aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/core/lib/surface/channel_connectivity.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/lib/surface/channel_connectivity.c')
-rw-r--r--src/core/lib/surface/channel_connectivity.c207
1 files changed, 0 insertions, 207 deletions
diff --git a/src/core/lib/surface/channel_connectivity.c b/src/core/lib/surface/channel_connectivity.c
deleted file mode 100644
index 9a9ee422c2..0000000000
--- a/src/core/lib/surface/channel_connectivity.c
+++ /dev/null
@@ -1,207 +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/lib/surface/channel.h"
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-
-#include "src/core/lib/channel/client_channel.h"
-#include "src/core/lib/iomgr/timer.h"
-#include "src/core/lib/surface/api_trace.h"
-#include "src/core/lib/surface/completion_queue.h"
-
-grpc_connectivity_state grpc_channel_check_connectivity_state(
- grpc_channel *channel, int try_to_connect) {
- /* forward through to the underlying client channel */
- grpc_channel_element *client_channel_elem =
- grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
- grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
- grpc_connectivity_state state;
- GRPC_API_TRACE(
- "grpc_channel_check_connectivity_state(channel=%p, try_to_connect=%d)", 2,
- (channel, try_to_connect));
- if (client_channel_elem->filter == &grpc_client_channel_filter) {
- state = grpc_client_channel_check_connectivity_state(
- &exec_ctx, client_channel_elem, try_to_connect);
- grpc_exec_ctx_finish(&exec_ctx);
- return state;
- }
- gpr_log(GPR_ERROR,
- "grpc_channel_check_connectivity_state called on something that is "
- "not a (u)client channel, but '%s'",
- client_channel_elem->filter->name);
- grpc_exec_ctx_finish(&exec_ctx);
- return GRPC_CHANNEL_FATAL_FAILURE;
-}
-
-typedef enum {
- WAITING,
- CALLING_BACK,
- CALLING_BACK_AND_FINISHED,
- CALLED_BACK
-} callback_phase;
-
-typedef struct {
- gpr_mu mu;
- callback_phase phase;
- int success;
- grpc_closure on_complete;
- grpc_timer alarm;
- grpc_connectivity_state state;
- grpc_completion_queue *cq;
- grpc_cq_completion completion_storage;
- grpc_channel *channel;
- void *tag;
-} state_watcher;
-
-static void delete_state_watcher(grpc_exec_ctx *exec_ctx, state_watcher *w) {
- grpc_channel_element *client_channel_elem = grpc_channel_stack_last_element(
- grpc_channel_get_channel_stack(w->channel));
- if (client_channel_elem->filter == &grpc_client_channel_filter) {
- GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, w->channel,
- "watch_channel_connectivity");
- } else {
- abort();
- }
- gpr_mu_destroy(&w->mu);
- gpr_free(w);
-}
-
-static void finished_completion(grpc_exec_ctx *exec_ctx, void *pw,
- grpc_cq_completion *ignored) {
- int delete = 0;
- state_watcher *w = pw;
- gpr_mu_lock(&w->mu);
- switch (w->phase) {
- case WAITING:
- case CALLED_BACK:
- GPR_UNREACHABLE_CODE(return );
- case CALLING_BACK:
- w->phase = CALLED_BACK;
- break;
- case CALLING_BACK_AND_FINISHED:
- delete = 1;
- break;
- }
- gpr_mu_unlock(&w->mu);
-
- if (delete) {
- delete_state_watcher(exec_ctx, w);
- }
-}
-
-static void partly_done(grpc_exec_ctx *exec_ctx, state_watcher *w,
- int due_to_completion) {
- int delete = 0;
-
- if (due_to_completion) {
- grpc_timer_cancel(exec_ctx, &w->alarm);
- }
-
- gpr_mu_lock(&w->mu);
- if (due_to_completion) {
- w->success = 1;
- }
- switch (w->phase) {
- case WAITING:
- w->phase = CALLING_BACK;
- grpc_cq_end_op(exec_ctx, w->cq, w->tag, w->success, finished_completion,
- w, &w->completion_storage);
- break;
- case CALLING_BACK:
- w->phase = CALLING_BACK_AND_FINISHED;
- break;
- case CALLING_BACK_AND_FINISHED:
- GPR_UNREACHABLE_CODE(return );
- case CALLED_BACK:
- delete = 1;
- break;
- }
- gpr_mu_unlock(&w->mu);
-
- if (delete) {
- delete_state_watcher(exec_ctx, w);
- }
-}
-
-static void watch_complete(grpc_exec_ctx *exec_ctx, void *pw, bool success) {
- partly_done(exec_ctx, pw, 1);
-}
-
-static void timeout_complete(grpc_exec_ctx *exec_ctx, void *pw, bool success) {
- partly_done(exec_ctx, pw, 0);
-}
-
-void grpc_channel_watch_connectivity_state(
- grpc_channel *channel, grpc_connectivity_state last_observed_state,
- gpr_timespec deadline, grpc_completion_queue *cq, void *tag) {
- grpc_channel_element *client_channel_elem =
- grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
- grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
- state_watcher *w = gpr_malloc(sizeof(*w));
-
- GRPC_API_TRACE(
- "grpc_channel_watch_connectivity_state("
- "channel=%p, last_observed_state=%d, "
- "deadline=gpr_timespec { tv_sec: %lld, tv_nsec: %d, clock_type: %d }, "
- "cq=%p, tag=%p)",
- 7, (channel, (int)last_observed_state, (long long)deadline.tv_sec,
- (int)deadline.tv_nsec, (int)deadline.clock_type, cq, tag));
-
- grpc_cq_begin_op(cq, tag);
-
- gpr_mu_init(&w->mu);
- grpc_closure_init(&w->on_complete, watch_complete, w);
- w->phase = WAITING;
- w->state = last_observed_state;
- w->success = 0;
- w->cq = cq;
- w->tag = tag;
- w->channel = channel;
-
- grpc_timer_init(&exec_ctx, &w->alarm,
- gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
- timeout_complete, w, gpr_now(GPR_CLOCK_MONOTONIC));
-
- if (client_channel_elem->filter == &grpc_client_channel_filter) {
- GRPC_CHANNEL_INTERNAL_REF(channel, "watch_channel_connectivity");
- grpc_client_channel_watch_connectivity_state(&exec_ctx, client_channel_elem,
- grpc_cq_pollset(cq), &w->state,
- &w->on_complete);
- } else {
- abort();
- }
-
- grpc_exec_ctx_finish(&exec_ctx);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-15 14:25:51 +0000