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fix: left pad short b3 trace identifiers #1021

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merged 2 commits into from
May 5, 2020
Merged

fix: left pad short b3 trace identifiers #1021

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ddf3d3b
fix: left pad short b3 trace identifiers
dyladan May 5, 2020
af805a9
chore: validate b3 trace ids 64 or 128 bit
dyladan May 5, 2020
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fix: left pad short b3 trace identifiers
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@dyladan
dyladan committed May 5, 2020
commit ddf3d3bde1116512f9382082823ec9e19deab44c
17 changes: 14 additions & 3 deletions packages/opentelemetry-core/src/context/propagation/B3Propagator.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -72,16 +72,27 @@ export class B3Propagator implements HttpTextPropagator {
const traceIdHeader = getter(carrier, X_B3_TRACE_ID);
const spanIdHeader = getter(carrier, X_B3_SPAN_ID);
const sampledHeader = getter(carrier, X_B3_SAMPLED);
const traceId = Array.isArray(traceIdHeader)

const traceIdHeaderValue = Array.isArray(traceIdHeader)
? traceIdHeader[0]
: traceIdHeader;
const spanId = Array.isArray(spanIdHeader) ? spanIdHeader[0] : spanIdHeader;
const spanIdHeaderValue = Array.isArray(spanIdHeader)
? spanIdHeader[0]
: spanIdHeader;

const options = Array.isArray(sampledHeader)
? sampledHeader[0]
: sampledHeader;

if (typeof traceId !== 'string' || typeof spanId !== 'string')
if (
typeof traceIdHeaderValue !== 'string' ||
typeof spanIdHeaderValue !== 'string'
) {
return context;
}

const traceId = traceIdHeaderValue.padStart(32, '0');
const spanId = spanIdHeaderValue.padStart(16, '0');

if (isValidTraceId(traceId) && isValidSpanId(spanId)) {
return setExtractedSpanContext(context, {
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16 changes: 16 additions & 0 deletions packages/opentelemetry-core/test/context/B3Propagator.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -289,5 +289,21 @@ describe('B3Propagator', () => {
assert.ok(ctx2 === Context.ROOT_CONTEXT);
assert.ok(ctx3 === Context.ROOT_CONTEXT);
});

it('should left-pad short ids with 0', () => {
carrier[X_B3_TRACE_ID] = 'dd8448eb211c80319c';
carrier[X_B3_SPAN_ID] = '9203331';
carrier[X_B3_SAMPLED] = '1';
const extractedSpanContext = getExtractedSpanContext(
b3Propagator.extract(Context.ROOT_CONTEXT, carrier, defaultGetter)
);

assert.deepStrictEqual(extractedSpanContext, {
spanId: '0000000009203331',
traceId: '00000000000000dd8448eb211c80319c',
isRemote: true,
traceFlags: TraceFlags.SAMPLED,
});
});
});
});