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https://issues.apache.org/jira/browse/CAMEL-12854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16788198#comment-16788198
]
Hiram Chirino edited comment on CAMEL-12854 at 3/8/19 7:11 PM:
---------------------------------------------------------------
*Ideas*:
*1.* issuing a GraphQL query against an http GraphQL endpoint:
{code:java}
...to("graphql:http://theurl?query='{put{some(param){here}}}'&variable.param='value'")
{code}
*2.* Setting up a GraphQL subscription
{code:java}
from("graphql:http://theurl?subscription='{put{some(param){here}}}'&variable.param='value'")
{code}
*3.* Perhaps hitting a GraphQL engine (
[https://github.com/graphql-java/graphql-java] ) directly.
{code:java}
// first register a graphql.GraphQL instance as mygraphqlbean
...to("graphql:bean:mygraphqlbean?query='{put{some(param){here}}}'&variable.param='value'"){code}
*4.* Implementing GraphQL data fetchers with camel routes. Something like:
{code:java}
// Implement a helper method to make it easy to attach a data fetch to given
GraphQL field:
RuntimeWiring.Builder fetchWithCamel(final RuntimeWiring.Builder builder,
String graphQLType , String graphQLField, CamelContext camelContext, String
camelEndpoint) {
final ProducerTemplate template = context.createProducerTemplate();
builder.type(graphQLType, builder -> builder
.dataFetcher(graphQLField, env->{
return template.requestBody(endpoint, env);
})
);
return builder;
}
// Then use it to create a GraphQL object:
final CamelContext context = ...
String schema = "type Query{hello: String}";
SchemaParser schemaParser = new SchemaParser();
TypeDefinitionRegistry typeDefinitionRegistry = schemaParser.parse(schema);
RuntimeWiring.Builder builder = newRuntimeWiring()
fetchWithCamel(builder, "Query", "hello", context, "direct:hello")
RuntimeWiring runtimeWiring = builder.build();
SchemaGenerator schemaGenerator = new SchemaGenerator();
GraphQLSchema graphQLSchema =
schemaGenerator.makeExecutableSchema(typeDefinitionRegistry, runtimeWiring);
GraphQL graphql = GraphQL.newGraphQL(graphQLSchema).build();
{code}
was (Author: chirino):
*Ideas*:
*1.* issuing a GraphQL query against an http GraphQL endpoint:
{code:java}
...to("graphql:http://theurl?query='{put{some(param){here}}}'&variable.param='value'")
{code}
*2.* Perhaps hitting a GraphQL engine (
[https://github.com/graphql-java/graphql-java] ) directly.
{code:java}
// first register a graphql.GraphQL instance as mygraphqlbean
...to("graphql:bean:mygraphqlbean?query='{put{some(param){here}}}'&variable.param='value'"){code}
*3.* Implementing GraphQL data fetchers with camel routes. Something like:
{code:java}
// Implement a helper method to make it easy to attach a data fetch to given
GraphQL field:
RuntimeWiring.Builder fetchWithCamel(final RuntimeWiring.Builder builder,
String graphQLType , String graphQLField, CamelContext camelContext, String
camelEndpoint) {
final ProducerTemplate template = context.createProducerTemplate();
builder.type(graphQLType, builder -> builder
.dataFetcher(graphQLField, env->{
return template.requestBody(endpoint, env);
})
);
return builder;
}
// Then use it to create a GraphQL object:
final CamelContext context = ...
String schema = "type Query{hello: String}";
SchemaParser schemaParser = new SchemaParser();
TypeDefinitionRegistry typeDefinitionRegistry = schemaParser.parse(schema);
RuntimeWiring.Builder builder = newRuntimeWiring()
fetchWithCamel(builder, "Query", "hello", context, "direct:hello")
RuntimeWiring runtimeWiring = builder.build();
SchemaGenerator schemaGenerator = new SchemaGenerator();
GraphQLSchema graphQLSchema =
schemaGenerator.makeExecutableSchema(typeDefinitionRegistry, runtimeWiring);
GraphQL graphql = GraphQL.newGraphQL(graphQLSchema).build();
{code}
> Provide a GraphQL component
> ---------------------------
>
> Key: CAMEL-12854
> URL: https://issues.apache.org/jira/browse/CAMEL-12854
> Project: Camel
> Issue Type: New Feature
> Reporter: Aurélien Pupier
> Priority: Major
> Labels: gsoc2019
>
> GraphQl is a growing and interesting technology https://graphql.org/learn/
> It is providing query language for API, it can be interesting to have it in
> Camel.
> To investigate what would be interesting capabilities for it, created this
> issue to gather ideas.
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