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feat(opentelemetry-js): infer zipkin service name from resource #1138

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merged 9 commits into from
Jun 6, 2020
Merged

feat(opentelemetry-js): infer zipkin service name from resource #1138

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6c113d7
feat(opentelemetry-js): infer zipkin service name from resource
rezakrimi Jun 3, 2020
e0dd742
Update packages/opentelemetry-exporter-zipkin/src/zipkin.ts
rezakrimi Jun 3, 2020
1ce71b9
fix: making serviceName optional for zipkin config
rezakrimi Jun 3, 2020
c0b56d3
fix: resolving type issues
rezakrimi Jun 3, 2020
42de702
Update packages/opentelemetry-exporter-zipkin/src/zipkin.ts
rezakrimi Jun 3, 2020
ad18c21
refactor: making default service name a constant
rezakrimi Jun 4, 2020
c7cf118
Merge branch 'zipkin-service-name' of https://github.com/rezakrimi/op…
rezakrimi Jun 4, 2020
edcc5f9
Merge branch 'master' into zipkin-service-name
mayurkale22 Jun 5, 2020
bfc8566
Merge branch 'master' into zipkin-service-name
mayurkale22 Jun 6, 2020
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2 changes: 1 addition & 1 deletion packages/opentelemetry-exporter-zipkin/src/types.ts
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Expand Up @@ -21,7 +21,7 @@ import * as api from '@opentelemetry/api';
*/
export interface ExporterConfig {
logger?: api.Logger;
serviceName: string;
serviceName?: string;
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It would be nice if you can update the https://github.com/rezakrimi/opentelemetry-js/tree/zipkin-service-name/packages/opentelemetry-exporter-zipkin#usage and mention "serviceName is optional and can be omitted - it will be inferred from resource and in case not provided, serviceName will default to "OpenTelemetry Service"". Something like this.

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@rezakrimi rezakrimi Jun 4, 2020 •
edited
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How about we mention that it's completely optional to pass the config now. So the usage section will be something like:
"Install the exporter on your application and pass the options. It's optional to pass the options. If serviceName is omitted, it will be inferred from resource and in case not provided, serviceName will default to "OpenTelemetry Service". The url is also set to http://localhost:9411/api/v2/spans by default."

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It's not exactly obvious how to set the service name in the resource right now, so I would focus more on the case where you do directly set the service name:

serviceName is an optional string. If omitted, the exporter will first try to get the service name from the Resource. If no service name can be detected on the Resource, a fallback name of "OpenTelemetry Service" will be used.

url?: string;
// Optional mapping overrides for OpenTelemetry status code and description.
statusCodeTagName?: string;
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15 changes: 5 additions & 10 deletions packages/opentelemetry-exporter-zipkin/src/zipkin.ts
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Expand Up @@ -70,15 +70,10 @@ export class ZipkinExporter implements SpanExporter {
resultCallback: (result: ExportResult) => void
) {
if (typeof this._serviceName !== 'string') {
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if (
typeof spans[0].resource.labels[SERVICE_RESOURCE.NAME] !== 'undefined'
) {
this._serviceName = spans[0].resource.labels[
SERVICE_RESOURCE.NAME
].toString();
} else {
this._serviceName = 'Unnamed Service';
}
this._serviceName = String(
spans[0].resource.labels[SERVICE_RESOURCE.NAME] ||
'OpenTelemetry Service'
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I would prefer to have const for this.

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@rezakrimi rezakrimi Jun 4, 2020 •
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do you mean like thi?

        const defaultServiceName = String(
        spans[0].resource.labels[SERVICE_RESOURCE.NAME] ||
          'OpenTelemetry Service');

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No he means defining a constant somewhere like const DEFAULT_SERVICE_NAME = 'OpenTelemetry Service' then doing

String(spans[0].resource.labels[SERVICE_RESOURCE.NAME] || DEFAULT_SERVICE_NAME);

);
}
this._logger.debug('Zipkin exporter export');
if (this._isShutdown) {
Expand All @@ -105,7 +100,7 @@ export class ZipkinExporter implements SpanExporter {
private _toZipkinSpan(span: ReadableSpan): zipkinTypes.Span {
return toZipkinSpan(
span,
this._serviceName,
String(this._serviceName),
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this._statusCodeTagName,
this._statusDescriptionTagName
);
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16 changes: 4 additions & 12 deletions packages/opentelemetry-exporter-zipkin/test/zipkin.test.ts
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Expand Up @@ -333,7 +333,7 @@ describe('ZipkinExporter', () => {
});
});

it('should set serviceName to "Unnamed service" by default', () => {
it('should set serviceName to "Opentelemetry Service" by default', () => {
const scope = nock('http://localhost:9411')
.post('/api/v2/spans')
.replyWithError(new Error('My Socket Error'));
Expand Down Expand Up @@ -393,15 +393,11 @@ describe('ZipkinExporter', () => {
resource: Resource.empty(),
};

const exporter = new ZipkinExporter({
serviceName: 'my-service',
});

delete exporter['_serviceName'];
const exporter = new ZipkinExporter({});

exporter.export([span1, span2], (result: ExportResult) => {
scope.done();
assert.equal(exporter['_serviceName'], 'Unnamed Service');
assert.equal(exporter['_serviceName'], 'OpenTelemetry Service');
});
});

Expand Down Expand Up @@ -469,11 +465,7 @@ describe('ZipkinExporter', () => {
resource: Resource.empty(),
};

const exporter = new ZipkinExporter({
serviceName: 'my-service',
});

delete exporter['_serviceName'];
const exporter = new ZipkinExporter({});

exporter.export([span1, span2], (result: ExportResult) => {
scope.done();
Expand Down