config.alloy

otelcol.receiver.otlp "default" {
	grpc { }

	output {
		metrics = [
		    otelcol.processor.transform.add_resource_attributes_as_metric_attributes.input,
        ]
		traces  = [
		    // This transforms the traces in metrics, we still have to send traces out
            otelcol.connector.spanmetrics.asgi_apm.input,
		    // This also transforms the traces in metrics, we still have to send traces out
		    otelcol.connector.host_info.default.input,
		    // This sends the traces out
            otelcol.processor.batch.default.input,
		]
		logs    = [
		    otelcol.processor.batch.default.input,
		]
	}
}

otelcol.connector.host_info "default" {
  // https://grafana.com/docs/alloy/latest/reference/components/otelcol.connector.host_info/
  host_identifiers = ["host.name"]

  output {
    metrics = [otelcol.processor.batch.default.input]
  }
}

otelcol.connector.spanmetrics "asgi_apm" {
  dimension {
    name = "http.status_code"
  }

  dimension {
    name = "http.method"
  }

  dimension {
    name = "http.route"
  }

  histogram {
    explicit {
        buckets = ["2ms", "4ms", "6ms", "8ms", "10ms", "50ms", "100ms", "200ms", "400ms", "800ms", "1s", "1400ms", "2s", "5s", "10s", "15s"]
    }
  }

  output {
    metrics = [otelcol.processor.transform.add_resource_attributes_as_metric_attributes.input]
  }
}

otelcol.processor.transform "add_resource_attributes_as_metric_attributes" {
	error_mode = "ignore"

	metric_statements {
		context    = "datapoint"
		statements = [
			"set(attributes[\"deployment.environment\"], resource.attributes[\"deployment.environment\"])",
			"set(attributes[\"service.version\"], resource.attributes[\"service.version\"])",
		]
	}

	output {
        metrics = [otelcol.processor.batch.default.input]
    }
}

otelcol.processor.batch "default" {
	output {
		// metrics = [otelcol.exporter.otlphttp.grafanacloud.input]
		// logs    = [otelcol.exporter.otlphttp.grafanacloud.input]
		// traces  = [otelcol.exporter.otlphttp.grafanacloud.input]

		metrics = [otelcol.exporter.debug.console.input]
		logs    = [otelcol.exporter.debug.console.input]
		traces  = [otelcol.exporter.otlp.jaeger.input]
	}
}

otelcol.exporter.otlp "jaeger" {
	client {
		endpoint = "jaeger:4317"

		tls {
			insecure = true
		}
	}
}

otelcol.exporter.debug "console" {
	verbosity = "Detailed"
}


// otelcol.auth.basic "grafanacloud" {
//   username = sys.env("GC_USERNAME")
//   password = sys.env("GC_PASSWORD")
// }
//
// otelcol.exporter.otlphttp "grafanacloud" {
//   client {
//     endpoint = sys.env("GC_ENDPOINT")
//     auth     = otelcol.auth.basic.grafanacloud.handler
//   }
// }