krakend-otel/example/docker_compose/conf/krakend_front/configuration.json

{
    "version": 3,
    "name": "Front KrakenD",
    "port": 44444,
    "cache_ttl": "3600s",
    "timeout": "2500ms",
    "host": [ "http://krakend_middle:44445/" ],
    "endpoints": [
        {
            "endpoint": "/fake/{something}",
            "concurrent_calls": 3,
            "backend": [
                {
                    "url_pattern": "/middle_fake/{something}"
                }
            ]
        },
        {
            "endpoint": "/combination/{id}",
            "backend": [
                {
                    "url_pattern": "/middle_combination/{id}",
                    "group": "front_1"
                },
                {
                    "url_pattern": "/middle_combination/{id}",
                    "group": "front_2"
                }
            ]
        },
        {
            "endpoint": "/direct/slow",
            "backend": [
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/foo.json",
                    "group": "data"
                },
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/bar.json",
                    "group": "data"
                },
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/stats"
                }
            ]
        },
        {
            "endpoint": "/direct/drop",
            "backend": [
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/drop/"
                },
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/stats"
                }
            ]
        },
        {
            "endpoint": "/direct/delayed",
            "backend": [
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/delayed/"
                },
                {
                    "host": ["http://fakeapi:9876"],
                    "url_pattern": "/file"
                }
            ]
        }
    ],
    "extra_config": {
        "telemetry/opentelemetry": {
            "service_name": "krakend_frontend_service",
            "metric_reporting_period": 1,
            "trace_sample_rate": 1,
            "layers": {
                "global": {
                    "disable_metrics": false,
                    "disable_traces": false,
                    "disable_propagation": false,
                    "report_headers": true
                },
                "proxy": {
                    "disable_metrics": false,
                    "disable_traces": false,
                    "report_headers": true
                }, 
                "backend": {
                    "metrics": {
                        "disable_stage": false,
                        "round_trip": true,
                        "read_payload": true,
                        "detailed_connection": true,
                        "static_attributes": [
                            {
                                "key": "my_metric_attr",
                                "value": "my_metric_val"
                            }
                        ]
                    },
                    "traces": {
                        "disable_stage": false,
                        "round_trip": true,
                        "read_payload": true,
                        "detailed_connection": true,
                        "static_attributes": [
                            {
                                "key": "my_trace_attr",
                                "value": "my_trace_val" 
                            }
                        ],
                        "report_headers": true
                    }
                }
            },
            "exporters": {
                "prometheus": [
                    {
                        "name": "local_prometheus",
                        "port": 9090,
                        "process_metrics": true,
                        "go_metrics": true
                    }
                ],
                "otlp": [
                    {
                        "name": "local_tempo",
                        "host": "tempo",
                        "port": 4317,
                        "use_http": false,
                        "disable_metrics": true
                    },
                    { 
                        "name": "local_jaeger",
                        "host": "jaeger",
                        "port": 4317,
                        "use_http": false,
                        "disable_metrics": true
                    }
                ]
            }
        }
    }
}