Fix make script (#43)

* fixes make_tag script to include swift-source

* Adds GleanPlumbHelpers.swift

make_tag.sh

@@ -52,7 +52,7 @@ else
 fi
 
 "$THIS_DIR/generate.sh" $AS_PATH || exit 1
-git add "$THIS_DIR/generated"
+git add "$THIS_DIR/swift-source"
 
 if [ "false" = $IS_LOCAL ]; then
     echo "Removing application services repository after generating bindings"

swift-source/Generated/Metrics/Metrics.swift

@@ -22,7 +22,7 @@ extension GleanMetrics {
             // Intentionally left private, no external user can instantiate a new global object.
         }
 
-        public static let info = BuildInfo(buildDate: DateComponents(calendar: Calendar.current, timeZone: TimeZone(abbreviation: "UTC"), year: 2022, month: 2, day: 12, hour: 15, minute: 6, second: 39))
+        public static let info = BuildInfo(buildDate: DateComponents(calendar: Calendar.current, timeZone: TimeZone(abbreviation: "UTC"), year: 2022, month: 2, day: 16, hour: 17, minute: 5, second: 28))
     }
 
     enum NimbusEvents {

swift-source/Nimbus/GleanPlumbHelpers.swift

@@ -0,0 +1,72 @@
+/* This Source Code Form is subject to the terms of the Mozilla
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+
+/**
+ * Instances of this class are useful for implementing a messaging service based upon
+ * Nimbus.
+ *
+ * The message helper is designed to help string interpolation and JEXL evalutaiuon against the context
+ * of the attrtibutes Nimbus already knows about.
+ *
+ * App-specific, additional context can be given at creation time.
+ *
+ * The helpers are designed to evaluate multiple messages at a time, however: since the context may change
+ * over time, the message helper should not be stored for long periods.
+ */
+public protocol GleanPlumbProtocol {
+    func createMessageHelper() throws -> GleanPlumbMessageHelper
+    func createMessageHelper(additionalContext: [String: Any]) throws -> GleanPlumbMessageHelper
+    func createMessageHelper<T: Encodable>(additionalContext: T) throws -> GleanPlumbMessageHelper
+}
+
+/**
+ * A helper object to make working with Strings uniform across multiple implementations of the messaging
+ * system.
+ *
+ * This object provides access to a JEXL evaluator which runs against the same context as provided by
+ * Nimbus targeting.
+ *
+ * It should also provide a similar function for String substitution, though this scheduled for EXP-2159.
+ */
+public class GleanPlumbMessageHelper {
+    private let targetingHelper: NimbusTargetingHelperProtocol
+    private let stringHelper: NimbusStringHelperProtocol
+
+    init(targetingHelper: NimbusTargetingHelperProtocol, stringHelper: NimbusStringHelperProtocol) {
+        self.targetingHelper = targetingHelper
+        self.stringHelper = stringHelper
+    }
+
+    public func evalJexl(expression: String) throws -> Bool {
+        try targetingHelper.evalJexl(expression: expression)
+    }
+
+    public func getUuid(template: String) -> String? {
+        stringHelper.getUuid(template: template)
+    }
+
+    public func stringFormat(template: String, uuid: String?) -> String {
+        stringHelper.stringFormat(template: template, uuid: uuid)
+    }
+}
+
+// MARK: Dummy implementations
+
+internal class AlwaysFalseTargetingHelper: NimbusTargetingHelperProtocol {
+    public func evalJexl(expression _: String) throws -> Bool {
+        false
+    }
+}
+
+internal class NonStringHelper: NimbusStringHelperProtocol {
+    public func getUuid(template _: String) -> String? {
+        nil
+    }
+
+    public func stringFormat(template: String, uuid _: String?) -> String {
+        template
+    }
+}