mirror of https://github.com/grpc/grpc.git
Merge pull request #7024 from markdroth/filter_call_init_failure
Extend filter API to allow call initialization to return an error.pull/5803/head^2
kpayson64
8 years ago
committed by
GitHub
commit
212a03ea1d
31 changed files with 1079 additions and 83 deletions
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/*
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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/end2end/end2end_tests.h" |
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#include <limits.h> |
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#include <stdbool.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <grpc/byte_buffer.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/time.h> |
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#include <grpc/support/useful.h> |
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#include "src/core/lib/channel/channel_stack_builder.h" |
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#include "src/core/lib/surface/channel_init.h" |
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#include "test/core/end2end/cq_verifier.h" |
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enum { TIMEOUT = 200000 }; |
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static bool g_enable_filter = false; |
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static void *tag(intptr_t t) { return (void *)t; } |
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static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config, |
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const char *test_name, |
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grpc_channel_args *client_args, |
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grpc_channel_args *server_args) { |
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grpc_end2end_test_fixture f; |
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gpr_log(GPR_INFO, "%s/%s", test_name, config.name); |
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f = config.create_fixture(client_args, server_args); |
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config.init_server(&f, server_args); |
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config.init_client(&f, client_args); |
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return f; |
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} |
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static gpr_timespec n_seconds_time(int n) { |
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return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n); |
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} |
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static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); } |
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static void drain_cq(grpc_completion_queue *cq) { |
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grpc_event ev; |
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do { |
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ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL); |
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} while (ev.type != GRPC_QUEUE_SHUTDOWN); |
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} |
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static void shutdown_server(grpc_end2end_test_fixture *f) { |
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if (!f->server) return; |
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grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000)); |
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GPR_ASSERT(grpc_completion_queue_pluck( |
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f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL) |
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.type == GRPC_OP_COMPLETE); |
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grpc_server_destroy(f->server); |
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f->server = NULL; |
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} |
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static void shutdown_client(grpc_end2end_test_fixture *f) { |
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if (!f->client) return; |
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grpc_channel_destroy(f->client); |
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f->client = NULL; |
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} |
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static void end_test(grpc_end2end_test_fixture *f) { |
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shutdown_server(f); |
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shutdown_client(f); |
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grpc_completion_queue_shutdown(f->cq); |
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drain_cq(f->cq); |
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grpc_completion_queue_destroy(f->cq); |
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} |
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// Simple request via a server filter that always fails to initialize
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// the call.
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static void test_request(grpc_end2end_test_config config) { |
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grpc_call *c; |
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grpc_call *s; |
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gpr_slice request_payload_slice = gpr_slice_from_copied_string("hello world"); |
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grpc_byte_buffer *request_payload = |
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grpc_raw_byte_buffer_create(&request_payload_slice, 1); |
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gpr_timespec deadline = five_seconds_time(); |
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grpc_end2end_test_fixture f = |
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begin_test(config, "filter_call_init_fails", NULL, NULL); |
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cq_verifier *cqv = cq_verifier_create(f.cq); |
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grpc_op ops[6]; |
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grpc_op *op; |
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grpc_metadata_array initial_metadata_recv; |
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grpc_metadata_array trailing_metadata_recv; |
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grpc_metadata_array request_metadata_recv; |
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grpc_byte_buffer *request_payload_recv = NULL; |
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grpc_call_details call_details; |
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grpc_status_code status; |
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grpc_call_error error; |
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char *details = NULL; |
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size_t details_capacity = 0; |
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c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, |
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"/foo", "foo.test.google.fr", deadline, NULL); |
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GPR_ASSERT(c); |
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grpc_metadata_array_init(&initial_metadata_recv); |
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grpc_metadata_array_init(&trailing_metadata_recv); |
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grpc_metadata_array_init(&request_metadata_recv); |
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grpc_call_details_init(&call_details); |
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memset(ops, 0, sizeof(ops)); |
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op = ops; |
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op->op = GRPC_OP_SEND_INITIAL_METADATA; |
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op->data.send_initial_metadata.count = 0; |
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op->data.send_initial_metadata.metadata = NULL; |
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op->flags = 0; |
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op->reserved = NULL; |
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op++; |
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op->op = GRPC_OP_SEND_MESSAGE; |
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op->data.send_message = request_payload; |
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op->flags = 0; |
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op->reserved = NULL; |
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op++; |
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op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT; |
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op->flags = 0; |
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op->reserved = NULL; |
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op++; |
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op->op = GRPC_OP_RECV_INITIAL_METADATA; |
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op->data.recv_initial_metadata = &initial_metadata_recv; |
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op->flags = 0; |
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op->reserved = NULL; |
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op++; |
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op->op = GRPC_OP_RECV_STATUS_ON_CLIENT; |
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op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv; |
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op->data.recv_status_on_client.status = &status; |
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op->data.recv_status_on_client.status_details = &details; |
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op->data.recv_status_on_client.status_details_capacity = &details_capacity; |
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op->flags = 0; |
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op->reserved = NULL; |
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op++; |
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error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL); |
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GPR_ASSERT(GRPC_CALL_OK == error); |
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error = |
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grpc_server_request_call(f.server, &s, &call_details, |
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&request_metadata_recv, f.cq, f.cq, tag(101)); |
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GPR_ASSERT(GRPC_CALL_OK == error); |
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cq_expect_completion(cqv, tag(1), 1); |
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cq_verify(cqv); |
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GPR_ASSERT(status == GRPC_STATUS_PERMISSION_DENIED); |
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GPR_ASSERT(0 == strcmp(details, "access denied")); |
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gpr_free(details); |
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grpc_metadata_array_destroy(&initial_metadata_recv); |
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grpc_metadata_array_destroy(&trailing_metadata_recv); |
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grpc_metadata_array_destroy(&request_metadata_recv); |
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grpc_call_details_destroy(&call_details); |
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grpc_call_destroy(c); |
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cq_verifier_destroy(cqv); |
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grpc_byte_buffer_destroy(request_payload); |
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grpc_byte_buffer_destroy(request_payload_recv); |
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end_test(&f); |
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config.tear_down_data(&f); |
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} |
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/*******************************************************************************
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* Test filter - always fails to initialize a call |
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*/ |
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static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx, |
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grpc_call_element *elem, |
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grpc_call_element_args *args) { |
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return grpc_error_set_int(GRPC_ERROR_CREATE("access denied"), |
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GRPC_ERROR_INT_GRPC_STATUS, |
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GRPC_STATUS_PERMISSION_DENIED); |
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} |
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static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
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const grpc_call_final_info *final_info, |
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void *and_free_memory) {} |
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static void init_channel_elem(grpc_exec_ctx *exec_ctx, |
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grpc_channel_element *elem, |
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grpc_channel_element_args *args) {} |
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static void destroy_channel_elem(grpc_exec_ctx *exec_ctx, |
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grpc_channel_element *elem) {} |
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static const grpc_channel_filter test_filter = { |
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grpc_call_next_op, |
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grpc_channel_next_op, |
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0, |
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init_call_elem, |
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grpc_call_stack_ignore_set_pollset_or_pollset_set, |
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destroy_call_elem, |
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0, |
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init_channel_elem, |
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destroy_channel_elem, |
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grpc_call_next_get_peer, |
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"filter_call_init_fails"}; |
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/*******************************************************************************
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* Registration |
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*/ |
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static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) { |
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if (g_enable_filter) { |
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// Want to add the filter as close to the end as possible, to make
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// sure that all of the filters work well together. However, we
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// can't add it at the very end, because the connected channel filter
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// must be the last one. So we add it right before the last one.
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grpc_channel_stack_builder_iterator *it = |
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grpc_channel_stack_builder_create_iterator_at_last(builder); |
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GPR_ASSERT(grpc_channel_stack_builder_move_prev(it)); |
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const bool retval = grpc_channel_stack_builder_add_filter_before( |
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it, &test_filter, NULL, NULL); |
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grpc_channel_stack_builder_iterator_destroy(it); |
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return retval; |
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} else { |
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return true; |
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} |
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} |
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static void init_plugin(void) { |
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grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, |
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maybe_add_filter, NULL); |
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} |
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static void destroy_plugin(void) {} |
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void filter_call_init_fails(grpc_end2end_test_config config) { |
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g_enable_filter = true; |
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test_request(config); |
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g_enable_filter = false; |
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} |
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void filter_call_init_fails_pre_init(void) { |
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grpc_register_plugin(init_plugin, destroy_plugin); |
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} |
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