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- added span_context and associated tests
- added configuation files and package.json that will be needed - added flow declarations as well.
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Onwukike Ibe
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Aug 16, 2016
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| @@ -1,3 +1,4 @@ | ||
| { | ||
| "presets": ["es2015"] | ||
| "presets": ["es2015"], | ||
| "plugins": ["transform-flow-strip-types", "transform-class-properties"] | ||
| } |
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| [include] | ||
| ./node_modules/ | ||
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| [libs] | ||
| ./test/decls/ | ||
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| [options] | ||
| unsafe.enable_getters_and_setters=true |
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| coverage/ | ||
| dist/ | ||
| node_modules/ | ||
| npm-debug.log |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,180 @@ | ||
| // @flow | ||
| // Copyright (c) 2016 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
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| import Int64 from 'node-int64'; | ||
| import Utils from './util.js'; | ||
|
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| let SAMPLED_MASK = 0x1; | ||
| let DEBUG_MASK = 0x2; | ||
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| export default class SpanContext { | ||
| _traceId: any; | ||
| _spanId: any; | ||
| _parentId: any; | ||
| _flags: number; | ||
| _baggage: any; | ||
| _baggageHeaderCache: any; | ||
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| constructor(traceId: any, | ||
| spanId: any, | ||
| parentId: any, | ||
| flags: number, | ||
| baggage: any = {}) { | ||
| this._traceId = traceId; | ||
| this._spanId = spanId; | ||
| this._parentId = parentId; | ||
| this._flags = flags; | ||
| this._baggage = baggage; | ||
| } | ||
|
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| get traceId(): any { | ||
| return this._traceId; | ||
| } | ||
|
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| get spanId(): any { | ||
| return this._spanId; | ||
| } | ||
|
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| get parentId(): any { | ||
| return this._parentId; | ||
| } | ||
|
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| get flags(): number { | ||
| return this._flags; | ||
| } | ||
|
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| get baggage(): any { | ||
| return this._baggage; | ||
| } | ||
|
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| static getBaggageHeaderCache() { | ||
| if (!this._baggageHeaderCache) { | ||
| this._baggageHeaderCache = {}; | ||
| } | ||
|
|
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| return this._baggageHeaderCache; | ||
| } | ||
|
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| /** | ||
| * Returns a normalize key. | ||
| * | ||
| * @param {string} key - The key to be normalized for a particular baggage value. | ||
| * @return {string} - The normalized key (lower cased and underscores replaced, along with dashes.) | ||
| **/ | ||
| // todo(oibe) moved to span in newest opentracing version | ||
| _normalizeBaggageKey(key: string) { | ||
| let baggageHeaderCache = this.constructor.getBaggageHeaderCache(); | ||
| if (key in baggageHeaderCache) { | ||
| return baggageHeaderCache[key]; | ||
| } | ||
|
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| // This stackoverflow claims this approach is slower than regex | ||
| // http://stackoverflow.com/questions/1144783/replacing-all-occurrences-of-a-string-in-javascript | ||
| let normalizedKey: string = key.toLowerCase().split('_').join('-'); | ||
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| if (Object.keys(baggageHeaderCache).length < 100) { | ||
| baggageHeaderCache[key] = normalizedKey; | ||
| } | ||
|
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| return normalizedKey; | ||
| } | ||
|
|
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| /** | ||
| * Sets a baggage value with an associated key. | ||
| * | ||
| * @param {string} key - The baggage key. | ||
| * @param {string} value - The baggage value. | ||
| **/ | ||
| // todo(oibe) moved to span in newest opentracing version | ||
| setBaggageItem(key: string, value: string): void { | ||
| let normalizedKey = this._normalizeBaggageKey(key); | ||
| this._baggage[normalizedKey] = value; | ||
| } | ||
|
|
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| /** | ||
| * Gets a baggage value with an associated key. | ||
| * | ||
| * @param {string} key - The baggage key. | ||
| * @return {string} value - The baggage value. | ||
| **/ | ||
| // todo(oibe) moved to span in newest opentracing version | ||
| getBaggageItem(key: string): string { | ||
| let normalizedKey = this._normalizeBaggageKey(key); | ||
| return this._baggage[normalizedKey]; | ||
| } | ||
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| /** | ||
| * @return {boolean} - returns whether or not this span context was sampled. | ||
| **/ | ||
| IsSampled(): boolean { | ||
| return (this.flags & SAMPLED_MASK) === SAMPLED_MASK; | ||
| } | ||
|
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| /** | ||
| * @return {boolean} - returns whether or not this span context has a debug flag set. | ||
| **/ | ||
| IsDebug(): boolean { | ||
| return (this.flags & DEBUG_MASK) === DEBUG_MASK; | ||
| } | ||
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| /** | ||
| * @return {string} - returns a string version of this span context. | ||
| **/ | ||
| toString(): string { | ||
| var parentId = this._parentId ? this._parentId.toString('hex') : '0'; | ||
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| return [ | ||
| Utils.removeLeadingZeros(this._traceId.toString('hex')), | ||
| Utils.removeLeadingZeros(this._spanId.toString('hex')), | ||
| Utils.removeLeadingZeros(parentId), | ||
| this._flags.toString(16) | ||
| ].join(':'); | ||
| } | ||
|
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| /** | ||
| * @param {string} serializedString - a serialized span context. | ||
| * @return {SpanContext} - returns a span context represented by the serializedString. | ||
| **/ | ||
| static fromString(serializedString: string): any { | ||
| let headers: any = serializedString.split(':'); | ||
| if (headers.length !== 4) { | ||
| return null; | ||
| } | ||
|
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| // todo(oibe) is it better to throw an exception here, or return null? | ||
| let traceId: any = Utils.encodeInt64(headers[0]); | ||
| let spanId: any = Utils.encodeInt64(headers[1]); | ||
| let parentId: any = headers[2]; | ||
| let flags: number = parseInt(headers[3], 16); | ||
|
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| let convertedParentId: any = null; | ||
| if (!(parentId === '0')) { | ||
| convertedParentId = Utils.encodeInt64(parentId); | ||
| } | ||
|
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| return new SpanContext( | ||
| traceId, | ||
| spanId, | ||
| convertedParentId, | ||
| flags | ||
| ); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| // @flow | ||
| // Copyright (c) 2016 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
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| export const CLIENT_SEND = 'cs'; | ||
| export const CLIENT_RECV = 'cr'; | ||
| export const SERVER_SEND = 'ss'; | ||
| export const SERVER_RECV = 'sr'; | ||
| export const LOCAL_COMPONENT = 'lc'; | ||
| export const CLIENT_ADDR = 'ca'; | ||
| export const SERVER_ADDR = 'sa'; | ||
| export const annotationType = { | ||
| BOOL: 'BOOL', | ||
| BYTES: 'BYTES', | ||
| I16: 'I16', | ||
| I32: 'I32', | ||
| I64: 'I64', | ||
| DOUBLE: 'DOUBLE', | ||
| STRING: 'STRING' | ||
| }; | ||
|
|
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