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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
import { SpanKind, setSpan, context as otContext, getTracer } from "./interfaces";
import { trace, INVALID_SPAN_CONTEXT } from "@opentelemetry/api";
export function isTracingDisabled() {
var _a;
if (typeof process === "undefined") {
// not supported in browser for now without polyfills
return false;
}
const azureTracingDisabledValue = (_a = process.env.AZURE_TRACING_DISABLED) === null || _a === void 0 ? void 0 : _a.toLowerCase();
if (azureTracingDisabledValue === "false" || azureTracingDisabledValue === "0") {
return false;
}
return Boolean(azureTracingDisabledValue);
}
/**
* Creates a function that can be used to create spans using the global tracer.
*
* Usage:
*
* ```typescript
* // once
* const createSpan = createSpanFunction({ packagePrefix: "Azure.Data.AppConfiguration", namespace: "Microsoft.AppConfiguration" });
*
* // in each operation
* const span = createSpan("deleteConfigurationSetting", operationOptions);
* // code...
* span.end();
* ```
*
* @hidden
* @param args - allows configuration of the prefix for each span as well as the az.namespace field.
*/
export function createSpanFunction(args) {
return function (operationName, operationOptions) {
const tracer = getTracer();
const tracingOptions = (operationOptions === null || operationOptions === void 0 ? void 0 : operationOptions.tracingOptions) || {};
const spanOptions = Object.assign({ kind: SpanKind.INTERNAL }, tracingOptions.spanOptions);
const spanName = args.packagePrefix ? `${args.packagePrefix}.${operationName}` : operationName;
let span;
if (isTracingDisabled()) {
span = trace.wrapSpanContext(INVALID_SPAN_CONTEXT);
}
else {
span = tracer.startSpan(spanName, spanOptions, tracingOptions.tracingContext);
}
if (args.namespace) {
span.setAttribute("az.namespace", args.namespace);
}
let newSpanOptions = tracingOptions.spanOptions || {};
if (span.isRecording() && args.namespace) {
newSpanOptions = Object.assign(Object.assign({}, tracingOptions.spanOptions), { attributes: Object.assign(Object.assign({}, spanOptions.attributes), { "az.namespace": args.namespace }) });
}
const newTracingOptions = Object.assign(Object.assign({}, tracingOptions), { spanOptions: newSpanOptions, tracingContext: setSpan(tracingOptions.tracingContext || otContext.active(), span) });
const newOperationOptions = Object.assign(Object.assign({}, operationOptions), { tracingOptions: newTracingOptions });
return {
span,
updatedOptions: newOperationOptions
};
};
}
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