EIM Policy Grammar

This topic explains the grammar for EIM policy documents, based on JSON format and composed of different elements specifying EIM identities and the actions that the permissions relate to.

Policy Documents Language

Policy documents are written in JSON. The following table presents the different characters used in policy documents, that are part of JSON basic rules:

Character	Character Name	User
	Whitespace	To separate individual entities.
" "	Quotation marks	To enclose values (optional for numeric and boolean values).
{ }	Braces	To enclose JSON blocks containing key-value elements.
[ ]	Square brackets	To specify a JSON array as an element value. Arrays let you specify one or more values for a same element (if the element supports it).
,	Comma	To separate values in a JSON array or to separate JSON blocks.

Character

Character Name

User

Whitespace

To separate individual entities.

" "

Quotation marks

To enclose values (optional for numeric and boolean values).

{ }

Braces

To enclose JSON blocks containing key-value elements.

[ ]

Square brackets

To specify a JSON array as an element value. Arrays let you specify one or more values for a same element (if the element supports it).

Comma

To separate values in a JSON array or to separate JSON blocks.

Policy General Grammar

Permissions are declared in policy documents, that contain one or more individual statements defining the permissions in terms of actions. To define permissions contained in a policy, you must set the policy-document attribute as in the following format:

EIM policies are case sensitive. All elements must start with an upper-case letter.

{"Statement":[
              {
               "Action":["xxx","yyy"],
               "Effect":"allow",
               "Resource":["*"],
              },
              {
               "Action":["xxx","yyy"],
               "Effect":"deny",
               "Resource":["*"]
              }
            ]
}

For more information about the different policy document elements, see EIM Policy Elements.

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