NAME

       VM::EC2::Security::Policy -- Simple IAM policy generator for EC2

SYNOPSIS

        my $policy = VM::EC2::Security::Policy->new;
        $policy->allow('Describe*','CreateVolume','delete_volume');
        $policy->deny('DescribeVolumes');
        print $policy->as_string;

DESCRIPTION

       This is a very simple Identity and Access Management (IAM) policy statement generator that
       works sufficiently well to create policies to control access EC2 resources. It is not
       fully general across all AWS services.

METHODS

       This section describes the methods available to VM::EC2::Security::Policy. You will create
       a new, empty, policy using new(), grant access to EC2 actions using allow(), and deny
       access to EC2 actions using deny(). When you are done, either call as_string(), or just
       use the policy object in a string context, to get a properly-formatted policy string.

       allow() and deny() return the modified object, allowing you to chain methods. For example:

        my $p = VM::EC2::Security::Policy->new
                    ->allow('Describe*')
                    ->deny('DescribeImages','DescribeInstances');
        print $p;

   $policy = VM::EC2::Security::Policy->new()
       This class method creates a new, empty policy object. The default policy object denies all
       access to EC2 resources.

   $policy->allow('action1','action2','action3',...)
       Grant access to the listed EC2 actions. You may specify actions using Amazon's MixedCase
       notation (e.g. "DescribeInstances"), or using VM::EC2's more Perlish underscore notation
       (e.g. "describe_instances"). You can find the list of actions in VM::EC2, or in the Amazon
       API documentation at
       http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/OperationList-query.html.

       The "*" wildcard allows you to indicate a series of matching operations. For example, to
       allow all Describe operations:

        $policy->allow('Describe*')

       As described earlier, allow() returns the object, making it easy to chain methods.

   $policy->deny('action1','action2','action3',...)
       Similar to allow(), but in this case denies access to certain actions. Deny statements
       take precedence over allow statements.

       As described earlier, deny() returns the object, making it easy to chain methods.

   $string = $policy->as_string
       Converts the policy into a JSON string that can be passed to
       VM::EC2->get_federation_token(), or other AWS libraries.

STRING OVERLOADING

       When used in a string context, this object will interpolate into the policy JSON string
       using as_string().

SEE ALSO

       VM::EC2 VM::EC2::Generic

AUTHOR

       Lincoln Stein <lincoln.stein@gmail.com>.

       Copyright (c) 2011 Ontario Institute for Cancer Research

       This package and its accompanying libraries is free software; you can redistribute it
       and/or modify it under the terms of the GPL (either version 1, or at your option, any
       later version) or the Artistic License 2.0.  Refer to LICENSE for the full license text.
       In addition, please see DISCLAIMER.txt for disclaimers of warranty.