blob: 021b669aabfad535ecd406381722131876cbf70a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_SERVICE_SERVICE_PROCESS_CONTROL_H_
#define CHROME_BROWSER_SERVICE_SERVICE_PROCESS_CONTROL_H_
#include <queue>
#include <string>
#include "base/id_map.h"
#include "base/callback.h"
#include "base/process.h"
#include "base/scoped_ptr.h"
#include "base/task.h"
#include "ipc/ipc_sync_channel.h"
class Profile;
// A ServiceProcessControl works as a portal between the service process and
// the browser process.
//
// It is used to start and terminate the service process. It is also used
// to send and receive IPC messages from the service process.
//
// THREADING
//
// This class is accessed on the UI thread through some UI actions. It then
// talks to the IPC channel on the IO thread.
class ServiceProcessControl : public IPC::Channel::Sender,
public IPC::Channel::Listener {
public:
typedef IDMap<ServiceProcessControl>::iterator iterator;
typedef std::queue<IPC::Message> MessageQueue;
// An interface for handling messages received from the service process.
class MessageHandler {
public:
virtual ~MessageHandler() {}
// This is a test signal sent from the service process. This can be used
// the healthiness of the service.
virtual void OnGoodDay() = 0;
};
// Construct a ServiceProcessControl with |profile|..
explicit ServiceProcessControl(Profile* profile);
virtual ~ServiceProcessControl();
// Return the user profile associated with this service process.
Profile* profile() const { return profile_; }
// Return true if this object is connected to the service.
bool is_connected() const { return channel_.get() != NULL; }
// Create a new service process and connects to it.
// |launch_done_task| is called if launching the service process has failed
// or we have successfully launched the process and connected to it.
// If the service process is already running this method will try to connect
// to the service process.
void Launch(Task* launch_done_task);
// IPC::Channel::Listener implementation.
virtual void OnMessageReceived(const IPC::Message& message);
virtual void OnChannelConnected(int32 peer_pid);
virtual void OnChannelError();
// IPC::Channel::Sender implementation
virtual bool Send(IPC::Message* message);
// Message handlers
void OnGoodDay();
void OnCloudPrintProxyIsEnabled(bool enabled, std::string email);
// Send a hello message to the service process for testing purpose.
// Return true if the message was sent.
bool SendHello();
// Send a shutdown message to the service process. IPC channel will be
// destroyed after calling this method.
// Return true if the message was sent.
bool Shutdown();
// Send a message to enable the remoting service in the service process.
// Return true if the message was sent.
bool EnableRemotingWithTokens(const std::string& user,
const std::string& remoting_token,
const std::string& talk_token);
// Send a message to the service process to request a response
// containing the enablement status of the cloud print proxy and the
// registered email address. The callback gets the information when
// received.
bool GetCloudPrintProxyStatus(
Callback2<bool, std::string>::Type* cloud_print_status_callback);
// Set the message handler for receiving messages from the service process.
// TODO(hclam): Allow more than 1 handler.
void SetMessageHandler(MessageHandler* message_handler) {
message_handler_ = message_handler;
}
private:
class Launcher;
// Method called by Launcher when the service process is launched.
void OnProcessLaunched(Task* launch_done_task);
// Used internally to connect to the service process. |task| is executed
// when the connection is made or an error occurred.
void ConnectInternal(Task* task);
Profile* profile_;
// IPC channel to the service process.
scoped_ptr<IPC::SyncChannel> channel_;
// Service process launcher.
scoped_refptr<Launcher> launcher_;
// Callback that gets invoked when the channel is connected or failed to
// connect.
scoped_ptr<Task> connect_done_task_;
// Callback that gets invoked when a status message is received from
// the cloud print proxy.
scoped_ptr<Callback2<bool, std::string>::Type> cloud_print_status_callback_;
// Handler for messages from service process.
MessageHandler* message_handler_;
};
#endif // CHROME_BROWSER_SERVICE_SERVICE_PROCESS_CONTROL_H_
|
