Enum BindingSource 

pub enum BindingSource {
    Service {
        context: String,
    },
    Kv,
    KvInstance {
        capability: String,
    },
    ForeignService {
        capability: String,
        worker: String,
    },
    R2Instance {
        capability: String,
        jurisdiction: Option<String>,
    },
    RateLimitInstance {
        capability: String,
        limit: i64,
        period: i64,
    },
    Agent {
        class_name: String,
    },
    EventsFanout {
        class_name: String,
    },
}

What put a binding into a Worker’s wrangler.toml: the source a bynk.context.duplicate_binding diagnostic names.

Each variant’s doc also says whether a handler’s deps.env type exposes it on Workers (#1950, bynk_emit::emitter::wrangler::handler_bindings).

Variants

Service

A [[services]] Service Binding to another context’s Worker: a consumed context whose services the context calls (#1961 — consuming one for its types or events alone binds nothing), or one subscribing to an event it publishes. Handlers see a called context’s binding; never a subscriber’s, which only the events fan-out calls.

Fields

context: String

Kv

The [[kv_namespaces]] binding the cloudflare adapter’s Kv reads. Never seen by handlers: they reach KV through the WorkersKv provider, which takes the Worker’s env at compose time.

KvInstance

S4a (#1966): the [[kv_namespaces]] binding of a derived capability (capability Sessions = Kv), one per instance. Never seen by handlers: they reach it through the instance’s WorkersKv.

Fields

capability: String

ForeignService

Interop I5 (#1972): the [[services]] binding of a Service instance (capability Billing = Service @worker("legacy-billing")), a Service Binding to a Worker outside the project. Never seen by handlers: they reach it through the instance’s WorkersService.

Fields

capability: String

worker: String

R2Instance

P5 (#2323): the [[r2_buckets]] binding of an R2 instance (capability Archives = R2), one bucket per instance, pinned to jurisdiction when it names one. Never seen by handlers: they reach it through the instance’s WorkersR2.

Fields

capability: String

jurisdiction: Option<String>

RateLimitInstance

Standard-library P3 (#2342): the [[ratelimits]] binding of a RateLimit instance (capability LoginLimit = RateLimit @limit(100) @period(60.seconds)), allowing limit calls per key every period seconds. Never seen by handlers: they reach it through the instance’s WorkersRateLimit.

Fields

capability: String

limit: i64

period: i64

Agent

A [[durable_objects.bindings]] entry for one of the context’s agents. A handler that constructs an agent sees every local agent’s binding.

Fields

class_name: String

EventsFanout

The [[durable_objects.bindings]] entry for the events fan-out class of a context whose handlers emit. Never seen by handlers: they reach it through deps.__eventsDispatch.

Fields

class_name: String

Implementations

impl BindingSource

pub fn describe(&self) -> String

The source in a diagnostic’s words.

Trait Implementations

impl Clone for BindingSource

fn clone(&self) -> BindingSource

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BindingSource

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for BindingSource

fn eq(&self, other: &BindingSource) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for BindingSource

impl StructuralPartialEq for BindingSource