graphql.kickstart.servlet.input.GraphQLInvocationInputFactory Maven / Gradle / Ivy

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package graphql.kickstart.servlet.input;

import graphql.kickstart.execution.GraphQLRequest;
import graphql.kickstart.execution.config.GraphQLSchemaProvider;
import graphql.kickstart.execution.context.ContextSetting;
import graphql.kickstart.execution.input.GraphQLBatchedInvocationInput;
import graphql.kickstart.execution.input.GraphQLSingleInvocationInput;
import graphql.kickstart.execution.subscriptions.GraphQLSubscriptionInvocationInputFactory;
import graphql.kickstart.execution.subscriptions.SubscriptionSession;
import graphql.kickstart.servlet.config.DefaultGraphQLSchemaServletProvider;
import graphql.kickstart.servlet.config.GraphQLSchemaServletProvider;
import graphql.kickstart.servlet.context.DefaultGraphQLServletContextBuilder;
import graphql.kickstart.servlet.context.GraphQLServletContextBuilder;
import graphql.kickstart.servlet.core.DefaultGraphQLRootObjectBuilder;
import graphql.kickstart.servlet.core.GraphQLServletRootObjectBuilder;
import graphql.schema.GraphQLSchema;
import java.util.List;
import java.util.function.Supplier;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.websocket.Session;
import jakarta.websocket.server.HandshakeRequest;

/** @author Andrew Potter */
public class GraphQLInvocationInputFactory implements GraphQLSubscriptionInvocationInputFactory {

  private final Supplier schemaProviderSupplier;
  private final Supplier contextBuilderSupplier;
  private final Supplier rootObjectBuilderSupplier;

  protected GraphQLInvocationInputFactory(
      Supplier schemaProviderSupplier,
      Supplier contextBuilderSupplier,
      Supplier rootObjectBuilderSupplier) {
    this.schemaProviderSupplier = schemaProviderSupplier;
    this.contextBuilderSupplier = contextBuilderSupplier;
    this.rootObjectBuilderSupplier = rootObjectBuilderSupplier;
  }

  public static Builder newBuilder(GraphQLSchema schema) {
    return new Builder(new DefaultGraphQLSchemaServletProvider(schema));
  }

  public static Builder newBuilder(GraphQLSchemaServletProvider schemaProvider) {
    return new Builder(schemaProvider);
  }

  public static Builder newBuilder(Supplier schemaProviderSupplier) {
    return new Builder(schemaProviderSupplier);
  }

  public GraphQLSchemaProvider getSchemaProvider() {
    return schemaProviderSupplier.get();
  }

  public GraphQLSingleInvocationInput create(
      GraphQLRequest graphQLRequest, HttpServletRequest request, HttpServletResponse response) {
    return create(graphQLRequest, request, response, false);
  }

  public GraphQLBatchedInvocationInput create(
      ContextSetting contextSetting,
      List graphQLRequests,
      HttpServletRequest request,
      HttpServletResponse response) {
    return create(contextSetting, graphQLRequests, request, response, false);
  }

  public GraphQLSingleInvocationInput createReadOnly(
      GraphQLRequest graphQLRequest, HttpServletRequest request, HttpServletResponse response) {
    return create(graphQLRequest, request, response, true);
  }

  public GraphQLBatchedInvocationInput createReadOnly(
      ContextSetting contextSetting,
      List graphQLRequests,
      HttpServletRequest request,
      HttpServletResponse response) {
    return create(contextSetting, graphQLRequests, request, response, true);
  }

  public GraphQLSingleInvocationInput create(GraphQLRequest graphQLRequest) {
    return new GraphQLSingleInvocationInput(
        graphQLRequest,
        schemaProviderSupplier.get().getSchema(),
        contextBuilderSupplier.get().build(),
        rootObjectBuilderSupplier.get().build());
  }

  private GraphQLSingleInvocationInput create(
      GraphQLRequest graphQLRequest,
      HttpServletRequest request,
      HttpServletResponse response,
      boolean readOnly) {
    return new GraphQLSingleInvocationInput(
        graphQLRequest,
        readOnly
            ? schemaProviderSupplier.get().getReadOnlySchema(request)
            : schemaProviderSupplier.get().getSchema(request),
        contextBuilderSupplier.get().build(request, response),
        rootObjectBuilderSupplier.get().build(request));
  }

  private GraphQLBatchedInvocationInput create(
      ContextSetting contextSetting,
      List graphQLRequests,
      HttpServletRequest request,
      HttpServletResponse response,
      boolean readOnly) {
    return contextSetting.getBatch(
        graphQLRequests,
        readOnly
            ? schemaProviderSupplier.get().getReadOnlySchema(request)
            : schemaProviderSupplier.get().getSchema(request),
        () -> contextBuilderSupplier.get().build(request, response),
        rootObjectBuilderSupplier.get().build(request));
  }

  @Override
  public GraphQLSingleInvocationInput create(
      GraphQLRequest graphQLRequest, SubscriptionSession session) {
    HandshakeRequest request =
        (HandshakeRequest) session.getUserProperties().get(HandshakeRequest.class.getName());
    return new GraphQLSingleInvocationInput(
        graphQLRequest,
        schemaProviderSupplier.get().getSchema(request),
        contextBuilderSupplier.get().build((Session) session.unwrap(), request),
        rootObjectBuilderSupplier.get().build(request));
  }

  public GraphQLBatchedInvocationInput create(
      ContextSetting contextSetting, List graphQLRequest, Session session) {
    HandshakeRequest request =
        (HandshakeRequest) session.getUserProperties().get(HandshakeRequest.class.getName());
    return contextSetting.getBatch(
        graphQLRequest,
        schemaProviderSupplier.get().getSchema(request),
        () -> contextBuilderSupplier.get().build(session, request),
        rootObjectBuilderSupplier.get().build(request));
  }

  public static class Builder {

    private final Supplier schemaProviderSupplier;
    private Supplier contextBuilderSupplier =
        DefaultGraphQLServletContextBuilder::new;
    private Supplier rootObjectBuilderSupplier =
        DefaultGraphQLRootObjectBuilder::new;

    public Builder(GraphQLSchemaServletProvider schemaProvider) {
      this(() -> schemaProvider);
    }

    public Builder(Supplier schemaProviderSupplier) {
      this.schemaProviderSupplier = schemaProviderSupplier;
    }

    public Builder withGraphQLContextBuilder(GraphQLServletContextBuilder contextBuilder) {
      return withGraphQLContextBuilder(() -> contextBuilder);
    }

    public Builder withGraphQLContextBuilder(
        Supplier contextBuilderSupplier) {
      this.contextBuilderSupplier = contextBuilderSupplier;
      return this;
    }

    public Builder withGraphQLRootObjectBuilder(GraphQLServletRootObjectBuilder rootObjectBuilder) {
      return withGraphQLRootObjectBuilder(() -> rootObjectBuilder);
    }

    public Builder withGraphQLRootObjectBuilder(
        Supplier rootObjectBuilderSupplier) {
      this.rootObjectBuilderSupplier = rootObjectBuilderSupplier;
      return this;
    }

    public GraphQLInvocationInputFactory build() {
      return new GraphQLInvocationInputFactory(
          schemaProviderSupplier, contextBuilderSupplier, rootObjectBuilderSupplier);
    }
  }
}