package envoy.config.filter.http.header_to_metadata.v2

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• repeated Config.Rule request_rules = 1

  The list of rules to apply to requests.

• repeated Config.Rule response_rules = 2

  The list of rules to apply to responses.

[#next-free-field: 6]

Used in: Rule

• string metadata_namespace = 1

  The namespace — if this is empty, the filter's namespace will be used.

• string key = 2

  The key to use within the namespace.

• string value = 3

  The value to pair with the given key. When used for a `on_header_present` case, if value is non-empty it'll be used instead of the header value. If both are empty, no metadata is added. When used for a `on_header_missing` case, a non-empty value must be provided otherwise no metadata is added.

• ValueType type = 4

  The value's type — defaults to string.

• ValueEncode encode = 5

  How is the value encoded, default is NONE (not encoded). The value will be decoded accordingly before storing to metadata.

A Rule defines what metadata to apply when a header is present or missing.

Used in: Config

• string header = 1

  The header that triggers this rule — required.

• optional KeyValuePair on_header_present = 2

  If the header is present, apply this metadata KeyValuePair. If the value in the KeyValuePair is non-empty, it'll be used instead of the header value.

• optional KeyValuePair on_header_missing = 3

  If the header is not present, apply this metadata KeyValuePair. The value in the KeyValuePair must be set, since it'll be used in lieu of the missing header value.

• bool remove = 4

  Whether or not to remove the header after a rule is applied. This prevents headers from leaking.

ValueEncode defines the encoding algorithm.

Used in: KeyValuePair

• NONE = 0

  The value is not encoded.

• BASE64 = 1

  The value is encoded in `Base64 <https://tools.ietf.org/html/rfc4648#section-4>`_. Note: this is mostly used for STRING and PROTOBUF_VALUE to escape the non-ASCII characters in the header.

Used in: KeyValuePair

• STRING = 0

• NUMBER = 1

• PROTOBUF_VALUE = 2

  The value is a serialized `protobuf.Value <https://github.com/protocolbuffers/protobuf/blob/master/src/google/protobuf/struct.proto#L62>`_.