Hi, I try to develop a new module to deploy resources with an API REST. But I have problems to define relationship between two resources. I haven't problem to fetch and flush resource individually. This two resources are fetch with a REST endpoint but I can have the relationship between resources with only one endpoint. When I want to delete a resource, I must remove the relationship before removing this resource. But I can't know its dependencies because it is not returned by its REST endpoint. They are returned by the endpoint of the other resource.
It is not easy to describe it so I'm going to explain it with an example. I have two resources group and user with two REST endpoints (with an example response) : http://host/api/group : [{name: 'developer'},{name: 'user'}] http://host/api/user : [{ name: 'bob', groups: ['developer', 'user'] }, { name: 'alex', groups: ['user'] }] So I create two types and two provider to manage them : Puppet::Type.newtype(:group) do apply_to_device ensurable newparam(:name, :namevar => true) end Puppet::Type.newtype(:user) do apply_to_device ensurable newparam(:name, :namevar => true) newproperty(:groups, :array_matching => :all) autorequire(:group) do self[:group] end end The puppet config is : node 'host' { user { 'bob': ensure => present, groups => ['developer', 'user'], } user { 'alex': ensure => present, groups => ['user'], } group { 'developer', ensure => present, } group { 'user', ensure => present, } } When I run "puppet device", the log is : prefetch group flush group 'developer' flush group 'user' prefetch user flush user 'bob' flush user 'alex' Now I want to delete a group : node 'host' { user { 'bob': ensure => present, groups => ['user'], } user { 'alex': ensure => present, groups => ['user'], } group { 'developer', ensure => absent, } group { 'user', ensure => present, } } When I run "puppet device", the log should be : prefetch group destroy group 'developer' prefetch user flush user 'bob' But, when I want to delete a group, the endpoint check if is not affected to a user and throw an exception it there is any relationship. So, I must remove all user group before remove the group. But I think this is not possible to do this with puppet because the management of each resource is by type. Puppet doesn't know the relations of a group when it flush the data group. Is it possible with puppet to update the state of resources in this order : prefetch group prefetch user destroy group 'developer' and relationship with user 'bob' flush user 'bob' I try other solution with an autosubscribe instead of autorequire to have a notification when the group is deleted but this notification happens at the end : prefetch group destroy group 'developer' flush group 'user' prefetch user flush user 'bob' flush user 'alex' notify user 'bob' I think the best order to do this is : prefetch group prefetch user notify user 'bob' => Call an REST endpoint to remove relationship destroy group 'developer' flush group 'user' flush user 'bob' flush user 'alex' Cheers, Thomas -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/puppet-users/df12fe71-070e-4a37-8b6f-e264b9470daf%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
