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": "020ab647-667b-40b9-95e7-987b0d872e66",
"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": {
"045f4add-275f-4413-975f-affbf9ed5bed": {
"id": "045f4add-275f-4413-975f-affbf9ed5bed",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_warehouse"
},
"e0829da5-f615-437f-aae2-53060a5dba79": {
"id": "e0829da5-f615-437f-aae2-53060a5dba79",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_accounting"
},
"ae035cd5-e8c7-4b58-894b-c1d5e1efe964": {
"id": "ae035cd5-e8c7-4b58-894b-c1d5e1efe964",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_delivery"
},
"3df97e1d-420b-4910-855a-4dbfc9f57fad": {
"id": "3df97e1d-420b-4910-855a-4dbfc9f57fad",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_warehouse",
"to": "join"
},
"1b325a8e-06e0-44f0-9196-78e4bf5a9bdf": {
"id": "1b325a8e-06e0-44f0-9196-78e4bf5a9bdf",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_accounting",
"to": "join"
},
"a5893744-d4fb-4080-a534-3495ac1adfc3": {
"id": "a5893744-d4fb-4080-a534-3495ac1adfc3",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_delivery",
"to": "join"
},
"ea4fa5c6-a7e2-43d9-aa93-77147a4de873": {
"id": "ea4fa5c6-a7e2-43d9-aa93-77147a4de873",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "join",
"to": "notify_customer"
},
"95d0214f-c10e-474d-a2af-68af6fc1567b": {
"id": "95d0214f-c10e-474d-a2af-68af6fc1567b",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"to": "fork"
}
},
"outTransitions": {
"fork": [
"045f4add-275f-4413-975f-affbf9ed5bed",
"e0829da5-f615-437f-aae2-53060a5dba79",
"ae035cd5-e8c7-4b58-894b-c1d5e1efe964"
],
"update_warehouse": [
"3df97e1d-420b-4910-855a-4dbfc9f57fad"
],
"update_accounting": [
"1b325a8e-06e0-44f0-9196-78e4bf5a9bdf"
],
"update_delivery": [
"a5893744-d4fb-4080-a534-3495ac1adfc3"
],
"join": [
"ea4fa5c6-a7e2-43d9-aa93-77147a4de873"
]
},
"inTransitions": {
"update_warehouse": [
"045f4add-275f-4413-975f-affbf9ed5bed"
],
"update_accounting": [
"e0829da5-f615-437f-aae2-53060a5dba79"
],
"update_delivery": [
"ae035cd5-e8c7-4b58-894b-c1d5e1efe964"
],
"join": [
"3df97e1d-420b-4910-855a-4dbfc9f57fad",
"1b325a8e-06e0-44f0-9196-78e4bf5a9bdf",
"a5893744-d4fb-4080-a534-3495ac1adfc3"
],
"notify_customer": [
"ea4fa5c6-a7e2-43d9-aa93-77147a4de873"
],
"fork": [
"95d0214f-c10e-474d-a2af-68af6fc1567b"
]
},
"tokens": {
"dc032c6d-6e99-4520-969b-56264f52207f": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "dc032c6d-6e99-4520-969b-56264f52207f",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "63cb4e27-d684-4c53-b700-589740d0a4ad",
"transitionId": "95d0214f-c10e-474d-a2af-68af6fc1567b",
"weight": 1,
"state": "opened",
"time": 15606694706151
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "3ae53faa-5faf-4fec-8969-8887a3e083c5",
"transitionId": "95d0214f-c10e-474d-a2af-68af6fc1567b",
"weight": 1,
"state": "passed",
"time": 15606694706155
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "f245ad4c-dddf-4beb-b1f9-b9b798dd69a8",
"transitionId": "045f4add-275f-4413-975f-affbf9ed5bed",
"weight": 1,
"state": "opened",
"time": 15606694706158
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "545d2303-f89f-4ee2-bfb8-d1b1f63c1b12",
"transitionId": "045f4add-275f-4413-975f-affbf9ed5bed",
"weight": 1,
"state": "passed",
"time": 15606694706162
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "7658b2d6-68fd-4482-b37b-31212d3ce61b",
"transitionId": "3df97e1d-420b-4910-855a-4dbfc9f57fad",
"weight": 1,
"state": "opened",
"time": 15606694706165
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "307938d7-7e82-4c13-b5aa-065a6c2e9fd2",
"transitionId": "3df97e1d-420b-4910-855a-4dbfc9f57fad",
"weight": 1,
"state": "interrupted",
"time": 15606694706170,
"reason": ""
}
]
},
"8055f392-f8b0-44c3-b393-b499667feba2": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "8055f392-f8b0-44c3-b393-b499667feba2",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "db994256-209e-4607-98bd-5445e5658967",
"transitionId": "e0829da5-f615-437f-aae2-53060a5dba79",
"weight": 1,
"state": "opened",
"time": 15606694706175
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "e887aba0-094e-4e67-9985-bee7d7b0d1cf",
"transitionId": "e0829da5-f615-437f-aae2-53060a5dba79",
"weight": 1,
"state": "passed",
"time": 15606694706180
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "c879ed1a-00fd-44db-b242-80cfefa59f77",
"transitionId": "1b325a8e-06e0-44f0-9196-78e4bf5a9bdf",
"weight": 1,
"state": "opened",
"time": 15606694706184
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "b70a4f15-880a-4261-8cdd-b5d4cd6b787c",
"transitionId": "1b325a8e-06e0-44f0-9196-78e4bf5a9bdf",
"weight": 1,
"state": "interrupted",
"time": 15606694706188,
"reason": ""
}
]
},
"148c9627-bb8d-4df2-9c13-bb8580a47cd2": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "148c9627-bb8d-4df2-9c13-bb8580a47cd2",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "f8ba120f-bf78-466e-9360-9537e574953a",
"transitionId": "ae035cd5-e8c7-4b58-894b-c1d5e1efe964",
"weight": 1,
"state": "opened",
"time": 15606694706191
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "d1f3fd49-557b-4c82-9f19-6c3ea4ac2c65",
"transitionId": "ae035cd5-e8c7-4b58-894b-c1d5e1efe964",
"weight": 1,
"state": "passed",
"time": 15606694706195
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "36946607-3e0a-4c48-a718-7eb13de866b9",
"transitionId": "a5893744-d4fb-4080-a534-3495ac1adfc3",
"weight": 1,
"state": "opened",
"time": 15606694706198
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "9d6b6d81-d6e0-493e-85ae-0ca71a4e127a",
"transitionId": "a5893744-d4fb-4080-a534-3495ac1adfc3",
"weight": 1,
"state": "passed",
"time": 15606694706202
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "2fba25f5-e2cf-457d-b3d3-fc12f8379fe8",
"transitionId": "ea4fa5c6-a7e2-43d9-aa93-77147a4de873",
"weight": 1,
"state": "opened",
"time": 15606694706205
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "1092d3d5-f2fb-47f5-b74c-8005b6fb9ab8",
"transitionId": "ea4fa5c6-a7e2-43d9-aa93-77147a4de873",
"weight": 1,
"state": "passed",
"time": 15606694706209
}
]
}
}
}