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//
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#ifndef GRPC_CORE_EXT_CLIENT_CONFIG_RESOLVER_RESULT_H
#define GRPC_CORE_EXT_CLIENT_CONFIG_RESOLVER_RESULT_H
#include <stdbool.h>
#include "src/core/ext/client_config/lb_policy.h"
#include "src/core/lib/iomgr/resolve_address.h"
/// Used to represent addresses returned by the resolver.
typedef struct grpc_address {
grpc_resolved_address address;
bool is_balancer;
} grpc_address;
typedef struct grpc_addresses {
size_t num_addresses;
grpc_address* addresses;
} grpc_addresses;
/// Returns a grpc_addresses struct with enough space for
/// \a num_addresses addresses.
grpc_addresses* grpc_addresses_create(size_t num_addresses);
grpc_addresses* grpc_addresses_copy(grpc_addresses* addresses);
void grpc_addresses_set_address(grpc_addresses* addresses, size_t index,
void* address, size_t address_len,
bool is_balancer);
void grpc_addresses_destroy(grpc_addresses* addresses);
/// Per-method configuration.
typedef struct grpc_method_config grpc_method_config;
/// Any parameter may be NULL to indicate that the value is unset.
grpc_method_config* grpc_method_config_create(
bool* wait_for_ready, gpr_timespec* timeout,
int32_t* max_request_message_bytes, int32_t* max_response_message_bytes);
grpc_method_config* grpc_method_config_ref(grpc_method_config* method_config);
void grpc_method_config_unref(grpc_method_config* method_config);
/// These methods return NULL if the requested field is unset.
/// The caller does NOT take ownership of the result.
bool* grpc_method_config_get_wait_for_ready(grpc_method_config* method_config);
gpr_timespec* grpc_method_config_get_timeout(grpc_method_config* method_config);
int32_t* grpc_method_config_get_max_request_message_bytes(
grpc_method_config* method_config);
int32_t* grpc_method_config_get_max_response_message_bytes(
grpc_method_config* method_config);
/// Results reported from a grpc_resolver.
typedef struct grpc_resolver_result grpc_resolver_result;
/// Takes ownership of \a addresses.
grpc_resolver_result* grpc_resolver_result_create(grpc_addresses* addresses,
const char* lb_policy_name);
void grpc_resolver_result_ref(grpc_resolver_result* result);
void grpc_resolver_result_unref(grpc_exec_ctx* exec_ctx,
grpc_resolver_result* result);
/// Caller does NOT take ownership of result.
grpc_addresses* grpc_resolver_result_get_addresses(
grpc_resolver_result* result);
/// Caller does NOT take ownership of result.
const char* grpc_resolver_result_get_lb_policy_name(
grpc_resolver_result* result);
/// Adds a method config. \a paths indicates the set of path names
/// for which this config applies. Each name is of one of the following
/// forms:
/// service/method -- specifies exact service and method name
/// service/* -- matches all methods for the specified service
/// * -- matches all methods for all services
/// Takes new references to all elements of \a paths and to \a method_config.
void grpc_resolver_result_add_method_config(grpc_resolver_result* result,
grpc_mdstr** paths,
size_t num_paths,
grpc_method_config* method_config);
/// Returns NULL if the method has no config.
/// Caller does NOT take ownership of result.
grpc_method_config* grpc_resolver_result_get_method_config(
grpc_resolver_result* result, grpc_mdstr* path);
#endif /* GRPC_CORE_EXT_CLIENT_CONFIG_RESOLVER_RESULT_H */
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