mirror of
https://github.com/pgbackrest/pgbackrest.git
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0a96a2895d
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.
210 lines
6.7 KiB
Perl
210 lines
6.7 KiB
Perl
####################################################################################################################################
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# Posix File Write
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####################################################################################################################################
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package pgBackRestTest::Common::StoragePosixWrite;
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use parent 'pgBackRest::Common::Io::Handle';
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use strict;
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use warnings FATAL => qw(all);
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use Carp qw(confess);
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use English '-no_match_vars';
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use Fcntl qw(O_RDONLY O_WRONLY O_CREAT O_TRUNC);
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use File::Basename qw(dirname);
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use pgBackRest::Common::Exception;
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use pgBackRest::Common::Log;
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use pgBackRest::Common::Io::Handle;
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use pgBackRest::Storage::Base;
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####################################################################################################################################
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# CONSTRUCTOR
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####################################################################################################################################
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sub new
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{
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my $class = shift;
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# Assign function parameters, defaults, and log debug info
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my
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(
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$strOperation,
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$oDriver,
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$strName,
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$strMode,
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$strUser,
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$strGroup,
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$lTimestamp,
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$bPathCreate,
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$bAtomic,
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$bSync,
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) =
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logDebugParam
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(
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__PACKAGE__ . '->new', \@_,
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{name => 'oDriver', trace => true},
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{name => 'strName', trace => true},
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{name => 'strMode', optional => true, trace => true},
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{name => 'strUser', optional => true, trace => true},
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{name => 'strGroup', optional => true, trace => true},
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{name => 'lTimestamp', optional => true, trace => true},
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{name => 'bPathCreate', optional => true, default => false, trace => true},
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{name => 'bAtomic', optional => true, default => false, trace => true},
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{name => 'bSync', optional => true, default => true, trace => true},
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);
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# Create the class hash
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my $self = $class->SUPER::new("'${strName}'");
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bless $self, $class;
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# Set variables
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$self->{oDriver} = $oDriver;
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$self->{strName} = $strName;
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$self->{strMode} = $strMode;
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$self->{strUser} = $strUser;
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$self->{strGroup} = $strGroup;
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$self->{lTimestamp} = $lTimestamp;
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$self->{bPathCreate} = $bPathCreate;
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$self->{bAtomic} = $bAtomic;
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$self->{bSync} = $bSync;
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# If atomic create temp filename
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if ($self->{bAtomic})
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{
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# Create temp file name
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$self->{strNameTmp} = "$self->{strName}." . $self->{oDriver}->tempExtension();
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}
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# Open file on first write to avoid creating extraneous files on error
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$self->{bOpened} = false;
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# Return from function and log return values if any
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return logDebugReturn
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(
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$strOperation,
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{name => 'self', value => $self, trace => true}
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);
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}
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####################################################################################################################################
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# open - open the file
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####################################################################################################################################
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sub open
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{
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my $self = shift;
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# Get the file name
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my $strFile = $self->{bAtomic} ? $self->{strNameTmp} : $self->{strName};
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# Open the file
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if (!sysopen(
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$self->{fhFile}, $strFile, O_WRONLY | O_CREAT | O_TRUNC, oct(defined($self->{strMode}) ? $self->{strMode} : '0666')))
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{
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# If the path does not exist create it if requested
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if ($OS_ERROR{ENOENT} && $self->{bPathCreate})
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{
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$self->{oDriver}->pathCreate(dirname($strFile), {bIgnoreExists => true, bCreateParent => true});
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$self->{bPathCreate} = false;
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return $self->open();
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}
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logErrorResult($OS_ERROR{ENOENT} ? ERROR_PATH_MISSING : ERROR_FILE_OPEN, "unable to open '${strFile}'", $OS_ERROR);
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}
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# Set file mode to binary
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binmode($self->{fhFile});
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# Set the owner
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$self->{oDriver}->owner($strFile, {strUser => $self->{strUser}, strGroup => $self->{strGroup}});
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# Set handle
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$self->handleWriteSet($self->{fhFile});
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# Mark file as opened
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$self->{bOpened} = true;
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return true;
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}
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####################################################################################################################################
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# write - write data to a file
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####################################################################################################################################
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sub write
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{
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my $self = shift;
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my $rtBuffer = shift;
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# Open file if it is not open already
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$self->open() if !$self->opened();
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return $self->SUPER::write($rtBuffer);
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}
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####################################################################################################################################
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# close - close the file
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####################################################################################################################################
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sub close
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{
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my $self = shift;
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if (defined($self->handle()))
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{
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# Sync the file
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if ($self->{bSync})
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{
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$self->handle()->sync();
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}
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# Close the file
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close($self->handle());
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undef($self->{fhFile});
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# Get current filename
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my $strCurrentName = $self->{bAtomic} ? $self->{strNameTmp} : $self->{strName};
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# Set the modification time
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if (defined($self->{lTimestamp}))
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{
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utime(time(), $self->{lTimestamp}, $strCurrentName)
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or logErrorResult(ERROR_FILE_WRITE, "unable to set time for '${strCurrentName}'", $OS_ERROR);
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}
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# Move the file from temp to final if atomic
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if ($self->{bAtomic})
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{
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$self->{oDriver}->move($strCurrentName, $self->{strName});
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}
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# Set result
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$self->resultSet(COMMON_IO_HANDLE, $self->{lSize});
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# Close parent
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$self->SUPER::close();
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}
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return true;
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}
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####################################################################################################################################
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# Close the handle if it is open (in case close() was never called)
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####################################################################################################################################
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sub DESTROY
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{
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my $self = shift;
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if (defined($self->handle()))
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{
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CORE::close($self->handle());
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undef($self->{fhFile});
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}
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}
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####################################################################################################################################
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# Getters
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####################################################################################################################################
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sub handle {shift->{fhFile}}
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sub opened {shift->{bOpened}}
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sub name {shift->{strName}}
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1;
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