fn verify_mutation_type(&self, mutations: &[RegistryMutation]) -> Vec<Error> {
        mutations
            .iter()
            .map(|m| {
                let key = &m.key;
                let latest = self
                    .get_last(key)
                    .filter(|registry_value| !registry_value.deletion_marker);
                match (Type::from_i32(m.mutation_type), latest) {
                    (None, _) => Err(Error::MalformedMessage(format!(
                        "Unknown mutation type {} for key {:?}.",
                        m.mutation_type, m.key
                    ))),
                    (Some(Type::Insert), None) => Ok(()),
                    (Some(Type::Insert), Some(_)) => Err(Error::KeyAlreadyPresent(key.to_vec())),
                    (Some(Type::Update), None) => Err(Error::KeyNotPresent(key.to_vec())),
                    (Some(Type::Update), Some(_)) => Ok(()),
                    (Some(Type::Delete), None) => Err(Error::KeyNotPresent(key.to_vec())),
                    (Some(Type::Delete), Some(_)) => Ok(()),
                    (Some(Type::Upsert), None) => Ok(()),
                    (Some(Type::Upsert), Some(_)) => Ok(()),
                }
            })
            .flat_map(Result::err)
            .collect()
    }
/// Verifies the implicit precondition corresponding to the mutation_type
/// field.
Verifies the implicit precondition corresponding to the mutation_type
field.
Verifies the implicit precondition corresponding to the mutation_type field .
fn verify_mutation_type(&self, mutations: &[RegistryMutation]) -> Vec<Error> {
        mutations
            .iter()
            .map(|m| {
                let key = &m.key;
                let latest = self
                    .get_last(key)
                    .filter(|registry_value| !registry_value.deletion_marker);
                match (Type::from_i32(m.mutation_type), latest) {
                    (None, _) => Err(Error::MalformedMessage(format!(
                        "Unknown mutation type {} for key {:?}.",
                        m.mutation_type, m.key
                    ))),
                    (Some(Type::Insert), None) => Ok(()),
                    (Some(Type::Insert), Some(_)) => Err(Error::KeyAlreadyPresent(key.to_vec())),
                    (Some(Type::Update), None) => Err(Error::KeyNotPresent(key.to_vec())),
                    (Some(Type::Update), Some(_)) => Ok(()),
                    (Some(Type::Delete), None) => Err(Error::KeyNotPresent(key.to_vec())),
                    (Some(Type::Delete), Some(_)) => Ok(()),
                    (Some(Type::Upsert), None) => Ok(()),
                    (Some(Type::Upsert), Some(_)) => Ok(()),
                }
            })
            .flat_map(Result::err)
            .collect()
    }
fn verify_mutation_type ( & self , mutations : & [ RegistryMutation ] ) -> Vec < Error > { mutations . iter ( ) . map ( | m | { let key = & m . key ; let latest = self . get_last ( key ) . filter ( | registry_value | ! registry_value . deletion_marker ) ; match ( Type :: from_i32 ( m . mutation_type ) , latest ) { ( None , _ ) => Err ( Error :: MalformedMessage ( format ! ( " " m mutation_type m key ) ) ) , ( Some ( Type :: Insert ) , None ) => Ok ( ( ) ) , ( Some ( Type :: Insert ) , Some ( _ ) ) => Err ( Error :: KeyAlreadyPresent ( key . to_vec ( ) ) ) , ( Some ( Type :: Update ) , None ) => Err ( Error :: KeyNotPresent ( key . to_vec ( ) ) ) , ( Some ( Type :: Update ) , Some ( _ ) ) => Ok ( ( ) ) , ( Some ( Type :: Delete ) , None ) => Err ( Error :: KeyNotPresent ( key . to_vec ( ) ) ) , ( Some ( Type :: Delete ) , Some ( _ ) ) => Ok ( ( ) ) , ( Some ( Type :: Upsert ) , None ) => Ok ( ( ) ) , ( Some ( Type :: Upsert ) , Some ( _ ) ) => Ok ( ( ) ) , } } ) . flat_map ( Result :: err ) . collect ( ) }
Verifies the implicit precondition corresponding to the mutation_type
field.
Verifies the implicit precondition corresponding to the mutation_type field .
&self
mutations
&[RegistryMutation]
&self
mutations
&[RegistryMutation]