Monolith - Tek

ost of the PHP that still exists today was written long ago by developers lost to the sands of time. It was written in an era where we didn't have the tools we do today such as Composer, type safety, unit testing, and code standards. Even code that was written recently frequently ignores best practices in order to "get things done". You've been tasked with maintaining a legacy application and would like to modernize it, but the powers that be won't let you rewrite it. This talk will discuss strategies for bringing ancient codebases into the modern age piece-by-piece, covering the pros and cons of microservices, monoliths, and event buses.

Transcript

1. Break Off A Piece Of That Monolith
2. Break Off A Piece Of That Mono Omni Adams — PHP[Tek] 2024 lith
3. https://commons.wikimedia.org/wiki/File:Spaghetti,_cooked,_in_bowl.jpg
4. https://www. fl ickr.com/photos/wagner-machado-carlos-lemes/2987599021
5. https://www. fl ickr.com/photos/tambako/3589021887 https://www.hyrumslaw.com/
6. https://www. fl ickr.com/photos/nachof/2482912078
7. https://www.pxfuel.com/en/free-photo-ozrrp
9. https://www.geograph.org.uk/photo/5846712
10. –DHH “You don’t want to hear that the reason your monolith is a spaghetti monster is because you let it become that way, one commit at the time, due to weak habits, pressurized deadlines, or simply sheer lack of competence.” https://m.signalvnoise.com/integrated-systems-for-integrated-programmers/
11. It’s REALLY hard
12. Plan of Attack Testing Tools Refactoring
13. https://commons.wikimedia.org/wiki/File:PHPUnit_Logo.svg
14. PHPUnit 8.5.0 by Sebastian Bergmann and contributors. ............................................................... 63 / 281 ( 22%) ............................................................... 126 / 281 ( 44%) ............................................................... 189 / 281 ( 67%) ............................................................... 252 / 281 ( 89%) ............................. 281 / 281 (100%) Time: 2.83 seconds, Memory: 24.00 MB OK (281 tests, 6 assertions) Code Coverage Report: Summary: Classes: 51.72% (15/29) Methods: 75.83% (91/120) Lines: 55.95% (941/1682)
17. Testing Unit tests Functional tests
18. Static Analysis php-cs- fi xer PHPStan
19. Style Guides
20. 1) src/Nether/Object/Prototype.php (visibility_required, class_attributes_separation, indentation_type, class_de fi nition, single_space_around_construct, method_argument_space, fully_quali fi ed_strict_types, no_spaces_after_function_name, declare_strict_types, blank_line_after_opening_tag, control_structure_braces, constant_case, control_structure_continuation_position, magic_method_casing, ordered_traits, yoda_style, braces_position, statement_indentation, no_useless_return, no_extra_blank_lines, ordered_imports, binary_operator_spaces) ---------- begin diff ---------- --- /home/omni/code/object/src/Nether/Object/Prototype.php +++ /home/omni/code/object/src/Nether/Object/Prototype.php @@ -1,194 +1,202 @@ <?php +declare(strict_types=1); + namespace Nether\Object; -use Nether\Object\Prototype\Flags; -use Nether\Object\Prototype\ConstructArgs; use Nether\Object\Package\ClassInfoPackage; +use Nether\Object\Package\MethodInfoPackage; use Nether\Object\Package\PropertyInfoPackage; -use Nether\Object\Package\MethodInfoPackage; +use Nether\Object\Prototype\ConstructArgs; +use Nether\Object\Prototype\Flags; -class Prototype { +class Prototype +{ - use - ClassInfoPackage, - PropertyInfoPackage, - MethodInfoPackage; + use ClassInfoPackage; + use MethodInfoPackage; + use PropertyInfoPackage; - public function - __Construct(array|object|NULL $Raw=NULL, array|object|NULL $Defaults=NULL, int $Flags=0) { + public function __construct(array|object|null $Raw = null, array|object|null $Defaults = null, int $Flags = 0) + {
21. Reading code is at least twice as hard as writing code.
22. Static Analysis php-cs- fi xer PHPStan
23. ------ ---------------------------------------------------------------------- Line requisition.edit.php ------ ---------------------------------------------------------------------- 21 Class Error referenced with incorrect case: error. 24 Instantiated class requisition not found. 25 Call to method load_from_database() on an unknown class requisition. 27 Class Error referenced with incorrect case: error. 28 Constant ERR_RECORD_NOT_FOUND not found. 29 Call to an unde fi ned method Error::new_error(). 36 Constant APP_ROOT not found. 199 Constant REQ_TERM_FULL_TIME not found.
24. Refactoring Breaking up big pieces of code Pulling procedural code out to objects Pulling large pieces of functionality out
25. Refactoring: Bigger is better?
26. Refactoring: Small for the win?
27. Refactoring: Just right
28. The Strangler Pattern
29. Example: Calendar PHP3ish code Interspersed PHP and HTML No style guide No composer No tests
45. /calendar.add.php —> {old crusty code} /calendar —> {new framework}
46. https://pixabay.com/vectors/zombie-undead-monster-frankenstein-156055/ https://slides.com/andysnell/zombie-hunt
49. Microservices
50. Microservices (+ the monolith)
51. Microservice S
52. "Micro"services
53. /users /customers /sales /weather
54. THANKS TO OUR SPONSORS
55. https://speakerdeck.com/omnicolor/monolith-tek https://phpc.social/@omnicolor Omni Adams omni@digitaldarkness.com https://joind.in/talk/3aeec