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Add a test framework for recovery

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This long-awaited framework is an expansion of the existing PostgresNode
stuff to support additional features for recovery testing; the recovery
tests included in this commit are a starting point that cover some of
the recovery features we have.  More scripts are expected to be added
later.

Author: Michaël Paquier, a bit of help from Amir Rohan
Reviewed by: Amir Rohan, Stas Kelvich, Kyotaro Horiguchi, Victor Wagner,
Craig Ringer, Álvaro Herrera
Discussion: http://www.postgresql.org/message-id/CAB7nPqTf7V6rswrFa=q_rrWeETUWagP=h8LX8XAov2Jcxw0DRg@mail.gmail.com
Discussion: http://www.postgresql.org/message-id/trinity-b4a8035d-59af-4c42-a37e-258f0f28e44a-1443795007012@3capp-mailcom-lxa08
This commit is contained in:
Alvaro Herrera
2016-02-26 16:13:30 -03:00
parent 89ac7004da
commit 49148645f7
12 changed files with 501 additions and 5 deletions
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74
src/test/perl/PostgresNode.pm
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@ -346,6 +346,9 @@ On Windows, we use SSPI authentication to ensure the same (by pg_regress
pg_hba.conf is configured to allow replication connections. Pass the keyword
parameter hba_permit_replication => 0 to disable this.
WAL archiving can be enabled on this node by passing the keyword parameter
has_archiving => 1. This is disabled by default.
postgresql.conf can be set up for replication by passing the keyword
parameter allows_streaming => 1. This is disabled by default.
@ -364,6 +367,7 @@ sub init
$params{hba_permit_replication} = 1
unless defined $params{hba_permit_replication};
$params{allows_streaming} = 0 unless defined $params{allows_streaming};
$params{has_archiving} = 0 unless defined $params{has_archiving};
mkdir $self->backup_dir;
mkdir $self->archive_dir;
@ -401,6 +405,7 @@ sub init
close $conf;
$self->set_replication_conf if $params{hba_permit_replication};
$self->enable_archiving if $params{has_archiving};
}
=pod
@ -458,13 +463,20 @@ Initialize a node from a backup, which may come from this node or a different
node. root_node must be a PostgresNode reference, backup_name the string name
of a backup previously created on that node with $node->backup.
Does not start the node after init.
Does not start the node after initializing it.
A recovery.conf is not created.
pg_hba.conf is configured to allow replication connections. Pass the keyword
parameter hba_permit_replication => 0 to disable this.
Streaming replication can be enabled on this node by passing the keyword
parameter has_streaming => 1. This is disabled by default.
Restoring WAL segments from archives using restore_command can be enabled
by passiong the keyword parameter has_restoring => 1. This is disabled by
default.
The backup is copied, leaving the original unmodified. pg_hba.conf is
unconditionally set to enable replication connections.
@ -479,6 +491,10 @@ sub init_from_backup
my $root_name = $root_node->name;
$params{has_streaming} = 0 unless defined $params{has_streaming};
$params{hba_permit_replication} = 1
unless defined $params{hba_permit_replication};
$params{has_restoring} = 0 unless defined $params{has_restoring};
print
"# Initializing node \"$node_name\" from backup \"$backup_name\" of node \"$root_name\"\n";
die "Backup \"$backup_name\" does not exist at $backup_path"
@ -498,8 +514,9 @@ sub init_from_backup
qq(
port = $port
));
$self->set_replication_conf;
$self->set_replication_conf if $params{hba_permit_replication};
$self->enable_streaming($root_node) if $params{has_streaming};
$self->enable_restoring($root_node) if $params{has_restoring};
}
=pod
@ -608,6 +625,59 @@ standby_mode=on
));
}
# Internal routine to enable archive recovery command on a standby node
sub enable_restoring
{
my ($self, $root_node) = @_;
my $path = $root_node->archive_dir;
my $name = $self->name;
print "### Enabling WAL restore for node \"$name\"\n";
# On Windows, the path specified in the restore command needs to use
# double back-slashes to work properly and to be able to detect properly
# the file targeted by the copy command, so the directory value used
# in this routine, using only one back-slash, need to be properly changed
# first. Paths also need to be double-quoted to prevent failures where
# the path contains spaces.
$path =~ s{\\}{\\\\}g if ($TestLib::windows_os);
my $copy_command = $TestLib::windows_os ?
qq{copy "$path\\\\%f" "%p"} :
qq{cp $path/%f %p};
$self->append_conf('recovery.conf', qq(
restore_command = '$copy_command'
standby_mode = on
));
}
# Internal routine to enable archiving
sub enable_archiving
{
my ($self) = @_;
my $path = $self->archive_dir;
my $name = $self->name;
print "### Enabling WAL archiving for node \"$name\"\n";
# On Windows, the path specified in the restore command needs to use
# double back-slashes to work properly and to be able to detect properly
# the file targeted by the copy command, so the directory value used
# in this routine, using only one back-slash, need to be properly changed
# first. Paths also need to be double-quoted to prevent failures where
# the path contains spaces.
$path =~ s{\\}{\\\\}g if ($TestLib::windows_os);
my $copy_command = $TestLib::windows_os ?
qq{copy "%p" "$path\\\\%f"} :
qq{cp %p $path/%f};
# Enable archive_mode and archive_command on node
$self->append_conf('postgresql.conf', qq(
archive_mode = on
archive_command = '$copy_command'
));
}
# Internal method
sub _update_pid
{