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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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165 lines
5.4 KiB
165 lines
5.4 KiB
/* |
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* |
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* Copyright 2016, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include "test/core/util/passthru_endpoint.h" |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/string_util.h> |
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typedef struct passthru_endpoint passthru_endpoint; |
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typedef struct { |
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grpc_endpoint base; |
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passthru_endpoint *parent; |
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gpr_slice_buffer read_buffer; |
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gpr_slice_buffer *on_read_out; |
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grpc_closure *on_read; |
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} half; |
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struct passthru_endpoint { |
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gpr_mu mu; |
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int halves; |
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bool shutdown; |
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half client; |
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half server; |
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}; |
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static void me_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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gpr_slice_buffer *slices, grpc_closure *cb) { |
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half *m = (half *)ep; |
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gpr_mu_lock(&m->parent->mu); |
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if (m->parent->shutdown) { |
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grpc_exec_ctx_push(exec_ctx, cb, GRPC_ERROR_CREATE("Already shutdown"), |
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NULL); |
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} else if (m->read_buffer.count > 0) { |
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gpr_slice_buffer_swap(&m->read_buffer, slices); |
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grpc_exec_ctx_push(exec_ctx, cb, GRPC_ERROR_NONE, NULL); |
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} else { |
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m->on_read = cb; |
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m->on_read_out = slices; |
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} |
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gpr_mu_unlock(&m->parent->mu); |
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} |
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static half *other_half(half *h) { |
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if (h == &h->parent->client) return &h->parent->server; |
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return &h->parent->client; |
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} |
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static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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gpr_slice_buffer *slices, grpc_closure *cb) { |
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half *m = other_half((half *)ep); |
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gpr_mu_lock(&m->parent->mu); |
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grpc_error *error = GRPC_ERROR_NONE; |
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if (m->parent->shutdown) { |
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error = GRPC_ERROR_CREATE("Endpoint already shutdown"); |
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} else if (m->on_read != NULL) { |
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for (size_t i = 0; i < slices->count; i++) { |
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gpr_slice_buffer_add(m->on_read_out, gpr_slice_ref(slices->slices[i])); |
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} |
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grpc_exec_ctx_push(exec_ctx, m->on_read, GRPC_ERROR_NONE, NULL); |
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m->on_read = NULL; |
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} else { |
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for (size_t i = 0; i < slices->count; i++) { |
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gpr_slice_buffer_add(&m->read_buffer, gpr_slice_ref(slices->slices[i])); |
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} |
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} |
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gpr_mu_unlock(&m->parent->mu); |
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grpc_exec_ctx_push(exec_ctx, cb, error, NULL); |
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} |
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static void me_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_pollset *pollset) {} |
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static void me_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_pollset_set *pollset) {} |
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static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
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half *m = (half *)ep; |
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gpr_mu_lock(&m->parent->mu); |
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m->parent->shutdown = true; |
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if (m->on_read) { |
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grpc_exec_ctx_push(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"), |
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NULL); |
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m->on_read = NULL; |
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} |
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m = other_half(m); |
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if (m->on_read) { |
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grpc_exec_ctx_push(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"), |
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NULL); |
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m->on_read = NULL; |
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} |
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gpr_mu_unlock(&m->parent->mu); |
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} |
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static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
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passthru_endpoint *p = ((half *)ep)->parent; |
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gpr_mu_lock(&p->mu); |
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if (0 == --p->halves) { |
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gpr_mu_unlock(&p->mu); |
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gpr_mu_destroy(&p->mu); |
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gpr_slice_buffer_destroy(&p->client.read_buffer); |
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gpr_slice_buffer_destroy(&p->server.read_buffer); |
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gpr_free(p); |
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} else { |
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gpr_mu_unlock(&p->mu); |
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} |
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} |
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static char *me_get_peer(grpc_endpoint *ep) { |
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return gpr_strdup("fake:mock_endpoint"); |
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} |
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static const grpc_endpoint_vtable vtable = { |
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me_read, me_write, me_add_to_pollset, me_add_to_pollset_set, |
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me_shutdown, me_destroy, me_get_peer, |
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}; |
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static void half_init(half *m, passthru_endpoint *parent) { |
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m->base.vtable = &vtable; |
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m->parent = parent; |
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gpr_slice_buffer_init(&m->read_buffer); |
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m->on_read = NULL; |
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} |
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void grpc_passthru_endpoint_create(grpc_endpoint **client, |
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grpc_endpoint **server) { |
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passthru_endpoint *m = gpr_malloc(sizeof(*m)); |
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m->halves = 2; |
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m->shutdown = 0; |
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half_init(&m->client, m); |
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half_init(&m->server, m); |
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gpr_mu_init(&m->mu); |
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*client = &m->client.base; |
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*server = &m->server.base; |
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}
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