An example demonstrate how one task could be execute only when other tasks are finished.
For example you have to make sure all your services are updated with new data before you notify customer.
mkdir ~/pvm-synchronization
cd ~/pvm-synchronization
composer req formapro/pvm:0.4.x-dev makasim/values:0.5.x-dev
# create such file with the code below
php synchronization.php
synchronization.php
fork
update_warehouse
wait for other tasks to be finished
update_accounting
wait for other tasks to be finished
update_delivery
notify_customer
synchronization.php
<?php
use Formapro\Pvm\DefaultBehaviorRegistry;
use Formapro\Pvm\Exception\InterruptExecutionException;
use Formapro\Pvm\ProcessEngine;
use Formapro\Pvm\Token;
use Formapro\Pvm\ProcessBuilder;
require_once __DIR__.'/vendor/autoload.php';
$process = (new ProcessBuilder())
->createNode('fork', 'print_label')->end()
->createNode('update_warehouse', 'print_label')->end()
->createNode('update_accounting', 'print_label')->end()
->createNode('update_delivery', 'print_label')->end()
->createNode('notify_customer', 'print_label')->end()
->createNode('join', 'join')->end()
->createTransition('fork', 'update_warehouse')->end()
->createTransition('fork', 'update_accounting')->end()
->createTransition('fork', 'update_delivery')->end()
->createTransition('update_warehouse', 'join')->end()
->createTransition('update_accounting', 'join')->end()
->createTransition('update_delivery', 'join')->end()
->createTransition('join', 'notify_customer')->end()
->createStartTransition('fork')->end()
->getProcess()
;
$engine = new ProcessEngine(new DefaultBehaviorRegistry([
'print_label' => function(Token $token) {
echo $token->getTo()->getId().PHP_EOL;
},
'join' => function (Token $token) {
static $weight = 0;
$weight += $token->getCurrentTransition()->getWeight();
if ($weight === 3) {
return;
}
echo 'wait for other tasks to be finished'.PHP_EOL;
throw new InterruptExecutionException();
}
]));
$token = $engine->createTokenFor($process->getStartTransition());
$engine->proceed($token);
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Process.json",
"id": "fcafa354-d5e7-4da9-a7cc-a8499dc9eb5d",
"nodes": {
"fork": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Node.json",
"id": "fork",
"behavior": "print_label"
},
"update_warehouse": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Node.json",
"id": "update_warehouse",
"behavior": "print_label"
},
"update_accounting": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Node.json",
"id": "update_accounting",
"behavior": "print_label"
},
"update_delivery": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Node.json",
"id": "update_delivery",
"behavior": "print_label"
},
"notify_customer": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Node.json",
"id": "notify_customer",
"behavior": "print_label"
},
"join": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Node.json",
"id": "join",
"behavior": "join"
}
},
"transitions": {
"490caa81-e666-445a-a638-2fa9a7f7a9b7": {
"id": "490caa81-e666-445a-a638-2fa9a7f7a9b7",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_warehouse"
},
"39434703-832e-431b-8041-5e8286b85ed0": {
"id": "39434703-832e-431b-8041-5e8286b85ed0",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_accounting"
},
"88b9f54e-57c1-4cb0-8b34-47a98271bb36": {
"id": "88b9f54e-57c1-4cb0-8b34-47a98271bb36",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_delivery"
},
"25a4e822-fab1-457c-a4ff-79a06485abdc": {
"id": "25a4e822-fab1-457c-a4ff-79a06485abdc",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_warehouse",
"to": "join"
},
"dc158c75-41a1-40a6-9746-926b41ded7f4": {
"id": "dc158c75-41a1-40a6-9746-926b41ded7f4",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_accounting",
"to": "join"
},
"d8fc387f-1706-486d-a8b5-b02e476c2274": {
"id": "d8fc387f-1706-486d-a8b5-b02e476c2274",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_delivery",
"to": "join"
},
"90205053-585c-4e73-a90a-d93e7a4e9c50": {
"id": "90205053-585c-4e73-a90a-d93e7a4e9c50",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "join",
"to": "notify_customer"
},
"77ed8a20-c886-46cc-bde6-215ca1c70e3d": {
"id": "77ed8a20-c886-46cc-bde6-215ca1c70e3d",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"to": "fork"
}
},
"outTransitions": {
"fork": [
"490caa81-e666-445a-a638-2fa9a7f7a9b7",
"39434703-832e-431b-8041-5e8286b85ed0",
"88b9f54e-57c1-4cb0-8b34-47a98271bb36"
],
"update_warehouse": [
"25a4e822-fab1-457c-a4ff-79a06485abdc"
],
"update_accounting": [
"dc158c75-41a1-40a6-9746-926b41ded7f4"
],
"update_delivery": [
"d8fc387f-1706-486d-a8b5-b02e476c2274"
],
"join": [
"90205053-585c-4e73-a90a-d93e7a4e9c50"
]
},
"inTransitions": {
"update_warehouse": [
"490caa81-e666-445a-a638-2fa9a7f7a9b7"
],
"update_accounting": [
"39434703-832e-431b-8041-5e8286b85ed0"
],
"update_delivery": [
"88b9f54e-57c1-4cb0-8b34-47a98271bb36"
],
"join": [
"25a4e822-fab1-457c-a4ff-79a06485abdc",
"dc158c75-41a1-40a6-9746-926b41ded7f4",
"d8fc387f-1706-486d-a8b5-b02e476c2274"
],
"notify_customer": [
"90205053-585c-4e73-a90a-d93e7a4e9c50"
],
"fork": [
"77ed8a20-c886-46cc-bde6-215ca1c70e3d"
]
},
"tokens": {
"11f62245-bbf1-4faa-883c-1eb56572847d": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "11f62245-bbf1-4faa-883c-1eb56572847d",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "baacf5d1-585d-487b-9674-fffc5b2d29ac",
"transitionId": "77ed8a20-c886-46cc-bde6-215ca1c70e3d",
"weight": 1,
"state": "opened",
"time": 16031647624286
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "358e9246-7362-4261-b944-cd404a692f70",
"transitionId": "77ed8a20-c886-46cc-bde6-215ca1c70e3d",
"weight": 1,
"state": "passed",
"time": 16031647624290
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "605b0886-b4af-4b75-92e4-ff376f125fda",
"transitionId": "490caa81-e666-445a-a638-2fa9a7f7a9b7",
"weight": 1,
"state": "opened",
"time": 16031647624293
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "59042255-0fdf-4057-88f1-97130a66f80b",
"transitionId": "490caa81-e666-445a-a638-2fa9a7f7a9b7",
"weight": 1,
"state": "passed",
"time": 16031647624296
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "35a0ac5b-f94f-409c-be60-f710b2354685",
"transitionId": "25a4e822-fab1-457c-a4ff-79a06485abdc",
"weight": 1,
"state": "opened",
"time": 16031647624299
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "9c973da5-d21c-4490-86d5-d5c07a69c7bb",
"transitionId": "25a4e822-fab1-457c-a4ff-79a06485abdc",
"weight": 1,
"state": "interrupted",
"time": 16031647624303,
"reason": ""
}
]
},
"25f87c23-0af2-4425-b916-ca016e57c6a6": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "25f87c23-0af2-4425-b916-ca016e57c6a6",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "e7edcea7-a314-4b7c-a231-d4f534295620",
"transitionId": "39434703-832e-431b-8041-5e8286b85ed0",
"weight": 1,
"state": "opened",
"time": 16031647624307
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "cad748e5-db3a-4aa5-b437-caa67f7a5dc9",
"transitionId": "39434703-832e-431b-8041-5e8286b85ed0",
"weight": 1,
"state": "passed",
"time": 16031647624311
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "0b11cac6-ac5d-495b-b04a-3850513cd4b1",
"transitionId": "dc158c75-41a1-40a6-9746-926b41ded7f4",
"weight": 1,
"state": "opened",
"time": 16031647624314
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "b20c69a3-30a9-426a-99cb-e39b3fcc8b58",
"transitionId": "dc158c75-41a1-40a6-9746-926b41ded7f4",
"weight": 1,
"state": "interrupted",
"time": 16031647624318,
"reason": ""
}
]
},
"7a2f7f96-9285-4a1e-a061-5fef612baf10": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "7a2f7f96-9285-4a1e-a061-5fef612baf10",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "db02a486-771d-4cce-9c3e-b105e98dddfe",
"transitionId": "88b9f54e-57c1-4cb0-8b34-47a98271bb36",
"weight": 1,
"state": "opened",
"time": 16031647624321
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "bbbcd156-033e-4524-81e4-bd89772875b0",
"transitionId": "88b9f54e-57c1-4cb0-8b34-47a98271bb36",
"weight": 1,
"state": "passed",
"time": 16031647624325
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "6587a81e-20ff-41b3-8d68-85a9859cf1d7",
"transitionId": "d8fc387f-1706-486d-a8b5-b02e476c2274",
"weight": 1,
"state": "opened",
"time": 16031647624327
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "edda07f4-f5d7-4f39-9b9c-5de9195890c5",
"transitionId": "d8fc387f-1706-486d-a8b5-b02e476c2274",
"weight": 1,
"state": "passed",
"time": 16031647624331
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "0e91bebb-2466-40ab-92fc-387978b573ce",
"transitionId": "90205053-585c-4e73-a90a-d93e7a4e9c50",
"weight": 1,
"state": "opened",
"time": 16031647624333
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "49a8e64b-fd27-47be-ac62-748550fea536",
"transitionId": "90205053-585c-4e73-a90a-d93e7a4e9c50",
"weight": 1,
"state": "passed",
"time": 16031647624337
}
]
}
}
}