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fix for SF [1980478] FileChannel loses messages with "archive"="timestamp"

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This commit is contained in:
Aleksandar Fabijanic 2008-05-31 13:41:24 +00:00
parent 4fe33a7c49
commit ded102a6a4
1 changed files with 44 additions and 3 deletions
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47
Foundation/include/Poco/ArchiveStrategy.h
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@ -44,6 +44,7 @@
#include "Poco/LogFile.h"
#include "Poco/File.h"
#include "Poco/DateTimeFormatter.h"
#include "Poco/NumberFormatter.h"
namespace Poco {
@ -98,7 +99,7 @@ public:
template <class DT>
class ArchiveByTimestampStrategy: public ArchiveStrategy
/// A timestamp (YYYYMMDDhhmmss) is appended to archived
/// A timestamp (YYYYMMDDhhmmssiii) is appended to archived
/// log files.
{
public:
@ -111,15 +112,55 @@ public:
}
LogFile* archive(LogFile* pFile)
/// Archives the file by appending the current timestamp to the
/// file name. If the new file name exists, additionally a monotonic
/// increasing number is appended to the log file name.
{
std::string path = pFile->path();
delete pFile;
std::string archPath = path;
archPath.append(".");
archPath.append(DateTimeFormatter::format(DT().timestamp(), "%Y%m%d%H%M%S"));
moveFile(path, archPath);
archPath.append(DateTimeFormatter::format(DT().timestamp(), "%Y%m%d%H%M%S%i"));
if (exists(archPath)) archiveByNumber(archPath);
else moveFile(path, archPath);
return new LogFile(path);
}
private:
void archiveByNumber(const std::string& basePath)
/// A monotonic increasing number is appended to the
/// log file name. The most recent archived file
/// always has the number zero.
{
int n = -1;
std::string path;
do
{
path = basePath;
path.append(".");
path.append(NumberFormatter::format(++n));
}
while (exists(path));
while (n >= 0)
{
std::string oldPath = basePath;
if (n > 0)
{
oldPath.append(".");
oldPath.append(NumberFormatter::format(n - 1));
}
std::string newPath = basePath;
newPath.append(".");
newPath.append(NumberFormatter::format(n));
moveFile(oldPath, newPath);
--n;
}
}
};