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syntax = "proto3";
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package envoy.api.v3alpha.route;
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option java_outer_classname = "RouteProto";
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option java_multiple_files = true;
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option java_package = "io.envoyproxy.envoy.api.v3alpha.route";
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import "envoy/api/v3alpha/core/base.proto";
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import "envoy/type/matcher/v3alpha/regex.proto";
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import "envoy/type/matcher/v3alpha/string.proto";
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import "envoy/type/v3alpha/percent.proto";
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import "envoy/type/v3alpha/range.proto";
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import "google/protobuf/any.proto";
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import "google/protobuf/duration.proto";
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import "google/protobuf/struct.proto";
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import "google/protobuf/wrappers.proto";
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import "validate/validate.proto";
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// [#protodoc-title: HTTP route]
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// * Routing :ref:`architecture overview <arch_overview_http_routing>`
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// * HTTP :ref:`router filter <config_http_filters_router>`
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// The top level element in the routing configuration is a virtual host. Each virtual host has
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// a logical name as well as a set of domains that get routed to it based on the incoming request's
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// host header. This allows a single listener to service multiple top level domain path trees. Once
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// a virtual host is selected based on the domain, the routes are processed in order to see which
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// upstream cluster to route to or whether to perform a redirect.
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// [#next-free-field: 18]
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message VirtualHost {
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enum TlsRequirementType {
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// No TLS requirement for the virtual host.
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NONE = 0;
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// External requests must use TLS. If a request is external and it is not
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// using TLS, a 301 redirect will be sent telling the client to use HTTPS.
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EXTERNAL_ONLY = 1;
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// All requests must use TLS. If a request is not using TLS, a 301 redirect
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// will be sent telling the client to use HTTPS.
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ALL = 2;
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}
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reserved 9;
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// The logical name of the virtual host. This is used when emitting certain
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// statistics but is not relevant for routing.
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string name = 1 [(validate.rules).string = {min_bytes: 1}];
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// A list of domains (host/authority header) that will be matched to this
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// virtual host. Wildcard hosts are supported in the suffix or prefix form.
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//
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// Domain search order:
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// 1. Exact domain names: ``www.foo.com``.
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// 2. Suffix domain wildcards: ``*.foo.com`` or ``*-bar.foo.com``.
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// 3. Prefix domain wildcards: ``foo.*`` or ``foo-*``.
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// 4. Special wildcard ``*`` matching any domain.
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//
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// .. note::
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//
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// The wildcard will not match the empty string.
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// e.g. ``*-bar.foo.com`` will match ``baz-bar.foo.com`` but not ``-bar.foo.com``.
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// The longest wildcards match first.
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// Only a single virtual host in the entire route configuration can match on ``*``. A domain
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// must be unique across all virtual hosts or the config will fail to load.
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repeated string domains = 2 [(validate.rules).repeated = {min_items: 1}];
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// The list of routes that will be matched, in order, for incoming requests.
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// The first route that matches will be used.
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repeated Route routes = 3;
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// Specifies the type of TLS enforcement the virtual host expects. If this option is not
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// specified, there is no TLS requirement for the virtual host.
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TlsRequirementType require_tls = 4;
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// A list of virtual clusters defined for this virtual host. Virtual clusters
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// are used for additional statistics gathering.
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repeated VirtualCluster virtual_clusters = 5;
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// Specifies a set of rate limit configurations that will be applied to the
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// virtual host.
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repeated RateLimit rate_limits = 6;
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// Specifies a list of HTTP headers that should be added to each request
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// handled by this virtual host. Headers specified at this level are applied
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// after headers from enclosed :ref:`envoy_api_msg_route.Route` and before headers from the
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// enclosing :ref:`envoy_api_msg_RouteConfiguration`. For more information, including
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// details on header value syntax, see the documentation on :ref:`custom request headers
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// <config_http_conn_man_headers_custom_request_headers>`.
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repeated core.HeaderValueOption request_headers_to_add = 7
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[(validate.rules).repeated = {max_items: 1000}];
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// Specifies a list of HTTP headers that should be removed from each request
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// handled by this virtual host.
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repeated string request_headers_to_remove = 13;
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// Specifies a list of HTTP headers that should be added to each response
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// handled by this virtual host. Headers specified at this level are applied
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// after headers from enclosed :ref:`envoy_api_msg_route.Route` and before headers from the
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// enclosing :ref:`envoy_api_msg_RouteConfiguration`. For more information, including
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// details on header value syntax, see the documentation on :ref:`custom request headers
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// <config_http_conn_man_headers_custom_request_headers>`.
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repeated core.HeaderValueOption response_headers_to_add = 10
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[(validate.rules).repeated = {max_items: 1000}];
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// Specifies a list of HTTP headers that should be removed from each response
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// handled by this virtual host.
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repeated string response_headers_to_remove = 11;
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// Indicates that the virtual host has a CORS policy.
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CorsPolicy cors = 8;
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// The per_filter_config field can be used to provide virtual host-specific
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// configurations for filters. The key should match the filter name, such as
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// *envoy.buffer* for the HTTP buffer filter. Use of this field is filter
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// specific; see the :ref:`HTTP filter documentation <config_http_filters>`
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// for if and how it is utilized.
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map<string, google.protobuf.Struct> per_filter_config = 12;
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// The per_filter_config field can be used to provide virtual host-specific
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// configurations for filters. The key should match the filter name, such as
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// *envoy.buffer* for the HTTP buffer filter. Use of this field is filter
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// specific; see the :ref:`HTTP filter documentation <config_http_filters>`
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// for if and how it is utilized.
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map<string, google.protobuf.Any> typed_per_filter_config = 15;
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// Decides whether the :ref:`x-envoy-attempt-count
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// <config_http_filters_router_x-envoy-attempt-count>` header should be included
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// in the upstream request. Setting this option will cause it to override any existing header
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// value, so in the case of two Envoys on the request path with this option enabled, the upstream
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// will see the attempt count as perceived by the second Envoy. Defaults to false.
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// This header is unaffected by the
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// :ref:`suppress_envoy_headers
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// <envoy_api_field_config.filter.http.router.v3alpha.Router.suppress_envoy_headers>` flag.
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bool include_request_attempt_count = 14;
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// Indicates the retry policy for all routes in this virtual host. Note that setting a
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// route level entry will take precedence over this config and it'll be treated
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// independently (e.g.: values are not inherited).
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RetryPolicy retry_policy = 16;
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// Indicates the hedge policy for all routes in this virtual host. Note that setting a
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// route level entry will take precedence over this config and it'll be treated
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// independently (e.g.: values are not inherited).
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HedgePolicy hedge_policy = 17;
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}
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// A route is both a specification of how to match a request as well as an indication of what to do
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// next (e.g., redirect, forward, rewrite, etc.).
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//
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// .. attention::
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//
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// Envoy supports routing on HTTP method via :ref:`header matching
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// <envoy_api_msg_api.v3alpha.route.HeaderMatcher>`.
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// [#next-free-field: 16]
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message Route {
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reserved 6;
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// Name for the route.
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string name = 14;
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// Route matching parameters.
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RouteMatch match = 1 [(validate.rules).message = {required: true}];
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oneof action {
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option (validate.required) = true;
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// Route request to some upstream cluster.
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RouteAction route = 2;
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// Return a redirect.
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RedirectAction redirect = 3;
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// Return an arbitrary HTTP response directly, without proxying.
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DirectResponseAction direct_response = 7;
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}
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// The Metadata field can be used to provide additional information
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// about the route. It can be used for configuration, stats, and logging.
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// The metadata should go under the filter namespace that will need it.
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// For instance, if the metadata is intended for the Router filter,
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// the filter name should be specified as *envoy.router*.
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core.Metadata metadata = 4;
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// Decorator for the matched route.
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Decorator decorator = 5;
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// The per_filter_config field can be used to provide route-specific
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// configurations for filters. The key should match the filter name, such as
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// *envoy.buffer* for the HTTP buffer filter. Use of this field is filter
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// specific; see the :ref:`HTTP filter documentation <config_http_filters>` for
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// if and how it is utilized.
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map<string, google.protobuf.Struct> per_filter_config = 8;
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// The per_filter_config field can be used to provide route-specific
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// configurations for filters. The key should match the filter name, such as
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// *envoy.buffer* for the HTTP buffer filter. Use of this field is filter
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// specific; see the :ref:`HTTP filter documentation <config_http_filters>` for
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// if and how it is utilized.
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map<string, google.protobuf.Any> typed_per_filter_config = 13;
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// Specifies a set of headers that will be added to requests matching this
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// route. Headers specified at this level are applied before headers from the
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// enclosing :ref:`envoy_api_msg_route.VirtualHost` and
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// :ref:`envoy_api_msg_RouteConfiguration`. For more information, including details on
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// header value syntax, see the documentation on :ref:`custom request headers
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// <config_http_conn_man_headers_custom_request_headers>`.
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repeated core.HeaderValueOption request_headers_to_add = 9
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[(validate.rules).repeated = {max_items: 1000}];
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// Specifies a list of HTTP headers that should be removed from each request
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// matching this route.
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repeated string request_headers_to_remove = 12;
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// Specifies a set of headers that will be added to responses to requests
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// matching this route. Headers specified at this level are applied before
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// headers from the enclosing :ref:`envoy_api_msg_route.VirtualHost` and
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// :ref:`envoy_api_msg_RouteConfiguration`. For more information, including
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// details on header value syntax, see the documentation on
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// :ref:`custom request headers <config_http_conn_man_headers_custom_request_headers>`.
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repeated core.HeaderValueOption response_headers_to_add = 10
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[(validate.rules).repeated = {max_items: 1000}];
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// Specifies a list of HTTP headers that should be removed from each response
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// to requests matching this route.
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repeated string response_headers_to_remove = 11;
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// Presence of the object defines whether the connection manager's tracing configuration
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// is overridden by this route specific instance.
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Tracing tracing = 15;
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}
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// Compared to the :ref:`cluster <envoy_api_field_api.v3alpha.route.RouteAction.cluster>` field that
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// specifies a single upstream cluster as the target of a request, the :ref:`weighted_clusters
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// <envoy_api_field_api.v3alpha.route.RouteAction.weighted_clusters>` option allows for
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// specification of multiple upstream clusters along with weights that indicate the percentage of
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// traffic to be forwarded to each cluster. The router selects an upstream cluster based on the
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// weights.
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message WeightedCluster {
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// [#next-free-field: 11]
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message ClusterWeight {
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reserved 7;
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// Name of the upstream cluster. The cluster must exist in the
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// :ref:`cluster manager configuration <config_cluster_manager>`.
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string name = 1 [(validate.rules).string = {min_bytes: 1}];
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// An integer between 0 and :ref:`total_weight
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// <envoy_api_field_api.v3alpha.route.WeightedCluster.total_weight>`. When a request matches the
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// route, the choice of an upstream cluster is determined by its weight. The sum of weights
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// across all entries in the clusters array must add up to the total_weight, which defaults to
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// 100.
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google.protobuf.UInt32Value weight = 2;
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// Optional endpoint metadata match criteria used by the subset load balancer. Only endpoints in
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// the upstream cluster with metadata matching what is set in this field will be considered for
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// load balancing. Note that this will be merged with what's provided in :ref:
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// `RouteAction.MetadataMatch <envoy_api_field_api.v3alpha.route.RouteAction.metadata_match>`,
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// with values here taking precedence. The filter name should be specified as *envoy.lb*.
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core.Metadata metadata_match = 3;
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// Specifies a list of headers to be added to requests when this cluster is selected
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// through the enclosing :ref:`envoy_api_msg_route.RouteAction`.
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// Headers specified at this level are applied before headers from the enclosing
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// :ref:`envoy_api_msg_route.Route`, :ref:`envoy_api_msg_route.VirtualHost`, and
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// :ref:`envoy_api_msg_RouteConfiguration`. For more information, including details on
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// header value syntax, see the documentation on :ref:`custom request headers
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// <config_http_conn_man_headers_custom_request_headers>`.
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repeated core.HeaderValueOption request_headers_to_add = 4
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[(validate.rules).repeated = {max_items: 1000}];
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// Specifies a list of HTTP headers that should be removed from each request when
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// this cluster is selected through the enclosing :ref:`envoy_api_msg_route.RouteAction`.
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repeated string request_headers_to_remove = 9;
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// Specifies a list of headers to be added to responses when this cluster is selected
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// through the enclosing :ref:`envoy_api_msg_route.RouteAction`.
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// Headers specified at this level are applied before headers from the enclosing
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// :ref:`envoy_api_msg_route.Route`, :ref:`envoy_api_msg_route.VirtualHost`, and
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// :ref:`envoy_api_msg_RouteConfiguration`. For more information, including details on
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// header value syntax, see the documentation on :ref:`custom request headers
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// <config_http_conn_man_headers_custom_request_headers>`.
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repeated core.HeaderValueOption response_headers_to_add = 5
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[(validate.rules).repeated = {max_items: 1000}];
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// Specifies a list of headers to be removed from responses when this cluster is selected
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// through the enclosing :ref:`envoy_api_msg_route.RouteAction`.
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repeated string response_headers_to_remove = 6;
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// The per_filter_config field can be used to provide weighted cluster-specific
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// configurations for filters. The key should match the filter name, such as
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// *envoy.buffer* for the HTTP buffer filter. Use of this field is filter
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// specific; see the :ref:`HTTP filter documentation <config_http_filters>`
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// for if and how it is utilized.
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map<string, google.protobuf.Struct> per_filter_config = 8;
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// The per_filter_config field can be used to provide weighted cluster-specific
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// configurations for filters. The key should match the filter name, such as
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// *envoy.buffer* for the HTTP buffer filter. Use of this field is filter
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// specific; see the :ref:`HTTP filter documentation <config_http_filters>`
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// for if and how it is utilized.
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map<string, google.protobuf.Any> typed_per_filter_config = 10;
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}
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// Specifies one or more upstream clusters associated with the route.
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repeated ClusterWeight clusters = 1 [(validate.rules).repeated = {min_items: 1}];
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// Specifies the total weight across all clusters. The sum of all cluster weights must equal this
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// value, which must be greater than 0. Defaults to 100.
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google.protobuf.UInt32Value total_weight = 3 [(validate.rules).uint32 = {gte: 1}];
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// Specifies the runtime key prefix that should be used to construct the
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// runtime keys associated with each cluster. When the *runtime_key_prefix* is
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// specified, the router will look for weights associated with each upstream
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// cluster under the key *runtime_key_prefix* + "." + *cluster[i].name* where
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// *cluster[i]* denotes an entry in the clusters array field. If the runtime
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// key for the cluster does not exist, the value specified in the
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// configuration file will be used as the default weight. See the :ref:`runtime documentation
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// <operations_runtime>` for how key names map to the underlying implementation.
|
|
|
|
string runtime_key_prefix = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
// [#next-free-field: 12]
|
|
|
|
message RouteMatch {
|
|
|
|
message GrpcRouteMatchOptions {
|
|
|
|
}
|
|
|
|
|
|
|
|
message TlsContextMatchOptions {
|
|
|
|
// If specified, the route will match against whether or not a certificate is presented.
|
|
|
|
google.protobuf.BoolValue presented = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
reserved 5, 3;
|
|
|
|
|
|
|
|
reserved "regex";
|
|
|
|
|
|
|
|
oneof path_specifier {
|
|
|
|
option (validate.required) = true;
|
|
|
|
|
|
|
|
// If specified, the route is a prefix rule meaning that the prefix must
|
|
|
|
// match the beginning of the *:path* header.
|
|
|
|
string prefix = 1;
|
|
|
|
|
|
|
|
// If specified, the route is an exact path rule meaning that the path must
|
|
|
|
// exactly match the *:path* header once the query string is removed.
|
|
|
|
string path = 2;
|
|
|
|
|
|
|
|
// If specified, the route is a regular expression rule meaning that the
|
|
|
|
// regex must match the *:path* header once the query string is removed. The entire path
|
|
|
|
// (without the query string) must match the regex. The rule will not match if only a
|
|
|
|
// subsequence of the *:path* header matches the regex.
|
|
|
|
//
|
|
|
|
// [#next-major-version: In the v3 API we should redo how path specification works such
|
|
|
|
// that we utilize StringMatcher, and additionally have consistent options around whether we
|
|
|
|
// strip query strings, do a case sensitive match, etc. In the interim it will be too disruptive
|
|
|
|
// to deprecate the existing options. We should even consider whether we want to do away with
|
|
|
|
// path_specifier entirely and just rely on a set of header matchers which can already match
|
|
|
|
// on :path, etc. The issue with that is it is unclear how to generically deal with query string
|
|
|
|
// stripping. This needs more thought.]
|
|
|
|
type.matcher.v3alpha.RegexMatcher safe_regex = 10 [(validate.rules).message = {required: true}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Indicates that prefix/path matching should be case insensitive. The default
|
|
|
|
// is true.
|
|
|
|
google.protobuf.BoolValue case_sensitive = 4;
|
|
|
|
|
|
|
|
// Indicates that the route should additionally match on a runtime key. Every time the route
|
|
|
|
// is considered for a match, it must also fall under the percentage of matches indicated by
|
|
|
|
// this field. For some fraction N/D, a random number in the range [0,D) is selected. If the
|
|
|
|
// number is <= the value of the numerator N, or if the key is not present, the default
|
|
|
|
// value, the router continues to evaluate the remaining match criteria. A runtime_fraction
|
|
|
|
// route configuration can be used to roll out route changes in a gradual manner without full
|
|
|
|
// code/config deploys. Refer to the :ref:`traffic shifting
|
|
|
|
// <config_http_conn_man_route_table_traffic_splitting_shift>` docs for additional documentation.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// Parsing this field is implemented such that the runtime key's data may be represented
|
|
|
|
// as a FractionalPercent proto represented as JSON/YAML and may also be represented as an
|
|
|
|
// integer with the assumption that the value is an integral percentage out of 100. For
|
|
|
|
// instance, a runtime key lookup returning the value "42" would parse as a FractionalPercent
|
|
|
|
// whose numerator is 42 and denominator is HUNDRED. This preserves legacy semantics.
|
|
|
|
core.RuntimeFractionalPercent runtime_fraction = 9;
|
|
|
|
|
|
|
|
// Specifies a set of headers that the route should match on. The router will
|
|
|
|
// check the request’s headers against all the specified headers in the route
|
|
|
|
// config. A match will happen if all the headers in the route are present in
|
|
|
|
// the request with the same values (or based on presence if the value field
|
|
|
|
// is not in the config).
|
|
|
|
repeated HeaderMatcher headers = 6;
|
|
|
|
|
|
|
|
// Specifies a set of URL query parameters on which the route should
|
|
|
|
// match. The router will check the query string from the *path* header
|
|
|
|
// against all the specified query parameters. If the number of specified
|
|
|
|
// query parameters is nonzero, they all must match the *path* header's
|
|
|
|
// query string for a match to occur.
|
|
|
|
repeated QueryParameterMatcher query_parameters = 7;
|
|
|
|
|
|
|
|
// If specified, only gRPC requests will be matched. The router will check
|
|
|
|
// that the content-type header has a application/grpc or one of the various
|
|
|
|
// application/grpc+ values.
|
|
|
|
GrpcRouteMatchOptions grpc = 8;
|
|
|
|
|
|
|
|
// If specified, the client tls context will be matched against the defined
|
|
|
|
// match options.
|
|
|
|
//
|
|
|
|
// [#next-major-version: unify with RBAC]
|
|
|
|
TlsContextMatchOptions tls_context = 11;
|
|
|
|
}
|
|
|
|
|
|
|
|
// [#next-free-field: 12]
|
|
|
|
message CorsPolicy {
|
|
|
|
reserved 1, 8, 7;
|
|
|
|
|
|
|
|
reserved "allow_origin", "allow_origin_regex", "enabled";
|
|
|
|
|
|
|
|
// Specifies string patterns that match allowed origins. An origin is allowed if any of the
|
|
|
|
// string matchers match.
|
|
|
|
repeated type.matcher.v3alpha.StringMatcher allow_origin_string_match = 11;
|
|
|
|
|
|
|
|
// Specifies the content for the *access-control-allow-methods* header.
|
|
|
|
string allow_methods = 2;
|
|
|
|
|
|
|
|
// Specifies the content for the *access-control-allow-headers* header.
|
|
|
|
string allow_headers = 3;
|
|
|
|
|
|
|
|
// Specifies the content for the *access-control-expose-headers* header.
|
|
|
|
string expose_headers = 4;
|
|
|
|
|
|
|
|
// Specifies the content for the *access-control-max-age* header.
|
|
|
|
string max_age = 5;
|
|
|
|
|
|
|
|
// Specifies whether the resource allows credentials.
|
|
|
|
google.protobuf.BoolValue allow_credentials = 6;
|
|
|
|
|
|
|
|
oneof enabled_specifier {
|
|
|
|
// Specifies if CORS is enabled.
|
|
|
|
//
|
|
|
|
// More information on how this can be controlled via runtime can be found
|
|
|
|
// :ref:`here <cors-runtime>`.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// This field defaults to 100/:ref:`HUNDRED
|
|
|
|
// <envoy_api_enum_type.v3alpha.FractionalPercent.DenominatorType>`.
|
|
|
|
core.RuntimeFractionalPercent filter_enabled = 9;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Specifies if CORS policies are evaluated and tracked when filter is off but
|
|
|
|
// does not enforce any policies.
|
|
|
|
//
|
|
|
|
// More information on how this can be controlled via runtime can be found
|
|
|
|
// :ref:`here <cors-runtime>`.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// This field defaults to 100/:ref:`HUNDRED
|
|
|
|
// <envoy_api_enum_type.v3alpha.FractionalPercent.DenominatorType>`.
|
|
|
|
core.RuntimeFractionalPercent shadow_enabled = 10;
|
|
|
|
}
|
|
|
|
|
|
|
|
// [#next-free-field: 30]
|
|
|
|
message RouteAction {
|
|
|
|
enum ClusterNotFoundResponseCode {
|
|
|
|
// HTTP status code - 503 Service Unavailable.
|
|
|
|
SERVICE_UNAVAILABLE = 0;
|
|
|
|
|
|
|
|
// HTTP status code - 404 Not Found.
|
|
|
|
NOT_FOUND = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Configures :ref:`internal redirect <arch_overview_internal_redirects>` behavior.
|
|
|
|
enum InternalRedirectAction {
|
|
|
|
PASS_THROUGH_INTERNAL_REDIRECT = 0;
|
|
|
|
HANDLE_INTERNAL_REDIRECT = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
// The router is capable of shadowing traffic from one cluster to another. The current
|
|
|
|
// implementation is "fire and forget," meaning Envoy will not wait for the shadow cluster to
|
|
|
|
// respond before returning the response from the primary cluster. All normal statistics are
|
|
|
|
// collected for the shadow cluster making this feature useful for testing.
|
|
|
|
//
|
|
|
|
// During shadowing, the host/authority header is altered such that *-shadow* is appended. This is
|
|
|
|
// useful for logging. For example, *cluster1* becomes *cluster1-shadow*.
|
|
|
|
message RequestMirrorPolicy {
|
|
|
|
reserved 2;
|
|
|
|
|
|
|
|
reserved "runtime_key";
|
|
|
|
|
|
|
|
// Specifies the cluster that requests will be mirrored to. The cluster must
|
|
|
|
// exist in the cluster manager configuration.
|
|
|
|
string cluster = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// If both :ref:`runtime_key
|
|
|
|
// <envoy_api_field_api.v3alpha.route.RouteAction.RequestMirrorPolicy.runtime_key>` and this
|
|
|
|
// field are not specified, all requests to the target cluster will be mirrored.
|
|
|
|
//
|
|
|
|
// If specified, this field takes precedence over the `runtime_key` field and requests must also
|
|
|
|
// fall under the percentage of matches indicated by this field.
|
|
|
|
//
|
|
|
|
// For some fraction N/D, a random number in the range [0,D) is selected. If the
|
|
|
|
// number is <= the value of the numerator N, or if the key is not present, the default
|
|
|
|
// value, the request will be mirrored.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// Parsing this field is implemented such that the runtime key's data may be represented
|
|
|
|
// as a :ref:`FractionalPercent <envoy_api_msg_type.v3alpha.FractionalPercent>` proto
|
|
|
|
// represented as JSON/YAML and may also be represented as an integer with the assumption that
|
|
|
|
// the value is an integral percentage out of 100. For instance, a runtime key lookup
|
|
|
|
// returning the value "42" would parse as a `FractionalPercent` whose numerator is 42 and
|
|
|
|
// denominator is HUNDRED. This is behaviour is different to that of the deprecated
|
|
|
|
// `runtime_key` field, where the implicit denominator is 10000.
|
|
|
|
core.RuntimeFractionalPercent runtime_fraction = 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Specifies the route's hashing policy if the upstream cluster uses a hashing :ref:`load balancer
|
|
|
|
// <arch_overview_load_balancing_types>`.
|
|
|
|
message HashPolicy {
|
|
|
|
message Header {
|
|
|
|
// The name of the request header that will be used to obtain the hash
|
|
|
|
// key. If the request header is not present, no hash will be produced.
|
|
|
|
string header_name = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Envoy supports two types of cookie affinity:
|
|
|
|
//
|
|
|
|
// 1. Passive. Envoy takes a cookie that's present in the cookies header and
|
|
|
|
// hashes on its value.
|
|
|
|
//
|
|
|
|
// 2. Generated. Envoy generates and sets a cookie with an expiration (TTL)
|
|
|
|
// on the first request from the client in its response to the client,
|
|
|
|
// based on the endpoint the request gets sent to. The client then
|
|
|
|
// presents this on the next and all subsequent requests. The hash of
|
|
|
|
// this is sufficient to ensure these requests get sent to the same
|
|
|
|
// endpoint. The cookie is generated by hashing the source and
|
|
|
|
// destination ports and addresses so that multiple independent HTTP2
|
|
|
|
// streams on the same connection will independently receive the same
|
|
|
|
// cookie, even if they arrive at the Envoy simultaneously.
|
|
|
|
message Cookie {
|
|
|
|
// The name of the cookie that will be used to obtain the hash key. If the
|
|
|
|
// cookie is not present and ttl below is not set, no hash will be
|
|
|
|
// produced.
|
|
|
|
string name = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// If specified, a cookie with the TTL will be generated if the cookie is
|
|
|
|
// not present. If the TTL is present and zero, the generated cookie will
|
|
|
|
// be a session cookie.
|
|
|
|
google.protobuf.Duration ttl = 2;
|
|
|
|
|
|
|
|
// The name of the path for the cookie. If no path is specified here, no path
|
|
|
|
// will be set for the cookie.
|
|
|
|
string path = 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
message ConnectionProperties {
|
|
|
|
// Hash on source IP address.
|
|
|
|
bool source_ip = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
oneof policy_specifier {
|
|
|
|
option (validate.required) = true;
|
|
|
|
|
|
|
|
// Header hash policy.
|
|
|
|
Header header = 1;
|
|
|
|
|
|
|
|
// Cookie hash policy.
|
|
|
|
Cookie cookie = 2;
|
|
|
|
|
|
|
|
// Connection properties hash policy.
|
|
|
|
ConnectionProperties connection_properties = 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
// The flag that short-circuits the hash computing. This field provides a
|
|
|
|
// 'fallback' style of configuration: "if a terminal policy doesn't work,
|
|
|
|
// fallback to rest of the policy list", it saves time when the terminal
|
|
|
|
// policy works.
|
|
|
|
//
|
|
|
|
// If true, and there is already a hash computed, ignore rest of the
|
|
|
|
// list of hash polices.
|
|
|
|
// For example, if the following hash methods are configured:
|
|
|
|
//
|
|
|
|
// ========= ========
|
|
|
|
// specifier terminal
|
|
|
|
// ========= ========
|
|
|
|
// Header A true
|
|
|
|
// Header B false
|
|
|
|
// Header C false
|
|
|
|
// ========= ========
|
|
|
|
//
|
|
|
|
// The generateHash process ends if policy "header A" generates a hash, as
|
|
|
|
// it's a terminal policy.
|
|
|
|
bool terminal = 4;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Allows enabling and disabling upgrades on a per-route basis.
|
|
|
|
// This overrides any enabled/disabled upgrade filter chain specified in the
|
|
|
|
// HttpConnectionManager
|
|
|
|
// :ref:upgrade_configs`
|
|
|
|
// <envoy_api_field_config.filter.network.http_connection_manager.v3alpha.HttpConnectionManager.upgrade_configs>`
|
|
|
|
// but does not affect any custom filter chain specified there.
|
|
|
|
message UpgradeConfig {
|
|
|
|
// The case-insensitive name of this upgrade, e.g. "websocket".
|
|
|
|
// For each upgrade type present in upgrade_configs, requests with
|
|
|
|
// Upgrade: [upgrade_type] will be proxied upstream.
|
|
|
|
string upgrade_type = 1;
|
|
|
|
|
|
|
|
// Determines if upgrades are available on this route. Defaults to true.
|
|
|
|
google.protobuf.BoolValue enabled = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
reserved 12, 18, 19, 16, 22, 21;
|
|
|
|
|
|
|
|
oneof cluster_specifier {
|
|
|
|
option (validate.required) = true;
|
|
|
|
|
|
|
|
// Indicates the upstream cluster to which the request should be routed
|
|
|
|
// to.
|
|
|
|
string cluster = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// Envoy will determine the cluster to route to by reading the value of the
|
|
|
|
// HTTP header named by cluster_header from the request headers. If the
|
|
|
|
// header is not found or the referenced cluster does not exist, Envoy will
|
|
|
|
// return a 404 response.
|
|
|
|
//
|
|
|
|
// .. attention::
|
|
|
|
//
|
|
|
|
// Internally, Envoy always uses the HTTP/2 *:authority* header to represent the HTTP/1
|
|
|
|
// *Host* header. Thus, if attempting to match on *Host*, match on *:authority* instead.
|
|
|
|
string cluster_header = 2 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// Multiple upstream clusters can be specified for a given route. The
|
|
|
|
// request is routed to one of the upstream clusters based on weights
|
|
|
|
// assigned to each cluster. See
|
|
|
|
// :ref:`traffic splitting <config_http_conn_man_route_table_traffic_splitting_split>`
|
|
|
|
// for additional documentation.
|
|
|
|
WeightedCluster weighted_clusters = 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
// The HTTP status code to use when configured cluster is not found.
|
|
|
|
// The default response code is 503 Service Unavailable.
|
|
|
|
ClusterNotFoundResponseCode cluster_not_found_response_code = 20
|
|
|
|
[(validate.rules).enum = {defined_only: true}];
|
|
|
|
|
|
|
|
// Optional endpoint metadata match criteria used by the subset load balancer. Only endpoints
|
|
|
|
// in the upstream cluster with metadata matching what's set in this field will be considered
|
|
|
|
// for load balancing. If using :ref:`weighted_clusters
|
|
|
|
// <envoy_api_field_api.v3alpha.route.RouteAction.weighted_clusters>`, metadata will be merged,
|
|
|
|
// with values provided there taking precedence. The filter name should be specified as
|
|
|
|
// *envoy.lb*.
|
|
|
|
core.Metadata metadata_match = 4;
|
|
|
|
|
|
|
|
// Indicates that during forwarding, the matched prefix (or path) should be
|
|
|
|
// swapped with this value. This option allows application URLs to be rooted
|
|
|
|
// at a different path from those exposed at the reverse proxy layer. The router filter will
|
|
|
|
// place the original path before rewrite into the :ref:`x-envoy-original-path
|
|
|
|
// <config_http_filters_router_x-envoy-original-path>` header.
|
|
|
|
//
|
|
|
|
// .. attention::
|
|
|
|
//
|
|
|
|
// Pay careful attention to the use of trailing slashes in the
|
|
|
|
// :ref:`route's match <envoy_api_field_api.v3alpha.route.Route.match>` prefix value.
|
|
|
|
// Stripping a prefix from a path requires multiple Routes to handle all cases. For example,
|
|
|
|
// rewriting */prefix* to */* and */prefix/etc* to */etc* cannot be done in a single
|
|
|
|
// :ref:`Route <envoy_api_msg_api.v3alpha.route.Route>`, as shown by the below config entries:
|
|
|
|
//
|
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// .. code-block:: yaml
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//
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// - match:
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// prefix: "/prefix/"
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// route:
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// prefix_rewrite: "/"
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// - match:
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// prefix: "/prefix"
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// route:
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// prefix_rewrite: "/"
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//
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// Having above entries in the config, requests to */prefix* will be stripped to */*, while
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// requests to */prefix/etc* will be stripped to */etc*.
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string prefix_rewrite = 5;
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oneof host_rewrite_specifier {
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// Indicates that during forwarding, the host header will be swapped with
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// this value.
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string host_rewrite = 6;
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// Indicates that during forwarding, the host header will be swapped with
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// the hostname of the upstream host chosen by the cluster manager. This
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// option is applicable only when the destination cluster for a route is of
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// type *strict_dns* or *logical_dns*. Setting this to true with other cluster
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// types has no effect.
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google.protobuf.BoolValue auto_host_rewrite = 7;
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// Indicates that during forwarding, the host header will be swapped with the content of given
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// downstream or :ref:`custom <config_http_conn_man_headers_custom_request_headers>` header.
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// If header value is empty, host header is left intact.
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//
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// .. attention::
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//
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// Pay attention to the potential security implications of using this option. Provided header
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// must come from trusted source.
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string auto_host_rewrite_header = 29;
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}
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// Specifies the upstream timeout for the route. If not specified, the default is 15s. This
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// spans between the point at which the entire downstream request (i.e. end-of-stream) has been
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// processed and when the upstream response has been completely processed. A value of 0 will
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// disable the route's timeout.
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//
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// .. note::
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//
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// This timeout includes all retries. See also
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// :ref:`config_http_filters_router_x-envoy-upstream-rq-timeout-ms`,
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// :ref:`config_http_filters_router_x-envoy-upstream-rq-per-try-timeout-ms`, and the
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// :ref:`retry overview <arch_overview_http_routing_retry>`.
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google.protobuf.Duration timeout = 8;
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// Specifies the idle timeout for the route. If not specified, there is no per-route idle timeout,
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// although the connection manager wide :ref:`stream_idle_timeout
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// <envoy_api_field_config.filter.network.http_connection_manager.v3alpha.HttpConnectionManager.stream_idle_timeout>`
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// will still apply. A value of 0 will completely disable the route's idle timeout, even if a
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// connection manager stream idle timeout is configured.
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//
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// The idle timeout is distinct to :ref:`timeout
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// <envoy_api_field_api.v3alpha.route.RouteAction.timeout>`, which provides an upper bound
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// on the upstream response time; :ref:`idle_timeout
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// <envoy_api_field_api.v3alpha.route.RouteAction.idle_timeout>` instead bounds the amount
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// of time the request's stream may be idle.
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//
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// After header decoding, the idle timeout will apply on downstream and
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// upstream request events. Each time an encode/decode event for headers or
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// data is processed for the stream, the timer will be reset. If the timeout
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// fires, the stream is terminated with a 408 Request Timeout error code if no
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// upstream response header has been received, otherwise a stream reset
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// occurs.
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google.protobuf.Duration idle_timeout = 24;
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// Indicates that the route has a retry policy. Note that if this is set,
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// it'll take precedence over the virtual host level retry policy entirely
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// (e.g.: policies are not merged, most internal one becomes the enforced policy).
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RetryPolicy retry_policy = 9;
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// Indicates that the route has a request mirroring policy.
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RequestMirrorPolicy request_mirror_policy = 10;
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// Optionally specifies the :ref:`routing priority <arch_overview_http_routing_priority>`.
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// [#comment:TODO(htuch): add (validate.rules).enum.defined_only = true once
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// https://github.com/lyft/protoc-gen-validate/issues/42 is resolved.]
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core.RoutingPriority priority = 11;
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// Specifies a set of rate limit configurations that could be applied to the
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// route.
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repeated RateLimit rate_limits = 13;
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// Specifies if the rate limit filter should include the virtual host rate
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// limits. By default, if the route configured rate limits, the virtual host
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// :ref:`rate_limits <envoy_api_field_api.v3alpha.route.VirtualHost.rate_limits>` are not applied
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// to the request.
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google.protobuf.BoolValue include_vh_rate_limits = 14;
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// Specifies a list of hash policies to use for ring hash load balancing. Each
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// hash policy is evaluated individually and the combined result is used to
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// route the request. The method of combination is deterministic such that
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// identical lists of hash policies will produce the same hash. Since a hash
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// policy examines specific parts of a request, it can fail to produce a hash
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// (i.e. if the hashed header is not present). If (and only if) all configured
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// hash policies fail to generate a hash, no hash will be produced for
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// the route. In this case, the behavior is the same as if no hash policies
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// were specified (i.e. the ring hash load balancer will choose a random
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// backend). If a hash policy has the "terminal" attribute set to true, and
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// there is already a hash generated, the hash is returned immediately,
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// ignoring the rest of the hash policy list.
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repeated HashPolicy hash_policy = 15;
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// Indicates that the route has a CORS policy.
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CorsPolicy cors = 17;
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// If present, and the request is a gRPC request, use the
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// `grpc-timeout header <https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md>`_,
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// or its default value (infinity) instead of
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// :ref:`timeout <envoy_api_field_api.v3alpha.route.RouteAction.timeout>`, but limit the applied
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// timeout to the maximum value specified here. If configured as 0, the maximum allowed timeout
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// for gRPC requests is infinity. If not configured at all, the `grpc-timeout` header is not used
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// and gRPC requests time out like any other requests using
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// :ref:`timeout <envoy_api_field_api.v3alpha.route.RouteAction.timeout>` or its default.
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// This can be used to prevent unexpected upstream request timeouts due to potentially long
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// time gaps between gRPC request and response in gRPC streaming mode.
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google.protobuf.Duration max_grpc_timeout = 23;
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// If present, Envoy will adjust the timeout provided by the `grpc-timeout` header by subtracting
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// the provided duration from the header. This is useful in allowing Envoy to set its global
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// timeout to be less than that of the deadline imposed by the calling client, which makes it more
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// likely that Envoy will handle the timeout instead of having the call canceled by the client.
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// The offset will only be applied if the provided grpc_timeout is greater than the offset. This
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// ensures that the offset will only ever decrease the timeout and never set it to 0 (meaning
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// infinity).
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google.protobuf.Duration grpc_timeout_offset = 28;
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repeated UpgradeConfig upgrade_configs = 25;
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InternalRedirectAction internal_redirect_action = 26;
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// Indicates that the route has a hedge policy. Note that if this is set,
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// it'll take precedence over the virtual host level hedge policy entirely
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// (e.g.: policies are not merged, most internal one becomes the enforced policy).
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HedgePolicy hedge_policy = 27;
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}
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// HTTP retry :ref:`architecture overview <arch_overview_http_routing_retry>`.
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// [#next-free-field: 11]
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message RetryPolicy {
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message RetryPriority {
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string name = 1 [(validate.rules).string = {min_bytes: 1}];
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oneof config_type {
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google.protobuf.Struct config = 2;
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google.protobuf.Any typed_config = 3;
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}
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}
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message RetryHostPredicate {
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string name = 1 [(validate.rules).string = {min_bytes: 1}];
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oneof config_type {
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google.protobuf.Struct config = 2;
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google.protobuf.Any typed_config = 3;
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}
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}
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message RetryBackOff {
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// Specifies the base interval between retries. This parameter is required and must be greater
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// than zero. Values less than 1 ms are rounded up to 1 ms.
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// See :ref:`config_http_filters_router_x-envoy-max-retries` for a discussion of Envoy's
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// back-off algorithm.
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google.protobuf.Duration base_interval = 1 [(validate.rules).duration = {
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required: true
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gt {}
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}];
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// Specifies the maximum interval between retries. This parameter is optional, but must be
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// greater than or equal to the `base_interval` if set. The default is 10 times the
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// `base_interval`. See :ref:`config_http_filters_router_x-envoy-max-retries` for a discussion
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// of Envoy's back-off algorithm.
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google.protobuf.Duration max_interval = 2 [(validate.rules).duration = {gt {}}];
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}
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// Specifies the conditions under which retry takes place. These are the same
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// conditions documented for :ref:`config_http_filters_router_x-envoy-retry-on` and
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// :ref:`config_http_filters_router_x-envoy-retry-grpc-on`.
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string retry_on = 1;
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// Specifies the allowed number of retries. This parameter is optional and
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// defaults to 1. These are the same conditions documented for
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// :ref:`config_http_filters_router_x-envoy-max-retries`.
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google.protobuf.UInt32Value num_retries = 2;
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// Specifies a non-zero upstream timeout per retry attempt. This parameter is optional. The
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// same conditions documented for
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// :ref:`config_http_filters_router_x-envoy-upstream-rq-per-try-timeout-ms` apply.
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//
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// .. note::
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//
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// If left unspecified, Envoy will use the global
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// :ref:`route timeout <envoy_api_field_api.v3alpha.route.RouteAction.timeout>` for the request.
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// Consequently, when using a :ref:`5xx <config_http_filters_router_x-envoy-retry-on>` based
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// retry policy, a request that times out will not be retried as the total timeout budget
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// would have been exhausted.
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google.protobuf.Duration per_try_timeout = 3;
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// Specifies an implementation of a RetryPriority which is used to determine the
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// distribution of load across priorities used for retries. Refer to
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// :ref:`retry plugin configuration <arch_overview_http_retry_plugins>` for more details.
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RetryPriority retry_priority = 4;
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// Specifies a collection of RetryHostPredicates that will be consulted when selecting a host
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// for retries. If any of the predicates reject the host, host selection will be reattempted.
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// Refer to :ref:`retry plugin configuration <arch_overview_http_retry_plugins>` for more
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// details.
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repeated RetryHostPredicate retry_host_predicate = 5;
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// The maximum number of times host selection will be reattempted before giving up, at which
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// point the host that was last selected will be routed to. If unspecified, this will default to
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// retrying once.
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int64 host_selection_retry_max_attempts = 6;
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// HTTP status codes that should trigger a retry in addition to those specified by retry_on.
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repeated uint32 retriable_status_codes = 7;
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// Specifies parameters that control retry back off. This parameter is optional, in which case the
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// default base interval is 25 milliseconds or, if set, the current value of the
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// `upstream.base_retry_backoff_ms` runtime parameter. The default maximum interval is 10 times
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// the base interval. The documentation for :ref:`config_http_filters_router_x-envoy-max-retries`
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// describes Envoy's back-off algorithm.
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RetryBackOff retry_back_off = 8;
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// HTTP response headers that trigger a retry if present in the response. A retry will be
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// triggered if any of the header matches match the upstream response headers.
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// The field is only consulted if 'retriable-headers' retry policy is active.
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repeated HeaderMatcher retriable_headers = 9;
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// HTTP headers which must be present in the request for retries to be attempted.
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repeated HeaderMatcher retriable_request_headers = 10;
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}
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// HTTP request hedging :ref:`architecture overview <arch_overview_http_routing_hedging>`.
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message HedgePolicy {
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// Specifies the number of initial requests that should be sent upstream.
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// Must be at least 1.
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// Defaults to 1.
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// [#not-implemented-hide:]
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google.protobuf.UInt32Value initial_requests = 1 [(validate.rules).uint32 = {gte: 1}];
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// Specifies a probability that an additional upstream request should be sent
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// on top of what is specified by initial_requests.
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// Defaults to 0.
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// [#not-implemented-hide:]
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type.v3alpha.FractionalPercent additional_request_chance = 2;
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// Indicates that a hedged request should be sent when the per-try timeout
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// is hit. This will only occur if the retry policy also indicates that a
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// timed out request should be retried.
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// Once a timed out request is retried due to per try timeout, the router
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// filter will ensure that it is not retried again even if the returned
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// response headers would otherwise be retried according the specified
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// :ref:`RetryPolicy <envoy_api_msg_api.v3alpha.route.RetryPolicy>`.
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// Defaults to false.
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bool hedge_on_per_try_timeout = 3;
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}
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// [#next-free-field: 9]
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message RedirectAction {
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enum RedirectResponseCode {
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// Moved Permanently HTTP Status Code - 301.
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MOVED_PERMANENTLY = 0;
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// Found HTTP Status Code - 302.
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FOUND = 1;
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// See Other HTTP Status Code - 303.
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SEE_OTHER = 2;
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// Temporary Redirect HTTP Status Code - 307.
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TEMPORARY_REDIRECT = 3;
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// Permanent Redirect HTTP Status Code - 308.
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PERMANENT_REDIRECT = 4;
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}
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// When the scheme redirection take place, the following rules apply:
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// 1. If the source URI scheme is `http` and the port is explicitly
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// set to `:80`, the port will be removed after the redirection
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// 2. If the source URI scheme is `https` and the port is explicitly
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// set to `:443`, the port will be removed after the redirection
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oneof scheme_rewrite_specifier {
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// The scheme portion of the URL will be swapped with "https".
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bool https_redirect = 4;
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// The scheme portion of the URL will be swapped with this value.
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string scheme_redirect = 7;
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}
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// The host portion of the URL will be swapped with this value.
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string host_redirect = 1;
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// The port value of the URL will be swapped with this value.
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uint32 port_redirect = 8;
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oneof path_rewrite_specifier {
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// The path portion of the URL will be swapped with this value.
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string path_redirect = 2;
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// Indicates that during redirection, the matched prefix (or path)
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// should be swapped with this value. This option allows redirect URLs be dynamically created
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// based on the request.
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//
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// .. attention::
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//
|
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|
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// Pay attention to the use of trailing slashes as mentioned in
|
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|
|
// :ref:`RouteAction's prefix_rewrite
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|
|
|
// <envoy_api_field_api.v3alpha.route.RouteAction.prefix_rewrite>`.
|
|
|
|
string prefix_rewrite = 5;
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}
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// The HTTP status code to use in the redirect response. The default response
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// code is MOVED_PERMANENTLY (301).
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RedirectResponseCode response_code = 3 [(validate.rules).enum = {defined_only: true}];
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// Indicates that during redirection, the query portion of the URL will
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// be removed. Default value is false.
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bool strip_query = 6;
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}
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message DirectResponseAction {
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// Specifies the HTTP response status to be returned.
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|
|
uint32 status = 1 [(validate.rules).uint32 = {lt: 600 gte: 100}];
|
|
|
|
|
|
|
|
// Specifies the content of the response body. If this setting is omitted,
|
|
|
|
// no body is included in the generated response.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// Headers can be specified using *response_headers_to_add* in the enclosing
|
|
|
|
// :ref:`envoy_api_msg_route.Route`, :ref:`envoy_api_msg_RouteConfiguration` or
|
|
|
|
// :ref:`envoy_api_msg_route.VirtualHost`.
|
|
|
|
core.DataSource body = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
message Decorator {
|
|
|
|
// The operation name associated with the request matched to this route. If tracing is
|
|
|
|
// enabled, this information will be used as the span name reported for this request.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// For ingress (inbound) requests, or egress (outbound) responses, this value may be overridden
|
|
|
|
// by the :ref:`x-envoy-decorator-operation
|
|
|
|
// <config_http_filters_router_x-envoy-decorator-operation>` header.
|
|
|
|
string operation = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
message Tracing {
|
|
|
|
// Target percentage of requests managed by this HTTP connection manager that will be force
|
|
|
|
// traced if the :ref:`x-client-trace-id <config_http_conn_man_headers_x-client-trace-id>`
|
|
|
|
// header is set. This field is a direct analog for the runtime variable
|
|
|
|
// 'tracing.client_sampling' in the :ref:`HTTP Connection Manager
|
|
|
|
// <config_http_conn_man_runtime>`.
|
|
|
|
// Default: 100%
|
|
|
|
type.v3alpha.FractionalPercent client_sampling = 1;
|
|
|
|
|
|
|
|
// Target percentage of requests managed by this HTTP connection manager that will be randomly
|
|
|
|
// selected for trace generation, if not requested by the client or not forced. This field is
|
|
|
|
// a direct analog for the runtime variable 'tracing.random_sampling' in the
|
|
|
|
// :ref:`HTTP Connection Manager <config_http_conn_man_runtime>`.
|
|
|
|
// Default: 100%
|
|
|
|
type.v3alpha.FractionalPercent random_sampling = 2;
|
|
|
|
|
|
|
|
// Target percentage of requests managed by this HTTP connection manager that will be traced
|
|
|
|
// after all other sampling checks have been applied (client-directed, force tracing, random
|
|
|
|
// sampling). This field functions as an upper limit on the total configured sampling rate. For
|
|
|
|
// instance, setting client_sampling to 100% but overall_sampling to 1% will result in only 1%
|
|
|
|
// of client requests with the appropriate headers to be force traced. This field is a direct
|
|
|
|
// analog for the runtime variable 'tracing.global_enabled' in the
|
|
|
|
// :ref:`HTTP Connection Manager <config_http_conn_man_runtime>`.
|
|
|
|
// Default: 100%
|
|
|
|
type.v3alpha.FractionalPercent overall_sampling = 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
// A virtual cluster is a way of specifying a regex matching rule against
|
|
|
|
// certain important endpoints such that statistics are generated explicitly for
|
|
|
|
// the matched requests. The reason this is useful is that when doing
|
|
|
|
// prefix/path matching Envoy does not always know what the application
|
|
|
|
// considers to be an endpoint. Thus, it’s impossible for Envoy to generically
|
|
|
|
// emit per endpoint statistics. However, often systems have highly critical
|
|
|
|
// endpoints that they wish to get “perfect” statistics on. Virtual cluster
|
|
|
|
// statistics are perfect in the sense that they are emitted on the downstream
|
|
|
|
// side such that they include network level failures.
|
|
|
|
//
|
|
|
|
// Documentation for :ref:`virtual cluster statistics <config_http_filters_router_stats>`.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// Virtual clusters are a useful tool, but we do not recommend setting up a virtual cluster for
|
|
|
|
// every application endpoint. This is both not easily maintainable and as well the matching and
|
|
|
|
// statistics output are not free.
|
|
|
|
message VirtualCluster {
|
|
|
|
reserved 1, 3;
|
|
|
|
|
|
|
|
reserved "pattern", "method";
|
|
|
|
|
|
|
|
// Specifies a list of header matchers to use for matching requests. Each specified header must
|
|
|
|
// match. The pseudo-headers `:path` and `:method` can be used to match the request path and
|
|
|
|
// method, respectively.
|
|
|
|
repeated HeaderMatcher headers = 4;
|
|
|
|
|
|
|
|
// Specifies the name of the virtual cluster. The virtual cluster name as well
|
|
|
|
// as the virtual host name are used when emitting statistics. The statistics are emitted by the
|
|
|
|
// router filter and are documented :ref:`here <config_http_filters_router_stats>`.
|
|
|
|
string name = 2 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Global rate limiting :ref:`architecture overview <arch_overview_rate_limit>`.
|
|
|
|
message RateLimit {
|
|
|
|
// [#next-free-field: 7]
|
|
|
|
message Action {
|
|
|
|
// The following descriptor entry is appended to the descriptor:
|
|
|
|
//
|
|
|
|
// .. code-block:: cpp
|
|
|
|
//
|
|
|
|
// ("source_cluster", "<local service cluster>")
|
|
|
|
//
|
|
|
|
// <local service cluster> is derived from the :option:`--service-cluster` option.
|
|
|
|
message SourceCluster {
|
|
|
|
}
|
|
|
|
|
|
|
|
// The following descriptor entry is appended to the descriptor:
|
|
|
|
//
|
|
|
|
// .. code-block:: cpp
|
|
|
|
//
|
|
|
|
// ("destination_cluster", "<routed target cluster>")
|
|
|
|
//
|
|
|
|
// Once a request matches against a route table rule, a routed cluster is determined by one of
|
|
|
|
// the following :ref:`route table configuration <envoy_api_msg_api.v3alpha.RouteConfiguration>`
|
|
|
|
// settings:
|
|
|
|
//
|
|
|
|
// * :ref:`cluster <envoy_api_field_api.v3alpha.route.RouteAction.cluster>` indicates the
|
|
|
|
// upstream cluster
|
|
|
|
// to route to.
|
|
|
|
// * :ref:`weighted_clusters <envoy_api_field_api.v3alpha.route.RouteAction.weighted_clusters>`
|
|
|
|
// chooses a cluster randomly from a set of clusters with attributed weight.
|
|
|
|
// * :ref:`cluster_header <envoy_api_field_api.v3alpha.route.RouteAction.cluster_header>`
|
|
|
|
// indicates which
|
|
|
|
// header in the request contains the target cluster.
|
|
|
|
message DestinationCluster {
|
|
|
|
}
|
|
|
|
|
|
|
|
// The following descriptor entry is appended when a header contains a key that matches the
|
|
|
|
// *header_name*:
|
|
|
|
//
|
|
|
|
// .. code-block:: cpp
|
|
|
|
//
|
|
|
|
// ("<descriptor_key>", "<header_value_queried_from_header>")
|
|
|
|
message RequestHeaders {
|
|
|
|
// The header name to be queried from the request headers. The header’s
|
|
|
|
// value is used to populate the value of the descriptor entry for the
|
|
|
|
// descriptor_key.
|
|
|
|
string header_name = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// The key to use in the descriptor entry.
|
|
|
|
string descriptor_key = 2 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// The following descriptor entry is appended to the descriptor and is populated using the
|
|
|
|
// trusted address from :ref:`x-forwarded-for <config_http_conn_man_headers_x-forwarded-for>`:
|
|
|
|
//
|
|
|
|
// .. code-block:: cpp
|
|
|
|
//
|
|
|
|
// ("remote_address", "<trusted address from x-forwarded-for>")
|
|
|
|
message RemoteAddress {
|
|
|
|
}
|
|
|
|
|
|
|
|
// The following descriptor entry is appended to the descriptor:
|
|
|
|
//
|
|
|
|
// .. code-block:: cpp
|
|
|
|
//
|
|
|
|
// ("generic_key", "<descriptor_value>")
|
|
|
|
message GenericKey {
|
|
|
|
// The value to use in the descriptor entry.
|
|
|
|
string descriptor_value = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// The following descriptor entry is appended to the descriptor:
|
|
|
|
//
|
|
|
|
// .. code-block:: cpp
|
|
|
|
//
|
|
|
|
// ("header_match", "<descriptor_value>")
|
|
|
|
message HeaderValueMatch {
|
|
|
|
// The value to use in the descriptor entry.
|
|
|
|
string descriptor_value = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// If set to true, the action will append a descriptor entry when the
|
|
|
|
// request matches the headers. If set to false, the action will append a
|
|
|
|
// descriptor entry when the request does not match the headers. The
|
|
|
|
// default value is true.
|
|
|
|
google.protobuf.BoolValue expect_match = 2;
|
|
|
|
|
|
|
|
// Specifies a set of headers that the rate limit action should match
|
|
|
|
// on. The action will check the request’s headers against all the
|
|
|
|
// specified headers in the config. A match will happen if all the
|
|
|
|
// headers in the config are present in the request with the same values
|
|
|
|
// (or based on presence if the value field is not in the config).
|
|
|
|
repeated HeaderMatcher headers = 3 [(validate.rules).repeated = {min_items: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
oneof action_specifier {
|
|
|
|
option (validate.required) = true;
|
|
|
|
|
|
|
|
// Rate limit on source cluster.
|
|
|
|
SourceCluster source_cluster = 1;
|
|
|
|
|
|
|
|
// Rate limit on destination cluster.
|
|
|
|
DestinationCluster destination_cluster = 2;
|
|
|
|
|
|
|
|
// Rate limit on request headers.
|
|
|
|
RequestHeaders request_headers = 3;
|
|
|
|
|
|
|
|
// Rate limit on remote address.
|
|
|
|
RemoteAddress remote_address = 4;
|
|
|
|
|
|
|
|
// Rate limit on a generic key.
|
|
|
|
GenericKey generic_key = 5;
|
|
|
|
|
|
|
|
// Rate limit on the existence of request headers.
|
|
|
|
HeaderValueMatch header_value_match = 6;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Refers to the stage set in the filter. The rate limit configuration only
|
|
|
|
// applies to filters with the same stage number. The default stage number is
|
|
|
|
// 0.
|
|
|
|
//
|
|
|
|
// .. note::
|
|
|
|
//
|
|
|
|
// The filter supports a range of 0 - 10 inclusively for stage numbers.
|
|
|
|
google.protobuf.UInt32Value stage = 1 [(validate.rules).uint32 = {lte: 10}];
|
|
|
|
|
|
|
|
// The key to be set in runtime to disable this rate limit configuration.
|
|
|
|
string disable_key = 2;
|
|
|
|
|
|
|
|
// A list of actions that are to be applied for this rate limit configuration.
|
|
|
|
// Order matters as the actions are processed sequentially and the descriptor
|
|
|
|
// is composed by appending descriptor entries in that sequence. If an action
|
|
|
|
// cannot append a descriptor entry, no descriptor is generated for the
|
|
|
|
// configuration. See :ref:`composing actions
|
|
|
|
// <config_http_filters_rate_limit_composing_actions>` for additional documentation.
|
|
|
|
repeated Action actions = 3 [(validate.rules).repeated = {min_items: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// .. attention::
|
|
|
|
//
|
|
|
|
// Internally, Envoy always uses the HTTP/2 *:authority* header to represent the HTTP/1 *Host*
|
|
|
|
// header. Thus, if attempting to match on *Host*, match on *:authority* instead.
|
|
|
|
//
|
|
|
|
// .. attention::
|
|
|
|
//
|
|
|
|
// To route on HTTP method, use the special HTTP/2 *:method* header. This works for both
|
|
|
|
// HTTP/1 and HTTP/2 as Envoy normalizes headers. E.g.,
|
|
|
|
//
|
|
|
|
// .. code-block:: json
|
|
|
|
//
|
|
|
|
// {
|
|
|
|
// "name": ":method",
|
|
|
|
// "exact_match": "POST"
|
|
|
|
// }
|
|
|
|
//
|
|
|
|
// .. attention::
|
|
|
|
// In the absence of any header match specifier, match will default to :ref:`present_match
|
|
|
|
// <envoy_api_field_api.v3alpha.route.HeaderMatcher.present_match>`. i.e, a request that has the
|
|
|
|
// :ref:`name <envoy_api_field_api.v3alpha.route.HeaderMatcher.name>` header will match,
|
|
|
|
// regardless of the header's value.
|
|
|
|
//
|
|
|
|
// [#next-major-version: HeaderMatcher should be refactored to use StringMatcher.]
|
|
|
|
// [#next-free-field: 12]
|
|
|
|
message HeaderMatcher {
|
|
|
|
reserved 2, 3, 5;
|
|
|
|
|
|
|
|
reserved "regex_match";
|
|
|
|
|
|
|
|
// Specifies the name of the header in the request.
|
|
|
|
string name = 1 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// Specifies how the header match will be performed to route the request.
|
|
|
|
oneof header_match_specifier {
|
|
|
|
// If specified, header match will be performed based on the value of the header.
|
|
|
|
string exact_match = 4;
|
|
|
|
|
|
|
|
// If specified, this regex string is a regular expression rule which implies the entire request
|
|
|
|
// header value must match the regex. The rule will not match if only a subsequence of the
|
|
|
|
// request header value matches the regex.
|
|
|
|
type.matcher.v3alpha.RegexMatcher safe_regex_match = 11;
|
|
|
|
|
|
|
|
// If specified, header match will be performed based on range.
|
|
|
|
// The rule will match if the request header value is within this range.
|
|
|
|
// The entire request header value must represent an integer in base 10 notation: consisting of
|
|
|
|
// an optional plus or minus sign followed by a sequence of digits. The rule will not match if
|
|
|
|
// the header value does not represent an integer. Match will fail for empty values, floating
|
|
|
|
// point numbers or if only a subsequence of the header value is an integer.
|
|
|
|
//
|
|
|
|
// Examples:
|
|
|
|
//
|
|
|
|
// * For range [-10,0), route will match for header value -1, but not for 0, "somestring", 10.9,
|
|
|
|
// "-1somestring"
|
|
|
|
type.v3alpha.Int64Range range_match = 6;
|
|
|
|
|
|
|
|
// If specified, header match will be performed based on whether the header is in the
|
|
|
|
// request.
|
|
|
|
bool present_match = 7;
|
|
|
|
|
|
|
|
// If specified, header match will be performed based on the prefix of the header value.
|
|
|
|
// Note: empty prefix is not allowed, please use present_match instead.
|
|
|
|
//
|
|
|
|
// Examples:
|
|
|
|
//
|
|
|
|
// * The prefix *abcd* matches the value *abcdxyz*, but not for *abcxyz*.
|
|
|
|
string prefix_match = 9 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
|
|
|
|
// If specified, header match will be performed based on the suffix of the header value.
|
|
|
|
// Note: empty suffix is not allowed, please use present_match instead.
|
|
|
|
//
|
|
|
|
// Examples:
|
|
|
|
//
|
|
|
|
// * The suffix *abcd* matches the value *xyzabcd*, but not for *xyzbcd*.
|
|
|
|
string suffix_match = 10 [(validate.rules).string = {min_bytes: 1}];
|
|
|
|
}
|
|
|
|
|
|
|
|
// If specified, the match result will be inverted before checking. Defaults to false.
|
|
|
|
//
|
|
|
|
// Examples:
|
|
|
|
//
|
|
|
|
// * The regex ``\d{3}`` does not match the value *1234*, so it will match when inverted.
|
|
|
|
// * The range [-10,0) will match the value -1, so it will not match when inverted.
|
|
|
|
bool invert_match = 8;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Query parameter matching treats the query string of a request's :path header
|
|
|
|
// as an ampersand-separated list of keys and/or key=value elements.
|
|
|
|
// [#next-free-field: 7]
|
|
|
|
message QueryParameterMatcher {
|
|
|
|
reserved 3, 4;
|
|
|
|
|
|
|
|
reserved "value", "regex";
|
|
|
|
|
|
|
|
// Specifies the name of a key that must be present in the requested
|
|
|
|
// *path*'s query string.
|
|
|
|
string name = 1 [(validate.rules).string = {min_bytes: 1 max_bytes: 1024}];
|
|
|
|
|
|
|
|
oneof query_parameter_match_specifier {
|
|
|
|
// Specifies whether a query parameter value should match against a string.
|
|
|
|
type.matcher.v3alpha.StringMatcher string_match = 5
|
|
|
|
[(validate.rules).message = {required: true}];
|
|
|
|
|
|
|
|
// Specifies whether a query parameter should be present.
|
|
|
|
bool present_match = 6;
|
|
|
|
}
|
|
|
|
}
|