Initial checkin of gRPC to third_party/

third_party/grpc/test/core/end2end/fixtures/h2_uchannel.c

Index: third_party/grpc/test/core/end2end/fixtures/h2_uchannel.c
diff --git a/third_party/grpc/test/core/end2end/fixtures/h2_uchannel.c b/third_party/grpc/test/core/end2end/fixtures/h2_uchannel.c
new file mode 100644
index 0000000000000000000000000000000000000000..87bbd64d09a937b66ab8637647e4b1445a2f16a8
--- /dev/null
+++ b/third_party/grpc/test/core/end2end/fixtures/h2_uchannel.c
@@ -0,0 +1,358 @@
+/*
+ *
+ * Copyright 2015-2016, 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 "test/core/end2end/end2end_tests.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/useful.h>
+#include "src/core/channel/channel_args.h"
+#include "src/core/channel/client_channel.h"
+#include "src/core/channel/client_uchannel.h"
+#include "src/core/channel/connected_channel.h"
+#include "src/core/channel/http_client_filter.h"
+#include "src/core/channel/http_server_filter.h"
+#include "src/core/client_config/resolver_registry.h"
+#include "src/core/iomgr/tcp_client.h"
+#include "src/core/surface/channel.h"
+#include "src/core/surface/server.h"
+#include "src/core/transport/chttp2_transport.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+typedef struct {
+  grpc_connector base;
+  gpr_refcount refs;
+
+  grpc_closure *notify;
+  grpc_connect_in_args args;
+  grpc_connect_out_args *result;
+
+  grpc_endpoint *tcp;
+
+  grpc_closure connected;
+} connector;
+
+static void connector_ref(grpc_connector *con) {
+  connector *c = (connector *)con;
+  gpr_ref(&c->refs);
+}
+
+static void connector_unref(grpc_exec_ctx *exec_ctx, grpc_connector *con) {
+  connector *c = (connector *)con;
+  if (gpr_unref(&c->refs)) {
+    gpr_free(c);
+  }
+}
+
+static void connected(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
+  connector *c = arg;
+  grpc_closure *notify;
+  grpc_endpoint *tcp = c->tcp;
+  if (tcp != NULL) {
+    c->result->transport =
+        grpc_create_chttp2_transport(exec_ctx, c->args.channel_args, tcp, 1);
+    grpc_chttp2_transport_start_reading(exec_ctx, c->result->transport, NULL,
+                                        0);
+    GPR_ASSERT(c->result->transport);
+    c->result->filters = gpr_malloc(sizeof(grpc_channel_filter *));
+    c->result->filters[0] = &grpc_http_client_filter;
+    c->result->num_filters = 1;
+  } else {
+    memset(c->result, 0, sizeof(*c->result));
+  }
+  notify = c->notify;
+  c->notify = NULL;
+  notify->cb(exec_ctx, notify->cb_arg, 1);
+}
+
+static void connector_shutdown(grpc_exec_ctx *exec_ctx, grpc_connector *con) {}
+
+static void connector_connect(grpc_exec_ctx *exec_ctx, grpc_connector *con,
+                              const grpc_connect_in_args *args,
+                              grpc_connect_out_args *result,
+                              grpc_closure *notify) {
+  connector *c = (connector *)con;
+  GPR_ASSERT(c->notify == NULL);
+  GPR_ASSERT(notify->cb);
+  c->notify = notify;
+  c->args = *args;
+  c->result = result;
+  c->tcp = NULL;
+  grpc_closure_init(&c->connected, connected, c);
+  grpc_tcp_client_connect(exec_ctx, &c->connected, &c->tcp,
+                          args->interested_parties, args->addr, args->addr_len,
+                          args->deadline);
+}
+
+static const grpc_connector_vtable connector_vtable = {
+    connector_ref, connector_unref, connector_shutdown, connector_connect};
+
+typedef struct {
+  grpc_subchannel_factory base;
+  gpr_refcount refs;
+  grpc_channel_args *merge_args;
+  grpc_channel *master;
+  grpc_subchannel **sniffed_subchannel;
+} subchannel_factory;
+
+static void subchannel_factory_ref(grpc_subchannel_factory *scf) {
+  subchannel_factory *f = (subchannel_factory *)scf;
+  gpr_ref(&f->refs);
+}
+
+static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
+                                     grpc_subchannel_factory *scf) {
+  subchannel_factory *f = (subchannel_factory *)scf;
+  if (gpr_unref(&f->refs)) {
+    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master, "subchannel_factory");
+    grpc_channel_args_destroy(f->merge_args);
+    gpr_free(f);
+  }
+}
+
+static grpc_subchannel *subchannel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *scf,
+    grpc_subchannel_args *args) {
+  subchannel_factory *f = (subchannel_factory *)scf;
+  connector *c = gpr_malloc(sizeof(*c));
+  grpc_channel_args *final_args =
+      grpc_channel_args_merge(args->args, f->merge_args);
+  grpc_subchannel *s;
+  memset(c, 0, sizeof(*c));
+  c->base.vtable = &connector_vtable;
+  gpr_ref_init(&c->refs, 1);
+  args->args = final_args;
+  s = grpc_subchannel_create(exec_ctx, &c->base, args);
+  grpc_connector_unref(exec_ctx, &c->base);
+  grpc_channel_args_destroy(final_args);
+  if (*f->sniffed_subchannel) {
+    GRPC_SUBCHANNEL_UNREF(exec_ctx, *f->sniffed_subchannel, "sniffed");
+  }
+  *f->sniffed_subchannel = s;
+  GRPC_SUBCHANNEL_REF(s, "sniffed");
+  return s;
+}
+
+static const grpc_subchannel_factory_vtable test_subchannel_factory_vtable = {
+    subchannel_factory_ref, subchannel_factory_unref,
+    subchannel_factory_create_subchannel};
+
+/* The evil twin of grpc_insecure_channel_create. It allows the test to use the
+ * custom-built sniffing subchannel_factory */
+grpc_channel *channel_create(const char *target, const grpc_channel_args *args,
+                             grpc_subchannel **sniffed_subchannel) {
+  grpc_channel *channel = NULL;
+#define MAX_FILTERS 1
+  const grpc_channel_filter *filters[MAX_FILTERS];
+  grpc_resolver *resolver;
+  subchannel_factory *f;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  size_t n = 0;
+
+  filters[n++] = &grpc_client_channel_filter;
+  GPR_ASSERT(n <= MAX_FILTERS);
+
+  channel =
+      grpc_channel_create_from_filters(&exec_ctx, target, filters, n, args, 1);
+
+  f = gpr_malloc(sizeof(*f));
+  f->sniffed_subchannel = sniffed_subchannel;
+  f->base.vtable = &test_subchannel_factory_vtable;
+  gpr_ref_init(&f->refs, 1);
+  f->merge_args = grpc_channel_args_copy(args);
+  f->master = channel;
+  GRPC_CHANNEL_INTERNAL_REF(f->master, "test_subchannel_factory");
+  resolver = grpc_resolver_create(target, &f->base);
+  if (!resolver) {
+    return NULL;
+  }
+
+  grpc_client_channel_set_resolver(
+      &exec_ctx, grpc_channel_get_channel_stack(channel), resolver);
+  GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_create");
+  grpc_subchannel_factory_unref(&exec_ctx, &f->base);
+
+  grpc_exec_ctx_finish(&exec_ctx);
+
+  return channel;
+}
+
+typedef struct micro_fullstack_fixture_data {
+  char *localaddr;
+  grpc_channel *master_channel;
+  grpc_subchannel *sniffed_subchannel;
+} micro_fullstack_fixture_data;
+
+static grpc_end2end_test_fixture chttp2_create_fixture_micro_fullstack(
+    grpc_channel_args *client_args, grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  int port = grpc_pick_unused_port_or_die();
+  micro_fullstack_fixture_data *ffd =
+      gpr_malloc(sizeof(micro_fullstack_fixture_data));
+  memset(&f, 0, sizeof(f));
+  memset(ffd, 0, sizeof(*ffd));
+
+  gpr_join_host_port(&ffd->localaddr, "127.0.0.1", port);
+
+  f.fixture_data = ffd;
+  f.cq = grpc_completion_queue_create(NULL);
+
+  return f;
+}
+
+grpc_connectivity_state g_state = GRPC_CHANNEL_IDLE;
+grpc_pollset_set *g_interested_parties;
+
+static void state_changed(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
+  if (g_state != GRPC_CHANNEL_READY) {
+    grpc_subchannel_notify_on_state_change(
+        exec_ctx, arg, g_interested_parties, &g_state,
+        grpc_closure_create(state_changed, arg));
+  }
+}
+
+static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
+  grpc_pollset_destroy(arg);
+}
+
+static grpc_connected_subchannel *connect_subchannel(grpc_subchannel *c) {
+  gpr_mu *mu;
+  grpc_pollset *pollset = gpr_malloc(grpc_pollset_size());
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_pollset_init(pollset, &mu);
+  g_interested_parties = grpc_pollset_set_create();
+  grpc_pollset_set_add_pollset(&exec_ctx, g_interested_parties, pollset);
+  grpc_subchannel_notify_on_state_change(&exec_ctx, c, g_interested_parties,
+                                         &g_state,
+                                         grpc_closure_create(state_changed, c));
+  grpc_exec_ctx_flush(&exec_ctx);
+  gpr_mu_lock(mu);
+  while (g_state != GRPC_CHANNEL_READY) {
+    grpc_pollset_worker *worker = NULL;
+    grpc_pollset_work(&exec_ctx, pollset, &worker, gpr_now(GPR_CLOCK_MONOTONIC),
+                      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1));
+    gpr_mu_unlock(mu);
+    grpc_exec_ctx_flush(&exec_ctx);
+    gpr_mu_lock(mu);
+  }
+  grpc_pollset_shutdown(&exec_ctx, pollset,
+                        grpc_closure_create(destroy_pollset, pollset));
+  grpc_pollset_set_destroy(g_interested_parties);
+  gpr_mu_unlock(mu);
+  grpc_exec_ctx_finish(&exec_ctx);
+  gpr_free(pollset);
+  return grpc_subchannel_get_connected_subchannel(c);
+}
+
+static void chttp2_init_client_micro_fullstack(grpc_end2end_test_fixture *f,
+                                               grpc_channel_args *client_args) {
+  micro_fullstack_fixture_data *ffd = f->fixture_data;
+  grpc_connectivity_state conn_state;
+  grpc_connected_subchannel *connected;
+  char *ipv4_localaddr;
+
+  gpr_asprintf(&ipv4_localaddr, "ipv4:%s", ffd->localaddr);
+  ffd->master_channel =
+      channel_create(ipv4_localaddr, client_args, &ffd->sniffed_subchannel);
+  gpr_free(ipv4_localaddr);
+  gpr_log(GPR_INFO, "MASTER CHANNEL %p ", ffd->master_channel);
+  /* the following will block. That's ok for this test */
+  conn_state = grpc_channel_check_connectivity_state(ffd->master_channel,
+                                                     1 /* try to connect */);
+  GPR_ASSERT(conn_state == GRPC_CHANNEL_IDLE);
+
+  /* here sniffed_subchannel should be ready to use */
+  GPR_ASSERT(conn_state == GRPC_CHANNEL_IDLE);
+  GPR_ASSERT(ffd->sniffed_subchannel != NULL);
+
+  connected = connect_subchannel(ffd->sniffed_subchannel);
+  f->client = grpc_client_uchannel_create(ffd->sniffed_subchannel, client_args);
+  grpc_client_uchannel_set_connected_subchannel(f->client, connected);
+  gpr_log(GPR_INFO, "CHANNEL WRAPPING SUBCHANNEL: %p(%p)", f->client,
+          ffd->sniffed_subchannel);
+
+  GPR_ASSERT(f->client);
+}
+
+static void chttp2_init_server_micro_fullstack(grpc_end2end_test_fixture *f,
+                                               grpc_channel_args *server_args) {
+  micro_fullstack_fixture_data *ffd = f->fixture_data;
+  if (f->server) {
+    grpc_server_destroy(f->server);
+  }
+  f->server = grpc_server_create(server_args, NULL);
+  grpc_server_register_completion_queue(f->server, f->cq, NULL);
+  GPR_ASSERT(grpc_server_add_insecure_http2_port(f->server, ffd->localaddr));
+  grpc_server_start(f->server);
+}
+
+static void chttp2_tear_down_micro_fullstack(grpc_end2end_test_fixture *f) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  micro_fullstack_fixture_data *ffd = f->fixture_data;
+  grpc_channel_destroy(ffd->master_channel);
+  if (ffd->sniffed_subchannel) {
+    GRPC_SUBCHANNEL_UNREF(&exec_ctx, ffd->sniffed_subchannel, "sniffed");
+  }
+  gpr_free(ffd->localaddr);
+  gpr_free(ffd);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+/* All test configurations */
+static grpc_end2end_test_config configs[] = {
+    {"chttp2/micro_fullstack", 0, chttp2_create_fixture_micro_fullstack,
+     chttp2_init_client_micro_fullstack, chttp2_init_server_micro_fullstack,
+     chttp2_tear_down_micro_fullstack},
+};
+
+int main(int argc, char **argv) {
+  size_t i;
+
+  grpc_test_init(argc, argv);
+  grpc_init();
+
+  for (i = 0; i < sizeof(configs) / sizeof(*configs); i++) {
+    grpc_end2end_tests(argc, argv, configs[i]);
+  }
+
+  grpc_shutdown();
+
+  return 0;
+}