feat: OpenTracing propagator

propagators/opentelemetry-propagator-opentracing/.eslintignore

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+build

propagators/opentelemetry-propagator-opentracing/.eslintrc.js

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+module.exports = {
+    "env": {
+        "mocha": true,
+        "commonjs": true,
+        "node": true,
+        "browser": true
+    },
+    ...require('../../eslint.config.js')
+}

propagators/opentelemetry-propagator-opentracing/.npmignore

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+/bin
+/coverage
+/doc
+/test

propagators/opentelemetry-propagator-opentracing/LICENSE

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propagators/opentelemetry-propagator-opentracing/README.md

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+# OpenTelemetry Propagator OpenTracing
+
+[![Gitter chat][gitter-image]][gitter-url]
+[![NPM Published Version][npm-img]][npm-url]
+[![dependencies][dependencies-image]][dependencies-url]
+[![devDependencies][devdependencies-image]][devdependencies-url]
+[![Apache License][license-image]][license-image]
+
+## OpenTracing Format
+
+| Header Name         | Description                                                                                                                            | Required              |
+| ------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | --------------------- |
+| `ot-tracer-traceid` | uint64 encoded as a string of 16 hex characters                                                                                        | yes                   |
+| `ot-tracer-spanid`  | uint64 encoded as a string of 16 hex characters                                                                                        | yes                   |
+| `ot-tracer-sampled` | boolean encoded as a string with the values `'true'` or `'false'`                                                                      | no                    |
+| `ot-baggage-*`      | repeated string to string key-value baggage items; keys are prefixed with `ot-baggage-` and the corresponding value is the raw string. | if baggage is present |
+
+### Interop and trace ids
+
+The OpenTracing propagation format expects trace ids to be 64-bits. In order to
+interop with OpenTelemetry, trace ids need to be truncated to 64-bits before
+sending them on the wire. When truncating, the least significant (right-most)
+bits MUST be retained. For example, a trace id of
+`3c3039f4d78d5c02ee8e3e41b17ce105` would be truncated to `ee8e3e41b17ce105`.
+
+## Example Usage
+
+```javascript
+const api = require('@opentelemetry/api');
+const {
+  OpenTracingPropagator,
+} = require('@opentelemetry/propagator-opentracing');
+
+api.propagation.setGlobalPropagator(new OpenTracingPropagator());
+```
+
+## Useful links
+
+- For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
+- For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
+- For help or feedback on this project, join us on [gitter][gitter-url]
+
+## License
+
+Apache 2.0 - See [LICENSE][license-url] for more information.
+
+[gitter-image]: https://badges.gitter.im/open-telemetry/opentelemetry-js.svg
+[gitter-url]: https://gitter.im/open-telemetry/opentelemetry-node?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
+[license-url]: https://github.com/open-telemetry/opentelemetry-js-contrib/blob/master/LICENSE
+[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
+[dependencies-image]: https://david-dm.org/open-telemetry/opentelemetry-js/status.svg?path=packages/opentelemetry-propagator-opentracing
+[dependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js?path=packages%2Fopentelemetry-propagator-opentracing
+[devdependencies-image]: https://david-dm.org/open-telemetry/opentelemetry-js/dev-status.svg?path=packages/opentelemetry-propagator-opentracing
+[devdependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js?path=packages%2Fopentelemetry-propagator-opentracing&type=dev
+[npm-url]: https://www.npmjs.com/package/@opentelemetry/propagator-opentracing
+[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Fpropagator-opentracing.svg

propagators/opentelemetry-propagator-opentracing/package.json

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+{
+  "name": "@opentelemetry/propagator-opentracing",
+  "version": "0.13.0",
+  "description": "OpenTelemetry propagator OpenTracing provides context propagation for systems that are using the OpenTracing header format",
+  "main": "build/src/index.js",
+  "types": "build/src/index.d.ts",
+  "repository": "open-telemetry/opentelemetry-js-contrib",
+  "scripts": {
+    "compile": "tsc --build",
+    "clean": "tsc --build --clean",
+    "test": "nyc ts-mocha -p tsconfig.json test/**/*.test.ts",
+    "codecov": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../",
+    "lint": "eslint . --ext .ts",
+    "lint:fix": "eslint . --ext .ts --fix",
+    "version": "node ../../scripts/version-update.js",
+    "watch": "tsc --build --watch"
+  },
+  "keywords": [
+    "opentelemetry",
+    "nodejs",
+    "tracing",
+    "profiling",
+    "monitoring",
+    "b3"
+  ],
+  "author": "OpenTelemetry Authors",
+  "license": "Apache-2.0",
+  "engines": {
+    "node": ">=8.0.0"
+  },
+  "files": [
+    "build/src/**/*.js",
+    "build/src/**/*.js.map",
+    "build/src/**/*.d.ts",
+    "LICENSE",
+    "README.md"
+  ],
+  "publishConfig": {
+    "access": "public"
+  },
+  "dependencies": {
+    "@opentelemetry/api": "^0.15.0"
+  },
+  "devDependencies": {
+    "@types/mocha": "8.2.0",
+    "@types/node": "14.14.12",
+    "codecov": "3.8.1",
+    "gts": "2.0.2",
+    "istanbul-instrumenter-loader": "3.0.1",
+    "mocha": "7.2.0",
+    "nyc": "15.1.0",
+    "rimraf": "3.0.2",
+    "ts-loader": "8.0.12",
+    "ts-mocha": "8.0.0",
+    "typescript": "3.9.7"
+  }
+}