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tailscale: support policies as HuJSON
The `acl` argument of the `tailscale_acl` resource can now be a HuJSON string. Instead of unmarshalling `acl` into an `ACL` struct of the [API client](/~https://github.com/tailscale/tailscale-client-go) just to have the client serialize it into JSON again, policy content gets passed to the Tailscale API verbatim. This allows users to define their policy as HuJSON strings, with comments being preserved. Since JSON is a subset of HuJSON, this is backwards compatible, so I am not adding a separate field for this as has been previously suggested in #227. Validation is now performed by calling the [Validate and test policy file](/~https://github.com/tailscale/tailscale/blob/main/api.md#validate-and-test-policy-file) API, which will help catch any semantic errors in the policy at `terraform plan` stage (for example, when a syntactically correct policy contains configuration that is not supported by the Tailnet's current [pricing plan](https://tailscale.com/pricing)). Finally, this will also allow users to use new fields in the policy without requiring a new release of the Terraform provider. I've also added a new `hujson` field to the `tailscale_acl` data resource that shows current policy as a HuJSON string. Fixes #331 Fixes #227 Signed-off-by: Anton Tolchanov <anton@tailscale.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,11 +1,28 @@ | ||
| resource "tailscale_acl" "sample_acl" { | ||
| resource "tailscale_acl" "as_json" { | ||
| acl = jsonencode({ | ||
| acls : [ | ||
| { | ||
| // Allow all users access to all ports. | ||
| action = "accept", | ||
| users = ["*"], | ||
| ports = ["*:*"], | ||
| }], | ||
| }, | ||
| ], | ||
| }) | ||
| } | ||
|
|
||
| resource "tailscale_acl" "as_hujson" { | ||
| acl = <<EOF | ||
| { | ||
| // Comments in HuJSON policy are preserved when the policy is applied. | ||
| "acls": [ | ||
| { | ||
| // Allow all users access to all ports. | ||
| action = "accept", | ||
| users = ["*"], | ||
| ports = ["*:*"], | ||
| }, | ||
| ], | ||
| } | ||
| EOF | ||
| } |
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