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add dryrun support #33

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add dryrun support #33

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21 changes: 20 additions & 1 deletion lib/VM/EC2.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -780,6 +780,7 @@ sub new {
secret => $secret,
security_token => $token,
endpoint => $endpoint_url,
dryrun => 0,
idempotent_seed => sha1_hex(rand()),
raise_error => $raise_error,
print_error => $print_error,
Expand Down Expand Up @@ -898,6 +899,23 @@ sub region {
return $current_region;
}

=head2 $ec2->dryrun($boolean)

Set DryRun Mode. If enabled, checks whether you have the required
permissions for the action, without actually making the request.
If you have the required permissions, the request returns DryRunOperation;
otherwise, it returns UnauthorizedOperation.

=cut

sub dryrun {
my $self = shift;
my $d = $self->{dryrun};
$self->{dryrun} = shift if @_;
$d;
}


=head2 $ec2->raise_error($boolean)

Change the handling of error conditions. Pass a true value to cause
Expand Down Expand Up @@ -1837,7 +1855,7 @@ sub _call_async {
# called if AWS::Signature4 NOT present; use built-in method
unless (AWS::Signature4->can('new')) {
my ($action,@param) = @_;
my $post = $self->_signature(Action=>$action,@param);
my $post = $self->_signature(Action=>$action,$self->dryrun?(DryRun=>"true"):(),@param);
my $u = URI->new($self->endpoint);
$u->query_form(@$post);
return $self->async_post($action,POST($self->endpoint,Content=>$u->query));
Expand All @@ -1850,6 +1868,7 @@ sub _call_async {
Content => [
Action => $action,
Version => $self->version,
$self->dryrun ? ( DryRun => "true" ) : (),
@param
]);
my $access_key = $self->access_key;
Expand Down