1
0
mirror of https://github.com/pgbackrest/pgbackrest.git synced 2024-12-12 10:04:14 +02:00
pgbackrest/test/lib/pgBackRestTest/Common/StoragePosixWrite.pm
David Steele 0a96a2895d Add storage layer for tests and documentation.
The tests and documentation have been using the core storage layer but soon that will depend entirely on the C library, creating a bootstrap problem (i.e. the storage layer will be needed to build the C library).

Create a simplified Posix storage layer to be used by documentation and the parts of the test code that build and execute the actual tests.  The actual tests will still use the core storage driver so they can interact with any type of storage.
2019-06-17 09:16:44 -04:00

210 lines
6.7 KiB
Perl

####################################################################################################################################
# Posix File Write
####################################################################################################################################
package pgBackRestTest::Common::StoragePosixWrite;
use parent 'pgBackRest::Common::Io::Handle';
use strict;
use warnings FATAL => qw(all);
use Carp qw(confess);
use English '-no_match_vars';
use Fcntl qw(O_RDONLY O_WRONLY O_CREAT O_TRUNC);
use File::Basename qw(dirname);
use pgBackRest::Common::Exception;
use pgBackRest::Common::Log;
use pgBackRest::Common::Io::Handle;
use pgBackRest::Storage::Base;
####################################################################################################################################
# CONSTRUCTOR
####################################################################################################################################
sub new
{
my $class = shift;
# Assign function parameters, defaults, and log debug info
my
(
$strOperation,
$oDriver,
$strName,
$strMode,
$strUser,
$strGroup,
$lTimestamp,
$bPathCreate,
$bAtomic,
$bSync,
) =
logDebugParam
(
__PACKAGE__ . '->new', \@_,
{name => 'oDriver', trace => true},
{name => 'strName', trace => true},
{name => 'strMode', optional => true, trace => true},
{name => 'strUser', optional => true, trace => true},
{name => 'strGroup', optional => true, trace => true},
{name => 'lTimestamp', optional => true, trace => true},
{name => 'bPathCreate', optional => true, default => false, trace => true},
{name => 'bAtomic', optional => true, default => false, trace => true},
{name => 'bSync', optional => true, default => true, trace => true},
);
# Create the class hash
my $self = $class->SUPER::new("'${strName}'");
bless $self, $class;
# Set variables
$self->{oDriver} = $oDriver;
$self->{strName} = $strName;
$self->{strMode} = $strMode;
$self->{strUser} = $strUser;
$self->{strGroup} = $strGroup;
$self->{lTimestamp} = $lTimestamp;
$self->{bPathCreate} = $bPathCreate;
$self->{bAtomic} = $bAtomic;
$self->{bSync} = $bSync;
# If atomic create temp filename
if ($self->{bAtomic})
{
# Create temp file name
$self->{strNameTmp} = "$self->{strName}." . $self->{oDriver}->tempExtension();
}
# Open file on first write to avoid creating extraneous files on error
$self->{bOpened} = false;
# Return from function and log return values if any
return logDebugReturn
(
$strOperation,
{name => 'self', value => $self, trace => true}
);
}
####################################################################################################################################
# open - open the file
####################################################################################################################################
sub open
{
my $self = shift;
# Get the file name
my $strFile = $self->{bAtomic} ? $self->{strNameTmp} : $self->{strName};
# Open the file
if (!sysopen(
$self->{fhFile}, $strFile, O_WRONLY | O_CREAT | O_TRUNC, oct(defined($self->{strMode}) ? $self->{strMode} : '0666')))
{
# If the path does not exist create it if requested
if ($OS_ERROR{ENOENT} && $self->{bPathCreate})
{
$self->{oDriver}->pathCreate(dirname($strFile), {bIgnoreExists => true, bCreateParent => true});
$self->{bPathCreate} = false;
return $self->open();
}
logErrorResult($OS_ERROR{ENOENT} ? ERROR_PATH_MISSING : ERROR_FILE_OPEN, "unable to open '${strFile}'", $OS_ERROR);
}
# Set file mode to binary
binmode($self->{fhFile});
# Set the owner
$self->{oDriver}->owner($strFile, {strUser => $self->{strUser}, strGroup => $self->{strGroup}});
# Set handle
$self->handleWriteSet($self->{fhFile});
# Mark file as opened
$self->{bOpened} = true;
return true;
}
####################################################################################################################################
# write - write data to a file
####################################################################################################################################
sub write
{
my $self = shift;
my $rtBuffer = shift;
# Open file if it is not open already
$self->open() if !$self->opened();
return $self->SUPER::write($rtBuffer);
}
####################################################################################################################################
# close - close the file
####################################################################################################################################
sub close
{
my $self = shift;
if (defined($self->handle()))
{
# Sync the file
if ($self->{bSync})
{
$self->handle()->sync();
}
# Close the file
close($self->handle());
undef($self->{fhFile});
# Get current filename
my $strCurrentName = $self->{bAtomic} ? $self->{strNameTmp} : $self->{strName};
# Set the modification time
if (defined($self->{lTimestamp}))
{
utime(time(), $self->{lTimestamp}, $strCurrentName)
or logErrorResult(ERROR_FILE_WRITE, "unable to set time for '${strCurrentName}'", $OS_ERROR);
}
# Move the file from temp to final if atomic
if ($self->{bAtomic})
{
$self->{oDriver}->move($strCurrentName, $self->{strName});
}
# Set result
$self->resultSet(COMMON_IO_HANDLE, $self->{lSize});
# Close parent
$self->SUPER::close();
}
return true;
}
####################################################################################################################################
# Close the handle if it is open (in case close() was never called)
####################################################################################################################################
sub DESTROY
{
my $self = shift;
if (defined($self->handle()))
{
CORE::close($self->handle());
undef($self->{fhFile});
}
}
####################################################################################################################################
# Getters
####################################################################################################################################
sub handle {shift->{fhFile}}
sub opened {shift->{bOpened}}
sub name {shift->{strName}}
1;