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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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