blob: 8bf570c08b76618a02e281b553d3d4ddc930f225 (
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
|
// -*- C++ -*-
//=============================================================================
/**
* @file Push_Iterator_Factory_i.h
*
* $Id$
*
* Header file for the push Web_Server::Iterator_Factory implementation.
*
*
* @author Ossama Othman <ossama@uci.edu>
*/
//=============================================================================
#ifndef PUSH_ITERATOR_FACTORY_I_H
#define PUSH_ITERATOR_FACTORY_I_H
#include /**/ "ace/pre.h"
#include "ace/FILE_Addr.h"
#include "ace/FILE_IO.h"
#include "Push_Web_ServerS.h"
#include "ace/OS_NS_sys_stat.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class Push_Iterator_Factory_i :
virtual public POA_Web_Server::Iterator_Factory
{
// = TITLE
// Implement the Web_Server::Iterator_Factory interface.
//
// = DESCRIPTION
// This class is used to register a client-side <Callback> object
// with the Content Server, which is actually implemented by the
// <Callback_Handler> class for each requested file.
//
// The client invokes the register_callback() method in this
// class. That method then creates a <Callback_Handler> which
// will push chunks of data asynchronously to the client-side
// <Callback> object. This allows the Content Server to
// concurrently service multiple file requests without the need
// to explicitly use threads at the application level.
public:
/**
* This registration method passes a <Callback> that the Web server
* uses to ``push'' data associated with <pathname> one ``chunk'' at
* a time. The <metadata> reports information about the <pathname>.
*/
Web_Server::Metadata_Type *register_callback
(const char *pathname,
Web_Server::Callback_ptr client_callback);
/// Set the file modification date in the metadata structure.
int modification_date (ACE_stat *file_status,
Web_Server::Metadata_Type &metadata);
/// Set the type of file content in the metadata structure.
int content_type (const char *filename,
Web_Server::Metadata_Type &metadata);
private:
/// Reference to the object that is used by the server to push chunks
/// of data to the client.
Web_Server::Callback_var client_callback_;
};
#include /**/ "ace/post.h"
#endif /* PUSH_ITERATOR_FACTORY_I_H */
|
