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* Copyright The OpenTelemetry Authors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * https://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { DiagLogLevel } from '@opentelemetry/api';\nimport { TracesSamplerValues } from './sampling';\n\nconst DEFAULT_LIST_SEPARATOR = ',';\n\n/**\n * Environment interface to define all names\n */\n\nconst ENVIRONMENT_NUMBERS_KEYS = [\n 'OTEL_BSP_EXPORT_TIMEOUT',\n 'OTEL_BSP_MAX_EXPORT_BATCH_SIZE',\n 'OTEL_BSP_MAX_QUEUE_SIZE',\n 'OTEL_BSP_SCHEDULE_DELAY',\n 'OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT',\n 'OTEL_ATTRIBUTE_COUNT_LIMIT',\n 'OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT',\n 'OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT',\n 'OTEL_SPAN_EVENT_COUNT_LIMIT',\n 'OTEL_SPAN_LINK_COUNT_LIMIT',\n 'OTEL_EXPORTER_JAEGER_AGENT_PORT',\n] as const;\n\ntype ENVIRONMENT_NUMBERS = {\n [K in typeof ENVIRONMENT_NUMBERS_KEYS[number]]?: number;\n};\n\nfunction isEnvVarANumber(key: unknown): key is keyof ENVIRONMENT_NUMBERS {\n return (\n ENVIRONMENT_NUMBERS_KEYS.indexOf(key as keyof ENVIRONMENT_NUMBERS) > -1\n );\n}\n\nconst ENVIRONMENT_LISTS_KEYS = [\n 'OTEL_NO_PATCH_MODULES',\n 'OTEL_PROPAGATORS',\n] as const;\n\ntype ENVIRONMENT_LISTS = {\n [K in typeof ENVIRONMENT_LISTS_KEYS[number]]?: string[];\n};\n\nfunction isEnvVarAList(key: unknown): key is keyof ENVIRONMENT_LISTS {\n return ENVIRONMENT_LISTS_KEYS.indexOf(key as keyof ENVIRONMENT_LISTS) > -1;\n}\n\nexport type ENVIRONMENT = {\n CONTAINER_NAME?: string;\n ECS_CONTAINER_METADATA_URI_V4?: string;\n ECS_CONTAINER_METADATA_URI?: string;\n HOSTNAME?: string;\n KUBERNETES_SERVICE_HOST?: string;\n NAMESPACE?: string;\n OTEL_EXPORTER_JAEGER_AGENT_HOST?: string;\n OTEL_EXPORTER_JAEGER_ENDPOINT?: string;\n OTEL_EXPORTER_JAEGER_PASSWORD?: string;\n OTEL_EXPORTER_JAEGER_USER?: string;\n OTEL_EXPORTER_OTLP_ENDPOINT?: string;\n OTEL_EXPORTER_OTLP_TRACES_ENDPOINT?: string;\n OTEL_EXPORTER_OTLP_METRICS_ENDPOINT?: string;\n OTEL_EXPORTER_OTLP_HEADERS?: string;\n OTEL_EXPORTER_OTLP_TRACES_HEADERS?: string;\n OTEL_EXPORTER_OTLP_METRICS_HEADERS?: string;\n OTEL_EXPORTER_ZIPKIN_ENDPOINT?: string;\n OTEL_LOG_LEVEL?: DiagLogLevel;\n OTEL_RESOURCE_ATTRIBUTES?: string;\n OTEL_SERVICE_NAME?: string;\n OTEL_TRACES_EXPORTER?: string;\n OTEL_TRACES_SAMPLER_ARG?: string;\n OTEL_TRACES_SAMPLER?: string;\n OTEL_EXPORTER_OTLP_COMPRESSION?: string,\n OTEL_EXPORTER_OTLP_TRACES_COMPRESSION?: string,\n OTEL_EXPORTER_OTLP_METRICS_COMPRESSION?: string\n} & ENVIRONMENT_NUMBERS &\n ENVIRONMENT_LISTS;\n\nexport type RAW_ENVIRONMENT = {\n [key: string]: string | number | undefined | string[];\n};\n\nexport const DEFAULT_ATTRIBUTE_VALUE_LENGTH_LIMIT = Infinity;\n\nexport const DEFAULT_ATTRIBUTE_COUNT_LIMIT = 128;\n\n/**\n * Default environment variables\n */\nexport const DEFAULT_ENVIRONMENT: Required<ENVIRONMENT> = {\n CONTAINER_NAME: '',\n ECS_CONTAINER_METADATA_URI_V4: '',\n ECS_CONTAINER_METADATA_URI: '',\n HOSTNAME: '',\n KUBERNETES_SERVICE_HOST: '',\n NAMESPACE: '',\n OTEL_BSP_EXPORT_TIMEOUT: 30000,\n OTEL_BSP_MAX_EXPORT_BATCH_SIZE: 512,\n OTEL_BSP_MAX_QUEUE_SIZE: 2048,\n OTEL_BSP_SCHEDULE_DELAY: 5000,\n OTEL_EXPORTER_JAEGER_AGENT_HOST: '',\n OTEL_EXPORTER_JAEGER_AGENT_PORT: 6832,\n OTEL_EXPORTER_JAEGER_ENDPOINT: '',\n OTEL_EXPORTER_JAEGER_PASSWORD: '',\n OTEL_EXPORTER_JAEGER_USER: '',\n OTEL_EXPORTER_OTLP_ENDPOINT: '',\n OTEL_EXPORTER_OTLP_TRACES_ENDPOINT: '',\n OTEL_EXPORTER_OTLP_METRICS_ENDPOINT: '',\n OTEL_EXPORTER_OTLP_HEADERS: '',\n OTEL_EXPORTER_OTLP_TRACES_HEADERS: '',\n OTEL_EXPORTER_OTLP_METRICS_HEADERS: '',\n OTEL_EXPORTER_ZIPKIN_ENDPOINT: 'http://localhost:9411/api/v2/spans',\n OTEL_LOG_LEVEL: DiagLogLevel.INFO,\n OTEL_NO_PATCH_MODULES: [],\n OTEL_PROPAGATORS: ['tracecontext', 'baggage'],\n OTEL_RESOURCE_ATTRIBUTES: '',\n OTEL_SERVICE_NAME: '',\n OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT: DEFAULT_ATTRIBUTE_VALUE_LENGTH_LIMIT,\n OTEL_ATTRIBUTE_COUNT_LIMIT: DEFAULT_ATTRIBUTE_COUNT_LIMIT,\n OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT: DEFAULT_ATTRIBUTE_VALUE_LENGTH_LIMIT ,\n OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT: DEFAULT_ATTRIBUTE_COUNT_LIMIT,\n OTEL_SPAN_EVENT_COUNT_LIMIT: 128,\n OTEL_SPAN_LINK_COUNT_LIMIT: 128,\n OTEL_TRACES_EXPORTER: 'none',\n OTEL_TRACES_SAMPLER: TracesSamplerValues.ParentBasedAlwaysOn,\n OTEL_TRACES_SAMPLER_ARG: '',\n OTEL_EXPORTER_OTLP_COMPRESSION: '',\n OTEL_EXPORTER_OTLP_TRACES_COMPRESSION: '',\n OTEL_EXPORTER_OTLP_METRICS_COMPRESSION: ''\n};\n\n/**\n * Parses a variable as number with number validation\n * @param name\n * @param environment\n * @param values\n * @param min\n * @param max\n */\nfunction parseNumber(\n name: keyof ENVIRONMENT_NUMBERS,\n environment: ENVIRONMENT,\n values: RAW_ENVIRONMENT,\n min = -Infinity,\n max = Infinity\n) {\n if (typeof values[name] !== 'undefined') {\n const value = Number(values[name] as string);\n if (!isNaN(value)) {\n if (value < min) {\n environment[name] = min;\n } else if (value > max) {\n environment[name] = max;\n } else {\n environment[name] = value;\n }\n }\n }\n}\n\n/**\n * Parses list-like strings from input into output.\n * @param name\n * @param environment\n * @param values\n * @param separator\n */\nfunction parseStringList(\n name: keyof ENVIRONMENT_LISTS,\n output: ENVIRONMENT,\n input: RAW_ENVIRONMENT,\n separator = DEFAULT_LIST_SEPARATOR\n) {\n const givenValue = input[name];\n if (typeof givenValue === 'string') {\n output[name] = givenValue.split(separator).map(v => v.trim());\n }\n}\n\n// The support string -> DiagLogLevel mappings\nconst logLevelMap: { [key: string]: DiagLogLevel } = {\n ALL: DiagLogLevel.ALL,\n VERBOSE: DiagLogLevel.VERBOSE,\n DEBUG: DiagLogLevel.DEBUG,\n INFO: DiagLogLevel.INFO,\n WARN: DiagLogLevel.WARN,\n ERROR: DiagLogLevel.ERROR,\n NONE: DiagLogLevel.NONE,\n};\n\n/**\n * Environmentally sets log level if valid log level string is provided\n * @param key\n * @param environment\n * @param values\n */\nfunction setLogLevelFromEnv(\n key: keyof ENVIRONMENT,\n environment: RAW_ENVIRONMENT | ENVIRONMENT,\n values: RAW_ENVIRONMENT\n) {\n const value = values[key];\n if (typeof value === 'string') {\n const theLevel = logLevelMap[value.toUpperCase()];\n if (theLevel != null) {\n environment[key] = theLevel;\n }\n }\n}\n\n/**\n * Parses environment values\n * @param values\n */\nexport function parseEnvironment(values: RAW_ENVIRONMENT): ENVIRONMENT {\n const environment: ENVIRONMENT = {};\n\n for (const env in DEFAULT_ENVIRONMENT) {\n const key = env as keyof ENVIRONMENT;\n\n switch (key) {\n case 'OTEL_LOG_LEVEL':\n setLogLevelFromEnv(key, environment, values);\n break;\n\n default:\n if (isEnvVarANumber(key)) {\n parseNumber(key, environment, values);\n } else if (isEnvVarAList(key)) {\n parseStringList(key, environment, values);\n } else {\n const value = values[key];\n if (typeof value !== 'undefined' && value !== null) {\n environment[key] = String(value);\n }\n }\n }\n }\n\n return environment;\n}\n"]} |