Class: BuildCloud::IAMUser

Inherits:
Object
  • Object
show all
Includes:
Component
Defined in:
lib/build-cloud/iamuser.rb

Constant Summary collapse

@@objects = 
[]

Instance Method Summary collapse

Methods included from Component

included

Constructor Details

#initialize(fog_interfaces, log, options = {}) ⇒ IAMUser

Returns a new instance of IAMUser.



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# File 'lib/build-cloud/iamuser.rb', line 9

def initialize ( fog_interfaces, log, options = {} )

    @iam     = fog_interfaces[:iam]
    @log     = log
    @options = options

    @log.debug( options.inspect )

    required_options(:id)

end

Instance Method Details

#create ⇒ Object 



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# File 'lib/build-cloud/iamuser.rb', line 21

def create
    
    policies = @options.delete(:policies)
    groups = @options.delete(:groups)
    
    unless exists?

        @log.info( "Creating new IAM user #{@options[:id]}" )

        user = @iam.users.new( @options )
        user.save

        @log.debug( user.inspect )
    else
        user = fog_object
    end
    
    @log.debug("User is : #{user.inspect}")
    
    #if there are :policies: attach and remove any not listed
    # if a policy is managed then it requires an arn, and to be created under :iam_managed_policies:
    # or amazons policy arns
    # if a policy is a user one, then it needs :name: and :document:
    rationalise_policies( policies )
    
    # Users are added to groups under :iam_groups:

end

#delete ⇒ Object 



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# File 'lib/build-cloud/iamuser.rb', line 167

def delete

    return unless exists?
    @log.info( "Deleting IAM users for #{@options[:id]}" )

    #detach all policies
    #Manged Policies
    fog_object.attached_policies.each do |p|
        fog_object.detach(p)
    end
    
    fog_object.policies.each do |p|
        @iam.delete_user_policy(@options[:id], p.id)
    end

    #remove from group
    @iam.list_groups_for_user(@options[:id]).body['GroupsForUser'].each do |g|
        @iam.remove_user_from_group(g['GroupName'], fog_object.id)
    end
    
    #remove all users
    fog_object.destroy
end

#rationalise_policies(policies) ⇒ Object 



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# File 'lib/build-cloud/iamuser.rb', line 50

def rationalise_policies( policies )

    policies = {} if policies.nil?

    managed_policies_to_add  = []
    user_policies_to_add  = []
    current_managed_policies = []
    current_user_policies = []
    
    fog_object.attached_policies.each do |p|
        current_managed_policies << { :arn => p.arn }
    end
    
    fog_object.policies.each do |p|
        current_user_policies << { :document => p.document, :id => p.id }
    end
    
    # Build add lists
    policies.each do |p|
        @log.debug("Policy action on is #{p}")
        if p[:arn]
            @log.debug("For user #{fog_object.id} checking managed policy #{p[:arn]}")
            # Assume adding policy
            add_policy = true
            current_managed_policies.each do |cmp|
                add_policy = false if cmp[:arn] == p[:arn]
            end
            if add_policy   
                @log.debug("Adding #{p[:arn]} to list" ) 
                managed_policies_to_add << { :arn => p[:arn] }
            end
        elsif p[:id]
            @log.debug("For user #{fog_object.id} checking policy #{p[:id]}")
            # Assume adding policy
            pa = {
                :document => JSON.parse(p[:document]),
                :id       => p[:id],
            }
            user_policies_to_add << pa
        end
    end
    
    policies.each do |p|
        # If we find a current policy that matches the desired policy, then
        # remove that from the list of current policies - we will remove any
        # remaining policies
        if p[:arn]
            current_managed_policies.delete_if do |c|
                if c[:arn] == p[:arn]
                    @log.debug( "#{p[:arn]} already exists" )
                    true # so that delete_if removes the list item
                else
                    false
                end
            end
        elsif p[:id]
            current_user_policies.delete_if do |c|
                if c[:id] == p[:id]
                    @log.debug( "#{p[:id]} already exists" )
                    
                    # Remove from the policies to add if the policy documents match
                    user_policies_to_add.delete_if do |a|
                        if (c[:id] == a[:id]) and
                           (c[:document] == a[:document])
                            @log.debug("#{p[:id]} is a match" )
                            true
                        else
                            false
                        end
                    end
                    true # so that delete_if removes the list item
                else
                    false
                end
            end
        end
    end

    # At the end of this loop, anything left in the user_current_policies list
    # represents a policy that's present on the infra, but should be deleted
    # (since there's no matching desired policy), so delete those.
    # Changing a rule maps to "delete old rule, create new one".

    current_user_policies.each do |p|
        @log.debug( "Removing policy #{p.inspect}" )
        @log.info( "For user #{fog_object.id} removing policy #{p[:id]}" )
        @iam.delete_user_policy(fog_object.id, p[:id])
    end

    user_policies_to_add.each do |p|
        @log.debug( "For user #{fog_object.id} adding/updating policy #{p}" )
        @log.info( "For user #{fog_object.id} adding/updating policy #{p[:id]}" )
        @iam.put_user_policy( fog_object.id, p[:id], p[:document] )
    end
    
    # And the same for managed policies, but we just detatch them:
    current_managed_policies.each do |p|
        @log.debug( "Detatching policy #{p.inspect}" )
        @log.info( "For user #{fog_object.id} detatcing policy #{p[:arn]}" )
        fog_object.detach(p[:arn])
    end
    
    managed_policies_to_add.each do |p|
        @log.debug( "For user #{fog_object.id} attaching policy #{p}" )
        @log.info( "For user #{fog_object.id} attaching policy #{p[:arn]}" )
        mp = @iam.managed_policies.select { |r| r.arn == p[:arn] }.first
        mp.attach(fog_object)
    end
    
end

#read ⇒ Object Also known as: fog_object 



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# File 'lib/build-cloud/iamuser.rb', line 161

def read
    @iam.users.select { |r| r.id == @options[:id] }.first
end