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Package cqrs-bundle
Short Description A symfony bundle for CQRS library and its extensions for Queries and Commands
License MIT
Informations about the package cqrs-bundle
LMC CQRS Bundle
Symfony bundle for CQRS libraries and extensions. It registers services, data collectors etc. by a configuration.
Table of contents
- Installation
- Configuration
- Routes
- Tags
- Services
- Handlers
- Extensions
- HTTP
- Solr
- List of all predefined services
Installation
Configuration
Profiler extended configuration
TIPs:
- it is advised to set
profiler: '%kernel.debug%'
so it profiles (and registers all services for profiling) only when it is really used - you can define
profiler
anddebug
in yourdev/lmc_cqrs.yaml
to only allow it indev
Symfony environment
Note: if you don't enable any of the extension, there will only be a CallbackQueryHandler
and CallbackSendCommandHandler
, so you probably need to register your own.
Routes
You must register the routes for a CQRS bundle if you enable a profiler.
Tags:
Tags are automatically registered, if your class implements an Interface and is registered in Symfony container as a service
lmc_cqrs.query_handler
(QueryHandlerInterface
)lmc_cqrs.send_command_handler
(SendCommandHandlerInterface
)lmc_cqrs.profiler_formatter
(ProfilerFormatterInterface
)lmc_cqrs.response_decoder
(ResponseDecoderInterface
)
With priority
Note: Default priority is 50
and none of the predefined handlers, profilers, etc. has priority higher than 90
(see complete list below)
Services
Bundle registers all necessary services according to configuration (for example, if you set http: true
it will automatically register all http handlers, etc.)
Most of the services are registered both by an alias and a class name, so it will be available for autowiring. All interfaces are automatically configured to have a tag (see Tags section above).
Handlers
There are 2 main services, which are essential to the library. Both of them have its interface to represent it, and it is advised to use it via the interface.
1. Query Fetcher Interface
- implementation
Lmc\Cqrs\Handler\QueryFetcher
- alias:
@lmc_cqrs.query_fetcher
- it will find a handler for your query, handles it, decodes a response and caches the result (if cache is enabled)
- provides features:
- caching
- requires:
- cache_provider (set in the configuration) - service implements
Psr\Cache\CacheItemPoolInterface
- Query to implement
Lmc\Cqrs\Types\Feature\CacheableInterface
- cache_provider (set in the configuration) - service implements
- it allows to cache a decoded result and load it again from cache
- requires:
- profiling
- requires:
- enabled profiler (in the configuration)
- Query to implement
Lmc\Cqrs\Types\Feature\ProfileableInterface
- it profiles a query, its execution time, response, applied handler and decoders and shows the info in the Symfony profiler
- requires:
- caching
Fetching a query
You can do whatever you want with a response, we will persist a result into db, for an example or log an error.
2. Command Sender Interface
- implementation
Lmc\Cqrs\Handler\CommandSender
- alias:
@lmc_cqrs.command_sender
- it will find a handler for your command, handles it, decodes a response
- provides features:
- profiling
- requires:
- enabled profiler (in the configuration)
- Command to implement
Lmc\Cqrs\Types\Feature\ProfileableInterface
- it profiles a command, its execution time, response, applied handler and decoders and shows the info in the Symfony profiler
- requires:
- profiling
Sending a command
You can do whatever you want with a response, we will persist a result into db, for an example or log an error.
Note: There is no logging feature in the CQRS library, if you need one, you have to implement it by yourself.
Profiler Bag
There is a profiler bag
service, which is a collection of all profiler information in the current request.
The information inside are used by a CqrsDataCollector
, which shows them in the Symfony profiler.
It requires profiler: true
in the configuration.
You can access the profiler bag either by:
@lmc_cqrs.profiler_bag
(alias)Lmc\Cqrs\Handler\ProfilerBag
(autowiring)- or access a
CqrsDataCollector
programmatically (see here)
Extensions
We offer a basic extensions for a common Commands & Queries
- PSR-7)
- Solarium)
Http
Installation
NOTE: You will also need an implementation for PSR-7, PSR-17 and PSR-18 for HTTP extensions to work.
Configuration
Enabling a Http extension will allow a QueryFetcher
and CommandSender
to handle a PSR-7 Requests/Response and decode it.
Solr
Installation
Configuration
Enabling a Solr extension will allow a QueryFetcher
and CommandSender
to handle a Solarium Requests/Result and decode it.
Solarium Query Builder
It allows you to build a Solarium request only by defining an Entity with all features you want to provide. See Solr extension readme for more information.
Note: You can specify a tag for your custom applicator by lmc_cqrs.solr.query_builder_applicator
List of all predefined services and their priorities
Note: To see a list of all services really registered in your application use bin/console debug:cqrs
(it requires debug: true
in your configuration)
Top most handlers for Commands & Queries
Interface | Class | Alias |
---|---|---|
Lmc\Cqrs\Types\QueryFetcherInterface | Lmc\Cqrs\Handler\QueryFetcher | @lmc_cqrs.query_fetcher |
Lmc\Cqrs\Types\CommandSenderInterface | Lmc\Cqrs\Handler\CommandSender | @lmc_cqrs.command_sender |
Query Handlers
Service | Alias | Tag | Priority | Enabled |
---|---|---|---|---|
Lmc\Cqrs\Handler\Handler\GetCachedHandler | - | - | 80 | if cache is enabled |
Lmc\Cqrs\Handler\Handler\CallbackQueryHandler | @lmc_cqrs.query_handler.callback |
lmc_cqrs.query_handler |
50 | always |
Lmc\Cqrs\Http\Handler\HttpQueryHandler | @lmc_cqrs.query_handler.http |
lmc_cqrs.query_handler |
50 | if http extension is enabled |
Send Command Handlers
Service | Alias | Tag | Priority | Enabled |
---|---|---|---|---|
Lmc\Cqrs\Handler\Handler\CallbackSendCommandHandler | @lmc_cqrs.send_command_handler.callback |
lmc_cqrs.send_command_handler |
50 | always |
Lmc\Cqrs\Http\Handler\HttpSendCommandHandler | @lmc_cqrs.send_command_handler.http |
lmc_cqrs.send_command_handler |
50 | if http extension is enabled |
Response decoders
Service | Alias | Tag | Priority | Enabled |
---|---|---|---|---|
Lmc\Cqrs\Http\Decoder\HttpMessageResponseDecoder | @lmc_cqrs.response_decoder.http |
lmc_cqrs.response_decoder |
90 | if http extension is enabled |
Lmc\Cqrs\Http\Decoder\StreamResponseDecoder | @lmc_cqrs.response_decoder.stream |
lmc_cqrs.response_decoder |
70 | if http extension is enabled |
Lmc\Cqrs\Types\Decoder\JsonResponseDecoder | @lmc_cqrs.response_decoder.json |
lmc_cqrs.response_decoder |
60 | always |
Profiler formatters
Service | Alias | Tag | Priority | Enabled |
---|---|---|---|---|
Lmc\Cqrs\Http\Formatter\HttpProfilerFormatter | @lmc_cqrs.profiler_formatter.http |
lmc_cqrs.profiler_formatter |
-1 | if http extension is enabled |
Lmc\Cqrs\Types\Formatter\JsonProfilerFormatter | - | lmc_cqrs.profiler_formatter |
-1 | if profiler is enabled |
Lmc\Cqrs\Bundle\Service\ErrorProfilerFormatter | - | lmc_cqrs.profiler_formatter |
-1 | if profiler is enabled |
Other services
Class | Alias | Purpose | Enabled |
---|---|---|---|
Lmc\Cqrs\Bundle\Controller\CacheController | - | Controller for invalidating cache from a profiler | if profiler is enabled |
Lmc\Cqrs\Bundle\Profiler\CqrsDataCollector | - | Collects a data about Commands & Queries for a profiler | if profiler is enabled |
Lmc\Cqrs\Handler\ProfilerBag | @lmc_cqrs.profiler_bag |
A collection of all ProfilerItems, it is a main source of data for a CqrsDataCollector | if profiler is enabled |
All versions of cqrs-bundle with dependencies
ext-json Version *
ext-mbstring Version *
lmc/cqrs-handler Version ^2.2
lmc/cqrs-types Version ^3.2
symfony/config Version ^5.2 || ^6.0 || ^7.0
symfony/console Version ^5.2 || ^6.0 || ^7.0
symfony/dependency-injection Version ^5.2 || ^6.0 || ^7.0
symfony/error-handler Version ^5.2 || ^6.0 || ^7.0
symfony/framework-bundle Version ^5.2 || ^6.0 || ^7.0
symfony/http-foundation Version ^5.2 || ^6.0 || ^7.0
symfony/http-kernel Version ^5.2 || ^6.0 || ^7.0
twig/twig Version ^2.0 || ^3.0