Bug 1734197 - Support setting the product's channel

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 [Full changelog](https://github.com/mozilla/glean.js/compare/v0.21.1...main)
 
+* [#796](https://github.com/mozilla/glean.js/pull/796): Support setting the `app_channel` metric.
+  - As described in ["Release channels"](https://mozilla.github.io/glean/book/reference/general/initializing.html?highlight=channel#release-channels).
+
 # v0.21.1 (2021-09-30)
 
 [Full changelog](https://github.com/mozilla/glean.js/compare/v0.21.0...v0.21.1)

glean/src/core/config.ts

@@ -15,9 +15,11 @@ const LOG_TAG = "core.Config";
  * Describes how to configure Glean.
  */
 export interface ConfigurationInterface {
+  // Application release channel (e.g. "beta" or "nightly").
+  readonly channel?: string,
   // The build identifier generated by the CI system (e.g. "1234/A").
   readonly appBuild?: string,
-  // The user visible version string fro the application running Glean.js.
+  // The user visible version string for the application running Glean.js.
   readonly appDisplayVersion?: string,
   // The server pings are sent to.
   readonly serverEndpoint?: string,
@@ -31,6 +33,8 @@ export interface ConfigurationInterface {
 
 // Important: the `Configuration` should only be used internally by the Glean singleton.
 export class Configuration implements ConfigurationInterface {
+  // Application release channel (e.g. "beta" or "nightly").
+  readonly channel?: string;
   // The build identifier generated by the CI system (e.g. "1234/A").
   readonly appBuild?: string;
   // The user visible version string fro the application running Glean.js.
@@ -43,6 +47,7 @@ export class Configuration implements ConfigurationInterface {
   httpClient?: Uploader;
 
   constructor(config?: ConfigurationInterface) {
+    this.channel = config?.channel;
     this.appBuild = config?.appBuild;
     this.appDisplayVersion = config?.appDisplayVersion;
 

glean/src/core/internal_metrics.ts

@@ -31,9 +31,11 @@ export class CoreMetrics {
   readonly architecture: StringMetricType;
   readonly locale: StringMetricType;
   // Provided by the user
+  readonly appChannel: StringMetricType;
   readonly appBuild: StringMetricType;
   readonly appDisplayVersion: StringMetricType;
 
+
   constructor() {
     this.clientId = new UUIDMetricType({
       name: "client_id",
@@ -83,6 +85,14 @@ export class CoreMetrics {
       disabled: false,
     });
 
+    this.appChannel = new StringMetricType({
+      name: "app_channel",
+      category: "",
+      sendInPings: ["glean_client_info"],
+      lifetime: Lifetime.Application,
+      disabled: false,
+    });
+
     this.appBuild = new StringMetricType({
       name: "app_build",
       category: "",
@@ -109,6 +119,9 @@ export class CoreMetrics {
     await StringMetricType._private_setUndispatched(this.locale, await platform.info.locale());
     await StringMetricType._private_setUndispatched(this.appBuild, config.appBuild || "Unknown");
     await StringMetricType._private_setUndispatched(this.appDisplayVersion, config.appDisplayVersion || "Unknown");
+    if (config.channel) {
+      await StringMetricType._private_setUndispatched(this.appChannel, config.channel);
+    }
   }
 
   /**

glean/tests/unit/core/pings/maker.spec.ts

@@ -81,6 +81,7 @@ describe("PingMaker", function() {
 
     // Initialize will also initialize core metrics that are part of the client info.
     await Glean.testResetGlean(testAppId, true, {
+      channel: "channel",
       appBuild:"build",
       appDisplayVersion: "display version",
       serverEndpoint: "http://localhost:8080"
@@ -94,8 +95,9 @@ describe("PingMaker", function() {
     assert.ok("os_version" in clientInfo2);
     assert.ok("architecture" in clientInfo2);
     assert.ok("locale" in clientInfo2);
-    assert.ok("app_build" in clientInfo2);
-    assert.ok("app_display_version" in clientInfo2);
+    assert.strictEqual(clientInfo2["app_channel"], "channel");
+    assert.strictEqual(clientInfo2["app_build"], "build");
+    assert.strictEqual(clientInfo2["app_display_version"], "display version");
   });
 
   it("collectPing must return `undefined` if ping that must not be sent if empty, is empty", async function() {