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// SPDX-License-Identifier: Apache-2.0
import { type AttrMap } from './types.js';
import { Configuration, type EndpointTuple } from './config.js';
import { ResourceAttributes } from './attributes.js';
import { AnacondaCommon } from "./common.js";
import { MetricExporterShim } from './exporter_shims.js';
// ----- your value imports (keep as-is) -----
import { diag, DiagConsoleLogger, DiagLogLevel } from '@opentelemetry/api';
import * as sdkMetricsNS from '@opentelemetry/sdk-metrics';
const {
MeterProvider,
PeriodicExportingMetricReader,
ConsoleMetricExporter,
} = sdkMetricsNS;
import * as httpNS from '@opentelemetry/exporter-metrics-otlp-http';
const { OTLPMetricExporter: OTLPMetricExporterHTTP } = httpNS;
import * as grpcExporterNS from '@opentelemetry/exporter-metrics-otlp-grpc';
const { OTLPMetricExporter: OTLPMetricExporterGRPC } = grpcExporterNS;
import grpc from '@grpc/grpc-js';
const { ChannelCredentials } = grpc;
// ----- type-only imports -----
import type {
Meter,
UpDownCounter,
Counter,
Histogram,
} from '@opentelemetry/api';
import type {
PushMetricExporter,
ResourceMetrics,
MeterProvider as _MeterProvider,
PeriodicExportingMetricReader as _PeriodicExportingMetricReader,
PeriodicExportingMetricReaderOptions as _PeriodicExportingMetricReaderOptions,
} from '@opentelemetry/sdk-metrics';
import type { ChannelCredentials as _ChannelCredentials } from '@grpc/grpc-js';
// ----- local type aliases that REUSE the value names -----
type MeterProvider = _MeterProvider;
type PeriodicExportingMetricReader = _PeriodicExportingMetricReader;
type ChannelCredentials = _ChannelCredentials;
type PeriodicExportingMetricReaderOptions = _PeriodicExportingMetricReaderOptions;
export class CounterArgs {
name: string = "";
by?: number = 1;
forceUpDownCounter?: boolean = false;
attributes?: AttrMap = {}
}
export class HistogramArgs {
name: string = "";
value: number = 0;
attributes?: AttrMap = {};
}
export class AnacondaMetrics extends AnacondaCommon {
private reader: PeriodicExportingMetricReader | undefined;
mapOfCounters: Record<string, [UpDownCounter | Counter, boolean]> = {};
mapOfHistograms: Record<string, Histogram> = {};
meterProvider: MeterProvider | undefined = undefined
meter: Meter | null = null;
parentExporter: MetricExporterShim | undefined
testLastBy: number = 0
constructor(config: Configuration, attributes: ResourceAttributes) {
super(config, attributes);
if (this.isValidOtelUrl(this.config.getMetricsEndpointTuple()[0].href) === false) {
console.error(`The metrics endpoint URL is not valid: ${this.config.getMetricsEndpointTuple()[0].href}`)
return
}
this.setup()
}
async changeConnection(endpoint: URL | undefined, authToken: string | undefined,
certFile: string | undefined, userId: string | undefined): Promise<boolean> {
if (endpoint && this.isValidOtelUrl(endpoint!.href) === false) {
console.error(`The metrics endpoint URL is not valid: ${endpoint!.href}`)
return false
}
let [url, token, cert] = this.config.getMetricsEndpointTuple()
if (endpoint !== url && endpoint !== undefined) {
this.config.metricsEndpoint![0] = endpoint
}
if (authToken !== token) {
this.config.metricsEndpoint![1] = authToken
}
if (certFile !== cert) {
this.config.metricsEndpoint![2] = certFile
}
let id = userId?.trim()
if (typeof id === 'string' && id.length > 0) {
this.attributes.userId = id
}
var [scheme, ep] = this.transformURL(this.config.metricsEndpoint![0])
var creds: ChannelCredentials | undefined = this.readCredentials(scheme, this.config.metricsEndpoint![2])
var headers = this.makeHeaders(scheme, authToken)
var exporter = this.makeExporter(scheme, ep, headers, creds)
Iif (exporter === undefined) {
return false
}
await this.reader?.forceFlush()
var oldExporter = await this.parentExporter?.swapExporter(exporter!)
await oldExporter?.shutdown()
return true
}
recordHistogram(args: HistogramArgs): boolean {
if (!this.meter) {
this._warn("Meter is not initialized properly. Ensure that the AnacondaMetrics instance is properly set up.")
return false
}
if (!this.isValidName(args.name)) {
this._warn(`Metric name '${args.name}' is not a valid name (^[A-Za-z][A-Za-z_0-9]+$).`)
return false
}
var histogram = this.getHistogram(args.name)
histogram.record(args.value!, this.makeEventAttributes(args.attributes));
return true
}
incrementCounter(args: CounterArgs): boolean {
if (!this.meter) {
this._warn("Meter is not initialized properly. Ensure that the AnacondaMetrics instance is properly set up.")
return false
}
if (!this.isValidName(args.name)) {
this._warn(`Metric name '${args.name}' is not a valid name (^[A-Za-z][A-Za-z_0-9]+$).`)
return false
}
var [counter, isUpDown] = this.getCounter(args.name, args.forceUpDownCounter!)
let by: number = args.by ? Math.abs(args.by!) : 1;
counter.add(by, this.makeEventAttributes(args.attributes))
return true
}
decrementCounter(args: CounterArgs): boolean {
if (!this.meter) {
this._warn("Meter is not initialized properly. Ensure that the AnacondaMetrics instance is properly set up.")
return false
}
if (!this.isValidName(args.name)) {
this._warn(`Metric name '${args.name}' is not a valid name (^[A-Za-z][A-Za-z_0-9]+$).`)
return false
}
var [counter, isUpDown] = this.getCounter(args.name, true)
if (isUpDown === false) {
this._warn(`Metric name '${args.name}' is not a UpDownCounter, decrement is not allowed.`)
return false
}
let by: number = args.by ? -Math.abs(args.by!) : -1;
this.testLastBy = by
counter.add(by, this.makeEventAttributes(args.attributes))
return true
}
async flush(): Promise<void> {
try {
await this.reader?.forceFlush()
} catch (error) {
// Log export failures instead of crashing the application
// This matches Python SDK behavior where export failures are logged
this._warn(`Metric export failed: ${this.errorMessage(error)}`)
}
}
private makeExporter(scheme: string, url: URL, httpHeaders: Record<string,string>,
creds?: ChannelCredentials): PushMetricExporter | undefined {
var urlStr = url.href
var exporter: PushMetricExporter | undefined = undefined
this._debug(`Creating metrics exporter at endpoint ${urlStr}`)
if (scheme === 'grpc:' || scheme === 'grpcs:') {
urlStr = `${url.hostname}:${url.port}`
exporter = new OTLPMetricExporterGRPC({
url: urlStr,
credentials: creds,
temporalityPreference: this.config.getUseCumulativeMetrics() ?
httpNS.AggregationTemporalityPreference.CUMULATIVE :
httpNS.AggregationTemporalityPreference.DELTA
});
} else if (scheme === 'http:' || scheme === 'https:') {
exporter = new OTLPMetricExporterHTTP({
url: urlStr,
headers: httpHeaders,
temporalityPreference: this.config.getUseCumulativeMetrics() ?
httpNS.AggregationTemporalityPreference.CUMULATIVE :
httpNS.AggregationTemporalityPreference.DELTA
});
} else if (scheme === 'console:') {
exporter = new ConsoleMetricExporter()
} else if (scheme === 'devnull:') {
exporter = new NoopMetricExporter()
} else E{
this._warn(`Received bad scheme for metrics: ${scheme}!`)
}
return exporter
}
private makeReader(scheme: string, url: URL, httpHeaders: Record<string,string>, creds?: ChannelCredentials): PeriodicExportingMetricReader | undefined {
this._debug(`Creating Reader for endpoint type '${scheme}'.`)
var exporter = this.makeExporter(scheme, url, httpHeaders, creds)
Iif (exporter === undefined) {
return undefined
}
this.parentExporter = new MetricExporterShim(exporter!)
const reader = new PeriodicExportingMetricReader({
exporter: this.parentExporter!,
exportIntervalMillis: this.metricsExportIntervalMs
});
return reader
}
private readCredentials(scheme: string, certFile?: string): ChannelCredentials | undefined {
var creds: ChannelCredentials | undefined = undefined
if (certFile && scheme === ("grpcs:")) {
const certContent = this.readCertFile(certFile)
if (certContent) {
creds = ChannelCredentials.createSsl(Buffer.from(certContent))
} else {
this._warn(`Failed to read certificate file: ${certFile}`)
}
}
return creds
}
private setup(): void {
if (this.config.useDebug) {
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);
}
var [endpoint, authToken, certFile] = this.config.getMetricsEndpointTuple()
Iif (!this.isValidOtelUrl(endpoint.href)) {
console.error(`The metrics endpoint URL is not valid: ${endpoint.href}`)
return
}
var [scheme, ep] = this.transformURL(endpoint)
var creds: ChannelCredentials | undefined = this.readCredentials(scheme, certFile)
var headers = this.makeHeaders(scheme, authToken)
const reader: PeriodicExportingMetricReader | undefined = this.makeReader(scheme, ep, headers, creds)
if (reader != undefined) {
this.reader = reader
this.meterProvider = new MeterProvider({ readers: [this.reader!], resource: this.resources })
this.meter = this.meterProvider.getMeter(this.serviceName, this.serviceVersion)
if (this.meter) {
this._debug("Meter created successfully.")
} else E{
this._warn("Meter was not created!")
}
} else E{
this._warn("Periodic Metric Reader was not created!")
}
}
private getCounter(metricName: string, forceUpDownCounter: boolean): [UpDownCounter | Counter, boolean] {
if (metricName in this.mapOfCounters) {
return this.mapOfCounters[metricName]
}
var counter: Counter | UpDownCounter
if (forceUpDownCounter) {
counter = this.meter!.createUpDownCounter(metricName)
} else {
counter = this.meter!.createCounter(metricName)
}
this.mapOfCounters[metricName] = [counter, forceUpDownCounter]
return [counter, forceUpDownCounter]
}
private getHistogram(metricName: string): Histogram {
if (metricName in this.mapOfHistograms) {
return this.mapOfHistograms[metricName]
}
var histogram: Histogram = this.meter!.createHistogram(metricName)
this.mapOfHistograms[metricName] = histogram
return histogram
}
}
export class NoopMetricExporter implements PushMetricExporter {
constructor(_options?: any) {}
export(_metrics: ResourceMetrics, resultCallback: (result: { code: number }) => void): void {
resultCallback({ code: 0 });
}
async shutdown(): Promise<void> {
return Promise.resolve();
}
async forceFlush(): Promise<void> {
return Promise.resolve();
}
}
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