Add PrivacySandboxPlugin (close #1205)

common/changes/@snowplow/browser-plugin-privacy-sandbox/feature-add-privacy-sandbox-plugin_2023-06-14-20-26.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@snowplow/browser-plugin-privacy-sandbox",
+      "comment": "Introduce PrivacySandboxPlugin",
+      "type": "none"
+    }
+  ],
+  "packageName": "@snowplow/browser-plugin-privacy-sandbox"
+}

common/config/rush/repo-state.json

@@ -1,5 +1,5 @@
 // DO NOT MODIFY THIS FILE MANUALLY BUT DO COMMIT IT. It is generated and used by Rush.
 {
-  "pnpmShrinkwrapHash": "5484bd61ddb42855b5228699721d75c1d5b9cb25",
+  "pnpmShrinkwrapHash": "eefa4bd00b3696bf3bbfd5ad5c63a0a6b34f5fc4",
   "preferredVersionsHash": "bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f"
 }

plugins/browser-plugin-privacy-sandbox/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2023 Snowplow Analytics Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

plugins/browser-plugin-privacy-sandbox/README.md

@@ -0,0 +1,56 @@
+# Snowplow Privacy Sandbox Tracking
+
+[![npm version][npm-image]][npm-url]
+[![License][license-image]](LICENSE)
+
+Browser Plugin to be used with `@snowplow/browser-tracker`.
+
+Allows for adding Privacy Sandbox related data to your Snowplow tracking. To learn more about the Privacy Sandbox you can visit the official [website](https://www.privacysandbox.com/). As more and more APIs become available or further refined, we would be upgrading the plugin with more capabilities and options.
+
+## Maintainer quick start
+
+Part of the Snowplow JavaScript Tracker monorepo.  
+Build with [Node.js](https://nodejs.org/en/) (14 or 16) and [Rush](https://rushjs.io/).
+
+### Setup repository
+
+```bash
+npm install -g @microsoft/rush 
+git clone https://github.com/snowplow/snowplow-javascript-tracker.git
+rush update
+```
+
+## Package Installation
+
+With npm:
+
+```bash
+npm install @snowplow/browser-plugin-privacy-sandbox
+```
+
+## Usage
+
+Initialize your tracker with the PrivacySandboxPlugin:
+
+```js
+import { newTracker } from '@snowplow/browser-tracker';
+import { PrivacySandboxPlugin } from '@snowplow/browser-plugin-privacy-sandbox';
+
+newTracker('sp1', '{{collector}}', { plugins: [ PrivacySandboxPlugin() ] }); 
+```
+
+With the plugin added to your tracker, a new context will be attached to every event, when Privacy Sandbox [Topics](https://developer.chrome.com/docs/privacy-sandbox/topics/overview/) are detected for a user.
+
+## Copyright and license
+
+Licensed and distributed under the [BSD 3-Clause License](LICENSE) ([An OSI Approved License][osi]).
+
+Copyright (c) 2023 Snowplow Analytics Ltd.
+
+All rights reserved.
+
+[npm-url]: https://www.npmjs.com/package/@snowplow/browser-plugin-privacy-sandbox
+[npm-image]: https://img.shields.io/npm/v/@snowplow/browser-plugin-privacy-sandbox
+[docs]: https://docs.snowplowanalytics.com/docs/collecting-data/collecting-from-own-applications/javascript-tracker/
+[osi]: https://opensource.org/licenses/BSD-3-Clause
+[license-image]: https://img.shields.io/npm/l/@snowplow/browser-plugin-privacy-sandbox

plugins/browser-plugin-privacy-sandbox/jest.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  preset: 'ts-jest',
+  reporters: ['jest-standard-reporter'],
+  testEnvironment: 'jest-environment-jsdom-global',
+};

plugins/browser-plugin-privacy-sandbox/package.json

@@ -0,0 +1,53 @@
+{
+  "name": "@snowplow/browser-plugin-privacy-sandbox",
+  "version": "3.12.0",
+  "description": "Allows for the collection of Privacy Sandbox specific data.",
+  "homepage": "https://docs.snowplow.io/",
+  "bugs": "https://github.com/snowplow/snowplow-javascript-tracker/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/snowplow/snowplow-javascript-tracker.git"
+  },
+  "license": "BSD-3-Clause",
+  "author": "Peter Perlepes",
+  "sideEffects": false,
+  "main": "./dist/index.umd.js",
+  "module": "./dist/index.module.js",
+  "types": "./dist/index.module.d.ts",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "rollup -c --silent --failAfterWarnings",
+    "test": "jest"
+  },
+  "dependencies": {
+    "@snowplow/browser-tracker-core": "workspace:*",
+    "@snowplow/tracker-core": "workspace:*",
+    "tslib": "^2.3.1"
+  },
+  "devDependencies": {
+    "@ampproject/rollup-plugin-closure-compiler": "~0.27.0",
+    "@rollup/plugin-commonjs": "~21.0.2",
+    "@rollup/plugin-node-resolve": "~13.1.3",
+    "@types/jest": "~27.4.1",
+    "@types/jsdom": "~16.2.14",
+    "@typescript-eslint/eslint-plugin": "~5.15.0",
+    "@typescript-eslint/parser": "~5.15.0",
+    "eslint": "~8.11.0",
+    "jest": "~27.5.1",
+    "jest-environment-jsdom": "~27.5.1",
+    "jest-environment-jsdom-global": "~3.0.0",
+    "jest-standard-reporter": "~2.0.0",
+    "rollup": "~2.70.1",
+    "rollup-plugin-cleanup": "~3.2.1",
+    "rollup-plugin-license": "~2.6.1",
+    "rollup-plugin-terser": "~7.0.2",
+    "rollup-plugin-ts": "~2.0.5",
+    "ts-jest": "~27.1.3",
+    "typescript": "~4.6.2"
+  },
+  "peerDependencies": {
+    "@snowplow/browser-tracker": "~3.12.0"
+  }
+}

plugins/browser-plugin-privacy-sandbox/rollup.config.js

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+import { nodeResolve } from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
+import ts from 'rollup-plugin-ts'; // Preferred over @rollup/plugin-typescript as it bundles .d.ts files
+import { banner } from '../../banner';
+import compiler from '@ampproject/rollup-plugin-closure-compiler';
+import { terser } from 'rollup-plugin-terser';
+import cleanup from 'rollup-plugin-cleanup';
+import pkg from './package.json';
+import { builtinModules } from 'module';
+
+const umdPlugins = [nodeResolve({ browser: true }), commonjs(), ts()];
+const umdName = 'snowplowPrivacySandbox';
+
+export default [
+  // CommonJS (for Node) and ES module (for bundlers) build.
+  {
+    input: './src/index.ts',
+    plugins: [...umdPlugins, banner()],
+    treeshake: { moduleSideEffects: ['sha1'] },
+    output: [{ file: pkg.main, format: 'umd', sourcemap: true, name: umdName }],
+  },
+  {
+    input: './src/index.ts',
+    plugins: [...umdPlugins, compiler(), terser(), cleanup({ comments: 'none' }), banner()],
+    treeshake: { moduleSideEffects: ['sha1'] },
+    output: [{ file: pkg.main.replace('.js', '.min.js'), format: 'umd', sourcemap: true, name: umdName }],
+  },
+  {
+    input: './src/index.ts',
+    external: [...builtinModules, ...Object.keys(pkg.dependencies), ...Object.keys(pkg.devDependencies)],
+    plugins: [
+      ts(), // so Rollup can convert TypeScript to JavaScript
+      banner(),
+    ],
+    output: [{ file: pkg.module, format: 'es', sourcemap: true }],
+  },
+];

plugins/browser-plugin-privacy-sandbox/src/index.ts

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+import { BrowserPlugin } from '@snowplow/browser-tracker-core';
+import { PRIVACY_SANDBOX_TOPICS_SCHEMA } from './schemata';
+import { LOG } from '@snowplow/tracker-core';
+
+type PrivacySandboxTopic = {
+  configVersion: string;
+  modelVersion: string;
+  taxonomyVersion: string;
+  topic: number;
+  version: string;
+};
+
+type Topic = Pick<PrivacySandboxTopic, 'topic' | 'version' | 'taxonomyVersion'>;
+
+declare global {
+  interface Document {
+    /* Declare Feature Policy types https://developer.mozilla.org/en-US/docs/Web/API/FeaturePolicy */
+    featurePolicy?: {
+      allowsFeature: (feature: string, origin?: string) => boolean;
+    };
+    browsingTopics: () => Promise<PrivacySandboxTopic[]>;
+  }
+}
+
+let topics: Topic[] = [];
+
+/**
+ * Adds Privacy Sandbox Topics context to events
+ */
+export function PrivacySandboxPlugin(): BrowserPlugin {
+  return {
+    activateBrowserPlugin: function () {
+      const isTopicsApiAvailable =
+        'browsingTopics' in document && document.featurePolicy?.allowsFeature('browsing-topics');
+
+      if (isTopicsApiAvailable) {
+        document
+          .browsingTopics()
+          .then((availableTopics) => {
+            topics = availableTopics.map(({ topic, version, taxonomyVersion }) => ({
+              topic,
+              version,
+              taxonomyVersion,
+            }));
+          })
+          .catch((err) => LOG.error(err));
+
+        this.contexts = () => (topics.length ? [{ schema: PRIVACY_SANDBOX_TOPICS_SCHEMA, data: { topics } }] : []);
+      }
+    },
+  };
+}

plugins/browser-plugin-privacy-sandbox/src/schemata.ts

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+export const PRIVACY_SANDBOX_TOPICS_SCHEMA = 'iglu:com.google.privacysandbox/topics/jsonschema/1-0-0';

plugins/browser-plugin-privacy-sandbox/test/__snapshots__/privacy-sandbox.test.ts.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Privacy Sandbox plugin Returns no values when feature policy "browsing-topics" is off 1`] = `undefined`;
+
+exports[`Privacy Sandbox plugin Returns values for Privacy Sandbox properties 1`] = `
+Object {
+  "data": Array [
+    Object {
+      "data": Object {
+        "topics": Array [
+          Object {
+            "taxonomyVersion": "1",
+            "topic": 1,
+            "version": "chrome.1:1:1",
+          },
+        ],
+      },
+      "schema": "iglu:com.google.privacysandbox/topics/jsonschema/1-0-0",
+    },
+  ],
+  "schema": "iglu:com.snowplowanalytics.snowplow/contexts/jsonschema/1-0-0",
+}
+`;