Custom Resources in Chef

Custom Resources in ChefWriting custom resources in Chef is a bit different than writing code. You need to be familiar with the Chef format and the Chef API to write such. The Chef API is an object-oriented interface to the Chef engine which also gives access to the resource objects which are Chef resource groups and resources within a group. The Chef API takes the form of a class and it is really easy to get it working and use.It is important to understand that there are no private members in the Chef engine because any call on any resource in the Chef engine will always return the same instance. The instance will be retrieved from the namespace where the resource is being used. A good example of this is that the example resource instance returned by the compute resource is the same instance returned by the docker resource.The examples that the compute resource uses is the container resource instance which is a resource within the container group. You can find this resource at the d omain resource. The docker resource is a container resource, which is inside the docker group. The Docker resource is used when running in Docker because it is used to generate the private keys for any resource group of which it is part.There are several resources that are associated with the node resource instances. You can access the resource instances through their namespaces or by their ID. The object ID is the default value that is assigned to the resource instance in the Chef engine.The id is the identifier that is assigned to the resource in the Chef engine which is a description of the resource instance and it can include other information such as the name, the primary roles, the security constraints, the user-defined attributes and the group-defined attributes. This information is stored as part of the resource class, which is typically a resources/resource.On file that can be found within the resource directory in the directory resource.Writing custom resources in Chef is only one aspect of the implementation. Custom resources are used by any component of the system to store their data so they can read from it as well as write to it. You need to be aware of the fact that the representation of the data within the Chef engine is binary and needs to be handled properly.When writing custom resources in Chef, you need to consider the representation of the data as binary. There are two representations available in the Chef engine. The first is the File format representation which is an object-oriented representation that is accessed in the server of the Chef package which is simply called chef. The second is the schema that is used to build the representation of the data so that it can be read and written in the Chef package.