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 <grpc/support/port_platform.h>
19
20 #include "src/core/lib/iomgr/resolve_address.h"
21
22 #include "absl/strings/str_cat.h"
23
24 #include <grpc/event_engine/event_engine.h>
25 #include <grpc/support/alloc.h>
26 #include <grpc/support/log.h>
27
28 #include "src/core/lib/gprpp/crash.h"
29 #include "src/core/lib/gprpp/no_destruct.h"
30
31 namespace grpc_core {
32 const char* kDefaultSecurePort = "https";
33
34 namespace {
35 NoDestruct<std::shared_ptr<DNSResolver>> g_dns_resolver;
36 }
37
38 const DNSResolver::LookupTaskHandle DNSResolver::LookupTaskHandle::kInvalid = {
39 -1, -1};
40 const DNSResolver::TaskHandle DNSResolver::kNullHandle = {0, 0};
41
ResetDNSResolver(std::shared_ptr<DNSResolver> resolver)42 void ResetDNSResolver(std::shared_ptr<DNSResolver> resolver) {
43 *g_dns_resolver = std::move(resolver);
44 }
45
GetDNSResolver()46 std::shared_ptr<DNSResolver> GetDNSResolver() { return *g_dns_resolver; }
47
operator ==(const DNSResolver::LookupTaskHandle & lhs,const DNSResolver::LookupTaskHandle & rhs)48 bool operator==(const DNSResolver::LookupTaskHandle& lhs,
49 const DNSResolver::LookupTaskHandle& rhs) {
50 return lhs.keys[0] == rhs.keys[0] && lhs.keys[1] == rhs.keys[1];
51 }
52
operator !=(const DNSResolver::LookupTaskHandle & lhs,const DNSResolver::LookupTaskHandle & rhs)53 bool operator!=(const DNSResolver::LookupTaskHandle& lhs,
54 const DNSResolver::LookupTaskHandle& rhs) {
55 return !(lhs == rhs);
56 }
57
HandleToString(TaskHandle handle)58 std::string DNSResolver::HandleToString(TaskHandle handle) {
59 return absl::StrCat("{", handle.keys[0], ",", handle.keys[1], "}");
60 }
61
62 } // namespace grpc_core
63