golang extension: implement cluster_specifier_plugin to choose cluster dynamically (#25677)

* wip: cluster specifier.

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* goland happy.

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* go module build ok.

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* resue the utils module.

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* golang filter test ok.

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* wip: C++ not compile ok yet.

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* c++ compile ok.

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* simple work.

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* change go.mod.

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* http filters test passed.

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* prepare cluster test.

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* cluster specifier test.

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* cluster specifier: make the headermap API simple.

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* test compile.

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* code tweak.

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* configFactory.

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* compile ok.

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* test: default_cluster.

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* tweak.

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* recover panic.

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* validator plugin_id from golang.

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* fix format.

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* make deps simplier.

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* tweak proto comments.

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* update go.mod.

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* format tweak.

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* add metadata.

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* add extenstion categories.

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* add doc.

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* doc cluster_specifier.

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* doc: extension category

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* used registry in Go filter plugin.

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* update deps.

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* upgrade golang/x/* version.

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* fix dso test.

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* revert change in examples/grpc-bridge/server/go.mod.

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* address comments.

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* style fix: NOLINT(readability-identifier-naming)

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* remove unused function.

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* clang code style fix.

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* address comments.

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* refactor dso load and Go API regsitry.

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* rename http/cluster_specifier => router/cluster_specifier.

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* address comments.

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* protected => private.

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* works.

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* fix format.

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* fix clang tidy.

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* address comments.

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* fix format.

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---------

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Mirrored from https://github.com/envoyproxy/envoy @ 3c7612f595f67fd8905e172129b09d5dce66a89a
pull/626/head
data-plane-api(Azure Pipelines) 2 years ago
parent ed87422da6
commit 2f68fd3c2e
  1. 1
      BUILD
  2. 12
      contrib/envoy/extensions/router/cluster_specifier/golang/v3alpha/BUILD
  3. 51
      contrib/envoy/extensions/router/cluster_specifier/golang/v3alpha/golang.proto
  4. 1
      versioning/BUILD

@ -96,6 +96,7 @@ proto_library(
"//contrib/envoy/extensions/private_key_providers/cryptomb/v3alpha:pkg",
"//contrib/envoy/extensions/private_key_providers/qat/v3alpha:pkg",
"//contrib/envoy/extensions/regex_engines/hyperscan/v3alpha:pkg",
"//contrib/envoy/extensions/router/cluster_specifier/golang/v3alpha:pkg",
"//contrib/envoy/extensions/vcl/v3alpha:pkg",
"//envoy/admin/v3:pkg",
"//envoy/config/accesslog/v3:pkg",

@ -0,0 +1,12 @@
# DO NOT EDIT. This file is generated by tools/proto_format/proto_sync.py.
load("@envoy_api//bazel:api_build_system.bzl", "api_proto_package")
licenses(["notice"]) # Apache 2
api_proto_package(
deps = [
"@com_github_cncf_udpa//udpa/annotations:pkg",
"@com_github_cncf_udpa//xds/annotations/v3:pkg",
],
)

@ -0,0 +1,51 @@
syntax = "proto3";
package envoy.extensions.router.cluster_specifier.golang.v3alpha;
import "google/protobuf/any.proto";
import "xds/annotations/v3/status.proto";
import "udpa/annotations/status.proto";
import "validate/validate.proto";
option java_package = "io.envoyproxy.envoy.extensions.router.cluster_specifier.golang.v3alpha";
option java_outer_classname = "GolangProto";
option java_multiple_files = true;
option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/router/cluster_specifier/golang/v3alpha";
option (udpa.annotations.file_status).package_version_status = ACTIVE;
option (xds.annotations.v3.file_status).work_in_progress = true;
// [#protodoc-title: Golang]
//
// For an overview of the Golang cluster specifier please see the :ref:`configuration reference documentation <config_http_cluster_specifier_golang>`.
// [#extension: envoy.router.cluster_specifier_plugin.golang]
// [#extension-category: envoy.router.cluster_specifier_plugin]
message Config {
// Globally unique ID for a dynamic library file.
string library_id = 1 [(validate.rules).string = {min_len: 1}];
// Path to a dynamic library implementing the
// :repo:`ClusterSpecifier API <contrib/golang/router/cluster_specifier/source/go/pkg/api.ClusterSpecifier>`
// interface.
// [#comment:TODO(wangfakang): Support for downloading libraries from remote repositories.]
string library_path = 2 [(validate.rules).string = {min_len: 1}];
// Default cluster.
//
// It will be used when the specifier interface return empty string or panic.
//
string default_cluster = 3 [(validate.rules).string = {min_len: 1}];
// Configuration for the Go cluster specifier plugin.
//
// .. note::
// This configuration is only parsed in the go cluster specifier, and is therefore not validated
// by Envoy.
//
// See the :repo:`StreamFilter API <contrib/golang/router/cluster_specifier/source/go/pkg/cluster_specifier/config.go>`
// for more information about how the plugin's configuration data can be accessed.
//
google.protobuf.Any config = 4;
}

@ -34,6 +34,7 @@ proto_library(
"//contrib/envoy/extensions/private_key_providers/cryptomb/v3alpha:pkg",
"//contrib/envoy/extensions/private_key_providers/qat/v3alpha:pkg",
"//contrib/envoy/extensions/regex_engines/hyperscan/v3alpha:pkg",
"//contrib/envoy/extensions/router/cluster_specifier/golang/v3alpha:pkg",
"//contrib/envoy/extensions/vcl/v3alpha:pkg",
"//envoy/admin/v3:pkg",
"//envoy/config/accesslog/v3:pkg",

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