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": "69f8b15b-bad9-430a-8295-242e5cb48354",
"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": {
"53b74b1a-9db1-4f59-b30c-27bbb63396c7": {
"id": "53b74b1a-9db1-4f59-b30c-27bbb63396c7",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_warehouse"
},
"0306977e-a465-4f8e-89e9-9672198a4b66": {
"id": "0306977e-a465-4f8e-89e9-9672198a4b66",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_accounting"
},
"4ac04735-4649-4a68-a53c-0a51e2a451fb": {
"id": "4ac04735-4649-4a68-a53c-0a51e2a451fb",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "fork",
"to": "update_delivery"
},
"e45b48ca-9bad-4cdb-9ead-f06db74681cf": {
"id": "e45b48ca-9bad-4cdb-9ead-f06db74681cf",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_warehouse",
"to": "join"
},
"229adf6b-44a0-4a70-a6cc-84fedf4df99b": {
"id": "229adf6b-44a0-4a70-a6cc-84fedf4df99b",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_accounting",
"to": "join"
},
"26bf69d6-b027-4aa8-9da7-ddab61276671": {
"id": "26bf69d6-b027-4aa8-9da7-ddab61276671",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "update_delivery",
"to": "join"
},
"8e4dbb6f-3556-4010-9778-7d15cd075eeb": {
"id": "8e4dbb6f-3556-4010-9778-7d15cd075eeb",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"from": "join",
"to": "notify_customer"
},
"92d0b972-3c46-4c86-84db-ae1e53f94410": {
"id": "92d0b972-3c46-4c86-84db-ae1e53f94410",
"weight": 1,
"async": false,
"active": true,
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Transition.json",
"to": "fork"
}
},
"outTransitions": {
"fork": [
"53b74b1a-9db1-4f59-b30c-27bbb63396c7",
"0306977e-a465-4f8e-89e9-9672198a4b66",
"4ac04735-4649-4a68-a53c-0a51e2a451fb"
],
"update_warehouse": [
"e45b48ca-9bad-4cdb-9ead-f06db74681cf"
],
"update_accounting": [
"229adf6b-44a0-4a70-a6cc-84fedf4df99b"
],
"update_delivery": [
"26bf69d6-b027-4aa8-9da7-ddab61276671"
],
"join": [
"8e4dbb6f-3556-4010-9778-7d15cd075eeb"
]
},
"inTransitions": {
"update_warehouse": [
"53b74b1a-9db1-4f59-b30c-27bbb63396c7"
],
"update_accounting": [
"0306977e-a465-4f8e-89e9-9672198a4b66"
],
"update_delivery": [
"4ac04735-4649-4a68-a53c-0a51e2a451fb"
],
"join": [
"e45b48ca-9bad-4cdb-9ead-f06db74681cf",
"229adf6b-44a0-4a70-a6cc-84fedf4df99b",
"26bf69d6-b027-4aa8-9da7-ddab61276671"
],
"notify_customer": [
"8e4dbb6f-3556-4010-9778-7d15cd075eeb"
],
"fork": [
"92d0b972-3c46-4c86-84db-ae1e53f94410"
]
},
"tokens": {
"5c6b5aea-8cbc-48a9-81da-4af631a94638": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "5c6b5aea-8cbc-48a9-81da-4af631a94638",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "022f74b5-8226-4dfa-8189-98c99067befe",
"transitionId": "92d0b972-3c46-4c86-84db-ae1e53f94410",
"weight": 1,
"state": "opened",
"time": 16107350316896
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "b0aa11e4-034d-429c-a5aa-1b8e53ecbcee",
"transitionId": "92d0b972-3c46-4c86-84db-ae1e53f94410",
"weight": 1,
"state": "passed",
"time": 16107350316900
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "24132ece-7fde-4562-ab4b-d611b743147c",
"transitionId": "53b74b1a-9db1-4f59-b30c-27bbb63396c7",
"weight": 1,
"state": "opened",
"time": 16107350316903
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "0f35e344-6370-462b-b475-8f208ae1dbfd",
"transitionId": "53b74b1a-9db1-4f59-b30c-27bbb63396c7",
"weight": 1,
"state": "passed",
"time": 16107350316909
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "9396c4fc-032d-4d62-a15a-56e9fd0552f8",
"transitionId": "e45b48ca-9bad-4cdb-9ead-f06db74681cf",
"weight": 1,
"state": "opened",
"time": 16107350316912
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "687e4e41-a06a-48d5-a71b-d2741f9d1a19",
"transitionId": "e45b48ca-9bad-4cdb-9ead-f06db74681cf",
"weight": 1,
"state": "interrupted",
"time": 16107350316916,
"reason": ""
}
]
},
"7c7471aa-a2e6-4b9b-a6ba-aecf16df174c": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "7c7471aa-a2e6-4b9b-a6ba-aecf16df174c",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "a9200365-3ccd-41c2-bb63-e16b3c3d718b",
"transitionId": "0306977e-a465-4f8e-89e9-9672198a4b66",
"weight": 1,
"state": "opened",
"time": 16107350316920
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "a946e6ef-9141-4a04-a3b6-e45dfebc34ad",
"transitionId": "0306977e-a465-4f8e-89e9-9672198a4b66",
"weight": 1,
"state": "passed",
"time": 16107350316923
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "3077723f-b119-4c15-89d6-3ccd477683c2",
"transitionId": "229adf6b-44a0-4a70-a6cc-84fedf4df99b",
"weight": 1,
"state": "opened",
"time": 16107350316927
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "34365936-ddce-4c2a-849c-f19d63fcc1d9",
"transitionId": "229adf6b-44a0-4a70-a6cc-84fedf4df99b",
"weight": 1,
"state": "interrupted",
"time": 16107350316930,
"reason": ""
}
]
},
"a7d6835a-4932-4a13-aef0-2005320b83ae": {
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/Token.json",
"id": "a7d6835a-4932-4a13-aef0-2005320b83ae",
"transitions": [
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "599ec02a-53aa-49c1-990e-06d6fc279481",
"transitionId": "4ac04735-4649-4a68-a53c-0a51e2a451fb",
"weight": 1,
"state": "opened",
"time": 16107350316934
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "af796fd1-b411-42c2-8565-ae8435c3beb2",
"transitionId": "4ac04735-4649-4a68-a53c-0a51e2a451fb",
"weight": 1,
"state": "passed",
"time": 16107350316938
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "b258d46c-616d-4abe-be95-283ed8abe76c",
"transitionId": "26bf69d6-b027-4aa8-9da7-ddab61276671",
"weight": 1,
"state": "opened",
"time": 16107350316941
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "2747bc3e-95f9-4440-b9e6-62081edb1a41",
"transitionId": "26bf69d6-b027-4aa8-9da7-ddab61276671",
"weight": 1,
"state": "passed",
"time": 16107350316944
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "a97c3389-0ec5-4282-8eab-292fd3d6b2ba",
"transitionId": "8e4dbb6f-3556-4010-9778-7d15cd075eeb",
"weight": 1,
"state": "opened",
"time": 16107350316947
},
{
"schema": "http:\/\/pvm.forma-pro.com\/schemas\/TokenTransition.json",
"id": "f57ad853-686e-4391-bc57-9e852796139b",
"transitionId": "8e4dbb6f-3556-4010-9778-7d15cd075eeb",
"weight": 1,
"state": "passed",
"time": 16107350316950
}
]
}
}
}