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build: add otel env vars #692

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merged 1 commit into from
Jan 27, 2025
Merged

build: add otel env vars #692

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19 changes: 12 additions & 7 deletions server/instrumentation.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,9 @@ const { diag, DiagLogLevel, DiagConsoleLogger } = require('@opentelemetry/api')

const pkg = require('../package.json')

require('dotenv').config()
if (process.env.NODE_ENV !== 'production') {
require('dotenv').config()
}

const instrumentationEnabled =
process.env.GRAFANA_INSTRUMENTATION_ENABLED !== 'false' // default to true
Expand All @@ -32,6 +34,11 @@ const endpoint = process.env.GRAFANA_OTLP_ENDPOINT
const instanceId = process.env.GRAFANA_INSTANCE_ID
const apiKey = process.env.GRAFANA_API_KEY
const environment = process.env.GRAFANA_ENVIRONMENT ?? 'development'
const base64Key = Buffer.from(`${instanceId}:${apiKey}`).toString('base64')
const authorizationHeader = `Basic ${base64Key}`

process.env.OTEL_EXPORTER_OTLP_ENDPOINT = endpoint
process.env.OTEL_EXPORTER_OTLP_HEADERS = authorizationHeader

if (!instrumentationEnabled) {
console.warn('Grafana instrumentation disabled, skipping.')
Expand All @@ -48,8 +55,6 @@ console.log(
`Starting Grafana instrumentation on '${endpoint}', instance '${instanceId}'...`
)

const base64Key = Buffer.from(`${instanceId}:${apiKey}`).toString('base64')

const sdk = new NodeSDK({
resource: new Resource({
[ATTR_SERVICE_NAME]: 'optic',
Expand All @@ -60,27 +65,27 @@ const sdk = new NodeSDK({
traceExporter: new OTLPTraceExporter({
url: `${endpoint}/v1/traces`,
headers: {
Authorization: `Basic ${base64Key}`
Authorization: authorizationHeader
}
}),
metricReader: new PeriodicExportingMetricReader({
exporter: new OTLPMetricExporter({
url: `${endpoint}/v1/metrics`,
headers: {
Authorization: `Basic ${base64Key}`
Authorization: authorizationHeader
}
})
}),
instrumentations: [getNodeAutoInstrumentations()]
})

sdk.start()

if (diagnosticsEnabled) {
console.log('Grafana OTLP diagnostics enabled.')
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.VERBOSE)
}

sdk.start()

console.log(
`Grafana instrumentation started successfully on '${endpoint}', instance '${instanceId}'.`
)
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