Sourced from github.com/open-policy-agent/opa's releases.

v0.56.0

This release contains a mix of new features, bugfixes and a new builtin function.

Support for General References in Rule Heads (Experimental)

A new experimental feature in OPA is support for general refs in rule heads. Where a general ref is a reference with variables at arbitrary locations.

package example
import future.keywords
Converting a flat list of users to a mapping by "role" and then "id".
users_by_role[role][id] := user if {
some user in data.users
id := user.id
role := user.role
}
Explicit "admin" key override to the above mapping.
users_by_role.admin[id] := user if {
some user in data.admins
id := user.id
}
Leaf entries can be multi-value.
users_by_country[country] contains user.id if {
some user in data.users
country := user.country
}

General refs are currently not supported by the OPA planner, making this feature unsupported for Wasm and IR.

Note: this feature is disabled by default, and needs to be enabled by setting the EXPERIMENTAL_GENERAL_RULE_REFS environment variable (once the feature is complete - supports Wasm and IR - this requirement will be dropped).

Authored by @​johanfylling.

New Built-In Function: numbers.range_step

Similar to the numbers.range built-in function, numbers.range_step returns an array of numbers in a given range. The new built-in function also allows you to control the step between each entry.

See the documentation on the new built-in for all the details.

Authored by @​sspaink.

New Ecosystem page on The Website

The OPA Ecosystem of related integrations has been refreshed and moved to a more prominent location on the website.

... (truncated)

Sourced from github.com/open-policy-agent/opa's changelog.

0.56.0

This release contains a mix of new features, bugfixes and a new builtin function.

Support for General References in Rule Heads (Experimental)

A new experimental feature in OPA is support for general refs in rule heads. Where a general ref is a reference with variables at arbitrary locations.

package example
import future.keywords
Converting a flat list of users to a mapping by "role" and then "id".
users_by_role[role][id] := user if {
some user in data.users
id := user.id
role := user.role
}
Explicit "admin" key override to the above mapping.
users_by_role.admin[id] := user if {
some user in data.admins
id := user.id
}
Leaf entries can be multi-value.
users_by_country[country] contains user.id if {
some user in data.users
country := user.country
}

General refs are currently not supported by the OPA planner, making this feature unsupported for Wasm and IR.

Note: this feature is disabled by default, and needs to be enabled by setting the EXPERIMENTAL_GENERAL_RULE_REFS environment variable (once the feature is complete - supports Wasm and IR - this requirement will be dropped).

Authored by @​johanfylling.

New Built-In Function: numbers.range_step

Similar to the numbers.range built-in function, numbers.range_step returns an array of numbers in a given range. The new built-in function also allows you to control the step between each entry.

See the documentation on the new built-in for all the details.

Authored by @​sspaink.

New Ecosystem page on The Website

... (truncated)

• 016cb07 Prepare v0.56.0 release (#6202)
• 65a8b7d [docs] Address issues with Ecosystem links in navs (#6200)
• 760c586 [docs] Add intro text to Ecosystem sections (#6201)
• 0431567 General refs in rule heads (#5913)
• 9bf5478 [docs] Move OPA ecosystem pages to site top-level (#6198)
• df0addf Changed the LoadPaths function.
• dea7c10 build(deps): bump oras.land/oras-go/v2 from 2.2.1 to 2.3.0
• 9cab6c9 chore: Replace ghodss/yaml with sigs.k8s.io/yaml (#6195)
• c28eaf7 topdown: add numbers.range_step built-in function (#6187)
• 519eea7 remove not required basedir for oci bundles & add test to verify signature ve...
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