| /* |
| * |
| * 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. |
| * |
| */ |
| |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/client_channel/lb_policy_factory.h" |
| |
| grpc_lb_addresses* grpc_lb_addresses_create( |
| size_t num_addresses, const grpc_lb_user_data_vtable* user_data_vtable) { |
| grpc_lb_addresses* addresses = gpr_malloc(sizeof(grpc_lb_addresses)); |
| addresses->num_addresses = num_addresses; |
| addresses->user_data_vtable = user_data_vtable; |
| const size_t addresses_size = sizeof(grpc_lb_address) * num_addresses; |
| addresses->addresses = gpr_malloc(addresses_size); |
| memset(addresses->addresses, 0, addresses_size); |
| return addresses; |
| } |
| |
| grpc_lb_addresses* grpc_lb_addresses_copy(const grpc_lb_addresses* addresses) { |
| grpc_lb_addresses* new_addresses = grpc_lb_addresses_create( |
| addresses->num_addresses, addresses->user_data_vtable); |
| memcpy(new_addresses->addresses, addresses->addresses, |
| sizeof(grpc_lb_address) * addresses->num_addresses); |
| for (size_t i = 0; i < addresses->num_addresses; ++i) { |
| if (new_addresses->addresses[i].balancer_name != NULL) { |
| new_addresses->addresses[i].balancer_name = |
| gpr_strdup(new_addresses->addresses[i].balancer_name); |
| } |
| if (new_addresses->addresses[i].user_data != NULL) { |
| new_addresses->addresses[i].user_data = addresses->user_data_vtable->copy( |
| new_addresses->addresses[i].user_data); |
| } |
| } |
| return new_addresses; |
| } |
| |
| void grpc_lb_addresses_set_address(grpc_lb_addresses* addresses, size_t index, |
| void* address, size_t address_len, |
| bool is_balancer, char* balancer_name, |
| void* user_data) { |
| GPR_ASSERT(index < addresses->num_addresses); |
| if (user_data != NULL) GPR_ASSERT(addresses->user_data_vtable != NULL); |
| grpc_lb_address* target = &addresses->addresses[index]; |
| memcpy(target->address.addr, address, address_len); |
| target->address.len = address_len; |
| target->is_balancer = is_balancer; |
| target->balancer_name = balancer_name; |
| target->user_data = user_data; |
| } |
| |
| int grpc_lb_addresses_cmp(const grpc_lb_addresses* addresses1, |
| const grpc_lb_addresses* addresses2) { |
| if (addresses1->num_addresses > addresses2->num_addresses) return 1; |
| if (addresses1->num_addresses < addresses2->num_addresses) return -1; |
| if (addresses1->user_data_vtable > addresses2->user_data_vtable) return 1; |
| if (addresses1->user_data_vtable < addresses2->user_data_vtable) return -1; |
| for (size_t i = 0; i < addresses1->num_addresses; ++i) { |
| const grpc_lb_address* target1 = &addresses1->addresses[i]; |
| const grpc_lb_address* target2 = &addresses2->addresses[i]; |
| if (target1->address.len > target2->address.len) return 1; |
| if (target1->address.len < target2->address.len) return -1; |
| int retval = memcmp(target1->address.addr, target2->address.addr, |
| target1->address.len); |
| if (retval != 0) return retval; |
| if (target1->is_balancer > target2->is_balancer) return 1; |
| if (target1->is_balancer < target2->is_balancer) return -1; |
| const char* balancer_name1 = |
| target1->balancer_name != NULL ? target1->balancer_name : ""; |
| const char* balancer_name2 = |
| target2->balancer_name != NULL ? target2->balancer_name : ""; |
| retval = strcmp(balancer_name1, balancer_name2); |
| if (retval != 0) return retval; |
| if (addresses1->user_data_vtable != NULL) { |
| retval = addresses1->user_data_vtable->cmp(target1->user_data, |
| target2->user_data); |
| if (retval != 0) return retval; |
| } |
| } |
| return 0; |
| } |
| |
| void grpc_lb_addresses_destroy(grpc_lb_addresses* addresses) { |
| for (size_t i = 0; i < addresses->num_addresses; ++i) { |
| gpr_free(addresses->addresses[i].balancer_name); |
| if (addresses->addresses[i].user_data != NULL) { |
| addresses->user_data_vtable->destroy(addresses->addresses[i].user_data); |
| } |
| } |
| gpr_free(addresses->addresses); |
| gpr_free(addresses); |
| } |
| |
| static void* lb_addresses_copy(void* addresses) { |
| return grpc_lb_addresses_copy(addresses); |
| } |
| static void lb_addresses_destroy(void* addresses) { |
| grpc_lb_addresses_destroy(addresses); |
| } |
| static int lb_addresses_cmp(void* addresses1, void* addresses2) { |
| return grpc_lb_addresses_cmp(addresses1, addresses2); |
| } |
| static const grpc_arg_pointer_vtable lb_addresses_arg_vtable = { |
| lb_addresses_copy, lb_addresses_destroy, lb_addresses_cmp}; |
| |
| grpc_arg grpc_lb_addresses_create_channel_arg( |
| const grpc_lb_addresses* addresses) { |
| grpc_arg arg; |
| arg.type = GRPC_ARG_POINTER; |
| arg.key = GRPC_ARG_LB_ADDRESSES; |
| arg.value.pointer.p = (void*)addresses; |
| arg.value.pointer.vtable = &lb_addresses_arg_vtable; |
| return arg; |
| } |
| |
| void grpc_lb_policy_factory_ref(grpc_lb_policy_factory* factory) { |
| factory->vtable->ref(factory); |
| } |
| |
| void grpc_lb_policy_factory_unref(grpc_lb_policy_factory* factory) { |
| factory->vtable->unref(factory); |
| } |
| |
| grpc_lb_policy* grpc_lb_policy_factory_create_lb_policy( |
| grpc_exec_ctx* exec_ctx, grpc_lb_policy_factory* factory, |
| grpc_lb_policy_args* args) { |
| if (factory == NULL) return NULL; |
| return factory->vtable->create_lb_policy(exec_ctx, factory, args); |
| } |