@opentelemetry/sdk-logs
Version:
79 lines • 3.17 kB
JavaScript
/*
* 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.
*/
import { BindOnceFuture, ExportResultCode, globalErrorHandler, internal, } from '@opentelemetry/core';
/**
* An implementation of the {@link LogRecordProcessor} interface that exports
* each {@link LogRecord} as it is emitted.
*
* NOTE: This {@link LogRecordProcessor} exports every {@link LogRecord}
* individually instead of batching them together, which can cause significant
* performance overhead with most exporters. For production use, please consider
* using the {@link BatchLogRecordProcessor} instead.
*/
export class SimpleLogRecordProcessor {
_exporter;
_shutdownOnce;
_unresolvedExports;
constructor(exporter) {
this._exporter = exporter;
this._shutdownOnce = new BindOnceFuture(this._shutdown, this);
this._unresolvedExports = new Set();
}
onEmit(logRecord) {
if (this._shutdownOnce.isCalled) {
return;
}
const doExport = () => internal
._export(this._exporter, [logRecord])
.then((result) => {
if (result.code !== ExportResultCode.SUCCESS) {
globalErrorHandler(result.error ??
new Error(`SimpleLogRecordProcessor: log record export failed (status ${result})`));
}
})
.catch(globalErrorHandler);
// Avoid scheduling a promise to make the behavior more predictable and easier to test
if (logRecord.resource.asyncAttributesPending) {
const exportPromise = logRecord.resource
.waitForAsyncAttributes?.()
.then(() => {
// Using TS Non-null assertion operator because exportPromise could not be null in here
// if waitForAsyncAttributes is not present this code will never be reached
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
this._unresolvedExports.delete(exportPromise);
return doExport();
}, globalErrorHandler);
// store the unresolved exports
if (exportPromise != null) {
this._unresolvedExports.add(exportPromise);
}
}
else {
void doExport();
}
}
async forceFlush() {
// await unresolved resources before resolving
await Promise.all(Array.from(this._unresolvedExports));
}
shutdown() {
return this._shutdownOnce.call();
}
_shutdown() {
return this._exporter.shutdown();
}
}
//# sourceMappingURL=SimpleLogRecordProcessor.js.map