111 lines
3.2 KiB
JavaScript

const traces = axios.create({
baseURL: opentelemetry_settings.baseUrl,
timeout: 16000,
});
return {
endSpan(conversationId) {
return new Promise(async (resolve, reject) => {
try {
const latencySpanKey = `latency-span-${conversationId}`;
const span = JSON.parse(await redis.get(latencySpanKey));
if (!span) {
resolve();
return;
}
redis.del(latencySpanKey);
span.resourceSpans[0].scopeSpans[0].spans[0].endTimeUnixNano =
"" + Date.now() * 1000000;
console.log("latencySpan span:");
console.log(span);
const response = await traces.post(`/v1/traces`, span, {
headers: {
"Content-Type": "application/json",
},
});
resolve(span);
} catch (error) {
reject(error);
}
});
},
startSpan(conversationId, startTime) {
return new Promise(async (resolve, reject) => {
try {
const latencySpanKey = `latency-span-${conversationId}`;
const traceId = conversationId.replace(/-/gi, "");
const span = {
resourceSpans: [
{
resource: {
attributes: [
{
key: "service.name",
value: {
stringValue: "end-of-utterance-latency",
},
},
],
},
scopeSpans: [
{
scope: {
name: "scope-name",
version: "1.0.0",
attributes: [
{
key: "my.scope.attribute",
value: {
stringValue: "some scope attribute",
},
},
],
},
spans: [
{
traceId: traceId,
spanId: getIdGenerator(8)(),
name: "end-of-utterance-latency",
startTimeUnixNano: startTime,
kind: 2,
},
],
},
],
},
],
};
await redis.set(latencySpanKey, JSON.stringify(span));
await redis.expire(latencySpanKey, 300);
resolve(span);
} catch (error) {
reject(error);
}
});
},
};
function getIdGenerator(bytes) {
return function generateId() {
const SHARED_BUFFER = buffer.Buffer.allocUnsafe(16);
for (let i = 0; i < bytes / 4; i++) {
// unsigned right shift drops decimal part of the number
// it is required because if a number between 2**32 and 2**32 - 1 is generated, an out of range error is thrown by writeUInt32BE
SHARED_BUFFER.writeUInt32BE((Math.random() * 2 ** 32) >>> 0, i * 4);
}
// If buffer is all 0, set the last byte to 1 to guarantee a valid w3c id is generated
for (let i = 0; i < bytes; i++) {
if (SHARED_BUFFER[i] > 0) {
break;
} else if (i === bytes - 1) {
SHARED_BUFFER[bytes - 1] = 1;
}
}
return SHARED_BUFFER.toString("hex", 0, bytes);
};
}