1//
2// RotateStrategy.cpp
3//
4// Library: Foundation
5// Package: Logging
6// Module: FileChannel
7//
8// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
9// and Contributors.
10//
11// SPDX-License-Identifier: BSL-1.0
12//
13
14
15#include "Poco/RotateStrategy.h"
16#include "Poco/FileStream.h"
17#include "Poco/DateTimeParser.h"
18#include "Poco/DateTimeFormatter.h"
19#include "Poco/DateTimeFormat.h"
20
21
22namespace Poco {
23
24
25//
26// RotateStrategy
27//
28
29
30RotateStrategy::RotateStrategy()
31{
32}
33
34
35RotateStrategy::~RotateStrategy()
36{
37}
38
39
40//
41// RotateByIntervalStrategy
42//
43
44
45const std::string RotateByIntervalStrategy::ROTATE_TEXT("# Log file created/rotated ");
46
47
48RotateByIntervalStrategy::RotateByIntervalStrategy(const Timespan& span):
49 _span(span),
50 _lastRotate(0)
51{
52 if (span.totalMicroseconds() <= 0) throw InvalidArgumentException("time span must be greater than zero");
53}
54
55
56RotateByIntervalStrategy::~RotateByIntervalStrategy()
57{
58}
59
60
61bool RotateByIntervalStrategy::mustRotate(LogFile* pFile)
62{
63 if (_lastRotate == 0 || pFile->size() == 0)
64 {
65 if (pFile->size() != 0)
66 {
67 Poco::FileInputStream istr(pFile->path());
68 std::string tag;
69 std::getline(istr, tag);
70 if (tag.compare(0, ROTATE_TEXT.size(), ROTATE_TEXT) == 0)
71 {
72 std::string timestamp(tag, ROTATE_TEXT.size());
73 int tzd;
74 _lastRotate = DateTimeParser::parse(DateTimeFormat::RFC1036_FORMAT, timestamp, tzd).timestamp();
75 }
76 else _lastRotate = pFile->creationDate();
77 }
78 else
79 {
80 _lastRotate.update();
81 std::string tag(ROTATE_TEXT);
82 DateTimeFormatter::append(tag, _lastRotate, DateTimeFormat::RFC1036_FORMAT);
83 pFile->write(tag);
84 }
85 }
86 Timestamp now;
87 return _span <= now - _lastRotate;
88}
89
90
91//
92// RotateBySizeStrategy
93//
94
95
96RotateBySizeStrategy::RotateBySizeStrategy(UInt64 size): _size(size)
97{
98 if (size == 0) throw InvalidArgumentException("size must be greater than zero");
99}
100
101
102RotateBySizeStrategy::~RotateBySizeStrategy()
103{
104}
105
106
107bool RotateBySizeStrategy::mustRotate(LogFile* pFile)
108{
109 return pFile->size() >= _size;
110}
111
112
113} // namespace Poco
114