Exports logs to OpenTelemetry Collector using OTLP protocol
npm install otlp-logger

Sends logs in the OpenTelemetry Log Data Model to an OTLP logs collector.
``bash`
npm i otlp-logger
can be set to http/protobuf, grpc, http or console by using
* env var OTEL_EXPORTER_OTLP_PROTOCOLOTEL_EXPORTER_OTLP_LOGS_PROTOCOL
* env var
* setting the exporterProtocol option
Settings configured programmatically take precedence over environment variables. Per-signal environment variables take precedence over non-per-signal environment variables. This principle applies to all the configurations in this module.
If no protocol is specified, http/protobuf is used as a default.
#### Collector URL
Set either of the following environment variables:
OTEL_EXPORTER_OTLP_LOGS_ENDPOINT,OTEL_EXPORTER_OTLP_ENDPOINT
#### Protocol-specific exporter configuration
#### http/protobuf
#### grpc
Environment Variable Configuration
#### http
#### Processor-specific configuration
If batch log processor is selected (is default), it can be configured using env vars described in the OpenTelemetry specification
When using the transport, the following options can be used to configure the transport programmatically:
* loggerName: name to be used by the OpenTelemetry loggerserviceVersion
* : version to be used by the OpenTelemetry loggerresourceAttributes
* : Object containing resource attributes. OptionallogRecordProcessorOptions
* : a single object or an array of objects specifying the LogProcessor and LogExporter types and constructor params. Optional
Make sure you have access to an OTEL collector.
To start quickly, create a minimal configuration for OTEL collector in the otel-collector-config.yaml file:
`yaml
receivers:
otlp:
protocols:
grpc:
exporters:
file:
path: ./etc/test-logs/otlp-logs.log
flush_interval: 1
logging:
verbosity: basic
processors:
batch:
service:
pipelines:
logs:
receivers: [otlp]
processors: []
exporters: [logging, file]
`
The collector can then be ran with:
`bash`
docker run --volume=$(pwd)/otel-collector-config.yaml:/etc/otel-collector-config.yaml:rw --volume=/tmp/test-logs:/etc/test-logs:rw -p 4317:4317 -d otel/opentelemetry-collector-contrib:0.103.1 --config=/etc/otel-collector-config.yaml
Create an index.js file containing
`js
const { getOtlpLogger } = require('otlp-logger')
const logger = getOtlpLogger({
loggerName: 'test',
serviceVersion: '1.0.0'
})
logger.emit({
severityNumber: 1,
severityText: 'TRACE',
body: 'test',
timestamp: Date.now()
})
`
Run the service setting the OTEL_EXPORTER_OTLP_LOGS_ENDPOINT and OTEL_RESOURCE_ATTRIBUTES env vars
`bash``
OTEL_EXPORTER_OTLP_LOGS_PROTOCOL='grpc' OTEL_EXPORTER_OTLP_LOGS_ENDPOINT=http://localhost:4317 OTEL_RESOURCE_ATTRIBUTES="service.name=my-service,service.version=1.2.3" node index.js
MIT