@opentelemetry/exporter-jaeger
Version:
OpenTelemetry Exporter Jaeger allows user to send collected traces to Jaeger
140 lines • 5.55 kB
JavaScript
"use strict";
/*
* Copyright The OpenTelemetry Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.spanToThrift = void 0;
const api_1 = require("@opentelemetry/api");
const core_1 = require("@opentelemetry/core");
const types_1 = require("./types");
const DEFAULT_FLAGS = 0x1;
/**
* Translate OpenTelemetry ReadableSpan to Jaeger Thrift Span
* @param span Span to be translated
*/
function spanToThrift(span) {
const traceId = span.spanContext().traceId.padStart(32, '0');
const traceIdHigh = traceId.slice(0, 16);
const traceIdLow = traceId.slice(16);
const parentSpan = span.parentSpanContext?.spanId
? types_1.Utils.encodeInt64(span.parentSpanContext.spanId)
: types_1.ThriftUtils.emptyBuffer;
const tags = Object.keys(span.attributes).map((name) => ({ key: name, value: toTagValue(span.attributes[name]) }));
if (span.status.code !== api_1.SpanStatusCode.UNSET) {
tags.push({
key: 'otel.status_code',
value: api_1.SpanStatusCode[span.status.code],
});
if (span.status.message) {
tags.push({ key: 'otel.status_description', value: span.status.message });
}
}
// Ensure that if SpanStatus.Code is ERROR, that we set the "error" tag on the
// Jaeger span.
if (span.status.code === api_1.SpanStatusCode.ERROR) {
tags.push({ key: 'error', value: true });
}
if (span.kind !== undefined && span.kind !== api_1.SpanKind.INTERNAL) {
tags.push({ key: 'span.kind', value: api_1.SpanKind[span.kind].toLowerCase() });
}
Object.keys(span.resource.attributes).forEach(name => tags.push({
key: name,
value: toTagValue(span.resource.attributes[name]),
}));
if (span.instrumentationScope) {
tags.push({
key: 'otel.library.name',
value: toTagValue(span.instrumentationScope.name),
});
tags.push({
key: 'otel.library.version',
value: toTagValue(span.instrumentationScope.version),
});
}
/* Add droppedAttributesCount as a tag */
if (span.droppedAttributesCount) {
tags.push({
key: 'otel.dropped_attributes_count',
value: toTagValue(span.droppedAttributesCount),
});
}
/* Add droppedEventsCount as a tag */
if (span.droppedEventsCount) {
tags.push({
key: 'otel.dropped_events_count',
value: toTagValue(span.droppedEventsCount),
});
}
/* Add droppedLinksCount as a tag */
if (span.droppedLinksCount) {
tags.push({
key: 'otel.dropped_links_count',
value: toTagValue(span.droppedLinksCount),
});
}
const spanTags = types_1.ThriftUtils.getThriftTags(tags);
const logs = span.events.map((event) => {
const fields = [{ key: 'event', value: event.name }];
const attrs = event.attributes;
if (attrs) {
Object.keys(attrs).forEach(attr => fields.push({ key: attr, value: toTagValue(attrs[attr]) }));
}
if (event.droppedAttributesCount) {
fields.push({
key: 'otel.event.dropped_attributes_count',
value: event.droppedAttributesCount,
});
}
return { timestamp: (0, core_1.hrTimeToMilliseconds)(event.time), fields };
});
const spanLogs = types_1.ThriftUtils.getThriftLogs(logs);
return {
traceIdLow: types_1.Utils.encodeInt64(traceIdLow),
traceIdHigh: types_1.Utils.encodeInt64(traceIdHigh),
spanId: types_1.Utils.encodeInt64(span.spanContext().spanId),
parentSpanId: parentSpan,
operationName: span.name,
references: spanLinksToThriftRefs(span.links),
flags: span.spanContext().traceFlags || DEFAULT_FLAGS,
startTime: types_1.Utils.encodeInt64((0, core_1.hrTimeToMicroseconds)(span.startTime)),
duration: types_1.Utils.encodeInt64((0, core_1.hrTimeToMicroseconds)(span.duration)),
tags: spanTags,
logs: spanLogs,
};
}
exports.spanToThrift = spanToThrift;
/** Translate OpenTelemetry {@link Link}s to Jaeger ThriftReference. */
function spanLinksToThriftRefs(links) {
return links.map((link) => {
const refType = types_1.ThriftReferenceType.FOLLOWS_FROM;
const traceId = link.context.traceId;
const traceIdHigh = types_1.Utils.encodeInt64(traceId.slice(0, 16));
const traceIdLow = types_1.Utils.encodeInt64(traceId.slice(16));
const spanId = types_1.Utils.encodeInt64(link.context.spanId);
return { traceIdLow, traceIdHigh, spanId, refType };
});
}
/** Translate OpenTelemetry attribute value to Jaeger TagValue. */
function toTagValue(value) {
const valueType = typeof value;
if (valueType === 'boolean') {
return value;
}
else if (valueType === 'number') {
return value;
}
return String(value);
}
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