Crate prost_protovalidate_types 

Generated Rust types for the buf.validate protobuf schema, built with prost and prost-reflect.

This crate provides:

• All message and enum types from buf/validate/validate.proto (e.g. FieldRules, MessageRules, OneofRules).
• A shared DESCRIPTOR_POOL containing the file descriptor set for runtime reflection.
• Extension traits for extracting constraint annotations from descriptors:
  • FieldConstraintsExt — buf.validate.field rules on a FieldDescriptor.
  • MessageConstraintsExt — buf.validate.message rules on a MessageDescriptor.
  • OneofConstraintsExt — buf.validate.oneof rules on a OneofDescriptor.
  • PredefinedConstraintsExt — buf.validate.predefined rules.
  • FieldConstraintsDynExt / MessageConstraintsDynExt — raw DynamicMessage access for the runtime validator.
• Typed helper functions for extension extraction with concrete error types: field_constraints_typed, message_constraints_typed, oneof_constraints_typed, predefined_constraints_typed.

Usage

Most users do not need this crate directly — the prost-protovalidate crate re-exports everything required for validation via its types module. Use this crate when you only need the generated types or descriptor pool without the evaluation engine.

Modules

bytes_rules

Nested message and enum types in BytesRules.

double_rules

Nested message and enum types in DoubleRules.

duration_rules

Nested message and enum types in DurationRules.

field_path_element

Nested message and enum types in FieldPathElement.

field_rules

Nested message and enum types in FieldRules.

fixed32_rules

Nested message and enum types in Fixed32Rules.

fixed64_rules

Nested message and enum types in Fixed64Rules.

float_rules

Nested message and enum types in FloatRules.

int32_rules

Nested message and enum types in Int32Rules.

int64_rules

Nested message and enum types in Int64Rules.

s_fixed32_rules

Nested message and enum types in SFixed32Rules.

s_fixed64_rules

Nested message and enum types in SFixed64Rules.

s_int32_rules

Nested message and enum types in SInt32Rules.

s_int64_rules

Nested message and enum types in SInt64Rules.

string_rules

Nested message and enum types in StringRules.

timestamp_rules

Nested message and enum types in TimestampRules.

u_int32_rules

Nested message and enum types in UInt32Rules.

u_int64_rules

Nested message and enum types in UInt64Rules.

Structs

AnyRules

AnyRules describe rules applied exclusively to the google.protobuf.Any well-known type.

BoolRules

BoolRules describes the rules applied to bool values. These rules may also be applied to the google.protobuf.BoolValue Well-Known-Type.

BytesRules

BytesRules describe the rules applied to bytes values. These rules may also be applied to the google.protobuf.BytesValue Well-Known-Type.

DoubleRules

DoubleRules describes the rules applied to double values. These rules may also be applied to the google.protobuf.DoubleValue Well-Known-Type.

DurationRules

DurationRules describe the rules applied exclusively to the google.protobuf.Duration well-known type.

EnumRules

EnumRules describe the rules applied to enum values.

FieldMaskRules

FieldMaskRules describe rules applied exclusively to the google.protobuf.FieldMask well-known type.

FieldPath

FieldPath provides a path to a nested protobuf field.

FieldPathElement

FieldPathElement provides enough information to nest through a single protobuf field.

FieldRules

FieldRules encapsulates the rules for each type of field. Depending on the field, the correct set should be used to ensure proper validations.

Fixed32Rules

Fixed32Rules describes the rules applied to fixed32 values.

Fixed64Rules

Fixed64Rules describes the rules applied to fixed64 values.

FloatRules

FloatRules describes the rules applied to float values. These rules may also be applied to the google.protobuf.FloatValue Well-Known-Type.

Int32Rules

Int32Rules describes the rules applied to int32 values. These rules may also be applied to the google.protobuf.Int32Value Well-Known-Type.

Int64Rules

Int64Rules describes the rules applied to int64 values. These rules may also be applied to the google.protobuf.Int64Value Well-Known-Type.

MapRules

MapRules describe the rules applied to map values.

MessageOneofRule

MessageRules

MessageRules represents validation rules that are applied to the entire message. It includes disabling options and a list of Rule messages representing Common Expression Language (CEL) validation rules.

OneofRules

The OneofRules message type enables you to manage rules for oneof fields in your protobuf messages.

PredefinedRules

PredefinedRules are custom rules that can be re-used with multiple fields.

RepeatedRules

RepeatedRules describe the rules applied to repeated values.

Rule

Rule represents a validation rule written in the Common Expression Language (CEL) syntax. Each Rule includes a unique identifier, an optional error message, and the CEL expression to evaluate. For more information, see our documentation.

SFixed32Rules

SFixed32Rules describes the rules applied to fixed32 values.

SFixed64Rules

SFixed64Rules describes the rules applied to fixed64 values.

SInt32Rules

SInt32Rules describes the rules applied to sint32 values.

SInt64Rules

SInt64Rules describes the rules applied to sint64 values.

StringRules

StringRules describes the rules applied to string values These rules may also be applied to the google.protobuf.StringValue Well-Known-Type.

TimestampRules

TimestampRules describe the rules applied exclusively to the google.protobuf.Timestamp well-known type.

UInt32Rules

UInt32Rules describes the rules applied to uint32 values. These rules may also be applied to the google.protobuf.UInt32Value Well-Known-Type.

UInt64Rules

UInt64Rules describes the rules applied to uint64 values. These rules may also be applied to the google.protobuf.UInt64Value Well-Known-Type.

Violation

Violation represents a single instance where a validation rule, expressed as a Rule, was not met. It provides information about the field that caused the violation, the specific rule that wasn’t fulfilled, and a human-readable error message.

Violations

Violations is a collection of Violation messages. This message type is returned by Protovalidate when a proto message fails to meet the requirements set by the Rule validation rules. Each individual violation is represented by a Violation message.

Enums

ConstraintDecodeError

Error returned while decoding buf.validate descriptor extensions.

Ignore

Specifies how FieldRules.ignore behaves, depending on the field’s value, and whether the field tracks presence.

KnownRegex

KnownRegex contains some well-known patterns.

Statics

DESCRIPTOR_POOL

Traits

FieldConstraintsDynExt

Extension trait for extracting the DynamicMessage form of field constraints. This is useful for the runtime validator which needs to read rule fields dynamically.

FieldConstraintsExt

Extension trait for extracting buf.validate.field rules from a field descriptor.

MessageConstraintsDynExt

Extension trait for extracting the DynamicMessage form of message constraints.

MessageConstraintsExt

Extension trait for extracting buf.validate.message rules from a message descriptor.

OneofConstraintsExt

Extension trait for extracting buf.validate.oneof rules from a oneof descriptor.

PredefinedConstraintsExt

Extension trait for extracting buf.validate.predefined rules from a field descriptor.

Functions

descriptor_pool_decode_error

field_constraints_typed

Typed helper for extracting buf.validate.field rules from a field descriptor.

message_constraints_typed

Typed helper for extracting buf.validate.message rules from a message descriptor.

oneof_constraints_typed

Typed helper for extracting buf.validate.oneof rules from a oneof descriptor.

predefined_constraints_typed

Typed helper for extracting buf.validate.predefined rules from a field descriptor.

Type Aliases

ConstraintDecodeResult

Typed decode result for descriptor extension constraints.