1 //
2 //
3 // Copyright 2018 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 //
18 #include "src/core/lib/iomgr/resolve_address.h"
19
20 #include <grpc/event_engine/event_engine.h>
21 #include <grpc/support/alloc.h>
22 #include <grpc/support/port_platform.h>
23
24 #include "absl/strings/str_cat.h"
25 #include "src/core/util/crash.h"
26 #include "src/core/util/no_destruct.h"
27
28 namespace grpc_core {
29 const char* kDefaultSecurePort = "https";
30
31 namespace {
32 NoDestruct<std::shared_ptr<DNSResolver>> g_dns_resolver;
33 }
34
35 const DNSResolver::LookupTaskHandle DNSResolver::LookupTaskHandle::kInvalid = {
36 -1, -1};
37 const DNSResolver::TaskHandle DNSResolver::kNullHandle = {0, 0};
38
ResetDNSResolver(std::shared_ptr<DNSResolver> resolver)39 void ResetDNSResolver(std::shared_ptr<DNSResolver> resolver) {
40 *g_dns_resolver = std::move(resolver);
41 }
42
GetDNSResolver()43 std::shared_ptr<DNSResolver> GetDNSResolver() { return *g_dns_resolver; }
44
operator ==(const DNSResolver::LookupTaskHandle & lhs,const DNSResolver::LookupTaskHandle & rhs)45 bool operator==(const DNSResolver::LookupTaskHandle& lhs,
46 const DNSResolver::LookupTaskHandle& rhs) {
47 return lhs.keys[0] == rhs.keys[0] && lhs.keys[1] == rhs.keys[1];
48 }
49
operator !=(const DNSResolver::LookupTaskHandle & lhs,const DNSResolver::LookupTaskHandle & rhs)50 bool operator!=(const DNSResolver::LookupTaskHandle& lhs,
51 const DNSResolver::LookupTaskHandle& rhs) {
52 return !(lhs == rhs);
53 }
54
HandleToString(TaskHandle handle)55 std::string DNSResolver::HandleToString(TaskHandle handle) {
56 return absl::StrCat("{", handle.keys[0], ",", handle.keys[1], "}");
57 }
58
59 } // namespace grpc_core
60