Struct ExactSchemaMatcher 

pub struct ExactSchemaMatcher<T> { /* private fields */ }

Available on crate feature prost only.

A SchemaMatcher which expects all incoming schemas to match exactly one string for the given message type

use hedwig::validators::prost::{ExactSchemaMatcher, SchemaMatcher, SchemaMismatchError};

struct MyMessage {
    // ...
}
let schema = "messages/my-message/my-schema-v1.proto";

let my_matcher = ExactSchemaMatcher::<MyMessage>::new(schema);

assert_eq!(Ok(()), my_matcher.try_match_schema(schema));

let bad_schema = "messages/my-message/my-schema-v2.proto";
assert_eq!(
    Err(SchemaMismatchError::new::<MyMessage>(
        schema,
        bad_schema.to_owned()
    )),
    my_matcher.try_match_schema(bad_schema)
);

Implementations

impl<T> ExactSchemaMatcher<T>

pub fn new(expected_schema: &'static str) -> Self

Create a new schema matcher with the given expected schema

Trait Implementations

impl<T> SchemaMatcher<T> for ExactSchemaMatcher<T>

type InvalidSchemaError = SchemaMismatchError

The error returned when a given schema does not match the message type

fn try_match_schema(&self, schema: &str) -> Result<(), Self::InvalidSchemaError>

Check whether messages with the given schema are valid for deserializing into the trait’s generic message type.