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util.ts
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util.ts
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/*
* 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 * as grpc from '@grpc/grpc-js';
import * as protoLoader from '@grpc/proto-loader';
import { diag } from '@opentelemetry/api';
import { globalErrorHandler } from '@opentelemetry/core';
import { collectorTypes } from '@opentelemetry/exporter-collector';
import * as path from 'path';
import { CollectorExporterNodeBase } from './CollectorExporterNodeBase';
import { URL } from 'url';
import {
CollectorExporterConfigNode,
GRPCQueueItem,
ServiceClientType,
} from './types';
export function onInit<ExportItem, ServiceRequest>(
collector: CollectorExporterNodeBase<ExportItem, ServiceRequest>,
config: CollectorExporterConfigNode
): void {
collector.grpcQueue = [];
const credentials: grpc.ChannelCredentials =
config.credentials || grpc.credentials.createInsecure();
const includeDirs = [path.resolve(__dirname, '..', 'protos')];
protoLoader
.load(collector.getServiceProtoPath(), {
keepCase: false,
longs: String,
enums: String,
defaults: true,
oneofs: true,
includeDirs,
})
.then(packageDefinition => {
const packageObject: any = grpc.loadPackageDefinition(packageDefinition);
if (collector.getServiceClientType() === ServiceClientType.SPANS) {
collector.serviceClient =
new packageObject.opentelemetry.proto.collector.trace.v1.TraceService(
collector.url,
credentials,
);
} else {
collector.serviceClient =
new packageObject.opentelemetry.proto.collector.metrics.v1.MetricsService(
collector.url,
credentials,
);
}
if (collector.grpcQueue.length > 0) {
const queue = collector.grpcQueue.splice(0);
queue.forEach((item: GRPCQueueItem<ExportItem>) => {
collector.send(item.objects, item.onSuccess, item.onError);
});
}
})
.catch(err => {
globalErrorHandler(err);
});
}
export function send<ExportItem, ServiceRequest>(
collector: CollectorExporterNodeBase<ExportItem, ServiceRequest>,
objects: ExportItem[],
onSuccess: () => void,
onError: (error: collectorTypes.CollectorExporterError) => void
): void {
if (collector.serviceClient) {
const serviceRequest = collector.convert(objects);
collector.serviceClient.export(
serviceRequest,
collector.metadata || new grpc.Metadata(),
(err: collectorTypes.ExportServiceError) => {
if (err) {
diag.error('Service request', serviceRequest);
onError(err);
} else {
diag.debug('Objects sent');
onSuccess();
}
}
);
} else {
collector.grpcQueue.push({
objects,
onSuccess,
onError,
});
}
}
export function validateAndNormalizeUrl(url: string): string {
const hasProtocol = url.match(/^([\w]{1,8}):\/\//);
if (!hasProtocol) {
url = `https://${url}`;
}
const target = new URL(url);
if (target.host === '') {
diag.warn(
'Parsing URL failed to return a valid host. Returning raw url.'
);
return url
}
if (target.pathname && target.pathname !== '/') {
diag.warn(
'URL path should not be set when using grpc, the path part of the URL will be ignored.'
);
}
if (target.protocol !== '' && !target.protocol?.match(/(http|grpc)s?/)) {
diag.warn(
'URL protocol should be http(s):// or grpc(s)://. Using grpc://.'
);
}
return target.host
}