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  • About
  • Installation
  • How to use
    • CQRS PHP
    • Event Handling PHP
    • Aggregates & Sagas
    • Scheduling in PHP
    • Asynchronous PHP
    • Event Sourcing PHP
    • Microservices PHP
    • Resiliency and Error Handling
    • Laravel Demos
    • Symfony Demos
      • Doctrine ORM
  • Tutorial
    • Before we start tutorial
    • Lesson 1: Messaging Concepts
    • Lesson 2: Tactical DDD
    • Lesson 3: Converters
    • Lesson 4: Metadata and Method Invocation
    • Lesson 5: Interceptors
    • Lesson 6: Asynchronous Handling
  • Enterprise
  • Modelling
    • Introduction
    • Message Bus and CQRS
      • CQRS Introduction - Commands
        • Query Handling
        • Event Handling
      • Aggregate Introduction
        • Aggregate Command Handlers
        • Aggregate Query Handlers
        • Aggregate Event Handlers
        • Advanced Aggregate creation
      • Repositories Introduction
      • Business Interface
        • Introduction
        • Business Repository
        • Database Business Interface
          • Converting Parameters
          • Converting Results
      • Saga Introduction
      • Identifier Mapping
    • Extending Messaging (Middlewares)
      • Message Headers
      • Interceptors (Middlewares)
        • Additional Scenarios
      • Intercepting Asynchronous Endpoints
      • Extending Message Buses (Gateways)
    • Event Sourcing
      • Installation
      • Event Sourcing Introduction
        • Working with Event Streams
        • Event Sourcing Aggregates
          • Working with Aggregates
          • Applying Events
          • Different ways to Record Events
        • Working with Metadata
        • Event versioning
        • Event Stream Persistence
          • Event Sourcing Repository
          • Making Stream immune to changes
          • Snapshoting
          • Persistence Strategies
          • Event Serialization and PII Data (GDPR)
      • Projection Introduction
        • Configuration
        • Choosing Event Streams for Projection
        • Executing and Managing
          • Running Projections
          • Projection CLI Actions
          • Access Event Store
        • Projections with State
        • Emitting events
    • Recovering, Tracing and Monitoring
      • Resiliency
        • Retries
        • Error Channel and Dead Letter
          • Dbal Dead Letter
        • Idempotent Consumer (Deduplication)
        • Resilient Sending
        • Outbox Pattern
        • Concurrency Handling
      • Message Handling Isolation
      • Ecotone Pulse (Service Dashboard)
    • Asynchronous Handling and Scheduling
      • Asynchronous Message Handlers
      • Asynchronous Message Bus (Gateways)
      • Delaying Messages
      • Time to Live
      • Message Priority
      • Scheduling
      • Dynamic Message Channels
    • Distributed Bus and Microservices
      • Distributed Bus
        • Distributed Bus with Service Map
          • Configuration
          • Custom Features
          • Non-Ecotone Application integration
          • Testing
        • AMQP Distributed Bus (RabbitMQ)
          • Configuration
        • Distributed Bus Interface
      • Message Consumer
      • Message Publisher
    • Business Workflows
      • The Basics - Stateless Workflows
      • Stateful Workflows - Saga
      • Handling Failures
    • Testing Support
      • Testing Messaging
      • Testing Aggregates and Sagas with Message Flows
      • Testing Event Sourcing Applications
      • Testing Asynchronous Messaging
  • Messaging and Ecotone In Depth
    • Overview
    • Multi-Tenancy Support
      • Getting Started
        • Any Framework Configuration
        • Symfony and Doctrine ORM
        • Laravel
      • Different Scenarios
        • Hooking into Tenant Switch
        • Shared and Multi Database Tenants
        • Accessing Current Tenant in Message Handler
        • Events and Tenant Propagation
        • Multi-Tenant aware Dead Letter
      • Advanced Queuing Strategies
    • Document Store
    • Console Commands
    • Messaging concepts
      • Message
      • Message Channel
      • Message Endpoints/Handlers
        • Internal Message Handler
        • Message Router
        • Splitter
      • Consumer
      • Messaging Gateway
      • Inbound/Outbound Channel Adapter
    • Method Invocation And Conversion
      • Method Invocation
      • Conversion
        • Payload Conversion
        • Headers Conversion
    • Service (Application) Configuration
    • Contributing to Ecotone
      • How Ecotone works under the hood
      • Ecotone Phases
      • Registering new Module Package
      • Demo Integration with SQS
        • Preparation
        • Inbound and Outbound Adapters and Message Channel
        • Message Consumer and Publisher
  • Modules
    • Overview
    • Symfony
      • Symfony Configuration
      • Symfony Database Connection (DBAL Module)
      • Doctrine ORM
      • Symfony Messenger Transport
    • Laravel
      • Laravel Configuration
      • Database Connection (DBAL Module)
      • Eloquent
      • Laravel Queues
      • Laravel Octane
    • Ecotone Lite
      • Logging
      • Database Connection (DBAL Module)
    • JMS Converter
    • OpenTelemetry (Tracing and Metrics)
      • Configuration
    • RabbitMQ Support
    • Kafka Support
      • Configuration
      • Message partitioning
      • Usage
    • DBAL Support
    • Amazon SQS Support
    • Redis Support
  • Other
    • Contact, Workshops and Support
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On this page
  • Projection Actions
  • Projection initialization
  • Resetting/Rebuilding the projection
  • Deleting the projection
  • Manually triggering projection

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  1. Modelling
  2. Event Sourcing
  3. Projection Introduction
  4. Executing and Managing

Projection CLI Actions

PHP rebuild and delete projections

Projection Actions

Projection initialization

As projection can be restarted, deleted and created differently. When the projection knows how to setup it itself, it's easy to rebuild it when change is needed.

bin/console ecotone:es:initialize-projection {projectionName}
artisan ecotone:es:initialize-projectionn {projectionName}
$messagingSystem->runConsoleCommand("ecotone:es:initialize-projection", ["name" => $projectionName]);

And inside the projection we need to implement ProjectionInitialization to tell Ecotone what to do:

#[ProjectionInitialization]
public function initialization() : void
{
$this->connection->executeStatement(<<<SQL
    CREATE TABLE IF NOT EXISTS in_progress_tickets (
        ticket_id VARCHAR(36) PRIMARY KEY,
        ticket_type VARCHAR(25)
    )
SQL);
}

With Polling projections, your projection will be initialized automatically. With Event Driven projections, your projections will not be created on startup, consider running command first.

Resetting/Rebuilding the projection

In order to restart the projection in case we want to provide incompatible change, we can simply reset the projection and it will build up from the beginning.

bin/console ecotone:es:reset-projection {projectionName}
artisan ecotone:es:reset-projection {projectionName}
$messagingSystem->runConsoleCommand("ecotone:es:reset-projection", ["name" => $projectionName]);

And inside the projection we need to implement ProjectionReset to tell Ecotone what to do:

#[ProjectionReset]
public function reset() : void
{
$this->connection->executeStatement(<<<SQL
    DELETE FROM in_progress_tickets
SQL);
}

Deleting the projection

If we want to delete the projection

bin/console ecotone:es:delete-projection {projectionName}
artisan ecotone:es:delete-projection {projectionName}
$messagingSystem->runConsoleCommand("ecotone:es:delete-projection", ["name" => $projectionName]);

And inside the projection we need to implement ProjectionDelete to tell Ecotone what to do:

#[ProjectionDelete]
public function delete() : void
{
$this->connection->executeStatement(<<<SQL
    DROP TABLE in_progress_tickets
SQL);
}

Manually triggering projection

If we want to manually trigger projection

bin/console ecotone:es:trigger-projection {projectionName}
artisan ecotone:es:trigger-projection {projectionName}
$messagingSystem->runConsoleCommand("ecotone:es:trigger-projection", ["name" => $projectionName]);

This can come in handy is specific situations. E.g. in case of asynchronous event-driven projection failed in the middle of resetting. Instead of resetting it again or waiting for event which will trigger your projection, you can do it manually.

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Last updated 1 year ago

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