krakend-otel/example/docker_compose/conf.local/krakend_middle/configuration.json

{
    "version": 3,
    "name": "Middle KrakenD",
    "port": 54445,
    "cache_ttl": "3600s",
    "timeout": "2500ms",
    "host": [ "http://127.0.0.1:54446/" ],
    "endpoints": [
        {
            "endpoint": "/middle_fake/{something}",
            "concurrent_calls": 3,
            "backend": [
                {
                    "url_pattern": "/back_fake/{something}"
                }
            ]
        },
        {
            "endpoint": "/middle_combination/{id}",
            "backend": [
                {
                    "url_pattern": "/back_combination/{id}",
                    "group": "middle_1"
                },
                {
                    "url_pattern": "/back_combination/{id}",
                    "group": "middle_2"
                }
            ]
        }
    ],
    "extra_config": {
        "telemetry/opentelemetry": {
            "service_name": "krakend_middle_service",
            "metric_reporting_period": 1,
            "trace_sample_rate": 1,
            "layers": {
                "global": {
                    "disable_metrics": false,
                    "disable_traces": false,
                    "disable_propagation": false
                },
                "proxy": {
                    "disable_metrics": false,
                    "disable_traces": false
                }, 
                "backend": {
                    "metrics": {
                        "disable_stage": false,
                        "round_trip": true,
                        "read_payload": true,
                        "detailed_connection": true,
                        "static_attributes": [
                            {
                                "key": "my_metric_attr",
                                "value": "my_middle_metric"
                            }
                        ]
                    },
                    "traces": {
                        "disable_stage": false,
                        "round_trip": true,
                        "read_payload": true,
                        "detailed_connection": true,
                        "static_attributes": [
                            {
                                "key": "my_trace_attr",
                                "value": "my_middle_trace" 
                            }
                        ]
                    }
                }
            },
            "exporters": {
                "prometheus": [
                    {
                        "name": "local_prometheus",
                        "port": 59092,
                        "process_metrics": true,
                        "go_metrics": true
                    }
                ],
                "otlp": [
                    {
                        "name": "local_tempo",
                        "host": "127.0.0.1",
                        "port": 53317,
                        "use_http": false,
                        "disable_metrics": true
                    },
                    {
                        "name": "local_jaeger",
                        "host": "127.0.0.1",
                        "port": 55317,
                        "use_http": false,
                        "disable_metrics": true
                    }
                ]
            }
        }
    }
}