{
   "listeners":[
      {
         "address":"tcp://0.0.0.0:80",
         "filters":[
            {
               "type":"read",
               "name":"http_connection_manager",
               "config":{
                  "codec_type":"auto",
                  "stat_prefix":"ingress_http",
                  "use_remote_address":true,
                  "idle_timeout_s": 10,
                  "tracing":{
                     "operation_name":"egress"
                  },
                  "route_config":
		  {
                    "virtual_hosts":
                     [
                       {
                           "name" : "backend",
                           "domains" : ["*"],
                           "routes" : [
                               { 
                                 "prefix" : "/",
                                 "cluster": "grpc_cluster",
                                 "hash_policy": {
                                   "header_name": "x-forwarded-for"
                                 },
				 "shadow": {
                                    "cluster": "grpc_cluster_shadow"
				 }
                               }
                           ]
                        } 
                      ]
                   },
                  "filters":[
                     {
                        "type":"both",
                        "name":"health_check",
                        "config":{
                           "pass_through_mode":false,
                           "endpoint":"/healthcheck"
                        }
                     },
                     {
                        "type":"decoder",
                        "name":"router",
                        "config":{

                        }
                     }
                  ],
                  "access_log":[
                     {
                        "path":"/dev/stdout"
                     }
                  ]
               }
            }
         ]
      }
   ],
   "admin":{
      "access_log_path":"./envoy_admin.log",
      "address":"tcp://0.0.0.0:8080"
   },
   "cluster_manager":{
      "clusters":[
         {
            "name":"rds_cluster",
            "type":"strict_dns",
            "connect_timeout_ms":2500,
            "lb_type":"round_robin",
            "hosts":[
               {
                  "url":"tcp://eds.envoy.xlsoa:1949"
               }
            ]
         },
         {
            "name":"grpc_cluster",
            "type":"static",
            "connect_timeout_ms":2500,
            "lb_type":"ring_hash",
	    "features" : "http2",
            "ring_hash_lb_config": {
              "minimum_ring_size": 1024,
              "use_std_hash": false
            }, 
            "hosts":[{"url":"tcp://10.10.62.120:50051"}]
         },
         {
            "name":"grpc_cluster_shadow",
            "type":"static",
            "connect_timeout_ms":2500,
            "lb_type":"ring_hash",
	    "features" : "http2",
            "ring_hash_lb_config": {
              "minimum_ring_size": 1024,
              "use_std_hash": false
            }, 
            "hosts":[{"url":"tcp://10.10.62.121:50051"}]
         }
      ],
      "sds":{
         "cluster":{
            "name":"sds_cluster",
            "type":"strict_dns",
            "connect_timeout_ms":3000,
            "lb_type":"round_robin",
            "hosts":[
               {
                  "url":"tcp://eds.envoy.xlsoa:1949"
               }
            ]
         },
         "refresh_delay_ms":30000
      },
      "cds":{
         "cluster":{
            "name":"cds_cluster",
            "type":"strict_dns",
            "connect_timeout_ms":3000,
            "lb_type":"round_robin",
            "hosts":[
               {
                  "url":"tcp://eds.envoy.xlsoa:1949"
               }
            ]
         },
         "refresh_delay_ms":30000
      }
   }
}