Move census_filters from .../channel to .../census

2 files changed, 0 insertions, 241 deletions

diff --git a/src/core/channel/census_filter.c b/src/core/channel/census_filter.c
deleted file mode 100644
index 53d70be356..0000000000
--- a/src/core/channel/census_filter.c
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- *
- * 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 "src/core/channel/census_filter.h"
-
-#include <stdio.h>
-#include <string.h>
-
-#include "include/grpc/census.h"
-#include "src/core/census/rpc_stat_id.h"
-#include "src/core/channel/channel_stack.h"
-#include "src/core/channel/noop_filter.h"
-#include "src/core/statistics/census_interface.h"
-#include "src/core/statistics/census_rpc_stats.h"
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/slice.h>
-#include <grpc/support/time.h>
-
-typedef struct call_data {
-  census_op_id op_id;
-  census_context* ctxt;
-  gpr_timespec start_ts;
-  int error;
-
-  /* recv callback */
-  grpc_stream_op_buffer* recv_ops;
-  grpc_iomgr_closure* on_done_recv;
-} call_data;
-
-typedef struct channel_data {
-  grpc_mdstr* path_str; /* pointer to meta data str with key == ":path" */
-} channel_data;
-
-static void extract_and_annotate_method_tag(grpc_stream_op_buffer* sopb,
-                                            call_data* calld,
-                                            channel_data* chand) {
-  grpc_linked_mdelem* m;
-  size_t i;
-  for (i = 0; i < sopb->nops; i++) {
-    grpc_stream_op* op = &sopb->ops[i];
-    if (op->type != GRPC_OP_METADATA) continue;
-    for (m = op->data.metadata.list.head; m != NULL; m = m->next) {
-      if (m->md->key == chand->path_str) {
-        gpr_log(GPR_DEBUG, "%s",
-                (const char*)GPR_SLICE_START_PTR(m->md->value->slice));
-        /* Add method tag here */
-      }
-    }
-  }
-}
-
-static void client_mutate_op(grpc_call_element* elem,
-                             grpc_transport_stream_op* op) {
-  call_data* calld = elem->call_data;
-  channel_data* chand = elem->channel_data;
-  if (op->send_ops) {
-    extract_and_annotate_method_tag(op->send_ops, calld, chand);
-  }
-}
-
-static void client_start_transport_op(grpc_call_element* elem,
-                                      grpc_transport_stream_op* op) {
-  client_mutate_op(elem, op);
-  grpc_call_next_op(elem, op);
-}
-
-static void server_on_done_recv(void* ptr, int success) {
-  grpc_call_element* elem = ptr;
-  call_data* calld = elem->call_data;
-  channel_data* chand = elem->channel_data;
-  if (success) {
-    extract_and_annotate_method_tag(calld->recv_ops, calld, chand);
-  }
-  calld->on_done_recv->cb(calld->on_done_recv->cb_arg, success);
-}
-
-static void server_mutate_op(grpc_call_element* elem,
-                             grpc_transport_stream_op* op) {
-  call_data* calld = elem->call_data;
-  if (op->recv_ops) {
-    /* substitute our callback for the op callback */
-    calld->recv_ops = op->recv_ops;
-    calld->on_done_recv = op->on_done_recv;
-    op->on_done_recv = calld->on_done_recv;
-  }
-}
-
-static void server_start_transport_op(grpc_call_element* elem,
-                                      grpc_transport_stream_op* op) {
-  call_data* calld = elem->call_data;
-  GPR_ASSERT((calld->op_id.upper != 0) || (calld->op_id.lower != 0));
-  server_mutate_op(elem, op);
-  grpc_call_next_op(elem, op);
-}
-
-static void client_init_call_elem(grpc_call_element* elem,
-                                  const void* server_transport_data,
-                                  grpc_transport_stream_op* initial_op) {
-  call_data* d = elem->call_data;
-  GPR_ASSERT(d != NULL);
-  d->start_ts = gpr_now(GPR_CLOCK_REALTIME);
-  if (initial_op) client_mutate_op(elem, initial_op);
-}
-
-static void client_destroy_call_elem(grpc_call_element* elem) {
-  call_data* d = elem->call_data;
-  GPR_ASSERT(d != NULL);
-  /* TODO(hongyu): record rpc client stats and census_rpc_end_op here */
-}
-
-static void server_init_call_elem(grpc_call_element* elem,
-                                  const void* server_transport_data,
-                                  grpc_transport_stream_op* initial_op) {
-  call_data* d = elem->call_data;
-  GPR_ASSERT(d != NULL);
-  d->start_ts = gpr_now(GPR_CLOCK_REALTIME);
-  /* TODO(hongyu): call census_tracing_start_op here. */
-  grpc_iomgr_closure_init(d->on_done_recv, server_on_done_recv, elem);
-  if (initial_op) server_mutate_op(elem, initial_op);
-}
-
-static void server_destroy_call_elem(grpc_call_element* elem) {
-  call_data* d = elem->call_data;
-  GPR_ASSERT(d != NULL);
-  /* TODO(hongyu): record rpc server stats and census_tracing_end_op here */
-}
-
-static void init_channel_elem(grpc_channel_element* elem, grpc_channel* master,
-                              const grpc_channel_args* args, grpc_mdctx* mdctx,
-                              int is_first, int is_last) {
-  channel_data* chand = elem->channel_data;
-  GPR_ASSERT(chand != NULL);
-  chand->path_str = grpc_mdstr_from_string(mdctx, ":path", 0);
-}
-
-static void destroy_channel_elem(grpc_channel_element* elem) {
-  channel_data* chand = elem->channel_data;
-  GPR_ASSERT(chand != NULL);
-  if (chand->path_str != NULL) {
-    GRPC_MDSTR_UNREF(chand->path_str);
-  }
-}
-
-const grpc_channel_filter grpc_client_census_filter = {
-    client_start_transport_op,
-    grpc_channel_next_op,
-    sizeof(call_data),
-    client_init_call_elem,
-    client_destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    grpc_call_next_get_peer,
-    "census-client"};
-
-const grpc_channel_filter grpc_server_census_filter = {
-    server_start_transport_op,
-    grpc_channel_next_op,
-    sizeof(call_data),
-    server_init_call_elem,
-    server_destroy_call_elem,
-    sizeof(channel_data),
-    init_channel_elem,
-    destroy_channel_elem,
-    grpc_call_next_get_peer,
-    "census-server"};
diff --git a/src/core/channel/census_filter.h b/src/core/channel/census_filter.h
deleted file mode 100644
index 4f9759f0db..0000000000
--- a/src/core/channel/census_filter.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- *
- * 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_INTERNAL_CORE_CHANNEL_CENSUS_FILTER_H
-#define GRPC_INTERNAL_CORE_CHANNEL_CENSUS_FILTER_H
-
-#include "src/core/channel/channel_stack.h"
-
-/* Census filters: provides tracing and stats collection functionalities. It
-   needs to reside right below the surface filter in the channel stack. */
-extern const grpc_channel_filter grpc_client_census_filter;
-extern const grpc_channel_filter grpc_server_census_filter;
-
-#endif  /* GRPC_INTERNAL_CORE_CHANNEL_CENSUS_FILTER_H */