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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef SERVICES_SHELL_PUBLIC_CPP_SERVICE_H_ | |
6 #define SERVICES_SHELL_PUBLIC_CPP_SERVICE_H_ | |
7 | |
8 #include <stdint.h> | |
9 #include <string> | |
10 | |
11 #include "base/macros.h" | |
12 #include "services/shell/public/cpp/interface_registry.h" | |
13 | |
14 namespace shell { | |
15 | |
16 class Connector; | |
17 class Identity; | |
18 class InterfaceRegistry; | |
19 class ServiceContext; | |
20 | |
21 // The primary contract between a Service and the Service Manager, receiving | |
22 // lifecycle notifications and connection requests. | |
23 class Service { | |
24 public: | |
25 Service(); | |
26 virtual ~Service(); | |
27 | |
28 // Called once a bidirectional connection with the Service Manager has been | |
29 // established. | |
30 // |identity| is the identity of the service instance. | |
31 // Called exactly once before any calls to OnConnect(). | |
32 virtual void OnStart(const Identity& identity); | |
33 | |
34 // Called when a connection to this service is brokered by the Service | |
35 // Manager. Override to expose interfaces to the remote service. Return true | |
36 // if the connection should succeed. Return false if the connection should | |
37 // be rejected and the underlying pipe closed. The default implementation | |
38 // returns false. | |
39 virtual bool OnConnect(const Identity& remote_identity, | |
40 InterfaceRegistry* registry); | |
41 | |
42 // Called when the Service Manager has stopped tracking this instance. The | |
43 // service should use this as a signal to exit, and in fact its process may | |
44 // be reaped shortly afterward. | |
45 // Return true from this method to tell the ServiceContext to run its | |
46 // connection lost closure if it has one, false to prevent it from being run. | |
47 // The default implementation returns true. | |
48 // When used in conjunction with ApplicationRunner, returning true here quits | |
49 // the message loop created by ApplicationRunner, which results in the service | |
50 // quitting. | |
51 // No calls to either OnStart() nor OnConnect() may be received after this is | |
52 // called. It is however possible for this to be called without OnStart() ever | |
53 // having been called. | |
54 virtual bool OnStop(); | |
55 | |
56 Connector* connector(); | |
57 ServiceContext* context(); | |
58 void set_context(std::unique_ptr<ServiceContext> context); | |
59 | |
60 private: | |
61 std::unique_ptr<ServiceContext> context_; | |
62 | |
63 DISALLOW_COPY_AND_ASSIGN(Service); | |
64 }; | |
65 | |
66 } // namespace shell | |
67 | |
68 #endif // SERVICES_SHELL_PUBLIC_CPP_SERVICE_H_ | |
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