David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2016, Google Inc. |
| 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 | |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 34 | #include <grpc/support/alloc.h> |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 35 | #include <grpc/support/log.h> |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 36 | #include <grpc/support/string_util.h> |
David Garcia Quintas | 0d83db5 | 2016-05-04 00:14:14 -0700 | [diff] [blame] | 37 | #include <grpc/support/sync.h> |
David Garcia Quintas | 4bb11ac | 2016-05-02 09:20:21 -0700 | [diff] [blame] | 38 | #include <string.h> |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 39 | |
David Garcia Quintas | b41363e | 2016-04-29 00:41:21 -0700 | [diff] [blame] | 40 | #include "src/core/ext/load_reporting/load_reporting.h" |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 41 | #include "src/core/ext/load_reporting/load_reporting_filter.h" |
| 42 | #include "src/core/lib/channel/channel_args.h" |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 43 | #include "src/core/lib/profiling/timers.h" |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 44 | #include "src/core/lib/transport/static_metadata.h" |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 45 | |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 46 | typedef struct call_data { |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 47 | intptr_t id; /**< an id unique to the call */ |
| 48 | char *trailing_md_string; |
| 49 | char *initial_md_string; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 50 | const char *service_method; |
| 51 | |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 52 | /* stores the recv_initial_metadata op's ready closure, which we wrap with our |
| 53 | * own (on_initial_md_ready) in order to capture the incoming initial metadata |
| 54 | * */ |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 55 | grpc_closure *ops_recv_initial_metadata_ready; |
| 56 | |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 57 | /* to get notified of the availability of the incoming initial metadata. */ |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 58 | grpc_closure on_initial_md_ready; |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 59 | grpc_metadata_batch *recv_initial_metadata; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 60 | } call_data; |
| 61 | |
David Garcia Quintas | 0d83db5 | 2016-05-04 00:14:14 -0700 | [diff] [blame] | 62 | typedef struct channel_data { |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 63 | intptr_t id; /**< an id unique to the channel */ |
David Garcia Quintas | 0d83db5 | 2016-05-04 00:14:14 -0700 | [diff] [blame] | 64 | } channel_data; |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 65 | |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 66 | typedef struct { |
| 67 | grpc_call_element *elem; |
| 68 | grpc_exec_ctx *exec_ctx; |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 69 | } recv_md_filter_args; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 70 | |
| 71 | static grpc_mdelem *recv_md_filter(void *user_data, grpc_mdelem *md) { |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 72 | recv_md_filter_args *a = user_data; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 73 | grpc_call_element *elem = a->elem; |
| 74 | call_data *calld = elem->call_data; |
| 75 | |
| 76 | if (md->key == GRPC_MDSTR_PATH) { |
| 77 | calld->service_method = grpc_mdstr_as_c_string(md->value); |
| 78 | } else if (md->key == GRPC_MDSTR_LOAD_REPORTING_INITIAL) { |
| 79 | calld->initial_md_string = gpr_strdup(grpc_mdstr_as_c_string(md->value)); |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 80 | return NULL; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | return md; |
| 84 | } |
| 85 | |
| 86 | static void on_initial_md_ready(grpc_exec_ctx *exec_ctx, void *user_data, |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 87 | grpc_error *err) { |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 88 | grpc_call_element *elem = user_data; |
| 89 | call_data *calld = elem->call_data; |
| 90 | |
| 91 | if (err == GRPC_ERROR_NONE) { |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 92 | recv_md_filter_args a; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 93 | a.elem = elem; |
| 94 | a.exec_ctx = exec_ctx; |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 95 | grpc_metadata_batch_filter(calld->recv_initial_metadata, recv_md_filter, |
| 96 | &a); |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 97 | if (calld->service_method == NULL) { |
| 98 | err = |
| 99 | grpc_error_add_child(err, GRPC_ERROR_CREATE("Missing :path header")); |
| 100 | } |
| 101 | } else { |
| 102 | GRPC_ERROR_REF(err); |
| 103 | } |
| 104 | calld->ops_recv_initial_metadata_ready->cb( |
| 105 | exec_ctx, calld->ops_recv_initial_metadata_ready->cb_arg, err); |
| 106 | GRPC_ERROR_UNREF(err); |
| 107 | } |
| 108 | |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 109 | /* Constructor for call_data */ |
| 110 | static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 111 | grpc_call_element_args *args) { |
| 112 | call_data *calld = elem->call_data; |
| 113 | memset(calld, 0, sizeof(call_data)); |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 114 | |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 115 | calld->id = (intptr_t)args->call_stack; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 116 | grpc_closure_init(&calld->on_initial_md_ready, on_initial_md_ready, elem); |
| 117 | |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 118 | /* TODO(dgq): do something with the data |
| 119 | channel_data *chand = elem->channel_data; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 120 | grpc_load_reporting_call_data lr_call_data = {GRPC_LR_POINT_CALL_CREATION, |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 121 | (intptr_t)chand->id, |
| 122 | (intptr_t)calld->id, |
| 123 | NULL, |
| 124 | NULL, |
| 125 | NULL, |
| 126 | NULL}; |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 127 | */ |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 128 | } |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 129 | |
| 130 | /* Destructor for call_data */ |
David Garcia Quintas | a523486 | 2016-04-14 15:08:43 -0700 | [diff] [blame] | 131 | static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 132 | const grpc_call_final_info *final_info, |
| 133 | void *ignored) { |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 134 | call_data *calld = elem->call_data; |
| 135 | |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 136 | /* TODO(dgq): do something with the data |
| 137 | channel_data *chand = elem->channel_data; |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 138 | grpc_load_reporting_call_data lr_call_data = {GRPC_LR_POINT_CALL_DESTRUCTION, |
| 139 | (intptr_t)chand->id, |
| 140 | (intptr_t)calld->id, |
| 141 | final_info, |
| 142 | calld->initial_md_string, |
| 143 | calld->trailing_md_string, |
| 144 | calld->service_method}; |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 145 | */ |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 146 | |
| 147 | gpr_free(calld->initial_md_string); |
| 148 | gpr_free(calld->trailing_md_string); |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | /* Constructor for channel_data */ |
| 152 | static void init_channel_elem(grpc_exec_ctx *exec_ctx, |
| 153 | grpc_channel_element *elem, |
| 154 | grpc_channel_element_args *args) { |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 155 | GPR_ASSERT(!args->is_last); |
David Garcia Quintas | b41363e | 2016-04-29 00:41:21 -0700 | [diff] [blame] | 156 | |
| 157 | channel_data *chand = elem->channel_data; |
| 158 | memset(chand, 0, sizeof(channel_data)); |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 159 | |
| 160 | chand->id = (intptr_t)args->channel_stack; |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 161 | |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 162 | /* TODO(dgq): do something with the data |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 163 | grpc_load_reporting_call_data lr_call_data = {GRPC_LR_POINT_CHANNEL_CREATION, |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 164 | (intptr_t)chand, |
| 165 | 0, |
| 166 | NULL, |
| 167 | NULL, |
| 168 | NULL, |
| 169 | NULL}; |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 170 | */ |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | /* Destructor for channel data */ |
| 174 | static void destroy_channel_elem(grpc_exec_ctx *exec_ctx, |
David Garcia Quintas | b41363e | 2016-04-29 00:41:21 -0700 | [diff] [blame] | 175 | grpc_channel_element *elem) { |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 176 | /* TODO(dgq): do something with the data |
David Garcia Quintas | b41363e | 2016-04-29 00:41:21 -0700 | [diff] [blame] | 177 | channel_data *chand = elem->channel_data; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 178 | grpc_load_reporting_call_data lr_call_data = { |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 179 | GRPC_LR_POINT_CHANNEL_DESTRUCTION, |
| 180 | (intptr_t)chand->id, |
| 181 | 0, |
| 182 | NULL, |
| 183 | NULL, |
| 184 | NULL, |
| 185 | NULL}; |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 186 | */ |
David Garcia Quintas | b41363e | 2016-04-29 00:41:21 -0700 | [diff] [blame] | 187 | } |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 188 | |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 189 | static grpc_mdelem *lr_trailing_md_filter(void *user_data, grpc_mdelem *md) { |
| 190 | grpc_call_element *elem = user_data; |
| 191 | call_data *calld = elem->call_data; |
| 192 | |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 193 | if (md->key == GRPC_MDSTR_LOAD_REPORTING_TRAILING) { |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 194 | calld->trailing_md_string = gpr_strdup(grpc_mdstr_as_c_string(md->value)); |
David Garcia Quintas | fa30de9 | 2016-07-26 19:52:13 -0700 | [diff] [blame] | 195 | return NULL; |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | return md; |
| 199 | } |
| 200 | |
| 201 | static void lr_start_transport_stream_op(grpc_exec_ctx *exec_ctx, |
| 202 | grpc_call_element *elem, |
| 203 | grpc_transport_stream_op *op) { |
| 204 | GPR_TIMER_BEGIN("lr_start_transport_stream_op", 0); |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 205 | call_data *calld = elem->call_data; |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 206 | |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 207 | if (op->recv_initial_metadata) { |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 208 | calld->recv_initial_metadata = op->recv_initial_metadata; |
David Garcia Quintas | 6eee24c | 2016-07-11 22:56:50 -0700 | [diff] [blame] | 209 | /* substitute our callback for the higher callback */ |
| 210 | calld->ops_recv_initial_metadata_ready = op->recv_initial_metadata_ready; |
David Garcia Quintas | 01c4d99 | 2016-07-07 20:11:27 -0700 | [diff] [blame] | 211 | op->recv_initial_metadata_ready = &calld->on_initial_md_ready; |
| 212 | } else if (op->send_trailing_metadata) { |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 213 | grpc_metadata_batch_filter(op->send_trailing_metadata, |
| 214 | lr_trailing_md_filter, elem); |
| 215 | } |
| 216 | grpc_call_next_op(exec_ctx, elem, op); |
| 217 | |
| 218 | GPR_TIMER_END("lr_start_transport_stream_op", 0); |
| 219 | } |
| 220 | |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 221 | const grpc_channel_filter grpc_load_reporting_filter = { |
David Garcia Quintas | 1621c4d | 2016-05-04 19:44:37 -0700 | [diff] [blame] | 222 | lr_start_transport_stream_op, |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 223 | grpc_channel_next_op, |
| 224 | sizeof(call_data), |
| 225 | init_call_elem, |
David Garcia Quintas | 1cf4ec7 | 2016-06-06 16:33:14 -0700 | [diff] [blame] | 226 | grpc_call_stack_ignore_set_pollset_or_pollset_set, |
David Garcia Quintas | 862c8e9 | 2016-04-06 16:30:51 -0700 | [diff] [blame] | 227 | destroy_call_elem, |
| 228 | sizeof(channel_data), |
| 229 | init_channel_elem, |
| 230 | destroy_channel_elem, |
| 231 | grpc_call_next_get_peer, |
| 232 | "load_reporting"}; |