Cannot register "/" path for JSON transcoding #14561
Description
Title: Cannot register '/' path for JSON transcoding
Description:
Envoy crashes when starting up with a JSON transcoding path at the root ("/").
Repro steps:
syntax = "proto3";
package svctest;
import "google/api/annotations.proto";
message HelloRequest {}
message HelloResponse {
string message = 1;
}
service Hello {
rpc Hello(HelloRequest) returns (HelloResponse) {
option (google.api.http) = {
// get: "/root" // this works
get: "/" // this fails
};
}
}Config:
[Unit]
Description=Envoy
After=docker-credential-gcr.service config-firewall.service svc-test-external-hello-v2.service
Wants=docker-credential-gcr.service config-firewall.service svc-test-external-hello-v2.service
[Service]
Restart=always
Environment="HOME=/home/envoy"
# ExecStartPre=/usr/bin/docker-credential-gcr configure-docker --registries=gcr.io
ExecStart=/usr/bin/docker run --name=envoy \
--log-opt tag=\"envoy\" \
--rm \
--user 2000 \
--net container:svc-test-external-hello-v2 \
gcr.io/endpoints-release/endpoints-runtime:2 \
--service svctest.endpoints.project-id.cloud.goog \
--listener_port 8081 \
--backend grpc://127.0.0.1:8080 \
--rollout_strategy managed
ExecStop=/usr/bin/docker stop envoy
ExecStopPost=/usr/bin/docker rm envoyLogs:
Many repetitions of:
Jan 05 06:38:07 svc-test-external-inst-041z docker[1761]: W0105 06:38:07.000 20 envoy] [20][config]gRPC config for type.googleapis.com/envoy.config.listener.v3.Listener rejected: Error adding/updating listener(s) ingress_listener: transcoding_filter: Cannot register \'svctest.Hello.Hello\' to path matcher
More log here: https://gist.github.com/vsekhar/1f207da2539306092f5341b93ed8dc9e#file-journalctl-u-envoy-service