David Garcia Quintas | 5c4543d | 2015-09-03 15:49:56 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
David Garcia Quintas | 3598d44 | 2016-03-15 14:53:05 -0700 | [diff] [blame] | 3 | * Copyright 2015-2016, Google Inc. |
David Garcia Quintas | 5c4543d | 2015-09-03 15:49:56 -0700 | [diff] [blame] | 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
Craig Tiller | 9a4dddd | 2016-03-25 17:08:13 -0700 | [diff] [blame] | 34 | #ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H |
| 35 | #define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H |
David Garcia Quintas | 5c4543d | 2015-09-03 15:49:56 -0700 | [diff] [blame] | 36 | |
| 37 | #include "src/core/client_config/lb_policy.h" |
| 38 | #include "src/core/client_config/subchannel.h" |
| 39 | |
| 40 | typedef struct grpc_lb_policy_factory grpc_lb_policy_factory; |
| 41 | typedef struct grpc_lb_policy_factory_vtable grpc_lb_policy_factory_vtable; |
| 42 | |
| 43 | /** grpc_lb_policy provides grpc_client_config objects to grpc_channel |
| 44 | objects */ |
| 45 | struct grpc_lb_policy_factory { |
| 46 | const grpc_lb_policy_factory_vtable *vtable; |
| 47 | }; |
| 48 | |
David Garcia Quintas | c7705c7 | 2015-09-09 17:21:11 -0700 | [diff] [blame] | 49 | typedef struct grpc_lb_policy_args { |
| 50 | grpc_subchannel **subchannels; |
| 51 | size_t num_subchannels; |
| 52 | } grpc_lb_policy_args; |
| 53 | |
David Garcia Quintas | 5c4543d | 2015-09-03 15:49:56 -0700 | [diff] [blame] | 54 | struct grpc_lb_policy_factory_vtable { |
| 55 | void (*ref)(grpc_lb_policy_factory *factory); |
| 56 | void (*unref)(grpc_lb_policy_factory *factory); |
| 57 | |
| 58 | /** Implementation of grpc_lb_policy_factory_create_lb_policy */ |
| 59 | grpc_lb_policy *(*create_lb_policy)(grpc_lb_policy_factory *factory, |
David Garcia Quintas | c7705c7 | 2015-09-09 17:21:11 -0700 | [diff] [blame] | 60 | grpc_lb_policy_args *args); |
David Garcia Quintas | 5c4543d | 2015-09-03 15:49:56 -0700 | [diff] [blame] | 61 | |
| 62 | /** Name for the LB policy this factory implements */ |
| 63 | const char *name; |
| 64 | }; |
| 65 | |
| 66 | void grpc_lb_policy_factory_ref(grpc_lb_policy_factory *factory); |
| 67 | void grpc_lb_policy_factory_unref(grpc_lb_policy_factory *factory); |
| 68 | |
| 69 | /** Create a lb_policy instance. */ |
| 70 | grpc_lb_policy *grpc_lb_policy_factory_create_lb_policy( |
David Garcia Quintas | c7705c7 | 2015-09-09 17:21:11 -0700 | [diff] [blame] | 71 | grpc_lb_policy_factory *factory, grpc_lb_policy_args *args); |
David Garcia Quintas | 5c4543d | 2015-09-03 15:49:56 -0700 | [diff] [blame] | 72 | |
Craig Tiller | 9a4dddd | 2016-03-25 17:08:13 -0700 | [diff] [blame] | 73 | #endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H */ |