Struct cloudevents::event::Event

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pub struct Event { /* private fields */ }
Expand description

Data structure that represents a CloudEvent. It provides methods to get the attributes through AttributesReader and write them through AttributesWriter. It also provides methods to read and write the event data.

You can build events using super::EventBuilder

use cloudevents::*;
use std::convert::TryInto;

// Create an event using the Default trait
let mut e = Event::default();
e.set_data(
    "application/json",
    serde_json::json!({"hello": "world"})
);

// Print the event id
println!("Event id: {}", e.id());

// Get the event data
let data: Option<Data> = e.data().cloned();
match data {
    Some(d) => println!("{}", d),
    None => println!("No event data")
}

Implementations§

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impl Event

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pub fn iter(&self) -> impl Iterator<Item = (&str, AttributeValue<'_>)>

Returns an Iterator for all the available CloudEvents Context attributes and extensions. Same as chaining Event::iter_attributes() and Event::iter_extensions()

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pub fn iter_attributes( &self, ) -> impl Iterator<Item = (&str, AttributeValue<'_>)>

Returns an Iterator for all the available CloudEvents Context attributes, excluding extensions. This iterator does not contain the data field.

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pub fn iter_extensions(&self) -> impl Iterator<Item = (&str, &ExtensionValue)>

Get all the extensions

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pub fn data(&self) -> Option<&Data>

Get data from this Event

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pub fn take_data(&mut self) -> (Option<String>, Option<Url>, Option<Data>)

Take (datacontenttype, dataschema, data) from this event, leaving these fields empty

use cloudevents::Event;
use serde_json::json;
use std::convert::Into;

let mut e = Event::default();
e.set_data("application/json", json!({}));

let (datacontenttype, dataschema, data) = e.take_data();
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pub fn set_data( &mut self, datacontenttype: impl Into<String>, data: impl Into<Data>, ) -> (Option<String>, Option<Data>)

Set data into this Event with the specified datacontenttype. Returns the previous value of datacontenttype and data.

use cloudevents::Event;
use serde_json::json;
use std::convert::Into;

let mut e = Event::default();
let (old_datacontenttype, old_data) = e.set_data("application/json", json!({}));
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pub fn set_data_unchecked(&mut self, data: impl Into<Data>) -> Option<Data>

Set data into this Event, without checking if there is a datacontenttype. Returns the previous value of data.

use cloudevents::Event;
use serde_json::json;
use std::convert::Into;

let mut e = Event::default();
let old_data = e.set_data_unchecked(json!({}));
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pub fn extension(&self, extension_name: &str) -> Option<&ExtensionValue>

Get the extension named extension_name

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pub fn set_extension<'name, 'event: 'name>( &'event mut self, extension_name: &'name str, extension_value: impl Into<ExtensionValue>, )

Set the extension named extension_name with extension_value

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pub fn remove_extension<'name, 'event: 'name>( &'event mut self, extension_name: &'name str, ) -> Option<ExtensionValue>

Remove the extension named extension_name

Trait Implementations§

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impl AttributesReader for Event

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fn id(&self) -> &str

Get the id.
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fn source(&self) -> &UriReference

Get the source.
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fn specversion(&self) -> SpecVersion

Get the specversion.
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fn ty(&self) -> &str

Get the type.
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fn datacontenttype(&self) -> Option<&str>

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fn dataschema(&self) -> Option<&Url>

Get the dataschema.
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fn subject(&self) -> Option<&str>

Get the subject.
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fn time(&self) -> Option<&DateTime<Utc>>

Get the time.
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impl AttributesWriter for Event

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fn set_id(&mut self, id: impl Into<String>) -> String

Set the id. Returns the previous value.
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fn set_source(&mut self, source: impl Into<UriReference>) -> UriReference

Set the source. Returns the previous value.
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fn set_type(&mut self, ty: impl Into<String>) -> String

Set the type. Returns the previous value.
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fn set_subject(&mut self, subject: Option<impl Into<String>>) -> Option<String>

Set the subject. Returns the previous value.
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fn set_time( &mut self, time: Option<impl Into<DateTime<Utc>>>, ) -> Option<DateTime<Utc>>

Set the time. Returns the previous value.
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fn set_datacontenttype( &mut self, datacontenttype: Option<impl Into<String>>, ) -> Option<String>

Set the datacontenttype. Returns the previous value.
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fn set_dataschema(&mut self, dataschema: Option<impl Into<Url>>) -> Option<Url>

Set the dataschema. Returns the previous value.
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impl BinaryDeserializer for Event

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fn deserialize_binary<R: Sized, V: BinarySerializer<R>>( self, visitor: V, ) -> Result<R>

Deserialize the message to BinarySerializer.
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fn into_event(self) -> Result<Event>

Convert this Message to Event.
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impl Clone for Event

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fn clone(&self) -> Event

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 Event

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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 Event

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fn default() -> Self

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

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fn deserialize<D>( deserializer: D, ) -> Result<Self, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for Event

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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 From<Event> for EventBuilder

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fn from(event: Event) -> Self

Converts to this type from the input type.
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impl From<Event> for EventBuilder

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fn from(event: Event) -> Self

Converts to this type from the input type.
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impl PartialEq for Event

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fn eq(&self, other: &Event) -> 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 Event

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fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuredDeserializer for Event

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fn deserialize_structured<R, V: StructuredSerializer<R>>( self, visitor: V, ) -> Result<R>

Deserialize the message to StructuredSerializer.
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fn into_event(self) -> Result<Event>

Convert this Message to Event.
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impl Eq for Event

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impl StructuralPartialEq for Event

Auto Trait Implementations§

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impl Freeze for Event

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impl RefUnwindSafe for Event

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impl Send for Event

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impl Sync for Event

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impl Unpin for Event

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impl UnwindSafe for Event

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
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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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,