Deno - ClickHouse Documentation

This guide Integrates the following:

Logs

Currently only supports OpenTelemetry Logging. For tracing support, see the following guide.

Logging

Logging is supported by exporting a custom logger for the std/log module. Example usage:

import * as log from 'https://deno.land/std@0.203.0/log/mod.ts';
import { OpenTelemetryHandler } from 'npm:@hyperdx/deno';

log.setup({
  handlers: {
    otel: new OpenTelemetryHandler('DEBUG'),
  },

  loggers: {
    'my-otel-logger': {
      level: 'DEBUG',
      handlers: ['otel'],
    },
  },
});

log.getLogger('my-otel-logger').info('Hello from Deno!');

Run the application

Managed ClickStack
ClickStack Open Source

OTEL_EXPORTER_OTLP_ENDPOINT=http://your-otel-collector:4318 \
OTEL_SERVICE_NAME="<NAME_OF_YOUR_APP_OR_SERVICE>" \
deno run --allow-net --allow-env --allow-read --allow-sys --allow-run app.ts

OTEL_EXPORTER_OTLP_HEADERS="authorization=<YOUR_INGESTION_API_KEY>" \
OTEL_EXPORTER_OTLP_ENDPOINT=http://your-otel-collector:4318 \
OTEL_SERVICE_NAME="<NAME_OF_YOUR_APP_OR_SERVICE>" \
deno run --allow-net --allow-env --allow-read --allow-sys --allow-run app.ts

Last modified on July 2, 2026

NestJSNestJS SDK for ClickStack - The ClickHouse Observability Stack

​Logging

​Run the application

Logging

Run the application