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#ifndef GRPC_TEST_CORE_END2END_FAKE_RESOLVER_H
#define GRPC_TEST_CORE_END2END_FAKE_RESOLVER_H

#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
#include "src/core/ext/filters/client_channel/uri_parser.h"
#include "src/core/lib/channel/channel_args.h"

#include "test/core/util/test_config.h"

#define GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR \
  "grpc.fake_resolver.response_generator"

void grpc_fake_resolver_init();

// Instances of \a grpc_fake_resolver_response_generator are passed to the
// fake resolver in a channel argument (see \a
// grpc_fake_resolver_response_generator_arg) in order to inject and trigger
// custom resolutions. See also \a
// grpc_fake_resolver_response_generator_set_response.
typedef struct grpc_fake_resolver_response_generator
    grpc_fake_resolver_response_generator;
grpc_fake_resolver_response_generator*
grpc_fake_resolver_response_generator_create();

// Instruct the fake resolver associated with the \a response_generator instance
// to trigger a new resolution for \a uri and \a args.
void grpc_fake_resolver_response_generator_set_response(
    grpc_exec_ctx* exec_ctx, grpc_fake_resolver_response_generator* generator,
    grpc_channel_args* next_response);

// Return a \a grpc_arg for a \a grpc_fake_resolver_response_generator instance.
grpc_arg grpc_fake_resolver_response_generator_arg(
    grpc_fake_resolver_response_generator* generator);
// Return the \a grpc_fake_resolver_response_generator instance in \a args or
// NULL.
grpc_fake_resolver_response_generator*
grpc_fake_resolver_get_response_generator(const grpc_channel_args* args);

grpc_fake_resolver_response_generator*
grpc_fake_resolver_response_generator_ref(
    grpc_fake_resolver_response_generator* generator);
void grpc_fake_resolver_response_generator_unref(
    grpc_fake_resolver_response_generator* generator);

#endif /* GRPC_TEST_CORE_END2END_FAKE_RESOLVER_H */