use dom::bindings::error::Error;
use dom::bindings::js::JS;
use dom::bindings::refcounted::Trusted;
use dom::bindings::reflector::Reflectable;
use dom::client::Client;
use dom::globalscope::GlobalScope;
use dom::promise::Promise;
use dom::serviceworkerregistration::ServiceWorkerRegistration;
use dom::urlhelper::UrlHelper;
use script_thread::{ScriptThread, Runnable};
use servo_url::ServoUrl;
use std::cmp::PartialEq;
use std::collections::HashMap;
use std::rc::Rc;
#[derive(PartialEq, Clone, Debug, JSTraceable)]
pub enum JobType {
Register,
Unregister,
Update
}
#[derive(Clone)]
pub enum SettleType {
Resolve(Trusted<ServiceWorkerRegistration>),
Reject(Error)
}
// This encapsulates what operation to invoke of JobQueue from script thread
pub enum InvokeType {
Settle(SettleType),
Run,
Register,
Update
}
#[must_root]
#[derive(JSTraceable)]
pub struct Job {
pub job_type: JobType,
pub scope_url: ServoUrl,
pub script_url: ServoUrl,
pub promise: Rc<Promise>,
pub equivalent_jobs: Vec<Job>,
// client can be a window client, worker client so `Client` will be an enum in future
pub client: JS<Client>,
pub referrer: ServoUrl
}
impl Job {
#[allow(unrooted_must_root)]
// https://w3c.github.io/ServiceWorker/#create-job-algorithm
pub fn create_job(job_type: JobType,
scope_url: ServoUrl,
script_url: ServoUrl,
promise: Rc<Promise>,
client: &Client) -> Job {
Job {
job_type: job_type,
scope_url: scope_url,
script_url: script_url,
promise: promise,
equivalent_jobs: vec![],
client: JS::from_ref(client),
referrer: client.creation_url()
}
}
#[allow(unrooted_must_root)]
pub fn append_equivalent_job(&mut self, job: Job) {
self.equivalent_jobs.push(job);
}
}
impl PartialEq for Job {
// Equality criteria as described in https://w3c.github.io/ServiceWorker/#dfn-job-equivalent
fn eq(&self, other: &Self) -> bool {
let same_job = self.job_type == other.job_type;
if same_job {
match self.job_type {
JobType::Register | JobType::Update => {
self.scope_url == other.scope_url && self.script_url == other.script_url
},
JobType::Unregister => self.scope_url == other.scope_url
}
} else {
false
}
}
}
pub struct FinishJobHandler {
pub scope_url: ServoUrl,
pub global: Trusted<GlobalScope>,
}
impl FinishJobHandler {
pub fn new(scope_url: ServoUrl, global: Trusted<GlobalScope>) -> FinishJobHandler {
FinishJobHandler {
scope_url: scope_url,
global: global
}
}
}
impl Runnable for FinishJobHandler {
fn main_thread_handler(self: Box<FinishJobHandler>, script_thread: &ScriptThread) {
script_thread.invoke_finish_job(self);
}
}
pub struct AsyncJobHandler {
pub scope_url: ServoUrl,
pub invoke_type: InvokeType
}
impl AsyncJobHandler {
fn new(scope_url: ServoUrl, invoke_type: InvokeType) -> AsyncJobHandler {
AsyncJobHandler {
scope_url: scope_url,
invoke_type: invoke_type
}
}
}
impl Runnable for AsyncJobHandler {
#[allow(unrooted_must_root)]
fn main_thread_handler(self: Box<AsyncJobHandler>, script_thread: &ScriptThread) {
script_thread.dispatch_job_queue(self);
}
}
#[must_root]
#[derive(JSTraceable)]
pub struct JobQueue(pub DOMRefCell<HashMap<ServoUrl, Vec<Job>>>);
impl JobQueue {
pub fn new() -> JobQueue {
JobQueue(DOMRefCell::new(HashMap::new()))
}
#[allow(unrooted_must_root)]
// https://w3c.github.io/ServiceWorker/#schedule-job-algorithm
pub fn schedule_job(&self,
job: Job,
global: &GlobalScope,
script_thread: &ScriptThread) {
let mut queue_ref = self.0.borrow_mut();
let job_queue = queue_ref.entry(job.scope_url.clone()).or_insert(vec![]);
// Step 1
if job_queue.is_empty() {
let scope_url = job.scope_url.clone();
job_queue.push(job);
let run_job_handler = AsyncJobHandler::new(scope_url, InvokeType::Run);
script_thread.queue_serviceworker_job(box run_job_handler, global);
} else {
// Step 2
let mut last_job = job_queue.pop().unwrap();
if job == last_job && !last_job.promise.is_settled() {
last_job.append_equivalent_job(job);
job_queue.push(last_job);
} else {
// restore the popped last_job
job_queue.push(last_job);
// and push this new job to job queue
job_queue.push(job);
}
}
}
#[allow(unrooted_must_root)]
// https://w3c.github.io/ServiceWorker/#run-job-algorithm
pub fn run_job(&self, run_job_handler: Box<AsyncJobHandler>, script_thread: &ScriptThread) {
let queue_ref = &*self.0.borrow();
let front_job = {
let job_vec = queue_ref.get(&run_job_handler.scope_url);
job_vec.unwrap().first().unwrap()
};
let global = &*front_job.client.global();
let handler = *run_job_handler;
match front_job.job_type {
JobType::Register => {
let register_job_handler = AsyncJobHandler::new(handler.scope_url, InvokeType::Register);
script_thread.queue_serviceworker_job(box register_job_handler, global);
},
JobType::Update => {
let update_job_handler = AsyncJobHandler::new(handler.scope_url, InvokeType::Update);
script_thread.queue_serviceworker_job(box update_job_handler, global);
}
_ => { /* TODO implement Unregister */ }
}
}
#[allow(unrooted_must_root)]
// https://w3c.github.io/ServiceWorker/#register-algorithm
pub fn run_register(&self, job: &Job, register_job_handler: Box<AsyncJobHandler>, script_thread: &ScriptThread) {
let global = &*job.client.global();
let AsyncJobHandler { scope_url, .. } = *register_job_handler;
// Step 1-3
if !UrlHelper::is_origin_trustworthy(&job.script_url) {
let settle_type = SettleType::Reject(Error::Type("Invalid script ServoURL".to_owned()));
let async_job_handler = AsyncJobHandler::new(scope_url, InvokeType::Settle(settle_type));
return script_thread.queue_serviceworker_job(box async_job_handler, global);
} else if job.script_url.origin() != job.referrer.origin() || job.scope_url.origin() != job.referrer.origin() {
let settle_type = SettleType::Reject(Error::Security);
let async_job_handler = AsyncJobHandler::new(scope_url, InvokeType::Settle(settle_type));
return script_thread.queue_serviceworker_job(box async_job_handler, global);
}
// Step 4-5
if let Some(reg) = script_thread.handle_get_registration(&job.scope_url) {
// Step 5.1
if reg.get_uninstalling() {
reg.set_uninstalling(false);
}
// Step 5.3
if let Some(ref newest_worker) = reg.get_newest_worker() {
if (&*newest_worker).get_script_url() == job.script_url {
let settle_type = SettleType::Resolve(Trusted::new(&*reg));
let async_job_handler = AsyncJobHandler::new(scope_url, InvokeType::Settle(settle_type));
script_thread.queue_serviceworker_job(box async_job_handler, global);
let finish_job_handler = box FinishJobHandler::new(job.scope_url.clone(), Trusted::new(&*global));
script_thread.queue_finish_job(finish_job_handler, &*global);
}
}
} else {
// Step 6.1
let pipeline = global.pipeline_id();
let new_reg = ServiceWorkerRegistration::new(&*global, &job.script_url, scope_url);
script_thread.handle_serviceworker_registration(&job.scope_url, &*new_reg, pipeline);
}
// Step 7
script_thread.invoke_job_update(job, &*global);
}
#[allow(unrooted_must_root)]
// https://w3c.github.io/ServiceWorker/#finish-job-algorithm
pub fn finish_job(&self, scope_url: ServoUrl, global: &GlobalScope, script_thread: &ScriptThread) {
if let Some(job_vec) = (*self.0.borrow_mut()).get_mut(&scope_url) {
if job_vec.first().map_or(false, |job| job.scope_url == scope_url) {
let _ = job_vec.remove(0);
}
if !job_vec.is_empty() {
let run_job_handler = AsyncJobHandler::new(scope_url, InvokeType::Run);
script_thread.queue_serviceworker_job(box run_job_handler, global);
}
} else {
warn!("non-existent job vector for Servourl: {:?}", scope_url);
}
}
// https://w3c.github.io/ServiceWorker/#update-algorithm
pub fn update(&self, job: &Job, global: &GlobalScope, script_thread: &ScriptThread) {
let reg = match script_thread.handle_get_registration(&job.scope_url) {
Some(reg) => reg,
None => return
};
// Step 1
if reg.get_uninstalling() {
let err_type = Error::Type("Update called on an uninstalling registration".to_owned());
let settle_type = SettleType::Reject(err_type);
let async_job_handler = AsyncJobHandler::new(job.scope_url.clone(), InvokeType::Settle(settle_type));
return script_thread.queue_serviceworker_job(box async_job_handler, global);
}
let newest_worker = match reg.get_newest_worker() {
Some(worker) => worker,
None => return
};
// Step 2
if (&*newest_worker).get_script_url() == job.script_url && job.job_type == JobType::Update {
// Step 4
let err_type = Error::Type("Invalid script ServoURL".to_owned());
let settle_type = SettleType::Reject(err_type);
let async_job_handler = AsyncJobHandler::new(job.scope_url.clone(), InvokeType::Settle(settle_type));
script_thread.queue_serviceworker_job(box async_job_handler, global);
} else {
job.client.set_controller(&*newest_worker);
let settle_type = SettleType::Resolve(Trusted::new(&*reg));
let async_job_handler = AsyncJobHandler::new(job.scope_url.clone(), InvokeType::Settle(settle_type));
script_thread.queue_serviceworker_job(box async_job_handler, global);
}
let finish_job_handler = box FinishJobHandler::new(job.scope_url.clone(), Trusted::new(global));
script_thread.queue_finish_job(finish_job_handler, global);
}
}