1 // Copyright 2022 gRPC authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 #include "src/core/lib/event_engine/utils.h"
15
16 #include <grpc/event_engine/event_engine.h>
17 #include <grpc/support/port_platform.h>
18 #include <stdint.h>
19
20 #include <algorithm>
21
22 #include "absl/strings/str_cat.h"
23 #include "src/core/util/notification.h"
24 #include "src/core/util/time.h"
25
26 namespace grpc_event_engine {
27 namespace experimental {
28
HandleToStringInternal(uintptr_t a,uintptr_t b)29 std::string HandleToStringInternal(uintptr_t a, uintptr_t b) {
30 return absl::StrCat("{", absl::Hex(a, absl::kZeroPad16), ",",
31 absl::Hex(b, absl::kZeroPad16), "}");
32 }
33
ToTimestamp(grpc_core::Timestamp now,EventEngine::Duration delta)34 grpc_core::Timestamp ToTimestamp(grpc_core::Timestamp now,
35 EventEngine::Duration delta) {
36 return now +
37 std::max(grpc_core::Duration::Milliseconds(1),
38 grpc_core::Duration::NanosecondsRoundUp(delta.count())) +
39 grpc_core::Duration::Milliseconds(1);
40 }
41
42 absl::StatusOr<std::vector<EventEngine::ResolvedAddress>>
LookupHostnameBlocking(EventEngine::DNSResolver * dns_resolver,absl::string_view name,absl::string_view default_port)43 LookupHostnameBlocking(EventEngine::DNSResolver* dns_resolver,
44 absl::string_view name, absl::string_view default_port) {
45 absl::StatusOr<std::vector<EventEngine::ResolvedAddress>> results;
46 grpc_core::Notification done;
47 dns_resolver->LookupHostname(
48 [&](absl::StatusOr<std::vector<EventEngine::ResolvedAddress>> addresses) {
49 results = std::move(addresses);
50 done.Notify();
51 },
52 name, default_port);
53 done.WaitForNotification();
54 return results;
55 }
56
57 } // namespace experimental
58 } // namespace grpc_event_engine
59