46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
import mitt from '../../shared/lib/mitt';
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class Span {
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constructor(name, options, onSpanEnd){
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this.name = name;
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this.attributes = options.attributes ?? {};
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this.startTime = options.startTime ?? Date.now();
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this.onSpanEnd = onSpanEnd;
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this.state = {
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state: 'inprogress'
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};
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}
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end(endTime) {
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if (this.state.state === 'ended') {
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throw Object.defineProperty(new Error('Span has already ended'), "__NEXT_ERROR_CODE", {
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value: "E17",
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enumerable: false,
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configurable: true
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});
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}
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this.state = {
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state: 'ended',
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endTime: endTime ?? Date.now()
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};
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this.onSpanEnd(this);
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}
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}
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class Tracer {
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startSpan(name, options) {
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return new Span(name, options, this.handleSpanEnd);
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}
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onSpanEnd(cb) {
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this._emitter.on('spanend', cb);
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return ()=>{
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this._emitter.off('spanend', cb);
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};
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}
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constructor(){
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this._emitter = mitt();
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this.handleSpanEnd = (span)=>{
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this._emitter.emit('spanend', span);
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};
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}
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}
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export default new Tracer();
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//# sourceMappingURL=tracer.js.map
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