from opentelemetry import metrics
from opentelemetry.exporter.otlp.proto.http.metric_exporter import OTLPMetricExporter
from opentelemetry.sdk.metrics import MeterProvider
from opentelemetry.sdk.metrics.export import PeriodicExportingMetricReader
from opentelemetry.sdk.resources import Resource

resource = Resource.create(
    {
        "service.name": "checkout-service",
        "deployment.environment.name": "dev",
    }
)

exporter = OTLPMetricExporter(endpoint="http://localhost:4318/v1/metrics")
reader = PeriodicExportingMetricReader(exporter, export_interval_millis=1000)
provider = MeterProvider(resource=resource, metric_readers=[reader])
metrics.set_meter_provider(provider)

meter = metrics.get_meter("checkout.metrics")
checkout_counter = meter.create_counter(
    "checkout.completed",
    unit="1",
    description="Completed checkout requests",
)

checkout_counter.add(
    1,
    {
        "checkout.region": "ap-southeast",
        "payment.method": "card",
    },
)
checkout_counter.add(
    2,
    {
        "checkout.region": "ap-southeast",
        "payment.method": "card",
    },
)

provider.force_flush()
provider.shutdown()

print("recorded checkout.completed count=3 region=ap-southeast payment=card")
print("exported metrics to http://localhost:4318/v1/metrics")