Autowire all the things!

From Symfony 3.3 autowire was introducted to help handle services with ease. If we have a green field project is easy to use this feature but if we have an old application, migration process can be scary. In this talk I'll introduce autowire concepts and show how we have migrated and how to avoid common pitfall in this process.

Transcript

1. AUTOWIRE ALL THE THINGS!
   Verona, 19 Ottobre 2018
   SymfonyDayIT
   

   View Slide

2. Samuele Lilli
   “Don Callisto”
   

   View Slide

3. View Slide

4. View Slide

5. View Slide

6. AUTOWIRE AUTOWIRE
   AUTOWIRE AUTOWIRE
   AUTOWIRE AUTOWIRE
   RE
   AUTOWIRE AUTOWIRE
   WIRE
   AUTOWIRE AUTOWIRE
   WIRE
   E
   AUTOWIRE AUTOWIRE
   TOWIRE
   AUTOWIRE AUTOWIRE
   UTOWIRE
   AUTOWIRE AUTOWIRE
   AUTOWIRE
   AUTOWIRE AUTOWIRE
   AUTOWIRE
   AUTOWIRE
   AUTOWIRE
   E
   AUTOWIRE
   AUTOWIRE
   IRE
   “Autowiring allows you to manage services
   in the container with minimal configuration.
   It reads the type-hints on your constructor
   (or other methods) and automatically passes
   the correct services to each method.
   Symfony's autowiring is designed to be
   predictable: if it is not absolutely clear which
   dependency should be passed, you'll see an
   actionable exception.”
   https://symfony.com/doc/current/service_container/autowiring.html
   

   View Slide

7. namespace App\Dashboard;
   class DashboardBlockBuilder {
   }
   class DashboardBuilder {
   private $blockBuilder;
   public function __construct(DashboardBlockBuilder $blockBuilder) {
   $this->blockBuilder = $blockBuilder;
   }
   }
   Autowire
   

   View Slide

8. namespace App\Dashboard;
   class DashboardBlockBuilder {
   }
   class DashboardBuilder {
   private $blockBuilder;
   public function __construct(DashboardBlockBuilder $blockBuilder) {
   $this->blockBuilder = $blockBuilder;
   }
   }
   Autowire
   

   View Slide

9. namespace App\Dashboard;
   class DashboardBlockBuilder {
   }
   class DashboardBuilder {
   private $blockBuilder;
   public function __construct(DashboardBlockBuilder $blockBuilder) {
   $this->blockBuilder = $blockBuilder;
   }
   }
   Autowire
   

   View Slide

10. services:
    app.dashboard.block_builder:
    class: App\Dashboard\DashboardBlockBuilder
    app.dashboard.builder:
    class: App\Dashboard\DashboardBuilder
    arguments: ['@app.dashboard.block_builder']
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\Dashboard\DashboardBlockBuilder: ~
    App\Dashboard\DashboardBuilder: ~
    WITHOUT AUTOWIRE WITH AUTOWIRE
    Autowire
    

    View Slide

11. services:
    app.dashboard.block_builder:
    class: App\Dashboard\DashboardBlockBuilder
    app.dashboard.builder:
    class: App\Dashboard\DashboardBuilder
    arguments: ['@app.dashboard.block_builder']
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\Dashboard\DashboardBlockBuilder: ~
    App\Dashboard\DashboardBuilder: ~
    WITHOUT AUTOWIRE WITH AUTOWIRE
    Autowire
    

    View Slide

12. services:
    app.dashboard.block_builder:
    class: App\Dashboard\DashboardBlockBuilder
    app.dashboard.builder:
    class: App\Dashboard\DashboardBuilder
    arguments: ['@app.dashboard.block_builder']
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\Dashboard\DashboardBlockBuilder: ~
    App\Dashboard\DashboardBuilder: ~
    WITHOUT AUTOWIRE WITH AUTOWIRE
    Autowire
    

    View Slide

13. services:
    app.dashboard.block_builder:
    class: App\Dashboard\DashboardBlockBuilder
    app.dashboard.builder:
    class: App\Dashboard\DashboardBuilder
    arguments: ['@app.dashboard.block_builder']
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\Dashboard\DashboardBlockBuilder: ~
    App\Dashboard\DashboardBuilder: ~
    WITHOUT AUTOWIRE WITH AUTOWIRE
    Autowire
    

    View Slide

14. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Autowire
    

    View Slide

15. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Autowire
    

    View Slide

16. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Enable depencency
    “auto”injection
    Autowire
    

    View Slide

17. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Enable depencency
    “auto”injection
    Enable service
    “auto”tagging
    Autowire
    

    View Slide

18. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Enable depencency
    “auto”injection
    Enable service
    “auto”tagging
    Disable service fetching
    from container
    Autowire
    

    View Slide

19. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Enable depencency
    “auto”injection
    Enable service
    “auto”tagging
    Disable service fetching
    from container
    Autowire
    

    View Slide

20. services:
    app.dashboard.block_builder:
    class: App\Dashboard\DashboardBlockBuilder
    app.dashboard.builder:
    class: App\Dashboard\DashboardBuilder
    arguments: ['@app.dashboard.block_builder']
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\Dashboard\DashboardBlockBuilder: ~
    App\Dashboard\DashboardBuilder: ~
    WITHOUT AUTOWIRE WITH AUTOWIRE
    Autowire
    

    View Slide

21. services:
    app.dashboard.block_builder:
    class: App\Dashboard\DashboardBlockBuilder
    app.dashboard.builder:
    class: App\Dashboard\DashboardBuilder
    arguments: ['@app.dashboard.block_builder']
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\Dashboard\DashboardBlockBuilder: ~
    App\Dashboard\DashboardBuilder: ~
    WITHOUT AUTOWIRE WITH AUTOWIRE
    Autowire
    

    View Slide

22. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\:
    resource: '../src/*'
    exclude: '../src/{Entity,Migrations,Tests}'
    Autowire
    

    View Slide

23. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\:
    resource: '../src/*'
    exclude: '../src/{Entity,Migrations,Tests}'
    Service Discovery
    Autowire
    

    View Slide

24. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\:
    resource: '../src/*'
    exclude: '../src/{Entity,Migrations,Tests}'
    Service Discovery
    Autowire
    

    View Slide

25. services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    App\:
    resource: '../src/*'
    exclude: '../src/{Entity,Migrations,Tests}'
    Service Discovery
    Autowire
    

    View Slide

26. SERVICE
    DISCOVERYAIN’T
    AUTOWIRE
    

    View Slide

27. App\Controller\:
    resource: '../src/Controller'
    tags: ['controller.service_arguments']
    Service Discovery
    class DashboardController {
    public function __construct(DashboardBuilder $builder) {
    }
    public function build(DashboardBuilder $builder) {
    }
    }
    

    View Slide

28. App\Controller\:
    resource: '../src/Controller'
    tags: ['controller.service_arguments']
    Service Discovery
    class DashboardController {
    public function __construct(DashboardBuilder $builder) {
    }
    public function build(DashboardBuilder $builder) {
    }
    }
    

    View Slide

29. App\Controller\:
    resource: '../src/Controller'
    tags: ['controller.service_arguments']
    Service Discovery
    class DashboardController {
    public function __construct(DashboardBuilder $builder) {
    }
    public function build(DashboardBuilder $builder) {
    }
    }
    

    View Slide

30. App\Controller\:
    resource: '../src/Controller'
    tags: ['controller.service_arguments']
    Service Discovery
    class DashboardController {
    public function __construct(DashboardBuilder $builder) {
    }
    public function build(DashboardBuilder $builder) {
    }
    }
    

    View Slide

31. AUTOWIRE INTERFACES
    SCALAR ARGS
    ABSTRACT CLASSES
    

    View Slide

32. Interface - Abstract
    Multiple concrete implementation
    ?
    Provide default implementation (alias)
    App\Dashboard\DashboardBlockBuilderInterface:
    '@App\Dashboard\DashboardBlockBuilder'
    !
    

    View Slide

33. Interface - Abstract
    Single concrete implementation
    ?
    Nothing to do: SF provide alias for you
    !
    

    View Slide

34. Different implementation than default
    ?
    Declare explicitly service
    !
    Interface - Abstract
    

    View Slide

35. Scalar Args
    services:
    _defaults:
    bind:
    $dashboardName: 'aName'
    class DashboardBuilder {
    public function __construct(DashboardBlockBuilderInterface $blockBuilder, string $dashboardName) {
    }
    }
    App\Dashboard\DashboardBuilder:
    $dashboardName: 'aName'
    App\Dashboard\DashboardBuilder:
    arguments:
    ['@App\Dashboard\DashboardBlockBuilder', 'aName']
    1 2
    3
    

    View Slide

36. Scalar Args
    services:
    _defaults:
    bind:
    $dashboardName: 'aName'
    class DashboardBuilder {
    public function __construct(DashboardBlockBuilderInterface $blockBuilder, string $dashboardName) {
    }
    }
    App\Dashboard\DashboardBuilder:
    $dashboardName: 'aName'
    App\Dashboard\DashboardBuilder:
    arguments:
    ['@App\Dashboard\DashboardBlockBuilder', 'aName']
    1 2
    3
    

    View Slide

37. Scalar Args
    services:
    _defaults:
    bind:
    $dashboardName: 'aName'
    class DashboardBuilder {
    public function __construct(DashboardBlockBuilderInterface $blockBuilder, string $dashboardName) {
    }
    }
    App\Dashboard\DashboardBuilder:
    $dashboardName: 'aName'
    App\Dashboard\DashboardBuilder:
    arguments:
    ['@App\Dashboard\DashboardBlockBuilder', 'aName']
    1 2
    3
    

    View Slide

38. Scalar Args
    services:
    _defaults:
    bind:
    $dashboardName: 'aName'
    class DashboardBuilder {
    public function __construct(DashboardBlockBuilderInterface $blockBuilder, string $dashboardName) {
    }
    }
    App\Dashboard\DashboardBuilder:
    $dashboardName: 'aName'
    App\Dashboard\DashboardBuilder:
    arguments:
    ['@App\Dashboard\DashboardBlockBuilder', 'aName']
    1 2
    3
    

    View Slide

39. Scalar Args
    services:
    _defaults:
    bind:
    $dashboardName: 'aName'
    class DashboardBuilder {
    public function __construct(DashboardBlockBuilderInterface $blockBuilder, string $dashboardName) {
    }
    }
    App\Dashboard\DashboardBuilder:
    $dashboardName: 'aName'
    App\Dashboard\DashboardBuilder:
    arguments:
    ['@App\Dashboard\DashboardBlockBuilder', 'aName']
    1 2
    3
    

    View Slide

40. SERVICE
    MIGRATION
    

    View Slide

41. Migration
    Multiple bundles
    

    View Slide

42. Multiple bundles
    Multiple config. files
    Migration
    

    View Slide

43. STEP 1ENABLE
    AUTOWIRE
    

    View Slide

44. Migration - Step 1
    For each single configuration
    file, enable autowire and
    autoconfigure but don’t
    disable service fetching
    (public: true)
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    #public: false
    

    View Slide

45. Migration - Step 1
    For each single configuration
    file, enable autowire and
    autoconfigure but don’t
    disable service fetching
    (public: true)
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    #public: false
    

    View Slide

46. STEP 2 FQCN SERVICES
    &
    ALIAS
    

    View Slide

47. # legacy_aliases.yaml
    services:
    _defaults:
    public: true # Since SF 3.4 even alias have “private” visibility by default
    nuvola.protocollo.mail_processing.mail_reader: '@Nuvola\ProtocolloBundle\MailProcessing\MailReader'
    nuvola.email_fetcher.nuvola_email_fetcher: '@Nuvola\EmailBundle\NuvolaEmailFetcher'
    # service.yaml
    imports:
    - { resource: legacy_aliases.yml }
    [...]
    Migration - Step 2
    

    View Slide

48. # legacy_aliases.yaml
    services:
    _defaults:
    public: true # Since SF 3.4 even alias have “private” visibility by default
    nuvola.protocollo.mail_processing.mail_reader: '@Nuvola\ProtocolloBundle\MailProcessing\MailReader'
    nuvola.email_fetcher.nuvola_email_fetcher: '@Nuvola\EmailBundle\NuvolaEmailFetcher'
    # service.yaml
    imports:
    - { resource: legacy_aliases.yml }
    [...]
    Migration - Step 2
    

    View Slide

49. # legacy_aliases.yaml
    services:
    _defaults:
    public: true # Since SF 3.4 even alias have “private” visibility by default
    nuvola.protocollo.mail_processing.mail_reader: '@Nuvola\ProtocolloBundle\MailProcessing\MailReader'
    nuvola.email_fetcher.nuvola_email_fetcher: '@Nuvola\EmailBundle\NuvolaEmailFetcher'
    # service.yaml
    imports:
    - { resource: legacy_aliases.yml }
    [...]
    Migration - Step 2
    

    View Slide

50. # legacy_aliases.yaml
    services:
    _defaults:
    public: true # Since SF 3.4 even alias have “private” visibility by default
    nuvola.protocollo.mail_processing.mail_reader: '@Nuvola\ProtocolloBundle\MailProcessing\MailReader'
    nuvola.email_fetcher.nuvola_email_fetcher: '@Nuvola\EmailBundle\NuvolaEmailFetcher'
    # service.yaml
    imports:
    - { resource: legacy_aliases.yml }
    [...]
    Migration - Step 2
    

    View Slide

51. services:
    nuvola.protocollo.mail_processing.mail_reader:
    class: Nuvola\ProtocolloBundle\MailProcessing\MailReader
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    nuvola.email_fetcher.nuvola_email_fetcher:
    class: Nuvola\EmailBundle\NuvolaEmailFetcher
    services:
    Nuvola\ProtocolloBundle\MailProcessing\MailReader:
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    Nuvola\EmailBundle\NuvolaEmailFetcher: ~
    Migration - Step 2
    

    View Slide

52. services:
    nuvola.protocollo.mail_processing.mail_reader:
    class: Nuvola\ProtocolloBundle\MailProcessing\MailReader
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    nuvola.email_fetcher.nuvola_email_fetcher:
    class: Nuvola\EmailBundle\NuvolaEmailFetcher
    services:
    Nuvola\ProtocolloBundle\MailProcessing\MailReader:
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    Nuvola\EmailBundle\NuvolaEmailFetcher: ~
    Migration - Step 2
    

    View Slide

53. services:
    nuvola.protocollo.mail_processing.mail_reader:
    class: Nuvola\ProtocolloBundle\MailProcessing\MailReader
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    nuvola.email_fetcher.nuvola_email_fetcher:
    class: Nuvola\EmailBundle\NuvolaEmailFetcher
    services:
    Nuvola\ProtocolloBundle\MailProcessing\MailReader:
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    Nuvola\EmailBundle\NuvolaEmailFetcher: ~
    Migration - Step 2
    

    View Slide

54. services:
    nuvola.protocollo.mail_processing.mail_reader:
    class: Nuvola\ProtocolloBundle\MailProcessing\MailReader
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    nuvola.email_fetcher.nuvola_email_fetcher:
    class: Nuvola\EmailBundle\NuvolaEmailFetcher
    services:
    Nuvola\ProtocolloBundle\MailProcessing\MailReader:
    arguments: ['@nuvola.email_fetcher.nuvola_email_fetcher']
    Nuvola\EmailBundle\NuvolaEmailFetcher: ~
    Migration - Step 2
    

    View Slide

55. STEP 3PRIVATE
    SERVICES
    

    View Slide

56. Migration - Step 3
    For each single
    configuration file, disable
    service fetching
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    

    View Slide

57. For each single
    configuration file, disable
    service fetching
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Migration - Step 3
    

    View Slide

58. STEP 4ENABLE
    SERVICE
    DISCOVERY
    

    View Slide

59. Migration - Step 4
    For each bundle create a file for
    service discovery
    # discovery.yaml
    services:
    _defaults:
    autowire: true
    autoconfigure: true
    public: false
    Nuvola\ProtocolloBundle\:
    resource: '../../*'
    exclude: '../../{Entity/*.php}'
    Nuvola\ProtocolloBundle\Controller\:
    resource: '../../Controller'
    tags: ['controller.service_arguments']
    

    View Slide

60. GET RID OF
    EVERY* SERVICE
    DEFINITION
    

    View Slide

61. HOWWITHOUT
    break
    LEGACY CODE?
    

    View Slide

62. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    

    View Slide

63. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    

    View Slide

64. bin/console debug:container
    

    View Slide

65. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    

    View Slide

66. View Slide

67. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    a) FIX ONE SERVICE AT A TIME AS CONTAINER MESSAGE
    ARE SUPER COMMUNICATIVE (interface/abstract
    injection, scalar args, misconfiguration)
    

    View Slide

68. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    a) FIX ONE SERVICE AT A TIME AS CONTAINER MESSAGE
    ARE SUPER COMMUNICATIVE (interface/abstract
    injection, scalar args, misconfiguration)
    b) RESTART FROM 2
    

    View Slide

69. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    a) FIX ONE SERVICE AT A TIME AS CONTAINER MESSAGE
    ARE SUPER COMMUNICATIVE (interface/abstract
    injection, scalar args, misconfiguration)
    b) RESTART FROM 2
    4) IF NO ERRORS
    

    View Slide

70. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    a) FIX ONE SERVICE AT A TIME AS CONTAINER MESSAGE
    ARE SUPER COMMUNICATIVE (interface/abstract
    injection, scalar args, misconfiguration)
    b) RESTART FROM 2
    4) IF NO ERRORS
    

    View Slide

71. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    a) FIX ONE SERVICE AT A TIME AS CONTAINER MESSAGE
    ARE SUPER COMMUNICATIVE (interface/abstract
    injection, scalar args, misconfiguration)
    b) RESTART FROM 2
    4) IF NO ERRORS
    

    View Slide

72. 1) COMMENT EVERY SERVICE IN FILE CONFIGURATION
    2) DEBUG CONTAINER FROM COMMAND LINE
    3) IF ERRORS
    a) FIX ONE SERVICE AT A TIME AS CONTAINER MESSAGE
    ARE SUPER COMMUNICATIVE (interface/abstract
    injection, scalar args, misconfiguration)
    b) RESTART FROM 2
    4) IF NO ERRORS
    

    View Slide

73. AVOID
    PITFALLSAKA WHATCONTAINER
    WON’T TELL YOU
    

    View Slide

74. SAME CLASS SERVICES
    app.dashboard.dashboard_horizontal_builder:
    class: App\Dashboard\DashboardBlockBuilder
    arguments: [...]
    app.dashboard.dashboard_vertical_builder:
    class: App\Dashboard\DashboardBlockBuilder
    arguments: [...]
    

    View Slide

75. SAME CLASS SERVICES
    app.dashboard.dashboard_horizontal_builder:
    class: App\Dashboard\DashboardBlockBuilder
    arguments: [...]
    app.dashboard.dashboard_vertical_builder:
    class: App\Dashboard\DashboardBlockBuilder
    arguments: [...]
    

    View Slide

76. ENTITY MANAGER
    As EntityManager isn’t registered as a service but
    his interface has an alias to the default one, when
    injection EntityManager, verify that’s the right
    one (multiple connections)
    

    View Slide

77. CUSTOM TAG
    If those tagged service implement a common
    interface, let symfony tag them for you
    $container
    ->registerForAutoconfiguration(MyInterface::class)
    ->addTag(‘aTag’);
    

    View Slide

78. CUSTOM TAG
    Otherwise
    declare and tag explicitly
    

    View Slide

79. SETTER INJECTION
    Setter injection can’t be done when compiling the
    container so you need to be explicit about it
    either declaring the service with the “old” fashion
    or ...
    

    View Slide

80. SETTER INJECTION
    /**
    * @required
    */
    public function setLogger(LoggerInterface $logger)
    {
    $this->logger = $logger;
    }
    

    View Slide

81. SERVICE PRIORITY
    Don’t comment out services
    where priority is declared
    

    View Slide

82. DOCTRINE LISTENER
    # In Compiler Pass
    $services = $container->findTaggedServiceIds('doctrine.entity_listener');
    foreach ($services as $service => $attributes) {
    $container->getDefinition($service)->setPublic(true);
    }
    

    View Slide

83. VALIDATOR ALIAS
    id="Nuvola\ProtocolloBundle\Validator\Constraints\Documento\DocumentoCreabileValidator"
    autowire="true"
    autoconfigure="false"
    public="false"
    parent="nuvola.protocollo.validator.documento.documento_base_validator">
    alias="nuvola.protocollo.validator.documento.documento_creabile_validator"/>
    
    

    View Slide

84. VALIDATOR ALIAS
    id="Nuvola\ProtocolloBundle\Validator\Constraints\Documento\DocumentoCreabileValidator"
    autowire="true"
    autoconfigure="false"
    public="false"
    parent="nuvola.protocollo.validator.documento.documento_base_validator">
    alias="nuvola.protocollo.validator.documento.documento_creabile_validator"/>
    
    

    View Slide

85. NON SHARED SERVICES
    Don’t comment out services
    where priority is declared
    

    View Slide

86. RECAP
    ● Autowire let you configure service with almost zero configuration
    ● It is predictable so no way to mess up the things (theoricatelly :D )
    ● Autowire ain’t service discovery (even if them are used in tandem)
    ● You can migrate your application a step at a time (if multi “isolated” dependency bundle even a bundle at
    a time)
    ● You can let autowire work with all previous configuration (so you’ll be able to skip “old service definition”
    cleanup
    ● Let the container help you in migration process
    ● Don’t trust the container and check the pointer in the previous slides (and tell me if you find more …)
    

    View Slide

87. questions?
    

    View Slide

88. https://joind.in/talk/1244f
    

    View Slide

89. WE’RE
    HIRING!
    

    View Slide