Struct async_nats::jetstream::consumer::pull::Config

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pub struct Config {
Show 23 fields pub durable_name: Option<String>, pub name: Option<String>, pub description: Option<String>, pub deliver_policy: DeliverPolicy, pub ack_policy: AckPolicy, pub ack_wait: Duration, pub max_deliver: i64, pub filter_subject: String, pub filter_subjects: Vec<String>, pub replay_policy: ReplayPolicy, pub rate_limit: u64, pub sample_frequency: u8, pub max_waiting: i64, pub max_ack_pending: i64, pub headers_only: bool, pub max_batch: i64, pub max_bytes: i64, pub max_expires: Duration, pub inactive_threshold: Duration, pub num_replicas: usize, pub memory_storage: bool, pub metadata: HashMap<String, String>, pub backoff: Vec<Duration>,
}

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§durable_name: Option<String>

Setting durable_name to Some(...) will cause this consumer to be “durable”. This may be a good choice for workloads that benefit from the JetStream server or cluster remembering the progress of consumers for fault tolerance purposes. If a consumer crashes, the JetStream server or cluster will remember which messages the consumer acknowledged. When the consumer recovers, this information will allow the consumer to resume processing where it left off. If you’re unsure, set this to Some(...).

Setting durable_name to None will cause this consumer to be “ephemeral”. This may be a good choice for workloads where you don’t need the JetStream server to remember the consumer’s progress in the case of a crash, such as certain “high churn” workloads or workloads where a crashed instance is not required to recover.

§name: Option<String>

A name of the consumer. Can be specified for both durable and ephemeral consumers.

§description: Option<String>

A short description of the purpose of this consumer.

§deliver_policy: DeliverPolicy

Allows for a variety of options that determine how this consumer will receive messages

§ack_policy: AckPolicy

How messages should be acknowledged

§ack_wait: Duration

How long to allow messages to remain un-acknowledged before attempting redelivery

§max_deliver: i64

Maximum number of times a specific message will be delivered. Use this to avoid poison pill messages that repeatedly crash your consumer processes forever.

§filter_subject: String

When consuming from a Stream with many subjects, or wildcards, this selects only specific incoming subjects. Supports wildcards.

§filter_subjects: Vec<String>

Fulfills the same role as Config::filter_subject, but allows filtering by many subjects.

§replay_policy: ReplayPolicy

Whether messages are sent as quickly as possible or at the rate of receipt

§rate_limit: u64

The rate of message delivery in bits per second

§sample_frequency: u8

What percentage of acknowledgments should be samples for observability, 0-100

§max_waiting: i64

The maximum number of waiting consumers.

§max_ack_pending: i64

The maximum number of unacknowledged messages that may be in-flight before pausing sending additional messages to this consumer.

§headers_only: bool

Only deliver headers without payloads.

§max_batch: i64

Maximum size of a request batch

§max_bytes: i64

Maximum value of request max_bytes

§max_expires: Duration

Maximum value for request expiration

§inactive_threshold: Duration

Threshold for consumer inactivity

§num_replicas: usize

Number of consumer replicas

§memory_storage: bool

Force consumer to use memory storage.

§metadata: HashMap<String, String>§backoff: Vec<Duration>

Custom backoff for missed acknowledgments.

Trait Implementations§

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impl Clone for Config

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fn clone(&self) -> Config

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Config

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

Formats the value using the given formatter. Read more
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impl Default for Config

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fn default() -> Config

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for Config

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl From<OrderedConfig> for Config

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fn from(config: OrderedConfig) -> Self

Converts to this type from the input type.
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impl FromConsumer for Config

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impl IntoConsumerConfig for &Config

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impl IntoConsumerConfig for Config

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impl PartialEq for Config

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Eq for Config

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impl StructuralPartialEq for Config

Auto Trait Implementations§

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impl Freeze for Config

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impl RefUnwindSafe for Config

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impl Send for Config

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impl Sync for Config

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impl Unpin for Config

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impl UnwindSafe for Config

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

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where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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where U: From<T>,

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Calls U::from(self).

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type Output = T

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where T: Clone,

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type Error = Infallible

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