Module io.helidon.graphql.server
Package io.helidon.graphql.server

Class InvocationHandler.Builder

java.lang.Object
io.helidon.graphql.server.InvocationHandler.Builder
All Implemented Interfaces:
Builder<InvocationHandler.Builder,InvocationHandler>, Supplier<InvocationHandler>
Enclosing interface:
InvocationHandler
public static class InvocationHandler.Builder extends Object implements Builder<InvocationHandler.Builder,InvocationHandler>
Fluent API builder to configure the invocation handler.

  • Method Details

    • build

      public InvocationHandler build()
      Description copied from interface: Builder
      Build the instance from this builder.
      Specified by:
      build in interface Builder<InvocationHandler.Builder,InvocationHandler>
      Returns:
      instance of the built type

    • config

      public InvocationHandler.Builder config(Config config)
      Update builder from configuration. Configuration options:
      Optional configuration parameters
      key default value description
      default-error-message "Server Error" Error message used for internal errors that are not whitelisted.
      exception-white-list   Array of exceptions classes. If an Error or a RuntimeException of this type is caught, its message will be propagated to the caller.
      exception-black-list   Array of exception classes. If a checked Exception is called, its message is propagated to the caller, unless it is in the blacklist.
      Parameters:
      config - configuration to use
      Returns:
      updated builder instance

    • schema

      public InvocationHandler.Builder schema(graphql.schema.GraphQLSchema schema)
      Configure the GraphQL schema to be used.
      Parameters:
      schema - schema to handle by this support
      Returns:
      updated builder instance

    • defaultErrorMessage

      public InvocationHandler.Builder defaultErrorMessage(String defaultErrorMessage)
      Default error message to return when an internal server error occurs.
      Parameters:
      defaultErrorMessage - default error message
      Returns:
      updated builder instance

    • exceptionBlacklist

      public InvocationHandler.Builder exceptionBlacklist(String[] classNames)
      Blacklisted error classes that will not return error message back to caller.
      Parameters:
      classNames - names of classes to deny for checked exceptions
      Returns:
      updated builder instance

    • addBlacklistedException

      public InvocationHandler.Builder addBlacklistedException(String exceptionClass)
      Add an exception to the blacklist. If a blacklisted exception is thrown, defaultErrorMessage(String) is returned instead.
      Parameters:
      exceptionClass - exception to blacklist
      Returns:
      updated builder instance

    • exceptionWhitelist

      public InvocationHandler.Builder exceptionWhitelist(String[] classNames)
      Whitelisted error classes that will return error message back to caller.
      Parameters:
      classNames - names of classes to allow for runtime exceptions and errors
      Returns:
      updated builder instance

    • addWhitelistedException

      public InvocationHandler.Builder addWhitelistedException(String exceptionClass)
      Add an exception to the whitelist. If a whitelisted exception is thrown, its message is returned, otherwise defaultErrorMessage(String) is returned.
      Parameters:
      exceptionClass - exception to whitelist
      Returns:
      updated builder instance