pub struct MetadataFilter {
    pub filter_labels: Vec<MetadataFilterLabelMatch>,
    pub filter_match_criteria: Option<String>,
}
Expand description

Opaque filter criteria used by load balancers to restrict routing configuration to a limited set of load balancing proxies. Proxies and sidecars involved in load balancing would typically present metadata to the load balancers that need to match criteria specified here. If a match takes place, the relevant configuration is made available to those proxies. For each metadataFilter in this list, if its filterMatchCriteria is set to MATCH_ANY, at least one of the filterLabels must match the corresponding label provided in the metadata. If its filterMatchCriteria is set to MATCH_ALL, then all of its filterLabels must match with corresponding labels provided in the metadata. An example for using metadataFilters would be: if load balancing involves Envoys, they receive routing configuration when values in metadataFilters match values supplied in of their XDS requests to loadbalancers.

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§filter_labels: Vec<MetadataFilterLabelMatch>

The list of label value pairs that must match labels in the provided metadata based on filterMatchCriteria This list must not be empty and can have at the most 64 entries.

§filter_match_criteria: Option<String>

Specifies how individual filter label matches within the list of filterLabels and contributes toward the overall metadataFilter match. Supported values are: - MATCH_ANY: at least one of the filterLabels must have a matching label in the provided metadata. - MATCH_ALL: all filterLabels must have matching labels in the provided metadata. Check the FilterMatchCriteria enum for the list of possible values.

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impl MetadataFilter

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pub fn filter_match_criteria(&self) -> &str

Returns the value of filter_match_criteria, or the default value if filter_match_criteria is unset.

Trait Implementations§

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impl Clone for MetadataFilter

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fn clone(&self) -> MetadataFilter

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 MetadataFilter

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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 MetadataFilter

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Message for MetadataFilter

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fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.
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fn clear(&mut self)

Clears the message, resetting all fields to their default.
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fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>
where B: BufMut, Self: Sized,

Encodes the message to a buffer. Read more
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fn encode_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message to a newly allocated buffer.
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fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>
where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer. Read more
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fn encode_length_delimited_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.
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fn decode<B>(buf: B) -> Result<Self, DecodeError>
where B: Buf, Self: Default,

Decodes an instance of the message from a buffer. Read more
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fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>
where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.
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fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>
where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self. Read more
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fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>
where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.
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impl PartialEq for MetadataFilter

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for MetadataFilter

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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

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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> From<T> for T

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Converts to this type from a reference to the input type.
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fn instrument(self, span: Span) -> Instrumented<Self>

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impl<T, U> Into<U> for 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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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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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

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Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

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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

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