static void channel_op(grpc_channel_element *elem,
grpc_channel_element *from_elem, grpc_channel_op *op) {
channel_data *chand = elem->channel_data;
grpc_server *server = chand->server;
switch (op->type) {
case GRPC_ACCEPT_CALL:
/* create a call */
grpc_call_create(chand->channel, NULL,
op->data.accept_call.transport_server_data, NULL, 0,
gpr_inf_future);
break;
case GRPC_TRANSPORT_CLOSED:
/* if the transport is closed for a server channel, we destroy the
channel */
gpr_mu_lock(&server->mu);
server_ref(server);
destroy_channel(chand);
gpr_mu_unlock(&server->mu);
server_unref(server);
break;
case GRPC_TRANSPORT_GOAWAY:
gpr_slice_unref(op->data.goaway.message);
break;
default:
GPR_ASSERT(op->dir == GRPC_CALL_DOWN);
grpc_channel_next_op(elem, op);
break;
}
}
static void accept_stream(void *cd, grpc_transport *transport,
const void *transport_server_data) {
channel_data *chand = cd;
/* create a call */
grpc_call_create(chand->channel, NULL, 0, NULL, transport_server_data, NULL,
0, gpr_inf_future(GPR_CLOCK_MONOTONIC));
}
static grpc_call *grpc_channel_create_call_internal(
grpc_exec_ctx *exec_ctx, grpc_channel *channel, grpc_call *parent_call,
uint32_t propagation_mask, grpc_completion_queue *cq,
grpc_pollset_set *pollset_set_alternative, grpc_mdelem path_mdelem,
grpc_mdelem authority_mdelem, gpr_timespec deadline) {
grpc_mdelem send_metadata[2];
size_t num_metadata = 0;
GPR_ASSERT(channel->is_client);
GPR_ASSERT(!(cq != NULL && pollset_set_alternative != NULL));
send_metadata[num_metadata++] = path_mdelem;
if (!GRPC_MDISNULL(authority_mdelem)) {
send_metadata[num_metadata++] = authority_mdelem;
} else if (!GRPC_MDISNULL(channel->default_authority)) {
send_metadata[num_metadata++] = GRPC_MDELEM_REF(channel->default_authority);
}
grpc_call_create_args args;
memset(&args, 0, sizeof(args));
args.channel = channel;
args.parent_call = parent_call;
args.propagation_mask = propagation_mask;
args.cq = cq;
args.pollset_set_alternative = pollset_set_alternative;
args.server_transport_data = NULL;
args.add_initial_metadata = send_metadata;
args.add_initial_metadata_count = num_metadata;
args.send_deadline = deadline;
grpc_call *call;
GRPC_LOG_IF_ERROR("call_create", grpc_call_create(exec_ctx, &args, &call));
return call;
}
static grpc_call *grpc_channel_create_call_internal(
grpc_channel *channel, grpc_completion_queue *cq, grpc_mdelem *path_mdelem,
grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
grpc_mdelem *send_metadata[2];
GPR_ASSERT(channel->is_client);
send_metadata[0] = path_mdelem;
send_metadata[1] = authority_mdelem;
return grpc_call_create(channel, cq, NULL, send_metadata,
GPR_ARRAY_SIZE(send_metadata), deadline);
}
static grpc_call *grpc_channel_create_call_internal(
grpc_channel *channel, grpc_completion_queue *cq, grpc_mdelem *path_mdelem,
grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
grpc_mdelem *send_metadata[2];
int num_metadata = 0;
GPR_ASSERT(channel->is_client);
send_metadata[num_metadata++] = path_mdelem;
if (authority_mdelem != NULL) {
send_metadata[num_metadata++] = authority_mdelem;
}
return grpc_call_create(channel, cq, NULL, send_metadata,
num_metadata, deadline);
}
static grpc_call *grpc_channel_create_call_internal(
grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
grpc_completion_queue *cq, grpc_mdelem *path_mdelem,
grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
grpc_mdelem *send_metadata[2];
size_t num_metadata = 0;
GPR_ASSERT(channel->is_client);
send_metadata[num_metadata++] = path_mdelem;
if (authority_mdelem != NULL) {
send_metadata[num_metadata++] = authority_mdelem;
} else if (channel->default_authority != NULL) {
send_metadata[num_metadata++] = GRPC_MDELEM_REF(channel->default_authority);
}
return grpc_call_create(channel, parent_call, propagation_mask, cq, NULL,
send_metadata, num_metadata, deadline);
}
static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd,
grpc_transport *transport,
const void *transport_server_data) {
channel_data *chand = cd;
/* create a call */
grpc_call *call = grpc_call_create(chand->channel, NULL, 0, NULL, NULL,
transport_server_data, NULL, 0,
gpr_inf_future(GPR_CLOCK_MONOTONIC));
grpc_call_element *elem =
grpc_call_stack_element(grpc_call_get_call_stack(call), 0);
call_data *calld = elem->call_data;
grpc_op op;
memset(&op, 0, sizeof(op));
op.op = GRPC_OP_RECV_INITIAL_METADATA;
op.data.recv_initial_metadata = &calld->initial_metadata;
grpc_closure_init(&calld->got_initial_metadata, got_initial_metadata, elem);
grpc_call_start_batch_and_execute(exec_ctx, call, &op, 1,
&calld->got_initial_metadata);
}
static grpc_call *grpc_channel_create_call_internal(
grpc_channel *channel, grpc_completion_queue *cq, grpc_mdelem *path_mdelem,
grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
grpc_call *call;
grpc_call_op op;
if (!channel->is_client) {
gpr_log(GPR_ERROR, "Cannot create a call on the server.");
return NULL;
}
call = grpc_call_create(channel, cq, NULL);
/* Add :path and :authority headers. */
op.type = GRPC_SEND_METADATA;
op.dir = GRPC_CALL_DOWN;
op.flags = 0;
op.data.metadata = path_mdelem;
op.done_cb = do_nothing;
op.user_data = NULL;
grpc_call_execute_op(call, &op);
op.data.metadata = authority_mdelem;
grpc_call_execute_op(call, &op);
if (0 != gpr_time_cmp(deadline, gpr_inf_future)) {
op.type = GRPC_SEND_DEADLINE;
op.dir = GRPC_CALL_DOWN;
op.flags = 0;
op.data.deadline = deadline;
op.done_cb = do_nothing;
op.user_data = NULL;
grpc_call_execute_op(call, &op);
}
return call;
}
