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Author | SHA1 | Date |
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Tristan B. Velloza Kildaire | 42c6b111c8 | |
Tristan B. Velloza Kildaire | 761ddb2d1e | |
Tristan B. Velloza Kildaire | a23017a747 | |
Tristan B. Velloza Kildaire | 459f4a8709 |
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@ -6,9 +6,9 @@ name: D
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on:
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push:
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branches: [ "master" ]
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branches: [ "**" ]
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pull_request:
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branches: [ "master", "nextgen" ]
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branches: [ "**" ]
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permissions:
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contents: read
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@ -22,6 +22,11 @@ jobs:
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- uses: actions/checkout@v3
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- uses: dlang-community/setup-dlang@4c99aa991ce7d19dd3064de0a4f2f6b2f152e2d7
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- name: Install Doveralls (code coverage tool)
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run: |
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dub fetch doveralls
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sudo apt install libcurl4-openssl-dev
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- name: 'Build & Test'
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run: |
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# Build the project, with its main file included, without unittests
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@ -29,4 +34,8 @@ jobs:
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# Build and run tests, as defined by `unittest` configuration
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# In this mode, `mainSourceFile` is excluded and `version (unittest)` are included
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# See https://dub.pm/package-format-json.html#configurations
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dub test --compiler=$DC
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dub test --compiler=$DC --coverage
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- name: Coverage upload
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run: |
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dub run doveralls -- -t ${{secrets.COVERALLS_REPO_TOKEN}}
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@ -3,7 +3,8 @@
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tristanable
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===========
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[![D](https://github.com/deavmi/tristanable/actions/workflows/d.yml/badge.svg)](https://github.com/deavmi/tristanable/actions/workflows/d.yml)
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[![D](https://github.com/deavmi/tristanable/actions/workflows/d.yml/badge.svg)](https://github.com/deavmi/tristanable/actions/workflows/d.yml) ![DUB](https://img.shields.io/dub/v/tristanable?color=%23c10000ff%20&style=flat-square) ![DUB](https://img.shields.io/dub/dt/tristanable?style=flat-square) ![DUB](https://img.shields.io/dub/l/tristanable?style=flat-square) [![Coverage Status](https://coveralls.io/repos/github/deavmi/tristanable/badge.svg?branch=master)](https://coveralls.io/github/deavmi/tristanable?branch=master)
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**Tristanable** is a library for D-based libraries and applications that need a way to receive variable-length messages of different types (via a `Socket`) and place these messages into their own respectively tagged queues indicated by their _"type"_ or `id`.
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3
dub.json
3
dub.json
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@ -4,8 +4,7 @@
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],
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"copyright": "Copyright © 2023, Tristan B. Kildaire",
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"dependencies": {
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"bformat": ">=4.1.1",
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"libsnooze": ">=1.3.0-beta"
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"bformat": ">=4.1.1"
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},
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"description": "Tristanable network message queuing framework",
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"homepage": "https://deavmi.assigned.network/projects/tristanable",
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@ -3,14 +3,12 @@
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*/
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module tristanable.queue;
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// TODO: Examine the below import which seemingly fixes stuff for libsnooze
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import libsnooze.clib;
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import libsnooze;
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import core.sync.mutex : Mutex;
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import core.sync.condition : Condition;
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import core.sync.exception : SyncError;
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import std.container.slist : SList;
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import tristanable.encoding;
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import core.thread : dur;
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import core.time : Duration, dur;
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import tristanable.exceptions;
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version(unittest)
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@ -27,10 +25,15 @@ version(unittest)
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public class Queue
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{
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/**
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* The libsnooze event used to sleep/wake
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* on queue events
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* Mutex for the condition variable
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*/
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private Event event;
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private Mutex mutex;
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/**
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* The condition variable used to sleep/wake
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* on queue of events
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*/
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private Condition signal;
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/**
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* The queue of messages
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@ -47,6 +50,15 @@ public class Queue
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*/
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private ulong queueID;
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/**
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* If a message is enqueued prior
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* to us sleeping then we won't
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* wake up and return for it.
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*
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* Therefore a periodic wakeup
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* is required.
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*/
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private Duration wakeInterval;
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/**
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* Constructs a new Queue and immediately sets up the notification
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@ -62,14 +74,37 @@ public class Queue
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/* Initialize the queue lock */
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this.queueLock = new Mutex();
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/* Initialize the event */
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this.event = new Event();
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/* Initialize the condition variable */
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this.mutex = new Mutex();
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this.signal = new Condition(this.mutex);
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/* Set the queue id */
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this.queueID = queueID;
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/* Ensure pipe existence (see https://deavmi.assigned.network/git/deavmi/tristanable/issues/5) */
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event.wait(dur!("seconds")(0));
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/* Set the slumber interval */
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this.wakeInterval = dur!("msecs")(50); // TODO: Decide on value
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}
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/**
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* Returns the current wake interval
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* for the queue checker
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*
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* Returns: the `Duration`
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*/
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public Duration getWakeInterval()
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{
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return this.wakeInterval;
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}
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/**
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* Sets the wake up interval
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*
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* Params:
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* interval = the new interval
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*/
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public void setWakeInterval(Duration interval)
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{
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this.wakeInterval = interval;
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}
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/**
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@ -111,9 +146,9 @@ public class Queue
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try
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{
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// TODO: Make us wait on the event (optional with a time-out)
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event.notifyAll();
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signal.notifyAll();
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}
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catch(FatalException snozErr)
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catch(SyncError snozErr)
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{
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// Throw an exception on a fatal exception
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throw new TristanableException(ErrorType.ENQUEUE_FAILED);
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@ -151,45 +186,25 @@ public class Queue
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/* Block till we dequeue a message successfully */
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while(dequeuedMessage is null)
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{
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/**
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* Call `wait()` and catch any interrupts
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* in which case loop back and call `wait()`
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* again
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*/
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while(true)
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scope(exit)
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{
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// Unlock the mutex
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this.mutex.unlock();
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}
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// Lock the mutex
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this.mutex.lock();
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try
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{
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// TODO: Make us wait on the event (optional with a time-out)
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event.wait();
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this.signal.wait(this.wakeInterval);
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}
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catch(InterruptedException e)
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catch(SyncError e)
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{
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version(unittest)
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{
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import std.stdio;
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writeln("dequeue() had libsnooze wait() get interrupted!");
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}
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// Retry the wait()
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continue;
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}
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catch(FatalException fatalErr)
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{
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version(unittest)
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{
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import std.stdio;
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writeln("dequeue() had libsnooze wait() get FATALLY fail! Exception will now throw...");
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}
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// Throw an exception on a fatal exception
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throw new TristanableException(ErrorType.DEQUEUE_FAILED);
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}
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// On successful wait() wake-up exit this wait()-retry loop
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break;
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}
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/* Lock the item queue */
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queueLock.lock();
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