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6.39 kBSource Map (JSON)View Raw
1{"version":3,"file":"TraceState.js","sourceRoot":"","sources":["../../../src/trace/TraceState.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;GAcG;;;AAGH,uDAAoE;AAEpE,MAAM,qBAAqB,GAAG,EAAE,CAAC;AACjC,MAAM,mBAAmB,GAAG,GAAG,CAAC;AAChC,MAAM,sBAAsB,GAAG,GAAG,CAAC;AACnC,MAAM,8BAA8B,GAAG,GAAG,CAAC;AAE3C;;;;;;;;GAQG;AACH,MAAa,UAAU;IAGrB,YAAY,aAAsB;QAF1B,mBAAc,GAAwB,IAAI,GAAG,EAAE,CAAC;QAGtD,IAAI,aAAa;YAAE,IAAI,CAAC,MAAM,CAAC,aAAa,CAAC,CAAC;IAChD,CAAC;IAED,GAAG,CAAC,GAAW,EAAE,KAAa;QAC5B,4DAA4D;QAC5D,sBAAsB;QACtB,MAAM,UAAU,GAAG,IAAI,CAAC,MAAM,EAAE,CAAC;QACjC,IAAI,UAAU,CAAC,cAAc,CAAC,GAAG,CAAC,GAAG,CAAC,EAAE;YACtC,UAAU,CAAC,cAAc,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC;SACvC;QACD,UAAU,CAAC,cAAc,CAAC,GAAG,CAAC,GAAG,EAAE,KAAK,CAAC,CAAC;QAC1C,OAAO,UAAU,CAAC;IACpB,CAAC;IAED,KAAK,CAAC,GAAW;QACf,MAAM,UAAU,GAAG,IAAI,CAAC,MAAM,EAAE,CAAC;QACjC,UAAU,CAAC,cAAc,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC;QACtC,OAAO,UAAU,CAAC;IACpB,CAAC;IAED,GAAG,CAAC,GAAW;QACb,OAAO,IAAI,CAAC,cAAc,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC;IACtC,CAAC;IAED,SAAS;QACP,OAAO,IAAI,CAAC,KAAK,EAAE;aAChB,MAAM,CAAC,CAAC,GAAa,EAAE,GAAG,EAAE,EAAE;YAC7B,GAAG,CAAC,IAAI,CAAC,GAAG,GAAG,8BAA8B,GAAG,IAAI,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC;YAC/D,OAAO,GAAG,CAAC;QACb,CAAC,EAAE,EAAE,CAAC;aACL,IAAI,CAAC,sBAAsB,CAAC,CAAC;IAClC,CAAC;IAEO,MAAM,CAAC,aAAqB;QAClC,IAAI,aAAa,CAAC,MAAM,GAAG,mBAAmB;YAAE,OAAO;QACvD,IAAI,CAAC,cAAc,GAAG,aAAa;aAChC,KAAK,CAAC,sBAAsB,CAAC;aAC7B,OAAO,EAAE,CAAC,2EAA2E;aACrF,MAAM,CAAC,CAAC,GAAwB,EAAE,IAAY,EAAE,EAAE;YACjD,MAAM,UAAU,GAAG,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC,qCAAqC;YACrE,MAAM,CAAC,GAAG,UAAU,CAAC,OAAO,CAAC,8BAA8B,CAAC,CAAC;YAC7D,IAAI,CAAC,KAAK,CAAC,CAAC,EAAE;gBACZ,MAAM,GAAG,GAAG,UAAU,CAAC,KAAK,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;gBACnC,MAAM,KAAK,GAAG,UAAU,CAAC,KAAK,CAAC,CAAC,GAAG,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC;gBACnD,IAAI,IAAA,wBAAW,EAAC,GAAG,CAAC,IAAI,IAAA,0BAAa,EAAC,KAAK,CAAC,EAAE;oBAC5C,GAAG,CAAC,GAAG,CAAC,GAAG,EAAE,KAAK,CAAC,CAAC;iBACrB;qBAAM;oBACL,oCAAoC;iBACrC;aACF;YACD,OAAO,GAAG,CAAC;QACb,CAAC,EAAE,IAAI,GAAG,EAAE,CAAC,CAAC;QAEhB,gFAAgF;QAChF,IAAI,IAAI,CAAC,cAAc,CAAC,IAAI,GAAG,qBAAqB,EAAE;YACpD,IAAI,CAAC,cAAc,GAAG,IAAI,GAAG,CAC3B,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,cAAc,CAAC,OAAO,EAAE,CAAC;iBACtC,OAAO,EAAE,CAAC,sDAAsD;iBAChE,KAAK,CAAC,CAAC,EAAE,qBAAqB,CAAC,CACnC,CAAC;SACH;IACH,CAAC;IAEO,KAAK;QACX,OAAO,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,CAAC,CAAC,OAAO,EAAE,CAAC;IAC1D,CAAC;IAEO,MAAM;QACZ,MAAM,UAAU,GAAG,IAAI,UAAU,EAAE,CAAC;QACpC,UAAU,CAAC,cAAc,GAAG,IAAI,GAAG,CAAC,IAAI,CAAC,cAAc,CAAC,CAAC;QACzD,OAAO,UAAU,CAAC;IACpB,CAAC;CACF;AA5ED,gCA4EC","sourcesContent":["/*\n * 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 * as api from '@opentelemetry/api';\nimport { validateKey, validateValue } from '../internal/validators';\n\nconst MAX_TRACE_STATE_ITEMS = 32;\nconst MAX_TRACE_STATE_LEN = 512;\nconst LIST_MEMBERS_SEPARATOR = ',';\nconst LIST_MEMBER_KEY_VALUE_SPLITTER = '=';\n\n/**\n * TraceState must be a class and not a simple object type because of the spec\n * requirement (https://www.w3.org/TR/trace-context/#tracestate-field).\n *\n * Here is the list of allowed mutations:\n * - New key-value pair should be added into the beginning of the list\n * - The value of any key can be updated. Modified keys MUST be moved to the\n * beginning of the list.\n */\nexport class TraceState implements api.TraceState {\n private _internalState: Map<string, string> = new Map();\n\n constructor(rawTraceState?: string) {\n if (rawTraceState) this._parse(rawTraceState);\n }\n\n set(key: string, value: string): TraceState {\n // TODO: Benchmark the different approaches(map vs list) and\n // use the faster one.\n const traceState = this._clone();\n if (traceState._internalState.has(key)) {\n traceState._internalState.delete(key);\n }\n traceState._internalState.set(key, value);\n return traceState;\n }\n\n unset(key: string): TraceState {\n const traceState = this._clone();\n traceState._internalState.delete(key);\n return traceState;\n }\n\n get(key: string): string | undefined {\n return this._internalState.get(key);\n }\n\n serialize(): string {\n return this._keys()\n .reduce((agg: string[], key) => {\n agg.push(key + LIST_MEMBER_KEY_VALUE_SPLITTER + this.get(key));\n return agg;\n }, [])\n .join(LIST_MEMBERS_SEPARATOR);\n }\n\n private _parse(rawTraceState: string) {\n if (rawTraceState.length > MAX_TRACE_STATE_LEN) return;\n this._internalState = rawTraceState\n .split(LIST_MEMBERS_SEPARATOR)\n .reverse() // Store in reverse so new keys (.set(...)) will be placed at the beginning\n .reduce((agg: Map<string, string>, part: string) => {\n const listMember = part.trim(); // Optional Whitespace (OWS) handling\n const i = listMember.indexOf(LIST_MEMBER_KEY_VALUE_SPLITTER);\n if (i !== -1) {\n const key = listMember.slice(0, i);\n const value = listMember.slice(i + 1, part.length);\n if (validateKey(key) && validateValue(value)) {\n agg.set(key, value);\n } else {\n // TODO: Consider to add warning log\n }\n }\n return agg;\n }, new Map());\n\n // Because of the reverse() requirement, trunc must be done after map is created\n if (this._internalState.size > MAX_TRACE_STATE_ITEMS) {\n this._internalState = new Map(\n Array.from(this._internalState.entries())\n .reverse() // Use reverse same as original tracestate parse chain\n .slice(0, MAX_TRACE_STATE_ITEMS)\n );\n }\n }\n\n private _keys(): string[] {\n return Array.from(this._internalState.keys()).reverse();\n }\n\n private _clone(): TraceState {\n const traceState = new TraceState();\n traceState._internalState = new Map(this._internalState);\n return traceState;\n }\n}\n"]}
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