alien_core/bindings/
sandbox.rs

1//! Sandbox binding definitions.
2//!
3//! Carries what a provider needs to reach the durable parent and create sandboxes inside it.
4//! Sandbox identity is never in here — sandboxes are created at runtime and the provider is the
5//! record, so a binding describes the parent only.
6
7use super::BindingValue;
8use crate::{EgressPolicy, SandboxEgress};
9use serde::{Deserialize, Serialize};
10
11/// Represents a sandbox binding for creating and reaching sandboxes.
12///
13/// Service tags are prefixed with `sandbox-` because serde selects the variant on the `service`
14/// field alone. An unprefixed `local` would deserialize as another resource's local binding by
15/// silently dropping the fields that differ.
16#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
17#[serde(tag = "service")]
18pub enum SandboxBinding {
19    /// AWS Lambda MicroVM sandboxes
20    #[serde(rename = "sandbox-aws")]
21    Aws(AwsSandboxBinding),
22    /// Azure Container Apps Sandboxes
23    #[serde(rename = "sandbox-azure")]
24    Azure(AzureSandboxBinding),
25    /// GCP Agent Platform sandboxes, created under a durable Agent Engine
26    #[serde(rename = "sandbox-gcp-agent-platform")]
27    GcpAgentPlatform(GcpAgentPlatformSandboxBinding),
28    /// Sandbox pods under a sandboxed runtime class
29    #[serde(rename = "sandbox-kubernetes")]
30    Kubernetes(KubernetesSandboxBinding),
31    /// Local Docker sandboxes managed by the local sandbox manager
32    #[serde(rename = "sandbox-local")]
33    Local(LocalSandboxBinding),
34}
35
36/// Gateway handoff, or a policy-only binding from deployments without a gateway.
37/// Policy-only bindings remain readable but cannot enforce per-sandbox changes.
38#[derive(Debug, Clone, PartialEq, Eq, Serialize)]
39#[serde(untagged)]
40pub enum SandboxEgressBinding {
41    /// Complete gateway configuration from the deployment controller.
42    Gateway(SandboxEgressGateway),
43    /// Legacy declaration; no runtime enforcement capability is implied.
44    Policy(SandboxEgress),
45    /// Default policy for a new Internet declaration, retained in controller state.
46    Defaults {
47        #[serde(rename = "defaultPolicy")]
48        default_policy: EgressPolicy,
49    },
50}
51
52impl SandboxEgressBinding {
53    /// Declaration used for validation before any backend call.
54    pub fn declaration(&self) -> &SandboxEgress {
55        match self {
56            Self::Gateway(_) => &SandboxEgress::Internet,
57            Self::Policy(value) => value,
58            Self::Defaults { .. } => &SandboxEgress::Internet,
59        }
60    }
61    /// Default runtime policy for an Internet declaration.
62    pub fn default_policy(&self) -> Option<&EgressPolicy> {
63        match self {
64            Self::Defaults { default_policy } => Some(default_policy),
65            _ => None,
66        }
67    }
68    /// Gateway configuration, absent on older deployments.
69    pub fn gateway(&self) -> Option<&SandboxEgressGateway> {
70        match self {
71            Self::Gateway(value) => Some(value),
72            Self::Policy(_) | Self::Defaults { .. } => None,
73        }
74    }
75}
76
77impl<'de> Deserialize<'de> for SandboxEgressBinding {
78    fn deserialize<D: serde::Deserializer<'de>>(
79        deserializer: D,
80    ) -> std::result::Result<Self, D::Error> {
81        #[derive(Deserialize)]
82        #[serde(untagged)]
83        enum Input {
84            Gateway(SandboxEgressGateway),
85            Policy(SandboxEgress),
86            Defaults {
87                #[serde(rename = "defaultPolicy")]
88                default_policy: EgressPolicy,
89            },
90        }
91        Ok(match Input::deserialize(deserializer)? {
92            Input::Gateway(value) => Self::Gateway(value),
93            Input::Policy(value) => Self::Policy(value),
94            Input::Defaults { default_policy } => Self::Defaults { default_policy },
95        })
96    }
97}
98impl From<&crate::Sandbox> for SandboxEgressBinding {
99    fn from(value: &crate::Sandbox) -> Self {
100        match &value.default_policy {
101            Some(default_policy) => Self::Defaults {
102                default_policy: default_policy.clone(),
103            },
104            None => Self::Policy(value.egress.clone()),
105        }
106    }
107}
108
109impl From<SandboxEgress> for SandboxEgressBinding {
110    fn from(value: SandboxEgress) -> Self {
111        Self::Policy(value)
112    }
113}
114
115/// Public binding metadata. Private key material never belongs in a binding.
116#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
117#[serde(rename_all = "camelCase", deny_unknown_fields)]
118pub struct SandboxEgressGateway {
119    /// Linked gateway Container binding; its internal URL is resolved at runtime.
120    pub container: String,
121    /// Deployment prefix and resource id.
122    pub audience: String,
123    /// Vault locator for the deployment's signing key.
124    pub signing_key: SandboxEgressSigningKey,
125    /// Key id published in the gateway's rotation set.
126    pub kid: String,
127    /// Trust root for an admin listener using a deployment-issued TLS certificate.
128    #[serde(default, skip_serializing_if = "Option::is_none")]
129    pub admin_ca_pem: Option<String>,
130    /// Replicas that must each acknowledge a policy write. Absent when the gateway
131    /// replicates writes itself behind one admin address.
132    #[serde(default, skip_serializing_if = "Option::is_none")]
133    pub replicas: Option<SandboxEgressReplicas>,
134}
135
136/// Ready gateway replicas a policy write must reach.
137#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
138#[serde(rename_all = "camelCase", deny_unknown_fields)]
139pub struct SandboxEgressReplicas {
140    /// Name that resolves, through the workload's DNS search path, to every ready replica.
141    pub dns: String,
142    /// Admin port on each replica.
143    pub port: u16,
144    /// Replicas the gateway runs. A write refuses when fewer are resolvable.
145    pub count: u32,
146}
147
148/// Management-only vault reference for an Ed25519 PKCS#8 key.
149#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
150#[serde(rename_all = "camelCase", deny_unknown_fields)]
151pub struct SandboxEgressSigningKey {
152    /// Name of the vault binding, normally `secrets`.
153    pub vault: String,
154    /// Secret name, normally `sandbox-egress-signing-key`.
155    pub key: String,
156}
157
158/// AWS sandbox binding configuration.
159#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
160#[serde(rename_all = "camelCase")]
161pub struct AwsSandboxBinding {
162    /// Default runtime policy when create omits one.
163    #[serde(default, skip_serializing_if = "Option::is_none")]
164    pub default_policy: Option<EgressPolicy>,
165    /// Declared internet access. Absent only in bindings created by older releases.
166    #[serde(default, skip_serializing_if = "Option::is_none")]
167    pub egress: Option<SandboxEgressBinding>,
168    /// MicroVM image ARN that scopes the sandboxes this binding creates
169    pub image_arn: BindingValue<String>,
170    /// Image version. Sandboxes are enumerated by image and version together, so a rolled
171    /// version remains a cleanup scope until its own MicroVMs are gone.
172    pub image_version: BindingValue<String>,
173    /// Region the MicroVMs run in
174    pub region: BindingValue<String>,
175    /// Execution role attached to each MicroVM, distinct from the workload's own role
176    #[serde(skip_serializing_if = "Option::is_none")]
177    pub execution_role_arn: Option<BindingValue<String>>,
178    /// Egress connectors every sandbox is started with.
179    ///
180    /// Carried rather than implied: a MicroVM started with no connector reaches the public
181    /// internet, so an empty list here is `allow`, not `deny`. The declared mode is realised by
182    /// which connector setup built, and the sandbox has to be started with it.
183    #[serde(default, skip_serializing_if = "Vec::is_empty")]
184    pub egress_connector_arns: Vec<BindingValue<String>>,
185    /// Ports a preview capability may be minted for.
186    ///
187    /// Carried because the token is what grants ingress: `CreateMicrovmAuthToken` mints access to
188    /// whatever port it is asked for, so "a port not listed here can never be exposed" is only
189    /// true if the declared list reaches the code that mints.
190    #[serde(default, skip_serializing_if = "Vec::is_empty")]
191    pub preview_ports: Vec<u16>,
192    /// Idle seconds after which a sandbox pauses, if the declaration asked for one.
193    #[serde(default, skip_serializing_if = "Option::is_none")]
194    pub idle_pause_seconds: Option<u32>,
195    /// Wall-clock ceiling on a sandbox, if the declaration asked for one.
196    ///
197    /// Enforced by Lambda rather than by us: `RunMicrovm` takes it as
198    /// `maximumDurationInSeconds` and terminates the MicroVM when it elapses.
199    #[serde(default, skip_serializing_if = "Option::is_none")]
200    pub max_lifetime_seconds: Option<u32>,
201    /// Whether the declaration asked for open egress.
202    ///
203    /// Carried because an empty connector list cannot otherwise be read: a MicroVM started with
204    /// no connector reaches the internet, so a `deny` binding stripped of its connectors would be
205    /// indistinguishable from `allow`. Absent means `deny`, which is the answer that fails closed.
206    #[serde(default, skip_serializing_if = "std::ops::Not::not")]
207    pub allow_egress: bool,
208}
209
210/// Azure sandbox binding configuration.
211#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
212#[serde(rename_all = "camelCase")]
213pub struct AzureSandboxBinding {
214    /// Default runtime policy when create omits one.
215    #[serde(default, skip_serializing_if = "Option::is_none")]
216    pub default_policy: Option<EgressPolicy>,
217    /// Sandbox group that scopes every sandbox, image, snapshot and secret
218    pub sandbox_group: BindingValue<String>,
219    /// ADC data-plane endpoint, which is separate from the ARM control plane
220    pub data_plane_endpoint: BindingValue<String>,
221    /// Region the sandbox group lives in; selects the per-region ADC endpoint
222    pub region: BindingValue<String>,
223    /// Resource group the sandbox group sits in. The data-plane path is scoped by it, and the
224    /// Azure client config does not carry one.
225    pub resource_group: BindingValue<String>,
226    /// Outbound policy every sandbox is created with, as declared.
227    ///
228    /// Carried whole rather than as a flag: the data plane's default action is `Allow`, so a
229    /// sandbox created without a policy is an open one, and a hostname list has no boolean to
230    /// travel in.
231    pub egress: SandboxEgressBinding,
232    /// Idle seconds after which a sandbox pauses, if the declaration asked for one.
233    ///
234    /// Carried because the data plane takes it at create and nowhere else: a policy that does not
235    /// travel with the create body is a declaration the sandbox never hears about.
236    #[serde(default, skip_serializing_if = "Option::is_none")]
237    pub idle_pause_seconds: Option<u32>,
238    /// Catalog name or registry image every sandbox is created from, as `code` declares it. A
239    /// registry image is resolved by label to the disk image the controller built, so the value
240    /// stays one a setup package can render.
241    pub disk_image: BindingValue<String>,
242    /// Sandbox ceilings in the data plane's own units, from the declaration. Optional because a
243    /// binding from an earlier release carries none — a required field would fail to deserialize
244    /// on an already-running deployment. Absent takes the data plane's own default.
245    #[serde(default, skip_serializing_if = "Option::is_none")]
246    pub cpu: Option<BindingValue<String>>,
247    #[serde(default, skip_serializing_if = "Option::is_none")]
248    pub memory: Option<BindingValue<String>>,
249    #[serde(default, skip_serializing_if = "Option::is_none")]
250    pub disk: Option<BindingValue<String>>,
251}
252
253/// GCP Agent Platform sandbox binding configuration.
254///
255/// Sandboxes have a durable parent to address: an Agent Engine provisioned at deploy and reached
256/// through a regional endpoint.
257#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
258#[serde(rename_all = "camelCase")]
259pub struct GcpAgentPlatformSandboxBinding {
260    /// Default runtime policy when create omits one.
261    #[serde(default, skip_serializing_if = "Option::is_none")]
262    pub default_policy: Option<EgressPolicy>,
263    /// Declared internet access. Absent only in bindings created by older releases.
264    #[serde(default, skip_serializing_if = "Option::is_none")]
265    pub egress: Option<SandboxEgressBinding>,
266    /// Agent Engine that parents every sandbox. Sandboxes are created and enumerated under it,
267    /// so a binding without it can neither reach nor reap them.
268    pub engine: BindingValue<String>,
269    /// Template every sandbox is created from. It carries the image digest, the ceilings and the
270    /// egress rules, so a sandbox created without it runs an unpinned image with none applied.
271    pub template: BindingValue<String>,
272    /// Region selecting the regional aiplatform endpoint. The engine is regional with no global
273    /// alias, so the endpoint cannot be derived without it.
274    pub region: BindingValue<String>,
275    /// Seconds a sandbox may live, from the declaration. Carried only when one was declared; an
276    /// absent value takes the service default, which is why it is not defaulted here.
277    #[serde(default, skip_serializing_if = "Option::is_none")]
278    pub max_lifetime_seconds: Option<u32>,
279    /// Whether the declaration asked for open egress. The template enforces the policy; this lets a
280    /// reader that never sees the template tell `allow` from `deny`. Absent means `deny`.
281    #[serde(default)]
282    pub allow_egress: bool,
283}
284
285/// Kubernetes sandbox binding configuration.
286#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
287#[serde(rename_all = "camelCase")]
288pub struct KubernetesSandboxBinding {
289    /// Default runtime policy when create omits one.
290    #[serde(default, skip_serializing_if = "Option::is_none")]
291    pub default_policy: Option<EgressPolicy>,
292    /// Declared internet access. Absent only in bindings created by older releases.
293    #[serde(default, skip_serializing_if = "Option::is_none")]
294    pub egress: Option<SandboxEgressBinding>,
295    /// Namespace sandbox pods are created in
296    pub namespace: BindingValue<String>,
297    /// Runtime class every sandbox pod must carry, such as `gvisor` or `kata`
298    pub runtime_class: BindingValue<String>,
299    /// Label selector identifying this sandbox's pods, used for enumeration and reaping
300    pub selector: BindingValue<String>,
301    /// Sandbox broker served by the operator. Claiming a pod is a `PATCH` on pods, which must
302    /// not reach the application.
303    pub broker_url: BindingValue<String>,
304    /// Secret holding the capability signing key, by name. The binding names it; only the
305    /// broker can read it.
306    pub key_name: BindingValue<String>,
307    /// Where Kubernetes mounted the pod's own ServiceAccount token. A path, not a secret: the
308    /// platform put the file there and the broker verifies it with a `TokenReview`.
309    pub token_path: BindingValue<String>,
310}
311
312/// Local sandbox binding configuration.
313#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
314#[serde(rename_all = "camelCase")]
315pub struct LocalSandboxBinding {
316    /// Default runtime policy when create omits one.
317    #[serde(default, skip_serializing_if = "Option::is_none")]
318    pub default_policy: Option<EgressPolicy>,
319    /// Declared internet access. Absent only in bindings created by older releases.
320    #[serde(default, skip_serializing_if = "Option::is_none")]
321    pub egress: Option<SandboxEgressBinding>,
322    /// Loopback endpoint of the local sandbox manager
323    pub manager_url: BindingValue<String>,
324    /// Key scoping this binding's sandboxes within the manager
325    pub sandbox_key: BindingValue<String>,
326    /// File holding the route's bearer token. A locator, not the token: a binding is
327    /// serialized into the workload's environment, and a secret there is a secret in state.
328    pub token_path: BindingValue<String>,
329}
330
331impl SandboxBinding {
332    /// Egress handoff, including declarations stored by earlier releases.
333    pub fn egress(&self) -> Option<&SandboxEgressBinding> {
334        match self {
335            Self::Aws(value) => value.egress.as_ref(),
336            Self::Azure(value) => Some(&value.egress),
337            Self::GcpAgentPlatform(value) => value.egress.as_ref(),
338            Self::Kubernetes(value) => value.egress.as_ref(),
339            Self::Local(value) => value.egress.as_ref(),
340        }
341    }
342    /// Default runtime policy, including the released allowDomains alias.
343    pub fn default_policy(&self) -> Option<&EgressPolicy> {
344        let explicit = match self {
345            Self::Aws(value) => value.default_policy.as_ref(),
346            Self::Azure(value) => value.default_policy.as_ref(),
347            Self::GcpAgentPlatform(value) => value.default_policy.as_ref(),
348            Self::Kubernetes(value) => value.default_policy.as_ref(),
349            Self::Local(value) => value.default_policy.as_ref(),
350        };
351        explicit.or_else(|| self.egress().and_then(SandboxEgressBinding::default_policy))
352    }
353
354    /// Creates an AWS sandbox binding.
355    pub fn aws(
356        image_arn: impl Into<BindingValue<String>>,
357        image_version: impl Into<BindingValue<String>>,
358        region: impl Into<BindingValue<String>>,
359    ) -> Self {
360        Self::Aws(AwsSandboxBinding {
361            default_policy: None,
362            egress: None,
363            image_arn: image_arn.into(),
364            image_version: image_version.into(),
365            region: region.into(),
366            execution_role_arn: None,
367            egress_connector_arns: Vec::new(),
368            preview_ports: Vec::new(),
369            idle_pause_seconds: None,
370            max_lifetime_seconds: None,
371            allow_egress: false,
372        })
373    }
374
375    /// Creates an Azure sandbox binding.
376    pub fn azure(
377        sandbox_group: impl Into<BindingValue<String>>,
378        data_plane_endpoint: impl Into<BindingValue<String>>,
379        region: impl Into<BindingValue<String>>,
380        resource_group: impl Into<BindingValue<String>>,
381        disk_image: impl Into<BindingValue<String>>,
382        egress: SandboxEgress,
383        idle_pause_seconds: Option<u32>,
384    ) -> Self {
385        Self::Azure(AzureSandboxBinding {
386            default_policy: None,
387            sandbox_group: sandbox_group.into(),
388            data_plane_endpoint: data_plane_endpoint.into(),
389            region: region.into(),
390            resource_group: resource_group.into(),
391            egress: egress.into(),
392            idle_pause_seconds,
393            disk_image: disk_image.into(),
394            // Ceilings are set on the struct where a caller has them; a positional argument each
395            // would make this constructor ten wide for the case that rarely carries them.
396            cpu: None,
397            memory: None,
398            disk: None,
399        })
400    }
401
402    /// Creates a GCP Agent Platform binding from the legacy template switch.
403    /// Gateway-backed declarations must supply their explicit egress configuration.
404    pub fn gcp_agent_platform(
405        engine: impl Into<BindingValue<String>>,
406        template: impl Into<BindingValue<String>>,
407        region: impl Into<BindingValue<String>>,
408        max_lifetime_seconds: Option<u32>,
409        allow_egress: bool,
410    ) -> Self {
411        Self::GcpAgentPlatform(GcpAgentPlatformSandboxBinding {
412            default_policy: None,
413            egress: Some(
414                (if allow_egress {
415                    SandboxEgress::Allow
416                } else {
417                    SandboxEgress::None
418                })
419                .into(),
420            ),
421            engine: engine.into(),
422            template: template.into(),
423            region: region.into(),
424            max_lifetime_seconds,
425            allow_egress,
426        })
427    }
428
429    /// Creates a Kubernetes sandbox binding.
430    pub fn kubernetes(
431        namespace: impl Into<BindingValue<String>>,
432        runtime_class: impl Into<BindingValue<String>>,
433        selector: impl Into<BindingValue<String>>,
434        broker_url: impl Into<BindingValue<String>>,
435        key_name: impl Into<BindingValue<String>>,
436        token_path: impl Into<BindingValue<String>>,
437        egress: Option<SandboxEgress>,
438    ) -> Self {
439        Self::Kubernetes(KubernetesSandboxBinding {
440            default_policy: None,
441            egress: egress.map(Into::into),
442            namespace: namespace.into(),
443            runtime_class: runtime_class.into(),
444            selector: selector.into(),
445            broker_url: broker_url.into(),
446            key_name: key_name.into(),
447            token_path: token_path.into(),
448        })
449    }
450
451    /// Creates a local sandbox binding.
452    pub fn local(
453        manager_url: impl Into<BindingValue<String>>,
454        sandbox_key: impl Into<BindingValue<String>>,
455        token_path: impl Into<BindingValue<String>>,
456        egress: Option<SandboxEgress>,
457    ) -> Self {
458        Self::Local(LocalSandboxBinding {
459            default_policy: None,
460            egress: egress.map(Into::into),
461            manager_url: manager_url.into(),
462            sandbox_key: sandbox_key.into(),
463            token_path: token_path.into(),
464        })
465    }
466}
467
468#[cfg(test)]
469mod tests {
470    use super::*;
471    use crate::bindings::{ContainerBinding, KvBinding};
472
473    #[test]
474    fn every_variant_roundtrips() {
475        let bindings = vec![
476            SandboxBinding::aws(
477                "arn:aws:lambda:us-east-2:1:microvm-image:sbx",
478                "3",
479                "us-east-2",
480            ),
481            SandboxBinding::azure(
482                "sbg1",
483                "https://management.swedencentral.azuredevcompute.io",
484                "swedencentral",
485                "rg",
486                "ubuntu",
487                SandboxEgress::None,
488                None,
489            ),
490            SandboxBinding::gcp_agent_platform(
491                "projects/p/locations/us-central1/reasoningEngines/1",
492                "projects/p/locations/us-central1/sandboxTemplates/agent",
493                "us-central1",
494                Some(3600),
495                true,
496            ),
497            SandboxBinding::kubernetes(
498                "alien-sandboxes",
499                "gvisor",
500                "alien.dev/sandbox=agent",
501                "http://alien-operator.alien.svc:8080",
502                "alien-sandbox-agent-capability",
503                "/var/run/secrets/kubernetes.io/serviceaccount/token",
504                None,
505            ),
506            SandboxBinding::local(
507                "http://127.0.0.1:8931",
508                "agent",
509                "/state/sandbox-manager.token",
510                None,
511            ),
512        ];
513
514        for binding in bindings {
515            let json = serde_json::to_string(&binding).expect("serializes");
516            let restored: SandboxBinding = serde_json::from_str(&json).expect("deserializes");
517            assert_eq!(binding, restored, "roundtrip changed the binding: {json}");
518        }
519    }
520
521    /// The Agent Platform binding carries an egress-bearing template, so there is no safe default
522    /// for a missing required field: a binding stripped of one must fail to load rather than
523    /// deserialize into a sandbox with no image, no limits and open egress. `maxLifetimeSeconds` is
524    /// the one field that may be absent, and its absence must still parse.
525    #[test]
526    fn agent_platform_required_fields_have_no_default() {
527        let binding = SandboxBinding::gcp_agent_platform(
528            "projects/p/locations/us-central1/reasoningEngines/1",
529            "projects/p/locations/us-central1/sandboxTemplates/agent",
530            "us-central1",
531            Some(3600),
532            true,
533        );
534        let full = serde_json::to_value(&binding).expect("serializes");
535
536        for required in ["engine", "template", "region"] {
537            let mut stripped = full.clone();
538            stripped
539                .as_object_mut()
540                .expect("binding serializes as an object")
541                .remove(required)
542                .expect("the field is present before it is stripped");
543            serde_json::from_value::<SandboxBinding>(stripped)
544                .expect_err(&format!("a binding missing '{required}' must not load"));
545        }
546
547        let mut without_ttl = full;
548        without_ttl
549            .as_object_mut()
550            .expect("binding serializes as an object")
551            .remove("maxLifetimeSeconds")
552            .expect("the fixture set a ttl");
553        without_ttl
554            .as_object_mut()
555            .expect("binding serializes as an object")
556            .remove("allowEgress")
557            .expect("the fixture allowed egress");
558        without_ttl.as_object_mut().unwrap().remove("egress");
559        let restored: SandboxBinding = serde_json::from_value(without_ttl)
560            .expect("legacy binding without optional fields loads");
561        let SandboxBinding::GcpAgentPlatform(restored) = restored else {
562            panic!("the service tag must select Agent Platform");
563        };
564        assert_eq!(restored.max_lifetime_seconds, None);
565        assert!(!restored.allow_egress, "legacy bindings default to deny");
566        assert_eq!(
567            restored.egress, None,
568            "legacy bindings carry no explicit declaration"
569        );
570    }
571
572    #[test]
573    fn service_tags_are_prefixed_and_distinct() {
574        let tags: Vec<String> = vec![
575            SandboxBinding::aws("a", "1", "r"),
576            SandboxBinding::azure("g", "e", "r", "rg", "ubuntu", SandboxEgress::None, None),
577            SandboxBinding::gcp_agent_platform("e", "t", "us-central1", None, false),
578            SandboxBinding::kubernetes("n", "gvisor", "s", "http://op:8080", "k", "/t", None),
579            SandboxBinding::local("u", "k", "t", None),
580        ]
581        .iter()
582        .map(|binding| {
583            serde_json::to_value(binding).expect("serializes")["service"]
584                .as_str()
585                .expect("has a service tag")
586                .to_string()
587        })
588        .collect();
589
590        for tag in &tags {
591            assert!(tag.starts_with("sandbox-"), "tag '{tag}' is not namespaced");
592        }
593
594        let mut unique = tags.clone();
595        unique.sort();
596        unique.dedup();
597        assert_eq!(unique.len(), tags.len(), "duplicate service tags: {tags:?}");
598    }
599
600    /// The failure the bindings AGENTS.md warns about: with `tag = "service"`, serde picks the
601    /// variant on that field alone, so a shared tag lets one resource's binding deserialize as
602    /// another's by dropping the fields that differ.
603    #[test]
604    fn a_sandbox_binding_cannot_deserialize_as_another_resource() {
605        let json = serde_json::to_string(&SandboxBinding::local(
606            "http://127.0.0.1:8931",
607            "agent",
608            "/state/sandbox-manager.token",
609            None,
610        ))
611        .expect("serializes");
612
613        serde_json::from_str::<KvBinding>(&json)
614            .expect_err("a sandbox binding must not parse as a KV binding");
615        serde_json::from_str::<ContainerBinding>(&json)
616            .expect_err("a sandbox binding must not parse as a container binding");
617    }
618
619    #[test]
620    fn another_resource_binding_cannot_deserialize_as_a_sandbox() {
621        let json = serde_json::to_string(&ContainerBinding::local("api", "http://api.svc:8080"))
622            .expect("serializes");
623
624        serde_json::from_str::<SandboxBinding>(&json)
625            .expect_err("a container binding must not parse as a sandbox binding");
626    }
627}
alien_core/bindings/sandbox.rs

alien_core/bindings/
sandbox.rs
