Marc Mintel
5397309103
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107 lines
5.3 KiB
Plaintext
107 lines
5.3 KiB
Plaintext
"use strict";
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/*
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* Copyright The OpenTelemetry Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.buildSamplerFromEnv = exports.loadDefaultConfig = void 0;
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const api_1 = require("@opentelemetry/api");
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const core_1 = require("@opentelemetry/core");
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const AlwaysOffSampler_1 = require("./sampler/AlwaysOffSampler");
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const AlwaysOnSampler_1 = require("./sampler/AlwaysOnSampler");
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const ParentBasedSampler_1 = require("./sampler/ParentBasedSampler");
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const TraceIdRatioBasedSampler_1 = require("./sampler/TraceIdRatioBasedSampler");
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var TracesSamplerValues;
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(function (TracesSamplerValues) {
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TracesSamplerValues["AlwaysOff"] = "always_off";
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TracesSamplerValues["AlwaysOn"] = "always_on";
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TracesSamplerValues["ParentBasedAlwaysOff"] = "parentbased_always_off";
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TracesSamplerValues["ParentBasedAlwaysOn"] = "parentbased_always_on";
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TracesSamplerValues["ParentBasedTraceIdRatio"] = "parentbased_traceidratio";
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TracesSamplerValues["TraceIdRatio"] = "traceidratio";
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})(TracesSamplerValues || (TracesSamplerValues = {}));
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const DEFAULT_RATIO = 1;
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/**
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* Load default configuration. For fields with primitive values, any user-provided
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* value will override the corresponding default value. For fields with
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* non-primitive values (like `spanLimits`), the user-provided value will be
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* used to extend the default value.
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*/
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// object needs to be wrapped in this function and called when needed otherwise
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// envs are parsed before tests are ran - causes tests using these envs to fail
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function loadDefaultConfig() {
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return {
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sampler: buildSamplerFromEnv(),
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forceFlushTimeoutMillis: 30000,
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generalLimits: {
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attributeValueLengthLimit: (0, core_1.getNumberFromEnv)('OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT') ?? Infinity,
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attributeCountLimit: (0, core_1.getNumberFromEnv)('OTEL_ATTRIBUTE_COUNT_LIMIT') ?? 128,
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},
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spanLimits: {
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attributeValueLengthLimit: (0, core_1.getNumberFromEnv)('OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT') ?? Infinity,
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attributeCountLimit: (0, core_1.getNumberFromEnv)('OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT') ?? 128,
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linkCountLimit: (0, core_1.getNumberFromEnv)('OTEL_SPAN_LINK_COUNT_LIMIT') ?? 128,
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eventCountLimit: (0, core_1.getNumberFromEnv)('OTEL_SPAN_EVENT_COUNT_LIMIT') ?? 128,
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attributePerEventCountLimit: (0, core_1.getNumberFromEnv)('OTEL_SPAN_ATTRIBUTE_PER_EVENT_COUNT_LIMIT') ?? 128,
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attributePerLinkCountLimit: (0, core_1.getNumberFromEnv)('OTEL_SPAN_ATTRIBUTE_PER_LINK_COUNT_LIMIT') ?? 128,
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},
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};
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}
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exports.loadDefaultConfig = loadDefaultConfig;
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/**
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* Based on environment, builds a sampler, complies with specification.
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*/
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function buildSamplerFromEnv() {
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const sampler = (0, core_1.getStringFromEnv)('OTEL_TRACES_SAMPLER') ??
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TracesSamplerValues.ParentBasedAlwaysOn;
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switch (sampler) {
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case TracesSamplerValues.AlwaysOn:
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return new AlwaysOnSampler_1.AlwaysOnSampler();
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case TracesSamplerValues.AlwaysOff:
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return new AlwaysOffSampler_1.AlwaysOffSampler();
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case TracesSamplerValues.ParentBasedAlwaysOn:
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return new ParentBasedSampler_1.ParentBasedSampler({
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root: new AlwaysOnSampler_1.AlwaysOnSampler(),
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});
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case TracesSamplerValues.ParentBasedAlwaysOff:
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return new ParentBasedSampler_1.ParentBasedSampler({
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root: new AlwaysOffSampler_1.AlwaysOffSampler(),
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});
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case TracesSamplerValues.TraceIdRatio:
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return new TraceIdRatioBasedSampler_1.TraceIdRatioBasedSampler(getSamplerProbabilityFromEnv());
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case TracesSamplerValues.ParentBasedTraceIdRatio:
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return new ParentBasedSampler_1.ParentBasedSampler({
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root: new TraceIdRatioBasedSampler_1.TraceIdRatioBasedSampler(getSamplerProbabilityFromEnv()),
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});
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default:
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api_1.diag.error(`OTEL_TRACES_SAMPLER value "${sampler}" invalid, defaulting to "${TracesSamplerValues.ParentBasedAlwaysOn}".`);
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return new ParentBasedSampler_1.ParentBasedSampler({
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root: new AlwaysOnSampler_1.AlwaysOnSampler(),
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});
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}
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}
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exports.buildSamplerFromEnv = buildSamplerFromEnv;
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function getSamplerProbabilityFromEnv() {
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const probability = (0, core_1.getNumberFromEnv)('OTEL_TRACES_SAMPLER_ARG');
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if (probability == null) {
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api_1.diag.error(`OTEL_TRACES_SAMPLER_ARG is blank, defaulting to ${DEFAULT_RATIO}.`);
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return DEFAULT_RATIO;
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}
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if (probability < 0 || probability > 1) {
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api_1.diag.error(`OTEL_TRACES_SAMPLER_ARG=${probability} was given, but it is out of range ([0..1]), defaulting to ${DEFAULT_RATIO}.`);
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return DEFAULT_RATIO;
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}
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return probability;
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}
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//# sourceMappingURL=config.js.map |