PetAdoptions/petsearch-java/src/main/java/ca/petsearch/MetricEmitter.java [27:64]:
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    public MetricEmitter() {
        Meter meter = GlobalMeterProvider.get().meterBuilder("aws-otel").setInstrumentationVersion("1.0").build();

        logger.debug("OTLP port is: " + System.getenv("OTEL_EXPORTER_OTLP_ENDPOINT"));

        String latencyMetricName = API_LATENCY_METRIC;
        String apiBytesSentMetricName = API_COUNTER_METRIC;
        String petsReturnedMetricName = PETS_RETURNED_METRIC;

        String instanceId = System.getenv("INSTANCE_ID");
        if (instanceId != null && !instanceId.trim().equals("")) {
            latencyMetricName = API_LATENCY_METRIC + "_" + instanceId;
            apiBytesSentMetricName = API_COUNTER_METRIC + "_" + instanceId;
            petsReturnedMetricName = PETS_RETURNED_METRIC + "_" + instanceId;
        }

        apiBytesSentCounter =
                meter
                        .counterBuilder(apiBytesSentMetricName)
                        .setDescription("API request load sent in bytes")
                        .setUnit("one")
                        .build();

        petsReturned =
                meter
                        .counterBuilder(petsReturnedMetricName)
                        .setDescription("Number of pets returned by this service")
                        .setUnit("one")
                        .build();


        apiLatencyHistogram =
                meter
                        .histogramBuilder(latencyMetricName).ofLongs()
                        .setDescription("API latency time")
                        .setUnit("ms")
                        .build();
    }
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PetAdoptions/cdk/pet_stack/resources/microservices/petsearch-java/src/main/java/ca/petsearch/MetricEmitter.java [27:64]:
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    public MetricEmitter() {
        Meter meter = GlobalMeterProvider.get().meterBuilder("aws-otel").setInstrumentationVersion("1.0").build();

        logger.debug("OTLP port is: " + System.getenv("OTEL_EXPORTER_OTLP_ENDPOINT"));

        String latencyMetricName = API_LATENCY_METRIC;
        String apiBytesSentMetricName = API_COUNTER_METRIC;
        String petsReturnedMetricName = PETS_RETURNED_METRIC;

        String instanceId = System.getenv("INSTANCE_ID");
        if (instanceId != null && !instanceId.trim().equals("")) {
            latencyMetricName = API_LATENCY_METRIC + "_" + instanceId;
            apiBytesSentMetricName = API_COUNTER_METRIC + "_" + instanceId;
            petsReturnedMetricName = PETS_RETURNED_METRIC + "_" + instanceId;
        }

        apiBytesSentCounter =
                meter
                        .counterBuilder(apiBytesSentMetricName)
                        .setDescription("API request load sent in bytes")
                        .setUnit("one")
                        .build();

        petsReturned =
                meter
                        .counterBuilder(petsReturnedMetricName)
                        .setDescription("Number of pets returned by this service")
                        .setUnit("one")
                        .build();


        apiLatencyHistogram =
                meter
                        .histogramBuilder(latencyMetricName).ofLongs()
                        .setDescription("API latency time")
                        .setUnit("ms")
                        .build();
    }
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