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internal_upstream.proto
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internal_upstream.proto
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syntax = "proto3";
package envoy.extensions.transport_sockets.internal_upstream.v3;
import "envoy/config/core/v3/base.proto";
import "envoy/type/metadata/v3/metadata.proto";
import "udpa/annotations/status.proto";
import "validate/validate.proto";
option java_package = "io.envoyproxy.envoy.extensions.transport_sockets.internal_upstream.v3";
option java_outer_classname = "InternalUpstreamProto";
option java_multiple_files = true;
option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/transport_sockets/internal_upstream/v3;internal_upstreamv3";
option (udpa.annotations.file_status).package_version_status = ACTIVE;
// [#protodoc-title: Internal Upstream]
// [#extension: envoy.transport_sockets.internal_upstream]
// Configuration for the internal upstream address. An internal address defines
// a loopback user space socket residing in the same proxy instance. This
// extension allows passing additional structured state across the user space
// socket in addition to the regular byte stream. The purpose is to facilitate
// communication between filters on the downstream and the upstream internal
// connections. All filter state objects that are shared with the upstream
// connection are also shared with the downstream internal connection using
// this transport socket.
message InternalUpstreamTransport {
// Describes the location of the imported metadata value.
// If the metadata with the given name is not present at the source location,
// then no metadata is passed through for this particular instance.
message MetadataValueSource {
// Specifies what kind of metadata.
type.metadata.v3.MetadataKind kind = 1 [(validate.rules).message = {required: true}];
// Name is the filter namespace used in the dynamic metadata.
string name = 2 [(validate.rules).string = {min_len: 1}];
}
// Specifies the metadata namespaces and values to insert into the downstream
// internal connection dynamic metadata when an internal address is used as a
// host. If the destination name is repeated across two metadata source
// locations, and both locations contain the metadata with the given name,
// then the latter in the list overrides the former.
repeated MetadataValueSource passthrough_metadata = 1;
// The underlying transport socket being wrapped.
config.core.v3.TransportSocket transport_socket = 3 [(validate.rules).message = {required: true}];
}