1 //
2 //
3 // Copyright 2020 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 
19 #ifndef GRPC_SRC_CORE_LIB_SECURITY_CERTIFICATE_PROVIDER_CERTIFICATE_PROVIDER_REGISTRY_H
20 #define GRPC_SRC_CORE_LIB_SECURITY_CERTIFICATE_PROVIDER_CERTIFICATE_PROVIDER_REGISTRY_H
21 
22 #include <grpc/support/port_platform.h>
23 
24 #include <map>
25 #include <memory>
26 #include <utility>
27 
28 #include "absl/strings/string_view.h"
29 
30 #include "src/core/lib/security/certificate_provider/certificate_provider_factory.h"
31 
32 namespace grpc_core {
33 
34 // Global registry for all the certificate provider plugins.
35 class CertificateProviderRegistry {
36  private:
37   using FactoryMap =
38       std::map<absl::string_view, std::unique_ptr<CertificateProviderFactory>>;
39 
40  public:
41   class Builder {
42    public:
43     // Register a provider with the registry. The key of the factory is
44     // extracted from factory parameter with method
45     // CertificateProviderFactory::name. The registry with a given name
46     // cannot be registered twice.
47     void RegisterCertificateProviderFactory(
48         std::unique_ptr<CertificateProviderFactory> factory);
49 
50     CertificateProviderRegistry Build();
51 
52    private:
53     FactoryMap factories_;
54   };
55 
56   CertificateProviderRegistry(const CertificateProviderRegistry&) = delete;
57   CertificateProviderRegistry& operator=(const CertificateProviderRegistry&) =
58       delete;
59   CertificateProviderRegistry(CertificateProviderRegistry&&) = default;
60   CertificateProviderRegistry& operator=(CertificateProviderRegistry&&) =
61       default;
62 
63   // Returns the factory for the plugin keyed by name.
64   CertificateProviderFactory* LookupCertificateProviderFactory(
65       absl::string_view name) const;
66 
67  private:
CertificateProviderRegistry(FactoryMap factories)68   explicit CertificateProviderRegistry(FactoryMap factories)
69       : factories_(std::move(factories)) {}
70 
71   FactoryMap factories_;
72 };
73 
74 }  // namespace grpc_core
75 
76 #endif  // GRPC_SRC_CORE_LIB_SECURITY_CERTIFICATE_PROVIDER_CERTIFICATE_PROVIDER_REGISTRY_H
77