Module evita.external.api.graphql

Package io.evitadb.externalApi.graphql.io

Class GraphQLHandler

java.lang.Object

io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

io.evitadb.externalApi.graphql.io.GraphQLHandler

All Implemented Interfaces:

io.undertow.server.HttpHandler

public class GraphQLHandler
extends io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

HTTP request handler for processing GraphQLRequests and returning GraphQLResponses using passed configured instance of GraphQL.

Author:

Lukáš Hornych, FG Forrest a.s. 2022

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static final record	GraphQLHandler.GraphQLEndpointExchange

Constructor Summary

Constructors

Constructor	Description
GraphQLHandler(com.fasterxml.jackson.databind.ObjectMapper objectMapper, Evita evita, AtomicReference<graphql.GraphQL> graphQL)

Method Summary

Modifier and Type	Method	Description
protected GraphQLHandler.GraphQLEndpointExchange	createEndpointExchange(io.undertow.server.HttpServerExchange serverExchange, String httpMethod, String requestBodyMediaType, String preferredResponseMediaType)
protected <T extends io.evitadb.externalApi.exception.ExternalApiInternalError> T	createInternalError(String message)
protected <T extends io.evitadb.externalApi.exception.ExternalApiInternalError> T	createInternalError(String message, Throwable cause)
protected <T extends io.evitadb.externalApi.exception.ExternalApiInvalidUsageException> T	createInvalidUsageException(String message)
protected io.evitadb.externalApi.http.EndpointResponse	doHandleRequest(GraphQLHandler.GraphQLEndpointExchange exchange)
Set<String>	getSupportedHttpMethods()
Set<String>	getSupportedRequestContentTypes()
LinkedHashSet<String>	getSupportedResponseContentTypes()
void	handleRequest(io.undertow.server.HttpServerExchange serverExchange)
protected <T> T	parseRequestBody(GraphQLHandler.GraphQLEndpointExchange exchange, Class<T> dataClass)
protected void	writeResult(GraphQLHandler.GraphQLEndpointExchange exchange, OutputStream outputStream, Object response)

Methods inherited from class io.evitadb.externalApi.http.EndpointHandler

afterRequestHandled, beforeRequestHandled, readRawRequestBody, validateRequest

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GraphQLHandler

public GraphQLHandler(@Nonnull
 com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 @Nonnull
 Evita evita,
 @Nonnull
 AtomicReference<graphql.GraphQL> graphQL)

Method Details

createEndpointExchange

@Nonnull
protected GraphQLHandler.GraphQLEndpointExchange createEndpointExchange(@Nonnull
 io.undertow.server.HttpServerExchange serverExchange,
 @Nonnull
 String httpMethod,
 @Nullable
 String requestBodyMediaType,
 @Nullable
 String preferredResponseMediaType)

Specified by:

createEndpointExchange in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

handleRequest

public void handleRequest(io.undertow.server.HttpServerExchange serverExchange)

Specified by:

handleRequest in interface io.undertow.server.HttpHandler

Overrides:

handleRequest in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

doHandleRequest

@Nonnull
protected io.evitadb.externalApi.http.EndpointResponse doHandleRequest(@Nonnull
 GraphQLHandler.GraphQLEndpointExchange exchange)

Specified by:

doHandleRequest in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

createInternalError

@Nonnull
protected <T extends io.evitadb.externalApi.exception.ExternalApiInternalError>
T createInternalError(@Nonnull
 String message)

Specified by:

createInternalError in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

createInternalError

@Nonnull
protected <T extends io.evitadb.externalApi.exception.ExternalApiInternalError>
T createInternalError(@Nonnull
 String message,
 @Nonnull
 Throwable cause)

Specified by:

createInternalError in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

createInvalidUsageException

@Nonnull
protected <T extends io.evitadb.externalApi.exception.ExternalApiInvalidUsageException>
T createInvalidUsageException(@Nonnull
 String message)

Specified by:

createInvalidUsageException in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

getSupportedHttpMethods

@Nonnull
public Set<String> getSupportedHttpMethods()

Specified by:

getSupportedHttpMethods in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

getSupportedRequestContentTypes

@Nonnull
public Set<String> getSupportedRequestContentTypes()

Overrides:

getSupportedRequestContentTypes in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

getSupportedResponseContentTypes

@Nonnull
public LinkedHashSet<String> getSupportedResponseContentTypes()

Overrides:

getSupportedResponseContentTypes in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

parseRequestBody

@Nonnull
protected <T> T parseRequestBody(@Nonnull
 GraphQLHandler.GraphQLEndpointExchange exchange,
 @Nonnull
 Class<T> dataClass)

Overrides:

parseRequestBody in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>

writeResult

protected void writeResult(@Nonnull
 GraphQLHandler.GraphQLEndpointExchange exchange,
 @Nonnull
 OutputStream outputStream,
 @Nonnull
 Object response)

Overrides:

writeResult in class io.evitadb.externalApi.http.EndpointHandler<GraphQLHandler.GraphQLEndpointExchange>