cerbos 0.5.0

Rust SDK for working with Cerbos: an open core, language-agnostic, scalable authorization solution
Documentation
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// Copyright 2021-2025 Zenauth Ltd.
// SPDX-License-Identifier: Apache-2.0
#![cfg(feature = "admin")]

use std::{
    collections::{HashMap, HashSet},
    path::PathBuf,
};

use anyhow::Result;
use cerbos::{
    genpb::google,
    sdk::admin::model::{FilterOptions, PolicySet},
};

const ADMIN_USERNAME: &str = "cerbos";
const ADMIN_PASSWORD: &str = "cerbosAdmin";

#[cfg(feature = "testcontainers")]
trait Stoppable {
    async fn stop(&self) -> anyhow::Result<()>;
}

#[cfg(feature = "testcontainers")]
impl<T: testcontainers::Image> Stoppable for testcontainers::ContainerAsync<T> {
    async fn stop(&self) -> anyhow::Result<()> {
        use anyhow::Context;
        self.stop_with_timeout(None)
            .await
            .context("can't stop container")
    }
}
fn get_test_data_path(subpath: &[&str]) -> PathBuf {
    let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
    path.push("tests");
    path.push("testdata");
    subpath.iter().for_each(|p| path.push(p));
    path
}

#[cfg(all(feature = "testcontainers", feature = "admin"))]
async fn async_tls_client(
    temp_dir: &tempfile::TempDir,
) -> Result<(cerbos::sdk::admin::CerbosAdminClient, impl Stoppable)> {
    use cerbos::sdk::{
        admin::CerbosAdminClient,
        container::{certs::CerbosTestTlsConfig, CerbosContainer},
        CerbosClientOptions, CerbosEndpoint,
    };
    use testcontainers::runners::AsyncRunner;

    let config_path = get_test_data_path(&["configs", "tcp_with_tls.yaml"]);

    let hostname = "localhost";
    let tls_config = CerbosTestTlsConfig::new(hostname, temp_dir)?;
    let container = CerbosContainer::default()
        .with_image_tag("0.45.1")
        .with_config_path(&config_path)
        .with_sqlite_in_memory_storage()
        .with_tls_config(&tls_config)
        .start()
        .await?;
    let host = container.get_host().await?;
    let port = container.get_host_port_ipv4(3593).await?;
    let client_conf = CerbosClientOptions::new(CerbosEndpoint::HostPort(host.to_string(), port))
        .with_admin_credentials(ADMIN_USERNAME, ADMIN_PASSWORD)
        .with_tls_ca_cert_pem(tls_config.get_ca_cert());
    Ok((CerbosAdminClient::new(client_conf).await?, container))
}

#[cfg(all(feature = "testcontainers", feature = "admin"))]
#[tokio::test]
pub async fn test_admin_client_policies() -> Result<()> {
    let policies = HashMap::from([
        (
            "derived_roles.apatr_common_roles",
            "derived_roles/common_roles.yaml",
        ),
        ("derived_roles.alpha", "derived_roles/derived_roles_01.yaml"),
        ("derived_roles.beta", "derived_roles/derived_roles_02.yaml"),
        (
            "export_constants.bazqux",
            "export_constants/export_constants_01.yaml",
        ),
        (
            "export_variables.foobar",
            "export_variables/export_variables_01.yaml",
        ),
        (
            "principal.donald_duck.vdefault",
            "principal_policies/policy_02.yaml",
        ),
        (
            "principal.donald_duck.vdefault/acme",
            "principal_policies/policy_02_acme.yaml",
        ),
        (
            "principal.donald_duck.vdefault/acme.hr",
            "principal_policies/policy_02_acme.hr.yaml",
        ),
        (
            "resource.leave_request.v20210210",
            "resource_policies/policy_01.yaml",
        ),
        (
            "resource.leave_request.vdefault",
            "resource_policies/policy_05.yaml",
        ),
        (
            "resource.leave_request.vdefault/acme",
            "resource_policies/policy_05_acme.yaml",
        ),
        (
            "resource.leave_request.vdefault/acme.hr",
            "resource_policies/policy_05_acme.hr.yaml",
        ),
        (
            "resource.leave_request.vdefault/acme.hr.uk",
            "resource_policies/policy_05_acme.hr.uk.yaml",
        ),
    ]);

    let temp_dir = tempfile::TempDir::new()?;
    let (mut client, container) = async_tls_client(&temp_dir).await?;
    add_or_update_policies(&mut client, &policies).await?;
    list_policies(&mut client, &policies).await?;
    inspect_policies(&mut client).await?;
    container.stop().await
}
#[cfg(all(feature = "testcontainers", feature = "admin"))]
#[tokio::test]
async fn test_audit_log() -> Result<()> {
    use cerbos::genpb::cerbos::request::v1::{
        list_audit_log_entries_request::Kind, ListAuditLogEntriesRequest,
    };
    let temp_dir = tempfile::TempDir::new()?;
    let (mut client, container) = async_tls_client(&temp_dir).await?;
    let request = ListAuditLogEntriesRequest::new()
        .with_log_entries_kind(Kind::Access)
        .with_tail(10_000);
    let response = client.audit_logs(request).await;
    assert!(response.is_err());
    let request = ListAuditLogEntriesRequest {
        kind: 100,
        filter: None,
    }
    .with_tail(100);
    let response = client.audit_logs(request).await;
    assert!(response.is_err());
    container.stop().await
}
#[cfg(all(feature = "testcontainers", feature = "admin"))]
#[tokio::test]
async fn test_admin_client_schemas() -> Result<()> {
    use cerbos::sdk::admin::model::SchemaSet;

    let schemas = HashMap::from([
        ("principal.json", "_schemas/principal.json"),
        (
            "resources/leave_request.json",
            "_schemas/resources/leave_request.json",
        ),
        (
            "resources/purchase_order.json",
            "_schemas/resources/purchase_order.json",
        ),
    ]);
    let temp_dir = tempfile::TempDir::new()?;
    let (mut client, container) = async_tls_client(&temp_dir).await?;

    let mut ss = SchemaSet::new();
    for (id, s) in schemas.iter() {
        let schema_path = get_test_data_path(&["policies", s]);
        ss.add_schema_from_file(schema_path, *id)?;
    }
    client.add_or_update_schema(&ss).await?;
    let result = client.list_schemas().await?;
    assert!(eq(result, schemas.into_keys()));
    container.stop().await
}
async fn add_or_update_policies(
    client: &mut cerbos::sdk::admin::CerbosAdminClient,
    policies: &HashMap<&'static str, &'static str>,
) -> Result<()> {
    let mut ps = PolicySet::new();

    for p in policies.values() {
        let policy_path = get_test_data_path(&["policies", p]);
        ps.add_policy_from_file(policy_path)?;
    }
    client.add_or_update_policy(&ps).await
}
fn eq<A: Into<String>, B: Into<String>>(
    a: impl IntoIterator<Item = A>,
    b: impl IntoIterator<Item = B>,
) -> bool {
    let a: HashSet<_> = a.into_iter().map(Into::into).collect();
    let b: HashSet<_> = b.into_iter().map(Into::into).collect();
    a == b
}
async fn list_policies(
    client: &mut cerbos::sdk::admin::CerbosAdminClient,
    policies: &HashMap<&'static str, &'static str>,
) -> Result<()> {
    let ps = client.list_policies(None).await?;
    assert!(eq(ps, policies.keys().cloned()), "None filter");
    let fo = FilterOptions::new().with_scope_regexp("acme");
    let ps = client.list_policies(Some(fo.clone())).await?;
    assert!(eq(
        [
            "principal.donald_duck.vdefault/acme",
            "principal.donald_duck.vdefault/acme.hr",
            "resource.leave_request.vdefault/acme",
            "resource.leave_request.vdefault/acme.hr",
            "resource.leave_request.vdefault/acme.hr.uk",
        ],
        ps
    ));

    let fo = FilterOptions::new().with_name_regexp("leave_req");
    let ps = client.list_policies(Some(fo.clone())).await?;
    assert!(eq(
        [
            "resource.leave_request.v20210210",
            "resource.leave_request.vdefault",
            "resource.leave_request.vdefault/acme",
            "resource.leave_request.vdefault/acme.hr",
            "resource.leave_request.vdefault/acme.hr.uk",
        ],
        ps
    ));
    let fo = FilterOptions::new().with_version_regexp("\\d+");
    let ps = client.list_policies(Some(fo.clone())).await?;
    assert!(eq(["resource.leave_request.v20210210"], ps));

    let fo = FilterOptions::new()
        .with_name_regexp(".*")
        .with_scope_regexp(".*")
        .with_version_regexp("def");
    let ps = client.list_policies(Some(fo.clone())).await?;
    assert!(eq(
        [
            "principal.donald_duck.vdefault",
            "principal.donald_duck.vdefault/acme",
            "principal.donald_duck.vdefault/acme.hr",
            "resource.leave_request.vdefault",
            "resource.leave_request.vdefault/acme",
            "resource.leave_request.vdefault/acme.hr",
            "resource.leave_request.vdefault/acme.hr.uk"
        ],
        ps
    ));
    Ok(())
}
async fn inspect_policies(client: &mut cerbos::sdk::admin::CerbosAdminClient) -> Result<()> {
    struct TestCase {
        options: Option<FilterOptions>,
        want: HashMap<&'static str, Vec<&'static str>>,
    }
    let test_cases: HashMap<&str, TestCase> = vec![
        (
            "NoFilter",
            TestCase {
                options: None,
                want: [
                    ("principal.donald_duck.vdefault", vec!["*"]),
                    ("principal.donald_duck.vdefault/acme", vec!["*"]),
                    ("principal.donald_duck.vdefault/acme.hr", vec!["view:*"]),
                    (
                        "resource.leave_request.v20210210",
                        vec![
                            "*",
                            "approve",
                            "create",
                            "defer",
                            "delete",
                            "remind",
                            "view",
                            "view:*",
                            "view:public",
                        ],
                    ),
                    ("resource.leave_request.vdefault", vec!["*"]),
                    (
                        "resource.leave_request.vdefault/acme",
                        vec!["create", "view:public"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr",
                        vec!["approve", "defer", "delete", "view:*"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr.uk",
                        vec!["defer", "delete"],
                    ),
                ]
                .into_iter()
                .collect(),
            },
        ),
        (
            "NameRegexp",
            TestCase {
                options: Some(FilterOptions::new().with_name_regexp("leave_req")),
                want: [
                    (
                        "resource.leave_request.v20210210",
                        vec![
                            "*",
                            "approve",
                            "create",
                            "defer",
                            "delete",
                            "remind",
                            "view",
                            "view:*",
                            "view:public",
                        ],
                    ),
                    ("resource.leave_request.vdefault", vec!["*"]),
                    (
                        "resource.leave_request.vdefault/acme",
                        vec!["create", "view:public"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr",
                        vec!["approve", "defer", "delete", "view:*"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr.uk",
                        vec!["defer", "delete"],
                    ),
                ]
                .into_iter()
                .collect(),
            },
        ),
        (
            "ScopeRegexp",
            TestCase {
                options: Some(FilterOptions::new().with_scope_regexp("acme")),
                want: [
                    ("principal.donald_duck.vdefault/acme", vec!["*"]),
                    ("principal.donald_duck.vdefault/acme.hr", vec!["view:*"]),
                    (
                        "resource.leave_request.vdefault/acme",
                        vec!["create", "view:public"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr",
                        vec!["approve", "defer", "delete", "view:*"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr.uk",
                        vec!["defer", "delete"],
                    ),
                ]
                .into_iter()
                .collect(),
            },
        ),
        (
            "VersionRegexp",
            TestCase {
                options: Some(FilterOptions::new().with_version_regexp(r"\d+")),
                want: [(
                    "resource.leave_request.v20210210",
                    vec![
                        "*",
                        "approve",
                        "create",
                        "defer",
                        "delete",
                        "remind",
                        "view",
                        "view:*",
                        "view:public",
                    ],
                )]
                .into_iter()
                .collect(),
            },
        ),
        (
            "AllRegexp",
            TestCase {
                options: Some(
                    FilterOptions::new()
                        .with_name_regexp(".*")
                        .with_scope_regexp(".*")
                        .with_version_regexp("def"),
                ),
                want: [
                    ("principal.donald_duck.vdefault", vec!["*"]),
                    ("principal.donald_duck.vdefault/acme", vec!["*"]),
                    ("principal.donald_duck.vdefault/acme.hr", vec!["view:*"]),
                    ("resource.leave_request.vdefault", vec!["*"]),
                    (
                        "resource.leave_request.vdefault/acme",
                        vec!["create", "view:public"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr",
                        vec!["approve", "defer", "delete", "view:*"],
                    ),
                    (
                        "resource.leave_request.vdefault/acme.hr.uk",
                        vec!["defer", "delete"],
                    ),
                ]
                .into_iter()
                .collect(),
            },
        ),
        (
            "PolicyIDs",
            TestCase {
                options: Some(
                    FilterOptions::new()
                        .with_policy_ids(vec!["resource.leave_request.v20210210".to_string()]),
                ),
                want: [(
                    "resource.leave_request.v20210210",
                    vec![
                        "*",
                        "approve",
                        "create",
                        "defer",
                        "delete",
                        "remind",
                        "view",
                        "view:*",
                        "view:public",
                    ],
                )]
                .into_iter()
                .collect(),
            },
        ),
    ]
    .into_iter()
    .collect();

    for (name, tc) in test_cases {
        let have = client.inspect_policies(tc.options).await?;
        assert!(!have.results.is_empty(), "{name} test case results empty");
        for (fqn, actions) in tc.want {
            assert!(
                have.results.contains_key(fqn),
                "{name} test case result no fqn: {fqn}"
            );
            assert!(
                eq(&have.results[fqn].actions, actions),
                "{name} test case results mismtach"
            );
        }
    }
    Ok(())
}
#[test]
pub fn test_google_protobuf_value_de() {
    use google::protobuf::{value::Kind, Value};
    let v: Value = serde_json::from_str("42").unwrap();

    assert!(matches!(v.kind, Some(Kind::NumberValue(42.0))));
}