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
|
// -*- mode: c++; c-basic-offset:4 -*-
// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.
// Copyright (c) 2002,2003 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
#ifndef cache_http_response_h
#define cache_http_response_h
#include <cstdio>
#include "HTTPResponse.h"
#include "debug.h"
namespace libdap {
/** Encapsulate a response. Instead of directly returning the FILE pointer
from which a response is read, return an instance of this object. */
class HTTPCacheResponse : public HTTPResponse {
private:
HTTPCache *d_cache; // pointer to singleton instance
protected:
/** @name Suppressed default methods */
//@{
HTTPCacheResponse();
HTTPCacheResponse(const HTTPCacheResponse &rs);
HTTPCacheResponse &operator=(const HTTPCacheResponse &);
//@}
public:
/** Build a Response object. Instances of this class are used to
represent responses from a local HTTP/1.1 cache. The stream and
headers pointer are passed to the parent (HTTPResponse); there's no
temporary file for the parent to manage since the body is read from a
file managed by the cache subsystem. This class releases the lock on
the cache entry when the destructor is called. */
HTTPCacheResponse(FILE *s, int status_code, vector<string> *headers, HTTPCache *c)
: HTTPResponse(s, status_code, headers, ""), d_cache(c) {}
/** Build a Response object. Instances of this class are used to
represent responses from a local HTTP/1.1 cache. The stream and
headers pointer are passed to the parent (HTTPResponse); there's no
temporary file for the parent to manage since the body is read from a
file managed by the cache subsystem. This class releases the lock on
the cache entry when the destructor is called. */
HTTPCacheResponse(FILE *s, int status_code, vector<string> *headers, const string &file_name, HTTPCache *c)
: HTTPResponse(s, status_code, headers, file_name), d_cache(c) {}
/** Free the cache entry lock. Call the parent's destructor. */
virtual ~HTTPCacheResponse() {
DBG(cerr << "Freeing HTTPCache resources... ");
set_file(""); // This keeps ~HTTPResponse() from removing the cache entry.
d_cache->release_cached_response(get_stream());
DBGN(cerr << endl);
}
};
} // namespace libdap
#endif // cache_http_response_h
|
