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Add API to decorate link with user/session info (close #819)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // Copyright (c) 2013-2023 Snowplow Analytics Ltd. All rights reserved. | ||
| // | ||
| // This program is licensed to you under the Apache License Version 2.0, | ||
| // and you may not use this file except in compliance with the Apache License | ||
| // Version 2.0. You may obtain a copy of the Apache License Version 2.0 at | ||
| // http://www.apache.org/licenses/LICENSE-2.0. | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the Apache License Version 2.0 is distributed on | ||
| // an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | ||
| // express or implied. See the Apache License Version 2.0 for the specific | ||
| // language governing permissions and limitations there under. | ||
|
|
||
| import Foundation | ||
|
|
||
| extension String { | ||
| func toBase64(urlSafe: Bool = true) -> String { | ||
| var encoded = Data(self.utf8).base64EncodedString() | ||
| if urlSafe { | ||
| // We need URL safe with no padding. Since there is no built-in way to do this, we transform | ||
| // the encoded payload to make it URL safe by replacing chars that are different in the URL-safe | ||
| // alphabet. Namely, 62 is - instead of +, and 63 _ instead of /. | ||
| // See: https://tools.ietf.org/html/rfc4648#section-5 | ||
| encoded = encoded | ||
| .replacingOccurrences(of: "/", with: "_") | ||
| .replacingOccurrences(of: "+", with: "-") | ||
|
|
||
| // There is also no padding since the length is implicitly known. | ||
| encoded = encoded.trimmingCharacters(in: CharacterSet(charactersIn: "=")) | ||
| } | ||
| return encoded | ||
| } | ||
| } |
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42 changes: 42 additions & 0 deletions
42
Sources/Snowplow/Tracker/CrossDeviceParameterConfiguration.swift
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| @@ -0,0 +1,42 @@ | ||
| // Copyright (c) 2013-2023 Snowplow Analytics Ltd. All rights reserved. | ||
| // | ||
| // This program is licensed to you under the Apache License Version 2.0, | ||
| // and you may not use this file except in compliance with the Apache License | ||
| // Version 2.0. You may obtain a copy of the Apache License Version 2.0 at | ||
| // http://www.apache.org/licenses/LICENSE-2.0. | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the Apache License Version 2.0 is distributed on | ||
| // an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | ||
| // express or implied. See the Apache License Version 2.0 for the specific | ||
| // language governing permissions and limitations there under. | ||
|
|
||
| import Foundation | ||
|
|
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| /// Configuration object for ``TrackerController/decorateLink`` | ||
| @objc public class CrossDeviceParameterConfiguration : NSObject { | ||
| /// Whether to include the value of ``SessionController.sessionId`` when decorating a link (enabled by default) | ||
| @objc var sessionId: Bool | ||
| /// Whether to include the value of ``Subject.userId`` when decorating a link | ||
| @objc var subjectUserId: Bool | ||
| /// Whether to include the value of ``Tracker.appId`` when decorating a link (enabled by default) | ||
| @objc var sourceId: Bool | ||
| /// Whether to include the value of ``Tracker.platform`` when decorating a link | ||
| @objc var sourcePlatform: Bool | ||
| /// Optional identifier/information for cross-navigation | ||
| @objc var reason: String? | ||
|
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| @objc init( | ||
| sessionId: Bool = true, | ||
| subjectUserId: Bool = false, | ||
| sourceId: Bool = true, | ||
| sourcePlatform: Bool = false, | ||
| reason: String? = nil | ||
| ) { | ||
| self.sessionId = sessionId | ||
| self.subjectUserId = subjectUserId | ||
| self.sourceId = sourceId | ||
| self.sourcePlatform = sourcePlatform | ||
| self.reason = reason | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| // Copyright (c) 2013-2023 Snowplow Analytics Ltd. All rights reserved. | ||
| // | ||
| // This program is licensed to you under the Apache License Version 2.0, | ||
| // and you may not use this file except in compliance with the Apache License | ||
| // Version 2.0. You may obtain a copy of the Apache License Version 2.0 at | ||
| // http://www.apache.org/licenses/LICENSE-2.0. | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the Apache License Version 2.0 is distributed on | ||
| // an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | ||
| // express or implied. See the Apache License Version 2.0 for the specific | ||
| // language governing permissions and limitations there under. | ||
|
|
||
| import XCTest | ||
| @testable import SnowplowTracker | ||
|
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| class TestLinkDecorator: XCTestCase { | ||
| let epoch = "\\d{13}" | ||
|
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| let replacements = [".", "/", "?"] | ||
| func matches(for regex: String, in text: String) { | ||
| var regex = "^\(regex)$" | ||
|
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| do { | ||
| for replacement in replacements { | ||
| regex = regex.replacingOccurrences(of: replacement, with: "\\" + replacement) | ||
| } | ||
| let pattern = try NSRegularExpression(pattern: regex) | ||
| let nsString = text as NSString | ||
| let results = pattern.matches(in: text, range: NSRange(location: 0, length: nsString.length)) | ||
| let fullMatch = results.map { nsString.substring(with: $0.range)} | ||
| if (fullMatch.count == 0) { | ||
| XCTFail("URL does not match pattern:\n\(text)\n\(regex)") | ||
| } | ||
| XCTAssertEqual(fullMatch.count, 1) | ||
| } catch let error { | ||
| print("invalid regex: \(error.localizedDescription)") | ||
| } | ||
| } | ||
|
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| func testParameterConfiguration() { | ||
| let tracker = getTracker() | ||
| let _ = tracker.track(ScreenView(name: "test")) | ||
|
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| let link = URL(string: "https://example.com")! | ||
| let userId = tracker.session!.userId! | ||
| let sessionId = tracker.session!.sessionId! | ||
| let subjectUserId = tracker.subject!.userId!.toBase64() | ||
| let appId = tracker.appId.toBase64() | ||
| let platform = devicePlatformToString(tracker.devicePlatform) | ||
| let reason = "reason" | ||
| let reasonb64 = reason.toBase64() | ||
|
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||
| // All false | ||
| matches( | ||
| for: "https://example.com?_sp=\(userId).\(epoch)", | ||
| in: tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: false, sourceId: false))!.absoluteString | ||
| ) | ||
|
|
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| // Default | ||
| matches( | ||
| for: "https://example.com?_sp=\(userId).\(epoch).\(sessionId)..\(appId)", | ||
| in: tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration())!.absoluteString | ||
| ) | ||
|
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||
| matches( | ||
| for: "https://example.com?_sp=\(userId).\(epoch).\(sessionId).\(subjectUserId).\(appId)", | ||
| in: tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(subjectUserId: true))!.absoluteString | ||
| ) | ||
|
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| matches( | ||
| for: "https://example.com?_sp=\(userId).\(epoch).\(sessionId).\(subjectUserId).\(appId).\(platform)", | ||
| in: tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(subjectUserId: true, sourcePlatform: true))!.absoluteString | ||
| ) | ||
|
|
||
| matches( | ||
| for: "https://example.com?_sp=\(userId).\(epoch).\(sessionId).\(subjectUserId).\(appId).\(platform).\(reasonb64)", | ||
| in: tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(subjectUserId: true, sourcePlatform: true, reason: reason))!.absoluteString | ||
| ) | ||
|
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| matches( | ||
| for: "https://example.com?_sp=\(userId).\(epoch).....\(reasonb64)", | ||
| in: tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: false, sourceId: false, reason: reason))!.absoluteString | ||
| ) | ||
| } | ||
|
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| func testWithExistingSpQueryParameter() { | ||
| let tracker = getTracker() | ||
| let link = URL(string: "https://example.com?_sp=test")! | ||
|
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| let result = tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: false, sourceId: false))! | ||
|
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| matches(for: "https://example.com?_sp=\(tracker.session!.userId!).\(epoch)", in: result.absoluteString) | ||
| } | ||
|
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| func testWithOtherQueryParameters() { | ||
| let tracker = getTracker() | ||
| let link = URL(string: "https://example.com?a=a&b=b")! | ||
| let userId = tracker.session!.userId! | ||
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| let result = tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: false, sourceId: false))! | ||
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| matches(for: "https://example.com?a=a&b=b&_sp=\(userId).\(epoch)", in: result.absoluteString) | ||
| } | ||
|
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| func testExistingSpQueryParameterInMiddleOfOtherQueryParameters() { | ||
| let tracker = getTracker() | ||
| let link = URL(string: "https://example.com?a=a&_sp=test&b=b")! | ||
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| let result = tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: false, sourceId: false))! | ||
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| matches(for: "https://example.com?a=a&b=b&_sp=\(tracker.session!.userId!).\(epoch)", in: result.absoluteString) | ||
| } | ||
|
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| func testMissingFields() { | ||
| let tracker = getTrackerNoSubjectUserId() | ||
| let link = URL(string: "https://example.com")! | ||
|
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| let result = tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: true, subjectUserId: true))! | ||
|
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| // Resulting _sp param will have nothing for: | ||
| // - sessionId, as an event has not been tracked | ||
| // - subjectUserId, as it has not been set | ||
| matches( | ||
| for: "https://example.com?_sp=\(tracker.session!.userId!).\(epoch)...\(tracker.appId.toBase64())", | ||
| in: result.absoluteString | ||
| ) | ||
| } | ||
|
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| func testMissingSessionUserId() { | ||
| let tracker = getTrackerNoSessionUserId() | ||
| let link = URL(string: "https://example.com")! | ||
|
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| let result = tracker.decorateLink(link, extendedParameters: CrossDeviceParameterConfiguration(sessionId: true, subjectUserId: true)) | ||
|
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| XCTAssertNil(result) | ||
| } | ||
|
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| var (emitterConfig, networkConfig, trackerConfig) = ( | ||
| EmitterConfiguration().eventStore(MockEventStore()).bufferOption(.single), | ||
| NetworkConfiguration(networkConnection: MockNetworkConnection(requestOption: .post, statusCode: 200)), | ||
| TrackerConfiguration().installAutotracking(false).screenViewAutotracking(false).lifecycleAutotracking(false).sessionContext(true) | ||
| ) | ||
|
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| func getTracker() -> TrackerController { | ||
| let subjectConfig = SubjectConfiguration().userId("userId") | ||
|
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| let namespace = "testEmitter" + String(describing: Int.random(in: 0..<100)) | ||
| return Snowplow.createTracker(namespace: namespace, | ||
| network: networkConfig, | ||
| configurations: [trackerConfig, emitterConfig, subjectConfig]) | ||
| } | ||
|
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| private func getTrackerNoSubjectUserId() -> TrackerController { | ||
| let namespace = "testEmitter" + String(describing: Int.random(in: 0..<100)) | ||
| return Snowplow.createTracker(namespace: namespace, | ||
| network: networkConfig, | ||
| configurations: [trackerConfig, emitterConfig]) | ||
| } | ||
|
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| private func getTrackerNoSessionUserId() -> TrackerController { | ||
| trackerConfig.sessionContext = false | ||
|
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| let namespace = "testEmitter" + String(describing: Int.random(in: 0..<100)) | ||
| return Snowplow.createTracker(namespace: namespace, | ||
| network: networkConfig, | ||
| configurations: [trackerConfig, emitterConfig]) | ||
| } | ||
| } |