README

This bundle allow microservices communicate to each other using GraphQL query builder

Installation

Just a couple things are necessary for this bundle works.

Add garlic/bus bundle to your composer.json

composer require garlic/graphql-wrapper

GraphQL way to get result from service (several services)

Important: If you want to use GraphQL wrapper you have to install garlicservices/graphql-bundle on all the services you requiested in your queries. To install bundle on application just type in console the command showed below

composer require garlic/grpahql-bundle

Easy way to use GraphQl query

Simple example of querying data from remote microservice

$graphQLService = $this->get(GraphQLService::class);

$addressQuery = $graphQLService->createQuery('serviceName.QueryName');
$addressQuery
    ->select('id', 'city', 'zipcode')
    ->where('country = Ukraine');

$result = $graphQLService->fetch();

Querying internal related objects

Example of querying data from related objects

$graphQLService = $this->get(GraphQLService::class);

$apartmentQuery = $graphQLService->createQuery('serviceName.QueryName');
$apartmentQuery
    ->select('id', 'buildYear', 'address.id', 'address.city', 'address.country')
    ->where('size = 5');
    
$result = $graphQLService->fetch();    

Searching on internal related objects

Example of searching data on included objects

$graphQLService = $this->get(GraphQLService::class);

$apartmentQuery = $graphQLService->createQuery('serviceName.QueryName');
$apartmentQuery
    ->select('id', 'buildYear', 'address.id', 'address.city', 'address.country')
    ->where('size = 5', 'address.country = Ukraine');
    
$result = $graphQLService->fetch();

Querying external related objects (stitchOne)

Example of query stitching to one another by using stitchOne() method (stitched result will be included as an object)

$graphQLService = $this->get(GraphQLService::class);

$addressQuery = $graphQLService->createQuery('firstServiceName.QueryName');
$addressQuery
    ->select('id', 'city', 'country')
    ->where('country = Ukraine')
;

$apartmentQuery = $graphQLService->createQuery('secondServiceName.QueryName');
$apartmentQuery
    ->select('id', 'size', 'addressId')
    ->where('size = 5')
    ->stitchOne($addressQuery, 'address', 'addressId', 'id')
;

$result = $graphQLService->fetch();

Querying external related list of objects (stitchMany)

Example of stitching queries to one another by using stitchMany() method (stitched result will be included as list of objects)

$graphQLService = $this->get(GraphQLService::class);

$addressQuery = $graphQLService->createQuery('firstServiceName.QueryName');
$addressQuery
    ->select('id', 'city', 'country')
    ->where('country = Ukraine')
;

$apartmentQuery = $graphQLService->createQuery('secondServiceName.QueryName');
$apartmentQuery
    ->select('id', 'size', 'addressId')
    ->where('size = 5')
    ->stitchMany($addressQuery, 'address', 'addressId', 'id')
;

$result = $graphQLService->fetch();

Querying stitching by using internally included objects

Example of stitching queries with fields from internally included objects

$graphQLService = $this->get(GraphQLService::class);

$addressQuery = $graphQLService->createQuery('firstServiceName.QueryName');
$addressQuery
    ->select('id', 'city', 'country')
    ->where('country = Ukraine')
;

$apartmentQuery = $graphQLService->createQuery('secondServiceName.QueryName');
$apartmentQuery
    ->select('id', 'size', 'address.id', 'address.city', 'address.country')
    ->where('size = 5')
    ->stitchOne($addressQuery, 'fullAddress', 'address.id', 'id')
;

$result = $graphQLService->fetch();

Passing request headers

You could pass any headers you want just by using addHeader method on created query:

$graphQLService = $this->get(GraphQLService::class);

$apartmentQuery = $graphQLService->createQuery('secondServiceName.QueryName');
$apartmentQuery
    ->select(...)
    ->where(...)
    ->addHeader('Authorization', 'abc');

GraphQL mutations

Mutation is the way to change service data by sending some kinds of query. What this queries are and how they could created read below.

Create new data with GraphQL mutation

Example of creating new data row on remote microservice. Method "set" put new fields data in a query and method "select" contains fields that will be returned after query done.

$graphQLService = $this->get(GraphQLService::class);

$apartmentMutation = $graphQLService->createNewMutation('ServiceName.CreateMutationName');
$apartmentMutation
    ->set('size = 3', 'buildYear = 2018')
    ->select('id');
    
$result = $graphQLService->fetch();    

Update data with GraphQL mutation

$graphQLService = $this->get(GraphQLService::class);

$apartmentMutation = $graphQLService->createUpdateMutation('ServiceName.UpdateMutationName');
$apartmentMutation
    ->set('size = 3', 'buildYear = 2018')
    ->where('size = 5')
    ->select('id');
    
$result = $graphQLService->fetch();    

Delete data with GraphQL mutation

$graphQLService = $this->get(GraphQLService::class);

$apartmentMutation = $graphQLService->createDeleteMutation('ServiceName.DeleteMutationName');
$apartmentMutation
    ->where('size = 5')
    ->select('id');
    
$result = $graphQLService->fetch();    

Making async batch request with parallel processing

$graphQLService = $this->get(GraphQLService::class);

$addressMutation = $graphQLService->createNewMutation('template.AddressCreate');
$addressMutation
    ->select('id', 'country', 'city')
    ->set('country = Ukraine', 'city = Boyarka', 'street = Kyivska', 'zipcode = 20214', 'house = 1');

$apartmentQuery = $graphQLService->createQuery('template.AddressFind');
$apartmentQuery
    ->select('id')
    ->where(['id' => 123])
;

$result = $graphQLService->fetchAsync(); 

Query stitching in Mutation

Query stitching works the same way as in query mode. Just try, it's amazing!

Example of Create Mutation with next stitching to the query.

$graphQLService = $this->get(GraphQLService::class);

$addressMutation = $graphQLService->createNewMutation('FirstServiceName.CreateMutationName');
$addressMutation
    ->set('city = Kyiv', 'country = Ukraine')
    ->select('id');
    
$apartmentQuery = $graphQLService->createQuery('SecondServiceName.QueryName');
$apartmentQuery
    ->select('id', 'size', 'address.id', 'address.city', 'address.country')
    ->where('size = 5')
    ->stitchOne($addressMutation, 'newAddress', 'address.country', 'country')
;    
    
$result = $graphQLService->fetch();    

You can use stitching with query and mutation and vise-versa. Even several mutation can be stitched to one another.

Enjoy